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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Reflection.Metadata;
using System.Reflection.Metadata.Ecma335;
using Microsoft.CodeAnalysis.CSharp.Symbols;
using Microsoft.CodeAnalysis.CSharp.Test.Utilities;
using Microsoft.CodeAnalysis.CSharp.UnitTests;
using Microsoft.CodeAnalysis.Emit;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
using Basic.Reference.Assemblies;
namespace Microsoft.CodeAnalysis.CSharp.EditAndContinue.UnitTests
{
public class EditAndContinueStateMachineTests : EditAndContinueTestBase
{
[Fact]
[WorkItem(1068894, "DevDiv"), WorkItem(1137300, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1137300")]
public void AddIteratorMethod()
{
var source0 = WithWindowsLineBreaks(@"
using System.Collections.Generic;
class C
{
}
");
var source1 = WithWindowsLineBreaks(@"
using System.Collections.Generic;
class C
{
static IEnumerable<int> G()
{
yield return 1;
}
}
");
var parseOptions = TestOptions.Regular.WithNoRefSafetyRulesAttribute();
var compilation0 = CreateCompilation(Parse(source0, "a.cs", parseOptions), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(Parse(source1, "a.cs", parseOptions));
var g1 = compilation1.GetMember<MethodSymbol>("C.G");
var bytes0 = compilation0.EmitToArray();
using var md0 = ModuleMetadata.CreateFromImage(bytes0);
var generation0 = CreateInitialBaseline(compilation0, md0, EmptyLocalsProvider);
var reader0 = md0.MetadataReader;
// gen 1
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Insert, null, g1)));
using var md1 = diff1.GetMetadata();
var reader1 = md1.Reader;
var readers = new[] { reader0, reader1 };
CheckNames(readers, diff1.EmitResult.UpdatedMethods);
CheckNames(readers, diff1.EmitResult.ChangedTypes, "C", "<G>d__0#1");
CheckEncLogDefinitions(reader1,
Row(1, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(2, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(1, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(2, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(3, TableIndex.Field, EditAndContinueOperation.Default),
Row(2, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(2, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(7, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(8, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(10, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.AddProperty),
Row(1, TableIndex.Property, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.AddProperty),
Row(2, TableIndex.Property, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.AddParameter),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(4, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(10, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(11, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(12, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodSemantics, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodSemantics, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(7, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(1, TableIndex.NestedClass, EditAndContinueOperation.Default),
Row(1, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(3, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(4, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(5, TableIndex.InterfaceImpl, EditAndContinueOperation.Default));
CheckEncMapDefinitions(reader1,
Handle(3, TableIndex.TypeDef),
Handle(1, TableIndex.Field),
Handle(2, TableIndex.Field),
Handle(3, TableIndex.Field),
Handle(2, TableIndex.MethodDef),
Handle(3, TableIndex.MethodDef),
Handle(4, TableIndex.MethodDef),
Handle(5, TableIndex.MethodDef),
Handle(6, TableIndex.MethodDef),
Handle(7, TableIndex.MethodDef),
Handle(8, TableIndex.MethodDef),
Handle(9, TableIndex.MethodDef),
Handle(10, TableIndex.MethodDef),
Handle(1, TableIndex.Param),
Handle(1, TableIndex.InterfaceImpl),
Handle(2, TableIndex.InterfaceImpl),
Handle(3, TableIndex.InterfaceImpl),
Handle(4, TableIndex.InterfaceImpl),
Handle(5, TableIndex.InterfaceImpl),
Handle(4, TableIndex.CustomAttribute),
Handle(5, TableIndex.CustomAttribute),
Handle(6, TableIndex.CustomAttribute),
Handle(7, TableIndex.CustomAttribute),
Handle(8, TableIndex.CustomAttribute),
Handle(9, TableIndex.CustomAttribute),
Handle(10, TableIndex.CustomAttribute),
Handle(11, TableIndex.CustomAttribute),
Handle(12, TableIndex.CustomAttribute),
Handle(1, TableIndex.StandAloneSig),
Handle(2, TableIndex.StandAloneSig),
Handle(1, TableIndex.PropertyMap),
Handle(1, TableIndex.Property),
Handle(2, TableIndex.Property),
Handle(1, TableIndex.MethodSemantics),
Handle(2, TableIndex.MethodSemantics),
Handle(1, TableIndex.MethodImpl),
Handle(2, TableIndex.MethodImpl),
Handle(3, TableIndex.MethodImpl),
Handle(4, TableIndex.MethodImpl),
Handle(5, TableIndex.MethodImpl),
Handle(6, TableIndex.MethodImpl),
Handle(7, TableIndex.MethodImpl),
Handle(1, TableIndex.NestedClass));
diff1.VerifyPdb(Enumerable.Range(0x06000001, 0x20), @"
<symbols>
<files>
<file id=""1"" name=""a.cs"" language=""C#"" checksumAlgorithm=""SHA1"" checksum=""66-9A-93-25-E7-42-DC-A9-DD-D1-61-3F-D9-45-A8-E1-39-8C-37-79"" />
</files>
<methods>
<method token=""0x6000002"">
<customDebugInfo>
<forwardIterator name=""<G>d__0#1"" />
</customDebugInfo>
</method>
<method token=""0x6000005"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x1f"" startLine=""6"" startColumn=""5"" endLine=""6"" endColumn=""6"" document=""1"" />
<entry offset=""0x20"" startLine=""7"" startColumn=""9"" endLine=""7"" endColumn=""24"" document=""1"" />
<entry offset=""0x30"" hidden=""true"" document=""1"" />
<entry offset=""0x37"" startLine=""8"" startColumn=""5"" endLine=""8"" endColumn=""6"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x39"">
<namespace name=""System.Collections.Generic"" />
</scope>
</method>
</methods>
</symbols>");
}
[Theory]
[MemberData(nameof(ExternalPdbFormats))]
public void AddAsyncMethod(DebugInformationFormat format)
{
var source0 = @"
using System.Threading.Tasks;
class C
{
}";
var source1 = @"
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
await Task.FromResult(10);
return 20;
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(source1);
var v0 = CompileAndVerify(compilation0, emitOptions: EmitOptions.Default.WithDebugInformationFormat(format));
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var reader0 = md0.MetadataReader;
var generation0 = CreateInitialBaseline(compilation0, md0, EmptyLocalsProvider);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Insert, null, f1)));
using var md1 = diff1.GetMetadata();
var reader1 = md1.Reader;
var readers = new[] { reader0, reader1 };
CheckNames(readers, reader1.GetTypeDefNames(), "<F>d__0#1");
CheckNames(readers, reader1.GetMethodDefNames(), "F", ".ctor", "MoveNext", "SetStateMachine");
CheckNames(readers, reader1.GetFieldDefNames(), "<>1__state", "<>t__builder", "<>u__1");
// Add state machine type and its members:
// - Method '.ctor'
// - Method 'MoveNext'
// - Method 'SetStateMachine'
// - Field '<>1__state'
// - Field '<>t__builder'
// - Field '<>u__1'
// Add method F()
CheckEncLogDefinitions(reader1,
Row(1, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(2, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(1, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(2, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(3, TableIndex.Field, EditAndContinueOperation.Default),
Row(2, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(2, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.AddParameter),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(4, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(1, TableIndex.NestedClass, EditAndContinueOperation.Default),
Row(1, TableIndex.InterfaceImpl, EditAndContinueOperation.Default));
diff1.VerifyPdb(new[] { MetadataTokens.MethodDefinitionHandle(4) }, @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method token=""0x6000004"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x7"" hidden=""true"" document=""1"" />
<entry offset=""0xe"" startLine=""7"" startColumn=""5"" endLine=""7"" endColumn=""6"" document=""1"" />
<entry offset=""0xf"" startLine=""8"" startColumn=""9"" endLine=""8"" endColumn=""35"" document=""1"" />
<entry offset=""0x1c"" hidden=""true"" document=""1"" />
<entry offset=""0x6d"" startLine=""9"" startColumn=""9"" endLine=""9"" endColumn=""19"" document=""1"" />
<entry offset=""0x72"" hidden=""true"" document=""1"" />
<entry offset=""0x8c"" startLine=""10"" startColumn=""5"" endLine=""10"" endColumn=""6"" document=""1"" />
<entry offset=""0x94"" hidden=""true"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0xa2"">
<namespace name=""System.Threading.Tasks"" />
</scope>
<asyncInfo>
<kickoffMethod token=""0x6000002"" />
<await yield=""0x2e"" resume=""0x49"" token=""0x6000004"" />
</asyncInfo>
</method>
</methods>
</symbols>");
}
[Fact]
public void MethodToIteratorMethod()
{
var source0 = @"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
return new int[] { 1, 2, 3 };
}
}";
var source1 = @"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
yield return 2;
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(source1);
var v0 = CompileAndVerify(compilation0);
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, EmptyLocalsProvider);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1)));
diff1.VerifySynthesizedMembers(
"C: {<F>d__0#1}",
"C.<F>d__0#1: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
using var md1 = diff1.GetMetadata();
CheckEncLogDefinitions(md1.Reader,
Row(2, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(2, TableIndex.Field, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(3, TableIndex.Field, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(4, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(7, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(8, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(10, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.AddProperty),
Row(1, TableIndex.Property, EditAndContinueOperation.Default),
Row(1, TableIndex.PropertyMap, EditAndContinueOperation.AddProperty),
Row(2, TableIndex.Property, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.AddParameter),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(10, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(11, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(12, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(13, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodSemantics, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodSemantics, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(7, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.NestedClass, EditAndContinueOperation.Default),
Row(1, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(3, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(4, TableIndex.InterfaceImpl, EditAndContinueOperation.Default),
Row(5, TableIndex.InterfaceImpl, EditAndContinueOperation.Default));
}
[Fact]
public void MethodToAsyncMethod()
{
var source0 = @"
using System.Threading.Tasks;
class C
{
static Task<int> F()
{
return Task.FromResult(1);
}
}";
var source1 = @"
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
return await Task.FromResult(1);
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(source1);
var v0 = CompileAndVerify(compilation0);
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1)));
diff1.VerifySynthesizedMembers(
"C.<F>d__0#1: {<>1__state, <>t__builder, <>s__1, <>u__1, MoveNext, SetStateMachine}",
"C: {<F>d__0#1}");
using var md1 = diff1.GetMetadata();
CheckEncLogDefinitions(md1.Reader,
Row(2, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(1, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(2, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(3, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(4, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddMethod),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.AddParameter),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(4, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodImpl, EditAndContinueOperation.Default),
Row(1, TableIndex.NestedClass, EditAndContinueOperation.Default),
Row(1, TableIndex.InterfaceImpl, EditAndContinueOperation.Default));
}
[Fact]
public void IteratorMethodToMethod()
{
var source0 = @"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
yield return 2;
}
}";
var source1 = @"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
return new int[] { 1, 2, 3 };
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(source1);
var v0 = CompileAndVerify(compilation0);
using (var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData))
{
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, EmptyLocalsProvider);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1)));
using (var md1 = diff1.GetMetadata())
{
CheckAttributes(md1.Reader,
new CustomAttributeRow(Handle(0, TableIndex.MethodDef), Handle(0, TableIndex.MemberRef))); // row id 0 == delete
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default)); // Delete IteratorStateMachineAttribute
}
}
}
[Fact]
public void AsyncMethodToMethod()
{
var source0 = @"
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
return await Task.FromResult(1);
}
}";
var source1 = @"
using System.Threading.Tasks;
class C
{
static Task<int> F()
{
return Task.FromResult(1);
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll);
var compilation1 = compilation0.WithSource(source1);
var v0 = CompileAndVerify(compilation0);
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, EmptyLocalsProvider);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1)));
using (var md1 = diff1.GetMetadata())
{
CheckAttributes(md1.Reader,
new CustomAttributeRow(Handle(0, TableIndex.MethodDef), Handle(0, TableIndex.MemberRef)), // row id 0 == delete
new CustomAttributeRow(Handle(0, TableIndex.MethodDef), Handle(0, TableIndex.MemberRef))); // row id 0 == delete
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default), // Delete AsyncStateMachineAttribute
Row(2, TableIndex.CustomAttribute, EditAndContinueOperation.Default)); // Delete DebuggerStepThroughAttribute
}
}
[Fact]
public void AsyncMethodOverloads()
{
using var _ = new EditAndContinueTest()
.AddBaseline(
"""
using System.Threading.Tasks;
class C
{
static async Task<int> F(short a)
{
return <N:0>await Task.FromResult(1)</N:0>;
}
static async Task<int> F(long a)
{
return <N:1>await Task.FromResult(1)</N:1>;
}
static async Task<int> F(int a)
{
return <N:2>await Task.FromResult(1)</N:2>;
}
}
""")
.AddGeneration(
"""
using System.Threading.Tasks;
class C
{
static async Task<int> F(short a)
{
return <N:0>await Task.FromResult(2)</N:0>;
}
static async Task<int> F(long a)
{
return <N:1>await Task.FromResult(3)</N:1>;
}
static async Task<int> F(int a)
{
return <N:2>await Task.FromResult(4)</N:2>;
}
}
""",
edits:
[
Edit(SemanticEditKind.Update, c => c.GetMembers<IMethodSymbol>("C.F").Single(m => m.ToTestDisplayString() == "System.Threading.Tasks.Task<System.Int32> C.F(System.Int16 a)"), preserveLocalVariables: true),
Edit(SemanticEditKind.Update, c => c.GetMembers<IMethodSymbol>("C.F").Single(m => m.ToTestDisplayString() == "System.Threading.Tasks.Task<System.Int32> C.F(System.Int32 a)"), preserveLocalVariables: true),
Edit(SemanticEditKind.Update, c => c.GetMembers<IMethodSymbol>("C.F").Single(m => m.ToTestDisplayString() == "System.Threading.Tasks.Task<System.Int32> C.F(System.Int64 a)"), preserveLocalVariables: true),
],
validator: g =>
{
// notice no TypeDefs, FieldDefs
g.VerifyEncLogDefinitions(
[
Row(7, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(8, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(9, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(10, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(11, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(12, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(12, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(2, TableIndex.Param, EditAndContinueOperation.Default),
Row(3, TableIndex.Param, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(2, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default)
]);
})
.Verify();
}
[Fact]
public void UpdateIterator_NoVariables()
{
using var _ = new EditAndContinueTest()
.AddBaseline("""
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
<N:0>yield return 1;</N:0>
}
}
""",
validator: g =>
{
g.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", """
{
// Code size 57 (0x39)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld "int C.<F>d__0.<>1__state"
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_0030
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld "int C.<F>d__0.<>1__state"
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.1
IL_0022: stfld "int C.<F>d__0.<>2__current"
IL_0027: ldarg.0
IL_0028: ldc.i4.1
IL_0029: stfld "int C.<F>d__0.<>1__state"
IL_002e: ldc.i4.1
IL_002f: ret
IL_0030: ldarg.0
IL_0031: ldc.i4.m1
IL_0032: stfld "int C.<F>d__0.<>1__state"
IL_0037: ldc.i4.0
IL_0038: ret
}
""");
})
.AddGeneration("""
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
<N:0>yield return 2;</N:0>
}
}
""",
edits: new[] { Edit(SemanticEditKind.Update, c => c.GetMember("C.F"), preserveLocalVariables: true) },
validator: g =>
{
// only methods with sequence points should be listed in UpdatedMethods:
g.VerifyUpdatedMethodNames("MoveNext");
g.VerifyChangedTypeNames("C", "<F>d__0");
// Verify that no new TypeDefs, FieldDefs or MethodDefs were added,
// 3 methods were updated:
// - the kick-off method (might be changed if the method previously wasn't an iterator)
// - Finally method
// - MoveNext method
g.VerifyEncLogDefinitions(
[
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default)
]);
g.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", """
{
// Code size 57 (0x39)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld "int C.<F>d__0.<>1__state"
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_0030
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld "int C.<F>d__0.<>1__state"
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.2
IL_0022: stfld "int C.<F>d__0.<>2__current"
IL_0027: ldarg.0
IL_0028: ldc.i4.1
IL_0029: stfld "int C.<F>d__0.<>1__state"
IL_002e: ldc.i4.1
IL_002f: ret
IL_0030: ldarg.0
IL_0031: ldc.i4.m1
IL_0032: stfld "int C.<F>d__0.<>1__state"
IL_0037: ldc.i4.0
IL_0038: ret
}
""");
})
.Verify();
}
[Fact]
public void UpdateAsync_NoVariables()
{
using var _ = new EditAndContinueTest()
.AddBaseline("""
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
<N:0>await Task.FromResult(1)</N:0>;
return 2;
}
}
""",
g =>
{
g.VerifyMethodBody("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", """
{
// Code size 160 (0xa0)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter<int> V_2,
C.<F>d__0 V_3,
System.Exception V_4)
// sequence point: <hidden>
IL_0000: ldarg.0
IL_0001: ldfld "int C.<F>d__0.<>1__state"
IL_0006: stloc.0
.try
{
// sequence point: <hidden>
IL_0007: ldloc.0
IL_0008: brfalse.s IL_000c
IL_000a: br.s IL_000e
IL_000c: br.s IL_0048
// sequence point: {
IL_000e: nop
// sequence point: await Task.FromResult(1) ;
IL_000f: ldc.i4.1
IL_0010: call "System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)"
IL_0015: callvirt "System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()"
IL_001a: stloc.2
// sequence point: <hidden>
IL_001b: ldloca.s V_2
IL_001d: call "bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get"
IL_0022: brtrue.s IL_0064
IL_0024: ldarg.0
IL_0025: ldc.i4.0
IL_0026: dup
IL_0027: stloc.0
IL_0028: stfld "int C.<F>d__0.<>1__state"
// async: yield
IL_002d: ldarg.0
IL_002e: ldloc.2
IL_002f: stfld "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_0034: ldarg.0
IL_0035: stloc.3
IL_0036: ldarg.0
IL_0037: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_003c: ldloca.s V_2
IL_003e: ldloca.s V_3
IL_0040: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)"
IL_0045: nop
IL_0046: leave.s IL_009f
// async: resume
IL_0048: ldarg.0
IL_0049: ldfld "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_004e: stloc.2
IL_004f: ldarg.0
IL_0050: ldflda "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_0055: initobj "System.Runtime.CompilerServices.TaskAwaiter<int>"
IL_005b: ldarg.0
IL_005c: ldc.i4.m1
IL_005d: dup
IL_005e: stloc.0
IL_005f: stfld "int C.<F>d__0.<>1__state"
IL_0064: ldloca.s V_2
IL_0066: call "int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()"
IL_006b: pop
// sequence point: return 2;
IL_006c: ldc.i4.2
IL_006d: stloc.1
IL_006e: leave.s IL_008a
}
catch System.Exception
{
// sequence point: <hidden>
IL_0070: stloc.s V_4
IL_0072: ldarg.0
IL_0073: ldc.i4.s -2
IL_0075: stfld "int C.<F>d__0.<>1__state"
IL_007a: ldarg.0
IL_007b: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_0080: ldloc.s V_4
IL_0082: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)"
IL_0087: nop
IL_0088: leave.s IL_009f
}
// sequence point: }
IL_008a: ldarg.0
IL_008b: ldc.i4.s -2
IL_008d: stfld "int C.<F>d__0.<>1__state"
// sequence point: <hidden>
IL_0092: ldarg.0
IL_0093: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_0098: ldloc.1
IL_0099: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)"
IL_009e: nop
IL_009f: ret
}
""");
g.VerifyPdb("C+<F>d__0.MoveNext", """
<symbols>
<methods>
<method containingType="C+<F>d__0" name="MoveNext">
<customDebugInfo>
<using>
<namespace usingCount="1" />
</using>
<encLocalSlotMap>
<slot kind="27" offset="0" />
<slot kind="20" offset="0" />
<slot kind="33" offset="16" />
<slot kind="temp" />
<slot kind="temp" />
</encLocalSlotMap>
</customDebugInfo>
<scope startOffset="0x0" endOffset="0xa0">
<namespace name="System.Threading.Tasks" />
</scope>
<asyncInfo>
<kickoffMethod declaringType="C" methodName="F" />
<await yield="0x2d" resume="0x48" declaringType="C+<F>d__0" methodName="MoveNext" />
</asyncInfo>
</method>
</methods>
</symbols>
""", PdbValidationOptions.ExcludeSequencePoints | PdbValidationOptions.ExcludeDocuments);
})
.AddGeneration(
"""
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
<N:0>await Task.FromResult(10)</N:0>;
return 20;
}
}
""",
edits: new[] { Edit(SemanticEditKind.Update, c => c.GetMember("C.F"), preserveLocalVariables: true) },
validator: g =>
{
// only methods with sequence points should be listed in UpdatedMethods:
g.VerifyUpdatedMethodNames("MoveNext");
g.VerifyChangedTypeNames("C", "<F>d__0");
// Verify that no new TypeDefs, FieldDefs or MethodDefs were added,
// 2 methods were updated:
// - the kick-off method (might be changed if the method previously wasn't async)
// - MoveNext method
g.VerifyEncLogDefinitions(
[
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(4, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(2, TableIndex.CustomAttribute, EditAndContinueOperation.Default)
]);
g.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", """
{
// Code size 162 (0xa2)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter<int> V_2,
C.<F>d__0 V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld "int C.<F>d__0.<>1__state"
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_000c
IL_000a: br.s IL_000e
IL_000c: br.s IL_0049
IL_000e: nop
IL_000f: ldc.i4.s 10
IL_0011: call "System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)"
IL_0016: callvirt "System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()"
IL_001b: stloc.2
IL_001c: ldloca.s V_2
IL_001e: call "bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get"
IL_0023: brtrue.s IL_0065
IL_0025: ldarg.0
IL_0026: ldc.i4.0
IL_0027: dup
IL_0028: stloc.0
IL_0029: stfld "int C.<F>d__0.<>1__state"
IL_002e: ldarg.0
IL_002f: ldloc.2
IL_0030: stfld "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_0035: ldarg.0
IL_0036: stloc.3
IL_0037: ldarg.0
IL_0038: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_003d: ldloca.s V_2
IL_003f: ldloca.s V_3
IL_0041: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)"
IL_0046: nop
IL_0047: leave.s IL_00a1
IL_0049: ldarg.0
IL_004a: ldfld "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_004f: stloc.2
IL_0050: ldarg.0
IL_0051: ldflda "System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1"
IL_0056: initobj "System.Runtime.CompilerServices.TaskAwaiter<int>"
IL_005c: ldarg.0
IL_005d: ldc.i4.m1
IL_005e: dup
IL_005f: stloc.0
IL_0060: stfld "int C.<F>d__0.<>1__state"
IL_0065: ldloca.s V_2
IL_0067: call "int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()"
IL_006c: pop
IL_006d: ldc.i4.s 20
IL_006f: stloc.1
IL_0070: leave.s IL_008c
}
catch System.Exception
{
IL_0072: stloc.s V_4
IL_0074: ldarg.0
IL_0075: ldc.i4.s -2
IL_0077: stfld "int C.<F>d__0.<>1__state"
IL_007c: ldarg.0
IL_007d: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_0082: ldloc.s V_4
IL_0084: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)"
IL_0089: nop
IL_008a: leave.s IL_00a1
}
IL_008c: ldarg.0
IL_008d: ldc.i4.s -2
IL_008f: stfld "int C.<F>d__0.<>1__state"
IL_0094: ldarg.0
IL_0095: ldflda "System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder"
IL_009a: ldloc.1
IL_009b: call "void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)"
IL_00a0: nop
IL_00a1: ret
}
""");
})
.Verify();
}
[Fact]
public void UpdateAsync_Await_Add()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:0>await M1()</N:0>;
<N:1>await M2()</N:1>;
End();
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:0>await M1()</N:0>;
<N:2>await M3()</N:2>;
<N:1>await M2()</N:1>;
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__4"" />
<encStateMachineStateMap>
<state number=""0"" offset=""16"" />
<state number=""1"" offset=""48"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
");
v0.VerifyPdb("C+<F>d__4.MoveNext", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<F>d__4"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLocalSlotMap>
<slot kind=""27"" offset=""0"" />
<slot kind=""33"" offset=""16"" />
<slot kind=""temp"" />
<slot kind=""33"" offset=""48"" />
<slot kind=""temp"" />
</encLocalSlotMap>
</customDebugInfo>
<asyncInfo>
<kickoffMethod declaringType=""C"" methodName=""F"" />
<await yield=""0x37"" resume=""0x55"" declaringType=""C+<F>d__4"" methodName=""MoveNext"" />
<await yield=""0x96"" resume=""0xb1"" declaringType=""C+<F>d__4"" methodName=""MoveNext"" />
</asyncInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeSequencePoints);
v0.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 268 (0x10c)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0055
IL_0014: br IL_00b1
IL_0019: nop
IL_001a: call ""System.Threading.Tasks.Task C.M1()""
IL_001f: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0024: stloc.1
IL_0025: ldloca.s V_1
IL_0027: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_002c: brtrue.s IL_0071
IL_002e: ldarg.0
IL_002f: ldc.i4.0
IL_0030: dup
IL_0031: stloc.0
IL_0032: stfld ""int C.<F>d__4.<>1__state""
IL_0037: ldarg.0
IL_0038: ldloc.1
IL_0039: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_003e: ldarg.0
IL_003f: stloc.2
IL_0040: ldarg.0
IL_0041: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0046: ldloca.s V_1
IL_0048: ldloca.s V_2
IL_004a: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_004f: nop
IL_0050: leave IL_010b
IL_0055: ldarg.0
IL_0056: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_005b: stloc.1
IL_005c: ldarg.0
IL_005d: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0062: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0068: ldarg.0
IL_0069: ldc.i4.m1
IL_006a: dup
IL_006b: stloc.0
IL_006c: stfld ""int C.<F>d__4.<>1__state""
IL_0071: ldloca.s V_1
IL_0073: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0078: nop
IL_0079: call ""System.Threading.Tasks.Task C.M2()""
IL_007e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0083: stloc.3
IL_0084: ldloca.s V_3
IL_0086: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_008b: brtrue.s IL_00cd
IL_008d: ldarg.0
IL_008e: ldc.i4.1
IL_008f: dup
IL_0090: stloc.0
IL_0091: stfld ""int C.<F>d__4.<>1__state""
IL_0096: ldarg.0
IL_0097: ldloc.3
IL_0098: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_009d: ldarg.0
IL_009e: stloc.2
IL_009f: ldarg.0
IL_00a0: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00a5: ldloca.s V_3
IL_00a7: ldloca.s V_2
IL_00a9: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_00ae: nop
IL_00af: leave.s IL_010b
IL_00b1: ldarg.0
IL_00b2: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00b7: stloc.3
IL_00b8: ldarg.0
IL_00b9: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00be: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00c4: ldarg.0
IL_00c5: ldc.i4.m1
IL_00c6: dup
IL_00c7: stloc.0
IL_00c8: stfld ""int C.<F>d__4.<>1__state""
IL_00cd: ldloca.s V_3
IL_00cf: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00d4: nop
IL_00d5: call ""void C.End()""
IL_00da: nop
IL_00db: leave.s IL_00f7
}
catch System.Exception
{
IL_00dd: stloc.s V_4
IL_00df: ldarg.0
IL_00e0: ldc.i4.s -2
IL_00e2: stfld ""int C.<F>d__4.<>1__state""
IL_00e7: ldarg.0
IL_00e8: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00ed: ldloc.s V_4
IL_00ef: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_00f4: nop
IL_00f5: leave.s IL_010b
}
IL_00f7: ldarg.0
IL_00f8: ldc.i4.s -2
IL_00fa: stfld ""int C.<F>d__4.<>1__state""
IL_00ff: ldarg.0
IL_0100: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0105: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_010a: nop
IL_010b: ret
}
");
diff1.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 380 (0x17c)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Runtime.CompilerServices.TaskAwaiter V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: switch (
IL_001b,
IL_001d,
IL_0022)
IL_0019: br.s IL_0027
IL_001b: br.s IL_0063
IL_001d: br IL_0120
IL_0022: br IL_00c2
IL_0027: nop
IL_0028: call ""System.Threading.Tasks.Task C.M1()""
IL_002d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0032: stloc.1
IL_0033: ldloca.s V_1
IL_0035: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_003a: brtrue.s IL_007f
IL_003c: ldarg.0
IL_003d: ldc.i4.0
IL_003e: dup
IL_003f: stloc.0
IL_0040: stfld ""int C.<F>d__4.<>1__state""
IL_0045: ldarg.0
IL_0046: ldloc.1
IL_0047: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_004c: ldarg.0
IL_004d: stloc.2
IL_004e: ldarg.0
IL_004f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0054: ldloca.s V_1
IL_0056: ldloca.s V_2
IL_0058: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_005d: nop
IL_005e: leave IL_017b
IL_0063: ldarg.0
IL_0064: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0069: stloc.1
IL_006a: ldarg.0
IL_006b: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0070: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0076: ldarg.0
IL_0077: ldc.i4.m1
IL_0078: dup
IL_0079: stloc.0
IL_007a: stfld ""int C.<F>d__4.<>1__state""
IL_007f: ldloca.s V_1
IL_0081: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0086: nop
IL_0087: call ""System.Threading.Tasks.Task C.M3()""
IL_008c: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0091: stloc.3
IL_0092: ldloca.s V_3
IL_0094: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0099: brtrue.s IL_00de
IL_009b: ldarg.0
IL_009c: ldc.i4.2
IL_009d: dup
IL_009e: stloc.0
IL_009f: stfld ""int C.<F>d__4.<>1__state""
IL_00a4: ldarg.0
IL_00a5: ldloc.3
IL_00a6: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00ab: ldarg.0
IL_00ac: stloc.2
IL_00ad: ldarg.0
IL_00ae: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00b3: ldloca.s V_3
IL_00b5: ldloca.s V_2
IL_00b7: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_00bc: nop
IL_00bd: leave IL_017b
IL_00c2: ldarg.0
IL_00c3: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00c8: stloc.3
IL_00c9: ldarg.0
IL_00ca: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00cf: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00d5: ldarg.0
IL_00d6: ldc.i4.m1
IL_00d7: dup
IL_00d8: stloc.0
IL_00d9: stfld ""int C.<F>d__4.<>1__state""
IL_00de: ldloca.s V_3
IL_00e0: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00e5: nop
IL_00e6: call ""System.Threading.Tasks.Task C.M2()""
IL_00eb: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_00f0: stloc.s V_4
IL_00f2: ldloca.s V_4
IL_00f4: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_00f9: brtrue.s IL_013d
IL_00fb: ldarg.0
IL_00fc: ldc.i4.1
IL_00fd: dup
IL_00fe: stloc.0
IL_00ff: stfld ""int C.<F>d__4.<>1__state""
IL_0104: ldarg.0
IL_0105: ldloc.s V_4
IL_0107: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_010c: ldarg.0
IL_010d: stloc.2
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0114: ldloca.s V_4
IL_0116: ldloca.s V_2
IL_0118: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_011d: nop
IL_011e: leave.s IL_017b
IL_0120: ldarg.0
IL_0121: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0126: stloc.s V_4
IL_0128: ldarg.0
IL_0129: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_012e: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0134: ldarg.0
IL_0135: ldc.i4.m1
IL_0136: dup
IL_0137: stloc.0
IL_0138: stfld ""int C.<F>d__4.<>1__state""
IL_013d: ldloca.s V_4
IL_013f: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0144: nop
IL_0145: call ""void C.End()""
IL_014a: nop
IL_014b: leave.s IL_0167
}
catch System.Exception
{
IL_014d: stloc.s V_5
IL_014f: ldarg.0
IL_0150: ldc.i4.s -2
IL_0152: stfld ""int C.<F>d__4.<>1__state""
IL_0157: ldarg.0
IL_0158: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_015d: ldloc.s V_5
IL_015f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0164: nop
IL_0165: leave.s IL_017b
}
IL_0167: ldarg.0
IL_0168: ldc.i4.s -2
IL_016a: stfld ""int C.<F>d__4.<>1__state""
IL_016f: ldarg.0
IL_0170: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0175: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_017a: nop
IL_017b: ret
}
");
}
[Fact]
public void UpdateAsync_Await_AddRemove_Lambda()
{
var source0 = MarkedSource(@"
using System;
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static int F(Func<Task> t) => 1;
int x = F(<N:4>async () =>
{
<N:0>await M1()</N:0>;
<N:1>await M2()</N:1>;
End();
}</N:4>);
int y = F(<N:5>async () =>
{
<N:2>await M1()</N:2>;
<N:3>await M2()</N:3>;
End();
}</N:5>);
}");
var source1 = MarkedSource(@"
using System;
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static int F(Func<Task> t) => 1;
int x = F(<N:4>async () =>
{
<N:0>await M1()</N:0>;
await M3();
<N:1>await M2()</N:1>;
End();
}</N:4>);
int y = F(<N:5>async () =>
{
<N:3>await M2()</N:3>;
End();
}</N:5>);
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var ctor0 = compilation0.GetMember<NamedTypeSymbol>("C").InstanceConstructors.Single();
var ctor1 = compilation1.GetMember<NamedTypeSymbol>("C").InstanceConstructors.Single();
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, ctor0, ctor1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C..ctor", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name="".ctor"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLambdaMap>
<methodOrdinal>7</methodOrdinal>
<lambda offset=""-216"" />
<lambda offset=""-95"" />
</encLambdaMap>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""13"" startColumn=""5"" endLine=""18"" endColumn=""14"" document=""1"" />
<entry offset=""0x2a"" startLine=""20"" startColumn=""5"" endLine=""25"" endColumn=""14"" document=""1"" />
</sequencePoints>
</method>
</methods>
</symbols>
");
v0.VerifyPdb("C+<>c.<.ctor>b__7_0", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<>c"" name=""<.ctor>b__7_0"">
<customDebugInfo>
<forwardIterator name=""<<-ctor>b__7_0>d"" />
<encStateMachineStateMap>
<state number=""0"" offset=""-200"" />
<state number=""1"" offset=""-168"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
v0.VerifyPdb("C+<>c.<.ctor>b__7_1", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<>c"" name=""<.ctor>b__7_1"">
<customDebugInfo>
<forwardIterator name=""<<-ctor>b__7_1>d"" />
<encStateMachineStateMap>
<state number=""0"" offset=""-79"" />
<state number=""1"" offset=""-47"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
v0.VerifyPdb("C+<>c+<<-ctor>b__7_0>d.MoveNext", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<>c+<<-ctor>b__7_0>d"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLocalSlotMap>
<slot kind=""27"" offset=""-216"" />
<slot kind=""33"" offset=""-200"" />
<slot kind=""temp"" />
<slot kind=""33"" offset=""-168"" />
<slot kind=""temp"" />
</encLocalSlotMap>
</customDebugInfo>
<asyncInfo>
<kickoffMethod declaringType=""C+<>c"" methodName=""<.ctor>b__7_0"" />
<await yield=""0x37"" resume=""0x55"" declaringType=""C+<>c+<<-ctor>b__7_0>d"" methodName=""MoveNext"" />
<await yield=""0x96"" resume=""0xb1"" declaringType=""C+<>c+<<-ctor>b__7_0>d"" methodName=""MoveNext"" />
</asyncInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeSequencePoints);
v0.VerifyPdb("C+<>c+<<-ctor>b__7_1>d.MoveNext", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<>c+<<-ctor>b__7_1>d"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLocalSlotMap>
<slot kind=""27"" offset=""-95"" />
<slot kind=""33"" offset=""-79"" />
<slot kind=""temp"" />
<slot kind=""33"" offset=""-47"" />
<slot kind=""temp"" />
</encLocalSlotMap>
</customDebugInfo>
<asyncInfo>
<kickoffMethod declaringType=""C+<>c"" methodName=""<.ctor>b__7_1"" />
<await yield=""0x37"" resume=""0x55"" declaringType=""C+<>c+<<-ctor>b__7_1>d"" methodName=""MoveNext"" />
<await yield=""0x96"" resume=""0xb1"" declaringType=""C+<>c+<<-ctor>b__7_1>d"" methodName=""MoveNext"" />
</asyncInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeSequencePoints);
diff1.VerifyIL("C.<>c.<<-ctor>b__7_0>d.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 380 (0x17c)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<>c.<<-ctor>b__7_0>d V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Runtime.CompilerServices.TaskAwaiter V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: switch (
IL_001b,
IL_001d,
IL_0022)
IL_0019: br.s IL_0027
IL_001b: br.s IL_0063
IL_001d: br IL_0120
IL_0022: br IL_00c2
IL_0027: nop
IL_0028: call ""System.Threading.Tasks.Task C.M1()""
IL_002d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0032: stloc.1
IL_0033: ldloca.s V_1
IL_0035: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_003a: brtrue.s IL_007f
IL_003c: ldarg.0
IL_003d: ldc.i4.0
IL_003e: dup
IL_003f: stloc.0
IL_0040: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_0045: ldarg.0
IL_0046: ldloc.1
IL_0047: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_004c: ldarg.0
IL_004d: stloc.2
IL_004e: ldarg.0
IL_004f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_0>d.<>t__builder""
IL_0054: ldloca.s V_1
IL_0056: ldloca.s V_2
IL_0058: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<>c.<<-ctor>b__7_0>d>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<>c.<<-ctor>b__7_0>d)""
IL_005d: nop
IL_005e: leave IL_017b
IL_0063: ldarg.0
IL_0064: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_0069: stloc.1
IL_006a: ldarg.0
IL_006b: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_0070: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0076: ldarg.0
IL_0077: ldc.i4.m1
IL_0078: dup
IL_0079: stloc.0
IL_007a: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_007f: ldloca.s V_1
IL_0081: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0086: nop
IL_0087: call ""System.Threading.Tasks.Task C.M3()""
IL_008c: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0091: stloc.3
IL_0092: ldloca.s V_3
IL_0094: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0099: brtrue.s IL_00de
IL_009b: ldarg.0
IL_009c: ldc.i4.2
IL_009d: dup
IL_009e: stloc.0
IL_009f: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_00a4: ldarg.0
IL_00a5: ldloc.3
IL_00a6: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_00ab: ldarg.0
IL_00ac: stloc.2
IL_00ad: ldarg.0
IL_00ae: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_0>d.<>t__builder""
IL_00b3: ldloca.s V_3
IL_00b5: ldloca.s V_2
IL_00b7: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<>c.<<-ctor>b__7_0>d>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<>c.<<-ctor>b__7_0>d)""
IL_00bc: nop
IL_00bd: leave IL_017b
IL_00c2: ldarg.0
IL_00c3: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_00c8: stloc.3
IL_00c9: ldarg.0
IL_00ca: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_00cf: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00d5: ldarg.0
IL_00d6: ldc.i4.m1
IL_00d7: dup
IL_00d8: stloc.0
IL_00d9: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_00de: ldloca.s V_3
IL_00e0: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00e5: nop
IL_00e6: call ""System.Threading.Tasks.Task C.M2()""
IL_00eb: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_00f0: stloc.s V_4
IL_00f2: ldloca.s V_4
IL_00f4: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_00f9: brtrue.s IL_013d
IL_00fb: ldarg.0
IL_00fc: ldc.i4.1
IL_00fd: dup
IL_00fe: stloc.0
IL_00ff: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_0104: ldarg.0
IL_0105: ldloc.s V_4
IL_0107: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_010c: ldarg.0
IL_010d: stloc.2
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_0>d.<>t__builder""
IL_0114: ldloca.s V_4
IL_0116: ldloca.s V_2
IL_0118: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<>c.<<-ctor>b__7_0>d>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<>c.<<-ctor>b__7_0>d)""
IL_011d: nop
IL_011e: leave.s IL_017b
IL_0120: ldarg.0
IL_0121: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_0126: stloc.s V_4
IL_0128: ldarg.0
IL_0129: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_0>d.<>u__1""
IL_012e: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0134: ldarg.0
IL_0135: ldc.i4.m1
IL_0136: dup
IL_0137: stloc.0
IL_0138: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_013d: ldloca.s V_4
IL_013f: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0144: nop
IL_0145: call ""void C.End()""
IL_014a: nop
IL_014b: leave.s IL_0167
}
catch System.Exception
{
IL_014d: stloc.s V_5
IL_014f: ldarg.0
IL_0150: ldc.i4.s -2
IL_0152: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_0157: ldarg.0
IL_0158: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_0>d.<>t__builder""
IL_015d: ldloc.s V_5
IL_015f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0164: nop
IL_0165: leave.s IL_017b
}
IL_0167: ldarg.0
IL_0168: ldc.i4.s -2
IL_016a: stfld ""int C.<>c.<<-ctor>b__7_0>d.<>1__state""
IL_016f: ldarg.0
IL_0170: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_0>d.<>t__builder""
IL_0175: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_017a: nop
IL_017b: ret
}");
diff1.VerifyIL("C.<>c.<<-ctor>b__7_1>d.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 176 (0xb0)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<>c.<<-ctor>b__7_1>d V_2,
System.Exception V_3)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<>c.<<-ctor>b__7_1>d.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.1
IL_0009: beq.s IL_000d
IL_000b: br.s IL_000f
IL_000d: br.s IL_0057
IL_000f: ldloc.0
IL_0010: ldc.i4.0
IL_0011: blt.s IL_001e
IL_0013: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_0018: newobj ""System.InvalidOperationException..ctor(string)""
IL_001d: throw
IL_001e: nop
IL_001f: call ""System.Threading.Tasks.Task C.M2()""
IL_0024: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0029: stloc.1
IL_002a: ldloca.s V_1
IL_002c: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0031: brtrue.s IL_0073
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: dup
IL_0036: stloc.0
IL_0037: stfld ""int C.<>c.<<-ctor>b__7_1>d.<>1__state""
IL_003c: ldarg.0
IL_003d: ldloc.1
IL_003e: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_1>d.<>u__1""
IL_0043: ldarg.0
IL_0044: stloc.2
IL_0045: ldarg.0
IL_0046: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_1>d.<>t__builder""
IL_004b: ldloca.s V_1
IL_004d: ldloca.s V_2
IL_004f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<>c.<<-ctor>b__7_1>d>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<>c.<<-ctor>b__7_1>d)""
IL_0054: nop
IL_0055: leave.s IL_00af
IL_0057: ldarg.0
IL_0058: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_1>d.<>u__1""
IL_005d: stloc.1
IL_005e: ldarg.0
IL_005f: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<>c.<<-ctor>b__7_1>d.<>u__1""
IL_0064: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_006a: ldarg.0
IL_006b: ldc.i4.m1
IL_006c: dup
IL_006d: stloc.0
IL_006e: stfld ""int C.<>c.<<-ctor>b__7_1>d.<>1__state""
IL_0073: ldloca.s V_1
IL_0075: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_007a: nop
IL_007b: call ""void C.End()""
IL_0080: nop
IL_0081: leave.s IL_009b
}
catch System.Exception
{
IL_0083: stloc.3
IL_0084: ldarg.0
IL_0085: ldc.i4.s -2
IL_0087: stfld ""int C.<>c.<<-ctor>b__7_1>d.<>1__state""
IL_008c: ldarg.0
IL_008d: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_1>d.<>t__builder""
IL_0092: ldloc.3
IL_0093: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0098: nop
IL_0099: leave.s IL_00af
}
IL_009b: ldarg.0
IL_009c: ldc.i4.s -2
IL_009e: stfld ""int C.<>c.<<-ctor>b__7_1>d.<>1__state""
IL_00a3: ldarg.0
IL_00a4: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<>c.<<-ctor>b__7_1>d.<>t__builder""
IL_00a9: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_00ae: nop
IL_00af: ret
}
");
}
[Fact]
public void UpdateAsync_Await_Remove_RemoveAdd()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:0>await M1()</N:0>;
<N:1>await M3()</N:1>;
<N:2>await M2()</N:2>;
End();
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:0>await M1()</N:0>;
<N:2>await M2()</N:2>;
End();
}
}");
var source2 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
await M3();
<N:0>await M1()</N:0>;
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation0.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__4"" />
<encStateMachineStateMap>
<state number=""0"" offset=""16"" />
<state number=""1"" offset=""48"" />
<state number=""2"" offset=""80"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
");
v0.VerifyPdb("C+<F>d__4.MoveNext", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<F>d__4"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLocalSlotMap>
<slot kind=""27"" offset=""0"" />
<slot kind=""33"" offset=""16"" />
<slot kind=""temp"" />
<slot kind=""33"" offset=""48"" />
<slot kind=""33"" offset=""80"" />
<slot kind=""temp"" />
</encLocalSlotMap>
</customDebugInfo>
<asyncInfo>
<kickoffMethod declaringType=""C"" methodName=""F"" />
<await yield=""0x45"" resume=""0x63"" declaringType=""C+<F>d__4"" methodName=""MoveNext"" />
<await yield=""0xa4"" resume=""0xc2"" declaringType=""C+<F>d__4"" methodName=""MoveNext"" />
<await yield=""0x104"" resume=""0x120"" declaringType=""C+<F>d__4"" methodName=""MoveNext"" />
</asyncInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeSequencePoints);
v0.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 380 (0x17c)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Runtime.CompilerServices.TaskAwaiter V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: switch (
IL_001b,
IL_001d,
IL_0022)
IL_0019: br.s IL_0027
IL_001b: br.s IL_0063
IL_001d: br IL_00c2
IL_0022: br IL_0120
IL_0027: nop
IL_0028: call ""System.Threading.Tasks.Task C.M1()""
IL_002d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0032: stloc.1
IL_0033: ldloca.s V_1
IL_0035: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_003a: brtrue.s IL_007f
IL_003c: ldarg.0
IL_003d: ldc.i4.0
IL_003e: dup
IL_003f: stloc.0
IL_0040: stfld ""int C.<F>d__4.<>1__state""
IL_0045: ldarg.0
IL_0046: ldloc.1
IL_0047: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_004c: ldarg.0
IL_004d: stloc.2
IL_004e: ldarg.0
IL_004f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0054: ldloca.s V_1
IL_0056: ldloca.s V_2
IL_0058: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_005d: nop
IL_005e: leave IL_017b
IL_0063: ldarg.0
IL_0064: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0069: stloc.1
IL_006a: ldarg.0
IL_006b: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0070: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0076: ldarg.0
IL_0077: ldc.i4.m1
IL_0078: dup
IL_0079: stloc.0
IL_007a: stfld ""int C.<F>d__4.<>1__state""
IL_007f: ldloca.s V_1
IL_0081: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0086: nop
IL_0087: call ""System.Threading.Tasks.Task C.M3()""
IL_008c: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0091: stloc.3
IL_0092: ldloca.s V_3
IL_0094: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0099: brtrue.s IL_00de
IL_009b: ldarg.0
IL_009c: ldc.i4.1
IL_009d: dup
IL_009e: stloc.0
IL_009f: stfld ""int C.<F>d__4.<>1__state""
IL_00a4: ldarg.0
IL_00a5: ldloc.3
IL_00a6: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00ab: ldarg.0
IL_00ac: stloc.2
IL_00ad: ldarg.0
IL_00ae: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00b3: ldloca.s V_3
IL_00b5: ldloca.s V_2
IL_00b7: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_00bc: nop
IL_00bd: leave IL_017b
IL_00c2: ldarg.0
IL_00c3: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00c8: stloc.3
IL_00c9: ldarg.0
IL_00ca: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00cf: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00d5: ldarg.0
IL_00d6: ldc.i4.m1
IL_00d7: dup
IL_00d8: stloc.0
IL_00d9: stfld ""int C.<F>d__4.<>1__state""
IL_00de: ldloca.s V_3
IL_00e0: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00e5: nop
IL_00e6: call ""System.Threading.Tasks.Task C.M2()""
IL_00eb: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_00f0: stloc.s V_4
IL_00f2: ldloca.s V_4
IL_00f4: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_00f9: brtrue.s IL_013d
IL_00fb: ldarg.0
IL_00fc: ldc.i4.2
IL_00fd: dup
IL_00fe: stloc.0
IL_00ff: stfld ""int C.<F>d__4.<>1__state""
IL_0104: ldarg.0
IL_0105: ldloc.s V_4
IL_0107: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_010c: ldarg.0
IL_010d: stloc.2
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0114: ldloca.s V_4
IL_0116: ldloca.s V_2
IL_0118: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_011d: nop
IL_011e: leave.s IL_017b
IL_0120: ldarg.0
IL_0121: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0126: stloc.s V_4
IL_0128: ldarg.0
IL_0129: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_012e: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0134: ldarg.0
IL_0135: ldc.i4.m1
IL_0136: dup
IL_0137: stloc.0
IL_0138: stfld ""int C.<F>d__4.<>1__state""
IL_013d: ldloca.s V_4
IL_013f: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0144: nop
IL_0145: call ""void C.End()""
IL_014a: nop
IL_014b: leave.s IL_0167
}
catch System.Exception
{
IL_014d: stloc.s V_5
IL_014f: ldarg.0
IL_0150: ldc.i4.s -2
IL_0152: stfld ""int C.<F>d__4.<>1__state""
IL_0157: ldarg.0
IL_0158: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_015d: ldloc.s V_5
IL_015f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0164: nop
IL_0165: leave.s IL_017b
}
IL_0167: ldarg.0
IL_0168: ldc.i4.s -2
IL_016a: stfld ""int C.<F>d__4.<>1__state""
IL_016f: ldarg.0
IL_0170: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0175: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_017a: nop
IL_017b: ret
}
");
diff1.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 283 (0x11b)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.2
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0064
IL_0014: br IL_00c0
IL_0019: ldloc.0
IL_001a: ldc.i4.0
IL_001b: blt.s IL_0028
IL_001d: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_0022: newobj ""System.InvalidOperationException..ctor(string)""
IL_0027: throw
IL_0028: nop
IL_0029: call ""System.Threading.Tasks.Task C.M1()""
IL_002e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0033: stloc.1
IL_0034: ldloca.s V_1
IL_0036: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_003b: brtrue.s IL_0080
IL_003d: ldarg.0
IL_003e: ldc.i4.0
IL_003f: dup
IL_0040: stloc.0
IL_0041: stfld ""int C.<F>d__4.<>1__state""
IL_0046: ldarg.0
IL_0047: ldloc.1
IL_0048: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_004d: ldarg.0
IL_004e: stloc.2
IL_004f: ldarg.0
IL_0050: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0055: ldloca.s V_1
IL_0057: ldloca.s V_2
IL_0059: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_005e: nop
IL_005f: leave IL_011a
IL_0064: ldarg.0
IL_0065: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_006a: stloc.1
IL_006b: ldarg.0
IL_006c: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0071: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0077: ldarg.0
IL_0078: ldc.i4.m1
IL_0079: dup
IL_007a: stloc.0
IL_007b: stfld ""int C.<F>d__4.<>1__state""
IL_0080: ldloca.s V_1
IL_0082: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0087: nop
IL_0088: call ""System.Threading.Tasks.Task C.M2()""
IL_008d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0092: stloc.3
IL_0093: ldloca.s V_3
IL_0095: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_009a: brtrue.s IL_00dc
IL_009c: ldarg.0
IL_009d: ldc.i4.2
IL_009e: dup
IL_009f: stloc.0
IL_00a0: stfld ""int C.<F>d__4.<>1__state""
IL_00a5: ldarg.0
IL_00a6: ldloc.3
IL_00a7: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00ac: ldarg.0
IL_00ad: stloc.2
IL_00ae: ldarg.0
IL_00af: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00b4: ldloca.s V_3
IL_00b6: ldloca.s V_2
IL_00b8: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_00bd: nop
IL_00be: leave.s IL_011a
IL_00c0: ldarg.0
IL_00c1: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00c6: stloc.3
IL_00c7: ldarg.0
IL_00c8: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00cd: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00d3: ldarg.0
IL_00d4: ldc.i4.m1
IL_00d5: dup
IL_00d6: stloc.0
IL_00d7: stfld ""int C.<F>d__4.<>1__state""
IL_00dc: ldloca.s V_3
IL_00de: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00e3: nop
IL_00e4: call ""void C.End()""
IL_00e9: nop
IL_00ea: leave.s IL_0106
}
catch System.Exception
{
IL_00ec: stloc.s V_4
IL_00ee: ldarg.0
IL_00ef: ldc.i4.s -2
IL_00f1: stfld ""int C.<F>d__4.<>1__state""
IL_00f6: ldarg.0
IL_00f7: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00fc: ldloc.s V_4
IL_00fe: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0103: nop
IL_0104: leave.s IL_011a
}
IL_0106: ldarg.0
IL_0107: ldc.i4.s -2
IL_0109: stfld ""int C.<F>d__4.<>1__state""
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0114: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_0119: nop
IL_011a: ret
}
");
// note that CDI is not emitted to the delta since we already have the information captured in changed symbols:
diff1.VerifyPdb(Enumerable.Range(1, 20).Select(MetadataTokens.MethodDefinitionHandle), @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method token=""0x6000008"">
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x7"" hidden=""true"" document=""1"" />
<entry offset=""0x28"" startLine=""12"" startColumn=""5"" endLine=""12"" endColumn=""6"" document=""1"" />
<entry offset=""0x29"" startLine=""13"" startColumn=""14"" endLine=""13"" endColumn=""31"" document=""1"" />
<entry offset=""0x34"" hidden=""true"" document=""1"" />
<entry offset=""0x88"" startLine=""14"" startColumn=""14"" endLine=""14"" endColumn=""31"" document=""1"" />
<entry offset=""0x93"" hidden=""true"" document=""1"" />
<entry offset=""0xe4"" startLine=""15"" startColumn=""9"" endLine=""15"" endColumn=""15"" document=""1"" />
<entry offset=""0xec"" hidden=""true"" document=""1"" />
<entry offset=""0x106"" startLine=""16"" startColumn=""5"" endLine=""16"" endColumn=""6"" document=""1"" />
<entry offset=""0x10e"" hidden=""true"" document=""1"" />
</sequencePoints>
<asyncInfo>
<kickoffMethod token=""0x6000005"" />
<await yield=""0x46"" resume=""0x64"" token=""0x6000008"" />
<await yield=""0xa5"" resume=""0xc0"" token=""0x6000008"" />
</asyncInfo>
</method>
</methods>
</symbols>
");
diff2.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 283 (0x11b)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.3
IL_000e: beq.s IL_0017
IL_0010: br.s IL_0019
IL_0012: br IL_00c0
IL_0017: br.s IL_0064
IL_0019: ldloc.0
IL_001a: ldc.i4.0
IL_001b: blt.s IL_0028
IL_001d: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_0022: newobj ""System.InvalidOperationException..ctor(string)""
IL_0027: throw
IL_0028: nop
IL_0029: call ""System.Threading.Tasks.Task C.M3()""
IL_002e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0033: stloc.1
IL_0034: ldloca.s V_1
IL_0036: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_003b: brtrue.s IL_0080
IL_003d: ldarg.0
IL_003e: ldc.i4.3
IL_003f: dup
IL_0040: stloc.0
IL_0041: stfld ""int C.<F>d__4.<>1__state""
IL_0046: ldarg.0
IL_0047: ldloc.1
IL_0048: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_004d: ldarg.0
IL_004e: stloc.2
IL_004f: ldarg.0
IL_0050: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0055: ldloca.s V_1
IL_0057: ldloca.s V_2
IL_0059: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_005e: nop
IL_005f: leave IL_011a
IL_0064: ldarg.0
IL_0065: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_006a: stloc.1
IL_006b: ldarg.0
IL_006c: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0071: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0077: ldarg.0
IL_0078: ldc.i4.m1
IL_0079: dup
IL_007a: stloc.0
IL_007b: stfld ""int C.<F>d__4.<>1__state""
IL_0080: ldloca.s V_1
IL_0082: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0087: nop
IL_0088: call ""System.Threading.Tasks.Task C.M1()""
IL_008d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0092: stloc.3
IL_0093: ldloca.s V_3
IL_0095: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_009a: brtrue.s IL_00dc
IL_009c: ldarg.0
IL_009d: ldc.i4.0
IL_009e: dup
IL_009f: stloc.0
IL_00a0: stfld ""int C.<F>d__4.<>1__state""
IL_00a5: ldarg.0
IL_00a6: ldloc.3
IL_00a7: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00ac: ldarg.0
IL_00ad: stloc.2
IL_00ae: ldarg.0
IL_00af: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00b4: ldloca.s V_3
IL_00b6: ldloca.s V_2
IL_00b8: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_00bd: nop
IL_00be: leave.s IL_011a
IL_00c0: ldarg.0
IL_00c1: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00c6: stloc.3
IL_00c7: ldarg.0
IL_00c8: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_00cd: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_00d3: ldarg.0
IL_00d4: ldc.i4.m1
IL_00d5: dup
IL_00d6: stloc.0
IL_00d7: stfld ""int C.<F>d__4.<>1__state""
IL_00dc: ldloca.s V_3
IL_00de: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_00e3: nop
IL_00e4: call ""void C.End()""
IL_00e9: nop
IL_00ea: leave.s IL_0106
}
catch System.Exception
{
IL_00ec: stloc.s V_4
IL_00ee: ldarg.0
IL_00ef: ldc.i4.s -2
IL_00f1: stfld ""int C.<F>d__4.<>1__state""
IL_00f6: ldarg.0
IL_00f7: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00fc: ldloc.s V_4
IL_00fe: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0103: nop
IL_0104: leave.s IL_011a
}
IL_0106: ldarg.0
IL_0107: ldc.i4.s -2
IL_0109: stfld ""int C.<F>d__4.<>1__state""
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0114: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_0119: nop
IL_011a: ret
}
");
}
[Fact]
public void UpdateAsync_Await_Remove_FirstAndLast()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:0>await M1()</N:0>;
<N:1>await M2()</N:1>;
<N:2>await M3()</N:2>;
End();
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static void End() {}
static async Task F()
{
<N:1>await M2()</N:1>;
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifyIL("C.<F>d__4.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 176 (0xb0)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__4 V_2,
System.Exception V_3)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__4.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.1
IL_0009: beq.s IL_000d
IL_000b: br.s IL_000f
IL_000d: br.s IL_0057
IL_000f: ldloc.0
IL_0010: ldc.i4.0
IL_0011: blt.s IL_001e
IL_0013: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_0018: newobj ""System.InvalidOperationException..ctor(string)""
IL_001d: throw
IL_001e: nop
IL_001f: call ""System.Threading.Tasks.Task C.M2()""
IL_0024: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0029: stloc.1
IL_002a: ldloca.s V_1
IL_002c: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0031: brtrue.s IL_0073
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: dup
IL_0036: stloc.0
IL_0037: stfld ""int C.<F>d__4.<>1__state""
IL_003c: ldarg.0
IL_003d: ldloc.1
IL_003e: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0043: ldarg.0
IL_0044: stloc.2
IL_0045: ldarg.0
IL_0046: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_004b: ldloca.s V_1
IL_004d: ldloca.s V_2
IL_004f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__4>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__4)""
IL_0054: nop
IL_0055: leave.s IL_00af
IL_0057: ldarg.0
IL_0058: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_005d: stloc.1
IL_005e: ldarg.0
IL_005f: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__4.<>u__1""
IL_0064: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_006a: ldarg.0
IL_006b: ldc.i4.m1
IL_006c: dup
IL_006d: stloc.0
IL_006e: stfld ""int C.<F>d__4.<>1__state""
IL_0073: ldloca.s V_1
IL_0075: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_007a: nop
IL_007b: call ""void C.End()""
IL_0080: nop
IL_0081: leave.s IL_009b
}
catch System.Exception
{
IL_0083: stloc.3
IL_0084: ldarg.0
IL_0085: ldc.i4.s -2
IL_0087: stfld ""int C.<F>d__4.<>1__state""
IL_008c: ldarg.0
IL_008d: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_0092: ldloc.3
IL_0093: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0098: nop
IL_0099: leave.s IL_00af
}
IL_009b: ldarg.0
IL_009c: ldc.i4.s -2
IL_009e: stfld ""int C.<F>d__4.<>1__state""
IL_00a3: ldarg.0
IL_00a4: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__4.<>t__builder""
IL_00a9: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_00ae: nop
IL_00af: ret
}
");
}
[Fact]
public void UpdateAsync_Await_Remove_TryBlock()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static void Start() {}
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static Task M4() => null;
static Task M5() => null;
static void End() {}
static async Task F()
{
Start();
<N:0>await M1()</N:0>;
try
{
<N:1>await M2()</N:1>;
<N:2>await M3()</N:2>;
}
catch
{
<N:3>await M4()</N:3>;
<N:4>await M5()</N:4>;
}
End();
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static void Start() {}
static Task M1() => null;
static Task M2() => null;
static Task M3() => null;
static Task M4() => null;
static Task M5() => null;
static void End() {}
static async Task F()
{
Start();
try
{
<N:1>await M2()</N:1>;
}
catch
{
<N:2>await M4()</N:2>;
}
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyIL("C.<F>d__7.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 671 (0x29f)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__7 V_2,
System.Runtime.CompilerServices.TaskAwaiter V_3,
System.Runtime.CompilerServices.TaskAwaiter V_4,
object V_5,
int V_6,
System.Runtime.CompilerServices.TaskAwaiter V_7,
System.Runtime.CompilerServices.TaskAwaiter V_8,
System.Exception V_9)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__7.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: switch (
IL_0023,
IL_0025,
IL_0025,
IL_0027,
IL_002c)
IL_0021: br.s IL_0031
IL_0023: br.s IL_0073
IL_0025: br.s IL_009e
IL_0027: br IL_01da
IL_002c: br IL_0239
IL_0031: nop
IL_0032: call ""void C.Start()""
IL_0037: nop
IL_0038: call ""System.Threading.Tasks.Task C.M1()""
IL_003d: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0042: stloc.1
IL_0043: ldloca.s V_1
IL_0045: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_004a: brtrue.s IL_008f
IL_004c: ldarg.0
IL_004d: ldc.i4.0
IL_004e: dup
IL_004f: stloc.0
IL_0050: stfld ""int C.<F>d__7.<>1__state""
IL_0055: ldarg.0
IL_0056: ldloc.1
IL_0057: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_005c: ldarg.0
IL_005d: stloc.2
IL_005e: ldarg.0
IL_005f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_0064: ldloca.s V_1
IL_0066: ldloca.s V_2
IL_0068: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_006d: nop
IL_006e: leave IL_029e
IL_0073: ldarg.0
IL_0074: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0079: stloc.1
IL_007a: ldarg.0
IL_007b: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0080: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0086: ldarg.0
IL_0087: ldc.i4.m1
IL_0088: dup
IL_0089: stloc.0
IL_008a: stfld ""int C.<F>d__7.<>1__state""
IL_008f: ldloca.s V_1
IL_0091: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0096: nop
IL_0097: ldarg.0
IL_0098: ldc.i4.0
IL_0099: stfld ""int C.<F>d__7.<>s__2""
IL_009e: nop
.try
{
IL_009f: ldloc.0
IL_00a0: ldc.i4.1
IL_00a1: beq.s IL_00ab
IL_00a3: br.s IL_00a5
IL_00a5: ldloc.0
IL_00a6: ldc.i4.2
IL_00a7: beq.s IL_00ad
IL_00a9: br.s IL_00b2
IL_00ab: br.s IL_00ee
IL_00ad: br IL_014f
IL_00b2: nop
IL_00b3: call ""System.Threading.Tasks.Task C.M2()""
IL_00b8: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_00bd: stloc.3
IL_00be: ldloca.s V_3
IL_00c0: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_00c5: brtrue.s IL_010a
IL_00c7: ldarg.0
IL_00c8: ldc.i4.1
IL_00c9: dup
IL_00ca: stloc.0
IL_00cb: stfld ""int C.<F>d__7.<>1__state""
IL_00d0: ldarg.0
IL_00d1: ldloc.3
IL_00d2: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_00d7: ldarg.0
IL_00d8: stloc.2
IL_00d9: ldarg.0
IL_00da: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_00df: ldloca.s V_3
IL_00e1: ldloca.s V_2
IL_00e3: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_00e8: nop
IL_00e9: leave IL_029e
IL_00ee: ldarg.0
IL_00ef: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_00f4: stloc.3
IL_00f5: ldarg.0
IL_00f6: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_00fb: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0101: ldarg.0
IL_0102: ldc.i4.m1
IL_0103: dup
IL_0104: stloc.0
IL_0105: stfld ""int C.<F>d__7.<>1__state""
IL_010a: ldloca.s V_3
IL_010c: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0111: nop
IL_0112: call ""System.Threading.Tasks.Task C.M3()""
IL_0117: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_011c: stloc.s V_4
IL_011e: ldloca.s V_4
IL_0120: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0125: brtrue.s IL_016c
IL_0127: ldarg.0
IL_0128: ldc.i4.2
IL_0129: dup
IL_012a: stloc.0
IL_012b: stfld ""int C.<F>d__7.<>1__state""
IL_0130: ldarg.0
IL_0131: ldloc.s V_4
IL_0133: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0138: ldarg.0
IL_0139: stloc.2
IL_013a: ldarg.0
IL_013b: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_0140: ldloca.s V_4
IL_0142: ldloca.s V_2
IL_0144: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_0149: nop
IL_014a: leave IL_029e
IL_014f: ldarg.0
IL_0150: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0155: stloc.s V_4
IL_0157: ldarg.0
IL_0158: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_015d: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0163: ldarg.0
IL_0164: ldc.i4.m1
IL_0165: dup
IL_0166: stloc.0
IL_0167: stfld ""int C.<F>d__7.<>1__state""
IL_016c: ldloca.s V_4
IL_016e: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0173: nop
IL_0174: nop
IL_0175: leave.s IL_018a
}
catch object
{
IL_0177: stloc.s V_5
IL_0179: ldarg.0
IL_017a: ldloc.s V_5
IL_017c: stfld ""object C.<F>d__7.<>s__1""
IL_0181: ldarg.0
IL_0182: ldc.i4.1
IL_0183: stfld ""int C.<F>d__7.<>s__2""
IL_0188: leave.s IL_018a
}
IL_018a: ldarg.0
IL_018b: ldfld ""int C.<F>d__7.<>s__2""
IL_0190: stloc.s V_6
IL_0192: ldloc.s V_6
IL_0194: ldc.i4.1
IL_0195: beq.s IL_019c
IL_0197: br IL_0261
IL_019c: nop
IL_019d: call ""System.Threading.Tasks.Task C.M4()""
IL_01a2: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_01a7: stloc.s V_7
IL_01a9: ldloca.s V_7
IL_01ab: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_01b0: brtrue.s IL_01f7
IL_01b2: ldarg.0
IL_01b3: ldc.i4.3
IL_01b4: dup
IL_01b5: stloc.0
IL_01b6: stfld ""int C.<F>d__7.<>1__state""
IL_01bb: ldarg.0
IL_01bc: ldloc.s V_7
IL_01be: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_01c3: ldarg.0
IL_01c4: stloc.2
IL_01c5: ldarg.0
IL_01c6: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_01cb: ldloca.s V_7
IL_01cd: ldloca.s V_2
IL_01cf: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_01d4: nop
IL_01d5: leave IL_029e
IL_01da: ldarg.0
IL_01db: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_01e0: stloc.s V_7
IL_01e2: ldarg.0
IL_01e3: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_01e8: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_01ee: ldarg.0
IL_01ef: ldc.i4.m1
IL_01f0: dup
IL_01f1: stloc.0
IL_01f2: stfld ""int C.<F>d__7.<>1__state""
IL_01f7: ldloca.s V_7
IL_01f9: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_01fe: nop
IL_01ff: call ""System.Threading.Tasks.Task C.M5()""
IL_0204: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_0209: stloc.s V_8
IL_020b: ldloca.s V_8
IL_020d: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0212: brtrue.s IL_0256
IL_0214: ldarg.0
IL_0215: ldc.i4.4
IL_0216: dup
IL_0217: stloc.0
IL_0218: stfld ""int C.<F>d__7.<>1__state""
IL_021d: ldarg.0
IL_021e: ldloc.s V_8
IL_0220: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0225: ldarg.0
IL_0226: stloc.2
IL_0227: ldarg.0
IL_0228: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_022d: ldloca.s V_8
IL_022f: ldloca.s V_2
IL_0231: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_0236: nop
IL_0237: leave.s IL_029e
IL_0239: ldarg.0
IL_023a: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_023f: stloc.s V_8
IL_0241: ldarg.0
IL_0242: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0247: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_024d: ldarg.0
IL_024e: ldc.i4.m1
IL_024f: dup
IL_0250: stloc.0
IL_0251: stfld ""int C.<F>d__7.<>1__state""
IL_0256: ldloca.s V_8
IL_0258: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_025d: nop
IL_025e: nop
IL_025f: br.s IL_0261
IL_0261: ldarg.0
IL_0262: ldnull
IL_0263: stfld ""object C.<F>d__7.<>s__1""
IL_0268: call ""void C.End()""
IL_026d: nop
IL_026e: leave.s IL_028a
}
catch System.Exception
{
IL_0270: stloc.s V_9
IL_0272: ldarg.0
IL_0273: ldc.i4.s -2
IL_0275: stfld ""int C.<F>d__7.<>1__state""
IL_027a: ldarg.0
IL_027b: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_0280: ldloc.s V_9
IL_0282: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0287: nop
IL_0288: leave.s IL_029e
}
IL_028a: ldarg.0
IL_028b: ldc.i4.s -2
IL_028d: stfld ""int C.<F>d__7.<>1__state""
IL_0292: ldarg.0
IL_0293: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_0298: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_029d: nop
IL_029e: ret
}
");
diff1.VerifyIL("C.<F>d__7.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 356 (0x164)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__7 V_2,
object V_3,
int V_4,
System.Runtime.CompilerServices.TaskAwaiter V_5,
System.Exception V_6)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__7.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.1
IL_0009: beq.s IL_0013
IL_000b: br.s IL_000d
IL_000d: ldloc.0
IL_000e: ldc.i4.2
IL_000f: beq.s IL_0015
IL_0011: br.s IL_001a
IL_0013: br.s IL_0037
IL_0015: br IL_00fe
IL_001a: ldloc.0
IL_001b: ldc.i4.0
IL_001c: blt.s IL_0029
IL_001e: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_0023: newobj ""System.InvalidOperationException..ctor(string)""
IL_0028: throw
IL_0029: nop
IL_002a: call ""void C.Start()""
IL_002f: nop
IL_0030: ldarg.0
IL_0031: ldc.i4.0
IL_0032: stfld ""int C.<F>d__7.<>s__4""
IL_0037: nop
.try
{
IL_0038: ldloc.0
IL_0039: ldc.i4.1
IL_003a: beq.s IL_003e
IL_003c: br.s IL_0040
IL_003e: br.s IL_007c
IL_0040: nop
IL_0041: call ""System.Threading.Tasks.Task C.M2()""
IL_0046: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_004b: stloc.1
IL_004c: ldloca.s V_1
IL_004e: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0053: brtrue.s IL_0098
IL_0055: ldarg.0
IL_0056: ldc.i4.1
IL_0057: dup
IL_0058: stloc.0
IL_0059: stfld ""int C.<F>d__7.<>1__state""
IL_005e: ldarg.0
IL_005f: ldloc.1
IL_0060: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0065: ldarg.0
IL_0066: stloc.2
IL_0067: ldarg.0
IL_0068: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_006d: ldloca.s V_1
IL_006f: ldloca.s V_2
IL_0071: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_0076: nop
IL_0077: leave IL_0163
IL_007c: ldarg.0
IL_007d: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0082: stloc.1
IL_0083: ldarg.0
IL_0084: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0089: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_008f: ldarg.0
IL_0090: ldc.i4.m1
IL_0091: dup
IL_0092: stloc.0
IL_0093: stfld ""int C.<F>d__7.<>1__state""
IL_0098: ldloca.s V_1
IL_009a: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_009f: nop
IL_00a0: nop
IL_00a1: leave.s IL_00b4
}
catch object
{
IL_00a3: stloc.3
IL_00a4: ldarg.0
IL_00a5: ldloc.3
IL_00a6: stfld ""object C.<F>d__7.<>s__3""
IL_00ab: ldarg.0
IL_00ac: ldc.i4.1
IL_00ad: stfld ""int C.<F>d__7.<>s__4""
IL_00b2: leave.s IL_00b4
}
IL_00b4: ldarg.0
IL_00b5: ldfld ""int C.<F>d__7.<>s__4""
IL_00ba: stloc.s V_4
IL_00bc: ldloc.s V_4
IL_00be: ldc.i4.1
IL_00bf: beq.s IL_00c3
IL_00c1: br.s IL_0126
IL_00c3: nop
IL_00c4: call ""System.Threading.Tasks.Task C.M4()""
IL_00c9: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_00ce: stloc.s V_5
IL_00d0: ldloca.s V_5
IL_00d2: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_00d7: brtrue.s IL_011b
IL_00d9: ldarg.0
IL_00da: ldc.i4.2
IL_00db: dup
IL_00dc: stloc.0
IL_00dd: stfld ""int C.<F>d__7.<>1__state""
IL_00e2: ldarg.0
IL_00e3: ldloc.s V_5
IL_00e5: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_00ea: ldarg.0
IL_00eb: stloc.2
IL_00ec: ldarg.0
IL_00ed: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_00f2: ldloca.s V_5
IL_00f4: ldloca.s V_2
IL_00f6: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__7>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__7)""
IL_00fb: nop
IL_00fc: leave.s IL_0163
IL_00fe: ldarg.0
IL_00ff: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_0104: stloc.s V_5
IL_0106: ldarg.0
IL_0107: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__7.<>u__1""
IL_010c: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0112: ldarg.0
IL_0113: ldc.i4.m1
IL_0114: dup
IL_0115: stloc.0
IL_0116: stfld ""int C.<F>d__7.<>1__state""
IL_011b: ldloca.s V_5
IL_011d: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0122: nop
IL_0123: nop
IL_0124: br.s IL_0126
IL_0126: ldarg.0
IL_0127: ldnull
IL_0128: stfld ""object C.<F>d__7.<>s__3""
IL_012d: call ""void C.End()""
IL_0132: nop
IL_0133: leave.s IL_014f
}
catch System.Exception
{
IL_0135: stloc.s V_6
IL_0137: ldarg.0
IL_0138: ldc.i4.s -2
IL_013a: stfld ""int C.<F>d__7.<>1__state""
IL_013f: ldarg.0
IL_0140: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_0145: ldloc.s V_6
IL_0147: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_014c: nop
IL_014d: leave.s IL_0163
}
IL_014f: ldarg.0
IL_0150: ldc.i4.s -2
IL_0152: stfld ""int C.<F>d__7.<>1__state""
IL_0157: ldarg.0
IL_0158: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__7.<>t__builder""
IL_015d: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_0162: nop
IL_0163: ret
}
");
}
[Fact]
public void UpdateAsync_AwaitDeclarationMappedToNonAwait()
{
var source0 = MarkedSource(@"
using System;
using System.Threading.Tasks;
class C
{
static async Task F()
{
<N:0>await Task.CompletedTask</N:0>;
IAsyncDisposable <N:1>x = G()</N:1>, <N:2>y = G()</N:2>;
}
static IAsyncDisposable G() => null;
}");
var source1 = MarkedSource(@"
using System;
using System.Threading.Tasks;
class C
{
static async Task F()
{
<N:0>await Task.CompletedTask</N:0>;
await using IAsyncDisposable <N:1>x = G()</N:1>, <N:2>y = G()</N:2>;
}
static IAsyncDisposable G() => null;
}");
var asyncStreamsTree = Parse(AsyncStreamsTypes, options: (CSharpParseOptions)source0.Tree.Options);
var compilation0 = CreateCompilationWithTasksExtensions(new[] { source0.Tree, asyncStreamsTree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(new[] { source1.Tree, asyncStreamsTree });
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
// Note that the CDI contains local variable declaration mapping to facilitate local variable slot allocation,
// but these are not included in the state machine map since the V0 version of the local declaration statement does not have "await" keyword.
// Therefore, the V1 version will not be able ot match the local declaration statements to their previous versions when emitting
// state machine states and create new states for them as expected.
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encLocalSlotMap>
<slot kind=""0"" offset=""79"" />
<slot kind=""0"" offset=""99"" />
</encLocalSlotMap>
<encStateMachineStateMap>
<state number=""0"" offset=""16"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
// note preserved hoisted variables x, y:
v0.VerifySynthesizedFields("C.<F>d__0",
"int <>1__state",
"System.Runtime.CompilerServices.AsyncTaskMethodBuilder <>t__builder",
"System.IAsyncDisposable <x>5__1",
"System.IAsyncDisposable <y>5__2",
"System.Runtime.CompilerServices.TaskAwaiter <>u__1");
diff1.VerifySynthesizedFields("C.<F>d__0",
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder",
"<x>5__1: System.IAsyncDisposable",
"<y>5__2: System.IAsyncDisposable",
"<>s__3: object",
"<>s__4: int",
"<>s__5: object",
"<>s__6: int",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter",
"<>u__2: System.Runtime.CompilerServices.ValueTaskAwaiter");
diff1.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 678 (0x2a6)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter V_1,
C.<F>d__0 V_2,
object V_3,
System.Runtime.CompilerServices.ValueTaskAwaiter V_4,
System.Threading.Tasks.ValueTask V_5,
System.Exception V_6,
int V_7,
System.Runtime.CompilerServices.ValueTaskAwaiter V_8)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: switch (
IL_001b,
IL_001d,
IL_001f)
IL_0019: br.s IL_0024
IL_001b: br.s IL_0060
IL_001d: br.s IL_009d
IL_001f: br IL_01e9
IL_0024: nop
IL_0025: call ""System.Threading.Tasks.Task System.Threading.Tasks.Task.CompletedTask.get""
IL_002a: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_002f: stloc.1
IL_0030: ldloca.s V_1
IL_0032: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0037: brtrue.s IL_007c
IL_0039: ldarg.0
IL_003a: ldc.i4.0
IL_003b: dup
IL_003c: stloc.0
IL_003d: stfld ""int C.<F>d__0.<>1__state""
IL_0042: ldarg.0
IL_0043: ldloc.1
IL_0044: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0049: ldarg.0
IL_004a: stloc.2
IL_004b: ldarg.0
IL_004c: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0051: ldloca.s V_1
IL_0053: ldloca.s V_2
IL_0055: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__0)""
IL_005a: nop
IL_005b: leave IL_02a5
IL_0060: ldarg.0
IL_0061: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0066: stloc.1
IL_0067: ldarg.0
IL_0068: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_006d: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_0073: ldarg.0
IL_0074: ldc.i4.m1
IL_0075: dup
IL_0076: stloc.0
IL_0077: stfld ""int C.<F>d__0.<>1__state""
IL_007c: ldloca.s V_1
IL_007e: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_0083: nop
IL_0084: ldarg.0
IL_0085: call ""System.IAsyncDisposable C.G()""
IL_008a: stfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_008f: ldarg.0
IL_0090: ldnull
IL_0091: stfld ""object C.<F>d__0.<>s__3""
IL_0096: ldarg.0
IL_0097: ldc.i4.0
IL_0098: stfld ""int C.<F>d__0.<>s__4""
IL_009d: nop
.try
{
IL_009e: ldloc.0
IL_009f: ldc.i4.1
IL_00a0: beq.s IL_00a4
IL_00a2: br.s IL_00a6
IL_00a4: br.s IL_0123
IL_00a6: ldarg.0
IL_00a7: call ""System.IAsyncDisposable C.G()""
IL_00ac: stfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_00b1: ldarg.0
IL_00b2: ldnull
IL_00b3: stfld ""object C.<F>d__0.<>s__5""
IL_00b8: ldarg.0
IL_00b9: ldc.i4.0
IL_00ba: stfld ""int C.<F>d__0.<>s__6""
.try
{
IL_00bf: br.s IL_00c1
IL_00c1: ldarg.0
IL_00c2: ldc.i4.1
IL_00c3: stfld ""int C.<F>d__0.<>s__6""
IL_00c8: leave.s IL_00d4
}
catch object
{
IL_00ca: stloc.3
IL_00cb: ldarg.0
IL_00cc: ldloc.3
IL_00cd: stfld ""object C.<F>d__0.<>s__5""
IL_00d2: leave.s IL_00d4
}
IL_00d4: ldarg.0
IL_00d5: ldfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_00da: brfalse.s IL_0148
IL_00dc: ldarg.0
IL_00dd: ldfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_00e2: callvirt ""System.Threading.Tasks.ValueTask System.IAsyncDisposable.DisposeAsync()""
IL_00e7: stloc.s V_5
IL_00e9: ldloca.s V_5
IL_00eb: call ""System.Runtime.CompilerServices.ValueTaskAwaiter System.Threading.Tasks.ValueTask.GetAwaiter()""
IL_00f0: stloc.s V_4
IL_00f2: ldloca.s V_4
IL_00f4: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter.IsCompleted.get""
IL_00f9: brtrue.s IL_0140
IL_00fb: ldarg.0
IL_00fc: ldc.i4.1
IL_00fd: dup
IL_00fe: stloc.0
IL_00ff: stfld ""int C.<F>d__0.<>1__state""
IL_0104: ldarg.0
IL_0105: ldloc.s V_4
IL_0107: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_010c: ldarg.0
IL_010d: stloc.2
IL_010e: ldarg.0
IL_010f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0114: ldloca.s V_4
IL_0116: ldloca.s V_2
IL_0118: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter, ref C.<F>d__0)""
IL_011d: nop
IL_011e: leave IL_02a5
IL_0123: ldarg.0
IL_0124: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0129: stloc.s V_4
IL_012b: ldarg.0
IL_012c: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0131: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter""
IL_0137: ldarg.0
IL_0138: ldc.i4.m1
IL_0139: dup
IL_013a: stloc.0
IL_013b: stfld ""int C.<F>d__0.<>1__state""
IL_0140: ldloca.s V_4
IL_0142: call ""void System.Runtime.CompilerServices.ValueTaskAwaiter.GetResult()""
IL_0147: nop
IL_0148: ldarg.0
IL_0149: ldfld ""object C.<F>d__0.<>s__5""
IL_014e: stloc.3
IL_014f: ldloc.3
IL_0150: brfalse.s IL_016d
IL_0152: ldloc.3
IL_0153: isinst ""System.Exception""
IL_0158: stloc.s V_6
IL_015a: ldloc.s V_6
IL_015c: brtrue.s IL_0160
IL_015e: ldloc.3
IL_015f: throw
IL_0160: ldloc.s V_6
IL_0162: call ""System.Runtime.ExceptionServices.ExceptionDispatchInfo System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(System.Exception)""
IL_0167: callvirt ""void System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()""
IL_016c: nop
IL_016d: ldarg.0
IL_016e: ldfld ""int C.<F>d__0.<>s__6""
IL_0173: stloc.s V_7
IL_0175: ldloc.s V_7
IL_0177: ldc.i4.1
IL_0178: beq.s IL_017c
IL_017a: br.s IL_017e
IL_017c: br.s IL_0187
IL_017e: ldarg.0
IL_017f: ldnull
IL_0180: stfld ""object C.<F>d__0.<>s__5""
IL_0185: leave.s IL_019a
IL_0187: ldarg.0
IL_0188: ldc.i4.1
IL_0189: stfld ""int C.<F>d__0.<>s__4""
IL_018e: leave.s IL_019a
}
catch object
{
IL_0190: stloc.3
IL_0191: ldarg.0
IL_0192: ldloc.3
IL_0193: stfld ""object C.<F>d__0.<>s__3""
IL_0198: leave.s IL_019a
}
IL_019a: ldarg.0
IL_019b: ldfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_01a0: brfalse.s IL_020e
IL_01a2: ldarg.0
IL_01a3: ldfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_01a8: callvirt ""System.Threading.Tasks.ValueTask System.IAsyncDisposable.DisposeAsync()""
IL_01ad: stloc.s V_5
IL_01af: ldloca.s V_5
IL_01b1: call ""System.Runtime.CompilerServices.ValueTaskAwaiter System.Threading.Tasks.ValueTask.GetAwaiter()""
IL_01b6: stloc.s V_8
IL_01b8: ldloca.s V_8
IL_01ba: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter.IsCompleted.get""
IL_01bf: brtrue.s IL_0206
IL_01c1: ldarg.0
IL_01c2: ldc.i4.2
IL_01c3: dup
IL_01c4: stloc.0
IL_01c5: stfld ""int C.<F>d__0.<>1__state""
IL_01ca: ldarg.0
IL_01cb: ldloc.s V_8
IL_01cd: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_01d2: ldarg.0
IL_01d3: stloc.2
IL_01d4: ldarg.0
IL_01d5: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_01da: ldloca.s V_8
IL_01dc: ldloca.s V_2
IL_01de: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter, ref C.<F>d__0)""
IL_01e3: nop
IL_01e4: leave IL_02a5
IL_01e9: ldarg.0
IL_01ea: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_01ef: stloc.s V_8
IL_01f1: ldarg.0
IL_01f2: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_01f7: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter""
IL_01fd: ldarg.0
IL_01fe: ldc.i4.m1
IL_01ff: dup
IL_0200: stloc.0
IL_0201: stfld ""int C.<F>d__0.<>1__state""
IL_0206: ldloca.s V_8
IL_0208: call ""void System.Runtime.CompilerServices.ValueTaskAwaiter.GetResult()""
IL_020d: nop
IL_020e: ldarg.0
IL_020f: ldfld ""object C.<F>d__0.<>s__3""
IL_0214: stloc.3
IL_0215: ldloc.3
IL_0216: brfalse.s IL_0233
IL_0218: ldloc.3
IL_0219: isinst ""System.Exception""
IL_021e: stloc.s V_6
IL_0220: ldloc.s V_6
IL_0222: brtrue.s IL_0226
IL_0224: ldloc.3
IL_0225: throw
IL_0226: ldloc.s V_6
IL_0228: call ""System.Runtime.ExceptionServices.ExceptionDispatchInfo System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(System.Exception)""
IL_022d: callvirt ""void System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()""
IL_0232: nop
IL_0233: ldarg.0
IL_0234: ldfld ""int C.<F>d__0.<>s__4""
IL_0239: stloc.s V_7
IL_023b: ldloc.s V_7
IL_023d: ldc.i4.1
IL_023e: beq.s IL_0242
IL_0240: br.s IL_0244
IL_0242: leave.s IL_0283
IL_0244: ldarg.0
IL_0245: ldnull
IL_0246: stfld ""object C.<F>d__0.<>s__3""
IL_024b: ldarg.0
IL_024c: ldnull
IL_024d: stfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_0252: ldarg.0
IL_0253: ldnull
IL_0254: stfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_0259: leave.s IL_0283
}
catch System.Exception
{
IL_025b: stloc.s V_6
IL_025d: ldarg.0
IL_025e: ldc.i4.s -2
IL_0260: stfld ""int C.<F>d__0.<>1__state""
IL_0265: ldarg.0
IL_0266: ldnull
IL_0267: stfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_026c: ldarg.0
IL_026d: ldnull
IL_026e: stfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_0273: ldarg.0
IL_0274: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0279: ldloc.s V_6
IL_027b: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_0280: nop
IL_0281: leave.s IL_02a5
}
IL_0283: ldarg.0
IL_0284: ldc.i4.s -2
IL_0286: stfld ""int C.<F>d__0.<>1__state""
IL_028b: ldarg.0
IL_028c: ldnull
IL_028d: stfld ""System.IAsyncDisposable C.<F>d__0.<x>5__1""
IL_0292: ldarg.0
IL_0293: ldnull
IL_0294: stfld ""System.IAsyncDisposable C.<F>d__0.<y>5__2""
IL_0299: ldarg.0
IL_029a: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_029f: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_02a4: nop
IL_02a5: ret
}");
}
[Fact]
public void UpdateIterator_UserDefinedVariables_NoChange()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int <N:0>x = p</N:0>;
<N:1>yield return 1</N:1>;
}
}");
var source1 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int <N:0>x = p</N:0>;
<N:1>yield return 2</N:1>;
}
}");
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
var symReader = v0.CreateSymReader();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, symReader.GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1, GetSyntaxMapFromMarkers(source0, source1))));
// Verify delta metadata contains expected rows.
using var md1 = diff1.GetMetadata();
// Verify that no new TypeDefs, FieldDefs or MethodDefs were added,
// 3 methods were updated:
// - the kick-off method (might be changed if the method previously wasn't an iterator)
// - Finally method
// - MoveNext method
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 69 (0x45)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003c
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldarg.0
IL_0022: ldfld ""int C.<F>d__0.p""
IL_0027: stfld ""int C.<F>d__0.<x>5__1""
IL_002c: ldarg.0
IL_002d: ldc.i4.2
IL_002e: stfld ""int C.<F>d__0.<>2__current""
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: stfld ""int C.<F>d__0.<>1__state""
IL_003a: ldc.i4.1
IL_003b: ret
IL_003c: ldarg.0
IL_003d: ldc.i4.m1
IL_003e: stfld ""int C.<F>d__0.<>1__state""
IL_0043: ldc.i4.0
IL_0044: ret
}");
}
[Fact]
public void UpdateIterator_UserDefinedVariables_AddVariable()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int <N:0>x = p</N:0>;
<N:1>yield return x;</N:1>
}
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int y = 1234;
int <N:0>x = p</N:0>;
<N:1>yield return y</N:1>;
Console.WriteLine(x);
}
}");
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
var symReader = v0.CreateSymReader();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, symReader.GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1, GetSyntaxMapFromMarkers(source0, source1))));
// Verify delta metadata contains expected rows.
using var md1 = diff1.GetMetadata();
// 1 field def added & 3 methods updated
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(7, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 97 (0x61)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_004c
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4 0x4d2
IL_0026: stfld ""int C.<F>d__0.<y>5__2""
IL_002b: ldarg.0
IL_002c: ldarg.0
IL_002d: ldfld ""int C.<F>d__0.p""
IL_0032: stfld ""int C.<F>d__0.<x>5__1""
IL_0037: ldarg.0
IL_0038: ldarg.0
IL_0039: ldfld ""int C.<F>d__0.<y>5__2""
IL_003e: stfld ""int C.<F>d__0.<>2__current""
IL_0043: ldarg.0
IL_0044: ldc.i4.1
IL_0045: stfld ""int C.<F>d__0.<>1__state""
IL_004a: ldc.i4.1
IL_004b: ret
IL_004c: ldarg.0
IL_004d: ldc.i4.m1
IL_004e: stfld ""int C.<F>d__0.<>1__state""
IL_0053: ldarg.0
IL_0054: ldfld ""int C.<F>d__0.<x>5__1""
IL_0059: call ""void System.Console.WriteLine(int)""
IL_005e: nop
IL_005f: ldc.i4.0
IL_0060: ret
}");
}
[Fact]
public void UpdateIterator_UserDefinedVariables_AddAndRemoveVariable()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int x = p;
<N:0>yield return x;</N:0>
}
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F(int p)
{
int y = 1234;
<N:0>yield return y;</N:0>
Console.WriteLine(p);
}
}");
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
var symReader = v0.CreateSymReader();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, symReader.GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1, GetSyntaxMapFromMarkers(source0, source1))));
// Verify delta metadata contains expected rows.
using var md1 = diff1.GetMetadata();
// 1 field def added & 3 methods updated
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(7, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.Param, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 85 (0x55)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_0040
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4 0x4d2
IL_0026: stfld ""int C.<F>d__0.<y>5__2""
IL_002b: ldarg.0
IL_002c: ldarg.0
IL_002d: ldfld ""int C.<F>d__0.<y>5__2""
IL_0032: stfld ""int C.<F>d__0.<>2__current""
IL_0037: ldarg.0
IL_0038: ldc.i4.1
IL_0039: stfld ""int C.<F>d__0.<>1__state""
IL_003e: ldc.i4.1
IL_003f: ret
IL_0040: ldarg.0
IL_0041: ldc.i4.m1
IL_0042: stfld ""int C.<F>d__0.<>1__state""
IL_0047: ldarg.0
IL_0048: ldfld ""int C.<F>d__0.p""
IL_004d: call ""void System.Console.WriteLine(int)""
IL_0052: nop
IL_0053: ldc.i4.0
IL_0054: ret
}");
}
[Fact]
public void UpdateIterator_UserDefinedVariables_ChangeVariableType()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
var <N:0>x = 1</N:0>;
<N:1>yield return 1</N:1>;
Console.WriteLine(x);
}
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
var <N:0>x = 1.0</N:0>;
<N:1>yield return 2</N:1>;
Console.WriteLine(x);
}
}");
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
var symReader = v0.CreateSymReader();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, symReader.GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1, GetSyntaxMapFromMarkers(source0, source1))));
// Verify delta metadata contains expected rows.
using var md1 = diff1.GetMetadata();
// 1 field def added & 3 methods updated
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(5, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 84 (0x54)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003f
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.r8 1
IL_002a: stfld ""double C.<F>d__0.<x>5__2""
IL_002f: ldarg.0
IL_0030: ldc.i4.2
IL_0031: stfld ""int C.<F>d__0.<>2__current""
IL_0036: ldarg.0
IL_0037: ldc.i4.1
IL_0038: stfld ""int C.<F>d__0.<>1__state""
IL_003d: ldc.i4.1
IL_003e: ret
IL_003f: ldarg.0
IL_0040: ldc.i4.m1
IL_0041: stfld ""int C.<F>d__0.<>1__state""
IL_0046: ldarg.0
IL_0047: ldfld ""double C.<F>d__0.<x>5__2""
IL_004c: call ""void System.Console.WriteLine(double)""
IL_0051: nop
IL_0052: ldc.i4.0
IL_0053: ret
}");
}
[Fact]
public void UpdateIterator_SynthesizedVariables_ChangeVariableType()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
<N:0>foreach</N:0> (object item in new[] { 1 }) { <N:1>yield return 1;</N:1> }
}
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
<N:0>foreach</N:0> (object item in new[] { 1.0 }) { <N:1>yield return 1;</N:1> }
}
}");
// Rude edit but the compiler should handle it.
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All));
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0, symbolValidator: module =>
{
Assert.Equal(new[]
{
"<>1__state: int",
"<>2__current: int",
"<>l__initialThreadId: int",
"<>s__1: int[]",
"<>s__2: int",
"<item>5__3: object"
}, module.GetFieldNamesAndTypes("C.<F>d__0"));
});
var symReader = v0.CreateSymReader();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var method0 = compilation0.GetMember<MethodSymbol>("C.F");
var method1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, symReader.GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, method0, method1, GetSyntaxMapFromMarkers(source0, source1))));
// Verify delta metadata contains expected rows.
using var md1 = diff1.GetMetadata();
// 1 field def added & 3 methods updated
CheckEncLogDefinitions(md1.Reader,
Row(3, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(7, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 161 (0xa1)
.maxstack 5
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_006b
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: nop
IL_0021: ldarg.0
IL_0022: ldc.i4.1
IL_0023: newarr ""double""
IL_0028: dup
IL_0029: ldc.i4.0
IL_002a: ldc.r8 1
IL_0033: stelem.r8
IL_0034: stfld ""double[] C.<F>d__0.<>s__4""
IL_0039: ldarg.0
IL_003a: ldc.i4.0
IL_003b: stfld ""int C.<F>d__0.<>s__2""
IL_0040: br.s IL_0088
IL_0042: ldarg.0
IL_0043: ldarg.0
IL_0044: ldfld ""double[] C.<F>d__0.<>s__4""
IL_0049: ldarg.0
IL_004a: ldfld ""int C.<F>d__0.<>s__2""
IL_004f: ldelem.r8
IL_0050: box ""double""
IL_0055: stfld ""object C.<F>d__0.<item>5__3""
IL_005a: nop
IL_005b: ldarg.0
IL_005c: ldc.i4.1
IL_005d: stfld ""int C.<F>d__0.<>2__current""
IL_0062: ldarg.0
IL_0063: ldc.i4.1
IL_0064: stfld ""int C.<F>d__0.<>1__state""
IL_0069: ldc.i4.1
IL_006a: ret
IL_006b: ldarg.0
IL_006c: ldc.i4.m1
IL_006d: stfld ""int C.<F>d__0.<>1__state""
IL_0072: nop
IL_0073: ldarg.0
IL_0074: ldnull
IL_0075: stfld ""object C.<F>d__0.<item>5__3""
IL_007a: ldarg.0
IL_007b: ldarg.0
IL_007c: ldfld ""int C.<F>d__0.<>s__2""
IL_0081: ldc.i4.1
IL_0082: add
IL_0083: stfld ""int C.<F>d__0.<>s__2""
IL_0088: ldarg.0
IL_0089: ldfld ""int C.<F>d__0.<>s__2""
IL_008e: ldarg.0
IL_008f: ldfld ""double[] C.<F>d__0.<>s__4""
IL_0094: ldlen
IL_0095: conv.i4
IL_0096: blt.s IL_0042
IL_0098: ldarg.0
IL_0099: ldnull
IL_009a: stfld ""double[] C.<F>d__0.<>s__4""
IL_009f: ldc.i4.0
IL_00a0: ret
}");
}
[Fact]
public void UpdateIterator_YieldReturn_Add()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static IEnumerable<int> F()
{
<N:0>yield return M1();</N:0>
<N:1>yield return M2();</N:1>
End();
}
}");
var source1 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static IEnumerable<int> F()
{
<N:0>yield return M1();</N:0>
<N:2>yield return M3();</N:2>
<N:3>yield return M4();</N:3>
<N:1>yield return M2();</N:1>
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__5"" />
<encStateMachineStateMap>
<state number=""1"" offset=""16"" />
<state number=""2"" offset=""55"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
");
v0.VerifyPdb("C+<F>d__5.MoveNext", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C+<F>d__5"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""M1"" />
<encLocalSlotMap>
<slot kind=""27"" offset=""0"" />
</encLocalSlotMap>
</customDebugInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeSequencePoints);
v0.VerifyIL("C.<F>d__5.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 105 (0x69)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__5.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: switch (
IL_001b,
IL_001d,
IL_001f)
IL_0019: br.s IL_0021
IL_001b: br.s IL_0023
IL_001d: br.s IL_003f
IL_001f: br.s IL_005a
IL_0021: ldc.i4.0
IL_0022: ret
IL_0023: ldarg.0
IL_0024: ldc.i4.m1
IL_0025: stfld ""int C.<F>d__5.<>1__state""
IL_002a: nop
IL_002b: ldarg.0
IL_002c: call ""int C.M1()""
IL_0031: stfld ""int C.<F>d__5.<>2__current""
IL_0036: ldarg.0
IL_0037: ldc.i4.1
IL_0038: stfld ""int C.<F>d__5.<>1__state""
IL_003d: ldc.i4.1
IL_003e: ret
IL_003f: ldarg.0
IL_0040: ldc.i4.m1
IL_0041: stfld ""int C.<F>d__5.<>1__state""
IL_0046: ldarg.0
IL_0047: call ""int C.M2()""
IL_004c: stfld ""int C.<F>d__5.<>2__current""
IL_0051: ldarg.0
IL_0052: ldc.i4.2
IL_0053: stfld ""int C.<F>d__5.<>1__state""
IL_0058: ldc.i4.1
IL_0059: ret
IL_005a: ldarg.0
IL_005b: ldc.i4.m1
IL_005c: stfld ""int C.<F>d__5.<>1__state""
IL_0061: call ""void C.End()""
IL_0066: nop
IL_0067: ldc.i4.0
IL_0068: ret
}");
diff1.VerifyIL("C.<F>d__5.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 171 (0xab)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__5.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: switch (
IL_0023,
IL_0025,
IL_0027,
IL_0029,
IL_002b)
IL_0021: br.s IL_002d
IL_0023: br.s IL_002f
IL_0025: br.s IL_004b
IL_0027: br.s IL_009c
IL_0029: br.s IL_0066
IL_002b: br.s IL_0081
IL_002d: ldc.i4.0
IL_002e: ret
IL_002f: ldarg.0
IL_0030: ldc.i4.m1
IL_0031: stfld ""int C.<F>d__5.<>1__state""
IL_0036: nop
IL_0037: ldarg.0
IL_0038: call ""int C.M1()""
IL_003d: stfld ""int C.<F>d__5.<>2__current""
IL_0042: ldarg.0
IL_0043: ldc.i4.1
IL_0044: stfld ""int C.<F>d__5.<>1__state""
IL_0049: ldc.i4.1
IL_004a: ret
IL_004b: ldarg.0
IL_004c: ldc.i4.m1
IL_004d: stfld ""int C.<F>d__5.<>1__state""
IL_0052: ldarg.0
IL_0053: call ""int C.M3()""
IL_0058: stfld ""int C.<F>d__5.<>2__current""
IL_005d: ldarg.0
IL_005e: ldc.i4.3
IL_005f: stfld ""int C.<F>d__5.<>1__state""
IL_0064: ldc.i4.1
IL_0065: ret
IL_0066: ldarg.0
IL_0067: ldc.i4.m1
IL_0068: stfld ""int C.<F>d__5.<>1__state""
IL_006d: ldarg.0
IL_006e: call ""int C.M4()""
IL_0073: stfld ""int C.<F>d__5.<>2__current""
IL_0078: ldarg.0
IL_0079: ldc.i4.4
IL_007a: stfld ""int C.<F>d__5.<>1__state""
IL_007f: ldc.i4.1
IL_0080: ret
IL_0081: ldarg.0
IL_0082: ldc.i4.m1
IL_0083: stfld ""int C.<F>d__5.<>1__state""
IL_0088: ldarg.0
IL_0089: call ""int C.M2()""
IL_008e: stfld ""int C.<F>d__5.<>2__current""
IL_0093: ldarg.0
IL_0094: ldc.i4.2
IL_0095: stfld ""int C.<F>d__5.<>1__state""
IL_009a: ldc.i4.1
IL_009b: ret
IL_009c: ldarg.0
IL_009d: ldc.i4.m1
IL_009e: stfld ""int C.<F>d__5.<>1__state""
IL_00a3: call ""void C.End()""
IL_00a8: nop
IL_00a9: ldc.i4.0
IL_00aa: ret
}
");
}
[Fact]
public void UpdateIterator_YieldReturn_Remove()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static IEnumerable<int> F()
{
<N:0>yield return M1();</N:0>
<N:1>yield return M2();</N:1>
<N:2>yield return M3();</N:2>
<N:3>yield return M4();</N:3>
End();
}
}");
var source1 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static IEnumerable<int> F()
{
<N:1>yield return M2();</N:1>
<N:2>yield return M3();</N:2>
End();
}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifyIL("C.<F>d__5.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 124 (0x7c)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__5.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: switch (
IL_001f,
IL_0025,
IL_0021,
IL_0023)
IL_001d: br.s IL_0025
IL_001f: br.s IL_0036
IL_0021: br.s IL_0052
IL_0023: br.s IL_006d
IL_0025: ldloc.0
IL_0026: ldc.i4.1
IL_0027: blt.s IL_0034
IL_0029: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedIteratorMethod + @"""
IL_002e: newobj ""System.InvalidOperationException..ctor(string)""
IL_0033: throw
IL_0034: ldc.i4.0
IL_0035: ret
IL_0036: ldarg.0
IL_0037: ldc.i4.m1
IL_0038: stfld ""int C.<F>d__5.<>1__state""
IL_003d: nop
IL_003e: ldarg.0
IL_003f: call ""int C.M2()""
IL_0044: stfld ""int C.<F>d__5.<>2__current""
IL_0049: ldarg.0
IL_004a: ldc.i4.2
IL_004b: stfld ""int C.<F>d__5.<>1__state""
IL_0050: ldc.i4.1
IL_0051: ret
IL_0052: ldarg.0
IL_0053: ldc.i4.m1
IL_0054: stfld ""int C.<F>d__5.<>1__state""
IL_0059: ldarg.0
IL_005a: call ""int C.M3()""
IL_005f: stfld ""int C.<F>d__5.<>2__current""
IL_0064: ldarg.0
IL_0065: ldc.i4.3
IL_0066: stfld ""int C.<F>d__5.<>1__state""
IL_006b: ldc.i4.1
IL_006c: ret
IL_006d: ldarg.0
IL_006e: ldc.i4.m1
IL_006f: stfld ""int C.<F>d__5.<>1__state""
IL_0074: call ""void C.End()""
IL_0079: nop
IL_007a: ldc.i4.0
IL_007b: ret
}
");
}
[Fact]
public void UpdateIterator_YieldReturn_Add_Finally_Try()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
<N:0>yield return M1();</N:0>
<N:3>try</N:3>
{
<N:1>yield return M2();</N:1>
}
finally
{
Finally1(0);
}
<N:2>yield return M3();</N:2>
End();
}
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static void Finally1(int gen) {}
static void Finally2(int gen) {}
static void Finally3(int gen) {}
}");
var source1 = MarkedSource(@"
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
try
{
<N:0>yield return M1();</N:0>
}
finally
{
Finally2(1);
}
<N:3>try</N:3>
{
<N:1>yield return M2();</N:1>
try
{
<N:4>yield return M4();</N:4>
}
finally
{
Finally3(1);
}
}
finally
{
Finally1(1);
}
<N:2>yield return M3();</N:2>
End();
}
static int M1() => 1;
static int M2() => 2;
static int M3() => 3;
static int M4() => 4;
static void End() {}
static void Finally1(int gen) {}
static void Finally2(int gen) {}
static void Finally3(int gen) {}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encStateMachineStateMap>
<state number=""1"" offset=""16"" />
<state number=""-3"" offset=""57"" />
<state number=""2"" offset=""96"" />
<state number=""3"" offset=""213"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {" + string.Join(", ", new[]
{
"<>1__state",
"<>2__current",
"<>l__initialThreadId",
"System.IDisposable.Dispose",
"MoveNext",
"<>m__Finally2",
"<>m__Finally1",
"<>m__Finally3",
"System.Collections.Generic.IEnumerator<System.Int32>.get_Current",
"System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current",
"System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator",
"System.Collections.IEnumerable.GetEnumerator",
"System.Collections.Generic.IEnumerator<System.Int32>.Current",
"System.Collections.IEnumerator.Current"
}) + "}");
diff1.VerifyIL("C.<F>d__0.<>m__Finally1", @"
{
// Code size 17 (0x11)
.maxstack 2
IL_0000: ldarg.0
IL_0001: ldc.i4.m1
IL_0002: stfld ""int C.<F>d__0.<>1__state""
IL_0007: nop
IL_0008: ldc.i4.1
IL_0009: call ""void C.Finally1(int)""
IL_000e: nop
IL_000f: nop
IL_0010: ret
}
");
diff1.VerifyIL("C.<F>d__0.<>m__Finally2", @"
{
// Code size 17 (0x11)
.maxstack 2
IL_0000: ldarg.0
IL_0001: ldc.i4.m1
IL_0002: stfld ""int C.<F>d__0.<>1__state""
IL_0007: nop
IL_0008: ldc.i4.1
IL_0009: call ""void C.Finally2(int)""
IL_000e: nop
IL_000f: nop
IL_0010: ret
}
");
diff1.VerifyIL("C.<F>d__0.<>m__Finally3", @"
{
// Code size 18 (0x12)
.maxstack 2
IL_0000: ldarg.0
IL_0001: ldc.i4.s -3
IL_0003: stfld ""int C.<F>d__0.<>1__state""
IL_0008: nop
IL_0009: ldc.i4.1
IL_000a: call ""void C.Finally3(int)""
IL_000f: nop
IL_0010: nop
IL_0011: ret
}
");
v0.VerifyIL("C.<F>d__0.System.IDisposable.Dispose", @"
{
// Code size 33 (0x21)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: ldc.i4.s -3
IL_000a: beq.s IL_0014
IL_000c: br.s IL_000e
IL_000e: ldloc.0
IL_000f: ldc.i4.2
IL_0010: beq.s IL_0014
IL_0012: br.s IL_0020
IL_0014: nop
.try
{
IL_0015: leave.s IL_001e
}
finally
{
IL_0017: ldarg.0
IL_0018: call ""void C.<F>d__0.<>m__Finally1()""
IL_001d: endfinally
}
IL_001e: br.s IL_0020
IL_0020: ret
}
");
diff1.VerifyIL("C.<F>d__0.System.IDisposable.Dispose", @"
{
// Code size 108 (0x6c)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: ldc.i4.s -5
IL_000a: sub
IL_000b: switch (
IL_0046,
IL_003a,
IL_0046,
IL_006b,
IL_006b,
IL_006b,
IL_003a,
IL_0046,
IL_006b,
IL_0046)
IL_0038: br.s IL_006b
IL_003a: nop
.try
{
IL_003b: leave.s IL_0044
}
finally
{
IL_003d: ldarg.0
IL_003e: call ""void C.<F>d__0.<>m__Finally2()""
IL_0043: endfinally
}
IL_0044: br.s IL_006b
IL_0046: nop
.try
{
IL_0047: ldloc.0
IL_0048: ldc.i4.s -5
IL_004a: beq.s IL_0054
IL_004c: br.s IL_004e
IL_004e: ldloc.0
IL_004f: ldc.i4.4
IL_0050: beq.s IL_0054
IL_0052: br.s IL_0060
IL_0054: nop
.try
{
IL_0055: leave.s IL_005e
}
finally
{
IL_0057: ldarg.0
IL_0058: call ""void C.<F>d__0.<>m__Finally3()""
IL_005d: endfinally
}
IL_005e: br.s IL_0060
IL_0060: leave.s IL_0069
}
finally
{
IL_0062: ldarg.0
IL_0063: call ""void C.<F>d__0.<>m__Finally1()""
IL_0068: endfinally
}
IL_0069: br.s IL_006b
IL_006b: ret
}
");
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 179 (0xb3)
.maxstack 2
.locals init (bool V_0,
int V_1)
.try
{
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.1
IL_0007: ldloc.1
IL_0008: switch (
IL_001f,
IL_0021,
IL_0023,
IL_0025)
IL_001d: br.s IL_0027
IL_001f: br.s IL_002e
IL_0021: br.s IL_004c
IL_0023: br.s IL_0072
IL_0025: br.s IL_0098
IL_0027: ldc.i4.0
IL_0028: stloc.0
IL_0029: leave IL_00b1
IL_002e: ldarg.0
IL_002f: ldc.i4.m1
IL_0030: stfld ""int C.<F>d__0.<>1__state""
IL_0035: nop
IL_0036: ldarg.0
IL_0037: call ""int C.M1()""
IL_003c: stfld ""int C.<F>d__0.<>2__current""
IL_0041: ldarg.0
IL_0042: ldc.i4.1
IL_0043: stfld ""int C.<F>d__0.<>1__state""
IL_0048: ldc.i4.1
IL_0049: stloc.0
IL_004a: leave.s IL_00b1
IL_004c: ldarg.0
IL_004d: ldc.i4.m1
IL_004e: stfld ""int C.<F>d__0.<>1__state""
IL_0053: ldarg.0
IL_0054: ldc.i4.s -3
IL_0056: stfld ""int C.<F>d__0.<>1__state""
IL_005b: nop
IL_005c: ldarg.0
IL_005d: call ""int C.M2()""
IL_0062: stfld ""int C.<F>d__0.<>2__current""
IL_0067: ldarg.0
IL_0068: ldc.i4.2
IL_0069: stfld ""int C.<F>d__0.<>1__state""
IL_006e: ldc.i4.1
IL_006f: stloc.0
IL_0070: leave.s IL_00b1
IL_0072: ldarg.0
IL_0073: ldc.i4.s -3
IL_0075: stfld ""int C.<F>d__0.<>1__state""
IL_007a: nop
IL_007b: ldarg.0
IL_007c: call ""void C.<F>d__0.<>m__Finally1()""
IL_0081: nop
IL_0082: ldarg.0
IL_0083: call ""int C.M3()""
IL_0088: stfld ""int C.<F>d__0.<>2__current""
IL_008d: ldarg.0
IL_008e: ldc.i4.3
IL_008f: stfld ""int C.<F>d__0.<>1__state""
IL_0094: ldc.i4.1
IL_0095: stloc.0
IL_0096: leave.s IL_00b1
IL_0098: ldarg.0
IL_0099: ldc.i4.m1
IL_009a: stfld ""int C.<F>d__0.<>1__state""
IL_009f: call ""void C.End()""
IL_00a4: nop
IL_00a5: ldc.i4.0
IL_00a6: stloc.0
IL_00a7: leave.s IL_00b1
}
fault
{
IL_00a9: ldarg.0
IL_00aa: call ""void C.<F>d__0.Dispose()""
IL_00af: nop
IL_00b0: endfinally
}
IL_00b1: ldloc.0
IL_00b2: ret
}
");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 259 (0x103)
.maxstack 2
.locals init (bool V_0,
int V_1)
.try
{
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.1
IL_0007: ldloc.1
IL_0008: switch (
IL_0023,
IL_0025,
IL_0027,
IL_0029,
IL_002e)
IL_0021: br.s IL_0033
IL_0023: br.s IL_003a
IL_0025: br.s IL_0064
IL_0027: br.s IL_0093
IL_0029: br IL_00e8
IL_002e: br IL_00ba
IL_0033: ldc.i4.0
IL_0034: stloc.0
IL_0035: leave IL_0101
IL_003a: ldarg.0
IL_003b: ldc.i4.m1
IL_003c: stfld ""int C.<F>d__0.<>1__state""
IL_0041: nop
IL_0042: ldarg.0
IL_0043: ldc.i4.s -4
IL_0045: stfld ""int C.<F>d__0.<>1__state""
IL_004a: nop
IL_004b: ldarg.0
IL_004c: call ""int C.M1()""
IL_0051: stfld ""int C.<F>d__0.<>2__current""
IL_0056: ldarg.0
IL_0057: ldc.i4.1
IL_0058: stfld ""int C.<F>d__0.<>1__state""
IL_005d: ldc.i4.1
IL_005e: stloc.0
IL_005f: leave IL_0101
IL_0064: ldarg.0
IL_0065: ldc.i4.s -4
IL_0067: stfld ""int C.<F>d__0.<>1__state""
IL_006c: nop
IL_006d: ldarg.0
IL_006e: call ""void C.<F>d__0.<>m__Finally2()""
IL_0073: nop
IL_0074: ldarg.0
IL_0075: ldc.i4.s -3
IL_0077: stfld ""int C.<F>d__0.<>1__state""
IL_007c: nop
IL_007d: ldarg.0
IL_007e: call ""int C.M2()""
IL_0083: stfld ""int C.<F>d__0.<>2__current""
IL_0088: ldarg.0
IL_0089: ldc.i4.2
IL_008a: stfld ""int C.<F>d__0.<>1__state""
IL_008f: ldc.i4.1
IL_0090: stloc.0
IL_0091: leave.s IL_0101
IL_0093: ldarg.0
IL_0094: ldc.i4.s -3
IL_0096: stfld ""int C.<F>d__0.<>1__state""
IL_009b: ldarg.0
IL_009c: ldc.i4.s -5
IL_009e: stfld ""int C.<F>d__0.<>1__state""
IL_00a3: nop
IL_00a4: ldarg.0
IL_00a5: call ""int C.M4()""
IL_00aa: stfld ""int C.<F>d__0.<>2__current""
IL_00af: ldarg.0
IL_00b0: ldc.i4.4
IL_00b1: stfld ""int C.<F>d__0.<>1__state""
IL_00b6: ldc.i4.1
IL_00b7: stloc.0
IL_00b8: leave.s IL_0101
IL_00ba: ldarg.0
IL_00bb: ldc.i4.s -5
IL_00bd: stfld ""int C.<F>d__0.<>1__state""
IL_00c2: nop
IL_00c3: ldarg.0
IL_00c4: call ""void C.<F>d__0.<>m__Finally3()""
IL_00c9: nop
IL_00ca: nop
IL_00cb: ldarg.0
IL_00cc: call ""void C.<F>d__0.<>m__Finally1()""
IL_00d1: nop
IL_00d2: ldarg.0
IL_00d3: call ""int C.M3()""
IL_00d8: stfld ""int C.<F>d__0.<>2__current""
IL_00dd: ldarg.0
IL_00de: ldc.i4.3
IL_00df: stfld ""int C.<F>d__0.<>1__state""
IL_00e4: ldc.i4.1
IL_00e5: stloc.0
IL_00e6: leave.s IL_0101
IL_00e8: ldarg.0
IL_00e9: ldc.i4.m1
IL_00ea: stfld ""int C.<F>d__0.<>1__state""
IL_00ef: call ""void C.End()""
IL_00f4: nop
IL_00f5: ldc.i4.0
IL_00f6: stloc.0
IL_00f7: leave.s IL_0101
}
fault
{
IL_00f9: ldarg.0
IL_00fa: call ""void C.<F>d__0.Dispose()""
IL_00ff: nop
IL_0100: endfinally
}
IL_0101: ldloc.0
IL_0102: ret
}");
}
[Fact]
public void UpdateIterator_YieldReturn_Add_Finally_UsingDeclaration()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
using var <N:0>x = M1()</N:0>;
<N:1>yield return M2();</N:1>
End();
}
static IDisposable M1() => null;
static int M2() => 0;
static int M3() => 0;
static void End() {}
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
using var <N:0>x = M1()</N:0>;
<N:1>yield return M2();</N:1>
yield return M3();
End();
}
static IDisposable M1() => null;
static int M2() => 0;
static int M3() => 0;
static void End() {}
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encLocalSlotMap>
<slot kind=""0"" offset=""26"" />
</encLocalSlotMap>
<encStateMachineStateMap>
<state number=""-3"" offset=""26"" />
<state number=""1"" offset=""56"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {" + string.Join(", ", new[]
{
"<>1__state",
"<>2__current",
"<>l__initialThreadId",
"<x>5__1",
"System.IDisposable.Dispose",
"MoveNext",
"<>m__Finally1",
"System.Collections.Generic.IEnumerator<System.Int32>.get_Current",
"System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current",
"System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator",
"System.Collections.IEnumerable.GetEnumerator",
"System.Collections.Generic.IEnumerator<System.Int32>.Current",
"System.Collections.IEnumerator.Current"
}) + "}");
diff1.VerifyIL("C.<F>d__0.<>m__Finally1", @"
{
// Code size 28 (0x1c)
.maxstack 2
IL_0000: ldarg.0
IL_0001: ldc.i4.m1
IL_0002: stfld ""int C.<F>d__0.<>1__state""
IL_0007: ldarg.0
IL_0008: ldfld ""System.IDisposable C.<F>d__0.<x>5__1""
IL_000d: brfalse.s IL_001b
IL_000f: ldarg.0
IL_0010: ldfld ""System.IDisposable C.<F>d__0.<x>5__1""
IL_0015: callvirt ""void System.IDisposable.Dispose()""
IL_001a: nop
IL_001b: ret
}
");
v0.VerifyIL("C.<F>d__0.System.IDisposable.Dispose", @"
{
// Code size 33 (0x21)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: ldc.i4.s -3
IL_000a: beq.s IL_0014
IL_000c: br.s IL_000e
IL_000e: ldloc.0
IL_000f: ldc.i4.1
IL_0010: beq.s IL_0014
IL_0012: br.s IL_0020
IL_0014: nop
.try
{
IL_0015: leave.s IL_001e
}
finally
{
IL_0017: ldarg.0
IL_0018: call ""void C.<F>d__0.<>m__Finally1()""
IL_001d: endfinally
}
IL_001e: br.s IL_0020
IL_0020: ret
}
");
diff1.VerifyIL("C.<F>d__0.System.IDisposable.Dispose", @"
{
// Code size 35 (0x23)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: ldc.i4.s -3
IL_000a: beq.s IL_0016
IL_000c: br.s IL_000e
IL_000e: ldloc.0
IL_000f: ldc.i4.1
IL_0010: sub
IL_0011: ldc.i4.1
IL_0012: ble.un.s IL_0016
IL_0014: br.s IL_0022
IL_0016: nop
.try
{
IL_0017: leave.s IL_0020
}
finally
{
IL_0019: ldarg.0
IL_001a: call ""void C.<F>d__0.<>m__Finally1()""
IL_001f: endfinally
}
IL_0020: br.s IL_0022
IL_0022: ret
}
");
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 112 (0x70)
.maxstack 2
.locals init (bool V_0,
int V_1)
.try
{
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.1
IL_0007: ldloc.1
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.1
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_001a
IL_0014: br.s IL_004b
IL_0016: ldc.i4.0
IL_0017: stloc.0
IL_0018: leave.s IL_006e
IL_001a: ldarg.0
IL_001b: ldc.i4.m1
IL_001c: stfld ""int C.<F>d__0.<>1__state""
IL_0021: nop
IL_0022: ldarg.0
IL_0023: call ""System.IDisposable C.M1()""
IL_0028: stfld ""System.IDisposable C.<F>d__0.<x>5__1""
IL_002d: ldarg.0
IL_002e: ldc.i4.s -3
IL_0030: stfld ""int C.<F>d__0.<>1__state""
IL_0035: ldarg.0
IL_0036: call ""int C.M2()""
IL_003b: stfld ""int C.<F>d__0.<>2__current""
IL_0040: ldarg.0
IL_0041: ldc.i4.1
IL_0042: stfld ""int C.<F>d__0.<>1__state""
IL_0047: ldc.i4.1
IL_0048: stloc.0
IL_0049: leave.s IL_006e
IL_004b: ldarg.0
IL_004c: ldc.i4.s -3
IL_004e: stfld ""int C.<F>d__0.<>1__state""
IL_0053: call ""void C.End()""
IL_0058: nop
IL_0059: ldc.i4.0
IL_005a: stloc.0
IL_005b: br.s IL_005d
IL_005d: ldarg.0
IL_005e: call ""void C.<F>d__0.<>m__Finally1()""
IL_0063: nop
IL_0064: leave.s IL_006e
}
fault
{
IL_0066: ldarg.0
IL_0067: call ""void C.<F>d__0.Dispose()""
IL_006c: nop
IL_006d: endfinally
}
IL_006e: ldloc.0
IL_006f: ret
}
");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 153 (0x99)
.maxstack 2
.locals init (bool V_0,
int V_1)
.try
{
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.1
IL_0007: ldloc.1
IL_0008: switch (
IL_001b,
IL_001d,
IL_001f)
IL_0019: br.s IL_0021
IL_001b: br.s IL_0025
IL_001d: br.s IL_0056
IL_001f: br.s IL_0074
IL_0021: ldc.i4.0
IL_0022: stloc.0
IL_0023: leave.s IL_0097
IL_0025: ldarg.0
IL_0026: ldc.i4.m1
IL_0027: stfld ""int C.<F>d__0.<>1__state""
IL_002c: nop
IL_002d: ldarg.0
IL_002e: call ""System.IDisposable C.M1()""
IL_0033: stfld ""System.IDisposable C.<F>d__0.<x>5__1""
IL_0038: ldarg.0
IL_0039: ldc.i4.s -3
IL_003b: stfld ""int C.<F>d__0.<>1__state""
IL_0040: ldarg.0
IL_0041: call ""int C.M2()""
IL_0046: stfld ""int C.<F>d__0.<>2__current""
IL_004b: ldarg.0
IL_004c: ldc.i4.1
IL_004d: stfld ""int C.<F>d__0.<>1__state""
IL_0052: ldc.i4.1
IL_0053: stloc.0
IL_0054: leave.s IL_0097
IL_0056: ldarg.0
IL_0057: ldc.i4.s -3
IL_0059: stfld ""int C.<F>d__0.<>1__state""
IL_005e: ldarg.0
IL_005f: call ""int C.M3()""
IL_0064: stfld ""int C.<F>d__0.<>2__current""
IL_0069: ldarg.0
IL_006a: ldc.i4.2
IL_006b: stfld ""int C.<F>d__0.<>1__state""
IL_0070: ldc.i4.1
IL_0071: stloc.0
IL_0072: leave.s IL_0097
IL_0074: ldarg.0
IL_0075: ldc.i4.s -3
IL_0077: stfld ""int C.<F>d__0.<>1__state""
IL_007c: call ""void C.End()""
IL_0081: nop
IL_0082: ldc.i4.0
IL_0083: stloc.0
IL_0084: br.s IL_0086
IL_0086: ldarg.0
IL_0087: call ""void C.<F>d__0.<>m__Finally1()""
IL_008c: nop
IL_008d: leave.s IL_0097
}
fault
{
IL_008f: ldarg.0
IL_0090: call ""void C.<F>d__0.Dispose()""
IL_0095: nop
IL_0096: endfinally
}
IL_0097: ldloc.0
IL_0098: ret
}");
}
[Fact]
public void UpdateIterator_YieldReturn_Add_Finally_Foreach_ForEachVar_Using_Lock()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
using IDisposable <N:0>x1 = D()</N:0>, <N:1>x2 = D()</N:1>;
<N:2>using (D())</N:2>
using (IDisposable <N:3>y1 = D()</N:3>, <N:4>y2 = D()</N:4>)
<N:5>foreach</N:5> (var z in E())
<N:6>foreach</N:6> (var (u, w) in E())
<N:7>lock</N:7> (D())
{
<N:8>yield return 1;</N:8>
}
}
static IDisposable D() => null;
static IEnumerable<(int, int)> E() => null;
}");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
static IEnumerable<int> F()
{
using IDisposable <N:0>x1 = D()</N:0>, <N:1>x2 = D()</N:1>;
<N:2>using (D())</N:2>
using (IDisposable <N:3>y1 = D()</N:3>, <N:4>y2 = D()</N:4>)
<N:5>foreach</N:5> (var z in E())
<N:6>foreach</N:6> (var (u, w) in E())
<N:7>lock</N:7> (D())
{
<N:8>yield return 1;</N:8>
yield return 2;
}
}
static IDisposable D() => null;
static IEnumerable<(int, int)> E() => null;
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemRuntimeFacadeRef, ValueTupleRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encLocalSlotMap>
<slot kind=""0"" offset=""34"" />
<slot kind=""0"" offset=""55"" />
<slot kind=""4"" offset=""87"" />
<slot kind=""0"" offset=""142"" />
<slot kind=""0"" offset=""163"" />
<slot kind=""5"" offset=""201"" />
<slot kind=""0"" offset=""201"" />
<slot kind=""5"" offset=""256"" />
<slot kind=""0"" offset=""276"" />
<slot kind=""0"" offset=""279"" />
<slot kind=""3"" offset=""320"" />
<slot kind=""2"" offset=""320"" />
</encLocalSlotMap>
<encStateMachineStateMap>
<state number=""-3"" offset=""34"" />
<state number=""-4"" offset=""55"" />
<state number=""-5"" offset=""87"" />
<state number=""-6"" offset=""142"" />
<state number=""-7"" offset=""163"" />
<state number=""-8"" offset=""201"" />
<state number=""-9"" offset=""256"" />
<state number=""-10"" offset=""320"" />
<state number=""1"" offset=""398"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext", @"
{
// Code size 526 (0x20e)
.maxstack 2
.locals init (bool V_0,
int V_1,
System.ValueTuple<int, int> V_2)
.try
{
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.1
IL_0007: ldloc.1
IL_0008: switch (
IL_001b,
IL_001d,
IL_0022)
IL_0019: br.s IL_0027
IL_001b: br.s IL_002e
IL_001d: br IL_0148
IL_0022: br IL_0165
IL_0027: ldc.i4.0
IL_0028: stloc.0
IL_0029: leave IL_020c
IL_002e: ldarg.0
IL_002f: ldc.i4.m1
IL_0030: stfld ""int C.<F>d__0.<>1__state""
IL_0035: nop
IL_0036: ldarg.0
IL_0037: call ""System.IDisposable C.D()""
IL_003c: stfld ""System.IDisposable C.<F>d__0.<x1>5__1""
IL_0041: ldarg.0
IL_0042: ldc.i4.s -3
IL_0044: stfld ""int C.<F>d__0.<>1__state""
IL_0049: ldarg.0
IL_004a: call ""System.IDisposable C.D()""
IL_004f: stfld ""System.IDisposable C.<F>d__0.<x2>5__2""
IL_0054: ldarg.0
IL_0055: ldc.i4.s -4
IL_0057: stfld ""int C.<F>d__0.<>1__state""
IL_005c: ldarg.0
IL_005d: call ""System.IDisposable C.D()""
IL_0062: stfld ""System.IDisposable C.<F>d__0.<>s__3""
IL_0067: ldarg.0
IL_0068: ldc.i4.s -5
IL_006a: stfld ""int C.<F>d__0.<>1__state""
IL_006f: ldarg.0
IL_0070: call ""System.IDisposable C.D()""
IL_0075: stfld ""System.IDisposable C.<F>d__0.<y1>5__4""
IL_007a: ldarg.0
IL_007b: ldc.i4.s -6
IL_007d: stfld ""int C.<F>d__0.<>1__state""
IL_0082: ldarg.0
IL_0083: call ""System.IDisposable C.D()""
IL_0088: stfld ""System.IDisposable C.<F>d__0.<y2>5__5""
IL_008d: ldarg.0
IL_008e: ldc.i4.s -7
IL_0090: stfld ""int C.<F>d__0.<>1__state""
IL_0095: nop
IL_0096: ldarg.0
IL_0097: call ""System.Collections.Generic.IEnumerable<System.ValueTuple<int, int>> C.E()""
IL_009c: callvirt ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> System.Collections.Generic.IEnumerable<System.ValueTuple<int, int>>.GetEnumerator()""
IL_00a1: stfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__6""
IL_00a6: ldarg.0
IL_00a7: ldc.i4.s -8
IL_00a9: stfld ""int C.<F>d__0.<>1__state""
IL_00ae: br IL_01a6
IL_00b3: ldarg.0
IL_00b4: ldarg.0
IL_00b5: ldfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__6""
IL_00ba: callvirt ""System.ValueTuple<int, int> System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>>.Current.get""
IL_00bf: stfld ""System.ValueTuple<int, int> C.<F>d__0.<z>5__7""
IL_00c4: nop
IL_00c5: ldarg.0
IL_00c6: call ""System.Collections.Generic.IEnumerable<System.ValueTuple<int, int>> C.E()""
IL_00cb: callvirt ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> System.Collections.Generic.IEnumerable<System.ValueTuple<int, int>>.GetEnumerator()""
IL_00d0: stfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__8""
IL_00d5: ldarg.0
IL_00d6: ldc.i4.s -9
IL_00d8: stfld ""int C.<F>d__0.<>1__state""
IL_00dd: br IL_017c
IL_00e2: ldarg.0
IL_00e3: ldfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__8""
IL_00e8: callvirt ""System.ValueTuple<int, int> System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>>.Current.get""
IL_00ed: stloc.2
IL_00ee: ldarg.0
IL_00ef: ldloc.2
IL_00f0: ldfld ""int System.ValueTuple<int, int>.Item1""
IL_00f5: stfld ""int C.<F>d__0.<u>5__13""
IL_00fa: ldarg.0
IL_00fb: ldloc.2
IL_00fc: ldfld ""int System.ValueTuple<int, int>.Item2""
IL_0101: stfld ""int C.<F>d__0.<w>5__14""
IL_0106: ldarg.0
IL_0107: call ""System.IDisposable C.D()""
IL_010c: stfld ""System.IDisposable C.<F>d__0.<>s__11""
IL_0111: ldarg.0
IL_0112: ldc.i4.0
IL_0113: stfld ""bool C.<F>d__0.<>s__12""
IL_0118: ldarg.0
IL_0119: ldc.i4.s -10
IL_011b: stfld ""int C.<F>d__0.<>1__state""
IL_0120: ldarg.0
IL_0121: ldfld ""System.IDisposable C.<F>d__0.<>s__11""
IL_0126: ldarg.0
IL_0127: ldflda ""bool C.<F>d__0.<>s__12""
IL_012c: call ""void System.Threading.Monitor.Enter(object, ref bool)""
IL_0131: nop
IL_0132: nop
IL_0133: ldarg.0
IL_0134: ldc.i4.1
IL_0135: stfld ""int C.<F>d__0.<>2__current""
IL_013a: ldarg.0
IL_013b: ldc.i4.1
IL_013c: stfld ""int C.<F>d__0.<>1__state""
IL_0141: ldc.i4.1
IL_0142: stloc.0
IL_0143: leave IL_020c
IL_0148: ldarg.0
IL_0149: ldc.i4.s -10
IL_014b: stfld ""int C.<F>d__0.<>1__state""
IL_0150: ldarg.0
IL_0151: ldc.i4.2
IL_0152: stfld ""int C.<F>d__0.<>2__current""
IL_0157: ldarg.0
IL_0158: ldc.i4.2
IL_0159: stfld ""int C.<F>d__0.<>1__state""
IL_015e: ldc.i4.1
IL_015f: stloc.0
IL_0160: leave IL_020c
IL_0165: ldarg.0
IL_0166: ldc.i4.s -10
IL_0168: stfld ""int C.<F>d__0.<>1__state""
IL_016d: nop
IL_016e: ldarg.0
IL_016f: call ""void C.<F>d__0.<>m__Finally8()""
IL_0174: nop
IL_0175: ldarg.0
IL_0176: ldnull
IL_0177: stfld ""System.IDisposable C.<F>d__0.<>s__11""
IL_017c: ldarg.0
IL_017d: ldfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__8""
IL_0182: callvirt ""bool System.Collections.IEnumerator.MoveNext()""
IL_0187: brtrue IL_00e2
IL_018c: ldarg.0
IL_018d: call ""void C.<F>d__0.<>m__Finally7()""
IL_0192: nop
IL_0193: ldarg.0
IL_0194: ldnull
IL_0195: stfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__8""
IL_019a: ldarg.0
IL_019b: ldflda ""System.ValueTuple<int, int> C.<F>d__0.<z>5__7""
IL_01a0: initobj ""System.ValueTuple<int, int>""
IL_01a6: ldarg.0
IL_01a7: ldfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__6""
IL_01ac: callvirt ""bool System.Collections.IEnumerator.MoveNext()""
IL_01b1: brtrue IL_00b3
IL_01b6: ldarg.0
IL_01b7: call ""void C.<F>d__0.<>m__Finally6()""
IL_01bc: nop
IL_01bd: ldarg.0
IL_01be: ldnull
IL_01bf: stfld ""System.Collections.Generic.IEnumerator<System.ValueTuple<int, int>> C.<F>d__0.<>s__6""
IL_01c4: ldarg.0
IL_01c5: call ""void C.<F>d__0.<>m__Finally5()""
IL_01ca: nop
IL_01cb: ldarg.0
IL_01cc: call ""void C.<F>d__0.<>m__Finally4()""
IL_01d1: nop
IL_01d2: ldarg.0
IL_01d3: ldnull
IL_01d4: stfld ""System.IDisposable C.<F>d__0.<y1>5__4""
IL_01d9: ldarg.0
IL_01da: ldnull
IL_01db: stfld ""System.IDisposable C.<F>d__0.<y2>5__5""
IL_01e0: ldarg.0
IL_01e1: call ""void C.<F>d__0.<>m__Finally3()""
IL_01e6: nop
IL_01e7: ldarg.0
IL_01e8: ldnull
IL_01e9: stfld ""System.IDisposable C.<F>d__0.<>s__3""
IL_01ee: ldc.i4.0
IL_01ef: stloc.0
IL_01f0: br.s IL_01f2
IL_01f2: ldarg.0
IL_01f3: call ""void C.<F>d__0.<>m__Finally2()""
IL_01f8: nop
IL_01f9: br.s IL_01fb
IL_01fb: ldarg.0
IL_01fc: call ""void C.<F>d__0.<>m__Finally1()""
IL_0201: nop
IL_0202: leave.s IL_020c
}
fault
{
IL_0204: ldarg.0
IL_0205: call ""void C.<F>d__0.Dispose()""
IL_020a: nop
IL_020b: endfinally
}
IL_020c: ldloc.0
IL_020d: ret
}");
}
[Fact]
public void UpdateAsyncEnumerable_AwaitAndYield_AddAndRemove()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async IAsyncEnumerable<int> F()
{
<N:0>yield return F1();</N:0>
<N:1>await Task.FromResult(1)</N:1>;
End();
}
static int F1() => 1;
static int F2() => 1;
static void End() { }
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async IAsyncEnumerable<int> F()
{
<N:2>yield return F2();</N:2>
<N:3>await Task.FromResult(2)</N:3>;
<N:0>yield return F1();</N:0>
<N:1>await Task.FromResult(1)</N:1>;
End();
}
static int F1() => 1;
static int F2() => 1;
static void End() { }
}");
var source2 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async IAsyncEnumerable<int> F()
{
<N:2>yield return F2();</N:2>
<N:3>await Task.FromResult(2)</N:3>;
<N:1>await Task.FromResult(1)</N:1>;
End();
}
static int F1() => 1;
static int F2() => 1;
static void End() { }
}");
var source3 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async IAsyncEnumerable<int> F()
{
<N:2>yield return F2();</N:2>
<N:1>await Task.FromResult(1)</N:1>;
End();
}
static int F1() => 1;
static int F2() => 1;
static void End() { }
}");
var asyncStreamsTree = Parse(AsyncStreamsTypes, options: (CSharpParseOptions)source0.Tree.Options);
var compilation0 = CreateCompilationWithTasksExtensions(new[] { source0.Tree, asyncStreamsTree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(new[] { source1.Tree, asyncStreamsTree });
var compilation2 = compilation1.WithSource(new[] { source2.Tree, asyncStreamsTree });
var compilation3 = compilation2.WithSource(new[] { source3.Tree, asyncStreamsTree });
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var f3 = compilation3.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
var diff3 = compilation3.EmitDifference(
diff2.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f2, f3, GetSyntaxMapFromMarkers(source2, source3))));
v0.VerifyPdb("C.F", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encStateMachineStateMap>
<state number=""-4"" offset=""16"" />
<state number=""0"" offset=""55"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
");
diff1.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 484 (0x1e4)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter<int> V_1,
C.<F>d__0 V_2,
System.Runtime.CompilerServices.TaskAwaiter<int> V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.s -5
IL_000a: sub
IL_000b: switch (
IL_002e,
IL_0030,
IL_0035,
IL_0041,
IL_0041,
IL_0037,
IL_003c)
IL_002c: br.s IL_0041
IL_002e: br.s IL_0072
IL_0030: br IL_0102
IL_0035: br.s IL_0041
IL_0037: br IL_0154
IL_003c: br IL_00c4
IL_0041: ldarg.0
IL_0042: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0047: brfalse.s IL_004e
IL_0049: leave IL_01ad
IL_004e: ldarg.0
IL_004f: ldc.i4.m1
IL_0050: dup
IL_0051: stloc.0
IL_0052: stfld ""int C.<F>d__0.<>1__state""
IL_0057: nop
IL_0058: ldarg.0
IL_0059: call ""int C.F2()""
IL_005e: stfld ""int C.<F>d__0.<>2__current""
IL_0063: ldarg.0
IL_0064: ldc.i4.s -5
IL_0066: dup
IL_0067: stloc.0
IL_0068: stfld ""int C.<F>d__0.<>1__state""
IL_006d: leave IL_01d6
IL_0072: ldarg.0
IL_0073: ldc.i4.m1
IL_0074: dup
IL_0075: stloc.0
IL_0076: stfld ""int C.<F>d__0.<>1__state""
IL_007b: ldarg.0
IL_007c: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0081: brfalse.s IL_0088
IL_0083: leave IL_01ad
IL_0088: ldc.i4.2
IL_0089: call ""System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)""
IL_008e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_0093: stloc.1
IL_0094: ldloca.s V_1
IL_0096: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_009b: brtrue.s IL_00e0
IL_009d: ldarg.0
IL_009e: ldc.i4.1
IL_009f: dup
IL_00a0: stloc.0
IL_00a1: stfld ""int C.<F>d__0.<>1__state""
IL_00a6: ldarg.0
IL_00a7: ldloc.1
IL_00a8: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00ad: ldarg.0
IL_00ae: stloc.2
IL_00af: ldarg.0
IL_00b0: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_00b5: ldloca.s V_1
IL_00b7: ldloca.s V_2
IL_00b9: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)""
IL_00be: nop
IL_00bf: leave IL_01e3
IL_00c4: ldarg.0
IL_00c5: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00ca: stloc.1
IL_00cb: ldarg.0
IL_00cc: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00d1: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_00d7: ldarg.0
IL_00d8: ldc.i4.m1
IL_00d9: dup
IL_00da: stloc.0
IL_00db: stfld ""int C.<F>d__0.<>1__state""
IL_00e0: ldloca.s V_1
IL_00e2: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_00e7: pop
IL_00e8: ldarg.0
IL_00e9: call ""int C.F1()""
IL_00ee: stfld ""int C.<F>d__0.<>2__current""
IL_00f3: ldarg.0
IL_00f4: ldc.i4.s -4
IL_00f6: dup
IL_00f7: stloc.0
IL_00f8: stfld ""int C.<F>d__0.<>1__state""
IL_00fd: leave IL_01d6
IL_0102: ldarg.0
IL_0103: ldc.i4.m1
IL_0104: dup
IL_0105: stloc.0
IL_0106: stfld ""int C.<F>d__0.<>1__state""
IL_010b: ldarg.0
IL_010c: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0111: brfalse.s IL_0118
IL_0113: leave IL_01ad
IL_0118: ldc.i4.1
IL_0119: call ""System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)""
IL_011e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_0123: stloc.3
IL_0124: ldloca.s V_3
IL_0126: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_012b: brtrue.s IL_0170
IL_012d: ldarg.0
IL_012e: ldc.i4.0
IL_012f: dup
IL_0130: stloc.0
IL_0131: stfld ""int C.<F>d__0.<>1__state""
IL_0136: ldarg.0
IL_0137: ldloc.3
IL_0138: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_013d: ldarg.0
IL_013e: stloc.2
IL_013f: ldarg.0
IL_0140: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0145: ldloca.s V_3
IL_0147: ldloca.s V_2
IL_0149: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)""
IL_014e: nop
IL_014f: leave IL_01e3
IL_0154: ldarg.0
IL_0155: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_015a: stloc.3
IL_015b: ldarg.0
IL_015c: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_0161: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_0167: ldarg.0
IL_0168: ldc.i4.m1
IL_0169: dup
IL_016a: stloc.0
IL_016b: stfld ""int C.<F>d__0.<>1__state""
IL_0170: ldloca.s V_3
IL_0172: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_0177: pop
IL_0178: call ""void C.End()""
IL_017d: nop
IL_017e: leave.s IL_01ad
}
catch System.Exception
{
IL_0180: stloc.s V_4
IL_0182: ldarg.0
IL_0183: ldc.i4.s -2
IL_0185: stfld ""int C.<F>d__0.<>1__state""
IL_018a: ldarg.0
IL_018b: ldc.i4.0
IL_018c: stfld ""int C.<F>d__0.<>2__current""
IL_0191: ldarg.0
IL_0192: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0197: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_019c: nop
IL_019d: ldarg.0
IL_019e: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_01a3: ldloc.s V_4
IL_01a5: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetException(System.Exception)""
IL_01aa: nop
IL_01ab: leave.s IL_01e3
}
IL_01ad: ldarg.0
IL_01ae: ldc.i4.s -2
IL_01b0: stfld ""int C.<F>d__0.<>1__state""
IL_01b5: ldarg.0
IL_01b6: ldc.i4.0
IL_01b7: stfld ""int C.<F>d__0.<>2__current""
IL_01bc: ldarg.0
IL_01bd: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_01c2: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_01c7: nop
IL_01c8: ldarg.0
IL_01c9: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_01ce: ldc.i4.0
IL_01cf: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_01d4: nop
IL_01d5: ret
IL_01d6: ldarg.0
IL_01d7: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_01dc: ldc.i4.1
IL_01dd: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_01e2: nop
IL_01e3: ret
}
");
diff2.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 447 (0x1bf)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter<int> V_1,
C.<F>d__0 V_2,
System.Runtime.CompilerServices.TaskAwaiter<int> V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.s -5
IL_000a: sub
IL_000b: switch (
IL_002e,
IL_003c,
IL_0030,
IL_003c,
IL_003c,
IL_0032,
IL_0037)
IL_002c: br.s IL_003c
IL_002e: br.s IL_007d
IL_0030: br.s IL_004c
IL_0032: br IL_012f
IL_0037: br IL_00cf
IL_003c: ldloc.0
IL_003d: ldc.i4.s -4
IL_003f: bgt.s IL_004c
IL_0041: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedIteratorMethod + @"""
IL_0046: newobj ""System.InvalidOperationException..ctor(string)""
IL_004b: throw
IL_004c: ldarg.0
IL_004d: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0052: brfalse.s IL_0059
IL_0054: leave IL_0188
IL_0059: ldarg.0
IL_005a: ldc.i4.m1
IL_005b: dup
IL_005c: stloc.0
IL_005d: stfld ""int C.<F>d__0.<>1__state""
IL_0062: nop
IL_0063: ldarg.0
IL_0064: call ""int C.F2()""
IL_0069: stfld ""int C.<F>d__0.<>2__current""
IL_006e: ldarg.0
IL_006f: ldc.i4.s -5
IL_0071: dup
IL_0072: stloc.0
IL_0073: stfld ""int C.<F>d__0.<>1__state""
IL_0078: leave IL_01b1
IL_007d: ldarg.0
IL_007e: ldc.i4.m1
IL_007f: dup
IL_0080: stloc.0
IL_0081: stfld ""int C.<F>d__0.<>1__state""
IL_0086: ldarg.0
IL_0087: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_008c: brfalse.s IL_0093
IL_008e: leave IL_0188
IL_0093: ldc.i4.2
IL_0094: call ""System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)""
IL_0099: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_009e: stloc.1
IL_009f: ldloca.s V_1
IL_00a1: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_00a6: brtrue.s IL_00eb
IL_00a8: ldarg.0
IL_00a9: ldc.i4.1
IL_00aa: dup
IL_00ab: stloc.0
IL_00ac: stfld ""int C.<F>d__0.<>1__state""
IL_00b1: ldarg.0
IL_00b2: ldloc.1
IL_00b3: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00b8: ldarg.0
IL_00b9: stloc.2
IL_00ba: ldarg.0
IL_00bb: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_00c0: ldloca.s V_1
IL_00c2: ldloca.s V_2
IL_00c4: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)""
IL_00c9: nop
IL_00ca: leave IL_01be
IL_00cf: ldarg.0
IL_00d0: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00d5: stloc.1
IL_00d6: ldarg.0
IL_00d7: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00dc: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_00e2: ldarg.0
IL_00e3: ldc.i4.m1
IL_00e4: dup
IL_00e5: stloc.0
IL_00e6: stfld ""int C.<F>d__0.<>1__state""
IL_00eb: ldloca.s V_1
IL_00ed: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_00f2: pop
IL_00f3: ldc.i4.1
IL_00f4: call ""System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)""
IL_00f9: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_00fe: stloc.3
IL_00ff: ldloca.s V_3
IL_0101: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_0106: brtrue.s IL_014b
IL_0108: ldarg.0
IL_0109: ldc.i4.0
IL_010a: dup
IL_010b: stloc.0
IL_010c: stfld ""int C.<F>d__0.<>1__state""
IL_0111: ldarg.0
IL_0112: ldloc.3
IL_0113: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_0118: ldarg.0
IL_0119: stloc.2
IL_011a: ldarg.0
IL_011b: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0120: ldloca.s V_3
IL_0122: ldloca.s V_2
IL_0124: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)""
IL_0129: nop
IL_012a: leave IL_01be
IL_012f: ldarg.0
IL_0130: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_0135: stloc.3
IL_0136: ldarg.0
IL_0137: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_013c: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_0142: ldarg.0
IL_0143: ldc.i4.m1
IL_0144: dup
IL_0145: stloc.0
IL_0146: stfld ""int C.<F>d__0.<>1__state""
IL_014b: ldloca.s V_3
IL_014d: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_0152: pop
IL_0153: call ""void C.End()""
IL_0158: nop
IL_0159: leave.s IL_0188
}
catch System.Exception
{
IL_015b: stloc.s V_4
IL_015d: ldarg.0
IL_015e: ldc.i4.s -2
IL_0160: stfld ""int C.<F>d__0.<>1__state""
IL_0165: ldarg.0
IL_0166: ldc.i4.0
IL_0167: stfld ""int C.<F>d__0.<>2__current""
IL_016c: ldarg.0
IL_016d: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0172: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_0177: nop
IL_0178: ldarg.0
IL_0179: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_017e: ldloc.s V_4
IL_0180: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetException(System.Exception)""
IL_0185: nop
IL_0186: leave.s IL_01be
}
IL_0188: ldarg.0
IL_0189: ldc.i4.s -2
IL_018b: stfld ""int C.<F>d__0.<>1__state""
IL_0190: ldarg.0
IL_0191: ldc.i4.0
IL_0192: stfld ""int C.<F>d__0.<>2__current""
IL_0197: ldarg.0
IL_0198: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_019d: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_01a2: nop
IL_01a3: ldarg.0
IL_01a4: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_01a9: ldc.i4.0
IL_01aa: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_01af: nop
IL_01b0: ret
IL_01b1: ldarg.0
IL_01b2: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_01b7: ldc.i4.1
IL_01b8: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_01bd: nop
IL_01be: ret
}");
diff3.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 339 (0x153)
.maxstack 3
.locals init (int V_0,
System.Runtime.CompilerServices.TaskAwaiter<int> V_1,
C.<F>d__0 V_2,
System.Exception V_3)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: ldc.i4.s -5
IL_000a: beq.s IL_001a
IL_000c: br.s IL_000e
IL_000e: ldloc.0
IL_000f: ldc.i4.s -3
IL_0011: beq.s IL_001c
IL_0013: br.s IL_0015
IL_0015: ldloc.0
IL_0016: brfalse.s IL_001e
IL_0018: br.s IL_0023
IL_001a: br.s IL_0073
IL_001c: br.s IL_0042
IL_001e: br IL_00c5
IL_0023: ldloc.0
IL_0024: ldc.i4.0
IL_0025: blt.s IL_0032
IL_0027: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedAsyncMethod + @"""
IL_002c: newobj ""System.InvalidOperationException..ctor(string)""
IL_0031: throw
IL_0032: ldloc.0
IL_0033: ldc.i4.s -4
IL_0035: bgt.s IL_0042
IL_0037: ldstr """ + CodeAnalysisResources.EncCannotResumeSuspendedIteratorMethod + @"""
IL_003c: newobj ""System.InvalidOperationException..ctor(string)""
IL_0041: throw
IL_0042: ldarg.0
IL_0043: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0048: brfalse.s IL_004f
IL_004a: leave IL_011c
IL_004f: ldarg.0
IL_0050: ldc.i4.m1
IL_0051: dup
IL_0052: stloc.0
IL_0053: stfld ""int C.<F>d__0.<>1__state""
IL_0058: nop
IL_0059: ldarg.0
IL_005a: call ""int C.F2()""
IL_005f: stfld ""int C.<F>d__0.<>2__current""
IL_0064: ldarg.0
IL_0065: ldc.i4.s -5
IL_0067: dup
IL_0068: stloc.0
IL_0069: stfld ""int C.<F>d__0.<>1__state""
IL_006e: leave IL_0145
IL_0073: ldarg.0
IL_0074: ldc.i4.m1
IL_0075: dup
IL_0076: stloc.0
IL_0077: stfld ""int C.<F>d__0.<>1__state""
IL_007c: ldarg.0
IL_007d: ldfld ""bool C.<F>d__0.<>w__disposeMode""
IL_0082: brfalse.s IL_0089
IL_0084: leave IL_011c
IL_0089: ldc.i4.1
IL_008a: call ""System.Threading.Tasks.Task<int> System.Threading.Tasks.Task.FromResult<int>(int)""
IL_008f: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_0094: stloc.1
IL_0095: ldloca.s V_1
IL_0097: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_009c: brtrue.s IL_00e1
IL_009e: ldarg.0
IL_009f: ldc.i4.0
IL_00a0: dup
IL_00a1: stloc.0
IL_00a2: stfld ""int C.<F>d__0.<>1__state""
IL_00a7: ldarg.0
IL_00a8: ldloc.1
IL_00a9: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00ae: ldarg.0
IL_00af: stloc.2
IL_00b0: ldarg.0
IL_00b1: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_00b6: ldloca.s V_1
IL_00b8: ldloca.s V_2
IL_00ba: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__0)""
IL_00bf: nop
IL_00c0: leave IL_0152
IL_00c5: ldarg.0
IL_00c6: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00cb: stloc.1
IL_00cc: ldarg.0
IL_00cd: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__0.<>u__1""
IL_00d2: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_00d8: ldarg.0
IL_00d9: ldc.i4.m1
IL_00da: dup
IL_00db: stloc.0
IL_00dc: stfld ""int C.<F>d__0.<>1__state""
IL_00e1: ldloca.s V_1
IL_00e3: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_00e8: pop
IL_00e9: call ""void C.End()""
IL_00ee: nop
IL_00ef: leave.s IL_011c
}
catch System.Exception
{
IL_00f1: stloc.3
IL_00f2: ldarg.0
IL_00f3: ldc.i4.s -2
IL_00f5: stfld ""int C.<F>d__0.<>1__state""
IL_00fa: ldarg.0
IL_00fb: ldc.i4.0
IL_00fc: stfld ""int C.<F>d__0.<>2__current""
IL_0101: ldarg.0
IL_0102: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0107: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_010c: nop
IL_010d: ldarg.0
IL_010e: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_0113: ldloc.3
IL_0114: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetException(System.Exception)""
IL_0119: nop
IL_011a: leave.s IL_0152
}
IL_011c: ldarg.0
IL_011d: ldc.i4.s -2
IL_011f: stfld ""int C.<F>d__0.<>1__state""
IL_0124: ldarg.0
IL_0125: ldc.i4.0
IL_0126: stfld ""int C.<F>d__0.<>2__current""
IL_012b: ldarg.0
IL_012c: ldflda ""System.Runtime.CompilerServices.AsyncIteratorMethodBuilder C.<F>d__0.<>t__builder""
IL_0131: call ""void System.Runtime.CompilerServices.AsyncIteratorMethodBuilder.Complete()""
IL_0136: nop
IL_0137: ldarg.0
IL_0138: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_013d: ldc.i4.0
IL_013e: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_0143: nop
IL_0144: ret
IL_0145: ldarg.0
IL_0146: ldflda ""System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool> C.<F>d__0.<>v__promiseOfValueOrEnd""
IL_014b: ldc.i4.1
IL_014c: call ""void System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore<bool>.SetResult(bool)""
IL_0151: nop
IL_0152: ret
}");
}
[Fact]
[WorkItem("https://github.com/dotnet/roslyn/issues/69805")]
public void UpdateAwaitForEach_AsyncDisposableEnumerator()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async Task F()
{
<N:0>await foreach (var x in Iterator())</N:0>
{
Body(1);
}
End();
}
IAsyncEnumerable<int> Iterator() => null;
static void Body(int x) {}
static void End() { }
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async Task F()
{
<N:0>await foreach (var x in Iterator())</N:0>
{
Body(2);
}
End();
}
IAsyncEnumerable<int> Iterator() => null;
static void Body(int x) { }
static void End() { }
}");
var asyncStreamsTree = Parse(
AsyncStreamsTypes, options: (CSharpParseOptions)source0.Tree.Options, filename: "AsyncStreams.cs");
var compilation0 = CreateCompilationWithTasksExtensions(new[] { source0.Tree, asyncStreamsTree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource([source1.Tree, asyncStreamsTree]);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
v0.VerifyPdb("C.F", @"
<symbols>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encLocalSlotMap>
<slot kind=""5"" offset=""16"" />
<slot kind=""22"" offset=""16"" />
<slot kind=""23"" offset=""16"" />
<slot kind=""0"" offset=""16"" />
<slot kind=""28"" offset=""16"" />
</encLocalSlotMap>
<encStateMachineStateMap>
<state number=""0"" offset=""16"" />
<state number=""1"" offset=""16"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeDocuments);
v0.VerifyMethodBody("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 477 (0x1dd)
.maxstack 3
.locals init (int V_0,
System.Threading.CancellationToken V_1,
System.Runtime.CompilerServices.ValueTaskAwaiter<bool> V_2,
System.Threading.Tasks.ValueTask<bool> V_3,
C.<F>d__0 V_4,
object V_5,
System.Runtime.CompilerServices.ValueTaskAwaiter V_6,
System.Threading.Tasks.ValueTask V_7,
System.Exception V_8)
// sequence point: <hidden>
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
// sequence point: <hidden>
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0048
IL_0014: br IL_0143
// sequence point: {
IL_0019: nop
// sequence point: await foreach
IL_001a: nop
// sequence point: Iterator()
IL_001b: ldarg.0
IL_001c: ldarg.0
IL_001d: ldfld ""C C.<F>d__0.<>4__this""
IL_0022: call ""System.Collections.Generic.IAsyncEnumerable<int> C.Iterator()""
IL_0027: ldloca.s V_1
IL_0029: initobj ""System.Threading.CancellationToken""
IL_002f: ldloc.1
IL_0030: callvirt ""System.Collections.Generic.IAsyncEnumerator<int> System.Collections.Generic.IAsyncEnumerable<int>.GetAsyncEnumerator(System.Threading.CancellationToken)""
IL_0035: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
// sequence point: <hidden>
IL_003a: ldarg.0
IL_003b: ldnull
IL_003c: stfld ""object C.<F>d__0.<>s__2""
IL_0041: ldarg.0
IL_0042: ldc.i4.0
IL_0043: stfld ""int C.<F>d__0.<>s__3""
// sequence point: <hidden>
IL_0048: nop
.try
{
// sequence point: <hidden>
IL_0049: ldloc.0
IL_004a: brfalse.s IL_004e
IL_004c: br.s IL_0050
IL_004e: br.s IL_00b1
// sequence point: <hidden>
IL_0050: br.s IL_006c
// sequence point: var x
IL_0052: ldarg.0
IL_0053: ldarg.0
IL_0054: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0059: callvirt ""int System.Collections.Generic.IAsyncEnumerator<int>.Current.get""
IL_005e: stfld ""int C.<F>d__0.<x>5__4""
// sequence point: {
IL_0063: nop
// sequence point: Body(1);
IL_0064: ldc.i4.1
IL_0065: call ""void C.Body(int)""
IL_006a: nop
// sequence point: }
IL_006b: nop
// sequence point: in
IL_006c: ldarg.0
IL_006d: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0072: callvirt ""System.Threading.Tasks.ValueTask<bool> System.Collections.Generic.IAsyncEnumerator<int>.MoveNextAsync()""
IL_0077: stloc.3
IL_0078: ldloca.s V_3
IL_007a: call ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> System.Threading.Tasks.ValueTask<bool>.GetAwaiter()""
IL_007f: stloc.2
// sequence point: <hidden>
IL_0080: ldloca.s V_2
IL_0082: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.IsCompleted.get""
IL_0087: brtrue.s IL_00cd
IL_0089: ldarg.0
IL_008a: ldc.i4.0
IL_008b: dup
IL_008c: stloc.0
IL_008d: stfld ""int C.<F>d__0.<>1__state""
// async: yield
IL_0092: ldarg.0
IL_0093: ldloc.2
IL_0094: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_0099: ldarg.0
IL_009a: stloc.s V_4
IL_009c: ldarg.0
IL_009d: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_00a2: ldloca.s V_2
IL_00a4: ldloca.s V_4
IL_00a6: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, ref C.<F>d__0)""
IL_00ab: nop
IL_00ac: leave IL_01dc
// async: resume
IL_00b1: ldarg.0
IL_00b2: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00b7: stloc.2
IL_00b8: ldarg.0
IL_00b9: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00be: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool>""
IL_00c4: ldarg.0
IL_00c5: ldc.i4.m1
IL_00c6: dup
IL_00c7: stloc.0
IL_00c8: stfld ""int C.<F>d__0.<>1__state""
IL_00cd: ldarg.0
IL_00ce: ldloca.s V_2
IL_00d0: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.GetResult()""
IL_00d5: stfld ""bool C.<F>d__0.<>s__5""
IL_00da: ldarg.0
IL_00db: ldfld ""bool C.<F>d__0.<>s__5""
IL_00e0: brtrue IL_0052
// sequence point: <hidden>
IL_00e5: leave.s IL_00f3
}
catch object
{
// sequence point: <hidden>
IL_00e7: stloc.s V_5
IL_00e9: ldarg.0
IL_00ea: ldloc.s V_5
IL_00ec: stfld ""object C.<F>d__0.<>s__2""
IL_00f1: leave.s IL_00f3
}
// sequence point: <hidden>
IL_00f3: ldarg.0
IL_00f4: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_00f9: brfalse.s IL_0168
IL_00fb: ldarg.0
IL_00fc: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0101: callvirt ""System.Threading.Tasks.ValueTask System.IAsyncDisposable.DisposeAsync()""
IL_0106: stloc.s V_7
IL_0108: ldloca.s V_7
IL_010a: call ""System.Runtime.CompilerServices.ValueTaskAwaiter System.Threading.Tasks.ValueTask.GetAwaiter()""
IL_010f: stloc.s V_6
// sequence point: <hidden>
IL_0111: ldloca.s V_6
IL_0113: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter.IsCompleted.get""
IL_0118: brtrue.s IL_0160
IL_011a: ldarg.0
IL_011b: ldc.i4.1
IL_011c: dup
IL_011d: stloc.0
IL_011e: stfld ""int C.<F>d__0.<>1__state""
// async: yield
IL_0123: ldarg.0
IL_0124: ldloc.s V_6
IL_0126: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_012b: ldarg.0
IL_012c: stloc.s V_4
IL_012e: ldarg.0
IL_012f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0134: ldloca.s V_6
IL_0136: ldloca.s V_4
IL_0138: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter, ref C.<F>d__0)""
IL_013d: nop
IL_013e: leave IL_01dc
// async: resume
IL_0143: ldarg.0
IL_0144: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0149: stloc.s V_6
IL_014b: ldarg.0
IL_014c: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0151: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter""
IL_0157: ldarg.0
IL_0158: ldc.i4.m1
IL_0159: dup
IL_015a: stloc.0
IL_015b: stfld ""int C.<F>d__0.<>1__state""
IL_0160: ldloca.s V_6
IL_0162: call ""void System.Runtime.CompilerServices.ValueTaskAwaiter.GetResult()""
IL_0167: nop
// sequence point: <hidden>
IL_0168: ldarg.0
IL_0169: ldfld ""object C.<F>d__0.<>s__2""
IL_016e: stloc.s V_5
IL_0170: ldloc.s V_5
IL_0172: brfalse.s IL_0191
IL_0174: ldloc.s V_5
IL_0176: isinst ""System.Exception""
IL_017b: stloc.s V_8
IL_017d: ldloc.s V_8
IL_017f: brtrue.s IL_0184
IL_0181: ldloc.s V_5
IL_0183: throw
IL_0184: ldloc.s V_8
IL_0186: call ""System.Runtime.ExceptionServices.ExceptionDispatchInfo System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(System.Exception)""
IL_018b: callvirt ""void System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()""
IL_0190: nop
IL_0191: ldarg.0
IL_0192: ldfld ""int C.<F>d__0.<>s__3""
IL_0197: pop
IL_0198: ldarg.0
IL_0199: ldnull
IL_019a: stfld ""object C.<F>d__0.<>s__2""
IL_019f: ldarg.0
IL_01a0: ldnull
IL_01a1: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
// sequence point: End();
IL_01a6: call ""void C.End()""
IL_01ab: nop
IL_01ac: leave.s IL_01c8
}
catch System.Exception
{
// sequence point: <hidden>
IL_01ae: stloc.s V_8
IL_01b0: ldarg.0
IL_01b1: ldc.i4.s -2
IL_01b3: stfld ""int C.<F>d__0.<>1__state""
IL_01b8: ldarg.0
IL_01b9: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_01be: ldloc.s V_8
IL_01c0: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_01c5: nop
IL_01c6: leave.s IL_01dc
}
// sequence point: }
IL_01c8: ldarg.0
IL_01c9: ldc.i4.s -2
IL_01cb: stfld ""int C.<F>d__0.<>1__state""
// sequence point: <hidden>
IL_01d0: ldarg.0
IL_01d1: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_01d6: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_01db: nop
IL_01dc: ret
}
");
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 477 (0x1dd)
.maxstack 3
.locals init (int V_0,
System.Threading.CancellationToken V_1,
System.Runtime.CompilerServices.ValueTaskAwaiter<bool> V_2,
System.Threading.Tasks.ValueTask<bool> V_3,
C.<F>d__0 V_4,
object V_5,
System.Runtime.CompilerServices.ValueTaskAwaiter V_6,
System.Threading.Tasks.ValueTask V_7,
System.Exception V_8)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0048
IL_0014: br IL_0143
IL_0019: nop
IL_001a: nop
IL_001b: ldarg.0
IL_001c: ldarg.0
IL_001d: ldfld ""C C.<F>d__0.<>4__this""
IL_0022: call ""System.Collections.Generic.IAsyncEnumerable<int> C.Iterator()""
IL_0027: ldloca.s V_1
IL_0029: initobj ""System.Threading.CancellationToken""
IL_002f: ldloc.1
IL_0030: callvirt ""System.Collections.Generic.IAsyncEnumerator<int> System.Collections.Generic.IAsyncEnumerable<int>.GetAsyncEnumerator(System.Threading.CancellationToken)""
IL_0035: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_003a: ldarg.0
IL_003b: ldnull
IL_003c: stfld ""object C.<F>d__0.<>s__2""
IL_0041: ldarg.0
IL_0042: ldc.i4.0
IL_0043: stfld ""int C.<F>d__0.<>s__3""
IL_0048: nop
.try
{
IL_0049: ldloc.0
IL_004a: brfalse.s IL_004e
IL_004c: br.s IL_0050
IL_004e: br.s IL_00b1
IL_0050: br.s IL_006c
IL_0052: ldarg.0
IL_0053: ldarg.0
IL_0054: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0059: callvirt ""int System.Collections.Generic.IAsyncEnumerator<int>.Current.get""
IL_005e: stfld ""int C.<F>d__0.<x>5__4""
IL_0063: nop
IL_0064: ldc.i4.2
IL_0065: call ""void C.Body(int)""
IL_006a: nop
IL_006b: nop
IL_006c: ldarg.0
IL_006d: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0072: callvirt ""System.Threading.Tasks.ValueTask<bool> System.Collections.Generic.IAsyncEnumerator<int>.MoveNextAsync()""
IL_0077: stloc.3
IL_0078: ldloca.s V_3
IL_007a: call ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> System.Threading.Tasks.ValueTask<bool>.GetAwaiter()""
IL_007f: stloc.2
IL_0080: ldloca.s V_2
IL_0082: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.IsCompleted.get""
IL_0087: brtrue.s IL_00cd
IL_0089: ldarg.0
IL_008a: ldc.i4.0
IL_008b: dup
IL_008c: stloc.0
IL_008d: stfld ""int C.<F>d__0.<>1__state""
IL_0092: ldarg.0
IL_0093: ldloc.2
IL_0094: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_0099: ldarg.0
IL_009a: stloc.s V_4
IL_009c: ldarg.0
IL_009d: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_00a2: ldloca.s V_2
IL_00a4: ldloca.s V_4
IL_00a6: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, ref C.<F>d__0)""
IL_00ab: nop
IL_00ac: leave IL_01dc
IL_00b1: ldarg.0
IL_00b2: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00b7: stloc.2
IL_00b8: ldarg.0
IL_00b9: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00be: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool>""
IL_00c4: ldarg.0
IL_00c5: ldc.i4.m1
IL_00c6: dup
IL_00c7: stloc.0
IL_00c8: stfld ""int C.<F>d__0.<>1__state""
IL_00cd: ldarg.0
IL_00ce: ldloca.s V_2
IL_00d0: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.GetResult()""
IL_00d5: stfld ""bool C.<F>d__0.<>s__5""
IL_00da: ldarg.0
IL_00db: ldfld ""bool C.<F>d__0.<>s__5""
IL_00e0: brtrue IL_0052
IL_00e5: leave.s IL_00f3
}
catch object
{
IL_00e7: stloc.s V_5
IL_00e9: ldarg.0
IL_00ea: ldloc.s V_5
IL_00ec: stfld ""object C.<F>d__0.<>s__2""
IL_00f1: leave.s IL_00f3
}
IL_00f3: ldarg.0
IL_00f4: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_00f9: brfalse.s IL_0168
IL_00fb: ldarg.0
IL_00fc: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0101: callvirt ""System.Threading.Tasks.ValueTask System.IAsyncDisposable.DisposeAsync()""
IL_0106: stloc.s V_7
IL_0108: ldloca.s V_7
IL_010a: call ""System.Runtime.CompilerServices.ValueTaskAwaiter System.Threading.Tasks.ValueTask.GetAwaiter()""
IL_010f: stloc.s V_6
IL_0111: ldloca.s V_6
IL_0113: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter.IsCompleted.get""
IL_0118: brtrue.s IL_0160
IL_011a: ldarg.0
IL_011b: ldc.i4.1
IL_011c: dup
IL_011d: stloc.0
IL_011e: stfld ""int C.<F>d__0.<>1__state""
IL_0123: ldarg.0
IL_0124: ldloc.s V_6
IL_0126: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_012b: ldarg.0
IL_012c: stloc.s V_4
IL_012e: ldarg.0
IL_012f: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0134: ldloca.s V_6
IL_0136: ldloca.s V_4
IL_0138: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter, ref C.<F>d__0)""
IL_013d: nop
IL_013e: leave IL_01dc
IL_0143: ldarg.0
IL_0144: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0149: stloc.s V_6
IL_014b: ldarg.0
IL_014c: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter C.<F>d__0.<>u__2""
IL_0151: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter""
IL_0157: ldarg.0
IL_0158: ldc.i4.m1
IL_0159: dup
IL_015a: stloc.0
IL_015b: stfld ""int C.<F>d__0.<>1__state""
IL_0160: ldloca.s V_6
IL_0162: call ""void System.Runtime.CompilerServices.ValueTaskAwaiter.GetResult()""
IL_0167: nop
IL_0168: ldarg.0
IL_0169: ldfld ""object C.<F>d__0.<>s__2""
IL_016e: stloc.s V_5
IL_0170: ldloc.s V_5
IL_0172: brfalse.s IL_0191
IL_0174: ldloc.s V_5
IL_0176: isinst ""System.Exception""
IL_017b: stloc.s V_8
IL_017d: ldloc.s V_8
IL_017f: brtrue.s IL_0184
IL_0181: ldloc.s V_5
IL_0183: throw
IL_0184: ldloc.s V_8
IL_0186: call ""System.Runtime.ExceptionServices.ExceptionDispatchInfo System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(System.Exception)""
IL_018b: callvirt ""void System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()""
IL_0190: nop
IL_0191: ldarg.0
IL_0192: ldfld ""int C.<F>d__0.<>s__3""
IL_0197: pop
IL_0198: ldarg.0
IL_0199: ldnull
IL_019a: stfld ""object C.<F>d__0.<>s__2""
IL_019f: ldarg.0
IL_01a0: ldnull
IL_01a1: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_01a6: call ""void C.End()""
IL_01ab: nop
IL_01ac: leave.s IL_01c8
}
catch System.Exception
{
IL_01ae: stloc.s V_8
IL_01b0: ldarg.0
IL_01b1: ldc.i4.s -2
IL_01b3: stfld ""int C.<F>d__0.<>1__state""
IL_01b8: ldarg.0
IL_01b9: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_01be: ldloc.s V_8
IL_01c0: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_01c5: nop
IL_01c6: leave.s IL_01dc
}
IL_01c8: ldarg.0
IL_01c9: ldc.i4.s -2
IL_01cb: stfld ""int C.<F>d__0.<>1__state""
IL_01d0: ldarg.0
IL_01d1: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_01d6: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_01db: nop
IL_01dc: ret
}");
}
[Fact]
[WorkItem("https://github.com/dotnet/roslyn/issues/69805")]
public void UpdateAwaitForEach_NonDisposableEnumerator()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async Task F()
{
<N:0>await foreach (var x in Iterator())</N:0>
{
Body(1);
}
End();
}
IAsyncEnumerable<int> Iterator() => null;
static void Body(int x) {}
static void End() { }
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
using System.Threading.Tasks;
class C
{
async Task F()
{
<N:0>await foreach (var x in Iterator())</N:0>
{
Body(2);
}
End();
}
IAsyncEnumerable<int> Iterator() => null;
static void Body(int x) { }
static void End() { }
}");
var asyncStreamsTree = Parse(
NonDisposableAsyncEnumeratorDefinition + CommonAsyncStreamsTypes, options: (CSharpParseOptions)source0.Tree.Options, filename: "AsyncStreams.cs");
var compilation0 = CreateCompilationWithTasksExtensions(new[] { source0.Tree, asyncStreamsTree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(new[] { source1.Tree, asyncStreamsTree });
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
// Both states are allocated eventhough only a single await is emitted:
v0.VerifyPdb("C.F", @"
<symbols>
<methods>
<method containingType=""C"" name=""F"">
<customDebugInfo>
<forwardIterator name=""<F>d__0"" />
<encLocalSlotMap>
<slot kind=""5"" offset=""16"" />
<slot kind=""0"" offset=""16"" />
<slot kind=""28"" offset=""16"" />
</encLocalSlotMap>
<encStateMachineStateMap>
<state number=""0"" offset=""16"" />
<state number=""1"" offset=""16"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeDocuments);
v0.VerifyMethodBody("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 266 (0x10a)
.maxstack 3
.locals init (int V_0,
System.Threading.CancellationToken V_1,
System.Runtime.CompilerServices.ValueTaskAwaiter<bool> V_2,
System.Threading.Tasks.ValueTask<bool> V_3,
C.<F>d__0 V_4,
System.Exception V_5)
// sequence point: <hidden>
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
// sequence point: <hidden>
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0017
IL_0010: br.s IL_0019
IL_0012: br IL_0098
IL_0017: br.s IL_0098
// sequence point: {
IL_0019: nop
// sequence point: await foreach
IL_001a: nop
// sequence point: Iterator()
IL_001b: ldarg.0
IL_001c: ldarg.0
IL_001d: ldfld ""C C.<F>d__0.<>4__this""
IL_0022: call ""System.Collections.Generic.IAsyncEnumerable<int> C.Iterator()""
IL_0027: ldloca.s V_1
IL_0029: initobj ""System.Threading.CancellationToken""
IL_002f: ldloc.1
IL_0030: callvirt ""System.Collections.Generic.IAsyncEnumerator<int> System.Collections.Generic.IAsyncEnumerable<int>.GetAsyncEnumerator(System.Threading.CancellationToken)""
IL_0035: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
// sequence point: <hidden>
IL_003a: br.s IL_0056
// sequence point: var x
IL_003c: ldarg.0
IL_003d: ldarg.0
IL_003e: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0043: callvirt ""int System.Collections.Generic.IAsyncEnumerator<int>.Current.get""
IL_0048: stfld ""int C.<F>d__0.<x>5__2""
// sequence point: {
IL_004d: nop
// sequence point: Body(1);
IL_004e: ldc.i4.1
IL_004f: call ""void C.Body(int)""
IL_0054: nop
// sequence point: }
IL_0055: nop
// sequence point: in
IL_0056: ldarg.0
IL_0057: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_005c: callvirt ""System.Threading.Tasks.ValueTask<bool> System.Collections.Generic.IAsyncEnumerator<int>.MoveNextAsync()""
IL_0061: stloc.3
IL_0062: ldloca.s V_3
IL_0064: call ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> System.Threading.Tasks.ValueTask<bool>.GetAwaiter()""
IL_0069: stloc.2
// sequence point: <hidden>
IL_006a: ldloca.s V_2
IL_006c: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.IsCompleted.get""
IL_0071: brtrue.s IL_00b4
IL_0073: ldarg.0
IL_0074: ldc.i4.0
IL_0075: dup
IL_0076: stloc.0
IL_0077: stfld ""int C.<F>d__0.<>1__state""
// async: yield
IL_007c: ldarg.0
IL_007d: ldloc.2
IL_007e: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_0083: ldarg.0
IL_0084: stloc.s V_4
IL_0086: ldarg.0
IL_0087: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_008c: ldloca.s V_2
IL_008e: ldloca.s V_4
IL_0090: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, ref C.<F>d__0)""
IL_0095: nop
IL_0096: leave.s IL_0109
// async: resume
IL_0098: ldarg.0
IL_0099: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_009e: stloc.2
IL_009f: ldarg.0
IL_00a0: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00a5: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool>""
IL_00ab: ldarg.0
IL_00ac: ldc.i4.m1
IL_00ad: dup
IL_00ae: stloc.0
IL_00af: stfld ""int C.<F>d__0.<>1__state""
IL_00b4: ldarg.0
IL_00b5: ldloca.s V_2
IL_00b7: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.GetResult()""
IL_00bc: stfld ""bool C.<F>d__0.<>s__3""
IL_00c1: ldarg.0
IL_00c2: ldfld ""bool C.<F>d__0.<>s__3""
IL_00c7: brtrue IL_003c
IL_00cc: ldarg.0
IL_00cd: ldnull
IL_00ce: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
// sequence point: End();
IL_00d3: call ""void C.End()""
IL_00d8: nop
IL_00d9: leave.s IL_00f5
}
catch System.Exception
{
// sequence point: <hidden>
IL_00db: stloc.s V_5
IL_00dd: ldarg.0
IL_00de: ldc.i4.s -2
IL_00e0: stfld ""int C.<F>d__0.<>1__state""
IL_00e5: ldarg.0
IL_00e6: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_00eb: ldloc.s V_5
IL_00ed: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_00f2: nop
IL_00f3: leave.s IL_0109
}
// sequence point: }
IL_00f5: ldarg.0
IL_00f6: ldc.i4.s -2
IL_00f8: stfld ""int C.<F>d__0.<>1__state""
// sequence point: <hidden>
IL_00fd: ldarg.0
IL_00fe: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0103: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_0108: nop
IL_0109: ret
}");
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 266 (0x10a)
.maxstack 3
.locals init (int V_0,
System.Threading.CancellationToken V_1,
System.Runtime.CompilerServices.ValueTaskAwaiter<bool> V_2,
System.Threading.Tasks.ValueTask<bool> V_3,
C.<F>d__0 V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0017
IL_0010: br.s IL_0019
IL_0012: br IL_0098
IL_0017: br.s IL_0098
IL_0019: nop
IL_001a: nop
IL_001b: ldarg.0
IL_001c: ldarg.0
IL_001d: ldfld ""C C.<F>d__0.<>4__this""
IL_0022: call ""System.Collections.Generic.IAsyncEnumerable<int> C.Iterator()""
IL_0027: ldloca.s V_1
IL_0029: initobj ""System.Threading.CancellationToken""
IL_002f: ldloc.1
IL_0030: callvirt ""System.Collections.Generic.IAsyncEnumerator<int> System.Collections.Generic.IAsyncEnumerable<int>.GetAsyncEnumerator(System.Threading.CancellationToken)""
IL_0035: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_003a: br.s IL_0056
IL_003c: ldarg.0
IL_003d: ldarg.0
IL_003e: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_0043: callvirt ""int System.Collections.Generic.IAsyncEnumerator<int>.Current.get""
IL_0048: stfld ""int C.<F>d__0.<x>5__2""
IL_004d: nop
IL_004e: ldc.i4.2
IL_004f: call ""void C.Body(int)""
IL_0054: nop
IL_0055: nop
IL_0056: ldarg.0
IL_0057: ldfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_005c: callvirt ""System.Threading.Tasks.ValueTask<bool> System.Collections.Generic.IAsyncEnumerator<int>.MoveNextAsync()""
IL_0061: stloc.3
IL_0062: ldloca.s V_3
IL_0064: call ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> System.Threading.Tasks.ValueTask<bool>.GetAwaiter()""
IL_0069: stloc.2
IL_006a: ldloca.s V_2
IL_006c: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.IsCompleted.get""
IL_0071: brtrue.s IL_00b4
IL_0073: ldarg.0
IL_0074: ldc.i4.0
IL_0075: dup
IL_0076: stloc.0
IL_0077: stfld ""int C.<F>d__0.<>1__state""
IL_007c: ldarg.0
IL_007d: ldloc.2
IL_007e: stfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_0083: ldarg.0
IL_0084: stloc.s V_4
IL_0086: ldarg.0
IL_0087: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_008c: ldloca.s V_2
IL_008e: ldloca.s V_4
IL_0090: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, C.<F>d__0>(ref System.Runtime.CompilerServices.ValueTaskAwaiter<bool>, ref C.<F>d__0)""
IL_0095: nop
IL_0096: leave.s IL_0109
IL_0098: ldarg.0
IL_0099: ldfld ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_009e: stloc.2
IL_009f: ldarg.0
IL_00a0: ldflda ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool> C.<F>d__0.<>u__1""
IL_00a5: initobj ""System.Runtime.CompilerServices.ValueTaskAwaiter<bool>""
IL_00ab: ldarg.0
IL_00ac: ldc.i4.m1
IL_00ad: dup
IL_00ae: stloc.0
IL_00af: stfld ""int C.<F>d__0.<>1__state""
IL_00b4: ldarg.0
IL_00b5: ldloca.s V_2
IL_00b7: call ""bool System.Runtime.CompilerServices.ValueTaskAwaiter<bool>.GetResult()""
IL_00bc: stfld ""bool C.<F>d__0.<>s__3""
IL_00c1: ldarg.0
IL_00c2: ldfld ""bool C.<F>d__0.<>s__3""
IL_00c7: brtrue IL_003c
IL_00cc: ldarg.0
IL_00cd: ldnull
IL_00ce: stfld ""System.Collections.Generic.IAsyncEnumerator<int> C.<F>d__0.<>s__1""
IL_00d3: call ""void C.End()""
IL_00d8: nop
IL_00d9: leave.s IL_00f5
}
catch System.Exception
{
IL_00db: stloc.s V_5
IL_00dd: ldarg.0
IL_00de: ldc.i4.s -2
IL_00e0: stfld ""int C.<F>d__0.<>1__state""
IL_00e5: ldarg.0
IL_00e6: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_00eb: ldloc.s V_5
IL_00ed: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetException(System.Exception)""
IL_00f2: nop
IL_00f3: leave.s IL_0109
}
IL_00f5: ldarg.0
IL_00f6: ldc.i4.s -2
IL_00f8: stfld ""int C.<F>d__0.<>1__state""
IL_00fd: ldarg.0
IL_00fe: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder C.<F>d__0.<>t__builder""
IL_0103: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder.SetResult()""
IL_0108: nop
IL_0109: ret
}
");
}
[Fact]
public void HoistedVariables_MultipleGenerations()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static async Task<int> F() // testing type changes G0 -> G1, G1 -> G2
{
bool <N:0>a1 = true</N:0>;
int <N:1>a2 = 3</N:1>;
<N:2>await Task.Delay(0)</N:2>;
return 1;
}
static async Task<int> G() // testing G1 -> G3
{
C <N:3>c = new C()</N:3>;
bool <N:4>a1 = true</N:4>;
<N:5>await Task.Delay(0)</N:5>;
return 1;
}
static async Task<int> H() // testing G0 -> G3
{
C <N:6>c = new C()</N:6>;
bool <N:7>a1 = true</N:7>;
<N:8>await Task.Delay(0)</N:8>;
return 1;
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static async Task<int> F() // updated
{
C <N:0>a1 = new C()</N:0>;
int <N:1>a2 = 3</N:1>;
<N:2>await Task.Delay(0)</N:2>;
return 1;
}
static async Task<int> G() // updated
{
C <N:3>c = new C()</N:3>;
bool <N:4>a1 = true</N:4>;
<N:5>await Task.Delay(0)</N:5>;
return 2;
}
static async Task<int> H()
{
C <N:6>c = new C()</N:6>;
bool <N:7>a1 = true</N:7>;
<N:8>await Task.Delay(0)</N:8>;
return 1;
}
}");
var source2 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static async Task<int> F() // updated
{
bool <N:0>a1 = true</N:0>;
C <N:1>a2 = new C()</N:1>;
<N:2>await Task.Delay(0)</N:2>;
return 1;
}
static async Task<int> G()
{
C <N:3>c = new C()</N:3>;
bool <N:4>a1 = true</N:4>;
<N:5>await Task.Delay(0)</N:5>;
return 2;
}
static async Task<int> H()
{
C <N:6>c = new C()</N:6>;
bool <N:7>a1 = true</N:7>;
<N:8>await Task.Delay(0)</N:8>;
return 1;
}
}");
var source3 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
bool <N:0>a1 = true</N:0>;
C <N:1>a2 = new C()</N:1>;
<N:2>await Task.Delay(0)</N:2>;
return 1;
}
static async Task<int> G() // updated
{
C <N:3>c = new C()</N:3>;
C <N:4>a1 = new C()</N:4>;
<N:5>await Task.Delay(0)</N:5>;
return 1;
}
static async Task<int> H() // updated
{
C <N:6>c = new C()</N:6>;
C <N:7>a1 = new C()</N:7>;
<N:8>await Task.Delay(0)</N:8>;
return 1;
}
}");
// Rude edit but the compiler should handle it.
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All));
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var compilation3 = compilation2.WithSource(source3.Tree);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var f3 = compilation3.GetMember<MethodSymbol>("C.F");
var g0 = compilation0.GetMember<MethodSymbol>("C.G");
var g1 = compilation1.GetMember<MethodSymbol>("C.G");
var g2 = compilation2.GetMember<MethodSymbol>("C.G");
var g3 = compilation3.GetMember<MethodSymbol>("C.G");
var h0 = compilation0.GetMember<MethodSymbol>("C.H");
var h1 = compilation1.GetMember<MethodSymbol>("C.H");
var h2 = compilation2.GetMember<MethodSymbol>("C.H");
var h3 = compilation3.GetMember<MethodSymbol>("C.H");
var v0 = CompileAndVerify(compilation0, symbolValidator: module =>
{
Assert.Equal(new[]
{
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>",
"<a1>5__1: bool",
"<a2>5__2: int",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter"
}, module.GetFieldNamesAndTypes("C.<F>d__0"));
});
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var syntaxMap1 = GetSyntaxMapFromMarkers(source0, source1);
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, syntaxMap1),
SemanticEdit.Create(SemanticEditKind.Update, g0, g1, syntaxMap1)));
diff1.VerifySynthesizedMembers(
"C: {<F>d__0, <G>d__1}",
"C.<F>d__0: {<>1__state, <>t__builder, <a1>5__3, <a2>5__2, <>u__1, MoveNext, SetStateMachine}",
"C.<G>d__1: {<>1__state, <>t__builder, <c>5__1, <a1>5__2, <>u__1, MoveNext, SetStateMachine}");
var syntaxMap2 = GetSyntaxMapFromMarkers(source1, source2);
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, syntaxMap2)));
diff2.VerifySynthesizedMembers(
"C: {<F>d__0, <G>d__1}",
"C.<F>d__0: {<>1__state, <>t__builder, <a1>5__4, <a2>5__5, <>u__1, MoveNext, SetStateMachine, <a1>5__3, <a2>5__2}",
"C.<G>d__1: {<>1__state, <>t__builder, <c>5__1, <a1>5__2, <>u__1, MoveNext, SetStateMachine}");
var syntaxMap3 = GetSyntaxMapFromMarkers(source2, source3);
var diff3 = compilation3.EmitDifference(
diff2.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, g2, g3, syntaxMap3),
SemanticEdit.Create(SemanticEditKind.Update, h2, h3, syntaxMap3)));
diff3.VerifySynthesizedMembers(
"C: {<G>d__1, <H>d__2, <F>d__0}",
"C.<F>d__0: {<>1__state, <>t__builder, <a1>5__4, <a2>5__5, <>u__1, MoveNext, SetStateMachine, <a1>5__3, <a2>5__2}",
"C.<G>d__1: {<>1__state, <>t__builder, <c>5__1, <a1>5__3, <>u__1, MoveNext, SetStateMachine, <a1>5__2}",
"C.<H>d__2: {<>1__state, <>t__builder, <c>5__1, <a1>5__3, <>u__1, MoveNext, SetStateMachine}");
// Verify delta metadata contains expected rows.
var md1 = diff1.GetMetadata();
var md2 = diff2.GetMetadata();
var md3 = diff3.GetMetadata();
// 1 field def added & 4 methods updated (MoveNext and kickoff for F and G)
CheckEncLogDefinitions(md1.Reader,
Row(7, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(8, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(9, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(10, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(16, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(2, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff1.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 192 (0xc0)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter V_2,
C.<F>d__0 V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_000c
IL_000a: br.s IL_000e
IL_000c: br.s IL_005a
IL_000e: nop
IL_000f: ldarg.0
IL_0010: newobj ""C..ctor()""
IL_0015: stfld ""C C.<F>d__0.<a1>5__3""
IL_001a: ldarg.0
IL_001b: ldc.i4.3
IL_001c: stfld ""int C.<F>d__0.<a2>5__2""
IL_0021: ldc.i4.0
IL_0022: call ""System.Threading.Tasks.Task System.Threading.Tasks.Task.Delay(int)""
IL_0027: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_002c: stloc.2
IL_002d: ldloca.s V_2
IL_002f: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0034: brtrue.s IL_0076
IL_0036: ldarg.0
IL_0037: ldc.i4.0
IL_0038: dup
IL_0039: stloc.0
IL_003a: stfld ""int C.<F>d__0.<>1__state""
IL_003f: ldarg.0
IL_0040: ldloc.2
IL_0041: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0046: ldarg.0
IL_0047: stloc.3
IL_0048: ldarg.0
IL_0049: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_004e: ldloca.s V_2
IL_0050: ldloca.s V_3
IL_0052: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__0)""
IL_0057: nop
IL_0058: leave.s IL_00bf
IL_005a: ldarg.0
IL_005b: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0060: stloc.2
IL_0061: ldarg.0
IL_0062: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0067: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_006d: ldarg.0
IL_006e: ldc.i4.m1
IL_006f: dup
IL_0070: stloc.0
IL_0071: stfld ""int C.<F>d__0.<>1__state""
IL_0076: ldloca.s V_2
IL_0078: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_007d: nop
IL_007e: ldc.i4.1
IL_007f: stloc.1
IL_0080: leave.s IL_00a3
}
catch System.Exception
{
IL_0082: stloc.s V_4
IL_0084: ldarg.0
IL_0085: ldc.i4.s -2
IL_0087: stfld ""int C.<F>d__0.<>1__state""
IL_008c: ldarg.0
IL_008d: ldnull
IL_008e: stfld ""C C.<F>d__0.<a1>5__3""
IL_0093: ldarg.0
IL_0094: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_0099: ldloc.s V_4
IL_009b: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)""
IL_00a0: nop
IL_00a1: leave.s IL_00bf
}
IL_00a3: ldarg.0
IL_00a4: ldc.i4.s -2
IL_00a6: stfld ""int C.<F>d__0.<>1__state""
IL_00ab: ldarg.0
IL_00ac: ldnull
IL_00ad: stfld ""C C.<F>d__0.<a1>5__3""
IL_00b2: ldarg.0
IL_00b3: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_00b8: ldloc.1
IL_00b9: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)""
IL_00be: nop
IL_00bf: ret
}");
// 2 field defs added (both variables a1 and a2 of F changed their types) & 2 methods updated
CheckEncLogDefinitions(md2.Reader,
Row(11, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(12, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(17, TableIndex.Field, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(18, TableIndex.Field, EditAndContinueOperation.Default),
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(1, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(2, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff2.VerifyIL("C.<F>d__0.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 192 (0xc0)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter V_2,
C.<F>d__0 V_3,
System.Exception V_4)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_000c
IL_000a: br.s IL_000e
IL_000c: br.s IL_005a
IL_000e: nop
IL_000f: ldarg.0
IL_0010: ldc.i4.1
IL_0011: stfld ""bool C.<F>d__0.<a1>5__4""
IL_0016: ldarg.0
IL_0017: newobj ""C..ctor()""
IL_001c: stfld ""C C.<F>d__0.<a2>5__5""
IL_0021: ldc.i4.0
IL_0022: call ""System.Threading.Tasks.Task System.Threading.Tasks.Task.Delay(int)""
IL_0027: callvirt ""System.Runtime.CompilerServices.TaskAwaiter System.Threading.Tasks.Task.GetAwaiter()""
IL_002c: stloc.2
IL_002d: ldloca.s V_2
IL_002f: call ""bool System.Runtime.CompilerServices.TaskAwaiter.IsCompleted.get""
IL_0034: brtrue.s IL_0076
IL_0036: ldarg.0
IL_0037: ldc.i4.0
IL_0038: dup
IL_0039: stloc.0
IL_003a: stfld ""int C.<F>d__0.<>1__state""
IL_003f: ldarg.0
IL_0040: ldloc.2
IL_0041: stfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0046: ldarg.0
IL_0047: stloc.3
IL_0048: ldarg.0
IL_0049: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_004e: ldloca.s V_2
IL_0050: ldloca.s V_3
IL_0052: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter, C.<F>d__0>(ref System.Runtime.CompilerServices.TaskAwaiter, ref C.<F>d__0)""
IL_0057: nop
IL_0058: leave.s IL_00bf
IL_005a: ldarg.0
IL_005b: ldfld ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0060: stloc.2
IL_0061: ldarg.0
IL_0062: ldflda ""System.Runtime.CompilerServices.TaskAwaiter C.<F>d__0.<>u__1""
IL_0067: initobj ""System.Runtime.CompilerServices.TaskAwaiter""
IL_006d: ldarg.0
IL_006e: ldc.i4.m1
IL_006f: dup
IL_0070: stloc.0
IL_0071: stfld ""int C.<F>d__0.<>1__state""
IL_0076: ldloca.s V_2
IL_0078: call ""void System.Runtime.CompilerServices.TaskAwaiter.GetResult()""
IL_007d: nop
IL_007e: ldc.i4.1
IL_007f: stloc.1
IL_0080: leave.s IL_00a3
}
catch System.Exception
{
IL_0082: stloc.s V_4
IL_0084: ldarg.0
IL_0085: ldc.i4.s -2
IL_0087: stfld ""int C.<F>d__0.<>1__state""
IL_008c: ldarg.0
IL_008d: ldnull
IL_008e: stfld ""C C.<F>d__0.<a2>5__5""
IL_0093: ldarg.0
IL_0094: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_0099: ldloc.s V_4
IL_009b: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)""
IL_00a0: nop
IL_00a1: leave.s IL_00bf
}
IL_00a3: ldarg.0
IL_00a4: ldc.i4.s -2
IL_00a6: stfld ""int C.<F>d__0.<>1__state""
IL_00ab: ldarg.0
IL_00ac: ldnull
IL_00ad: stfld ""C C.<F>d__0.<a2>5__5""
IL_00b2: ldarg.0
IL_00b3: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__0.<>t__builder""
IL_00b8: ldloc.1
IL_00b9: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)""
IL_00be: nop
IL_00bf: ret
}");
// 2 field defs added - variables of G and H changed their types; 4 methods updated: G, H kickoff and MoveNext
CheckEncLogDefinitions(md3.Reader,
Row(13, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(14, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(15, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(16, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(4, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(19, TableIndex.Field, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(20, TableIndex.Field, EditAndContinueOperation.Default),
Row(2, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(3, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(12, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(7, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
}
[Fact]
public void HoistedVariables_Dynamic1()
{
var template = @"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
dynamic <N:0>x = 1</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine((int)x + <<VALUE>>);
}
}
";
var source0 = MarkedSource(template.Replace("<<VALUE>>", "0"));
var source1 = MarkedSource(template.Replace("<<VALUE>>", "1"));
var source2 = MarkedSource(template.Replace("<<VALUE>>", "2"));
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var baselineIL0 = @"
{
// Code size 147 (0x93)
.maxstack 3
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003c
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.1
IL_0022: box ""int""
IL_0027: stfld ""dynamic C.<F>d__0.<x>5__1""
IL_002c: ldarg.0
IL_002d: ldc.i4.1
IL_002e: stfld ""int C.<F>d__0.<>2__current""
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: stfld ""int C.<F>d__0.<>1__state""
IL_003a: ldc.i4.1
IL_003b: ret
IL_003c: ldarg.0
IL_003d: ldc.i4.m1
IL_003e: stfld ""int C.<F>d__0.<>1__state""
IL_0043: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<>o__0.<>p__0""
IL_0048: brfalse.s IL_004c
IL_004a: br.s IL_0071
IL_004c: ldc.i4.s 16
IL_004e: ldtoken ""int""
IL_0053: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0058: ldtoken ""C""
IL_005d: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0062: call ""System.Runtime.CompilerServices.CallSiteBinder Microsoft.CSharp.RuntimeBinder.Binder.Convert(Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags, System.Type, System.Type)""
IL_0067: call ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>>.Create(System.Runtime.CompilerServices.CallSiteBinder)""
IL_006c: stsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<>o__0.<>p__0""
IL_0071: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<>o__0.<>p__0""
IL_0076: ldfld ""System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>>.Target""
IL_007b: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<>o__0.<>p__0""
IL_0080: ldarg.0
IL_0081: ldfld ""dynamic C.<F>d__0.<x>5__1""
IL_0086: callvirt ""int System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>.Invoke(System.Runtime.CompilerServices.CallSite, dynamic)""
IL_008b: call ""void System.Console.WriteLine(int)""
IL_0090: nop
IL_0091: ldc.i4.0
IL_0092: ret
}";
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL0);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
var baselineIL = @"
{
// Code size 149 (0x95)
.maxstack 3
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003c
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.1
IL_0022: box ""int""
IL_0027: stfld ""dynamic C.<F>d__0.<x>5__1""
IL_002c: ldarg.0
IL_002d: ldc.i4.1
IL_002e: stfld ""int C.<F>d__0.<>2__current""
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: stfld ""int C.<F>d__0.<>1__state""
IL_003a: ldc.i4.1
IL_003b: ret
IL_003c: ldarg.0
IL_003d: ldc.i4.m1
IL_003e: stfld ""int C.<F>d__0.<>1__state""
IL_0043: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<<DYNAMIC_CONTAINER_NAME>>.<>p__0""
IL_0048: brfalse.s IL_004c
IL_004a: br.s IL_0071
IL_004c: ldc.i4.s 16
IL_004e: ldtoken ""int""
IL_0053: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0058: ldtoken ""C""
IL_005d: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0062: call ""System.Runtime.CompilerServices.CallSiteBinder Microsoft.CSharp.RuntimeBinder.Binder.Convert(Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags, System.Type, System.Type)""
IL_0067: call ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>>.Create(System.Runtime.CompilerServices.CallSiteBinder)""
IL_006c: stsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<<DYNAMIC_CONTAINER_NAME>>.<>p__0""
IL_0071: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<<DYNAMIC_CONTAINER_NAME>>.<>p__0""
IL_0076: ldfld ""System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>>.Target""
IL_007b: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>> C.<<DYNAMIC_CONTAINER_NAME>>.<>p__0""
IL_0080: ldarg.0
IL_0081: ldfld ""dynamic C.<F>d__0.<x>5__1""
IL_0086: callvirt ""int System.Func<System.Runtime.CompilerServices.CallSite, dynamic, int>.Invoke(System.Runtime.CompilerServices.CallSite, dynamic)""
IL_008b: ldc.i4.<<VALUE>>
IL_008c: add
IL_008d: call ""void System.Console.WriteLine(int)""
IL_0092: nop
IL_0093: ldc.i4.0
IL_0094: ret
}";
diff1.VerifySynthesizedMembers(
"C: {<>o__0#1, <F>d__0}",
"C.<>o__0#1: {<>p__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "1").Replace("<<DYNAMIC_CONTAINER_NAME>>", "<>o__0#1"));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"C: {<>o__0#2, <F>d__0, <>o__0#1}",
"C.<>o__0#1: {<>p__0}",
"C.<>o__0#2: {<>p__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
diff2.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "2").Replace("<<DYNAMIC_CONTAINER_NAME>>", "<>o__0#2"));
}
[Fact]
public void HoistedVariables_Dynamic2()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
private static IEnumerable<string> F()
{
dynamic <N:0>d = ""x""</N:0>;
yield return d;
Console.WriteLine(0);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
private static IEnumerable<string> F()
{
dynamic <N:0>d = ""x""</N:0>;
yield return d.ToString();
Console.WriteLine(1);
}
}
");
var source2 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
private static IEnumerable<string> F()
{
dynamic <N:0>d = ""x""</N:0>;
yield return d;
Console.WriteLine(2);
}
}
");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation0.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifySynthesizedMembers(
"C: {<>o__0#1, <F>d__0}",
"C.<>o__0#1: {<>p__0, <>p__1}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <d>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.String>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.String>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.String>.Current, System.Collections.IEnumerator.Current}");
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"C: {<>o__0#2, <F>d__0, <>o__0#1}",
"C.<>o__0#1: {<>p__0, <>p__1}",
"C.<>o__0#2: {<>p__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <d>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.String>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.String>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.String>.Current, System.Collections.IEnumerator.Current}");
}
[Fact]
public void Awaiters1()
{
var source0 = @"
using System.Threading.Tasks;
class C
{
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<double> A3() => null;
static async Task<int> F()
{
await A1();
await A2();
return 1;
}
static async Task<int> G()
{
await A2();
await A1();
return 1;
}
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All));
CompileAndVerify(compilation0, symbolValidator: module =>
{
Assert.Equal(new[]
{
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<bool>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<int>"
}, module.GetFieldNamesAndTypes("C.<F>d__3"));
Assert.Equal(new[]
{
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<int>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<bool>"
}, module.GetFieldNamesAndTypes("C.<G>d__4"));
});
}
[Theory]
[MemberData(nameof(ExternalPdbFormats))]
public void Awaiters_MultipleGenerations(DebugInformationFormat format)
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<C> A3() => null;
static async Task<int> F() // testing type changes G0 -> G1, G1 -> G2
{
<N:0>await A1()</N:0>;
<N:1>await A2()</N:1>;
return 1;
}
static async Task<int> G() // testing G1 -> G3
{
<N:2>await A1()</N:2>;
return 1;
}
static async Task<int> H() // testing G0 -> G3
{
<N:3>await A1()</N:3>;
return 1;
}
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<C> A3() => null;
static async Task<int> F() // updated
{
<N:0>await A3()</N:0>;
<N:1>await A2()</N:1>;
return 1;
}
static async Task<int> G() // updated
{
<N:2>await A1()</N:2>;
return 2;
}
static async Task<int> H()
{
<N:3>await A1()</N:3>;
return 1;
}
}");
var source2 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<C> A3() => null;
static async Task<int> F() // updated
{
<N:0>await A1()</N:0>;
<N:1>await A3()</N:1>;
return 1;
}
static async Task<int> G()
{
<N:2>await A1()</N:2>;
return 2;
}
static async Task<int> H()
{
<N:3>await A1()</N:3>;
return 1;
}
}");
var source3 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<C> A3() => null;
static async Task<int> F()
{
<N:0>await A1()</N:0>;
<N:1>await A3()</N:1>;
return 1;
}
static async Task<int> G() // updated
{
<N:2>await A3()</N:2>;
return 1;
}
static async Task<int> H() // updated
{
<N:3>await A3()</N:3>;
return 1;
}
}");
// Rude edit but the compiler should handle it.
var compilation0 = CreateCompilationWithMscorlib461(source0.Tree, options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All), assemblyName: "A");
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var compilation3 = compilation2.WithSource(source3.Tree);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var f3 = compilation3.GetMember<MethodSymbol>("C.F");
var g0 = compilation0.GetMember<MethodSymbol>("C.G");
var g1 = compilation1.GetMember<MethodSymbol>("C.G");
var g2 = compilation2.GetMember<MethodSymbol>("C.G");
var g3 = compilation3.GetMember<MethodSymbol>("C.G");
var h0 = compilation0.GetMember<MethodSymbol>("C.H");
var h1 = compilation1.GetMember<MethodSymbol>("C.H");
var h2 = compilation2.GetMember<MethodSymbol>("C.H");
var h3 = compilation3.GetMember<MethodSymbol>("C.H");
var v0 = CompileAndVerify(compilation0, emitOptions: EmitOptions.Default.WithDebugInformationFormat(format), symbolValidator: module =>
{
Assert.Equal(new[]
{
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<bool>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<int>"
}, module.GetFieldNamesAndTypes("C.<F>d__3"));
});
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var syntaxMap1 = GetSyntaxMapFromMarkers(source0, source1);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, syntaxMap1),
SemanticEdit.Create(SemanticEditKind.Update, g0, g1, syntaxMap1)));
diff1.VerifySynthesizedMembers(
"C: {<F>d__3, <G>d__4}",
"C.<F>d__3: {<>1__state, <>t__builder, <>u__3, <>u__2, MoveNext, SetStateMachine}",
"C.<G>d__4: {<>1__state, <>t__builder, <>u__1, MoveNext, SetStateMachine}");
var syntaxMap2 = GetSyntaxMapFromMarkers(source1, source2);
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, syntaxMap2)));
diff2.VerifySynthesizedMembers(
"C: {<F>d__3, <G>d__4}",
"C.<F>d__3: {<>1__state, <>t__builder, <>u__4, <>u__3, MoveNext, SetStateMachine, <>u__2}",
"C.<G>d__4: {<>1__state, <>t__builder, <>u__1, MoveNext, SetStateMachine}");
var syntaxMap3 = GetSyntaxMapFromMarkers(source2, source3);
var diff3 = compilation3.EmitDifference(
diff2.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, g2, g3, syntaxMap3),
SemanticEdit.Create(SemanticEditKind.Update, h2, h3, syntaxMap3)));
diff3.VerifySynthesizedMembers(
"C: {<G>d__4, <H>d__5, <F>d__3}",
"C.<G>d__4: {<>1__state, <>t__builder, <>u__2, MoveNext, SetStateMachine, <>u__1}",
"C.<H>d__5: {<>1__state, <>t__builder, <>u__2, MoveNext, SetStateMachine}",
"C.<F>d__3: {<>1__state, <>t__builder, <>u__4, <>u__3, MoveNext, SetStateMachine, <>u__2}");
// Verify delta metadata contains expected rows.
var md1 = diff1.GetMetadata();
var md2 = diff2.GetMetadata();
var md3 = diff3.GetMetadata();
diff1.VerifyPdb(new[] { MetadataTokens.MethodDefinitionHandle(9) }, @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method token=""0x6000009"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x7"" hidden=""true"" document=""1"" />
<entry offset=""0x19"" startLine=""11"" startColumn=""5"" endLine=""11"" endColumn=""6"" document=""1"" />
<entry offset=""0x1a"" startLine=""12"" startColumn=""14"" endLine=""12"" endColumn=""31"" document=""1"" />
<entry offset=""0x25"" hidden=""true"" document=""1"" />
<entry offset=""0x79"" startLine=""13"" startColumn=""14"" endLine=""13"" endColumn=""31"" document=""1"" />
<entry offset=""0x85"" hidden=""true"" document=""1"" />
<entry offset=""0xd8"" startLine=""14"" startColumn=""9"" endLine=""14"" endColumn=""18"" document=""1"" />
<entry offset=""0xdc"" hidden=""true"" document=""1"" />
<entry offset=""0xf6"" startLine=""15"" startColumn=""5"" endLine=""15"" endColumn=""6"" document=""1"" />
<entry offset=""0xfe"" hidden=""true"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x10c"">
<namespace name=""System.Threading.Tasks"" />
</scope>
<asyncInfo>
<kickoffMethod token=""0x6000004"" />
<await yield=""0x37"" resume=""0x55"" token=""0x6000009"" />
<await yield=""0x97"" resume=""0xb3"" token=""0x6000009"" />
</asyncInfo>
</method>
</methods>
</symbols>");
// 1 field def added & 4 methods updated (MoveNext and kickoff for F and G)
CheckEncLogDefinitions(md1.Reader,
Row(7, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(8, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(9, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(10, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(11, TableIndex.Field, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(12, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
// Note that the new awaiter is allocated slot <>u__3 since <>u__1 and <>u__2 are taken.
diff1.VerifyIL("C.<F>d__3.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 268 (0x10c)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter<C> V_2,
C.<F>d__3 V_3,
System.Runtime.CompilerServices.TaskAwaiter<int> V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__3.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0055
IL_0014: br IL_00b3
IL_0019: nop
IL_001a: call ""System.Threading.Tasks.Task<C> C.A3()""
IL_001f: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<C> System.Threading.Tasks.Task<C>.GetAwaiter()""
IL_0024: stloc.2
IL_0025: ldloca.s V_2
IL_0027: call ""bool System.Runtime.CompilerServices.TaskAwaiter<C>.IsCompleted.get""
IL_002c: brtrue.s IL_0071
IL_002e: ldarg.0
IL_002f: ldc.i4.0
IL_0030: dup
IL_0031: stloc.0
IL_0032: stfld ""int C.<F>d__3.<>1__state""
IL_0037: ldarg.0
IL_0038: ldloc.2
IL_0039: stfld ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_003e: ldarg.0
IL_003f: stloc.3
IL_0040: ldarg.0
IL_0041: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_0046: ldloca.s V_2
IL_0048: ldloca.s V_3
IL_004a: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<C>, C.<F>d__3>(ref System.Runtime.CompilerServices.TaskAwaiter<C>, ref C.<F>d__3)""
IL_004f: nop
IL_0050: leave IL_010b
IL_0055: ldarg.0
IL_0056: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_005b: stloc.2
IL_005c: ldarg.0
IL_005d: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_0062: initobj ""System.Runtime.CompilerServices.TaskAwaiter<C>""
IL_0068: ldarg.0
IL_0069: ldc.i4.m1
IL_006a: dup
IL_006b: stloc.0
IL_006c: stfld ""int C.<F>d__3.<>1__state""
IL_0071: ldloca.s V_2
IL_0073: call ""C System.Runtime.CompilerServices.TaskAwaiter<C>.GetResult()""
IL_0078: pop
IL_0079: call ""System.Threading.Tasks.Task<int> C.A2()""
IL_007e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<int> System.Threading.Tasks.Task<int>.GetAwaiter()""
IL_0083: stloc.s V_4
IL_0085: ldloca.s V_4
IL_0087: call ""bool System.Runtime.CompilerServices.TaskAwaiter<int>.IsCompleted.get""
IL_008c: brtrue.s IL_00d0
IL_008e: ldarg.0
IL_008f: ldc.i4.1
IL_0090: dup
IL_0091: stloc.0
IL_0092: stfld ""int C.<F>d__3.<>1__state""
IL_0097: ldarg.0
IL_0098: ldloc.s V_4
IL_009a: stfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__3.<>u__2""
IL_009f: ldarg.0
IL_00a0: stloc.3
IL_00a1: ldarg.0
IL_00a2: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_00a7: ldloca.s V_4
IL_00a9: ldloca.s V_3
IL_00ab: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<int>, C.<F>d__3>(ref System.Runtime.CompilerServices.TaskAwaiter<int>, ref C.<F>d__3)""
IL_00b0: nop
IL_00b1: leave.s IL_010b
IL_00b3: ldarg.0
IL_00b4: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__3.<>u__2""
IL_00b9: stloc.s V_4
IL_00bb: ldarg.0
IL_00bc: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<int> C.<F>d__3.<>u__2""
IL_00c1: initobj ""System.Runtime.CompilerServices.TaskAwaiter<int>""
IL_00c7: ldarg.0
IL_00c8: ldc.i4.m1
IL_00c9: dup
IL_00ca: stloc.0
IL_00cb: stfld ""int C.<F>d__3.<>1__state""
IL_00d0: ldloca.s V_4
IL_00d2: call ""int System.Runtime.CompilerServices.TaskAwaiter<int>.GetResult()""
IL_00d7: pop
IL_00d8: ldc.i4.1
IL_00d9: stloc.1
IL_00da: leave.s IL_00f6
}
catch System.Exception
{
IL_00dc: stloc.s V_5
IL_00de: ldarg.0
IL_00df: ldc.i4.s -2
IL_00e1: stfld ""int C.<F>d__3.<>1__state""
IL_00e6: ldarg.0
IL_00e7: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_00ec: ldloc.s V_5
IL_00ee: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)""
IL_00f3: nop
IL_00f4: leave.s IL_010b
}
IL_00f6: ldarg.0
IL_00f7: ldc.i4.s -2
IL_00f9: stfld ""int C.<F>d__3.<>1__state""
IL_00fe: ldarg.0
IL_00ff: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_0104: ldloc.1
IL_0105: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)""
IL_010a: nop
IL_010b: ret
}");
// 1 field def added & 2 methods updated
CheckEncLogDefinitions(md2.Reader,
Row(11, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(12, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(3, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(12, TableIndex.Field, EditAndContinueOperation.Default),
Row(4, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(9, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(6, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff2.VerifyPdb(new[] { MetadataTokens.MethodDefinitionHandle(9) }, @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method token=""0x6000009"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x7"" hidden=""true"" document=""1"" />
<entry offset=""0x19"" startLine=""11"" startColumn=""5"" endLine=""11"" endColumn=""6"" document=""1"" />
<entry offset=""0x1a"" startLine=""12"" startColumn=""14"" endLine=""12"" endColumn=""31"" document=""1"" />
<entry offset=""0x25"" hidden=""true"" document=""1"" />
<entry offset=""0x79"" startLine=""13"" startColumn=""14"" endLine=""13"" endColumn=""31"" document=""1"" />
<entry offset=""0x85"" hidden=""true"" document=""1"" />
<entry offset=""0xd8"" startLine=""14"" startColumn=""9"" endLine=""14"" endColumn=""18"" document=""1"" />
<entry offset=""0xdc"" hidden=""true"" document=""1"" />
<entry offset=""0xf6"" startLine=""15"" startColumn=""5"" endLine=""15"" endColumn=""6"" document=""1"" />
<entry offset=""0xfe"" hidden=""true"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x10c"">
<namespace name=""System.Threading.Tasks"" />
</scope>
<asyncInfo>
<kickoffMethod token=""0x6000004"" />
<await yield=""0x37"" resume=""0x55"" token=""0x6000009"" />
<await yield=""0x97"" resume=""0xb3"" token=""0x6000009"" />
</asyncInfo>
</method>
</methods>
</symbols>");
// Note that the new awaiters are allocated slots <>u__4, <>u__5.
diff2.VerifyIL("C.<F>d__3.System.Runtime.CompilerServices.IAsyncStateMachine.MoveNext", @"
{
// Code size 268 (0x10c)
.maxstack 3
.locals init (int V_0,
int V_1,
System.Runtime.CompilerServices.TaskAwaiter<bool> V_2,
C.<F>d__3 V_3,
System.Runtime.CompilerServices.TaskAwaiter<C> V_4,
System.Exception V_5)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__3.<>1__state""
IL_0006: stloc.0
.try
{
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_0055
IL_0014: br IL_00b3
IL_0019: nop
IL_001a: call ""System.Threading.Tasks.Task<bool> C.A1()""
IL_001f: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<bool> System.Threading.Tasks.Task<bool>.GetAwaiter()""
IL_0024: stloc.2
IL_0025: ldloca.s V_2
IL_0027: call ""bool System.Runtime.CompilerServices.TaskAwaiter<bool>.IsCompleted.get""
IL_002c: brtrue.s IL_0071
IL_002e: ldarg.0
IL_002f: ldc.i4.0
IL_0030: dup
IL_0031: stloc.0
IL_0032: stfld ""int C.<F>d__3.<>1__state""
IL_0037: ldarg.0
IL_0038: ldloc.2
IL_0039: stfld ""System.Runtime.CompilerServices.TaskAwaiter<bool> C.<F>d__3.<>u__4""
IL_003e: ldarg.0
IL_003f: stloc.3
IL_0040: ldarg.0
IL_0041: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_0046: ldloca.s V_2
IL_0048: ldloca.s V_3
IL_004a: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<bool>, C.<F>d__3>(ref System.Runtime.CompilerServices.TaskAwaiter<bool>, ref C.<F>d__3)""
IL_004f: nop
IL_0050: leave IL_010b
IL_0055: ldarg.0
IL_0056: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<bool> C.<F>d__3.<>u__4""
IL_005b: stloc.2
IL_005c: ldarg.0
IL_005d: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<bool> C.<F>d__3.<>u__4""
IL_0062: initobj ""System.Runtime.CompilerServices.TaskAwaiter<bool>""
IL_0068: ldarg.0
IL_0069: ldc.i4.m1
IL_006a: dup
IL_006b: stloc.0
IL_006c: stfld ""int C.<F>d__3.<>1__state""
IL_0071: ldloca.s V_2
IL_0073: call ""bool System.Runtime.CompilerServices.TaskAwaiter<bool>.GetResult()""
IL_0078: pop
IL_0079: call ""System.Threading.Tasks.Task<C> C.A3()""
IL_007e: callvirt ""System.Runtime.CompilerServices.TaskAwaiter<C> System.Threading.Tasks.Task<C>.GetAwaiter()""
IL_0083: stloc.s V_4
IL_0085: ldloca.s V_4
IL_0087: call ""bool System.Runtime.CompilerServices.TaskAwaiter<C>.IsCompleted.get""
IL_008c: brtrue.s IL_00d0
IL_008e: ldarg.0
IL_008f: ldc.i4.1
IL_0090: dup
IL_0091: stloc.0
IL_0092: stfld ""int C.<F>d__3.<>1__state""
IL_0097: ldarg.0
IL_0098: ldloc.s V_4
IL_009a: stfld ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_009f: ldarg.0
IL_00a0: stloc.3
IL_00a1: ldarg.0
IL_00a2: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_00a7: ldloca.s V_4
IL_00a9: ldloca.s V_3
IL_00ab: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.TaskAwaiter<C>, C.<F>d__3>(ref System.Runtime.CompilerServices.TaskAwaiter<C>, ref C.<F>d__3)""
IL_00b0: nop
IL_00b1: leave.s IL_010b
IL_00b3: ldarg.0
IL_00b4: ldfld ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_00b9: stloc.s V_4
IL_00bb: ldarg.0
IL_00bc: ldflda ""System.Runtime.CompilerServices.TaskAwaiter<C> C.<F>d__3.<>u__3""
IL_00c1: initobj ""System.Runtime.CompilerServices.TaskAwaiter<C>""
IL_00c7: ldarg.0
IL_00c8: ldc.i4.m1
IL_00c9: dup
IL_00ca: stloc.0
IL_00cb: stfld ""int C.<F>d__3.<>1__state""
IL_00d0: ldloca.s V_4
IL_00d2: call ""C System.Runtime.CompilerServices.TaskAwaiter<C>.GetResult()""
IL_00d7: pop
IL_00d8: ldc.i4.1
IL_00d9: stloc.1
IL_00da: leave.s IL_00f6
}
catch System.Exception
{
IL_00dc: stloc.s V_5
IL_00de: ldarg.0
IL_00df: ldc.i4.s -2
IL_00e1: stfld ""int C.<F>d__3.<>1__state""
IL_00e6: ldarg.0
IL_00e7: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_00ec: ldloc.s V_5
IL_00ee: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetException(System.Exception)""
IL_00f3: nop
IL_00f4: leave.s IL_010b
}
IL_00f6: ldarg.0
IL_00f7: ldc.i4.s -2
IL_00f9: stfld ""int C.<F>d__3.<>1__state""
IL_00fe: ldarg.0
IL_00ff: ldflda ""System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int> C.<F>d__3.<>t__builder""
IL_0104: ldloc.1
IL_0105: call ""void System.Runtime.CompilerServices.AsyncTaskMethodBuilder<int>.SetResult(int)""
IL_010a: nop
IL_010b: ret
}");
// 2 field defs added - G and H awaiters & 4 methods updated: G, H kickoff and MoveNext
CheckEncLogDefinitions(md3.Reader,
Row(13, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(14, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(15, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(16, TableIndex.StandAloneSig, EditAndContinueOperation.Default),
Row(4, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(13, TableIndex.Field, EditAndContinueOperation.Default),
Row(5, TableIndex.TypeDef, EditAndContinueOperation.AddField),
Row(14, TableIndex.Field, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(6, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(12, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(15, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(8, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(9, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(11, TableIndex.CustomAttribute, EditAndContinueOperation.Default),
Row(12, TableIndex.CustomAttribute, EditAndContinueOperation.Default));
diff3.VerifyPdb(new[] { MetadataTokens.MethodDefinitionHandle(15) }, @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method token=""0x600000f"">
<customDebugInfo>
<forward token=""0x600000c"" />
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" hidden=""true"" document=""1"" />
<entry offset=""0x7"" hidden=""true"" document=""1"" />
<entry offset=""0xe"" startLine=""24"" startColumn=""5"" endLine=""24"" endColumn=""6"" document=""1"" />
<entry offset=""0xf"" startLine=""25"" startColumn=""14"" endLine=""25"" endColumn=""31"" document=""1"" />
<entry offset=""0x1a"" hidden=""true"" document=""1"" />
<entry offset=""0x6b"" startLine=""26"" startColumn=""9"" endLine=""26"" endColumn=""18"" document=""1"" />
<entry offset=""0x6f"" hidden=""true"" document=""1"" />
<entry offset=""0x89"" startLine=""27"" startColumn=""5"" endLine=""27"" endColumn=""6"" document=""1"" />
<entry offset=""0x91"" hidden=""true"" document=""1"" />
</sequencePoints>
<asyncInfo>
<kickoffMethod token=""0x6000006"" />
<await yield=""0x2c"" resume=""0x47"" token=""0x600000f"" />
</asyncInfo>
</method>
</methods>
</symbols>");
}
[Fact]
public void SynthesizedMembersMerging()
{
var source0 = @"
using System.Collections.Generic;
public class C
{
}";
var source1 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F()
{
yield return 1;
yield return 2;
}
}";
var source2 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F()
{
yield return 1;
yield return 3;
}
}";
var source3 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F()
{
yield return 1;
yield return 3;
}
public static void G()
{
System.Console.WriteLine(1);
}
}";
var source4 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F()
{
yield return 1;
yield return 3;
}
public static void G()
{
System.Console.WriteLine(1);
}
public static IEnumerable<int> H()
{
yield return 1;
}
}";
// Rude edit but the compiler should handle it.
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All), assemblyName: "A");
var compilation1 = compilation0.WithSource(source1);
var compilation2 = compilation1.WithSource(source2);
var compilation3 = compilation2.WithSource(source3);
var compilation4 = compilation3.WithSource(source4);
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var f3 = compilation3.GetMember<MethodSymbol>("C.F");
var g3 = compilation3.GetMember<MethodSymbol>("C.G");
var h4 = compilation4.GetMember<MethodSymbol>("C.H");
var v0 = CompileAndVerify(compilation0);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, f1)));
diff1.VerifySynthesizedMembers(
"C: {<F>d__0#1}",
"C.<F>d__0#1: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapByKind(f1, SyntaxKind.Block))));
diff2.VerifySynthesizedMembers(
"C: {<F>d__0#1}",
"C.<F>d__0#1: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
var diff3 = compilation3.EmitDifference(
diff2.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, g3)));
diff3.VerifySynthesizedMembers(
"C: {<F>d__0#1}",
"C.<F>d__0#1: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
var diff4 = compilation4.EmitDifference(
diff3.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, h4)));
diff4.VerifySynthesizedMembers(
"C: {<H>d__2#4, <F>d__0#1}",
"C.<F>d__0#1: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"C.<H>d__2#4: {<>1__state, <>2__current, <>l__initialThreadId, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
}
[Fact]
public void UniqueSynthesizedNames()
{
var source0 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F() { yield return 1; }
}";
var source1 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F(int a) { yield return 2; }
public static IEnumerable<int> F() { yield return 1; }
}";
var source2 = @"
using System.Collections.Generic;
public class C
{
public static IEnumerable<int> F(int a) { yield return 2; }
public static IEnumerable<int> F(byte a) { yield return 3; }
public static IEnumerable<int> F() { yield return 1; }
}";
var compilation0 = CreateCompilationWithMscorlib461(source0, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All), assemblyName: "A");
var compilation1 = compilation0.WithSource(source1);
var compilation2 = compilation1.WithSource(source2);
var f_int1 = compilation1.GetMembers("C.F").Single(m => m.ToString() == "C.F(int)");
var f_byte2 = compilation2.GetMembers("C.F").Single(m => m.ToString() == "C.F(byte)");
var v0 = CompileAndVerify(compilation0);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, f_int1)));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, f_byte2)));
var reader0 = md0.MetadataReader;
var reader1 = diff1.GetMetadata().Reader;
var reader2 = diff2.GetMetadata().Reader;
CheckNames(reader0, reader0.GetTypeDefNames(), "<Module>", "C", "<F>d__0");
CheckNames(new[] { reader0, reader1 }, reader1.GetTypeDefNames(), "<F>d__0#1");
CheckNames(new[] { reader0, reader1, reader2 }, reader2.GetTypeDefNames(), "<F>d__1#2");
}
[Fact]
public void AsyncLambda_Update()
{
var source0 = MarkedSource(
@"using System;
using System.Threading.Tasks;
class C
{
static void F()
{
Func<Task> <N:0>g1 = <N:1>async () =>
{
await A1();
await A2();
}</N:1></N:0>;
}
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<double> A3() => null;
}");
var source1 = MarkedSource(
@"using System;
using System.Threading.Tasks;
class C
{
static int G() => 1;
static void F()
{
Func<Task> <N:0>g1 = <N:1>async () =>
{
await A2();
await A1();
}</N:1></N:0>;
}
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<double> A3() => null;
}");
var source2 = MarkedSource(
@"using System;
using System.Threading.Tasks;
class C
{
static int G() => 1;
static void F()
{
Func<Task> <N:0>g1 = <N:1>async () =>
{
await A1();
await A2();
}</N:1></N:0>;
}
static Task<bool> A1() => null;
static Task<int> A2() => null;
static Task<double> A3() => null;
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All));
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0, symbolValidator: module =>
{
Assert.Equal(new[]
{
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder",
"<>4__this: C.<>c",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<bool>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<int>"
}, module.GetFieldNamesAndTypes("C.<>c.<<F>b__0_0>d"));
});
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
// note that the types of the awaiter fields <>u__1, <>u__2 are the same as in the previous generation:
diff1.VerifySynthesizedFields("C.<>c.<<F>b__0_0>d",
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder",
"<>4__this: C.<>c",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<bool>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<int>");
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
// note that the types of the awaiter fields <>u__1, <>u__2 are the same as in the previous generation:
diff2.VerifySynthesizedFields("C.<>c.<<F>b__0_0>d",
"<>1__state: int",
"<>t__builder: System.Runtime.CompilerServices.AsyncTaskMethodBuilder",
"<>4__this: C.<>c",
"<>u__1: System.Runtime.CompilerServices.TaskAwaiter<bool>",
"<>u__2: System.Runtime.CompilerServices.TaskAwaiter<int>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/72887")]
[WorkItem("https://github.com/dotnet/roslyn/issues/72887")]
public void AsyncLambda_Delete()
{
using var _ = new EditAndContinueTest()
.AddBaseline("""
using System.Threading.Tasks;
class C
{
static void F()
{
Task.Run(async () =>
{
await Task.FromResult(1);
});
}
}
""")
.AddGeneration("""
using System.Threading.Tasks;
class C
{
static void F()
{
}
}
""",
edits:
[
Edit(SemanticEditKind.Update, c => c.GetMember("C.F"), preserveLocalVariables: true),
],
validator: v =>
{
v.VerifySynthesizedMembers();
v.VerifyMethodDefNames("F", "<F>b__1_0", "MoveNext");
v.VerifyEncLogDefinitions(
[
Row(1, TableIndex.MethodDef, EditAndContinueOperation.Default),
Row(5, TableIndex.MethodDef, EditAndContinueOperation.Default)
]);
v.VerifyIL("""
{
// Code size 2 (0x2)
.maxstack 8
IL_0000: nop
IL_0001: ret
}
{
// Code size 11 (0xb)
.maxstack 8
IL_0000: ldstr 0x70000005
IL_0005: newobj 0x0A000017
IL_000a: throw
}
{
// Code size 11 (0xb)
.maxstack 8
IL_0000: ldstr 0x70000005
IL_0005: newobj 0x0A000017
IL_000a: throw
}
""");
})
.Verify();
}
[Fact, WorkItem(63294, "https://github.com/dotnet/roslyn/issues/63294")]
public void LiftedClosure()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
static class C
{
static async Task M()
<N:0>{
int <N:1>num</N:1> = 1;
F();
<N:2>await Task.Delay(1)</N:2>;
<N:3>int F() => num;</N:3>
}</N:0>
}");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
static class C
{
static async Task M()
<N:0>{
int <N:1>num</N:1> = 1;
F();
<N:2>await Task.Delay(2)</N:2>;
<N:3>int F() => num;</N:3>
}</N:0>
}");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var m0 = compilation0.GetMember<MethodSymbol>("C.M");
var m1 = compilation1.GetMember<MethodSymbol>("C.M");
var v0 = CompileAndVerify(compilation0);
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var reader0 = md0.MetadataReader;
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
// Notice encLocalSlotMap CDI on both M and MoveNext methods.
// The former is used to calculate mapping for variables lifted to fields of the state machine,
// the latter is used to map local variable slots in the MoveNext method.
// Here, the variable lifted to the state machine field is the closure pointer storage.
v0.VerifyPdb(@"
<symbols>
<methods>
<method containingType=""C"" name=""M"">
<customDebugInfo>
<forwardIterator name=""<M>d__0"" />
<encLocalSlotMap>
<slot kind=""30"" offset=""0"" />
</encLocalSlotMap>
<encLambdaMap>
<methodOrdinal>0</methodOrdinal>
<closure offset=""0"" />
<lambda offset=""167"" />
</encLambdaMap>
<encStateMachineStateMap>
<state number=""0"" offset=""89"" />
</encStateMachineStateMap>
</customDebugInfo>
</method>
<method containingType=""C"" name=""<M>g__F|0_0"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
</method>
<method containingType=""C+<M>d__0"" name=""MoveNext"">
<customDebugInfo>
<forward declaringType=""C"" methodName=""<M>g__F|0_0"" />
<hoistedLocalScopes>
<slot startOffset=""0x0"" endOffset=""0xb4"" />
</hoistedLocalScopes>
<encLocalSlotMap>
<slot kind=""27"" offset=""0"" />
<slot kind=""33"" offset=""89"" />
<slot kind=""temp"" />
<slot kind=""temp"" />
</encLocalSlotMap>
</customDebugInfo>
<asyncInfo>
<kickoffMethod declaringType=""C"" methodName=""M"" />
<await yield=""0x45"" resume=""0x60"" declaringType=""C+<M>d__0"" methodName=""MoveNext"" />
</asyncInfo>
</method>
</methods>
</symbols>
", options: PdbValidationOptions.ExcludeDocuments | PdbValidationOptions.ExcludeSequencePoints | PdbValidationOptions.ExcludeNamespaces | PdbValidationOptions.ExcludeScopes);
CheckNames(reader0, reader0.GetTypeDefNames(), "<Module>", "C", "<>c__DisplayClass0_0", "<M>d__0");
CheckNames(reader0, reader0.GetFieldDefNames(), "num", "<>1__state", "<>t__builder", "<>8__1", "<>u__1");
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, m0, m1, GetSyntaxMapFromMarkers(source0, source1))));
// Notice that we reused field "<>8__1" (there is no "<>8__2"), which stores the local function closure pointer.
diff1.VerifySynthesizedMembers(
"C: {<M>g__F|0_0, <>c__DisplayClass0_0, <M>d__0}",
"C.<M>d__0: {<>1__state, <>t__builder, <>8__1, <>u__1, MoveNext, SetStateMachine}",
"C.<>c__DisplayClass0_0: {num}");
}
[Fact, WorkItem(1170899, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1170899")]
public void HoistedAnonymousTypes1()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new { A = 1 }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.A + 1);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new { A = 1 }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.A + 2);
}
}
");
var source2 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new { A = 1 }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.A + 3);
}
}
");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
using var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var reader0 = md0.MetadataReader;
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var baselineIL = @"
{
// Code size 88 (0x58)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003c
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.1
IL_0022: newobj ""<>f__AnonymousType0<int>..ctor(int)""
IL_0027: stfld ""<anonymous type: int A> C.<F>d__0.<x>5__1""
IL_002c: ldarg.0
IL_002d: ldc.i4.1
IL_002e: stfld ""int C.<F>d__0.<>2__current""
IL_0033: ldarg.0
IL_0034: ldc.i4.1
IL_0035: stfld ""int C.<F>d__0.<>1__state""
IL_003a: ldc.i4.1
IL_003b: ret
IL_003c: ldarg.0
IL_003d: ldc.i4.m1
IL_003e: stfld ""int C.<F>d__0.<>1__state""
IL_0043: ldarg.0
IL_0044: ldfld ""<anonymous type: int A> C.<F>d__0.<x>5__1""
IL_0049: callvirt ""int <>f__AnonymousType0<int>.A.get""
IL_004e: ldc.i4.<<VALUE>>
IL_004f: add
IL_0050: call ""void System.Console.WriteLine(int)""
IL_0055: nop
IL_0056: ldc.i4.0
IL_0057: ret
}";
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "1"));
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
using var md1 = diff1.GetMetadata();
var reader1 = md1.Reader;
var readers = new[] { reader0, reader1 };
CheckNames(readers, diff1.EmitResult.UpdatedMethods, "MoveNext");
CheckNames(readers, diff1.EmitResult.ChangedTypes, "C", "<F>d__0");
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "2"));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
using var md2 = diff2.GetMetadata();
var reader2 = md2.Reader;
readers = new[] { reader0, reader1, reader2 };
CheckNames(readers, diff2.EmitResult.UpdatedMethods, "MoveNext");
CheckNames(readers, diff2.EmitResult.ChangedTypes, "C", "<F>d__0");
diff2.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
diff2.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "3"));
}
[Fact, WorkItem(3192, "https://github.com/dotnet/roslyn/issues/3192")]
public void HoistedAnonymousTypes_Nested()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new[] { new { A = new { B = 1 } } }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x[0].A.B + 1);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new[] { new { A = new { B = 1 } } }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x[0].A.B + 2);
}
}
");
var source2 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new[] { new { A = new { B = 1 } } }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x[0].A.B + 3);
}
}
");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var baselineIL = @"
{
// Code size 109 (0x6d)
.maxstack 5
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_004a
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldc.i4.1
IL_0022: newarr ""<>f__AnonymousType0<<anonymous type: int B>>""
IL_0027: dup
IL_0028: ldc.i4.0
IL_0029: ldc.i4.1
IL_002a: newobj ""<>f__AnonymousType1<int>..ctor(int)""
IL_002f: newobj ""<>f__AnonymousType0<<anonymous type: int B>>..ctor(<anonymous type: int B>)""
IL_0034: stelem.ref
IL_0035: stfld ""<anonymous type: <anonymous type: int B> A>[] C.<F>d__0.<x>5__1""
IL_003a: ldarg.0
IL_003b: ldc.i4.1
IL_003c: stfld ""int C.<F>d__0.<>2__current""
IL_0041: ldarg.0
IL_0042: ldc.i4.1
IL_0043: stfld ""int C.<F>d__0.<>1__state""
IL_0048: ldc.i4.1
IL_0049: ret
IL_004a: ldarg.0
IL_004b: ldc.i4.m1
IL_004c: stfld ""int C.<F>d__0.<>1__state""
IL_0051: ldarg.0
IL_0052: ldfld ""<anonymous type: <anonymous type: int B> A>[] C.<F>d__0.<x>5__1""
IL_0057: ldc.i4.0
IL_0058: ldelem.ref
IL_0059: callvirt ""<anonymous type: int B> <>f__AnonymousType0<<anonymous type: int B>>.A.get""
IL_005e: callvirt ""int <>f__AnonymousType1<int>.B.get""
IL_0063: ldc.i4.<<VALUE>>
IL_0064: add
IL_0065: call ""void System.Console.WriteLine(int)""
IL_006a: nop
IL_006b: ldc.i4.0
IL_006c: ret
}";
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "1"));
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType1<<B>j__TPar>: {Equals, GetHashCode, ToString}");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "2"));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType1<<B>j__TPar>: {Equals, GetHashCode, ToString}");
diff2.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "3"));
}
[Fact, WorkItem(3192, "https://github.com/dotnet/roslyn/issues/3192")]
public void HoistedGenericTypes()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class Z<T1>
{
public class S<T2> { public T1 a = default(T1); public T2 b = default(T2); }
}
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new Z<double>.S<int>()</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.a + x.b + 1);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class Z<T1>
{
public class S<T2> { public T1 a = default(T1); public T2 b = default(T2); }
}
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new Z<double>.S<int>()</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.a + x.b + 2);
}
}
");
var source2 = MarkedSource(@"
using System;
using System.Collections.Generic;
class Z<T1>
{
public class S<T2> { public T1 a = default(T1); public T2 b = default(T2); }
}
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new Z<double>.S<int>()</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.a + x.b + 3);
}
}
");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var baselineIL = @"
{
// Code size 108 (0x6c)
.maxstack 2
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003b
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: newobj ""Z<double>.S<int>..ctor()""
IL_0026: stfld ""Z<double>.S<int> C.<F>d__0.<x>5__1""
IL_002b: ldarg.0
IL_002c: ldc.i4.1
IL_002d: stfld ""int C.<F>d__0.<>2__current""
IL_0032: ldarg.0
IL_0033: ldc.i4.1
IL_0034: stfld ""int C.<F>d__0.<>1__state""
IL_0039: ldc.i4.1
IL_003a: ret
IL_003b: ldarg.0
IL_003c: ldc.i4.m1
IL_003d: stfld ""int C.<F>d__0.<>1__state""
IL_0042: ldarg.0
IL_0043: ldfld ""Z<double>.S<int> C.<F>d__0.<x>5__1""
IL_0048: ldfld ""double Z<double>.S<int>.a""
IL_004d: ldarg.0
IL_004e: ldfld ""Z<double>.S<int> C.<F>d__0.<x>5__1""
IL_0053: ldfld ""int Z<double>.S<int>.b""
IL_0058: conv.r8
IL_0059: add
IL_005a: ldc.r8 <<VALUE>>
IL_0063: add
IL_0064: call ""void System.Console.WriteLine(double)""
IL_0069: nop
IL_006a: ldc.i4.0
IL_006b: ret
}";
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "1"));
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "2"));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}");
diff2.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "3"));
}
[Fact]
public void HoistedAnonymousTypes_Dynamic()
{
var template = @"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
var <N:0>x = new { A = (dynamic)null, B = 1 }</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(x.B + <<VALUE>>);
}
}
";
var source0 = MarkedSource(template.Replace("<<VALUE>>", "0"));
var source1 = MarkedSource(template.Replace("<<VALUE>>", "1"));
var source2 = MarkedSource(template.Replace("<<VALUE>>", "2"));
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var baselineIL0 = @"
{
// Code size 87 (0x57)
.maxstack 3
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003d
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldnull
IL_0022: ldc.i4.1
IL_0023: newobj ""<>f__AnonymousType0<dynamic, int>..ctor(dynamic, int)""
IL_0028: stfld ""<anonymous type: dynamic A, int B> C.<F>d__0.<x>5__1""
IL_002d: ldarg.0
IL_002e: ldc.i4.1
IL_002f: stfld ""int C.<F>d__0.<>2__current""
IL_0034: ldarg.0
IL_0035: ldc.i4.1
IL_0036: stfld ""int C.<F>d__0.<>1__state""
IL_003b: ldc.i4.1
IL_003c: ret
IL_003d: ldarg.0
IL_003e: ldc.i4.m1
IL_003f: stfld ""int C.<F>d__0.<>1__state""
IL_0044: ldarg.0
IL_0045: ldfld ""<anonymous type: dynamic A, int B> C.<F>d__0.<x>5__1""
IL_004a: callvirt ""int <>f__AnonymousType0<dynamic, int>.B.get""
IL_004f: call ""void System.Console.WriteLine(int)""
IL_0054: nop
IL_0055: ldc.i4.0
IL_0056: ret
}";
v0.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL0);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
var baselineIL = @"
{
// Code size 89 (0x59)
.maxstack 3
.locals init (int V_0)
IL_0000: ldarg.0
IL_0001: ldfld ""int C.<F>d__0.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0016
IL_0012: br.s IL_0018
IL_0014: br.s IL_003d
IL_0016: ldc.i4.0
IL_0017: ret
IL_0018: ldarg.0
IL_0019: ldc.i4.m1
IL_001a: stfld ""int C.<F>d__0.<>1__state""
IL_001f: nop
IL_0020: ldarg.0
IL_0021: ldnull
IL_0022: ldc.i4.1
IL_0023: newobj ""<>f__AnonymousType0<dynamic, int>..ctor(dynamic, int)""
IL_0028: stfld ""<anonymous type: dynamic A, int B> C.<F>d__0.<x>5__1""
IL_002d: ldarg.0
IL_002e: ldc.i4.1
IL_002f: stfld ""int C.<F>d__0.<>2__current""
IL_0034: ldarg.0
IL_0035: ldc.i4.1
IL_0036: stfld ""int C.<F>d__0.<>1__state""
IL_003b: ldc.i4.1
IL_003c: ret
IL_003d: ldarg.0
IL_003e: ldc.i4.m1
IL_003f: stfld ""int C.<F>d__0.<>1__state""
IL_0044: ldarg.0
IL_0045: ldfld ""<anonymous type: dynamic A, int B> C.<F>d__0.<x>5__1""
IL_004a: callvirt ""int <>f__AnonymousType0<dynamic, int>.B.get""
IL_004f: ldc.i4.<<VALUE>>
IL_0050: add
IL_0051: call ""void System.Console.WriteLine(int)""
IL_0056: nop
IL_0057: ldc.i4.0
IL_0058: ret
}";
diff1.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar, <B>j__TPar>: {Equals, GetHashCode, ToString}");
diff1.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "1"));
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"C: {<F>d__0}",
"C.<F>d__0: {<>1__state, <>2__current, <>l__initialThreadId, <>4__this, <x>5__1, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.Int32>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.Int32>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.Int32>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType0<<A>j__TPar, <B>j__TPar>: {Equals, GetHashCode, ToString}");
diff2.VerifyIL("C.<F>d__0.System.Collections.IEnumerator.MoveNext()", baselineIL.Replace("<<VALUE>>", "2"));
}
[Fact, WorkItem(3192, "https://github.com/dotnet/roslyn/issues/3192")]
public void HoistedAnonymousTypes_Delete()
{
var source0 = MarkedSource(@"
using System.Linq;
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
var <N:1>x = from b in new[] { 1, 2, 3 } <N:0>select new { A = b }</N:0></N:1>;
return <N:2>await Task.FromResult(1)</N:2>;
}
}
");
var source1 = MarkedSource(@"
using System.Linq;
using System.Threading.Tasks;
class C
{
static async Task<int> F()
{
var <N:1>x = from b in new[] { 1, 2, 3 } <N:0>select new { A = b }</N:0></N:1>;
var y = x.First();
return <N:2>await Task.FromResult(1)</N:2>;
}
}
");
var source2 = source0;
var source3 = source1;
var source4 = source0;
var source5 = source1;
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation0.WithSource(source2.Tree);
var compilation3 = compilation0.WithSource(source3.Tree);
var compilation4 = compilation0.WithSource(source4.Tree);
var compilation5 = compilation0.WithSource(source5.Tree);
var v0 = CompileAndVerify(compilation0);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var f2 = compilation2.GetMember<MethodSymbol>("C.F");
var f3 = compilation3.GetMember<MethodSymbol>("C.F");
var f4 = compilation4.GetMember<MethodSymbol>("C.F");
var f5 = compilation5.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
// y is added
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifySynthesizedMembers(
"C: {<>c, <F>d__0}",
"C.<>c: {<>9__0_0, <F>b__0_0}",
"C.<F>d__0: {<>1__state, <>t__builder, <x>5__1, <y>5__3, <>s__2, <>u__1, MoveNext, SetStateMachine}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
// y is removed
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
// Synthesized members collection still includes y field since members are only added to it and never deleted.
// The corresponding CLR field is also present.
diff2.VerifySynthesizedMembers(
"C: {<>c, <F>d__0}",
"C.<>c: {<>9__0_0, <F>b__0_0}",
"C.<F>d__0: {<>1__state, <>t__builder, <x>5__1, <>s__2, <>u__1, MoveNext, SetStateMachine, <y>5__3}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
// y is added and a new slot index is allocated for it
var diff3 = compilation3.EmitDifference(
diff2.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f2, f3, GetSyntaxMapFromMarkers(source2, source3))));
diff3.VerifySynthesizedMembers(
"C: {<>c, <F>d__0}",
"C.<>c: {<>9__0_0, <F>b__0_0}",
"C.<F>d__0: {<>1__state, <>t__builder, <x>5__1, <y>5__4, <>s__2, <>u__1, MoveNext, SetStateMachine, <y>5__3}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
// y is removed
var diff4 = compilation4.EmitDifference(
diff3.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f3, f4, GetSyntaxMapFromMarkers(source3, source4))));
diff4.VerifySynthesizedMembers(
"C: {<>c, <F>d__0}",
"C.<>c: {<>9__0_0, <F>b__0_0}",
"C.<F>d__0: {<>1__state, <>t__builder, <x>5__1, <>s__2, <>u__1, MoveNext, SetStateMachine, <y>5__4, <y>5__3}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
// y is added
var diff5 = compilation5.EmitDifference(
diff4.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f4, f5, GetSyntaxMapFromMarkers(source4, source5))));
diff5.VerifySynthesizedMembers(
"C: {<>c, <F>d__0}",
"C.<>c: {<>9__0_0, <F>b__0_0}",
"C.<F>d__0: {<>1__state, <>t__builder, <x>5__1, <y>5__5, <>s__2, <>u__1, MoveNext, SetStateMachine, <y>5__4, <y>5__3}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}");
}
[Fact]
public void HoistedAnonymousTypes_Dynamic2()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main(string[] args)
{
args = Iterator().ToArray();
}
private static IEnumerable<string> Iterator()
{
string[] <N:15>args = new[] { ""a"", ""bB"", ""Cc"", ""DD"" }</N:15>;
var <N:16>list = false ? null : new { Head = (dynamic)null, Tail = (dynamic)null }</N:16>;
for (int <N:18>i = 0</N:18>; i < 10; i++)
{
var <N:6>result =
from a in args
<N:0>let x = a.Reverse()</N:0>
<N:1>let y = x.Reverse()</N:1>
<N:2>where x.SequenceEqual(y)</N:2>
orderby <N:3>a.Length ascending</N:3>, <N:4>a descending</N:4>
<N:5>select new { Value = a, Length = x.Count() }</N:5></N:6>;
var <N:8>linked = result.Aggregate(
false ? new { Head = (string)null, Tail = (dynamic)null } : null,
<N:7>(total, curr) => new { Head = curr.Value, Tail = (dynamic)total }</N:7>)</N:8>;
while (linked != null)
{
<N:9>yield return linked.Head</N:9>;
linked = linked.Tail;
}
var <N:14>newArgs =
from a in result
<N:10>let value = a.Value</N:10>
<N:11>let length = a.Length</N:11>
<N:12>where value.Length == length</N:12>
<N:13>select value + value</N:13></N:14>;
args = args.Concat(newArgs).ToArray();
list = new { Head = (dynamic)i, Tail = (dynamic)list };
System.Diagnostics.Debugger.Break();
}
System.Diagnostics.Debugger.Break();
}
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main(string[] args)
{
args = Iterator().ToArray();
}
private static IEnumerable<string> Iterator()
{
string[] <N:15>args = new[] { ""a"", ""bB"", ""Cc"", ""DD"" }</N:15>;
var <N:16>list = false ? null : new { Head = (dynamic)null, Tail = (dynamic)null }</N:16>;
for (int <N:18>i = 0</N:18>; i < 10; i++)
{
var <N:6>result =
from a in args
<N:0>let x = a.Reverse()</N:0>
<N:1>let y = x.Reverse()</N:1>
<N:2>where x.SequenceEqual(y)</N:2>
orderby <N:3>a.Length ascending</N:3>, <N:4>a descending</N:4>
<N:5>select new { Value = a, Length = x.Count() }</N:5></N:6>;
var <N:8>linked = result.Aggregate(
false ? new { Head = (string)null, Tail = (dynamic)null } : null,
<N:7>(total, curr) => new { Head = curr.Value, Tail = (dynamic)total }</N:7>)</N:8>;
var <N:17>temp = list</N:17>;
while (temp != null)
{
<N:9>yield return temp.Head</N:9>;
temp = temp.Tail;
}
var <N:14>newArgs =
from a in result
<N:10>let value = a.Value</N:10>
<N:11>let length = a.Length</N:11>
<N:12>where value.Length == length</N:12>
<N:13>select value + value</N:13></N:14>;
args = args.Concat(newArgs).ToArray();
list = new { Head = (dynamic)i, Tail = (dynamic)list };
System.Diagnostics.Debugger.Break();
}
System.Diagnostics.Debugger.Break();
}
}
");
var source2 = MarkedSource(@"
using System.Collections.Generic;
using System.Linq;
class Program
{
static void Main(string[] args)
{
args = Iterator().ToArray();
}
private static IEnumerable<string> Iterator()
{
string[] <N:15>args = new[] { ""a"", ""bB"", ""Cc"", ""DD"" }</N:15>;
var <N:16>list = false ? null : new { Head = (dynamic)null, Tail = (dynamic)null }</N:16>;
for (int <N:18>i = 0</N:18>; i < 10; i++)
{
var <N:6>result =
from a in args
<N:0>let x = a.Reverse()</N:0>
<N:1>let y = x.Reverse()</N:1>
<N:2>where x.SequenceEqual(y)</N:2>
orderby <N:3>a.Length ascending</N:3>, <N:4>a descending</N:4>
<N:5>select new { Value = a, Length = x.Count() }</N:5></N:6>;
var <N:8>linked = result.Aggregate(
false ? new { Head = (string)null, Tail = (dynamic)null } : null,
<N:7>(total, curr) => new { Head = curr.Value, Tail = (dynamic)total }</N:7>)</N:8>;
var <N:17>temp = list</N:17>;
while (temp != null)
{
<N:9>yield return temp.Head.ToString()</N:9>;
temp = temp.Tail;
}
var <N:14>newArgs =
from a in result
<N:10>let value = a.Value</N:10>
<N:11>let length = a.Length</N:11>
<N:12>where value.Length == length</N:12>
<N:13>select value + value</N:13></N:14>;
args = args.Concat(newArgs).ToArray();
list = new { Head = (dynamic)i, Tail = (dynamic)list };
System.Diagnostics.Debugger.Break();
}
System.Diagnostics.Debugger.Break();
}
}
");
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, new[] { SystemCoreRef, CSharpRef }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
var compilation2 = compilation1.WithSource(source2.Tree);
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("Program.Iterator");
var f1 = compilation1.GetMember<MethodSymbol>("Program.Iterator");
var f2 = compilation2.GetMember<MethodSymbol>("Program.Iterator");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
v0.VerifyIL("Program.<Iterator>d__1.System.Collections.IEnumerator.MoveNext()", @"
{
// Code size 798 (0x31e)
.maxstack 5
.locals init (int V_0,
bool V_1,
int V_2,
bool V_3)
IL_0000: ldarg.0
IL_0001: ldfld ""int Program.<Iterator>d__1.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_001b
IL_0014: br IL_019b
IL_0019: ldc.i4.0
IL_001a: ret
IL_001b: ldarg.0
IL_001c: ldc.i4.m1
IL_001d: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_0022: nop
IL_0023: ldarg.0
IL_0024: ldc.i4.4
IL_0025: newarr ""string""
IL_002a: dup
IL_002b: ldc.i4.0
IL_002c: ldstr ""a""
IL_0031: stelem.ref
IL_0032: dup
IL_0033: ldc.i4.1
IL_0034: ldstr ""bB""
IL_0039: stelem.ref
IL_003a: dup
IL_003b: ldc.i4.2
IL_003c: ldstr ""Cc""
IL_0041: stelem.ref
IL_0042: dup
IL_0043: ldc.i4.3
IL_0044: ldstr ""DD""
IL_0049: stelem.ref
IL_004a: stfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_004f: ldarg.0
IL_0050: ldnull
IL_0051: ldnull
IL_0052: newobj ""<>f__AnonymousType0<dynamic, dynamic>..ctor(dynamic, dynamic)""
IL_0057: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_005c: ldarg.0
IL_005d: ldc.i4.0
IL_005e: stfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0063: br IL_0305
IL_0068: nop
IL_0069: ldarg.0
IL_006a: ldarg.0
IL_006b: ldfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_0070: ldsfld ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> Program.<>c.<>9__1_0""
IL_0075: dup
IL_0076: brtrue.s IL_008f
IL_0078: pop
IL_0079: ldsfld ""Program.<>c Program.<>c.<>9""
IL_007e: ldftn ""<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> Program.<>c.<Iterator>b__1_0(string)""
IL_0084: newobj ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>..ctor(object, System.IntPtr)""
IL_0089: dup
IL_008a: stsfld ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> Program.<>c.<>9__1_0""
IL_008f: call ""System.Collections.Generic.IEnumerable<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> System.Linq.Enumerable.Select<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>(System.Collections.Generic.IEnumerable<string>, System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>)""
IL_0094: ldsfld ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> Program.<>c.<>9__1_1""
IL_0099: dup
IL_009a: brtrue.s IL_00b3
IL_009c: pop
IL_009d: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00a2: ldftn ""<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y> Program.<>c.<Iterator>b__1_1(<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>)""
IL_00a8: newobj ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>..ctor(object, System.IntPtr)""
IL_00ad: dup
IL_00ae: stsfld ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> Program.<>c.<>9__1_1""
IL_00b3: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.Select<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>(System.Collections.Generic.IEnumerable<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>, System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>)""
IL_00b8: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool> Program.<>c.<>9__1_2""
IL_00bd: dup
IL_00be: brtrue.s IL_00d7
IL_00c0: pop
IL_00c1: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00c6: ldftn ""bool Program.<>c.<Iterator>b__1_2(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_00cc: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool>..ctor(object, System.IntPtr)""
IL_00d1: dup
IL_00d2: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool> Program.<>c.<>9__1_2""
IL_00d7: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.Where<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool>)""
IL_00dc: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int> Program.<>c.<>9__1_3""
IL_00e1: dup
IL_00e2: brtrue.s IL_00fb
IL_00e4: pop
IL_00e5: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00ea: ldftn ""int Program.<>c.<Iterator>b__1_3(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_00f0: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>..ctor(object, System.IntPtr)""
IL_00f5: dup
IL_00f6: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int> Program.<>c.<>9__1_3""
IL_00fb: call ""System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.OrderBy<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>)""
IL_0100: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string> Program.<>c.<>9__1_4""
IL_0105: dup
IL_0106: brtrue.s IL_011f
IL_0108: pop
IL_0109: ldsfld ""Program.<>c Program.<>c.<>9""
IL_010e: ldftn ""string Program.<>c.<Iterator>b__1_4(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_0114: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>..ctor(object, System.IntPtr)""
IL_0119: dup
IL_011a: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string> Program.<>c.<>9__1_4""
IL_011f: call ""System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.ThenByDescending<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>(System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>)""
IL_0124: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>> Program.<>c.<>9__1_5""
IL_0129: dup
IL_012a: brtrue.s IL_0143
IL_012c: pop
IL_012d: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0132: ldftn ""<anonymous type: string Value, int Length> Program.<>c.<Iterator>b__1_5(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_0138: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>..ctor(object, System.IntPtr)""
IL_013d: dup
IL_013e: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>> Program.<>c.<>9__1_5""
IL_0143: call ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>)""
IL_0148: stfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_014d: ldarg.0
IL_014e: ldarg.0
IL_014f: ldfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_0154: ldnull
IL_0155: ldsfld ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>> Program.<>c.<>9__1_6""
IL_015a: dup
IL_015b: brtrue.s IL_0174
IL_015d: pop
IL_015e: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0163: ldftn ""<anonymous type: string Head, dynamic Tail> Program.<>c.<Iterator>b__1_6(<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>)""
IL_0169: newobj ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>..ctor(object, System.IntPtr)""
IL_016e: dup
IL_016f: stsfld ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>> Program.<>c.<>9__1_6""
IL_0174: call ""<anonymous type: string Head, dynamic Tail> System.Linq.Enumerable.Aggregate<<anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>(System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>>, <anonymous type: string Head, dynamic Tail>, System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>)""
IL_0179: stfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_017e: br.s IL_01f5
IL_0180: nop
IL_0181: ldarg.0
IL_0182: ldarg.0
IL_0183: ldfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_0188: callvirt ""string <>f__AnonymousType0<string, dynamic>.Head.get""
IL_018d: stfld ""string Program.<Iterator>d__1.<>2__current""
IL_0192: ldarg.0
IL_0193: ldc.i4.1
IL_0194: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_0199: ldc.i4.1
IL_019a: ret
IL_019b: ldarg.0
IL_019c: ldc.i4.m1
IL_019d: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_01a2: ldarg.0
IL_01a3: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>> Program.<>o__1.<>p__0""
IL_01a8: brfalse.s IL_01ac
IL_01aa: br.s IL_01d0
IL_01ac: ldc.i4.0
IL_01ad: ldtoken ""<>f__AnonymousType0<string, dynamic>""
IL_01b2: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_01b7: ldtoken ""Program""
IL_01bc: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_01c1: call ""System.Runtime.CompilerServices.CallSiteBinder Microsoft.CSharp.RuntimeBinder.Binder.Convert(Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags, System.Type, System.Type)""
IL_01c6: call ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>>.Create(System.Runtime.CompilerServices.CallSiteBinder)""
IL_01cb: stsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>> Program.<>o__1.<>p__0""
IL_01d0: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>> Program.<>o__1.<>p__0""
IL_01d5: ldfld ""System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>>.Target""
IL_01da: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>> Program.<>o__1.<>p__0""
IL_01df: ldarg.0
IL_01e0: ldfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_01e5: callvirt ""dynamic <>f__AnonymousType0<string, dynamic>.Tail.get""
IL_01ea: callvirt ""<anonymous type: string Head, dynamic Tail> System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: string Head, dynamic Tail>>.Invoke(System.Runtime.CompilerServices.CallSite, dynamic)""
IL_01ef: stfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_01f4: nop
IL_01f5: ldarg.0
IL_01f6: ldfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_01fb: ldnull
IL_01fc: cgt.un
IL_01fe: stloc.1
IL_01ff: ldloc.1
IL_0200: brtrue IL_0180
IL_0205: ldarg.0
IL_0206: ldarg.0
IL_0207: ldfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_020c: ldsfld ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>> Program.<>c.<>9__1_7""
IL_0211: dup
IL_0212: brtrue.s IL_022b
IL_0214: pop
IL_0215: ldsfld ""Program.<>c Program.<>c.<>9""
IL_021a: ldftn ""<anonymous type: <anonymous type: string Value, int Length> a, string value> Program.<>c.<Iterator>b__1_7(<anonymous type: string Value, int Length>)""
IL_0220: newobj ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>..ctor(object, System.IntPtr)""
IL_0225: dup
IL_0226: stsfld ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>> Program.<>c.<>9__1_7""
IL_022b: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string Value, int Length> a, string value>> System.Linq.Enumerable.Select<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>(System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>>, System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>)""
IL_0230: ldsfld ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> Program.<>c.<>9__1_8""
IL_0235: dup
IL_0236: brtrue.s IL_024f
IL_0238: pop
IL_0239: ldsfld ""Program.<>c Program.<>c.<>9""
IL_023e: ldftn ""<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length> Program.<>c.<Iterator>b__1_8(<anonymous type: <anonymous type: string Value, int Length> a, string value>)""
IL_0244: newobj ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>..ctor(object, System.IntPtr)""
IL_0249: dup
IL_024a: stsfld ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> Program.<>c.<>9__1_8""
IL_024f: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string Value, int Length> a, string value>>, System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>)""
IL_0254: ldsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool> Program.<>c.<>9__1_9""
IL_0259: dup
IL_025a: brtrue.s IL_0273
IL_025c: pop
IL_025d: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0262: ldftn ""bool Program.<>c.<Iterator>b__1_9(<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>)""
IL_0268: newobj ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool>..ctor(object, System.IntPtr)""
IL_026d: dup
IL_026e: stsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool> Program.<>c.<>9__1_9""
IL_0273: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> System.Linq.Enumerable.Where<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>, System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool>)""
IL_0278: ldsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string> Program.<>c.<>9__1_10""
IL_027d: dup
IL_027e: brtrue.s IL_0297
IL_0280: pop
IL_0281: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0286: ldftn ""string Program.<>c.<Iterator>b__1_10(<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>)""
IL_028c: newobj ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>..ctor(object, System.IntPtr)""
IL_0291: dup
IL_0292: stsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string> Program.<>c.<>9__1_10""
IL_0297: call ""System.Collections.Generic.IEnumerable<string> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>, System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>)""
IL_029c: stfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_02a1: ldarg.0
IL_02a2: ldarg.0
IL_02a3: ldfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_02a8: ldarg.0
IL_02a9: ldfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_02ae: call ""System.Collections.Generic.IEnumerable<string> System.Linq.Enumerable.Concat<string>(System.Collections.Generic.IEnumerable<string>, System.Collections.Generic.IEnumerable<string>)""
IL_02b3: call ""string[] System.Linq.Enumerable.ToArray<string>(System.Collections.Generic.IEnumerable<string>)""
IL_02b8: stfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_02bd: ldarg.0
IL_02be: ldarg.0
IL_02bf: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_02c4: box ""int""
IL_02c9: ldarg.0
IL_02ca: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_02cf: newobj ""<>f__AnonymousType0<dynamic, dynamic>..ctor(dynamic, dynamic)""
IL_02d4: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_02d9: call ""void System.Diagnostics.Debugger.Break()""
IL_02de: nop
IL_02df: nop
IL_02e0: ldarg.0
IL_02e1: ldnull
IL_02e2: stfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_02e7: ldarg.0
IL_02e8: ldnull
IL_02e9: stfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_02ee: ldarg.0
IL_02ef: ldnull
IL_02f0: stfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_02f5: ldarg.0
IL_02f6: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_02fb: stloc.2
IL_02fc: ldarg.0
IL_02fd: ldloc.2
IL_02fe: ldc.i4.1
IL_02ff: add
IL_0300: stfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0305: ldarg.0
IL_0306: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_030b: ldc.i4.s 10
IL_030d: clt
IL_030f: stloc.3
IL_0310: ldloc.3
IL_0311: brtrue IL_0068
IL_0316: call ""void System.Diagnostics.Debugger.Break()""
IL_031b: nop
IL_031c: ldc.i4.0
IL_031d: ret
}");
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.VerifySynthesizedMembers(
"Program.<>o__1#1: {<>p__0, <>p__1}",
"Program: {<>c, <>o__1#1, <Iterator>d__1}",
"Program.<>c: {<>9__1_0, <>9__1_1, <>9__1_2, <>9__1_3, <>9__1_4, <>9__1_5, <>9__1_6, <>9__1_7, <>9__1_8, <>9__1_9, <>9__1_10, <Iterator>b__1_0, <Iterator>b__1_1, <Iterator>b__1_2, <Iterator>b__1_3, <Iterator>b__1_4, <Iterator>b__1_5, <Iterator>b__1_6, <Iterator>b__1_7, <Iterator>b__1_8, <Iterator>b__1_9, <Iterator>b__1_10}",
"Program.<Iterator>d__1: {<>1__state, <>2__current, <>l__initialThreadId, <args>5__1, <list>5__2, <i>5__3, <result>5__4, <linked>5__5, <temp>5__7, <newArgs>5__6, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.String>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.String>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.String>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType4<<a>j__TPar, <value>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType3<<Value>j__TPar, <Length>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType5<<<>h__TransparentIdentifier0>j__TPar, <length>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType2<<<>h__TransparentIdentifier0>j__TPar, <y>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType0<<Head>j__TPar, <Tail>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType1<<a>j__TPar, <x>j__TPar>: {Equals, GetHashCode, ToString}");
diff1.VerifyIL("Program.<Iterator>d__1.System.Collections.IEnumerator.MoveNext()", @"
{
// Code size 885 (0x375)
.maxstack 5
.locals init (int V_0,
bool V_1,
int V_2,
bool V_3)
IL_0000: ldarg.0
IL_0001: ldfld ""int Program.<Iterator>d__1.<>1__state""
IL_0006: stloc.0
IL_0007: ldloc.0
IL_0008: brfalse.s IL_0012
IL_000a: br.s IL_000c
IL_000c: ldloc.0
IL_000d: ldc.i4.1
IL_000e: beq.s IL_0014
IL_0010: br.s IL_0019
IL_0012: br.s IL_001b
IL_0014: br IL_01eb
IL_0019: ldc.i4.0
IL_001a: ret
IL_001b: ldarg.0
IL_001c: ldc.i4.m1
IL_001d: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_0022: nop
IL_0023: ldarg.0
IL_0024: ldc.i4.4
IL_0025: newarr ""string""
IL_002a: dup
IL_002b: ldc.i4.0
IL_002c: ldstr ""a""
IL_0031: stelem.ref
IL_0032: dup
IL_0033: ldc.i4.1
IL_0034: ldstr ""bB""
IL_0039: stelem.ref
IL_003a: dup
IL_003b: ldc.i4.2
IL_003c: ldstr ""Cc""
IL_0041: stelem.ref
IL_0042: dup
IL_0043: ldc.i4.3
IL_0044: ldstr ""DD""
IL_0049: stelem.ref
IL_004a: stfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_004f: ldarg.0
IL_0050: ldnull
IL_0051: ldnull
IL_0052: newobj ""<>f__AnonymousType0<dynamic, dynamic>..ctor(dynamic, dynamic)""
IL_0057: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_005c: ldarg.0
IL_005d: ldc.i4.0
IL_005e: stfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0063: br IL_035c
IL_0068: nop
IL_0069: ldarg.0
IL_006a: ldarg.0
IL_006b: ldfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_0070: ldsfld ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> Program.<>c.<>9__1_0""
IL_0075: dup
IL_0076: brtrue.s IL_008f
IL_0078: pop
IL_0079: ldsfld ""Program.<>c Program.<>c.<>9""
IL_007e: ldftn ""<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> Program.<>c.<Iterator>b__1_0(string)""
IL_0084: newobj ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>..ctor(object, System.IntPtr)""
IL_0089: dup
IL_008a: stsfld ""System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> Program.<>c.<>9__1_0""
IL_008f: call ""System.Collections.Generic.IEnumerable<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>> System.Linq.Enumerable.Select<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>(System.Collections.Generic.IEnumerable<string>, System.Func<string, <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>)""
IL_0094: ldsfld ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> Program.<>c.<>9__1_1""
IL_0099: dup
IL_009a: brtrue.s IL_00b3
IL_009c: pop
IL_009d: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00a2: ldftn ""<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y> Program.<>c.<Iterator>b__1_1(<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>)""
IL_00a8: newobj ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>..ctor(object, System.IntPtr)""
IL_00ad: dup
IL_00ae: stsfld ""System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> Program.<>c.<>9__1_1""
IL_00b3: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.Select<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>(System.Collections.Generic.IEnumerable<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>>, System.Func<<anonymous type: string a, System.Collections.Generic.IEnumerable<char> x>, <anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>)""
IL_00b8: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool> Program.<>c.<>9__1_2""
IL_00bd: dup
IL_00be: brtrue.s IL_00d7
IL_00c0: pop
IL_00c1: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00c6: ldftn ""bool Program.<>c.<Iterator>b__1_2(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_00cc: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool>..ctor(object, System.IntPtr)""
IL_00d1: dup
IL_00d2: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool> Program.<>c.<>9__1_2""
IL_00d7: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.Where<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, bool>)""
IL_00dc: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int> Program.<>c.<>9__1_3""
IL_00e1: dup
IL_00e2: brtrue.s IL_00fb
IL_00e4: pop
IL_00e5: ldsfld ""Program.<>c Program.<>c.<>9""
IL_00ea: ldftn ""int Program.<>c.<Iterator>b__1_3(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_00f0: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>..ctor(object, System.IntPtr)""
IL_00f5: dup
IL_00f6: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int> Program.<>c.<>9__1_3""
IL_00fb: call ""System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.OrderBy<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, int>)""
IL_0100: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string> Program.<>c.<>9__1_4""
IL_0105: dup
IL_0106: brtrue.s IL_011f
IL_0108: pop
IL_0109: ldsfld ""Program.<>c Program.<>c.<>9""
IL_010e: ldftn ""string Program.<>c.<Iterator>b__1_4(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_0114: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>..ctor(object, System.IntPtr)""
IL_0119: dup
IL_011a: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string> Program.<>c.<>9__1_4""
IL_011f: call ""System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>> System.Linq.Enumerable.ThenByDescending<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>(System.Linq.IOrderedEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, string>)""
IL_0124: ldsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>> Program.<>c.<>9__1_5""
IL_0129: dup
IL_012a: brtrue.s IL_0143
IL_012c: pop
IL_012d: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0132: ldftn ""<anonymous type: string Value, int Length> Program.<>c.<Iterator>b__1_5(<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>)""
IL_0138: newobj ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>..ctor(object, System.IntPtr)""
IL_013d: dup
IL_013e: stsfld ""System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>> Program.<>c.<>9__1_5""
IL_0143: call ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>>, System.Func<<anonymous type: <anonymous type: string a, System.Collections.Generic.IEnumerable<char> x> <>h__TransparentIdentifier0, System.Collections.Generic.IEnumerable<char> y>, <anonymous type: string Value, int Length>>)""
IL_0148: stfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_014d: ldarg.0
IL_014e: ldarg.0
IL_014f: ldfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_0154: ldnull
IL_0155: ldsfld ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>> Program.<>c.<>9__1_6""
IL_015a: dup
IL_015b: brtrue.s IL_0174
IL_015d: pop
IL_015e: ldsfld ""Program.<>c Program.<>c.<>9""
IL_0163: ldftn ""<anonymous type: string Head, dynamic Tail> Program.<>c.<Iterator>b__1_6(<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>)""
IL_0169: newobj ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>..ctor(object, System.IntPtr)""
IL_016e: dup
IL_016f: stsfld ""System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>> Program.<>c.<>9__1_6""
IL_0174: call ""<anonymous type: string Head, dynamic Tail> System.Linq.Enumerable.Aggregate<<anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>(System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>>, <anonymous type: string Head, dynamic Tail>, System.Func<<anonymous type: string Head, dynamic Tail>, <anonymous type: string Value, int Length>, <anonymous type: string Head, dynamic Tail>>)""
IL_0179: stfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_017e: ldarg.0
IL_017f: ldarg.0
IL_0180: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_0185: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_018a: br IL_0245
IL_018f: nop
IL_0190: ldarg.0
IL_0191: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>> Program.<>o__1#1.<>p__0""
IL_0196: brfalse.s IL_019a
IL_0198: br.s IL_01be
IL_019a: ldc.i4.0
IL_019b: ldtoken ""string""
IL_01a0: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_01a5: ldtoken ""Program""
IL_01aa: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_01af: call ""System.Runtime.CompilerServices.CallSiteBinder Microsoft.CSharp.RuntimeBinder.Binder.Convert(Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags, System.Type, System.Type)""
IL_01b4: call ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>>.Create(System.Runtime.CompilerServices.CallSiteBinder)""
IL_01b9: stsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>> Program.<>o__1#1.<>p__0""
IL_01be: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>> Program.<>o__1#1.<>p__0""
IL_01c3: ldfld ""System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>>.Target""
IL_01c8: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>> Program.<>o__1#1.<>p__0""
IL_01cd: ldarg.0
IL_01ce: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_01d3: callvirt ""dynamic <>f__AnonymousType0<dynamic, dynamic>.Head.get""
IL_01d8: callvirt ""string System.Func<System.Runtime.CompilerServices.CallSite, dynamic, string>.Invoke(System.Runtime.CompilerServices.CallSite, dynamic)""
IL_01dd: stfld ""string Program.<Iterator>d__1.<>2__current""
IL_01e2: ldarg.0
IL_01e3: ldc.i4.1
IL_01e4: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_01e9: ldc.i4.1
IL_01ea: ret
IL_01eb: ldarg.0
IL_01ec: ldc.i4.m1
IL_01ed: stfld ""int Program.<Iterator>d__1.<>1__state""
IL_01f2: ldarg.0
IL_01f3: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>> Program.<>o__1#1.<>p__1""
IL_01f8: brfalse.s IL_01fc
IL_01fa: br.s IL_0220
IL_01fc: ldc.i4.0
IL_01fd: ldtoken ""<>f__AnonymousType0<dynamic, dynamic>""
IL_0202: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0207: ldtoken ""Program""
IL_020c: call ""System.Type System.Type.GetTypeFromHandle(System.RuntimeTypeHandle)""
IL_0211: call ""System.Runtime.CompilerServices.CallSiteBinder Microsoft.CSharp.RuntimeBinder.Binder.Convert(Microsoft.CSharp.RuntimeBinder.CSharpBinderFlags, System.Type, System.Type)""
IL_0216: call ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>>.Create(System.Runtime.CompilerServices.CallSiteBinder)""
IL_021b: stsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>> Program.<>o__1#1.<>p__1""
IL_0220: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>> Program.<>o__1#1.<>p__1""
IL_0225: ldfld ""System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>> System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>>.Target""
IL_022a: ldsfld ""System.Runtime.CompilerServices.CallSite<System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>> Program.<>o__1#1.<>p__1""
IL_022f: ldarg.0
IL_0230: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_0235: callvirt ""dynamic <>f__AnonymousType0<dynamic, dynamic>.Tail.get""
IL_023a: callvirt ""<anonymous type: dynamic Head, dynamic Tail> System.Func<System.Runtime.CompilerServices.CallSite, dynamic, <anonymous type: dynamic Head, dynamic Tail>>.Invoke(System.Runtime.CompilerServices.CallSite, dynamic)""
IL_023f: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_0244: nop
IL_0245: ldarg.0
IL_0246: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_024b: ldnull
IL_024c: cgt.un
IL_024e: stloc.1
IL_024f: ldloc.1
IL_0250: brtrue IL_018f
IL_0255: ldarg.0
IL_0256: ldarg.0
IL_0257: ldfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_025c: ldsfld ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>> Program.<>c.<>9__1_7""
IL_0261: dup
IL_0262: brtrue.s IL_027b
IL_0264: pop
IL_0265: ldsfld ""Program.<>c Program.<>c.<>9""
IL_026a: ldftn ""<anonymous type: <anonymous type: string Value, int Length> a, string value> Program.<>c.<Iterator>b__1_7(<anonymous type: string Value, int Length>)""
IL_0270: newobj ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>..ctor(object, System.IntPtr)""
IL_0275: dup
IL_0276: stsfld ""System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>> Program.<>c.<>9__1_7""
IL_027b: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string Value, int Length> a, string value>> System.Linq.Enumerable.Select<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>(System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>>, System.Func<<anonymous type: string Value, int Length>, <anonymous type: <anonymous type: string Value, int Length> a, string value>>)""
IL_0280: ldsfld ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> Program.<>c.<>9__1_8""
IL_0285: dup
IL_0286: brtrue.s IL_029f
IL_0288: pop
IL_0289: ldsfld ""Program.<>c Program.<>c.<>9""
IL_028e: ldftn ""<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length> Program.<>c.<Iterator>b__1_8(<anonymous type: <anonymous type: string Value, int Length> a, string value>)""
IL_0294: newobj ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>..ctor(object, System.IntPtr)""
IL_0299: dup
IL_029a: stsfld ""System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> Program.<>c.<>9__1_8""
IL_029f: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: string Value, int Length> a, string value>>, System.Func<<anonymous type: <anonymous type: string Value, int Length> a, string value>, <anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>)""
IL_02a4: ldsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool> Program.<>c.<>9__1_9""
IL_02a9: dup
IL_02aa: brtrue.s IL_02c3
IL_02ac: pop
IL_02ad: ldsfld ""Program.<>c Program.<>c.<>9""
IL_02b2: ldftn ""bool Program.<>c.<Iterator>b__1_9(<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>)""
IL_02b8: newobj ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool>..ctor(object, System.IntPtr)""
IL_02bd: dup
IL_02be: stsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool> Program.<>c.<>9__1_9""
IL_02c3: call ""System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>> System.Linq.Enumerable.Where<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>, System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, bool>)""
IL_02c8: ldsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string> Program.<>c.<>9__1_10""
IL_02cd: dup
IL_02ce: brtrue.s IL_02e7
IL_02d0: pop
IL_02d1: ldsfld ""Program.<>c Program.<>c.<>9""
IL_02d6: ldftn ""string Program.<>c.<Iterator>b__1_10(<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>)""
IL_02dc: newobj ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>..ctor(object, System.IntPtr)""
IL_02e1: dup
IL_02e2: stsfld ""System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string> Program.<>c.<>9__1_10""
IL_02e7: call ""System.Collections.Generic.IEnumerable<string> System.Linq.Enumerable.Select<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>(System.Collections.Generic.IEnumerable<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>>, System.Func<<anonymous type: <anonymous type: <anonymous type: string Value, int Length> a, string value> <>h__TransparentIdentifier0, int length>, string>)""
IL_02ec: stfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_02f1: ldarg.0
IL_02f2: ldarg.0
IL_02f3: ldfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_02f8: ldarg.0
IL_02f9: ldfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_02fe: call ""System.Collections.Generic.IEnumerable<string> System.Linq.Enumerable.Concat<string>(System.Collections.Generic.IEnumerable<string>, System.Collections.Generic.IEnumerable<string>)""
IL_0303: call ""string[] System.Linq.Enumerable.ToArray<string>(System.Collections.Generic.IEnumerable<string>)""
IL_0308: stfld ""string[] Program.<Iterator>d__1.<args>5__1""
IL_030d: ldarg.0
IL_030e: ldarg.0
IL_030f: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0314: box ""int""
IL_0319: ldarg.0
IL_031a: ldfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_031f: newobj ""<>f__AnonymousType0<dynamic, dynamic>..ctor(dynamic, dynamic)""
IL_0324: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<list>5__2""
IL_0329: call ""void System.Diagnostics.Debugger.Break()""
IL_032e: nop
IL_032f: nop
IL_0330: ldarg.0
IL_0331: ldnull
IL_0332: stfld ""System.Collections.Generic.IEnumerable<<anonymous type: string Value, int Length>> Program.<Iterator>d__1.<result>5__4""
IL_0337: ldarg.0
IL_0338: ldnull
IL_0339: stfld ""<anonymous type: string Head, dynamic Tail> Program.<Iterator>d__1.<linked>5__5""
IL_033e: ldarg.0
IL_033f: ldnull
IL_0340: stfld ""<anonymous type: dynamic Head, dynamic Tail> Program.<Iterator>d__1.<temp>5__7""
IL_0345: ldarg.0
IL_0346: ldnull
IL_0347: stfld ""System.Collections.Generic.IEnumerable<string> Program.<Iterator>d__1.<newArgs>5__6""
IL_034c: ldarg.0
IL_034d: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0352: stloc.2
IL_0353: ldarg.0
IL_0354: ldloc.2
IL_0355: ldc.i4.1
IL_0356: add
IL_0357: stfld ""int Program.<Iterator>d__1.<i>5__3""
IL_035c: ldarg.0
IL_035d: ldfld ""int Program.<Iterator>d__1.<i>5__3""
IL_0362: ldc.i4.s 10
IL_0364: clt
IL_0366: stloc.3
IL_0367: ldloc.3
IL_0368: brtrue IL_0068
IL_036d: call ""void System.Diagnostics.Debugger.Break()""
IL_0372: nop
IL_0373: ldc.i4.0
IL_0374: ret
}");
var diff2 = compilation2.EmitDifference(
diff1.NextGeneration,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f1, f2, GetSyntaxMapFromMarkers(source1, source2))));
diff2.VerifySynthesizedMembers(
"Program.<>o__1#1: {<>p__0, <>p__1}",
"Program.<>o__1#2: {<>p__0, <>p__1, <>p__2}",
"Program: {<>c, <>o__1#2, <Iterator>d__1, <>o__1#1}",
"Program.<>c: {<>9__1_0, <>9__1_1, <>9__1_2, <>9__1_3, <>9__1_4, <>9__1_5, <>9__1_6, <>9__1_7, <>9__1_8, <>9__1_9, <>9__1_10, <Iterator>b__1_0, <Iterator>b__1_1, <Iterator>b__1_2, <Iterator>b__1_3, <Iterator>b__1_4, <Iterator>b__1_5, <Iterator>b__1_6, <Iterator>b__1_7, <Iterator>b__1_8, <Iterator>b__1_9, <Iterator>b__1_10}",
"Program.<Iterator>d__1: {<>1__state, <>2__current, <>l__initialThreadId, <args>5__1, <list>5__2, <i>5__3, <result>5__4, <linked>5__5, <temp>5__7, <newArgs>5__6, System.IDisposable.Dispose, MoveNext, System.Collections.Generic.IEnumerator<System.String>.get_Current, System.Collections.IEnumerator.Reset, System.Collections.IEnumerator.get_Current, System.Collections.Generic.IEnumerable<System.String>.GetEnumerator, System.Collections.IEnumerable.GetEnumerator, System.Collections.Generic.IEnumerator<System.String>.Current, System.Collections.IEnumerator.Current}",
"<>f__AnonymousType4<<a>j__TPar, <value>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType1<<a>j__TPar, <x>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType3<<Value>j__TPar, <Length>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType0<<Head>j__TPar, <Tail>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType5<<<>h__TransparentIdentifier0>j__TPar, <length>j__TPar>: {Equals, GetHashCode, ToString}",
"<>f__AnonymousType2<<<>h__TransparentIdentifier0>j__TPar, <y>j__TPar>: {Equals, GetHashCode, ToString}");
}
[Fact, WorkItem(9119, "https://github.com/dotnet/roslyn/issues/9119")]
public void MissingIteratorStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>yield return 0;</N:1>
Console.WriteLine(a);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(a);
}
}
");
var compilation0 = CreateCompilationWithMscorlib40(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// older versions of mscorlib don't contain IteratorStateMachineAttribute
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify(
// (7,29): error CS7043: Cannot update 'C.F()'; attribute 'System.Runtime.CompilerServices.IteratorStateMachineAttribute' is missing.
Diagnostic(ErrorCode.ERR_EncUpdateFailedMissingAttribute, "F").WithArguments("C.F()", "System.Runtime.CompilerServices.IteratorStateMachineAttribute").WithLocation(7, 29));
}
[Fact, WorkItem(9119, "https://github.com/dotnet/roslyn/issues/9119")]
public void BadIteratorStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>yield return 0;</N:1>
Console.WriteLine(a);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(a);
}
}
");
var compilation0 = CreateCompilation(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// the ctor is missing a parameter
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify(
// (12,29): error CS7043: Cannot update 'C.F()'; attribute 'System.Runtime.CompilerServices.IteratorStateMachineAttribute' is missing.
// public IEnumerable<int> F()
Diagnostic(ErrorCode.ERR_EncUpdateFailedMissingAttribute, "F").WithArguments("C.F()", "System.Runtime.CompilerServices.IteratorStateMachineAttribute").WithLocation(12, 29));
}
[Fact]
public void AddedIteratorStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>yield return 0;</N:1>
Console.WriteLine(a);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { public IteratorStateMachineAttribute(Type type) { } }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(a);
}
}
");
var compilation0 = CreateCompilationWithMscorlib40(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// older versions of mscorlib don't contain IteratorStateMachineAttribute
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var ism1 = compilation1.GetMember<TypeSymbol>("System.Runtime.CompilerServices.IteratorStateMachineAttribute");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, ism1),
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
// We conclude the original method wasn't a state machine.
// The IDE however reports a Rude Edit in that case.
diff1.EmitResult.Diagnostics.Verify();
}
[Fact]
public void SourceIteratorStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System;
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { public IteratorStateMachineAttribute(Type type) { } }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>yield return 0;</N:1>
Console.WriteLine(a);
}
}
");
var source1 = MarkedSource(@"
using System;
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { public IteratorStateMachineAttribute(Type type) { } }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return 1;</N:1>
Console.WriteLine(a);
}
}
");
var compilation0 = CreateCompilation(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// older versions of mscorlib don't contain IteratorStateMachineAttribute
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
}
[Fact, WorkItem(9119, "https://github.com/dotnet/roslyn/issues/9119")]
public void MissingAsyncStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public async Task<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>await new Task();</N:1>
return a;
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public async Task<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>await new Task();</N:1>
return a;
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { TestReferences.NetFx.Minimal.mincorlib, TestReferences.NetFx.Minimal.minasync }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// older versions of mscorlib don't contain AsyncStateMachineAttribute, IteratorStateMachineAttribute
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.FailsPEVerify);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify(
// (6,28): error CS7043: Cannot update 'C.F()'; attribute 'System.Runtime.CompilerServices.AsyncStateMachineAttribute' is missing.
Diagnostic(ErrorCode.ERR_EncUpdateFailedMissingAttribute, "F").WithArguments("C.F()", "System.Runtime.CompilerServices.AsyncStateMachineAttribute").WithLocation(6, 28));
}
[Fact]
public void AddedAsyncStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public async Task<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>await new Task<int>()</N:1>;
return a;
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
namespace System.Runtime.CompilerServices
{
public class AsyncStateMachineAttribute : Attribute { public AsyncStateMachineAttribute(Type type) { } }
}
class C
{
public async Task<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>await new Task<int>()</N:1>;
return a;
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { TestReferences.NetFx.Minimal.mincorlib, TestReferences.NetFx.Minimal.minasync }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
// older versions of mscorlib don't contain IteratorStateMachineAttribute
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.FailsPEVerify);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var asm1 = compilation1.GetMember<TypeSymbol>("System.Runtime.CompilerServices.AsyncStateMachineAttribute");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Insert, null, asm1),
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
}
[Fact]
public void SourceAsyncStateMachineAttribute()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
namespace System.Runtime.CompilerServices
{
public class AsyncStateMachineAttribute : Attribute { public AsyncStateMachineAttribute(Type type) { } }
}
class C
{
public async Task<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>await new Task<int>()</N:1>;
return a;
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
namespace System.Runtime.CompilerServices
{
public class AsyncStateMachineAttribute : Attribute { public AsyncStateMachineAttribute(Type type) { } }
}
class C
{
public async Task<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>await new Task<int>()</N:1>;
return a;
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { TestReferences.NetFx.Minimal.mincorlib, TestReferences.NetFx.Minimal.minasync }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.FailsPEVerify);
v0.VerifyDiagnostics();
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
}
[Fact, WorkItem(10190, "https://github.com/dotnet/roslyn/issues/10190")]
public void NonAsyncToAsync()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public Task<int> F()
{
int <N:0>a = 0</N:0>;
return Task.FromResult(a);
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public async Task<int> F()
{
int <N:0>a = 1</N:0>;
return <N:1>await Task.FromResult(a)</N:1>;
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { NetFramework.mscorlib }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.Passes);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
}
[Fact]
public void NonAsyncToAsync_MissingAttribute()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public Task<int> F()
{
int <N:0>a = 0</N:0>;
a++;
<N:1>return new Task<int>();</N:1>
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public async Task<int> F()
{
int <N:0>a = 1</N:0>;
a++;
<N:1>return await new Task<int>();</N:1>
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { TestReferences.NetFx.Minimal.mincorlib, TestReferences.NetFx.Minimal.minasync }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.FailsPEVerify);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify(
// (6,28): error CS7043: Cannot update 'C.F()'; attribute 'System.Runtime.CompilerServices.AsyncStateMachineAttribute' is missing.
Diagnostic(ErrorCode.ERR_EncUpdateFailedMissingAttribute, "F").WithArguments("C.F()", "System.Runtime.CompilerServices.AsyncStateMachineAttribute").WithLocation(6, 28));
}
[Fact]
public void NonIteratorToIterator_MissingAttribute()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>return new int[] { a };</N:1>
}
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return a;</N:1>
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { Net20.References.mscorlib }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.Null(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.Passes);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify(
// (6,29): error CS7043: Cannot update 'C.F()'; attribute 'System.Runtime.CompilerServices.IteratorStateMachineAttribute' is missing.
Diagnostic(ErrorCode.ERR_EncUpdateFailedMissingAttribute, "F").WithArguments("C.F()", "System.Runtime.CompilerServices.IteratorStateMachineAttribute").WithLocation(6, 29));
}
[Fact]
public void NonIteratorToIterator_SourceAttribute()
{
var source0 = MarkedSource(@"
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { public IteratorStateMachineAttribute(Type type) { } }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 0</N:0>;
<N:1>return new int[] { a };</N:1>
}
}
");
var source1 = MarkedSource(@"
using System.Collections.Generic;
namespace System.Runtime.CompilerServices
{
public class IteratorStateMachineAttribute : Attribute { public IteratorStateMachineAttribute(Type type) { } }
}
class C
{
public IEnumerable<int> F()
{
int <N:0>a = 1</N:0>;
<N:1>yield return a;</N:1>
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { Net20.References.mscorlib }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_IteratorStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.Passes);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
}
[Fact]
public void NonAsyncToAsyncLambda()
{
var source0 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public object F()
{
return new System.Func<Task<int>>(<N:2>() =>
<N:3>{
int <N:0>a = 0</N:0>;
<N:1>return Task.FromResult(a);</N:1>
}</N:3></N:2>);
}
}
");
var source1 = MarkedSource(@"
using System.Threading.Tasks;
class C
{
public object F()
{
return new System.Func<Task<int>>(<N:2>async () =>
<N:3>{
int <N:0>a = 0</N:0>;
<N:1>return await Task.FromResult(a);</N:1>
}</N:3></N:2>);
}
}
");
var compilation0 = CreateEmptyCompilation(new[] { source0.Tree }, new[] { NetFramework.mscorlib }, options: ComSafeDebugDll.WithMetadataImportOptions(MetadataImportOptions.All));
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.Passes);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
diff1.VerifySynthesizedMembers(
"C: {<>c}",
"C.<>c: {<>9__0_0, <F>b__0_0, <<F>b__0_0>d}",
"C.<>c.<<F>b__0_0>d: {<>1__state, <>t__builder, <>4__this, <a>5__1, <>s__2, <>u__1, MoveNext, SetStateMachine}");
}
[Fact]
public void AsyncMethodWithNullableParameterAddingNullCheck()
{
var source0 = MarkedSource(@"
using System;
using System.Threading.Tasks;
#nullable enable
class C
{
static T id<T>(T t) => t;
static Task<T> G<T>(Func<T> f) => Task.FromResult(f());
static T H<T>(Func<T> f) => f();
public async void F(string? x)
<N:4>{</N:4>
var <N:2>y = <N:5>await G(<N:0>() => new { A = id(x) }</N:0>)</N:5></N:2>;
var <N:3>z = H(<N:1>() => y.A</N:1>)</N:3>;
}
}
", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));
var source1 = MarkedSource(@"
using System;
using System.Threading.Tasks;
#nullable enable
class C
{
static T id<T>(T t) => t;
static Task<T> G<T>(Func<T> f) => Task.FromResult(f());
static T H<T>(Func<T> f) => f();
public async void F(string? x)
<N:4>{</N:4>
if (x is null) throw new Exception();
var <N:2>y = <N:5>await G(<N:0>() => new { A = id(x) }</N:0>)</N:5></N:2>;
var <N:3>z = H(<N:1>() => y.A</N:1>)</N:3>;
}
}
", options: CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp9));
var compilation0 = CreateCompilationWithMscorlib461(new[] { source0.Tree }, options: ComSafeDebugDll);
var compilation1 = compilation0.WithSource(source1.Tree);
Assert.NotNull(compilation0.GetWellKnownTypeMember(WellKnownMember.System_Runtime_CompilerServices_AsyncStateMachineAttribute__ctor));
var v0 = CompileAndVerify(compilation0, verify: Verification.Passes);
var md0 = ModuleMetadata.CreateFromImage(v0.EmittedAssemblyData);
var f0 = compilation0.GetMember<MethodSymbol>("C.F");
var f1 = compilation1.GetMember<MethodSymbol>("C.F");
var generation0 = CreateInitialBaseline(compilation0, md0, v0.CreateSymReader().GetEncMethodDebugInfo);
var diff1 = compilation1.EmitDifference(
generation0,
ImmutableArray.Create(
SemanticEdit.Create(SemanticEditKind.Update, f0, f1, GetSyntaxMapFromMarkers(source0, source1))));
diff1.EmitResult.Diagnostics.Verify();
diff1.VerifySynthesizedMembers(
"C.<>c__DisplayClass3_0: {x, y, <F>b__1, <F>b__0}",
"<>f__AnonymousType0<<A>j__TPar>: {Equals, GetHashCode, ToString}",
"System.Runtime.CompilerServices: {NullableAttribute, NullableContextAttribute}",
"Microsoft.CodeAnalysis: {EmbeddedAttribute}",
"Microsoft: {CodeAnalysis}",
"System.Runtime: {CompilerServices, CompilerServices}",
"C: {<>c__DisplayClass3_0, <F>d__3}",
"<global namespace>: {Microsoft, System, System}",
"System: {Runtime, Runtime}",
"C.<F>d__3: {<>1__state, <>t__builder, x, <>4__this, <>8__1, <z>5__2, <>s__3, <>u__1, MoveNext, SetStateMachine}");
diff1.VerifyIL("C.<>c__DisplayClass3_0.<F>b__1()", @"
{
// Code size 17 (0x11)
.maxstack 1
IL_0000: ldarg.0
IL_0001: ldfld ""string C.<>c__DisplayClass3_0.x""
IL_0006: call ""string C.id<string>(string)""
IL_000b: newobj ""<>f__AnonymousType0<string>..ctor(string)""
IL_0010: ret
}
");
diff1.VerifyIL("C.<>c__DisplayClass3_0.<F>b__0()", @"
{
// Code size 12 (0xc)
.maxstack 1
IL_0000: ldarg.0
IL_0001: ldfld ""<anonymous type: string A> C.<>c__DisplayClass3_0.y""
IL_0006: callvirt ""string <>f__AnonymousType0<string>.A.get""
IL_000b: ret
}
");
}
}
}
|