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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.
Imports System.Runtime.CompilerServices
Imports CompilationCreationTestHelpers
Imports Microsoft.CodeAnalysis.Test.Utilities
Imports Microsoft.CodeAnalysis.Text
Imports Microsoft.CodeAnalysis.VisualBasic
Imports Microsoft.CodeAnalysis.VisualBasic.Symbols.Metadata.PE
Imports Microsoft.CodeAnalysis.VisualBasic.Symbols
Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
Imports Roslyn.Test.Utilities
Imports Microsoft.CodeAnalysis.CSharp
Imports Basic.Reference.Assemblies
Namespace Microsoft.CodeAnalysis.VisualBasic.UnitTests.Symbols.Metadata.PE
Public Class LoadCustomModifiers : Inherits BasicTestBase
<Fact>
Public Sub Test1()
Dim assemblies = MetadataTestHelpers.GetSymbolsForReferences(
{
TestResources.SymbolsTests.CustomModifiers.Modifiers,
Net40.Resources.mscorlib
})
Dim modifiersModule = assemblies(0).Modules(0)
Dim modifiers = modifiersModule.GlobalNamespace.GetTypeMembers("Modifiers").Single()
Dim f0 = modifiers.GetMembers("F0").OfType(Of FieldSymbol)().Single()
Assert.Equal(1, f0.CustomModifiers.Length)
Dim f0Mod = f0.CustomModifiers(0)
Assert.True(f0Mod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", f0Mod.Modifier.ToTestDisplayString())
Dim m1 As MethodSymbol = modifiers.GetMembers("F1").OfType(Of MethodSymbol)().Single()
Dim p1 As ParameterSymbol = m1.Parameters(0)
Dim p2 As ParameterSymbol = modifiers.GetMembers("F2").OfType(Of MethodSymbol)().Single().Parameters(0)
Dim p4 As ParameterSymbol = modifiers.GetMembers("F4").OfType(Of MethodSymbol)().Single().Parameters(0)
Dim m5 As MethodSymbol = modifiers.GetMembers("F5").OfType(Of MethodSymbol)().Single()
Dim p5 As ParameterSymbol = m5.Parameters(0)
Dim p6 As ParameterSymbol = modifiers.GetMembers("F6").OfType(Of MethodSymbol)().Single().Parameters(0)
Dim m7 As MethodSymbol = modifiers.GetMembers("F7").OfType(Of MethodSymbol)().Single()
Assert.Equal(0, m1.ReturnTypeCustomModifiers.Length)
Assert.Equal(1, p1.CustomModifiers.Length)
Dim p1Mod = p1.CustomModifiers(0)
Assert.True(p1Mod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", p1Mod.Modifier.ToTestDisplayString())
Assert.Equal(2, p2.CustomModifiers.Length)
For Each p2Mod In p2.CustomModifiers
Assert.True(p2Mod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", p2Mod.Modifier.ToTestDisplayString())
Next
Assert.Equal("p As System.Int32 modopt(System.Int32) modopt(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst)", modifiers.GetMembers("F3").OfType(Of MethodSymbol)().Single().Parameters(0).ToTestDisplayString())
Assert.Equal("p As System.Int32 modreq(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst)", p4.ToTestDisplayString())
Assert.True(p4.HasUnsupportedMetadata)
Assert.True(p4.ContainingSymbol.HasUnsupportedMetadata)
Assert.True(m5.IsSub)
Assert.Equal(1, m5.ReturnTypeCustomModifiers.Length)
Dim m5Mod = m5.ReturnTypeCustomModifiers(0)
Assert.True(m5Mod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", m5Mod.Modifier.ToTestDisplayString())
Assert.Equal(0, p5.CustomModifiers.Length)
Dim p5Type As ArrayTypeSymbol = DirectCast(p5.Type, ArrayTypeSymbol)
Assert.Equal("System.Int32", p5Type.ElementType.ToTestDisplayString())
Assert.Equal(1, p5Type.CustomModifiers.Length)
Dim p5TypeMod = p5Type.CustomModifiers(0)
Assert.True(p5TypeMod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", p5TypeMod.Modifier.ToTestDisplayString())
Assert.Equal(0, p6.CustomModifiers.Length)
Dim p6Type As TypeSymbol = p6.Type
Assert.IsType(Of PointerTypeSymbol)(p6Type)
Assert.Equal(ERRID.ERR_UnsupportedType1, p6Type.GetUseSiteErrorInfo().Code)
Assert.False(m7.IsSub)
Assert.Equal(1, m7.ReturnTypeCustomModifiers.Length)
Dim m7Mod = m7.ReturnTypeCustomModifiers(0)
Assert.True(m7Mod.IsOptional)
Assert.Equal("System.Runtime.CompilerServices.IsConst", m7Mod.Modifier.ToTestDisplayString())
End Sub
<Fact>
Public Sub UnmanagedConstraint_RejectedSymbol_OnClass()
Dim reference = CreateCSharpCompilation("
public class TestRef<T> where T : unmanaged
{
}", parseOptions:=New CSharpParseOptions(CSharp.LanguageVersion.Latest)).EmitToImageReference()
Dim source =
<compilation>
<file>
Class Test
Shared Sub Main()
Dim x = New TestRef(Of String)()
End Sub
End Class
</file>
</compilation>
Dim compilation = CreateCompilationWithMscorlib45AndVBRuntime(source, references:={reference})
AssertTheseDiagnostics(compilation, <expected>
BC30649: '' is an unsupported type.
Dim x = New TestRef(Of String)()
~~~~~~
BC32044: Type argument 'String' does not inherit from or implement the constraint type '?'.
Dim x = New TestRef(Of String)()
~~~~~~
BC32105: Type argument 'String' does not satisfy the 'Structure' constraint for type parameter 'T'.
Dim x = New TestRef(Of String)()
~~~~~~
</expected>)
Dim badTypeParameter = compilation.GetTypeByMetadataName("TestRef`1").TypeParameters.Single()
Assert.True(badTypeParameter.HasValueTypeConstraint)
End Sub
<Fact>
Public Sub UnmanagedConstraint_RejectedSymbol_OnMethod()
Dim reference = CreateCSharpCompilation("
public class TestRef
{
public void M<T>() where T : unmanaged
{
}
}", parseOptions:=New CSharpParseOptions(CSharp.LanguageVersion.Latest)).EmitToImageReference()
Dim source =
<compilation>
<file>
Class Test
Shared Sub Main()
Dim x = New TestRef()
x.M(Of String)()
End Sub
End Class
</file>
</compilation>
Dim compilation = CreateCompilationWithMscorlib45AndVBRuntime(source, references:={reference})
AssertTheseDiagnostics(compilation, <expected>
BC30649: '' is an unsupported type.
x.M(Of String)()
~~~~~~~~~~~~~~~~
</expected>)
Dim badTypeParameter = compilation.GetTypeByMetadataName("TestRef").GetMethod("M").TypeParameters.Single()
Assert.True(badTypeParameter.HasValueTypeConstraint)
End Sub
<Fact>
Public Sub UnmanagedConstraint_RejectedSymbol_OnDelegate()
Dim reference = CreateCSharpCompilation("
public delegate T D<T>() where T : unmanaged;
", parseOptions:=New CSharpParseOptions(CSharp.LanguageVersion.Latest)).EmitToImageReference()
Dim source =
<compilation>
<file>
Class Test
Shared Sub Main(del As D(Of String))
End Sub
End Class
</file>
</compilation>
Dim compilation = CreateCompilationWithMscorlib45AndVBRuntime(source, references:={reference})
AssertTheseDiagnostics(compilation, <expected>
BC30649: '' is an unsupported type.
Shared Sub Main(del As D(Of String))
~~~
BC32044: Type argument 'String' does not inherit from or implement the constraint type '?'.
Shared Sub Main(del As D(Of String))
~~~
BC32105: Type argument 'String' does not satisfy the 'Structure' constraint for type parameter 'T'.
Shared Sub Main(del As D(Of String))
~~~
</expected>)
Dim badTypeParameter = compilation.GetTypeByMetadataName("D`1").TypeParameters.Single()
Assert.True(badTypeParameter.HasValueTypeConstraint)
End Sub
End Class
End Namespace
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