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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 Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.CSharp.UnitTests
{
public class IOperationTests_ITupleExpression : SemanticModelTestBase
{
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NoConversions()
{
string source = @"
using System;
class C
{
static void Main()
{
(int, int) t = /*<bind>*/(1, 2)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NoConversions_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/(int, int) t = (1, 2);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(int, int) t = (1, 2);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(int, int) t = (1, 2)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int32, System.Int32) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (1, 2)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (1, 2)')
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversions()
{
string source = @"
using System;
class C
{
static void Main()
{
(uint, uint) t = /*<bind>*/(1, 2)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32, System.UInt32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 2, IsImplicit) (Syntax: '2')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversions_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/(uint, uint) t = (1, 2);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(uint, uint) t = (1, 2);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(uint, uint) t = (1, 2)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.UInt32, System.UInt32) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (1, 2)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (1, 2)')
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32, System.UInt32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 2, IsImplicit) (Syntax: '2')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionsWithTypedExpression_01()
{
string source = @"
using System;
class C
{
static void Main()
{
int a = 1;
int b = 2;
(long, long) t = /*<bind>*/(a, b)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int64 a, System.Int64 b)) (Syntax: '(a, b)')
NaturalType: (System.Int32 a, System.Int32 b)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'a')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: a (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'a')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'b')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: b (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'b')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionsWithTypedExpression_02()
{
string source = @"
using System;
class C
{
static void Main()
{
int a = 1;
int b = 2;
(long, long) t /*<bind>*/= (a, b)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (a, b)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int64, System.Int64), IsImplicit) (Syntax: '(a, b)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int64 a, System.Int64 b)) (Syntax: '(a, b)')
NaturalType: (System.Int32 a, System.Int32 b)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'a')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: a (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'a')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'b')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: b (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'b')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionsWithTypedExpression_03()
{
string source = @"
using System;
class C
{
static void Main()
{
int a = 1;
int b = 2;
(long a, long b) t /*<bind>*/= (a, b)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (a, b)')
ITupleOperation (OperationKind.Tuple, Type: (System.Int64 a, System.Int64 b)) (Syntax: '(a, b)')
NaturalType: (System.Int32 a, System.Int32 b)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'a')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: a (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'a')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'b')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: b (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'b')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<EqualsValueClauseSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionsWithTypedExpression_WithParentDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
int a = 1;
int b = 2;
/*<bind>*/(long, long) t = (a, b);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(long, long) t = (a, b);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(long, long) t = (a, b)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int64, System.Int64) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (a, b)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (a, b)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int64, System.Int64), IsImplicit) (Syntax: '(a, b)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int64 a, System.Int64 b)) (Syntax: '(a, b)')
NaturalType: (System.Int32 a, System.Int32 b)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'a')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: a (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'a')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, IsImplicit) (Syntax: 'b')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILocalReferenceOperation: b (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'b')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionFromNull()
{
string source = @"
using System;
class C
{
static void Main()
{
(uint, string) t = /*<bind>*/(1, null)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32, System.String)) (Syntax: '(1, null)')
NaturalType: null
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_ImplicitConversionFromNull_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/(uint, string) t = (1, null);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(uint, stri ... (1, null);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(uint, stri ... = (1, null)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.UInt32, System.String) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (1, null)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (1, null)')
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32, System.String)) (Syntax: '(1, null)')
NaturalType: null
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.UInt32, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElements()
{
string source = @"
using System;
class C
{
static void Main()
{
var t = /*<bind>*/(A: 1, B: 2)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 A, System.Int32 B)) (Syntax: '(A: 1, B: 2)')
NaturalType: (System.Int32 A, System.Int32 B)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElements_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/var t = (A: 1, B: 2);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: 'var t = (A: 1, B: 2);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: 'var t = (A: 1, B: 2)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int32 A, System.Int32 B) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (A: 1, B: 2)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (A: 1, B: 2)')
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 A, System.Int32 B)) (Syntax: '(A: 1, B: 2)')
NaturalType: (System.Int32 A, System.Int32 B)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElementsInTupleType()
{
string source = @"
using System;
class C
{
static void Main()
{
(int A, int B) t = /*<bind>*/(1, 2)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElementsInTupleType_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/(int A, int B) t = (1, 2);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(int A, int ... t = (1, 2);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(int A, int ... t = (1, 2)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int32 A, System.Int32 B) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (1, 2)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (1, 2)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int32 A, System.Int32 B), IsImplicit) (Syntax: '(1, 2)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElementsAndImplicitConversions()
{
string source = @"
using System;
class C
{
static void Main()
{
(short, string) t = /*<bind>*/(A: 1, B: null)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int16 A, System.String B)) (Syntax: '(A: 1, B: null)')
NaturalType: null
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int16, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS8123: The tuple element name 'A' is ignored because a different name or no name is specified by the target type '(short, string)'.
// (short, string) t = /*<bind>*/(A: 1, B: null)/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "A: 1").WithArguments("A", "(short, string)").WithLocation(8, 40),
// CS8123: The tuple element name 'B' is ignored because a different name or no name is specified by the target type '(short, string)'.
// (short, string) t = /*<bind>*/(A: 1, B: null)/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "B: null").WithArguments("B", "(short, string)").WithLocation(8, 46)
};
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_NamedElementsAndImplicitConversions_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
static void Main()
{
/*<bind>*/(short, string) t = (A: 1, B: null);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(short, str ... , B: null);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(short, str ... 1, B: null)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int16, System.String) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (A: 1, B: null)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (A: 1, B: null)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int16, System.String), IsImplicit) (Syntax: '(A: 1, B: null)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int16 A, System.String B)) (Syntax: '(A: 1, B: null)')
NaturalType: null
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int16, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
Initializer:
null
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS8123: The tuple element name 'A' is ignored because a different name or no name is specified by the target type '(short, string)'.
// /*<bind>*/(short, string) t = (A: 1, B: null)/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "A: 1").WithArguments("A", "(short, string)").WithLocation(8, 40),
// CS8123: The tuple element name 'B' is ignored because a different name or no name is specified by the target type '(short, string)'.
// /*<bind>*/(short, string) t = (A: 1, B: null)/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "B: null").WithArguments("B", "(short, string)").WithLocation(8, 46)
};
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionsForArguments()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C(int value)
{
return new C(value);
}
public static implicit operator short(C c)
{
return (short)c._x;
}
public static implicit operator string(C c)
{
return c._x.ToString();
}
public void M(C c1)
{
(short, string) t = /*<bind>*/(new C(0), c1)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int16, System.String c1)) (Syntax: '(new C(0), c1)')
NaturalType: (C, C c1)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.Int16 C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.Int16, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int16 C.op_Implicit(C c))
Operand:
IObjectCreationOperation (Constructor: C..ctor(System.Int32 x)) (OperationKind.ObjectCreation, Type: C) (Syntax: 'new C(0)')
Arguments(1):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.String C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.String, IsImplicit) (Syntax: 'c1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.String C.op_Implicit(C c))
Operand:
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionsForArguments_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C(int value)
{
return new C(value);
}
public static implicit operator short(C c)
{
return (short)c._x;
}
public static implicit operator string(C c)
{
return c._x.ToString();
}
public void M(C c1)
{
/*<bind>*/(short, string) t = (new C(0), c1);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(short, str ... C(0), c1);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(short, str ... w C(0), c1)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int16, System.String) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (new C(0), c1)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (new C(0), c1)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int16, System.String), IsImplicit) (Syntax: '(new C(0), c1)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int16, System.String c1)) (Syntax: '(new C(0), c1)')
NaturalType: (C, C c1)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.Int16 C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.Int16, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int16 C.op_Implicit(C c))
Operand:
IObjectCreationOperation (Constructor: C..ctor(System.Int32 x)) (OperationKind.ObjectCreation, Type: C) (Syntax: 'new C(0)')
Arguments(1):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.String C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.String, IsImplicit) (Syntax: 'c1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.String C.op_Implicit(C c))
Operand:
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionFromTupleExpression()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C((int, string) x)
{
return new C(x.Item1);
}
public static implicit operator (int, string) (C c)
{
return (c._x, c._x.ToString());
}
public void M(C c1)
{
C t = /*<bind>*/(0, null)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.String)) (Syntax: '(0, null)')
NaturalType: null
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionFromTupleExpression_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C((int, string) x)
{
return new C(x.Item1);
}
public static implicit operator (int, string) (C c)
{
return (c._x, c._x.ToString());
}
public void M(C c1)
{
/*<bind>*/C t = (0, null);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: 'C t = (0, null);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: 'C t = (0, null)')
Declarators:
IVariableDeclaratorOperation (Symbol: C t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = (0, null)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= (0, null)')
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: C C.op_Implicit((System.Int32, System.String) x)) (OperationKind.Conversion, Type: C, IsImplicit) (Syntax: '(0, null)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: C C.op_Implicit((System.Int32, System.String) x))
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.String)) (Syntax: '(0, null)')
NaturalType: null
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.String, Constant: null, IsImplicit) (Syntax: 'null')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: null, Constant: null) (Syntax: 'null')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionToTupleType()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C((int, string) x)
{
return new C(x.Item1);
}
public static implicit operator (int, string) (C c)
{
return (c._x, c._x.ToString());
}
public void M(C c1)
{
(int, string) t = /*<bind>*/c1/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<IdentifierNameSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_UserDefinedConversionToTupleType_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C((int, string) x)
{
return new C(x.Item1);
}
public static implicit operator (int, string) (C c)
{
return (c._x, c._x.ToString());
}
public void M(C c1)
{
/*<bind>*/(int, string) t = c1;/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null) (Syntax: '(int, string) t = c1;')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null) (Syntax: '(int, string) t = c1')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int32, System.String) t) (OperationKind.VariableDeclarator, Type: null) (Syntax: 't = c1')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null) (Syntax: '= c1')
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: (System.Int32, System.String) C.op_Implicit(C c)) (OperationKind.Conversion, Type: (System.Int32, System.String), IsImplicit) (Syntax: 'c1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: (System.Int32, System.String) C.op_Implicit(C c))
Operand:
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_InvalidConversion()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C(int value)
{
return new C(value);
}
public static implicit operator int(C c)
{
return (short)c._x;
}
public static implicit operator string(C c)
{
return c._x.ToString();
}
public void M(C c1)
{
(short, string) t = /*<bind>*/(new C(0), c1)/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
ITupleOperation (OperationKind.Tuple, Type: (System.Int16, System.String c1), IsInvalid) (Syntax: '(new C(0), c1)')
NaturalType: (C, C c1)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int16, IsInvalid, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.Int32 C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.Int32, IsInvalid, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int32 C.op_Implicit(C c))
Operand:
IObjectCreationOperation (Constructor: C..ctor(System.Int32 x)) (OperationKind.ObjectCreation, Type: C, IsInvalid) (Syntax: 'new C(0)')
Arguments(1):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null, IsInvalid) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0, IsInvalid) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.String C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.String, IsImplicit) (Syntax: 'c1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.String C.op_Implicit(C c))
Operand:
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0029: Cannot implicitly convert type 'C' to 'short'
// (short, string) t = /*<bind>*/(new C(0), c1)/*</bind>*/;
Diagnostic(ErrorCode.ERR_NoImplicitConv, "new C(0)").WithArguments("C", "short").WithLocation(29, 40)
};
VerifyOperationTreeAndDiagnosticsForTest<TupleExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_InvalidConversion_ParentVariableDeclaration()
{
string source = @"
using System;
class C
{
private readonly int _x;
public C(int x)
{
_x = x;
}
public static implicit operator C(int value)
{
return new C(value);
}
public static implicit operator int(C c)
{
return (short)c._x;
}
public static implicit operator string(C c)
{
return c._x.ToString();
}
public void M(C c1)
{
/*<bind>*/(short, string) t = (new C(0), c1);/*</bind>*/
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IVariableDeclarationGroupOperation (1 declarations) (OperationKind.VariableDeclarationGroup, Type: null, IsInvalid) (Syntax: '(short, str ... C(0), c1);')
IVariableDeclarationOperation (1 declarators) (OperationKind.VariableDeclaration, Type: null, IsInvalid) (Syntax: '(short, str ... w C(0), c1)')
Declarators:
IVariableDeclaratorOperation (Symbol: (System.Int16, System.String) t) (OperationKind.VariableDeclarator, Type: null, IsInvalid) (Syntax: 't = (new C(0), c1)')
Initializer:
IVariableInitializerOperation (OperationKind.VariableInitializer, Type: null, IsInvalid) (Syntax: '= (new C(0), c1)')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int16, System.String), IsInvalid, IsImplicit) (Syntax: '(new C(0), c1)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int16, System.String c1), IsInvalid) (Syntax: '(new C(0), c1)')
NaturalType: (C, C c1)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int16, IsInvalid, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.Int32 C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.Int32, IsInvalid, IsImplicit) (Syntax: 'new C(0)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.Int32 C.op_Implicit(C c))
Operand:
IObjectCreationOperation (Constructor: C..ctor(System.Int32 x)) (OperationKind.ObjectCreation, Type: C, IsInvalid) (Syntax: 'new C(0)')
Arguments(1):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null, IsInvalid) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0, IsInvalid) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
IConversionOperation (TryCast: False, Unchecked) (OperatorMethod: System.String C.op_Implicit(C c)) (OperationKind.Conversion, Type: System.String, IsImplicit) (Syntax: 'c1')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: True) (MethodSymbol: System.String C.op_Implicit(C c))
Operand:
IParameterReferenceOperation: c1 (OperationKind.ParameterReference, Type: C) (Syntax: 'c1')
Initializer:
null
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0029: Cannot implicitly convert type 'C' to 'short'
// /*<bind>*/(short, string) t = (new C(0), c1)/*</bind>*/;
Diagnostic(ErrorCode.ERR_NoImplicitConv, "new C(0)").WithArguments("C", "short").WithLocation(29, 40)
};
VerifyOperationTreeAndDiagnosticsForTest<LocalDeclarationStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_Deconstruction()
{
string source = @"
class Point
{
public int X { get; }
public int Y { get; }
public Point(int x, int y)
{
X = x;
Y = y;
}
public void Deconstruct(out int x, out int y)
{
x = X;
y = Y;
}
}
class Class1
{
public void M()
{
/*<bind>*/var (x, y) = new Point(0, 1)/*</bind>*/;
}
}
";
string expectedOperationTree = @"
IDeconstructionAssignmentOperation (OperationKind.DeconstructionAssignment, Type: (System.Int32 x, System.Int32 y)) (Syntax: 'var (x, y) ... Point(0, 1)')
Left:
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: (System.Int32 x, System.Int32 y)) (Syntax: 'var (x, y)')
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 x, System.Int32 y)) (Syntax: '(x, y)')
NaturalType: (System.Int32 x, System.Int32 y)
Elements(2):
ILocalReferenceOperation: x (IsDeclaration: True) (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'x')
ILocalReferenceOperation: y (IsDeclaration: True) (OperationKind.LocalReference, Type: System.Int32) (Syntax: 'y')
Right:
IObjectCreationOperation (Constructor: Point..ctor(System.Int32 x, System.Int32 y)) (OperationKind.ObjectCreation, Type: Point) (Syntax: 'new Point(0, 1)')
Arguments(2):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: y) (OperationKind.Argument, Type: null) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<AssignmentExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_Deconstruction_ForEach()
{
string source = @"
class Point
{
public int X { get; }
public int Y { get; }
public Point(int x, int y)
{
X = x;
Y = y;
}
public void Deconstruct(out uint x, out uint y)
{
x = 0;
y = 0;
}
}
class Class1
{
public void M()
{
/*<bind>*/foreach (var (x, y) in new Point[]{ new Point(0, 1) })
{
}/*</bind>*/
}
}
";
string expectedOperationTree = @"
IForEachLoopOperation (LoopKind.ForEach, Continue Label Id: 0, Exit Label Id: 1) (OperationKind.Loop, Type: null) (Syntax: 'foreach (va ... }')
Locals: Local_1: System.UInt32 x
Local_2: System.UInt32 y
LoopControlVariable:
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: (System.UInt32 x, System.UInt32 y)) (Syntax: 'var (x, y)')
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32 x, System.UInt32 y)) (Syntax: '(x, y)')
NaturalType: (System.UInt32 x, System.UInt32 y)
Elements(2):
ILocalReferenceOperation: x (IsDeclaration: True) (OperationKind.LocalReference, Type: System.UInt32) (Syntax: 'x')
ILocalReferenceOperation: y (IsDeclaration: True) (OperationKind.LocalReference, Type: System.UInt32) (Syntax: 'y')
Collection:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Collections.IEnumerable, IsImplicit) (Syntax: 'new Point[] ... int(0, 1) }')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: True, IsUserDefined: False) (MethodSymbol: null)
Operand:
IArrayCreationOperation (OperationKind.ArrayCreation, Type: Point[]) (Syntax: 'new Point[] ... int(0, 1) }')
Dimension Sizes(1):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1, IsImplicit) (Syntax: 'new Point[] ... int(0, 1) }')
Initializer:
IArrayInitializerOperation (1 elements) (OperationKind.ArrayInitializer, Type: null) (Syntax: '{ new Point(0, 1) }')
Element Values(1):
IObjectCreationOperation (Constructor: Point..ctor(System.Int32 x, System.Int32 y)) (OperationKind.ObjectCreation, Type: Point) (Syntax: 'new Point(0, 1)')
Arguments(2):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: y) (OperationKind.Argument, Type: null) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
Body:
IBlockOperation (0 statements) (OperationKind.Block, Type: null) (Syntax: '{ ... }')
NextVariables(0)
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<ForEachVariableStatementSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact, WorkItem(10856, "https://github.com/dotnet/roslyn/issues/10856")]
public void TupleExpression_DeconstructionWithConversion()
{
string source = @"
class Point
{
public int X { get; }
public int Y { get; }
public Point(int x, int y)
{
X = x;
Y = y;
}
public void Deconstruct(out uint x, out uint y)
{
x = 0;
y = 0;
}
}
class Class1
{
public void M()
{
/*<bind>*/(uint x, uint y) = new Point(0, 1)/*</bind>*/;
}
}
";
string expectedOperationTree = @"
IDeconstructionAssignmentOperation (OperationKind.DeconstructionAssignment, Type: (System.UInt32 x, System.UInt32 y)) (Syntax: '(uint x, ui ... Point(0, 1)')
Left:
ITupleOperation (OperationKind.Tuple, Type: (System.UInt32 x, System.UInt32 y)) (Syntax: '(uint x, uint y)')
NaturalType: (System.UInt32 x, System.UInt32 y)
Elements(2):
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: System.UInt32) (Syntax: 'uint x')
ILocalReferenceOperation: x (IsDeclaration: True) (OperationKind.LocalReference, Type: System.UInt32) (Syntax: 'x')
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: System.UInt32) (Syntax: 'uint y')
ILocalReferenceOperation: y (IsDeclaration: True) (OperationKind.LocalReference, Type: System.UInt32) (Syntax: 'y')
Right:
IObjectCreationOperation (Constructor: Point..ctor(System.Int32 x, System.Int32 y)) (OperationKind.ObjectCreation, Type: Point) (Syntax: 'new Point(0, 1)')
Arguments(2):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: x) (OperationKind.Argument, Type: null) (Syntax: '0')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 0) (Syntax: '0')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: y) (OperationKind.Argument, Type: null) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Initializer:
null
";
var expectedDiagnostics = DiagnosticDescription.None;
VerifyOperationTreeAndDiagnosticsForTest<AssignmentExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation)]
[Fact]
public void ExplicitConversionOfANestedTuple_01()
{
string source = @"
using System;
class C
{
static void Main()
{
var t = /*<bind>*/((int, (long c, int d)))(1, (a: 2, b: 3))/*</bind>*/;
Console.WriteLine(t);
}
}
";
string expectedOperationTree = @"
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int32, (System.Int64 c, System.Int32 d))) (Syntax: '((int, (lon ... : 2, b: 3))')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, (System.Int64 c, System.Int32 d))) (Syntax: '(1, (a: 2, b: 3))')
NaturalType: (System.Int32, (System.Int32 a, System.Int32 b))
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int32, Constant: 1, IsImplicit) (Syntax: '1')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int64 c, System.Int32 d), IsImplicit) (Syntax: '(a: 2, b: 3)')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int64 a, System.Int32 b)) (Syntax: '(a: 2, b: 3)')
NaturalType: (System.Int32 a, System.Int32 b)
Elements(2):
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int64, Constant: 2, IsImplicit) (Syntax: '2')
Conversion: CommonConversion (Exists: True, IsIdentity: False, IsNumeric: True, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: System.Int32, Constant: 3, IsImplicit) (Syntax: '3')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Operand:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 3) (Syntax: '3')
";
var expectedDiagnostics = new DiagnosticDescription[] {
// (8,56): warning CS8123: The tuple element name 'a' is ignored because a different name or no name is specified by the target type '(long c, int d)'.
// var t = /*<bind>*/((int, (long c, int d)))(1, (a: 2, b: 3))/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "a: 2").WithArguments("a", "(long c, int d)").WithLocation(8, 56),
// (8,62): warning CS8123: The tuple element name 'b' is ignored because a different name or no name is specified by the target type '(long c, int d)'.
// var t = /*<bind>*/((int, (long c, int d)))(1, (a: 2, b: 3))/*</bind>*/;
Diagnostic(ErrorCode.WRN_TupleLiteralNameMismatch, "b: 3").WithArguments("b", "(long c, int d)").WithLocation(8, 62)
};
VerifyOperationTreeAndDiagnosticsForTest<CastExpressionSyntax>(source, expectedOperationTree, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_01()
{
string source = @"
class C
{
void M(bool b)
/*<bind>*/{
(int, int) t = (1, b ? 2 : 3);
}/*</bind>*/
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0219: The variable 't' is assigned but its value is never used
// (int, int) t = (1, b ? 2 : 3);
Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "t").WithArguments("t").WithLocation(6, 20)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
Locals: [(System.Int32, System.Int32) t]
CaptureIds: [0] [1]
Block[B1] - Block
Predecessors: [B0]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '1')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '2')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '3')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 3) (Syntax: '3')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: (System.Int32, System.Int32), IsImplicit) (Syntax: 't = (1, b ? 2 : 3)')
Left:
ILocalReferenceOperation: t (IsDeclaration: True) (OperationKind.LocalReference, Type: (System.Int32, System.Int32), IsImplicit) (Syntax: 't = (1, b ? 2 : 3)')
Right:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, b ? 2 : 3)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: System.Int32, Constant: 1, IsImplicit) (Syntax: '1')
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'b ? 2 : 3')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_02()
{
string source = @"
class C
{
void M(bool b)
/*<bind>*/{
var t = (1, (2, b ? 2 : 3));
}/*</bind>*/
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0219: The variable 't' is assigned but its value is never used
// var t = (1, (2, b ? 2 : 3));
Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "t").WithArguments("t").WithLocation(6, 13)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
Locals: [(System.Int32, (System.Int32, System.Int32)) t]
CaptureIds: [0] [1] [2]
Block[B1] - Block
Predecessors: [B0]
Statements (2)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '1')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '2')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 2 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '2')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 2 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '3')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 3) (Syntax: '3')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: (System.Int32, (System.Int32, System.Int32)), IsImplicit) (Syntax: 't = (1, (2, b ? 2 : 3))')
Left:
ILocalReferenceOperation: t (IsDeclaration: True) (OperationKind.LocalReference, Type: (System.Int32, (System.Int32, System.Int32)), IsImplicit) (Syntax: 't = (1, (2, b ? 2 : 3))')
Right:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, (System.Int32, System.Int32))) (Syntax: '(1, (2, b ? 2 : 3))')
NaturalType: (System.Int32, (System.Int32, System.Int32))
Elements(2):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: System.Int32, Constant: 1, IsImplicit) (Syntax: '1')
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(2, b ? 2 : 3)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, Constant: 2, IsImplicit) (Syntax: '2')
IFlowCaptureReferenceOperation: 2 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'b ? 2 : 3')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_03()
{
string source = @"
class C
{
void M(bool b)
/*<bind>*/{
M2((1, b ? 1 : 2));
}/*</bind>*/
void M2((int, int) arg) { }
}
";
var expectedDiagnostics = DiagnosticDescription.None;
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
CaptureIds: [0] [1] [2]
Block[B1] - Block
Predecessors: [B0]
Statements (2)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'M2')
Value:
IInstanceReferenceOperation (ReferenceKind: ContainingTypeInstance) (OperationKind.InstanceReference, Type: C, IsImplicit) (Syntax: 'M2')
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '1')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 2 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '1')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 2 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '2')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null) (Syntax: 'M2((1, b ? 1 : 2));')
Expression:
IInvocationOperation ( void C.M2((System.Int32, System.Int32) arg)) (OperationKind.Invocation, Type: System.Void) (Syntax: 'M2((1, b ? 1 : 2))')
Instance Receiver:
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: C, IsImplicit) (Syntax: 'M2')
Arguments(1):
IArgumentOperation (ArgumentKind.Explicit, Matching Parameter: arg) (OperationKind.Argument, Type: null) (Syntax: '(1, b ? 1 : 2)')
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, b ? 1 : 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, Constant: 1, IsImplicit) (Syntax: '1')
IFlowCaptureReferenceOperation: 2 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'b ? 1 : 2')
InConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
OutConversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_04()
{
string source = @"
class C
{
void M(bool b, int i1, int i2, int i3)
/*<bind>*/{
(i1, b ? i2 : i3) = (1, 2);
}/*</bind>*/
void M2((int, int) arg) { }
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0131: The left-hand side of an assignment must be a variable, property or indexer
// (i1, b ? i2 : i3) = (1, 2);
Diagnostic(ErrorCode.ERR_AssgLvalueExpected, "b ? i2 : i3").WithLocation(6, 14)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
CaptureIds: [0] [1]
Block[B1] - Block
Predecessors: [B0]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i1')
Value:
IParameterReferenceOperation: i1 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i1')
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean, IsInvalid) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: 'i2')
Value:
IParameterReferenceOperation: i2 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: 'i3')
Value:
IParameterReferenceOperation: i3 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i3')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null, IsInvalid) (Syntax: '(i1, b ? i2 ... ) = (1, 2);')
Expression:
IDeconstructionAssignmentOperation (OperationKind.DeconstructionAssignment, Type: (System.Int32 i1, System.Int32), IsInvalid) (Syntax: '(i1, b ? i2 ... 3) = (1, 2)')
Left:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i1, System.Int32), IsInvalid) (Syntax: '(i1, b ? i2 : i3)')
NaturalType: (System.Int32 i1, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'i1')
IInvalidOperation (OperationKind.Invalid, Type: System.Int32, IsInvalid, IsImplicit) (Syntax: 'b ? i2 : i3')
Children(1):
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, IsInvalid, IsImplicit) (Syntax: 'b ? i2 : i3')
Right:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_05()
{
string source = @"
class C
{
void M(bool b, int i1, int i2, int i3)
/*<bind>*/{
(i1, b ? ref i2 : ref i3) = (1, 2);
}/*</bind>*/
void M2((int, int) arg) { }
}
";
var expectedDiagnostics = DiagnosticDescription.None;
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
CaptureIds: [0] [1]
Block[B1] - Block
Predecessors: [B0]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i1')
Value:
IParameterReferenceOperation: i1 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i1')
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i2')
Value:
IParameterReferenceOperation: i2 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i3')
Value:
IParameterReferenceOperation: i3 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i3')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null) (Syntax: '(i1, b ? re ... ) = (1, 2);')
Expression:
IDeconstructionAssignmentOperation (OperationKind.DeconstructionAssignment, Type: (System.Int32 i1, System.Int32)) (Syntax: '(i1, b ? re ... 3) = (1, 2)')
Left:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i1, System.Int32)) (Syntax: '(i1, b ? re ... 2 : ref i3)')
NaturalType: (System.Int32 i1, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'i1')
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'b ? ref i2 : ref i3')
Right:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_06()
{
string source = @"
class C
{
void M(bool b)
/*<bind>*/{
(int, int) t = (b ? 2 : 3, 1);
}/*</bind>*/
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0219: The variable 't' is assigned but its value is never used
// (int, int) t = (b ? 2 : 3, 1);
Diagnostic(ErrorCode.WRN_UnreferencedVarAssg, "t").WithArguments("t").WithLocation(6, 20)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
Locals: [(System.Int32, System.Int32) t]
CaptureIds: [0]
Block[B1] - Block
Predecessors: [B0]
Statements (0)
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '2')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: '3')
Value:
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 3) (Syntax: '3')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: (System.Int32, System.Int32), IsImplicit) (Syntax: 't = (b ? 2 : 3, 1)')
Left:
ILocalReferenceOperation: t (IsDeclaration: True) (OperationKind.LocalReference, Type: (System.Int32, System.Int32), IsImplicit) (Syntax: 't = (b ? 2 : 3, 1)')
Right:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(b ? 2 : 3, 1)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'b ? 2 : 3')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_07()
{
string source = @"
class C
{
void M(bool b, int i1, int i2, int i3, int i4, int i5, int i6)
/*<bind>*/{
(b ? (i1, i2) : (i3, i4)) = (i5, i6);
}/*</bind>*/
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS0131: The left-hand side of an assignment must be a variable, property or indexer
// (b ? (i1, i2) : (i3, i4)) = (i5, i6);
Diagnostic(ErrorCode.ERR_AssgLvalueExpected, "b ? (i1, i2) : (i3, i4)").WithLocation(6, 10)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
CaptureIds: [0]
Block[B1] - Block
Predecessors: [B0]
Statements (0)
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean, IsInvalid) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: '(i1, i2)')
Value:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int32, System.Int32), IsInvalid, IsImplicit) (Syntax: '(i1, i2)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i1, System.Int32 i2), IsInvalid) (Syntax: '(i1, i2)')
NaturalType: (System.Int32 i1, System.Int32 i2)
Elements(2):
IParameterReferenceOperation: i1 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i1')
IParameterReferenceOperation: i2 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: '(i3, i4)')
Value:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int32, System.Int32), IsInvalid, IsImplicit) (Syntax: '(i3, i4)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i3, System.Int32 i4), IsInvalid) (Syntax: '(i3, i4)')
NaturalType: (System.Int32 i3, System.Int32 i4)
Elements(2):
IParameterReferenceOperation: i3 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i3')
IParameterReferenceOperation: i4 (OperationKind.ParameterReference, Type: System.Int32, IsInvalid) (Syntax: 'i4')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null, IsInvalid) (Syntax: '(b ? (i1, i ... = (i5, i6);')
Expression:
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: (System.Int32, System.Int32), IsInvalid) (Syntax: '(b ? (i1, i ... = (i5, i6)')
Left:
IInvalidOperation (OperationKind.Invalid, Type: (System.Int32, System.Int32), IsInvalid, IsImplicit) (Syntax: 'b ? (i1, i2) : (i3, i4)')
Children(1):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: (System.Int32, System.Int32), IsInvalid, IsImplicit) (Syntax: 'b ? (i1, i2) : (i3, i4)')
Right:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (System.Int32, System.Int32), IsImplicit) (Syntax: '(i5, i6)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i5, System.Int32 i6)) (Syntax: '(i5, i6)')
NaturalType: (System.Int32 i5, System.Int32 i6)
Elements(2):
IParameterReferenceOperation: i5 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i5')
IParameterReferenceOperation: i6 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i6')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_08()
{
string source = @"
class C
{
void M(bool b)
/*<bind>*/{
(b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
}/*</bind>*/
}
";
var expectedDiagnostics = new DiagnosticDescription[] {
// CS8185: A declaration is not allowed in this context.
// (b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "var i1").WithLocation(6, 15),
// CS8185: A declaration is not allowed in this context.
// (b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "var i2").WithLocation(6, 23),
// CS8185: A declaration is not allowed in this context.
// (b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "var i3").WithLocation(6, 34),
// CS8185: A declaration is not allowed in this context.
// (b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "var i4").WithLocation(6, 42),
// CS0131: The left-hand side of an assignment must be a variable, property or indexer
// (b ? (var i1, var i2) : (var i3, var i4)) = (1, 2);
Diagnostic(ErrorCode.ERR_AssgLvalueExpected, "b ? (var i1, var i2) : (var i3, var i4)").WithLocation(6, 10)
};
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
Locals: [var i1] [var i2] [var i3] [var i4]
CaptureIds: [0]
Block[B1] - Block
Predecessors: [B0]
Statements (0)
Jump if False (Regular) to Block[B3]
IParameterReferenceOperation: b (OperationKind.ParameterReference, Type: System.Boolean, IsInvalid) (Syntax: 'b')
Next (Regular) Block[B2]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: '(var i1, var i2)')
Value:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (var, var), IsInvalid, IsImplicit) (Syntax: '(var i1, var i2)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (var i1, var i2), IsInvalid) (Syntax: '(var i1, var i2)')
NaturalType: (var i1, var i2)
Elements(2):
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: var, IsInvalid) (Syntax: 'var i1')
ILocalReferenceOperation: i1 (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'i1')
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: var, IsInvalid) (Syntax: 'var i2')
ILocalReferenceOperation: i2 (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'i2')
Next (Regular) Block[B4]
Block[B3] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsInvalid, IsImplicit) (Syntax: '(var i3, var i4)')
Value:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (var, var), IsInvalid, IsImplicit) (Syntax: '(var i3, var i4)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (var i3, var i4), IsInvalid) (Syntax: '(var i3, var i4)')
NaturalType: (var i3, var i4)
Elements(2):
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: var, IsInvalid) (Syntax: 'var i3')
ILocalReferenceOperation: i3 (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'i3')
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: var, IsInvalid) (Syntax: 'var i4')
ILocalReferenceOperation: i4 (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'i4')
Next (Regular) Block[B4]
Block[B4] - Block
Predecessors: [B2] [B3]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null, IsInvalid) (Syntax: '(b ? (var i ... ) = (1, 2);')
Expression:
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: (var, var), IsInvalid) (Syntax: '(b ? (var i ... )) = (1, 2)')
Left:
IInvalidOperation (OperationKind.Invalid, Type: (var, var), IsInvalid, IsImplicit) (Syntax: 'b ? (var i1 ... i3, var i4)')
Children(1):
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: (var, var), IsInvalid, IsImplicit) (Syntax: 'b ? (var i1 ... i3, var i4)')
Right:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: (var, var), IsImplicit) (Syntax: '(1, 2)')
Conversion: CommonConversion (Exists: False, IsIdentity: False, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(NoConversion)
Operand:
ITupleOperation (OperationKind.Tuple, Type: (System.Int32, System.Int32)) (Syntax: '(1, 2)')
NaturalType: (System.Int32, System.Int32)
Elements(2):
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 1) (Syntax: '1')
ILiteralOperation (OperationKind.Literal, Type: System.Int32, Constant: 2) (Syntax: '2')
Next (Regular) Block[B5]
Leaving: {R1}
}
Block[B5] - Exit
Predecessors: [B4]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_09()
{
// Nested tuple, no control flow.
string source = @"
class C
{
void M(int i1, int i2, int i3, ((int, int), int) result)
/*<bind>*/
{
result = ((i1, i2), i3);
}/*</bind>*/
}
";
var expectedDiagnostics = DiagnosticDescription.None;
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Block[B1] - Block
Predecessors: [B0]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null) (Syntax: 'result = ((i1, i2), i3);')
Expression:
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: ((System.Int32, System.Int32), System.Int32)) (Syntax: 'result = ((i1, i2), i3)')
Left:
IParameterReferenceOperation: result (OperationKind.ParameterReference, Type: ((System.Int32, System.Int32), System.Int32)) (Syntax: 'result')
Right:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: ((System.Int32, System.Int32), System.Int32), IsImplicit) (Syntax: '((i1, i2), i3)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: ((System.Int32 i1, System.Int32 i2), System.Int32 i3)) (Syntax: '((i1, i2), i3)')
NaturalType: ((System.Int32 i1, System.Int32 i2), System.Int32 i3)
Elements(2):
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i1, System.Int32 i2)) (Syntax: '(i1, i2)')
NaturalType: (System.Int32 i1, System.Int32 i2)
Elements(2):
IParameterReferenceOperation: i1 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i1')
IParameterReferenceOperation: i2 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i2')
IParameterReferenceOperation: i3 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i3')
Next (Regular) Block[B2]
Block[B2] - Exit
Predecessors: [B1]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[CompilerTrait(CompilerFeature.IOperation, CompilerFeature.Dataflow)]
[Fact]
public void TupleFlow_10()
{
// Nested tuple, verify control flow does not spill sibling tuple.
string source = @"
class C
{
void M(int i1, int i2, int? i3, int i4, ((int, int), int) result)
/*<bind>*/
{
result = ((i1, i2), i3 ?? i4);
}/*</bind>*/
}
";
var expectedDiagnostics = DiagnosticDescription.None;
string expectedFlowGraph = @"
Block[B0] - Entry
Statements (0)
Next (Regular) Block[B1]
Entering: {R1}
.locals {R1}
{
CaptureIds: [0] [1] [2] [4]
Block[B1] - Block
Predecessors: [B0]
Statements (3)
IFlowCaptureOperation: 0 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'result')
Value:
IParameterReferenceOperation: result (OperationKind.ParameterReference, Type: ((System.Int32, System.Int32), System.Int32)) (Syntax: 'result')
IFlowCaptureOperation: 1 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i1')
Value:
IParameterReferenceOperation: i1 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i1')
IFlowCaptureOperation: 2 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i2')
Value:
IParameterReferenceOperation: i2 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i2')
Next (Regular) Block[B2]
Entering: {R2}
.locals {R2}
{
CaptureIds: [3]
Block[B2] - Block
Predecessors: [B1]
Statements (1)
IFlowCaptureOperation: 3 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i3')
Value:
IParameterReferenceOperation: i3 (OperationKind.ParameterReference, Type: System.Int32?) (Syntax: 'i3')
Jump if True (Regular) to Block[B4]
IIsNullOperation (OperationKind.IsNull, Type: System.Boolean, IsImplicit) (Syntax: 'i3')
Operand:
IFlowCaptureReferenceOperation: 3 (OperationKind.FlowCaptureReference, Type: System.Int32?, IsImplicit) (Syntax: 'i3')
Leaving: {R2}
Next (Regular) Block[B3]
Block[B3] - Block
Predecessors: [B2]
Statements (1)
IFlowCaptureOperation: 4 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i3')
Value:
IInvocationOperation ( System.Int32 System.Int32?.GetValueOrDefault()) (OperationKind.Invocation, Type: System.Int32, IsImplicit) (Syntax: 'i3')
Instance Receiver:
IFlowCaptureReferenceOperation: 3 (OperationKind.FlowCaptureReference, Type: System.Int32?, IsImplicit) (Syntax: 'i3')
Arguments(0)
Next (Regular) Block[B5]
Leaving: {R2}
}
Block[B4] - Block
Predecessors: [B2]
Statements (1)
IFlowCaptureOperation: 4 (OperationKind.FlowCapture, Type: null, IsImplicit) (Syntax: 'i4')
Value:
IParameterReferenceOperation: i4 (OperationKind.ParameterReference, Type: System.Int32) (Syntax: 'i4')
Next (Regular) Block[B5]
Block[B5] - Block
Predecessors: [B3] [B4]
Statements (1)
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null) (Syntax: 'result = (( ... i3 ?? i4);')
Expression:
ISimpleAssignmentOperation (OperationKind.SimpleAssignment, Type: ((System.Int32, System.Int32), System.Int32)) (Syntax: 'result = (( ... , i3 ?? i4)')
Left:
IFlowCaptureReferenceOperation: 0 (OperationKind.FlowCaptureReference, Type: ((System.Int32, System.Int32), System.Int32), IsImplicit) (Syntax: 'result')
Right:
IConversionOperation (TryCast: False, Unchecked) (OperationKind.Conversion, Type: ((System.Int32, System.Int32), System.Int32), IsImplicit) (Syntax: '((i1, i2), i3 ?? i4)')
Conversion: CommonConversion (Exists: True, IsIdentity: True, IsNumeric: False, IsReference: False, IsUserDefined: False) (MethodSymbol: null)
(Identity)
Operand:
ITupleOperation (OperationKind.Tuple, Type: ((System.Int32 i1, System.Int32 i2), System.Int32)) (Syntax: '((i1, i2), i3 ?? i4)')
NaturalType: ((System.Int32 i1, System.Int32 i2), System.Int32)
Elements(2):
ITupleOperation (OperationKind.Tuple, Type: (System.Int32 i1, System.Int32 i2)) (Syntax: '(i1, i2)')
NaturalType: (System.Int32 i1, System.Int32 i2)
Elements(2):
IFlowCaptureReferenceOperation: 1 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'i1')
IFlowCaptureReferenceOperation: 2 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'i2')
IFlowCaptureReferenceOperation: 4 (OperationKind.FlowCaptureReference, Type: System.Int32, IsImplicit) (Syntax: 'i3 ?? i4')
Next (Regular) Block[B6]
Leaving: {R1}
}
Block[B6] - Exit
Predecessors: [B5]
Statements (0)
";
VerifyFlowGraphAndDiagnosticsForTest<BlockSyntax>(source, expectedFlowGraph, expectedDiagnostics);
}
[Fact]
public void UnexpectedTupleExpressionRecovery()
{
var source = @"
class C
{
static void Main()
{
/*<bind>*/(var ((a,b), c), int d);/*</bind>*/
}
}";
var expectedDiagnostics = new[]
{
// file.cs(6,19): error CS0201: Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement
// /*<bind>*/(var ((a,b), c), int d);/*</bind>*/
Diagnostic(ErrorCode.ERR_IllegalStatement, "(var ((a,b), c), int d)").WithLocation(6, 19),
// file.cs(6,20): error CS8185: A declaration is not allowed in this context.
// /*<bind>*/(var ((a,b), c), int d);/*</bind>*/
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "var ((a,b), c)").WithLocation(6, 20),
// file.cs(6,36): error CS8185: A declaration is not allowed in this context.
// /*<bind>*/(var ((a,b), c), int d);/*</bind>*/
Diagnostic(ErrorCode.ERR_DeclarationExpressionNotPermitted, "int d").WithLocation(6, 36),
// file.cs(6,36): error CS0165: Use of unassigned local variable 'd'
// /*<bind>*/(var ((a,b), c), int d);/*</bind>*/
Diagnostic(ErrorCode.ERR_UseDefViolation, "int d").WithArguments("d").WithLocation(6, 36)
};
var expectedTree = @"
IExpressionStatementOperation (OperationKind.ExpressionStatement, Type: null, IsInvalid) (Syntax: '(var ((a,b), c), int d);')
Expression:
ITupleOperation (OperationKind.Tuple, Type: (((var a, var b), var c), System.Int32 d), IsInvalid) (Syntax: '(var ((a,b), c), int d)')
NaturalType: (((var a, var b), var c), System.Int32 d)
Elements(2):
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: ((var a, var b), var c), IsInvalid) (Syntax: 'var ((a,b), c)')
ITupleOperation (OperationKind.Tuple, Type: ((var a, var b), var c), IsInvalid) (Syntax: '((a,b), c)')
NaturalType: null
Elements(2):
ITupleOperation (OperationKind.Tuple, Type: (var a, var b), IsInvalid) (Syntax: '(a,b)')
NaturalType: null
Elements(2):
ILocalReferenceOperation: a (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'a')
ILocalReferenceOperation: b (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'b')
ILocalReferenceOperation: c (IsDeclaration: True) (OperationKind.LocalReference, Type: var, IsInvalid) (Syntax: 'c')
IDeclarationExpressionOperation (OperationKind.DeclarationExpression, Type: System.Int32, IsInvalid) (Syntax: 'int d')
ILocalReferenceOperation: d (IsDeclaration: True) (OperationKind.LocalReference, Type: System.Int32, IsInvalid) (Syntax: 'd')
";
VerifyOperationTreeAndDiagnosticsForTest<ExpressionStatementSyntax>(source, expectedTree, expectedDiagnostics);
}
}
}
|