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Fix GetSymbolInfo on ValueTuple declaration #43467

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merged 7 commits into from
Apr 22, 2020
Merged

Fix GetSymbolInfo on ValueTuple declaration #43467

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c241af8
Fix GetSymbolInfo on ValueTuple declaration
jcouv Apr 18, 2020
61ebdde
Add overload resolution of constructor with new() and use-site diagno…
jcouv Apr 20, 2020
2d4e9e2
Some source fields are not SourceMemberFieldSymbols
jcouv Apr 20, 2020
3107fa3
Add test for faulty type test
jcouv Apr 21, 2020
cb36a3c
Add a case to target-typed new() test
jcouv Apr 21, 2020
b5fdc2e
Merge remote-tracking branch 'dotnet/master' into tuple-bug
jcouv Apr 21, 2020
fc40b64
Couple more target-typed new use-site error tests
jcouv Apr 21, 2020
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8 changes: 4 additions & 4 deletions src/Compilers/CSharp/Portable/Compilation/SyntaxTreeSemanticModel.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1060,7 +1060,7 @@ private MemberSemanticModel CreateMemberModel(CSharpSyntaxNode node)
case SyntaxKind.VariableDeclarator:
{
var variableDecl = (VariableDeclaratorSyntax)node.Parent;
SourceMemberFieldSymbol fieldSymbol = GetDeclaredFieldSymbol(variableDecl);
FieldSymbol fieldSymbol = GetDeclaredFieldSymbol(variableDecl);

return InitializerSemanticModel.Create(
this,
Expand Down Expand Up @@ -1194,7 +1194,7 @@ private AttributeSemanticModel CreateModelForAttribute(Binder enclosingBinder, A
containingModel?.GetRemappedSymbols());
}

private SourceMemberFieldSymbol GetDeclaredFieldSymbol(VariableDeclaratorSyntax variableDecl)
private FieldSymbol GetDeclaredFieldSymbol(VariableDeclaratorSyntax variableDecl)
{
var declaredSymbol = GetDeclaredSymbol(variableDecl);

Expand All @@ -1203,10 +1203,10 @@ private SourceMemberFieldSymbol GetDeclaredFieldSymbol(VariableDeclaratorSyntax
switch (variableDecl.Parent.Parent.Kind())
{
case SyntaxKind.FieldDeclaration:
return declaredSymbol.GetSymbol<SourceMemberFieldSymbol>();
return declaredSymbol.GetSymbol<FieldSymbol>();

case SyntaxKind.EventFieldDeclaration:
return (SourceMemberFieldSymbol)(declaredSymbol.GetSymbol<EventSymbol>()).AssociatedField;
return (declaredSymbol.GetSymbol<EventSymbol>()).AssociatedField;
}
}

Expand Down
24 changes: 24 additions & 0 deletions src/Compilers/CSharp/Test/Emit/CodeGen/CodeGenTupleTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -26756,5 +26756,29 @@ private void Method(IInterface inter, Func<(Type, Type), string> keySelector)
var comp2 = CreateCompilation(source1, references: new[] { comp1.EmitToImageReference() }, options: TestOptions.DebugDll);
CompileAndVerify(comp2);
}

[Fact]
[WorkItem(1090920, "https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems/edit/1090920")]
public void GetSymbolInfoOnInitializerOfValueTupleField()
{

var source = @"
namespace System
{
public struct ValueTuple<T1>
{
public T1 Item1 = default;
public ValueTuple(T1 item1) { }
}
}
";

var comp = CreateCompilation(new[] { source }, options: TestOptions.DebugDll);

var tree = comp.SyntaxTrees.Single();
var model = comp.GetSemanticModel(tree, ignoreAccessibility: false);
var literal = tree.GetRoot().DescendantNodes().OfType<LiteralExpressionSyntax>().Single();
Assert.True(model.GetSymbolInfo(literal).IsEmpty);
}
}
}