private void TestUnaryIntrinsicSymbol(
UnaryOperatorKind op,
TypeSymbol type,
CSharpCompilation compilation,
SemanticModel semanticModel,
ExpressionSyntax node1,
ExpressionSyntax node2,
ExpressionSyntax node3,
ExpressionSyntax node4
)
{
SymbolInfo info1 = semanticModel.GetSymbolInfo(node1);
Assert.Equal(type.IsDynamic() ? CandidateReason.LateBound : CandidateReason.None, info1.CandidateReason);
Assert.Equal(0, info1.CandidateSymbols.Length);
var symbol1 = (MethodSymbol)info1.Symbol;
var symbol2 = semanticModel.GetSymbolInfo(node2).Symbol;
var symbol3 = (MethodSymbol)semanticModel.GetSymbolInfo(node3).Symbol;
var symbol4 = semanticModel.GetSymbolInfo(node4).Symbol;
Assert.Equal(symbol1, symbol3);
if ((object)symbol1 != null)
{
Assert.NotSame(symbol1, symbol3);
Assert.Equal(symbol1.GetHashCode(), symbol3.GetHashCode());
Assert.Equal(symbol1.Parameters[0], symbol3.Parameters[0]);
Assert.Equal(symbol1.Parameters[0].GetHashCode(), symbol3.Parameters[0].GetHashCode());
}
Assert.Equal(symbol2, symbol4);
TypeSymbol underlying = type;
if (op == UnaryOperatorKind.BitwiseComplement ||
op == UnaryOperatorKind.PrefixDecrement || op == UnaryOperatorKind.PrefixIncrement ||
op == UnaryOperatorKind.PostfixDecrement || op == UnaryOperatorKind.PostfixIncrement)
{
underlying = type.EnumUnderlyingType();
}
UnaryOperatorKind result = OverloadResolution.UnopEasyOut.OpKind(op, underlying);
UnaryOperatorSignature signature;
if (result == UnaryOperatorKind.Error)
{
if (type.IsDynamic())
{
signature = new UnaryOperatorSignature(op | UnaryOperatorKind.Dynamic, type, type);
}
else if (type.IsPointerType() &&
(op == UnaryOperatorKind.PrefixDecrement || op == UnaryOperatorKind.PrefixIncrement ||
op == UnaryOperatorKind.PostfixDecrement || op == UnaryOperatorKind.PostfixIncrement))
{
signature = new UnaryOperatorSignature(op | UnaryOperatorKind.Pointer, type, type);
}
else
{
Assert.Null(symbol1);
Assert.Null(symbol2);
Assert.Null(symbol3);
Assert.Null(symbol4);
return;
}
}
else
{
signature = compilation.builtInOperators.GetSignature(result);
if ((object)underlying != (object)type)
{
Assert.Equal(underlying, signature.OperandType);
Assert.Equal(underlying, signature.ReturnType);
signature = new UnaryOperatorSignature(signature.Kind, type, type);
}
}
Assert.NotNull(symbol1);
string containerName = signature.OperandType.ToTestDisplayString();
string returnName = signature.ReturnType.ToTestDisplayString();
if (op == UnaryOperatorKind.LogicalNegation && type.IsEnumType())
{
containerName = type.ToTestDisplayString();
returnName = containerName;
}
Assert.Equal(String.Format("{2} {0}.{1}({0} value)",
containerName,
OperatorFacts.UnaryOperatorNameFromOperatorKind(op),
returnName),
symbol1.ToTestDisplayString());
Assert.Equal(MethodKind.BuiltinOperator, symbol1.MethodKind);
Assert.True(symbol1.IsImplicitlyDeclared);
bool expectChecked = false;
switch (op)
{
case UnaryOperatorKind.UnaryMinus:
expectChecked = (type.IsDynamic() || symbol1.ContainingType.EnumUnderlyingType().SpecialType.IsIntegralType());
break;
case UnaryOperatorKind.PrefixDecrement:
case UnaryOperatorKind.PrefixIncrement:
case UnaryOperatorKind.PostfixDecrement:
case UnaryOperatorKind.PostfixIncrement:
expectChecked = (type.IsDynamic() || type.IsPointerType() ||
symbol1.ContainingType.EnumUnderlyingType().SpecialType.IsIntegralType() ||
symbol1.ContainingType.SpecialType == SpecialType.System_Char);
break;
default:
expectChecked = type.IsDynamic();
break;
}
Assert.Equal(expectChecked, symbol1.IsCheckedBuiltin);
Assert.False(symbol1.IsGenericMethod);
Assert.False(symbol1.IsExtensionMethod);
Assert.False(symbol1.IsExtern);
Assert.False(symbol1.CanBeReferencedByName);
Assert.Null(symbol1.DeclaringCompilation);
Assert.Equal(symbol1.Name, symbol1.MetadataName);
Assert.Same(symbol1.ContainingSymbol, symbol1.Parameters[0].Type);
Assert.Equal(0, symbol1.Locations.Length);
Assert.Null(symbol1.GetDocumentationCommentId());
Assert.Equal("", symbol1.GetDocumentationCommentXml());
Assert.True(symbol1.HasSpecialName);
Assert.True(symbol1.IsStatic);
Assert.Equal(Accessibility.Public, symbol1.DeclaredAccessibility);
Assert.False(symbol1.HidesBaseMethodsByName);
Assert.False(symbol1.IsOverride);
Assert.False(symbol1.IsVirtual);
Assert.False(symbol1.IsAbstract);
Assert.False(symbol1.IsSealed);
Assert.Equal(1, symbol1.ParameterCount);
Assert.Equal(0, symbol1.Parameters[0].Ordinal);
var otherSymbol = (MethodSymbol)semanticModel.GetSymbolInfo(node1).Symbol;
Assert.Equal(symbol1, otherSymbol);
if (type.IsValueType && !type.IsPointerType())
{
Assert.Equal(symbol1, symbol2);
return;
}
Assert.Null(symbol2);
}