private ITypeSymbol GetDelegateType(TypeInferenceInfo typeInferenceInfo, Compilation compilation)
{
ITypeSymbol typeSymbol = typeInferenceInfo.InferredType;
if (typeInferenceInfo.IsParams && typeInferenceInfo.InferredType.IsArrayType())
{
typeSymbol = ((IArrayTypeSymbol)typeInferenceInfo.InferredType).ElementType;
}
return typeSymbol.GetDelegateType(compilation);
}
private IEnumerable<TypeInferenceInfo> GetTypesSimple(ExpressionSyntax expression)
{
if (expression != null)
{
var typeInfo = SemanticModel.GetTypeInfo(expression, CancellationToken);
var symbolInfo = SemanticModel.GetSymbolInfo(expression, CancellationToken);
if (symbolInfo.CandidateReason != CandidateReason.WrongArity)
{
var typeInferenceInfo = new TypeInferenceInfo(typeInfo.Type);
// If it bound to a method, try to get the Action/Func form of that method.
if (typeInferenceInfo.InferredType == null &&
symbolInfo.GetAllSymbols().Count() == 1 &&
symbolInfo.GetAllSymbols().First().Kind == SymbolKind.Method)
{
var method = symbolInfo.GetAllSymbols().First();
typeInferenceInfo = new TypeInferenceInfo(method.ConvertToType(this.Compilation));
}
if (IsUsableTypeFunc(typeInferenceInfo))
{
return SpecializedCollections.SingletonEnumerable(typeInferenceInfo);
}
}
}
return SpecializedCollections.EmptyEnumerable<TypeInferenceInfo>();
}