protected MethodSymbol VisitMethodSymbol(MethodSymbol method)
{
if ((object)method == null)
{
return(null);
}
if (!method.ContainingType.IsAnonymousType)
{
// Method of a regular type
return(((MethodSymbol)method.OriginalDefinition)
.AsMember((NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType))
.ConstructIfGeneric(TypeMap.SubstituteTypes(method.TypeArguments)));
}
// Method of an anonymous type
var newType = (NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType);
if (ReferenceEquals(newType, method.ContainingType))
{
// Anonymous type symbol was not rewritten
return(method);
}
// get a new method by name
foreach (var member in newType.GetMembers(method.Name))
{
if (member.Kind == SymbolKind.Method)
{
return((MethodSymbol)member);
}
}
throw ExceptionUtilities.Unreachable;
}
private BoundNode RewriteMethodGroupConversion(BoundConversion conversion)
{
// in a method group conversion, we may need to rewrite the selected method
BoundMethodGroup operand = (BoundMethodGroup)conversion.Operand;
BoundExpression originalReceiverOpt = operand.ReceiverOpt;
BoundExpression receiverOpt;
if (originalReceiverOpt == null)
{
receiverOpt = null;
}
else if (!conversion.IsExtensionMethod && conversion.SymbolOpt.IsStatic)
{
receiverOpt = new BoundTypeExpression(originalReceiverOpt.Syntax, null, VisitType(originalReceiverOpt.Type));
}
else
{
receiverOpt = (BoundExpression)Visit(originalReceiverOpt);
}
TypeSymbol type = this.VisitType(conversion.Type);
MethodSymbol method = conversion.SymbolOpt;
// if the original receiver was a base access and is was rewritten,
// change the method to point to the wrapper method
if (BaseReferenceInReceiverWasRewritten(originalReceiverOpt, receiverOpt) && method.IsMetadataVirtual())
{
method = GetMethodWrapperForBaseNonVirtualCall(method, conversion.Syntax);
}
method = VisitMethodSymbol(method);
operand = operand.Update(
TypeMap.SubstituteTypes(operand.TypeArgumentsOpt),
method.Name,
operand.Methods,
operand.LookupSymbolOpt,
operand.LookupError,
operand.Flags,
receiverOpt,
operand.ResultKind);
return(conversion.Update(
operand,
conversion.ConversionKind,
resultKind: conversion.ResultKind,
isBaseConversion: conversion.IsBaseConversion,
symbolOpt: method,
@checked: conversion.Checked,
explicitCastInCode: conversion.ExplicitCastInCode,
isExtensionMethod: conversion.IsExtensionMethod,
isArrayIndex: conversion.IsArrayIndex,
constantValueOpt: conversion.ConstantValueOpt,
type: type));
}
private ReducedExtensionMethodSymbol(MethodSymbol reducedFrom)
{
Debug.Assert((object)reducedFrom != null);
Debug.Assert(reducedFrom.IsExtensionMethod);
Debug.Assert((object)reducedFrom.ReducedFrom == null);
Debug.Assert(reducedFrom.ConstructedFrom == reducedFrom);
Debug.Assert(reducedFrom.ParameterCount > 0);
_reducedFrom = reducedFrom;
_typeMap = TypeMap.Empty.WithAlphaRename(reducedFrom, this, out _typeParameters);
_typeArguments = _typeMap.SubstituteTypes(reducedFrom.TypeArgumentsWithAnnotations);
}
protected MethodSymbol?VisitMethodSymbol(MethodSymbol?method)
{
if (method is null)
{
return(null);
}
if (method.ContainingType is null)
{
Debug.Assert(method is SynthesizedGlobalMethodSymbol);
return(method);
}
else if (method.ContainingType.IsAnonymousType)
{
// Method of an anonymous type
var newType = (NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType).AsTypeSymbolOnly();
if (ReferenceEquals(newType, method.ContainingType))
{
// Anonymous type symbol was not rewritten
return(method);
}
// get a new method by name
foreach (var member in newType.GetMembers(method.Name))
{
if (member.Kind == SymbolKind.Method)
{
return((MethodSymbol)member);
}
}
throw ExceptionUtilities.Unreachable;
}
else
{
// Method of a regular type
return(((MethodSymbol)method.OriginalDefinition)
.AsMember((NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType).AsTypeSymbolOnly())
.ConstructIfGeneric(TypeMap.SubstituteTypes(method.TypeArgumentsWithAnnotations)));
}
}
protected MethodSymbol VisitMethodSymbol(MethodSymbol method)
{
if ((object)method == null)
{
return(null);
}
if (method.IsTupleMethod)
{
// Method of a tuple type
var oldType = method.ContainingType;
var constructedFrom = method.ConstructedFrom;
Debug.Assert(oldType.IsTupleType);
var newType = (NamedTypeSymbol)TypeMap.SubstituteType(oldType).AsTypeSymbolOnly();
if ((object)newType == oldType)
{
// tuple type symbol was not rewritten
return(constructedFrom.ConstructIfGeneric(TypeMap.SubstituteTypes(method.TypeArgumentsWithAnnotations)));
}
Debug.Assert(newType.IsTupleType);
Debug.Assert(oldType.TupleElementTypesWithAnnotations.Length == newType.TupleElementTypesWithAnnotations.Length);
// get a new method by position
var oldMembers = oldType.GetMembers();
var newMembers = newType.GetMembers();
Debug.Assert(oldMembers.Length == newMembers.Length);
for (int i = 0; i < oldMembers.Length; i++)
{
if ((object)constructedFrom == oldMembers[i])
{
return(((MethodSymbol)newMembers[i]).ConstructIfGeneric(TypeMap.SubstituteTypes(method.TypeArgumentsWithAnnotations)));
}
}
throw ExceptionUtilities.Unreachable;
}
else if (method.ContainingType.IsAnonymousType)
{
// Method of an anonymous type
var newType = (NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType).AsTypeSymbolOnly();
if (ReferenceEquals(newType, method.ContainingType))
{
// Anonymous type symbol was not rewritten
return(method);
}
// get a new method by name
foreach (var member in newType.GetMembers(method.Name))
{
if (member.Kind == SymbolKind.Method)
{
return((MethodSymbol)member);
}
}
throw ExceptionUtilities.Unreachable;
}
else
{
// Method of a regular type
return(((MethodSymbol)method.OriginalDefinition)
.AsMember((NamedTypeSymbol)TypeMap.SubstituteType(method.ContainingType).AsTypeSymbolOnly())
.ConstructIfGeneric(TypeMap.SubstituteTypes(method.TypeArgumentsWithAnnotations)));
}
}
internal override ImmutableArray <TypeSymbol> GetConstraintTypes(ConsList <TypeParameterSymbol> inProgress)
{
return(_map.SubstituteTypes(_substitutedFrom.GetConstraintTypes(inProgress)).WhereAsArray(s_isNotObjectFunc).Distinct());
}
private ReducedExtensionMethodSymbol(MethodSymbol reducedFrom)
{
Debug.Assert((object)reducedFrom != null);
Debug.Assert(reducedFrom.IsExtensionMethod);
Debug.Assert((object)reducedFrom.ReducedFrom == null);
Debug.Assert(reducedFrom.ConstructedFrom == reducedFrom);
Debug.Assert(reducedFrom.ParameterCount > 0);
_reducedFrom = reducedFrom;
_typeMap = TypeMap.Empty.WithAlphaRename(reducedFrom, this, out _typeParameters);
_typeArguments = _typeMap.SubstituteTypes(reducedFrom.TypeArguments);
}
