public static MethodSymbol Create(MethodSymbol method)
{
Debug.Assert(method.IsExtensionMethod && method.MethodKind != MethodKind.ReducedExtension);
// The reduced form is always created from the unconstructed method symbol.
var constructedFrom = method.ConstructedFrom;
var reducedMethod = new ReducedExtensionMethodSymbol(constructedFrom);
if (constructedFrom == method)
{
return reducedMethod;
}
// If the given method is a constructed method, the same type arguments
// are applied to construct the result from the reduced form.
Debug.Assert(!method.TypeArguments.IsEmpty);
return reducedMethod.Construct(method.TypeArguments);
}
/// <summary>
/// If this is an extension method, returns a reduced extension method
/// symbol representing the method. Otherwise, returns null.
/// </summary>
public MethodSymbol ReduceExtensionMethod()
{
return((this.IsExtensionMethod && this.MethodKind != MethodKind.ReducedExtension) ? ReducedExtensionMethodSymbol.Create(this) : null);
}
public ReducedExtensionMethodParameterSymbol(ReducedExtensionMethodSymbol containingMethod, ParameterSymbol underlyingParameter) :
base(underlyingParameter)
{
Debug.Assert(underlyingParameter.Ordinal > 0);
_containingMethod = containingMethod;
}
public ReducedExtensionMethodParameterSymbol(ReducedExtensionMethodSymbol containingMethod, ParameterSymbol underlyingParameter) :
base(underlyingParameter)
{
Debug.Assert(underlyingParameter.Ordinal > 0);
this.containingMethod = containingMethod;
}