Conversion MethodGroupConversion(ResolveResult resolveResult, IType toType)
{
// C# 4.0 spec §6.6 Method group conversions
MethodGroupResolveResult rr = resolveResult as MethodGroupResolveResult;
if (rr == null)
{
return(Conversion.None);
}
IMethod m = toType.GetDelegateInvokeMethod();
if (m == null)
{
return(Conversion.None);
}
ResolveResult[] args = new ResolveResult[m.Parameters.Count];
for (int i = 0; i < args.Length; i++)
{
IParameter param = m.Parameters[i];
IType parameterType = param.Type;
if ((param.IsRef || param.IsOut) && parameterType.Kind == TypeKind.ByReference)
{
parameterType = ((ByReferenceType)parameterType).ElementType;
args[i] = new ByReferenceResolveResult(parameterType, param.IsOut);
}
else
{
args[i] = new ResolveResult(parameterType);
}
}
var or = rr.PerformOverloadResolution(compilation, args, allowExpandingParams: false, conversions: this);
if (or.FoundApplicableCandidate)
{
IMethod method = (IMethod)or.GetBestCandidateWithSubstitutedTypeArguments();
var thisRR = rr.TargetResult as ThisResolveResult;
bool isVirtual = method.IsOverridable && !(thisRR != null && thisRR.CausesNonVirtualInvocation);
return(Conversion.MethodGroupConversion(method, isVirtual));
}
else
{
return(Conversion.None);
}
}
Conversion MethodGroupConversion(ResolveResult resolveResult, IType toType)
{
// C# 4.0 spec §6.6 Method group conversions
MethodGroupResolveResult rr = resolveResult as MethodGroupResolveResult;
if (rr == null)
{
return(Conversion.None);
}
IMethod m = toType.GetDelegateInvokeMethod();
if (m == null)
{
return(Conversion.None);
}
ResolveResult[] args = new ResolveResult[m.Parameters.Count];
for (int i = 0; i < args.Length; i++)
{
IParameter param = m.Parameters[i];
IType parameterType = param.Type.Resolve(context);
if ((param.IsRef || param.IsOut) && parameterType.Kind == TypeKind.ByReference)
{
parameterType = ((ByReferenceType)parameterType).ElementType;
args[i] = new ByReferenceResolveResult(parameterType, param.IsOut);
}
else
{
args[i] = new ResolveResult(parameterType);
}
}
var or = rr.PerformOverloadResolution(context, args, allowExpandingParams: false);
if (or.FoundApplicableCandidate)
{
return(Conversion.MethodGroupConversion((IMethod)or.BestCandidate));
}
else
{
return(Conversion.None);
}
}