| public GetBestCandidateWithSubstitutedTypeArguments ( ) : IParameterizedMember | ||
| 리턴 | IParameterizedMember | |
public InvocationResolveResult(ResolveResult targetResult, OverloadResolution or, ITypeResolveContext context)
: base(
or.IsExtensionMethodInvocation ? null : targetResult,
or.GetBestCandidateWithSubstitutedTypeArguments(),
context)
{
this.OverloadResolutionErrors = or.BestCandidateErrors;
this.argumentToParameterMap = or.GetArgumentToParameterMap();
this.Arguments = or.GetArgumentsWithConversions();
this.IsExtensionMethodInvocation = or.IsExtensionMethodInvocation;
this.IsExpandedForm = or.BestCandidateIsExpandedForm;
this.IsLiftedOperatorInvocation = or.BestCandidate is OverloadResolution.ILiftedOperator;
}
public InvocationResolveResult(ResolveResult targetResult, OverloadResolution or, ITypeResolveContext context)
: base(
or.IsExtensionMethodInvocation ? null : targetResult,
or.GetBestCandidateWithSubstitutedTypeArguments(),
context)
{
this.OverloadResolutionErrors = or.BestCandidateErrors;
this.argumentToParameterMap = or.GetArgumentToParameterMap();
this.Arguments = or.GetArgumentsWithConversions();
this.IsExtensionMethodInvocation = or.IsExtensionMethodInvocation;
this.IsExpandedForm = or.BestCandidateIsExpandedForm;
this.IsLiftedOperatorInvocation = or.BestCandidate is OverloadResolution.ILiftedOperator;
}
public OverloadResolution PerformOverloadResolution(ITypeResolveContext context, ResolveResult[] arguments, string[] argumentNames = null, bool allowExtensionMethods = true, bool allowExpandingParams = true, Conversions conversions = null)
{
Log.WriteLine("Performing overload resolution for " + this);
Log.WriteCollection(" Arguments: ", arguments);
var typeArgumentArray = this.TypeArguments.ToArray();
OverloadResolution or = new OverloadResolution(context, arguments, argumentNames, typeArgumentArray, conversions);
or.AllowExpandingParams = allowExpandingParams;
or.AddMethodLists(methodLists);
if (allowExtensionMethods && !or.FoundApplicableCandidate)
{
// No applicable match found, so let's try extension methods.
var extensionMethods = this.GetExtensionMethods();
if (extensionMethods.Count > 0)
{
Log.WriteLine("No candidate is applicable, trying {0} extension methods groups...", extensionMethods.Count);
ResolveResult[] extArguments = new ResolveResult[arguments.Length + 1];
extArguments[0] = new ResolveResult(this.TargetType);
arguments.CopyTo(extArguments, 1);
string[] extArgumentNames = null;
if (argumentNames != null)
{
extArgumentNames = new string[argumentNames.Length + 1];
argumentNames.CopyTo(extArgumentNames, 1);
}
var extOr = new OverloadResolution(context, extArguments, extArgumentNames, typeArgumentArray, conversions);
extOr.AllowExpandingParams = allowExpandingParams;
extOr.IsExtensionMethodInvocation = true;
foreach (var g in extensionMethods)
{
foreach (var method in g)
{
Log.Indent();
OverloadResolutionErrors errors = extOr.AddCandidate(method);
Log.Unindent();
or.LogCandidateAddingResult(" Extension", method, errors);
}
if (extOr.FoundApplicableCandidate)
{
break;
}
}
// For the lack of a better comparison function (the one within OverloadResolution
// cannot be used as it depends on the argument set):
if (extOr.FoundApplicableCandidate || or.BestCandidate == null)
{
// Consider an extension method result better than the normal result only
// if it's applicable; or if there is no normal result.
or = extOr;
}
}
}
Log.WriteLine("Overload resolution finished, best candidate is {0}.", or.GetBestCandidateWithSubstitutedTypeArguments());
return(or);
}