protected override bool Convert(MethodBase method, object[] args, out object[] convertedArgs)
{
convertedArgs = new object[method.DeclareParamCount()];
//Note:if there is args omit(opt/var), use default value or empty array to adjust the number of args.
if (args.Length >= convertedArgs.Length)
{
if (method.IsVarArgs())//Note:Pass in args is more than declare, try convert and build vararg array.
{
if (!TryConvertArgumentArray(method, args, convertedArgs, convertedArgs.Length - 1))
return false;
return TryBuildVarArgArray(method, args, convertedArgs);
}
else if (args.Length == convertedArgs.Length)//Note:if equal, it might be exact match.
return TryConvertArgumentArray(method, args, convertedArgs, args.Length);
}
else//Note:Check with optarg/vararg, both is possible
{
if (method.IsOptArg(args.Length) || method.IsVarArgs())
{
if (!TryConvertArgumentArray(method, args, convertedArgs, args.Length))
return false;
if (method.IsVarArgs())
{
RetrieveOptArgDefault(method, convertedArgs, args.Length, method.DeclareParamCount() - args.Length - 1);
return TryBuildVarArgArray(method, args, convertedArgs);
}
else
{
RetrieveOptArgDefault(method, convertedArgs, args.Length, method.DeclareParamCount() - args.Length);
return true;
}
}
}
return false;
}
private void FindBetterCandidate(object[] args, MethodBase mi, object[] converted_args)
{
if (_candidate.IsVarArgs() && mi.IsVarArgs())
{
//Note: if both candidate and current method isVarArgs, choose the one has more parameter
if (_candidate.DeclareParamCount() < mi.DeclareParamCount())
SaveCurrentFound(mi, converted_args);
}
else if (!_candidate.IsVarArgs() && !mi.IsVarArgs())
{
//Note:if both not VarArgs, choose exact match one, otherwise is ambiguous call
// (in case both can fit with opt param, it's ambiguous call).
if (_candidate.DeclareParamCount() == args.Length)
{
//Note:Saved candidate is better, nothing to do.
}
else if (mi.DeclareParamCount() == args.Length)
SaveCurrentFound(mi, converted_args);
else
ThrowHelper.ThrowAmbiguousMethod(_r.BoundType, mi.Name);
}
else if (_candidate.IsVarArgs() && !mi.IsVarArgs())//Note:Prefer NonVarArgs method
SaveCurrentFound(mi, converted_args);
//Note:else if (!_candidate.IsVarArgs() && mi.IsVarArgs()) Prefer NonVarArgs method, candidate is better, do nothing
}