static GacMethod TryPickFunction(GacUDT udt, GacMethod[] methods, string methodLocalName, string methodParameters)
{
var candidates1 = methods.Where(m => m.Name == udt.Name + "::" + methodLocalName).ToArray();
var candidates2 = methods.Where(m => m.Name == methodLocalName).ToArray();
var result = TryPickFunction(candidates1.Concat(candidates2).ToArray(), methodParameters);
return result;
}
static GacMethod PickFunction(GacMethod[] funcs, string methodParameters)
{
GacMethod method = TryPickFunction(funcs, methodParameters);
if (method == null)
{
throw new ArgumentException();
}
return method;
}
// methodParameters can be
// (vl.presentation.TextPos,vl.presentation.TextPos,vl.ObjectString<System.Char>!System.Runtime.CompilerServices.IsConst*!System.Runtime.CompilerServices.IsImplicitlyDereferenced)
static GacMethod TryPickFunction(GacMethod[] funcs, string methodParameters)
{
switch (funcs.Length)
{
case 0: return null;
case 1: return funcs[0];
default:
{
var parameters =
methodParameters == ""
? new string[0]
: SplitParameters(methodParameters.Substring(1, methodParameters.Length - 2))
;
var selectableFuncs = funcs
.Where(f => f.Type.ParameterTypes.Length == parameters.Length)
.ToArray();
if (selectableFuncs.Length != 1)
{
selectableFuncs = selectableFuncs
.Where(f => f.Type.ParameterTypes.Select((t, i) => t.Name == parameters[i]).All(t => t))
.ToArray();
}
return selectableFuncs.Length == 1 ? selectableFuncs[0] : null;
}
}
}
