// if x more specific than y then return -1
public int Compare(LambdaSignature x, LambdaSignature y)
{
if (x.RequiredArgsCount > y.RequiredArgsCount)
{
// more arguments is more specific
return(-1);
}
if (x.RequiredArgsCount < y.RequiredArgsCount)
{
// more arguments is more specific
return(1);
}
for (var i = 0; i < x.RequiredArgsCount; ++i)
{
var type1 = x.Parameters[i].Specializer;
var type2 = y.Parameters[i].Specializer;
var result = Runtime.CompareClass(type1, type2);
switch (result)
{
case CompareClassResult.NotComparable:
{
// implies both are not null
// anything will do but the value must be reproducible.
return(Runtime.Compare(type1.GetHashCode(), type2.GetHashCode()));
}
case CompareClassResult.Less:
{
// more specific must be on top
return(-1);
}
case CompareClassResult.Greater:
{
// less specific must be on bottom
return(1);
}
//case CompareClassResult.Equal:
default:
{
// next slot
break;
}
}
}
return(0);
}
object IApply.Apply(object[] args)
{
return(Runtime.Compare(args[0], args[1]));
}
