static public ParamsPriority GetParamsPriority(Type t1, Type t2)
{
ParamsPriority paramsPriority;
if ((paramsPriority = IsComplete(t1, t2)) != null)
{
return(paramsPriority);
}
var implicitCastPriority = IsImplicitCast(t1, t2);
if (implicitCastPriority != 0)
{
paramsPriority = new ParamsPriority();
paramsPriority.implicitCastPriority = implicitCastPriority;
paramsPriority.matchkind = ParamsPriority.MatchKind.ImplicitCastMatch;
return(paramsPriority);
}
var upCastNest = IsUpCast(t1, t2);
if (upCastNest != 0)
{
paramsPriority = new ParamsPriority();
paramsPriority.upCastNest = upCastNest;
paramsPriority.matchkind = ParamsPriority.MatchKind.UpCastMatch;
return(paramsPriority);
}
var concreteness = IsGeneric(t1, t2);
if (concreteness != 0)
{
paramsPriority = new ParamsPriority();
paramsPriority.matchkind = ParamsPriority.MatchKind.GenericTypeMatch;
paramsPriority.concreteness = concreteness;
return(paramsPriority);
}
var genericUpCastInfo = GetGenericUpCastInfo(t1, t2);
if (genericUpCastInfo != null)
{
paramsPriority = new ParamsPriority();
paramsPriority.upCastNest =
genericUpCastInfo.Value.upCastNest;
paramsPriority.matchkind =
ParamsPriority.MatchKind.GenericTypeUpCastMatch;
return(paramsPriority);
}
if (t2 == typeof(object))
{
paramsPriority = new ParamsPriority();
paramsPriority.matchkind =
ParamsPriority.MatchKind.ObjectMatch;
return(paramsPriority);
}
return(null);
}
//型が等しかったらtrue
static public ParamsPriority IsComplete(Type t1, Type t2)
{
if (t1 == t2)
{
var paramsPriority = new ParamsPriority();
paramsPriority.matchkind = ParamsPriority.MatchKind.TypeMatch;
return(paramsPriority);
}
return(null);
}
