public CatTypeKind Rename(CatTypeKind t)
{
if (t == null)
{
throw new Exception("Invalid null parameter to rename function");
}
if (t is CatFxnType)
{
return(Rename(t as CatFxnType));
}
else if (t is CatTypeVar)
{
string sName = t.ToString();
if (mNames.ContainsKey(sName))
{
CatTypeKind ret = mNames[sName] as CatTypeKind;
if (ret == null)
{
throw new Exception(sName + " is not a type kind");
}
return(ret);
}
CatTypeVar var = GenerateNewVar(sName) as CatTypeVar;
mNames.Add(sName, var);
return(var);
}
else
{
return(t);
}
}
public static CatFxnType RenameFreeVars(CatFxnType left, CatFxnType right, CatFxnType ft)
{
CatTypeVarList vars = ft.GetAllVars();
foreach (string s in vars.Keys)
{
CatKind k = vars[s];
if (IsFreeVar(k, left, right, ft))
{
if (k is CatTypeVar)
{
vars[s] = CatTypeVar.CreateUnique();
}
else
{
vars[s] = CatStackVar.CreateUnique();
}
}
}
return(RenameVars(ft, vars));
}