public IType Eval(ITypeEnv typeEnv)
{
Unique unique = new Unique();
typeEnv = typeEnv.MakeChild();
typeEnv.Add(mTypeVarName, new TVar(unique));
IType type = mTypeExpr.Eval(typeEnv);
return new TAbs(unique, type);
}
public IType Check(
ITypeCtxt typeCtxt,
ITypeEnv typeEnv,
IValueCtxt valueCtxt
)
{
Unique unique = new Unique();
typeCtxt = typeCtxt.MakeChild();
typeEnv = typeEnv.MakeChild();
typeCtxt.Add(mTypeVarName, mKind);
typeEnv.Add(mTypeVarName, new TVar(unique));
IType type = mValueExpr.Check(typeCtxt, typeEnv, valueCtxt);
return MakePolymorphicType(unique, mKind, type);
}