/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#include "precompiled.hpp"
#include "ci/ciInstance.hpp"
#include "ci/ciMethodType.hpp"
#include "ci/ciUtilities.inline.hpp"
#include "classfile/javaClasses.inline.hpp"

ciType* ciMethodType::class_to_citype(oop klass_oop) const {
  if (java_lang_Class::is_primitive(klass_oop)) {
    BasicType bt = java_lang_Class::primitive_type(klass_oop);
    return ciType::make(bt);
  } else {
    Klass* k = java_lang_Class::as_Klass(klass_oop);
    return CURRENT_ENV->get_klass(k);
  }
}

ciType* ciMethodType::rtype(bool& never_null) const {
  GUARDED_VM_ENTRY(
    oop rtype = java_lang_invoke_MethodType::rtype(get_oop());
    never_null = (java_lang_Class::value_mirror(rtype) == rtype);
    return class_to_citype(rtype);
  )
}

int ciMethodType::ptype_count() const {
  GUARDED_VM_ENTRY(return java_lang_invoke_MethodType::ptype_count(get_oop());)
}

int ciMethodType::ptype_slot_count() const {
  GUARDED_VM_ENTRY(return java_lang_invoke_MethodType::ptype_slot_count(get_oop());)
}

ciType* ciMethodType::ptype_at(int index, bool& never_null) const {
  GUARDED_VM_ENTRY(
    oop ptype = java_lang_invoke_MethodType::ptype(get_oop(), index);
    never_null = (java_lang_Class::value_mirror(ptype) == ptype);
    return class_to_citype(ptype);
  )
}