src/share/vm/ci/ciMethodType.hpp

/*
 * Copyright (c) 2012, 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
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#ifndef SHARE_VM_CI_CIMETHODTYPE_HPP
#define SHARE_VM_CI_CIMETHODTYPE_HPP

#include "ci/ciInstance.hpp"
#include "ci/ciUtilities.hpp"
#include "classfile/javaClasses.hpp"

// ciMethodType
//
// The class represents a java.lang.invoke.MethodType object.
class ciMethodType : public ciInstance {
private:
  ciType* 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);
    }
  }

public:
  ciMethodType(instanceHandle h_i) : ciInstance(h_i) {}

  // What kind of ciObject is this?
  bool is_method_type() const { return true; }

  ciType* rtype() const {
    GUARDED_VM_ENTRY(
      oop rtype = java_lang_invoke_MethodType::rtype(get_oop());
      return class_to_citype(rtype);
    )
  }

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

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

  ciType* ptype_at(int index) const {
    GUARDED_VM_ENTRY(
      oop ptype = java_lang_invoke_MethodType::ptype(get_oop(), index);
      return class_to_citype(ptype);
    )
  }
};

#endif // SHARE_VM_CI_CIMETHODTYPE_HPP