/*

 * Copyright (c) 1999, 2015, 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.

 *

 */

#ifndef SHARE_VM_CI_CISIGNATURE_HPP

#define SHARE_VM_CI_CISIGNATURE_HPP

#include "ci/ciClassList.hpp"

#include "ci/ciSymbol.hpp"

#include "interpreter/bytecodes.hpp"

#include "utilities/globalDefinitions.hpp"

#include "utilities/growableArray.hpp"

// ciSignature

//

// This class represents the signature of a method.

class ciSignature : public ResourceObj {

private:

  ciSymbol* _symbol;

  ciKlass*  _accessing_klass;

  GrowableArray<ciType*>* _types;

  int _size;   // number of stack slots required for arguments

  int _count;  // number of parameter types in the signature

  friend class ciMethod;

  friend class ciBytecodeStream;

  friend class ciObjectFactory;

  ciSignature(ciKlass* accessing_klass, const constantPoolHandle& cpool, ciSymbol* signature);

  ciSignature(ciKlass* accessing_klass,                           ciSymbol* signature, ciMethodType* method_type);

  void get_all_klasses();

  Symbol* get_symbol() const                     { return _symbol->get_symbol(); }

public:

  ciSymbol* as_symbol() const                    { return _symbol; }

  ciKlass*  accessing_klass() const              { return _accessing_klass; }

  ciType*   return_type() const;

  ciType*   type_at(int index) const;

  int       size() const                         { return _size; }

  int       count() const                        { return _count; }

  int       arg_size_for_bc(Bytecodes::Code bc)  { return size() + (Bytecodes::has_receiver(bc) ? 1 : 0); }

  bool equals(ciSignature* that);

  void print_signature();

  void print();

};

#endif // SHARE_VM_CI_CISIGNATURE_HPP