/*

 * Copyright (c) 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_MEMORY_CLASSLISTPARSER_HPP

#define SHARE_VM_MEMORY_CLASSLISTPARSER_HPP

#include "utilities/exceptions.hpp"

#include "utilities/globalDefinitions.hpp"

class ClassListParser : public StackObj {

  enum {

    // Max number of bytes allowed per line in the classlist.

    // Theoretically Java class names could be 65535 bytes in length. In reality,

    // 4K bytes is more than enough.

    _max_allowed_line_len = 4096,

    _line_buf_extra       = 10, // for detecting input too long

    _line_buf_size        = _max_allowed_line_len + _line_buf_extra

  };

  const char* _classlist_file;

  FILE* _file;

  char  _line[_line_buf_size];  // The buffer that holds the current line.

public:

  ClassListParser(const char* file);

  ~ClassListParser();

  bool parse_one_line();

  const char* current_class_name() {

    return _line;

  }

};

#endif // SHARE_VM_MEMORY_CLASSLISTPARSER_HPP