/*

 * Copyright 1999-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

// ciExceptionHandler

//

// This class represents an exception handler for a method.

class ciExceptionHandler : public ResourceObj {

private:

  friend class ciMethod;

  // The loader to be used for resolving the exception

  // klass.

  ciInstanceKlass* _loading_klass;

  // Handler data.

  int _start;

  int _limit;

  int _handler_bci;

  int _catch_klass_index;

  // The exception klass that this handler catches.

  ciInstanceKlass* _catch_klass;

public:

  ciExceptionHandler(ciInstanceKlass* loading_klass,

                     int start, int limit,

                     int handler_bci, int klass_index) {

    _loading_klass = loading_klass;

    _start  = start;

    _limit  = limit;

    _handler_bci = handler_bci;

    _catch_klass_index = klass_index;

    _catch_klass = NULL;

  }

  int       start()             { return _start; }

  int       limit()             { return _limit; }

  int       handler_bci()       { return _handler_bci; }

  int       catch_klass_index() { return _catch_klass_index; }

  // Get the exception klass that this handler catches.

  ciInstanceKlass* catch_klass();

  bool      is_catch_all() { return catch_klass_index() == 0; }

  bool      is_in_range(int bci) {

    return start() <= bci && bci < limit();

  }

  bool      catches(ciInstanceKlass *exc) {

    return is_catch_all() || exc->is_subtype_of(catch_klass());

  }

  bool      is_rethrow() { return handler_bci() == -1; }

  void      print();

};