duke@435: /*
duke@435:  * Copyright 1999-2005 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // ciExceptionHandler
duke@435: //
duke@435: // This class represents an exception handler for a method.
duke@435: class ciExceptionHandler : public ResourceObj {
duke@435: private:
duke@435:   friend class ciMethod;
duke@435: 
duke@435:   // The loader to be used for resolving the exception
duke@435:   // klass.
duke@435:   ciInstanceKlass* _loading_klass;
duke@435: 
duke@435:   // Handler data.
duke@435:   int _start;
duke@435:   int _limit;
duke@435:   int _handler_bci;
duke@435:   int _catch_klass_index;
duke@435: 
duke@435:   // The exception klass that this handler catches.
duke@435:   ciInstanceKlass* _catch_klass;
duke@435: 
duke@435: public:
duke@435:   ciExceptionHandler(ciInstanceKlass* loading_klass,
duke@435:                      int start, int limit,
duke@435:                      int handler_bci, int klass_index) {
duke@435:     _loading_klass = loading_klass;
duke@435:     _start  = start;
duke@435:     _limit  = limit;
duke@435:     _handler_bci = handler_bci;
duke@435:     _catch_klass_index = klass_index;
duke@435:     _catch_klass = NULL;
duke@435:   }
duke@435: 
duke@435:   int       start()             { return _start; }
duke@435:   int       limit()             { return _limit; }
duke@435:   int       handler_bci()       { return _handler_bci; }
duke@435:   int       catch_klass_index() { return _catch_klass_index; }
duke@435: 
duke@435:   // Get the exception klass that this handler catches.
duke@435:   ciInstanceKlass* catch_klass();
duke@435: 
duke@435:   bool      is_catch_all() { return catch_klass_index() == 0; }
duke@435:   bool      is_in_range(int bci) {
duke@435:     return start() <= bci && bci < limit();
duke@435:   }
duke@435:   bool      catches(ciInstanceKlass *exc) {
duke@435:     return is_catch_all() || exc->is_subtype_of(catch_klass());
duke@435:   }
duke@435:   bool      is_rethrow() { return handler_bci() == -1; }
duke@435: 
duke@435:   void      print();
duke@435: };