Strongtalk VM: evaluator.hpp Source File

00001 /* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.14 $ */
00002 /* Copyright (c) 2006, Sun Microsystems, Inc.
00003 All rights reserved.
00004 
00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
00006 following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
00009     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
00010           disclaimer in the documentation and/or other materials provided with the distribution.
00011     * Neither the name of Sun Microsystems nor the names of its contributors may be used to endorse or promote products derived 
00012           from this software without specific prior written permission.
00013 
00014 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT 
00015 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
00016 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
00017 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
00018 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
00019 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
00020 
00021 
00022 */
00023 
00024 // The evaluator provides a read-eval-loop for simple vm debugging
00025 // See print_help() for documentation.
00026 
00027 class TokenStream;
00028 
00029 class evaluator : AllStatic {
00030  protected:
00031   static bool get_line(char* line);
00032   static bool process_line();
00033   static void eval_message(TokenStream* st);
00034   static bool get_oop(TokenStream* st,oop* addr);
00035   static void print_mini_help();
00036   static void print_help();
00037   static void top_command(TokenStream* st);
00038   static void show_command(TokenStream* st);
00039   static void change_debug_flag(TokenStream* st, bool value);
00040   static void print_status();
00041  public:
00042   static void read_eval_loop();
00043   static void single_step(int* fr);
00044 };