// $Id$ -*- C++ -*- // Undo Buffer Entry // Copyright (C) 1998 Technische Universitaet Braunschweig, Germany. // Written by Andreas Zeller <zeller@gnu.org>. // // This file is part of DDD. // // DDD is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public // License as published by the Free Software Foundation; either // version 3 of the License, or (at your option) any later version. // // DDD 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 for more details. // // You should have received a copy of the GNU General Public // License along with DDD -- see the file COPYING. // If not, see <http://www.gnu.org/licenses/>. // // DDD is the data display debugger. // For details, see the DDD World-Wide-Web page, // `http://www.gnu.org/software/ddd/', // or send a mail to the DDD developers <ddd@gnu.org>. #ifndef _DDD_UndoBufferEntry_h #define _DDD_UndoBufferEntry_h #include "StringSA.h" #include "VarArray.h" #include "bool.h" // Special value keys #define UB_POS "pos" // Current source position #define UB_ADDRESS "address" // Current program counter #define UB_EXEC_POS "exec_pos" // Current execution position #define UB_EXEC_ADDRESS "exec_address" // Current execution program counter #define UB_WHERE "where" // Current backtrace #define UB_FRAME "frame" // Current frame #define UB_REGISTERS "registers" // Current register values #define UB_THREADS "threads" // Current threads #define UB_COMMAND "command" // Command restoring state (undoing) #define UB_EXEC_COMMAND "exec_command" // Same, but requires current state #define UB_SOURCE "source" // Command causing the undo #define UB_STATE "state" // Marker for execution state // Prefix for current displays; followed by display name #define UB_DISPLAY_PREFIX "display " // Display value #define UB_DISPLAY_ADDRESS_PREFIX "&display " // Display address class UndoBufferEntry: public StringStringAssoc { public: UndoBufferEntry() : StringStringAssoc() {} UndoBufferEntry(const UndoBufferEntry& entry) : StringStringAssoc(entry) {} UndoBufferEntry& operator = (const UndoBufferEntry& entry) { if ( &entry != this ) { StringStringAssoc::operator = (entry); } return *this; } bool operator == (const UndoBufferEntry& entry) const; bool operator != (const UndoBufferEntry& entry) const { return !operator == (entry); } bool has_state() const { return has(UB_STATE); } bool has_pos() const { return has(UB_POS) || has(UB_ADDRESS); } bool has_command() const { return has(UB_COMMAND) || has(UB_EXEC_COMMAND); } // Allocated memory int allocation() const; }; typedef VarArray<UndoBufferEntry> UndoBufferArray; #endif // _DDD_UndoBufferEntry_h // DON'T ADD ANYTHING BEHIND THIS #endif