SymTab.h

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/*
 * Copyright (C) 2005, Mike Van Emmerik
 *
 * See the file "LICENSE.TERMS" for information on usage and
 * redistribution of this file, and for a DISCLAIMER OF ALL
 * WARRANTIES.
 *
 */

/*==============================================================================
 * FILE:        SymTab.h
 * OVERVIEW:    This file contains the definition of the class SymTab, a simple class to implement a symbol table
 *              than can be looked up by address or my name.
 *              NOTE: Can't readily use operator[] overloaded for address and string parameters. The main problem is
 *              that when you do symtab[0x100] = "main", the string map doesn't see the string.
 *              If you have one of the maps be a pointer to the other string and use a special comparison operator, then
 *              if the strings are ever changed, then the map's internal rb-tree becomes invalid.
 *============================================================================*/

/*
 * $Revision: 1.5 $
 *
 * 12 Jul 05 - Mike: New implementation with two maps
*/

#ifndef __SYMTAB_H__
#define __SYMTAB_H__

#include "types.h"
#include <map>
#include <string>

class SymTab {
        // The map indexed by address.
        std::map<ADDRESS, std::string> amap;
        // The map indexed by string. Note that the strings are stored twice.
        std::map<std::string, ADDRESS> smap;
public:
                    SymTab();                       // Constructor
                    ~SymTab();                      // Destructor
        void        Add(ADDRESS a, char* s);        // Add a new entry
        const char* find(ADDRESS a);                // Find an entry by address; NULL if none
        ADDRESS     find(const char* s);            // Find an entry by name; NO_ADDRESS if none
#if     0
        char*       FindAfter(ADDRESS& dwAddr);     // Find entry with >= given value
        char*       FindNext(ADDRESS& dwAddr);      // Find next entry (after a Find())
        int         FindIndex(ADDRESS dwAddr);      // Find index for entry
        ADDRESS     FindSym(char* pName);           // Linear search for addr from name
#endif
};

#ifndef NULL
#define NULL 0          // Normally in stdio.h, it seems!
#endif

#endif  // __SYMTAB_H__

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