mrstrhdl.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 87 行

/****************************************************************************
*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    This file contains Original Code and/or Modifications of Original
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#ifndef __MRSTRHDL_H__
#define __MRSTRHDL_H__

#include <string.h>     // need strlen for hashing

#include "brmerge.h"
#include "patricia.h"

class MergeStringHdl {
public:
                    MergeStringHdl() : _str( NULL ) {}
                    MergeStringHdl( const char * str ) { copyString( str ); }
                    MergeStringHdl( const MergeStringHdl& other ) {
                        _str = other._str;
                    }
                    ~MergeStringHdl() {}

    bool            operator< ( const MergeStringHdl& o ) const {
                        unsigned long me = (unsigned long) _str;
                        unsigned long other = (unsigned long) o._str;
                        return( me < other );
                    }
    bool            operator== ( const MergeStringHdl& o ) const {
                        unsigned long me = (unsigned long) _str;
                        unsigned long other = (unsigned long) o._str;
                        return( me == other );
                    }
    const char *    getString() const {
                        return _str;
                    }

    MergeStringHdl& operator= ( const MergeStringHdl& other ) {
                        _str = other._str;
                        return *this;
                    };
    MergeStringHdl& operator= ( const char * str ) {
                        copyString( str );
                        return *this;
                    };
    uint            hashVal() const;
    static uint     getHashVal( const MergeStringHdl & s ) {
                        return s.hashVal();
                    }

    static void     ragnarok();
private:
    void            copyString( const char * str ) {
                        _str = _strings.insert( str );
                    }
    const char *        _str;
    static PatriciaTree _strings;
};

#endif // __MRSTRHDL_H__