substr.cpp

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C++ 代码 · 共 63 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
*    Code as defined in and that are subject to the Sybase Open Watcom
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include <string.h>
#include "substr.h"

void SubStr::out(ostream& o) const {
    o.write(str, len);
}

bool operator==(const SubStr s1, const SubStr s2){
    return (bool) (s1.len == s2.len && memcmp(s1.str, s2.str, s1.len) == 0);
}

Str::Str(const SubStr& s) : SubStr(new char[s.len], s.len) {
    memcpy(str, s.str, s.len);
}

Str::Str(Str& s) : SubStr(s.str, s.len) {
    s.str = NULL;
    s.len = 0;
}

Str::Str() : SubStr((char*) NULL, 0) {
    ;
}


Str::~Str() {
    delete str;
    str = (char*)-1;
    len = -1;
}