File contents

/*ident	"@(#)Symbol:Symbol.c	3.1" */
/******************************************************************************
*
* C++ Standard Components, Release 3.0.
*
* Copyright (c) 1991, 1992 AT&T and Unix System Laboratories, Inc.
* Copyright (c) 1988, 1989, 1990 AT&T.  All Rights Reserved.
*
* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T and Unix System
* Laboratories, Inc.  The copyright notice above does not evidence
* any actual or intended publication of such source code.
*
******************************************************************************/

#include "Symbol.h"

Set<String>* Symbol::table_ptr = 0;
const String* Symbol::nil_ = 0;

void Symbol::doinitialize() {
    table_ptr = new Set<String>; 
    nil_ = table_ptr->insert("");
}

Symbol::Symbol(const String& s) {
    sp = nil();
    if (s.length() == 0) return;
    const String* result = table_ptr->contains(s);
    sp = result ? result : table_ptr->insert(s);
}

Symbol::Symbol(const char* cp) {
    sp = nil();
    if (cp == 0) return;
    String temp(cp);
    const String* result = table_ptr->contains(temp);
    sp = result ? result : table_ptr->insert(temp);
}