61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef _STRING_POOL_H_
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#define _STRING_POOL_H_
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#include "HashTable.h"
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class StrNode {
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int32 dummy;
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};
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class StringPool : private HashTable<StrNode> {
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public:
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StringPool(Pool &p) : HashTable<StrNode>(p) { }
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/* Intern "str" if not already interned and return a pointer to
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* the interned string
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*/
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const char *intern(const char *str) {
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int hashIndex;
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const char *key;
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if ((key = HashTable<StrNode>::get(str, 0, hashIndex)) != 0)
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return key;
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return add(str, node, hashIndex);
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}
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/* Returns a pointer to the interned string if it exists, NULL
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* otherwise
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*/
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const char *get(const char *str) {
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int hashIndex;
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return HashTable<StrNode>::get(str, 0, hashIndex);
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}
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private:
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StrNode node;
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};
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#endif /* _STRING_POOL_H_ */
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