зеркало из https://github.com/mozilla/pjs.git
68 строки
1.9 KiB
C++
68 строки
1.9 KiB
C++
// -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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//
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// The contents of this file are subject to the Netscape Public
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// License Version 1.1 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of
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// the License at http://www.mozilla.org/NPL/
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//
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// Software distributed under the License is distributed on an "AS
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// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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// implied. See the License for the specific language governing
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// rights and limitations under the License.
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//
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// The Original Code is the JavaScript 2 Prototype.
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//
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// The Initial Developer of the Original Code is Netscape
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// Communications Corporation. Portions created by Netscape are
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// Copyright (C) 1998 Netscape Communications Corporation. All
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// Rights Reserved.
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#ifndef world_h
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#define world_h
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#include "utilities.h"
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#include "hash.h"
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#include "parser.h"
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namespace JavaScript {
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//
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// String atom management
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//
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// A StringAtom is a String for which the following guarantee applies:
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// StringAtoms A and B have the same character sequences if and only if A and B are the
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// same StringAtom.
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class StringAtom: public String {
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public:
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Token::Kind tokenKind; // Token::Kind if this is a keyword; Token::Id if not
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explicit StringAtom(const String &s): String(s), tokenKind(Token::Id) {}
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private:
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StringAtom(const StringAtom&); // No copy constructor
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void operator=(const StringAtom&); // No assignment operator
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};
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inline bool operator==(const StringAtom &s1, const StringAtom &s2) {return &s1 == &s2;}
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inline bool operator!=(const StringAtom &s1, const StringAtom &s2) {return &s1 != &s2;}
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class StringAtomTable {
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typedef HashTable<StringAtom, const String&> HT;
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HT ht;
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public:
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StringAtom &operator[](const String &s);
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};
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class World {
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public:
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StringAtomTable identifiers;
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World();
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};
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}
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#endif
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