112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef world_h___
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#define world_h___
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#include <vector>
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#include "strings.h"
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#include "token.h"
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#include "hash.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
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// B are the 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::identifier if not
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HashNumber hash;
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explicit StringAtom(const String &s): String(s), tokenKind(Token::identifier), hash(hashString(s)) {}
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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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StringAtom &operator[](const char *s) {return operator[](widenCString(s));}
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void clear() { ht.clear(); }
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bool hasEntry(const String &s) { HT::Reference r(ht, s); return r; }
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};
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#ifdef DIKDIK
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namespace JS2Runtime {
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class Context;
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}
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#endif
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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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#ifdef DIKDIK
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std::vector<JS2Runtime::Context *> contextList;
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/* Random number generator state, used by jsmath.c. */
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bool rngInitialized;
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int64 rngMultiplier;
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int64 rngAddend;
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int64 rngMask;
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int64 rngSeed;
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float64 rngDscale;
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#endif
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};
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}
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#endif
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