зеркало из https://github.com/mozilla/pjs.git
113 строки
3.5 KiB
C++
113 строки
3.5 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) 2000 Netscape Communications Corporation. All
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// Rights Reserved.
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#ifndef interpreter_h
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#define interpreter_h
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#include "utilities.h"
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#include "jstypes.h"
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#include "vmtypes.h"
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#include "icodegenerator.h"
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#include "gc_allocator.h"
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namespace JavaScript {
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namespace Interpreter {
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using namespace ICG;
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using namespace JSTypes;
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struct Activation;
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struct Linkage;
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class Context : public gc_base {
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void initContext();
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public:
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explicit Context(World& world, JSScope* aGlobal)
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: mWorld(world), mGlobal(aGlobal), mLinkage(0), mActivation(0), mHasOperatorsPackageLoaded(false) { initContext(); }
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World& getWorld() { return mWorld; }
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JSScope* getGlobalObject() { return mGlobal; }
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InstructionIterator getPC() { return mPC; }
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JSValues& getRegisters();
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ICodeModule* getICode();
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enum Event {
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EV_NONE = 0x0000,
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EV_STEP = 0x0001,
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EV_THROW = 0x0002,
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EV_DEBUG = 0x0004,
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EV_ALL = 0xffff
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};
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class Listener {
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public:
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virtual void listen(Context *context, Event event) = 0;
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};
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void addListener(Listener* listener);
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void removeListener(Listener* listener);
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class Frame {
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public:
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virtual Frame* getNext() = 0;
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virtual void getState(InstructionIterator& pc, JSValues*& registers,
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ICodeModule*& iCode) = 0;
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};
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Frame* getFrames();
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JSValue interpret(ICodeModule* iCode, const JSValues& args);
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void doCall(JSFunction *target, Instruction *pc);
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ICodeModule* genCode(StmtNode *p, const String &fileName);
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JSValue readEvalFile(FILE* in, const String& fileName);
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void addBinaryOperator(BinaryOperator::BinaryOp op, BinaryOperator *fn) { mBinaryOperators[op].push_back(fn); }
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const JSValue findBinaryOverride(JSValue &operand1, JSValue &operand2, BinaryOperator::BinaryOp op);
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bool hasOperatorsPackageLoaded() { return mHasOperatorsPackageLoaded; }
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private:
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void broadcast(Event event);
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void initOperatorsPackage();
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private:
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World& mWorld;
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JSScope* mGlobal;
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Linkage* mLinkage;
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typedef std::vector<Listener*, gc_allocator<Listener*> > ListenerList;
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typedef ListenerList::iterator ListenerIterator;
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ListenerList mListeners;
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Activation* mActivation;
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bool mHasOperatorsPackageLoaded;
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InstructionIterator mPC;
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BinaryOperatorList mBinaryOperators[BinaryOperator::BinaryOperatorCount];
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}; /* class Context */
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} /* namespace Interpreter */
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} /* namespace JavaScript */
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#endif /* interpreter_h */
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