JavaScriptCore/kjs/interpreter.h - WebKit - Git at Google

 /*
  *  This file is part of the KDE libraries
  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
  *  Copyright (C) 2003 Apple Computer, Inc.
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public License
  *  along with this library; see the file COPYING.LIB.  If not, write to
  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  *  Boston, MA 02110-1301, USA.
  *
  */

 #ifndef _KJS_INTERPRETER_H_
 #define _KJS_INTERPRETER_H_

 #include "ExecState.h"
 #include "protect.h"
 #include "value.h"
 #include "types.h"

 namespace KJS {

   class ArrayObjectImp;
   class ArrayPrototype;
   class BooleanObjectImp;
   class BooleanPrototype;
   class Context;
   class DateObjectImp;
   class DatePrototype;
   class Debugger;
   class ErrorObjectImp;
   class ErrorPrototype;
   class EvalError;
   class EvalErrorPrototype;
   class FunctionObjectImp;
   class FunctionPrototype;
   class NativeErrorImp;
   class NativeErrorPrototype;
   class NumberObjectImp;
   class NumberPrototype;
   class ObjectObjectImp;
   class ObjectPrototype;
   class RangeError;
   class RangeErrorPrototype;
   class ReferenceError;
   class ReferenceError;
   class ReferenceErrorPrototype;
   class RegExpObjectImp;
   class RegExpPrototype;
   class RuntimeMethod;
   class SavedBuiltins;
   class ScopeChain;
   class StringObjectImp;
   class StringPrototype;
   class SyntaxErrorPrototype;
   class TypeError;
   class TypeErrorPrototype;
   class UriError;
   class UriErrorPrototype;

   /**
    * Interpreter objects can be used to evaluate ECMAScript code. Each
    * interpreter has a global object which is used for the purposes of code
    * evaluation, and also provides access to built-in properties such as
    * " Object" and "Number".
    */
   class Interpreter {
       friend class Collector;
   public:
     /**
      * Creates a new interpreter. The supplied object will be used as the global
      * object for all scripts executed with this interpreter. During
      * constuction, all the standard properties such as "Object" and "Number"
      * will be added to the global object.
      *
      * Note: You should not use the same global object for multiple
      * interpreters.
      *
      * This is due do the fact that the built-in properties are set in the
      * constructor, and if these objects have been modified from another
      * interpreter (e.g. a script modifying String.prototype), the changes will
      * be overridden.
      *
      * @param global The object to use as the global object for this interpreter
      */
     Interpreter(JSObject* globalObject);
     /**
      * Creates a new interpreter. A global object will be created and
      * initialized with the standard global properties.
      */
     Interpreter();

     /**
      * Resets the global object's default properties and adds the default object
      * prototype to its prototype chain.
      */
     void initGlobalObject();

     /**
      * Returns the object that is used as the global object during all script
      * execution performed by this interpreter
      */
     JSObject* globalObject() const;

     /**
      * Returns the execution state object which can be used to execute
      * scripts using this interpreter at a the "global" level, i.e. one
      * with a execution context that has the global object as the "this"
      * value, and who's scope chain contains only the global object.
      *
      * Note: this pointer remains constant for the life of the interpreter
      * and should not be manually deleted.
      *
      * @return The interpreter global execution state object
      */
     virtual ExecState *globalExec();

     /**
      * Parses the supplied ECMAScript code and checks for syntax errors.
      *
      * @param code The code to check
      * @return A normal completion if there were no syntax errors in the code,
      * otherwise a throw completion with the syntax error as its value.
      */
     Completion checkSyntax(const UString& sourceURL, int startingLineNumber, const UString& code);
     Completion checkSyntax(const UString& sourceURL, int startingLineNumber, const UChar* code, int codeLength);

     /**
      * Evaluates the supplied ECMAScript code.
      *
      * Since this method returns a Completion, you should check the type of
      * completion to detect an error or before attempting to access the returned
      * value. For example, if an error occurs during script execution and is not
      * caught by the script, the completion type will be Throw.
      *
      * If the supplied code is invalid, a SyntaxError will be thrown.
      *
      * @param code The code to evaluate
      * @param thisV The value to pass in as the "this" value for the script
      * execution. This should either be jsNull() or an Object.
      * @return A completion object representing the result of the execution.
      */
     Completion evaluate(const UString& sourceURL, int startingLineNumber, const UChar* code, int codeLength, JSValue* thisV = 0);
     Completion evaluate(const UString& sourceURL, int startingLineNumber, const UString& code, JSValue* thisV = 0);

     /**
      * Returns the builtin "Object" object. This is the object that was set
      * as a property of the global object during construction; if the property
      * is replaced by script code, this method will still return the original
      * object.
      *
      * @return The builtin "Object" object
      */
     JSObject *builtinObject() const;

     /**
      * Returns the builtin "Function" object.
      */
     JSObject *builtinFunction() const;

     /**
      * Returns the builtin "Array" object.
      */
     JSObject *builtinArray() const;

     /**
      * Returns the builtin "Boolean" object.
      */
     JSObject *builtinBoolean() const;

     /**
      * Returns the builtin "String" object.
      */
     JSObject *builtinString() const;

     /**
      * Returns the builtin "Number" object.
      */
     JSObject *builtinNumber() const;

     /**
      * Returns the builtin "Date" object.
      */
     JSObject *builtinDate() const;

     /**
      * Returns the builtin "RegExp" object.
      */
     JSObject *builtinRegExp() const;

     /**
      * Returns the builtin "Error" object.
      */
     JSObject *builtinError() const;

     /**
      * Returns the builtin "Object.prototype" object.
      */
     JSObject *builtinObjectPrototype() const;

     /**
      * Returns the builtin "Function.prototype" object.
      */
     JSObject *builtinFunctionPrototype() const;

     /**
      * Returns the builtin "Array.prototype" object.
      */
     JSObject *builtinArrayPrototype() const;

     /**
      * Returns the builtin "Boolean.prototype" object.
      */
     JSObject *builtinBooleanPrototype() const;

     /**
      * Returns the builtin "String.prototype" object.
      */
     JSObject *builtinStringPrototype() const;

     /**
      * Returns the builtin "Number.prototype" object.
      */
     JSObject *builtinNumberPrototype() const;

     /**
      * Returns the builtin "Date.prototype" object.
      */
     JSObject *builtinDatePrototype() const;

     /**
      * Returns the builtin "RegExp.prototype" object.
      */
     JSObject *builtinRegExpPrototype() const;

     /**
      * Returns the builtin "Error.prototype" object.
      */
     JSObject *builtinErrorPrototype() const;

     /**
      * The initial value of "Error" global property
      */
     JSObject *builtinEvalError() const;
     JSObject *builtinRangeError() const;
     JSObject *builtinReferenceError() const;
     JSObject *builtinSyntaxError() const;
     JSObject *builtinTypeError() const;
     JSObject *builtinURIError() const;

     JSObject *builtinEvalErrorPrototype() const;
     JSObject *builtinRangeErrorPrototype() const;
     JSObject *builtinReferenceErrorPrototype() const;
     JSObject *builtinSyntaxErrorPrototype() const;
     JSObject *builtinTypeErrorPrototype() const;
     JSObject *builtinURIErrorPrototype() const;

     enum CompatMode { NativeMode, IECompat, NetscapeCompat };
     /**
      * Call this to enable a compatibility mode with another browser.
      * (by default konqueror is in "native mode").
      * Currently, in KJS, this only changes the behavior of Date::getYear()
      * which returns the full year under IE.
      */
     void setCompatMode(CompatMode mode) { m_compatMode = mode; }
     CompatMode compatMode() const { return m_compatMode; }

     /**
      * Run the garbage collection. Returns true when at least one object
      * was collected; false otherwise.
      */
     static bool collect();

     /**
      * Called during the mark phase of the garbage collector. Subclasses
      * implementing custom mark methods must make sure to chain to this one.
      */
     virtual void mark();

 #ifdef KJS_DEBUG_MEM
     /**
      * @internal
      */
     static void finalCheck();
 #endif

     static bool shouldPrintExceptions();
     static void setShouldPrintExceptions(bool);

     void saveBuiltins (SavedBuiltins&) const;
     void restoreBuiltins (const SavedBuiltins&);

     /**
      * Determine if the value is a global object (for any interpreter).  This may
      * be difficult to determine for multiple uses of JSC in a process that are
      * logically independent of each other.  In the case of WebCore, this method
      * is used to determine if an object is the Window object so we can perform
      * security checks.
      */
     virtual bool isGlobalObject(JSValue*) { return false; }

     /**
      * Find the interpreter for a particular global object.  This should really
      * be a static method, but we can't do that is C++.  Again, as with isGlobalObject()
      * implementation really need to know about all instances of Interpreter
      * created in an application to correctly implement this method.  The only
      * override of this method is currently in WebCore.
      */
     virtual Interpreter* interpreterForGlobalObject(const JSValue*) { return 0; }

     /**
      * Determine if the it is 'safe' to execute code in the target interpreter from an
      * object that originated in this interpreter.  This check is used to enforce WebCore
      * cross frame security rules.  In particular, attempts to access 'bound' objects are
      * not allowed unless isSafeScript returns true.
      */
     virtual bool isSafeScript(const Interpreter*) { return true; }

     // Chained list of interpreters (ring)
     static Interpreter* firstInterpreter() { return s_hook; }
     Interpreter* nextInterpreter() const { return next; }
     Interpreter* prevInterpreter() const { return prev; }

     Debugger* debugger() const { return m_debugger; }
     void setDebugger(Debugger* d) { m_debugger = d; }

     void setContext(Context* c) { m_context = c; }
     Context* context() const { return m_context; }

     static Interpreter* interpreterWithGlobalObject(JSObject*);

     void setTimeoutTime(unsigned timeoutTime) { m_timeoutTime = timeoutTime; }

     void startTimeoutCheck();
     void stopTimeoutCheck();

     bool timedOut();

     void ref() { ++m_refCount; }
     void deref() { if (--m_refCount <= 0) delete this; }
     int refCount() const { return m_refCount; }

 protected:
     virtual ~Interpreter(); // only deref should delete us
     virtual bool shouldInterruptScript() const { return true; }

     unsigned m_timeoutTime;

 private:
     void init();

     void resetTimeoutCheck();
     bool checkTimeout();

     // Uncopyable
     Interpreter(const Interpreter&);
     Interpreter operator=(const Interpreter&);

     int m_refCount;

     ExecState m_globalExec;

     // Chained list of interpreters (ring) - for collector
     static Interpreter* s_hook;
     Interpreter *next, *prev;

     int m_recursion;

     Debugger* m_debugger;
     Context* m_context;
     CompatMode m_compatMode;

     unsigned m_timeAtLastCheckTimeout;
     unsigned m_timeExecuting;
     unsigned m_timeoutCheckCount;

     unsigned m_tickCount;
     unsigned m_ticksUntilNextTimeoutCheck;

     JSObject* m_globalObject;

     ObjectObjectImp* m_Object;
     FunctionObjectImp* m_Function;
     ArrayObjectImp* m_Array;
     BooleanObjectImp* m_Boolean;
     StringObjectImp* m_String;
     NumberObjectImp* m_Number;
     DateObjectImp* m_Date;
     RegExpObjectImp* m_RegExp;
     ErrorObjectImp* m_Error;

     ObjectPrototype* m_ObjectPrototype;
     FunctionPrototype* m_FunctionPrototype;
     ArrayPrototype* m_ArrayPrototype;
     BooleanPrototype* m_BooleanPrototype;
     StringPrototype* m_StringPrototype;
     NumberPrototype* m_NumberPrototype;
     DatePrototype* m_DatePrototype;
     RegExpPrototype* m_RegExpPrototype;
     ErrorPrototype* m_ErrorPrototype;

     NativeErrorImp* m_EvalError;
     NativeErrorImp* m_RangeError;
     NativeErrorImp* m_ReferenceError;
     NativeErrorImp* m_SyntaxError;
     NativeErrorImp* m_TypeError;
     NativeErrorImp* m_UriError;

     NativeErrorPrototype* m_EvalErrorPrototype;
     NativeErrorPrototype* m_RangeErrorPrototype;
     NativeErrorPrototype* m_ReferenceErrorPrototype;
     NativeErrorPrototype* m_SyntaxErrorPrototype;
     NativeErrorPrototype* m_TypeErrorPrototype;
     NativeErrorPrototype* m_UriErrorPrototype;
   };

   inline bool Interpreter::timedOut()
   {
       m_tickCount++;

       if (m_tickCount != m_ticksUntilNextTimeoutCheck)
           return false;

       return checkTimeout();
   }

 } // namespace

 #endif // _KJS_INTERPRETER_H_
	/*
	* This file is part of the KDE libraries
	* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
	* Copyright (C) 2001 Peter Kelly (pmk@post.com)
	* Copyright (C) 2003 Apple Computer, Inc.
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Library General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Library General Public License for more details.
	*
	* You should have received a copy of the GNU Library General Public License
	* along with this library; see the file COPYING.LIB. If not, write to
	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*
	*/

	#ifndef _KJS_INTERPRETER_H_
	#define _KJS_INTERPRETER_H_

	#include "ExecState.h"
	#include "protect.h"
	#include "value.h"
	#include "types.h"

	namespace KJS {

	class ArrayObjectImp;
	class ArrayPrototype;
	class BooleanObjectImp;
	class BooleanPrototype;
	class Context;
	class DateObjectImp;
	class DatePrototype;
	class Debugger;
	class ErrorObjectImp;
	class ErrorPrototype;
	class EvalError;
	class EvalErrorPrototype;
	class FunctionObjectImp;
	class FunctionPrototype;
	class NativeErrorImp;
	class NativeErrorPrototype;
	class NumberObjectImp;
	class NumberPrototype;
	class ObjectObjectImp;
	class ObjectPrototype;
	class RangeError;
	class RangeErrorPrototype;
	class ReferenceError;
	class ReferenceError;
	class ReferenceErrorPrototype;
	class RegExpObjectImp;
	class RegExpPrototype;
	class RuntimeMethod;
	class SavedBuiltins;
	class ScopeChain;
	class StringObjectImp;
	class StringPrototype;
	class SyntaxErrorPrototype;
	class TypeError;
	class TypeErrorPrototype;
	class UriError;
	class UriErrorPrototype;

	/**
	* Interpreter objects can be used to evaluate ECMAScript code. Each
	* interpreter has a global object which is used for the purposes of code
	* evaluation, and also provides access to built-in properties such as
	* " Object" and "Number".
	*/
	class Interpreter {
	friend class Collector;
	public:
	/**
	* Creates a new interpreter. The supplied object will be used as the global
	* object for all scripts executed with this interpreter. During
	* constuction, all the standard properties such as "Object" and "Number"
	* will be added to the global object.
	*
	* Note: You should not use the same global object for multiple
	* interpreters.
	*
	* This is due do the fact that the built-in properties are set in the
	* constructor, and if these objects have been modified from another
	* interpreter (e.g. a script modifying String.prototype), the changes will
	* be overridden.
	*
	* @param global The object to use as the global object for this interpreter
	*/
	Interpreter(JSObject* globalObject);
	/**
	* Creates a new interpreter. A global object will be created and
	* initialized with the standard global properties.
	*/
	Interpreter();

	/**
	* Resets the global object's default properties and adds the default object
	* prototype to its prototype chain.
	*/
	void initGlobalObject();

	/**
	* Returns the object that is used as the global object during all script
	* execution performed by this interpreter
	*/
	JSObject* globalObject() const;

	/**
	* Returns the execution state object which can be used to execute
	* scripts using this interpreter at a the "global" level, i.e. one
	* with a execution context that has the global object as the "this"
	* value, and who's scope chain contains only the global object.
	*
	* Note: this pointer remains constant for the life of the interpreter
	* and should not be manually deleted.
	*
	* @return The interpreter global execution state object
	*/
	virtual ExecState *globalExec();

	/**
	* Parses the supplied ECMAScript code and checks for syntax errors.
	*
	* @param code The code to check
	* @return A normal completion if there were no syntax errors in the code,
	* otherwise a throw completion with the syntax error as its value.
	*/
	Completion checkSyntax(const UString& sourceURL, int startingLineNumber, const UString& code);
	Completion checkSyntax(const UString& sourceURL, int startingLineNumber, const UChar* code, int codeLength);

	/**
	* Evaluates the supplied ECMAScript code.
	*
	* Since this method returns a Completion, you should check the type of
	* completion to detect an error or before attempting to access the returned
	* value. For example, if an error occurs during script execution and is not
	* caught by the script, the completion type will be Throw.
	*
	* If the supplied code is invalid, a SyntaxError will be thrown.
	*
	* @param code The code to evaluate
	* @param thisV The value to pass in as the "this" value for the script
	* execution. This should either be jsNull() or an Object.
	* @return A completion object representing the result of the execution.
	*/
	Completion evaluate(const UString& sourceURL, int startingLineNumber, const UChar* code, int codeLength, JSValue* thisV = 0);
	Completion evaluate(const UString& sourceURL, int startingLineNumber, const UString& code, JSValue* thisV = 0);

	/**
	* Returns the builtin "Object" object. This is the object that was set
	* as a property of the global object during construction; if the property
	* is replaced by script code, this method will still return the original
	* object.
	*
	* @return The builtin "Object" object
	*/
	JSObject *builtinObject() const;

	/**
	* Returns the builtin "Function" object.
	*/
	JSObject *builtinFunction() const;

	/**
	* Returns the builtin "Array" object.
	*/
	JSObject *builtinArray() const;

	/**
	* Returns the builtin "Boolean" object.
	*/
	JSObject *builtinBoolean() const;

	/**
	* Returns the builtin "String" object.
	*/
	JSObject *builtinString() const;

	/**
	* Returns the builtin "Number" object.
	*/
	JSObject *builtinNumber() const;

	/**
	* Returns the builtin "Date" object.
	*/
	JSObject *builtinDate() const;

	/**
	* Returns the builtin "RegExp" object.
	*/
	JSObject *builtinRegExp() const;

	/**
	* Returns the builtin "Error" object.
	*/
	JSObject *builtinError() const;

	/**
	* Returns the builtin "Object.prototype" object.
	*/
	JSObject *builtinObjectPrototype() const;

	/**
	* Returns the builtin "Function.prototype" object.
	*/
	JSObject *builtinFunctionPrototype() const;

	/**
	* Returns the builtin "Array.prototype" object.
	*/
	JSObject *builtinArrayPrototype() const;

	/**
	* Returns the builtin "Boolean.prototype" object.
	*/
	JSObject *builtinBooleanPrototype() const;

	/**
	* Returns the builtin "String.prototype" object.
	*/
	JSObject *builtinStringPrototype() const;

	/**
	* Returns the builtin "Number.prototype" object.
	*/
	JSObject *builtinNumberPrototype() const;

	/**
	* Returns the builtin "Date.prototype" object.
	*/
	JSObject *builtinDatePrototype() const;

	/**
	* Returns the builtin "RegExp.prototype" object.
	*/
	JSObject *builtinRegExpPrototype() const;

	/**
	* Returns the builtin "Error.prototype" object.
	*/
	JSObject *builtinErrorPrototype() const;

	/**
	* The initial value of "Error" global property
	*/
	JSObject *builtinEvalError() const;
	JSObject *builtinRangeError() const;
	JSObject *builtinReferenceError() const;
	JSObject *builtinSyntaxError() const;
	JSObject *builtinTypeError() const;
	JSObject *builtinURIError() const;

	JSObject *builtinEvalErrorPrototype() const;
	JSObject *builtinRangeErrorPrototype() const;
	JSObject *builtinReferenceErrorPrototype() const;
	JSObject *builtinSyntaxErrorPrototype() const;
	JSObject *builtinTypeErrorPrototype() const;
	JSObject *builtinURIErrorPrototype() const;

	enum CompatMode { NativeMode, IECompat, NetscapeCompat };
	/**
	* Call this to enable a compatibility mode with another browser.
	* (by default konqueror is in "native mode").
	* Currently, in KJS, this only changes the behavior of Date::getYear()
	* which returns the full year under IE.
	*/
	void setCompatMode(CompatMode mode) { m_compatMode = mode; }
	CompatMode compatMode() const { return m_compatMode; }

	/**
	* Run the garbage collection. Returns true when at least one object
	* was collected; false otherwise.
	*/
	static bool collect();

	/**
	* Called during the mark phase of the garbage collector. Subclasses
	* implementing custom mark methods must make sure to chain to this one.
	*/
	virtual void mark();

	#ifdef KJS_DEBUG_MEM
	/**
	* @internal
	*/
	static void finalCheck();
	#endif

	static bool shouldPrintExceptions();
	static void setShouldPrintExceptions(bool);

	void saveBuiltins (SavedBuiltins&) const;
	void restoreBuiltins (const SavedBuiltins&);

	/**
	* Determine if the value is a global object (for any interpreter). This may
	* be difficult to determine for multiple uses of JSC in a process that are
	* logically independent of each other. In the case of WebCore, this method
	* is used to determine if an object is the Window object so we can perform
	* security checks.
	*/
	virtual bool isGlobalObject(JSValue*) { return false; }

	/**
	* Find the interpreter for a particular global object. This should really
	* be a static method, but we can't do that is C++. Again, as with isGlobalObject()
	* implementation really need to know about all instances of Interpreter
	* created in an application to correctly implement this method. The only
	* override of this method is currently in WebCore.
	*/
	virtual Interpreter* interpreterForGlobalObject(const JSValue*) { return 0; }

	/**
	* Determine if the it is 'safe' to execute code in the target interpreter from an
	* object that originated in this interpreter. This check is used to enforce WebCore
	* cross frame security rules. In particular, attempts to access 'bound' objects are
	* not allowed unless isSafeScript returns true.
	*/
	virtual bool isSafeScript(const Interpreter*) { return true; }

	// Chained list of interpreters (ring)
	static Interpreter* firstInterpreter() { return s_hook; }
	Interpreter* nextInterpreter() const { return next; }
	Interpreter* prevInterpreter() const { return prev; }

	Debugger* debugger() const { return m_debugger; }
	void setDebugger(Debugger* d) { m_debugger = d; }

	void setContext(Context* c) { m_context = c; }
	Context* context() const { return m_context; }

	static Interpreter* interpreterWithGlobalObject(JSObject*);

	void setTimeoutTime(unsigned timeoutTime) { m_timeoutTime = timeoutTime; }

	void startTimeoutCheck();
	void stopTimeoutCheck();

	bool timedOut();

	void ref() { ++m_refCount; }
	void deref() { if (--m_refCount <= 0) delete this; }
	int refCount() const { return m_refCount; }

	protected:
	virtual ~Interpreter(); // only deref should delete us
	virtual bool shouldInterruptScript() const { return true; }

	unsigned m_timeoutTime;

	private:
	void init();

	void resetTimeoutCheck();
	bool checkTimeout();

	// Uncopyable
	Interpreter(const Interpreter&);
	Interpreter operator=(const Interpreter&);

	int m_refCount;

	ExecState m_globalExec;

	// Chained list of interpreters (ring) - for collector
	static Interpreter* s_hook;
	Interpreter next, prev;

	int m_recursion;

	Debugger* m_debugger;
	Context* m_context;
	CompatMode m_compatMode;

	unsigned m_timeAtLastCheckTimeout;
	unsigned m_timeExecuting;
	unsigned m_timeoutCheckCount;

	unsigned m_tickCount;
	unsigned m_ticksUntilNextTimeoutCheck;

	JSObject* m_globalObject;

	ObjectObjectImp* m_Object;
	FunctionObjectImp* m_Function;
	ArrayObjectImp* m_Array;
	BooleanObjectImp* m_Boolean;
	StringObjectImp* m_String;
	NumberObjectImp* m_Number;
	DateObjectImp* m_Date;
	RegExpObjectImp* m_RegExp;
	ErrorObjectImp* m_Error;

	ObjectPrototype* m_ObjectPrototype;
	FunctionPrototype* m_FunctionPrototype;
	ArrayPrototype* m_ArrayPrototype;
	BooleanPrototype* m_BooleanPrototype;
	StringPrototype* m_StringPrototype;
	NumberPrototype* m_NumberPrototype;
	DatePrototype* m_DatePrototype;
	RegExpPrototype* m_RegExpPrototype;
	ErrorPrototype* m_ErrorPrototype;

	NativeErrorImp* m_EvalError;
	NativeErrorImp* m_RangeError;
	NativeErrorImp* m_ReferenceError;
	NativeErrorImp* m_SyntaxError;
	NativeErrorImp* m_TypeError;
	NativeErrorImp* m_UriError;

	NativeErrorPrototype* m_EvalErrorPrototype;
	NativeErrorPrototype* m_RangeErrorPrototype;
	NativeErrorPrototype* m_ReferenceErrorPrototype;
	NativeErrorPrototype* m_SyntaxErrorPrototype;
	NativeErrorPrototype* m_TypeErrorPrototype;
	NativeErrorPrototype* m_UriErrorPrototype;
	};

	inline bool Interpreter::timedOut()
	{
	m_tickCount++;

	if (m_tickCount != m_ticksUntilNextTimeoutCheck)
	return false;

	return checkTimeout();
	}

	} // namespace

	#endif // _KJS_INTERPRETER_H_