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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is mozilla.org code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 * Alternatively, the contents of this file may be used under the terms of
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#ifndef nsJSUtils_h__
#define nsJSUtils_h__

 * This is not a generated file. It contains common utility functions 
 * invoked from the JavaScript code generated from IDL interfaces.
 * The goal of the utility functions is to cut down on the size of
 * the generated code itself.

#include "nsISupports.h"
#include "jsapi.h"
#include "nsString.h"

class nsIDOMEventListener;
class nsIScriptContext;
class nsIScriptGlobalObject;

class nsJSUtils
  static JSBool GetCallingLocation(JSContext* aContext, const char* *aFilename,
                                   PRUint32* aLineno, JSPrincipals* aPrincipals);

  static jsval ConvertStringToJSVal(const nsString& aProp,
                                    JSContext* aContext);

  static PRBool ConvertJSValToXPCObject(nsISupports** aSupports, REFNSIID aIID,
                                        JSContext* aContext, jsval aValue);

  static void ConvertJSValToString(nsAString& aString,
                                   JSContext* aContext, jsval aValue);

  static PRBool ConvertJSValToUint32(PRUint32* aProp, JSContext* aContext,
                                     jsval aValue);

  static nsIScriptGlobalObject *GetStaticScriptGlobal(JSContext* aContext,
                                                      JSObject* aObj);

  static nsIScriptContext *GetStaticScriptContext(JSContext* aContext,
                                                  JSObject* aObj);

  static nsIScriptGlobalObject *GetDynamicScriptGlobal(JSContext *aContext);

  static nsIScriptContext *GetDynamicScriptContext(JSContext *aContext);

class nsDependentJSString : public nsDependentString
  explicit nsDependentJSString(jsval v)
    : nsDependentString((PRUnichar *)::JS_GetStringChars(JSVAL_TO_STRING(v)),

  explicit nsDependentJSString(JSString *str)
    : nsDependentString((PRUnichar *)::JS_GetStringChars(str), ::JS_GetStringLength(str))


#endif /* nsJSUtils_h__ */

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