gecko-dev/dom/public/nsIScriptRuntime.h

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* 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 mozilla.org.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mark Hammond (initial development)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsIScriptRuntime_h__
#define nsIScriptRuntime_h__
#include "nsIScriptContext.h"
// {47032A4D-0C22-4125-94B7-864A4B744335}
#define NS_ISCRIPTRUNTIME_IID \
{ 0x47032a4d, 0xc22, 0x4125, { 0x94, 0xb7, 0x86, 0x4a, 0x4b, 0x74, 0x43, 0x35 } }
/**
* A singleton language environment for an application. Responsible for
* initializing and cleaning up the global language environment, and a factory
* for language contexts
*/
class nsIScriptRuntime : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ISCRIPTRUNTIME_IID)
/*
* Return the language ID of this script language
*/
virtual PRUint32 GetScriptTypeID() = 0;
/*
* Called as the language factory is shutting down.
*/
virtual void ShutDown() = 0;
/* Parses a "version string" for the language into a bit-mask used by
* the language implementation. If the specified version is not supported
* an error should be returned. If the specified version is blank, a default
* version should be assumed
*/
virtual nsresult ParseVersion(const nsString &aVersionStr, PRUint32 *verFlags) = 0;
/* Factory for a new context for this language */
virtual nsresult CreateContext(nsIScriptContext **ret) = 0;
/* Memory managment for script objects returned from various
* nsIScriptContext methods. These are identical to those in
* nsIScriptContext, but are useful when a script context is not known.
*/
virtual nsresult DropScriptObject(void *object) = 0;
virtual nsresult HoldScriptObject(void *object) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIScriptRuntime, NS_ISCRIPTRUNTIME_IID)
/* helper functions */
nsresult NS_GetScriptRuntime(const nsAString &aLanguageName,
nsIScriptRuntime **aRuntime);
nsresult NS_GetScriptRuntimeByID(PRUint32 aLanguageID,
nsIScriptRuntime **aRuntime);
#endif // nsIScriptRuntime_h__