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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1997-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* John Bandhauer
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the NPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the NPL or the GPL.
*/
package org.mozilla.javascript;
/**
* This interface supports low-level call debug hooks
* <p>
* This interface can be implemented and used to hook JavaScript
* function calls. org.mozilla.javascript.debug.IDebugManager uses this
* system and provides a higher level abstraction more appropriate
* as a debugger API.
*
* @see org.mozilla.javascript.Context#setCallHook
* @see org.mozilla.javascript.debug.IDebugManager
* @author John Bandhauer
*/
public interface DeepCallHook
{
/**
* Notification that a function is about to be called.
*
* @param cx current context
* @param fun function to be called
* @param thisArg the 'this' of the object
* @param args constructor arguments array
* @return arbitrary object which is subsequently passed to postCall
* @see org.mozilla.javascript.debug.NativeDelegate#callDebug
*/
public Object preCall(Context cx, Object fun, Object thisArg, Object[] args);
/**
* Notification that a call returned.
*
* @param cx current context
* @param ref value returned from previous call to preCall
* @param retVal value returned by the callee (null if exception thrown)
* @param e exception thrown by callee (null if none thrown)
* @see org.mozilla.javascript.debug.NativeDelegate#callDebug
*/
public void postCall(Context cx, Object ref, Object retVal,
JavaScriptException e);
}