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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, 1998.
*
* 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):
*
* 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.
*/
// DEBUG API class
package org.mozilla.javascript.debug;
/**
* This interface represents a program counter location within a script.
* <p>
* This interface is implemented by the debug system. Consumers of the debug
* system should never need to create their own IPC objects. The
* debug system would certainly not recognize such objects.
*
* @author John Bandhauer
* @see org.mozilla.javascript.debug.IScript
* @see org.mozilla.javascript.debug.ISourceLocation
*/
public interface IPC
{
/**
* Get the script to which the pc pertains.
* <p>
* (immutable while pc is valid)
* @return the script
*/
public IScript getScript();
/**
* Get the wrapped numerical program counter value.
* <p>
* NOTE: this may not directly map to a memory location and is
* not applicable to diferent scripts. It should be treated as
* an abstract value, but it is guaranteed that no two distinct
* IPC objects associated with the same IScript will have identical
* pc values.
* <p>
* (immutable while pc is valid)
* @return the program counter integer
*/
public int getPC();
/**
* Determine if the object is valid.
* <p>
* This IPC will be set invalid when the script to which it pertains
* is set invalid.
*
* @return is the Object valid
* @see org.mozilla.javascript.debug.IScript#isValid
*/
public boolean isValid();
/**
* Get the object that describes the source of thie location.
* <p>
* This IPC will be set invalid when the script to which it pertains
* is set invalid.
*
* @return source location object
* @see org.mozilla.javascript.debug.ISourceLocation
*/
public ISourceLocation getSourceLocation();
}