(not part of client build) initial checkin of mozilla/js/jsdj (migrated from ns/js/jsdj)

git-svn-id: svn://10.0.0.236/trunk@10115 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/js/jsdj/classes/com/netscape/jsdebugging/api/JSStackFrameInfo.java

@@ -0,0 +1,45 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+package com.netscape.jsdebugging.api;
+
+
+/**
+ * This interface provides access to the execution stack of a thread.
+ * It has several subinterfacees to distinguish between different kinds of
+ * stack frames: these currently include activations of Java methods
+ * or JavaScript functions.
+ * It is possible that synchronize blocks and try blocks deserve their own
+ * stack frames - to allow for later extensions a debugger should skip over
+ * stack frames it doesn't understand.
+ * Note that this appears very Java-specific.  However, multiple threads and
+ * exceptions are relevant to JavaScript as well because of its
+ * interoperation with Java.
+ */
+public interface JSStackFrameInfo extends StackFrameInfo
+{
+    public Value getCallObject()
+        throws InvalidInfoException;
+
+    public Value getScopeChain()
+        throws InvalidInfoException;
+
+    public Value getThis()
+        throws InvalidInfoException;
+}
+