Support re-reading scope variables in protocol and on backed.

Source/bindings/v8/DebuggerScript.js

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 306 matching lines @@
     // Get script ID.
     var script = func.script();
     var sourceID = script && script.id();
 
     // Get location.
     var location  = frameMirror.sourceLocation();
 
     // Get this object.
     var thisObject = frameMirror.details_.receiver();
 
-    // Get scope chain array in format: [<scope type>, <scope object>, <scope type>, <scope object>,...]
     var scopeChain = [];
     var scopeType = [];
     for (var i = 0; i < frameMirror.scopeCount(); i++) {
         var scopeMirror = frameMirror.scope(i);
         scopeType.push(scopeMirror.scopeType());
         scopeChain.push(DebuggerScript._buildScopeObject(scopeMirror));
     }
 
+    // Updates the existing array.
+    function rereadScopes() {
+        for (var i = 0; i < frameMirror.scopeCount(); i++) {
+            var scopeMirror = frameMirror.scope(i);
+            scopeChain[i] = DebuggerScript._buildScopeObject(scopeMirror);
+        }
+    }
+
     function evaluate(expression)
     {
         return frameMirror.evaluate(expression, false).value();
     }
 
     function restart()
     {
         return Debug.LiveEdit.RestartFrame(frameMirror);
     }
 
     function setVariableValue(scopeNumber, variableName, newValue)
     {
         return DebuggerScript._setScopeVariableValue(frameMirror, scopeNumber, variableName, newValue);
     }
 
     return {
         "sourceID": sourceID,
         "line": location ? location.line : 0,
         "column": location ? location.column : 0,
         "functionName": functionName,
         "thisObject": thisObject,
         "scopeChain": scopeChain,
         "scopeType": scopeType,
         "evaluate": evaluate,
         "caller": callerFrame,
         "restart": restart,
-        "setVariableValue": setVariableValue
+        "setVariableValue": setVariableValue,
+        "rereadScopes": rereadScopes
     };
 }
 
 DebuggerScript._buildScopeObject = function(scopeMirror) {
     var scopeObject;
     switch (scopeMirror.scopeType()) {
     case ScopeType.Local:
     case ScopeType.Closure:
     case ScopeType.Catch:
         // For transient objects we create a "persistent" copy that contains
@@ skipping 17 matching lines @@
         break;
     case ScopeType.Block:
         // Unsupported yet. Mustn't be reachable.
         break;
     }
     return scopeObject;
 }
 
 return DebuggerScript;
 })();