Support debugger inspection of locals in optimized frames

src/mirror-debugger.js

 // Copyright 2006-2008 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1225 matching lines @@
 
 
 const kFrameDetailsFrameIdIndex = 0;
 const kFrameDetailsReceiverIndex = 1;
 const kFrameDetailsFunctionIndex = 2;
 const kFrameDetailsArgumentCountIndex = 3;
 const kFrameDetailsLocalCountIndex = 4;
 const kFrameDetailsSourcePositionIndex = 5;
 const kFrameDetailsConstructCallIndex = 6;
 const kFrameDetailsAtReturnIndex = 7;
-const kFrameDetailsDebuggerFrameIndex = 8;
+const kFrameDetailsFlagsIndex = 8;
 const kFrameDetailsFirstDynamicIndex = 9;
 
 const kFrameDetailsNameIndex = 0;
 const kFrameDetailsValueIndex = 1;
 const kFrameDetailsNameValueSize = 2;
 
+const kFrameDetailsFlagDebuggerFrame = 1;
+const kFrameDetailsFlagOptimizedFrame = 2;
+const kFrameDetailsFlagInlinedFrame = 4;
+
 /**
  * Wrapper for the frame details information retreived from the VM. The frame
  * details from the VM is an array with the following content. See runtime.cc
  * Runtime_GetFrameDetails.
  *     0: Id
  *     1: Receiver
  *     2: Function
  *     3: Argument count
  *     4: Local count
  *     5: Source position
  *     6: Construct call
  *     7: Is at return
- *     8: Debugger frame
+ *     8: Flags (debugger frame, optimized frame, inlined frame)
  *     Arguments name, value
  *     Locals name, value
  *     Return value if any
  * @param {number} break_id Current break id
  * @param {number} index Frame number
  * @constructor
  */
 function FrameDetails(break_id, index) {
   this.break_id_ = break_id;
   this.details_ = %GetFrameDetails(break_id, index);
@@ skipping 25 matching lines @@
 
 
 FrameDetails.prototype.isAtReturn = function() {
   %CheckExecutionState(this.break_id_);
   return this.details_[kFrameDetailsAtReturnIndex];
 }
 
 
 FrameDetails.prototype.isDebuggerFrame = function() {
   %CheckExecutionState(this.break_id_);
-  return this.details_[kFrameDetailsDebuggerFrameIndex];
+  var f = kFrameDetailsFlagDebuggerFrame;
+  return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
 }
 
 
+FrameDetails.prototype.isOptimizedFrame = function() {
+  %CheckExecutionState(this.break_id_);
+  var f = kFrameDetailsFlagOptimizedFrame;
+  return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
+}
+
+
+FrameDetails.prototype.isInlinedFrame = function() {
+  %CheckExecutionState(this.break_id_);
+  var f = kFrameDetailsFlagInlinedFrame;
+  return (this.details_[kFrameDetailsFlagsIndex] & f) == f;
+}
+
+
 FrameDetails.prototype.argumentCount = function() {
   %CheckExecutionState(this.break_id_);
   return this.details_[kFrameDetailsArgumentCountIndex];
 }
 
 
 FrameDetails.prototype.argumentName = function(index) {
   %CheckExecutionState(this.break_id_);
   if (index >= 0 && index < this.argumentCount()) {
     return this.details_[kFrameDetailsFirstDynamicIndex +
@@ skipping 115 matching lines @@
 FrameMirror.prototype.isAtReturn = function() {
   return this.details_.isAtReturn();
 };
 
 
 FrameMirror.prototype.isDebuggerFrame = function() {
   return this.details_.isDebuggerFrame();
 };
 
 
+FrameMirror.prototype.isOptimizedFrame = function() {
+  return this.details_.isOptimizedFrame();
+};
+
+
+FrameMirror.prototype.isInlinedFrame = function() {
+  return this.details_.isInlinedFrame();
+};
+
+
 FrameMirror.prototype.argumentCount = function() {
   return this.details_.argumentCount();
 };
 
 
 FrameMirror.prototype.argumentName = function(index) {
   return this.details_.argumentName(index);
 };
 
 
@@ skipping 913 matching lines @@
   }
   if (!NUMBER_IS_FINITE(value)) {
     if (value > 0) {
       return 'Infinity';
     } else {
       return '-Infinity';
     }
   }
   return value;
 }