Expose generator object internal properties via mirrors.

src/mirror-debugger.js

 // Copyright 2006-2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 "use strict";
 
 // Handle id counters.
 var next_handle_ = 0;
 var next_transient_handle_ = -1;
 
 // Mirror cache.
@@ skipping 913 matching lines @@
     return result;
   } else if (IS_MAP_ITERATOR(value) || IS_SET_ITERATOR(value)) {
     var details = IS_MAP_ITERATOR(value) ? %MapIteratorDetails(value)
                                          : %SetIteratorDetails(value);
     var kind;
     switch (details[2]) {
       case 1: kind = "keys"; break;
       case 2: kind = "values"; break;
       case 3: kind = "entries"; break;
     }
-    var result = [];
-    result.push(new InternalPropertyMirror("[[IteratorHasMore]]", details[0]));
-    result.push(new InternalPropertyMirror("[[IteratorIndex]]", details[1]));
+    var result = [
+      new InternalPropertyMirror("[[IteratorHasMore]]", details[0]),
+      new InternalPropertyMirror("[[IteratorIndex]]", details[1])
+    ];
     if (kind) {
       result.push(new InternalPropertyMirror("[[IteratorKind]]", kind));
     }
     return result;
+  } else if (IS_GENERATOR(value)) {
+    return [
+      new InternalPropertyMirror("[[GeneratorStatus]]",
+                                 GeneratorGetStatus_(value)),
+      new InternalPropertyMirror("[[GeneratorFunction]]",
+                                 %GeneratorGetFunction(value)),
+      new InternalPropertyMirror("[[GeneratorReceiver]]",
+                                 %GeneratorGetReceiver(value))
+    ];
   } else if (ObjectIsPromise(value)) {
-    var result = [];
-    result.push(new InternalPropertyMirror("[[PromiseStatus]]",
-                                           PromiseGetStatus_(value)));
-    result.push(new InternalPropertyMirror("[[PromiseValue]]",
-                                           PromiseGetValue_(value)));
-    return result;
+    return [
+      new InternalPropertyMirror("[[PromiseStatus]]", PromiseGetStatus_(value)),
+      new InternalPropertyMirror("[[PromiseValue]]", PromiseGetValue_(value))
+    ];
   }
   return [];
 }
 
 
 /**
  * Mirror object for functions.
  * @param {function} value The function object reflected by this mirror.
  * @constructor
  * @extends ObjectMirror
@@ skipping 478 matching lines @@
  * @param {Object} data The Generator object
  * @constructor
  * @extends Mirror
  */
 function GeneratorMirror(value) {
   %_CallFunction(this, value, GENERATOR_TYPE, ObjectMirror);
 }
 inherits(GeneratorMirror, ObjectMirror);
 
 
-GeneratorMirror.prototype.status = function() {
-  var continuation = %GeneratorGetContinuation(this.value_);
+function GeneratorGetStatus_(value) {
+  var continuation = %GeneratorGetContinuation(value);
   if (continuation < 0) return "running";
   if (continuation == 0) return "closed";
   return "suspended";
+}
+
+
+GeneratorMirror.prototype.status = function() {
+  return GeneratorGetStatus_(this.value_);
 };
 
 
 GeneratorMirror.prototype.sourcePosition_ = function() {
   return %GeneratorGetSourcePosition(this.value_);
 };
 
 
 GeneratorMirror.prototype.sourceLocation = function() {
   var pos = this.sourcePosition_();
@@ skipping 1570 matching lines @@
   }
   if (!NUMBER_IS_FINITE(value)) {
     if (value > 0) {
       return 'Infinity';
     } else {
       return '-Infinity';
     }
   }
   return value;
 }