Add debugger protocol request for setting global flags.

src/debug-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 61 matching lines @@
 
 function ScriptTypeFlag(type) {
   return (1 << type);
 }
 
 // Globals.
 var next_response_seq = 0;
 var next_break_point_number = 1;
 var break_points = [];
 var script_break_points = [];
+var debugger_flags = {
+  breakPointsActive: {
+    value: true,
+    getValue: function() { return this.value; },
+    setValue: function(value) {
+      this.value = !!value;
+      %SetDisableBreak(!this.value);
+    }
+  }
+};
 
 
 // Create a new break point object and add it to the list of break points.
 function MakeBreakPoint(source_position, opt_line, opt_column, opt_script_break_point) {
   var break_point = new BreakPoint(source_position, opt_line, opt_column, opt_script_break_point);
   break_points.push(break_point);
   return break_point;
 }
 
 
@@ skipping 147 matching lines @@
   this.break_points_ = [];
 }
 
 
 //Creates a clone of script breakpoint that is linked to another script.
 ScriptBreakPoint.prototype.cloneForOtherScript = function (other_script) {
   var copy = new ScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId,
       other_script.id, this.line_, this.column_, this.groupId_);
   copy.number_ = next_break_point_number++;
   script_break_points.push(copy);
-  
+
   copy.hit_count_ = this.hit_count_;
   copy.active_ = this.active_;
   copy.condition_ = this.condition_;
   copy.ignoreCount_ = this.ignoreCount_;
   return copy;
 }
 
 
 ScriptBreakPoint.prototype.number = function() {
   return this.number_;
@@ skipping 546 matching lines @@
   result += source.substring(prev_pos, pos);
   return result;
 };
 
 
 // Get all the scripts currently loaded. Locating all the scripts is based on
 // scanning the heap.
 Debug.scripts = function() {
   // Collect all scripts in the heap.
   return %DebugGetLoadedScripts();
-}
+};
+
+
+Debug.debuggerFlags = function() {
+  return debugger_flags;
+};
+
 
 function MakeExecutionState(break_id) {
   return new ExecutionState(break_id);
 }
 
 function ExecutionState(break_id) {
   this.break_id = break_id;
   this.selected_frame = 0;
 }
 
@@ skipping 491 matching lines @@
         this.sourceRequest_(request, response);
       } else if (request.command == 'scripts') {
         this.scriptsRequest_(request, response);
       } else if (request.command == 'threads') {
         this.threadsRequest_(request, response);
       } else if (request.command == 'suspend') {
         this.suspendRequest_(request, response);
       } else if (request.command == 'version') {
         this.versionRequest_(request, response);
       } else if (request.command == 'profile') {
-          this.profileRequest_(request, response);
+        this.profileRequest_(request, response);
       } else if (request.command == 'changelive') {
-          this.changeLiveRequest_(request, response);
+        this.changeLiveRequest_(request, response);
+      } else if (request.command == 'flags') {
+        this.debuggerFlagsRequest_(request, response);
       } else {
         throw new Error('Unknown command "' + request.command + '" in request');
       }
     } catch (e) {
       // If there is no response object created one (without command).
       if (!response) {
         response = this.createResponse();
       }
       response.success = false;
       response.message = %ToString(e);
@@ skipping 269 matching lines @@
     return;
   }
 
   // Clear break point.
   Debug.clearBreakPoint(break_point);
 
   // Add the cleared break point number to the response.
   response.body = { breakpoint: break_point }
 }
 
+
 DebugCommandProcessor.prototype.listBreakpointsRequest_ = function(request, response) {
   var array = [];
   for (var i = 0; i < script_break_points.length; i++) {
     var break_point = script_break_points[i];
 
     var description = {
       number: break_point.number(),
       line: break_point.line(),
       column: break_point.column(),
       groupId: break_point.groupId(),
       hit_count: break_point.hit_count(),
       active: break_point.active(),
       condition: break_point.condition(),
       ignoreCount: break_point.ignoreCount(),
       actual_locations: break_point.actual_locations()
     }
-    
+
     if (break_point.type() == Debug.ScriptBreakPointType.ScriptId) {
       description.type = 'scriptId';
       description.script_id = break_point.script_id();
     } else {
       description.type = 'scriptName';
       description.script_name = break_point.script_name();
     }
     array.push(description);
   }
-  
+
   response.body = { breakpoints: array }
 }
 
 
 DebugCommandProcessor.prototype.backtraceRequest_ = function(request, response) {
   // Get the number of frames.
   var total_frames = this.exec_state_.frameCount();
 
   // Create simple response if there are no frames.
   if (total_frames == 0) {
@@ skipping 406 matching lines @@
 
 
 DebugCommandProcessor.prototype.changeLiveRequest_ = function(request, response) {
   if (!Debug.LiveEdit) {
     return response.failed('LiveEdit feature is not supported');
   }
   if (!request.arguments) {
     return response.failed('Missing arguments');
   }
   var script_id = request.arguments.script_id;
-  
+
   var scripts = %DebugGetLoadedScripts();
 
   var the_script = null;
   for (var i = 0; i < scripts.length; i++) {
     if (scripts[i].id == script_id) {
       the_script = scripts[i];
     }
   }
   if (!the_script) {
     response.failed('Script not found');
     return;
   }
 
   var change_log = new Array();
-  
+
   if (!IS_STRING(request.arguments.new_source)) {
     throw "new_source argument expected";
   }
 
   var new_source = request.arguments.new_source;
-  
+
   try {
     Debug.LiveEdit.SetScriptSource(the_script, new_source, change_log);
   } catch (e) {
     if (e instanceof Debug.LiveEdit.Failure) {
       // Let's treat it as a "success" so that body with change_log will be
       // sent back. "change_log" will have "failure" field set.
-      change_log.push( { failure: true, message: e.toString() } ); 
+      change_log.push( { failure: true, message: e.toString() } );
     } else {
       throw e;
     }
   }
   response.body = {change_log: change_log};
 };
 
 
+DebugCommandProcessor.prototype.debuggerFlagsRequest_ = function(request,
+                                                                 response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var flags = request.arguments.flags;
+
+  response.body = { flags: [] };
+  if (!IS_UNDEFINED(flags)) {
+    for (var i = 0; i < flags.length; i++) {
+      var name = flags[i].name;
+      var debugger_flag = debugger_flags[name];
+      if (!debugger_flag) {
+        continue;
+      }
+      if ('value' in flags[i]) {
+        debugger_flag.setValue(flags[i].value);
+      }
+      response.body.flags.push({ name: name, value: debugger_flag.getValue() });
+    }
+  } else {
+    for (var name in debugger_flags) {
+      var value = debugger_flags[name].getValue();
+      response.body.flags.push({ name: name, value: value });
+    }
+  }
+}
+
+
 // Check whether the previously processed command caused the VM to become
 // running.
 DebugCommandProcessor.prototype.isRunning = function() {
   return this.running_;
 }
 
 
 DebugCommandProcessor.prototype.systemBreak = function(cmd, args) {
   return %SystemBreak();
 };
@@ skipping 106 matching lines @@
     case 'string':
     case 'number':
       json = value;
       break
 
     default:
       json = null;
   }
   return json;
 }