debug-delay.js.svn-base

Google浏览器V8内核代码

};


Debug.disableBreakPoint = function(break_point_number) {
  var break_point = this.findBreakPoint(break_point_number, false);
  break_point.disable();
};


Debug.changeBreakPointCondition = function(break_point_number, condition) {
  var break_point = this.findBreakPoint(break_point_number, false);
  break_point.setCondition(condition);
};


Debug.changeBreakPointIgnoreCount = function(break_point_number, ignoreCount) {
  if (ignoreCount < 0) {
    throw new Error('Invalid argument');
  }
  var break_point = this.findBreakPoint(break_point_number, false);
  break_point.setIgnoreCount(ignoreCount);
};


Debug.clearBreakPoint = function(break_point_number) {
  var break_point = this.findBreakPoint(break_point_number, true);
  if (break_point) {
    return %ClearBreakPoint(break_point);
  } else {
    break_point = this.findScriptBreakPoint(break_point_number, true);
    if (!break_point) {
      throw new Error('Invalid breakpoint');
    }
  }
};


Debug.clearAllBreakPoints = function() {
  for (var i = 0; i < break_points.length; i++) {
    break_point = break_points[i];
    %ClearBreakPoint(break_point);
  }
  break_points = [];
};


Debug.findScriptBreakPoint = function(break_point_number, remove) {
  var script_break_point;
  for (var i = 0; i < script_break_points.length; i++) {
    if (script_break_points[i].number() == break_point_number) {
      script_break_point = script_break_points[i];
      // Remove the break point from the list if requested.
      if (remove) {
        script_break_point.clear();
        script_break_points.splice(i,1);
      }
      break;
    }
  }
  return script_break_point;
}


// Sets a breakpoint in a script identified through script name at the
// specified source line and column within that line.
Debug.setScriptBreakPoint = function(script_name, opt_line, opt_column, opt_condition) {
  // Create script break point object.
  var script_break_point = new ScriptBreakPoint(script_name, opt_line, opt_column);

  // Assign number to the new script break point and add it.
  script_break_point.number_ = next_break_point_number++;
  script_break_point.setCondition(opt_condition);
  script_break_points.push(script_break_point);

  // Run through all scripts to see it this script break point matches any
  // loaded scripts.
  var scripts = this.scripts();
  for (var i = 0; i < scripts.length; i++) {
    if (script_break_point.matchesScript(scripts[i])) {
      script_break_point.set(scripts[i]);
    }
  }

  return script_break_point.number();
}


Debug.enableScriptBreakPoint = function(break_point_number) {
  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
  script_break_point.enable();
};


Debug.disableScriptBreakPoint = function(break_point_number) {
  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
  script_break_point.disable();
};


Debug.changeScriptBreakPointCondition = function(break_point_number, condition) {
  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
  script_break_point.setCondition(condition);
};


Debug.changeScriptBreakPointIgnoreCount = function(break_point_number, ignoreCount) {
  if (ignoreCount < 0) {
    throw new Error('Invalid argument');
  }
  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
  script_break_point.setIgnoreCount(ignoreCount);
};


Debug.scriptBreakPoints = function() {
  return script_break_points;
}


Debug.clearStepping = function() {
  %ClearStepping();
}

Debug.setBreakOnException = function() {
  return %ChangeBreakOnException(Debug.ExceptionBreak.All, true);
};

Debug.clearBreakOnException = function() {
  return %ChangeBreakOnException(Debug.ExceptionBreak.All, false);
};

Debug.setBreakOnUncaughtException = function() {
  return %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, true);
};

Debug.clearBreakOnUncaughtException = function() {
  return %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, false);
};

Debug.showBreakPoints = function(f, full) {
  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
  var source = full ? this.scriptSource(f) : this.source(f);
  var offset = full ? this.sourcePosition(f) : 0;
  var locations = this.breakLocations(f);
  if (!locations) return source;
  locations.sort(function(x, y) { return x - y; });
  var result = "";
  var prev_pos = 0;
  var pos;
  for (var i = 0; i < locations.length; i++) {
    pos = locations[i] - offset;
    result += source.slice(prev_pos, pos);
    result += "[B" + i + "]";
    prev_pos = pos;
  }
  pos = source.length;
  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();
}

function MakeExecutionState(break_id) {
  return new ExecutionState(break_id);
};

function ExecutionState(break_id) {
  this.break_id = break_id;
  this.selected_frame = 0;
};

ExecutionState.prototype.prepareStep = function(opt_action, opt_count) {
  var action = Debug.StepAction.StepIn;
  if (!IS_UNDEFINED(opt_action)) action = %ToNumber(opt_action);
  var count = opt_count ? %ToNumber(opt_count) : 1;

  return %PrepareStep(this.break_id, action, count);
}

ExecutionState.prototype.evaluateGlobal = function(source, disable_break) {
  return MakeMirror(
      %DebugEvaluateGlobal(this.break_id, source, Boolean(disable_break)));
};

ExecutionState.prototype.frameCount = function() {
  return %GetFrameCount(this.break_id);
};

ExecutionState.prototype.frame = function(opt_index) {
  // If no index supplied return the selected frame.
  if (opt_index == null) opt_index = this.selected_frame;
  return new FrameMirror(this.break_id, opt_index);
};

ExecutionState.prototype.cframesValue = function(opt_from_index, opt_to_index) {
  return %GetCFrames(this.break_id);
};

ExecutionState.prototype.setSelectedFrame = function(index) {
  var i = %ToNumber(index);
  if (i < 0 || i >= this.frameCount()) throw new Error('Illegal frame index.');
  this.selected_frame = i;
};

ExecutionState.prototype.selectedFrame = function() {
  return this.selected_frame;
};

ExecutionState.prototype.debugCommandProcessor = function(protocol) {
  return new DebugCommandProcessor(this, protocol);
};


function MakeBreakEvent(exec_state, break_points_hit) {
  return new BreakEvent(exec_state, break_points_hit);
};


function BreakEvent(exec_state, break_points_hit) {
  this.exec_state_ = exec_state;
  this.break_points_hit_ = break_points_hit;
};


BreakEvent.prototype.func = function() {
  return this.exec_state_.frame(0).func();
};


BreakEvent.prototype.sourceLine = function() {
  return this.exec_state_.frame(0).sourceLine();
};


BreakEvent.prototype.sourceColumn = function() {
  return this.exec_state_.frame(0).sourceColumn();
};


BreakEvent.prototype.sourceLineText = function() {
  return this.exec_state_.frame(0).sourceLineText();
};


BreakEvent.prototype.breakPointsHit = function() {
  return this.break_points_hit_;
};


BreakEvent.prototype.details = function() {
  // Build the break details.
  var details = '';
  if (this.breakPointsHit()) {
    details += 'breakpoint';
    if (this.breakPointsHit().length > 1) {
      details += 's';
    }
    details += ' ';
    for (var i = 0; i < this.breakPointsHit().length; i++) {
      if (i > 0) {
        details += ',';
      }
      details += this.breakPointsHit()[i].number();
    }
  } else {
    details += 'break';
  }
  details += ' in ';
  details += this.exec_state_.frame(0).invocationText();
  details += ' at ';
  details += this.exec_state_.frame(0).sourceAndPositionText();
  details += '\n'
  if (this.func().script()) {
    details += FrameSourceUnderline(this.exec_state_.frame(0));
  }
  return details;
};


BreakEvent.prototype.debugPrompt = function() {
  // Build the debug break prompt.
  if (this.breakPointsHit()) {
    return 'breakpoint';
  } else {
    return 'break';
  }
};


BreakEvent.prototype.toJSONProtocol = function() {
  var o = { seq: next_response_seq++,
            type: "event",
            event: "break",
            body: { invocationText: this.exec_state_.frame(0).invocationText(),
                  }
          }

  // Add script related information to the event if available.
  var script = this.func().script();
  if (script) {
    o.body.sourceLine = this.sourceLine(),
    o.body.sourceColumn = this.sourceColumn(),
    o.body.sourceLineText = this.sourceLineText(),
    o.body.script = { name: script.name(),
                      lineOffset: script.lineOffset(),
                      columnOffset: script.columnOffset(),
                      lineCount: script.lineCount()
                    };
  }

  // Add an Array of break points hit if any.
  if (this.breakPointsHit()) {
    o.body.breakpoints = [];
    for (var i = 0; i < this.breakPointsHit().length; i++) {
      // Find the break point number. For break points originating from a
      // script break point supply the script break point number.
      var breakpoint = this.breakPointsHit()[i];
      var script_break_point = breakpoint.script_break_point();
      var number;
      if (script_break_point) {
        number = script_break_point.number();
      } else {
        number = breakpoint.number();
      }
      o.body.breakpoints.push(number);
    }
  }

  return SimpleObjectToJSON_(o);
};


function MakeExceptionEvent(exec_state, exception, uncaught) {
  return new ExceptionEvent(exec_state, exception, uncaught);
};

function ExceptionEvent(exec_state, exception, uncaught) {
  this.exec_state_ = exec_state;
  this.exception_ = exception;
  this.uncaught_ = uncaught;
};

ExceptionEvent.prototype.uncaught = function() {
  return this.uncaught_;
}

ExceptionEvent.prototype.func = function() {
  return this.exec_state_.frame(0).func();
};


ExceptionEvent.prototype.sourceLine = function() {
  return this.exec_state_.frame(0).sourceLine();
};


ExceptionEvent.prototype.sourceColumn = function() {
  return this.exec_state_.frame(0).sourceColumn();
};


ExceptionEvent.prototype.sourceLineText = function() {
  return this.exec_state_.frame(0).sourceLineText();
};


ExceptionEvent.prototype.details = function() {
  var details = "";
  if (this.uncaught_) {
    details += "Uncaught: ";
  } else {
    details += "Exception: ";
  }

  details += '"';
  details += MakeMirror(this.exception_).toText();
  details += '" at ';
  details += this.exec_state_.frame(0).sourceAndPositionText();
  details += '\n';
  details += FrameSourceUnderline(this.exec_state_.frame(0));

  return details;
};

ExceptionEvent.prototype.debugPrompt = function() {
  if (this.uncaught_) {
    return "uncaught exception";
  } else {
    return "exception";
  }
};

ExceptionEvent.prototype.toJSONProtocol = function() {
  var o = { seq: next_response_seq++,
            type: "event",
            event: "exception",
            body: { uncaught: this.uncaught_,
                    exception: MakeMirror(this.exception_),
                    sourceLine: this.sourceLine(),
                    sourceColumn: this.sourceColumn(),
                    sourceLineText: this.sourceLineText(),
                  }
          }

  // Add script information to the event if available.
  var script = this.func().script();
  if (script) {
    o.body.script = { name: script.name(),
                      lineOffset: script.lineOffset(),
                      columnOffset: script.columnOffset(),
                      lineCount: script.lineCount()
                    };
  }

  return SimpleObjectToJSON_(o);
};

function MakeCompileEvent(script_source, script_name, script_function) {
  return new CompileEvent(script_source, script_name, script_function);
};

function CompileEvent(script_source, script_name, script_function) {
  this.scriptSource = script_source;
  this.scriptName = script_name;
  this.scriptFunction = script_function;
};

CompileEvent.prototype.details = function() {
  var result = "";
  result = "Script added"
  if (this.scriptData) {
    result += ": '";
    result += this.scriptData;
    result += "'";
  }
  return result;
};

CompileEvent.prototype.debugPrompt = function() {
  var result = "source"
  if (this.scriptData) {
    result += " '";
    result += this.scriptData;
    result += "'";
  }
  if (this.func) {
    result += " added";
  } else {
    result += " compiled";
  }
  return result;
};

function MakeNewFunctionEvent(func) {
  return new NewFunctionEvent(func);
};

function NewFunctionEvent(func) {
  this.func = func;
};

NewFunctionEvent.prototype.details = function() {
  var result = "";
  result = "Function added: ";
  result += this.func.name;
  return result;
};

NewFunctionEvent.prototype.debugPrompt = function() {
  var result = "function";
  if (this.func.name) {
    result += " '";
    result += this.func.name;
    result += "'";
  }
  result += " added";
  return result;
};

NewFunctionEvent.prototype.name = function() {
  return this.func.name;
};

NewFunctionEvent.prototype.setBreakPoint = function(p) {
  Debug.setBreakPoint(this.func, p || 0);
};

function DebugCommandProcessor(exec_state) {
  this.exec_state_ = exec_state;
};


// Convenience function for C debugger code to process a text command. This
// function converts the text command to a JSON request, performs the request
// and converts the request to a text result for display. The result is an
// object containing the text result and the intermediate results.
DebugCommandProcessor.prototype.processDebugCommand = function (command) {
  var request;
  var response;
  var text_result;
  var running;