mirror-delay.js.svn-base

Google浏览器V8内核代码

FrameMirror.prototype.index = function() {
  return this.index_;
};


FrameMirror.prototype.func = function() {
  // Get the function for this frame from the VM.
  var f = this.details_.func();
  
  // Create a function mirror. NOTE: MakeMirror cannot be used here as the
  // value returned from the VM might be a string if the function for the
  // frame is unresolved.
  if (IS_FUNCTION(f)) {
    return new FunctionMirror(f);
  } else {
    return new UnresolvedFunctionMirror(f);
  }
};


FrameMirror.prototype.receiver = function() {
  return MakeMirror(this.details_.receiver());
};


FrameMirror.prototype.isConstructCall = function() {
  return this.details_.isConstructCall();
};


FrameMirror.prototype.isDebuggerFrame = function() {
  return this.details_.isDebuggerFrame();
};


FrameMirror.prototype.argumentCount = function() {
  return this.details_.argumentCount();
};


FrameMirror.prototype.argumentName = function(index) {
  return this.details_.argumentName(index);
};


FrameMirror.prototype.argumentValue = function(index) {
  return MakeMirror(this.details_.argumentValue(index));
};


FrameMirror.prototype.localCount = function() {
  return this.details_.localCount();
};


FrameMirror.prototype.localName = function(index) {
  return this.details_.localName(index);
};


FrameMirror.prototype.localValue = function(index) {
  return MakeMirror(this.details_.localValue(index));
};


FrameMirror.prototype.sourcePosition = function() {
  return this.details_.sourcePosition();
};


FrameMirror.prototype.sourceLocation = function() {
  if (this.func().resolved() && this.func().script()) {
    return this.func().script().locationFromPosition(this.sourcePosition());
  }
};


FrameMirror.prototype.sourceLine = function() {
  if (this.func().resolved()) {
    var location = this.sourceLocation();
    if (location) {
      return location.line;
    }
  }
};


FrameMirror.prototype.sourceColumn = function() {
  if (this.func().resolved()) {
    var location = this.sourceLocation();
    if (location) {
      return location.column;
    }
  }
};


FrameMirror.prototype.sourceLineText = function() {
  if (this.func().resolved()) {
    var location = this.sourceLocation();
    if (location) {
      return location.sourceText();
    }
  }
};


FrameMirror.prototype.evaluate = function(source, disable_break) {
  var result = %DebugEvaluate(this.break_id_, this.details_.frameId(),
                              source, Boolean(disable_break));
  return MakeMirror(result);
};


FrameMirror.prototype.fillJSON_ = function(content, details) {
  FrameMirror.super_.fillJSONType_.call(this, content);
  content.push(MakeJSONPair_('index', NumberToJSON_(this.index())));
  content.push(MakeJSONPair_('receiver', this.receiver().toJSONProtocol(false)));
  content.push(MakeJSONPair_('func', this.func().toJSONProtocol(false)));
  content.push(MakeJSONPair_('constructCall', BooleanToJSON_(this.isConstructCall())));
  content.push(MakeJSONPair_('debuggerFrame', BooleanToJSON_(this.isDebuggerFrame())));
  var x = new Array(this.argumentCount());
  for (var i = 0; i < this.argumentCount(); i++) {
    arg = new Array();
    var argument_name = this.argumentName(i)
    if (argument_name) {
      arg.push(MakeJSONPair_('name', StringToJSON_(argument_name)));
    }
    arg.push(MakeJSONPair_('value', this.argumentValue(i).toJSONProtocol(false)));
    x[i] = ArrayToJSONObject_(arg);
  }
  content.push(MakeJSONPair_('arguments', ArrayToJSONArray_(x)));
  var x = new Array(this.localCount());
  for (var i = 0; i < this.localCount(); i++) {
    var name = MakeJSONPair_('name', StringToJSON_(this.localName(i)));
    var value = MakeJSONPair_('value', this.localValue(i).toJSONProtocol(false));
    x[i] = '{' + name + ',' + value + '}';
  }
  content.push(MakeJSONPair_('locals', ArrayToJSONArray_(x)));
  content.push(MakeJSONPair_('position', NumberToJSON_(this.sourcePosition())));
  var line = this.sourceLine();
  if (!IS_UNDEFINED(line)) {
    content.push(MakeJSONPair_('line', NumberToJSON_(line)));
  }
  var column = this.sourceColumn();
  if (!IS_UNDEFINED(column)) {
    content.push(MakeJSONPair_('column', NumberToJSON_(column)));
  }
  var source_line_text = this.sourceLineText();
  if (!IS_UNDEFINED(source_line_text)) {
    content.push(MakeJSONPair_('sourceLineText', StringToJSON_(source_line_text)));
  }
}


FrameMirror.prototype.invocationText = function() {
  // Format frame invoaction (receiver, function and arguments).
  var result = '';
  var func = this.func();
  var receiver = this.receiver();
  if (this.isConstructCall()) {
    // For constructor frames display new followed by the function name.
    result += 'new ';
    result += func.name() ? func.name() : '[anonymous]';
  } else   if (this.isDebuggerFrame()) {
    result += '[debugger]';
  } else {
    // If the receiver has a className which is 'global' don't display it.
    var display_receiver = !receiver.className || receiver.className() != 'global';
    if (display_receiver) {
      result += receiver.toText();
    }
    // Try to find the function as a property in the receiver. Include the
    // prototype chain in the lookup.
    var property = new UndefinedMirror();
    if (!receiver.isUndefined()) {
      for (var r = receiver; !r.isNull() && property.isUndefined(); r = r.protoObject()) {
        property = r.lookupProperty(func);
      }
    }
    if (!property.isUndefined()) {
      // The function invoked was found on the receiver. Use the property name
      // for the backtrace.
      if (!property.isIndexed()) {
        if (display_receiver) {
          result += '.';
        }
        result += property.name();
      } else {
        result += '[';
        result += property.name();
        result += ']';
      }
      // Also known as - if the name in the function doesn't match the name
      // under which it was looked up.
      if (func.name() && func.name() != property.name()) {
        result += '(aka ' + func.name() + ')';
      }      
    } else {
      // The function invoked was not found on the receiver. Use the function
      // name if available for the backtrace.
      if (display_receiver) {
        result += '.';
      }
      result += func.name() ? func.name() : '[anonymous]';
    }
  }

  // Render arguments for normal frames.
  if (!this.isDebuggerFrame()) {
    result += '(';
    for (var i = 0; i < this.argumentCount(); i++) {
      if (i != 0) result += ', ';
      if (this.argumentName(i)) {
        result += this.argumentName(i);
        result += '=';
      }
      result += this.argumentValue(i).toText();
    }
    result += ')';
  }
  
  return result;
}


FrameMirror.prototype.sourceAndPositionText = function() {
  // Format source and position.
  var result = '';
  var func = this.func();
  if (func.resolved()) {
    if (func.script()) {
      if (func.script().name()) {
        result += func.script().name();
      } else {
        result += '[unnamed]';
      }
      if (!this.isDebuggerFrame()) {
        var location = this.sourceLocation();
        result += ' line ';
        result += !IS_UNDEFINED(location) ? (location.line + 1) : '?';
        result += ' column ';
        result += !IS_UNDEFINED(location) ? (location.column + 1) : '?';
        if (!IS_UNDEFINED(this.sourcePosition())) {
          result += ' (position ' + (this.sourcePosition() + 1) + ')';
        }
      }
    } else {
      result += '[no source]';
    }
  } else {
    result += '[unresolved]';
  }

  return result;
}


FrameMirror.prototype.localsText = function() {
  // Format local variables.
  var result = '';
  var locals_count = this.localCount()
  if (locals_count > 0) {
    for (var i = 0; i < locals_count; ++i) {
      result += '      var ';
      result += this.localName(i);
      result += ' = ';
      result += this.localValue(i).toText();
      if (i < locals_count - 1) result += '\n';
    }
  }

  return result;
}


FrameMirror.prototype.toText = function(opt_locals) {
  var result = '';
  result += '#' + (this.index() <= 9 ? '0' : '') + this.index();
  result += ' ';
  result += this.invocationText();
  result += ' ';
  result += this.sourceAndPositionText();
  if (opt_locals) {
    result += '\n';
    result += this.localsText();
  }
  return result;
}


/**
 * Mirror object for script source.
 * @param {Script} script The script object
 * @constructor
 * @extends Mirror
 */
function ScriptMirror(script) {
  Mirror.call(this, SCRIPT_TYPE);
  this.script_ = script;
};
inherits(ScriptMirror, Mirror);


ScriptMirror.prototype.name = function() {
  return this.script_.name;
};


ScriptMirror.prototype.lineOffset = function() {
  return this.script_.line_offset;
};


ScriptMirror.prototype.columnOffset = function() {
  return this.script_.column_offset;
};


ScriptMirror.prototype.scriptType = function() {
  return this.script_.type;
};


ScriptMirror.prototype.lineCount = function() {
  return this.script_.lineCount();
};


ScriptMirror.prototype.locationFromPosition = function(position) {
  return this.script_.locationFromPosition(position);
}


ScriptMirror.prototype.sourceSlice = function (opt_from_line, opt_to_line) {
  return this.script_.sourceSlice(opt_from_line, opt_to_line);
}


ScriptMirror.prototype.fillJSON_ = function(content, details) {
  ScriptMirror.super_.fillJSONType_.call(this, content);
  if (this.name()) {
    content.push(MakeJSONPair_('name', StringToJSON_(this.name())));
  }
  content.push(MakeJSONPair_('lineOffset', NumberToJSON_(this.lineOffset())));
  content.push(MakeJSONPair_('columnOffset', NumberToJSON_(this.columnOffset())));
  content.push(MakeJSONPair_('lineCount', NumberToJSON_(this.lineCount())));
  content.push(MakeJSONPair_('scriptType', NumberToJSON_(this.scriptType())));
}
  
  
ScriptMirror.prototype.toText = function() {
  var result = '';
  result += this.name();
  result += ' (lines: ';
  if (this.lineOffset() > 0) {
    result += this.lineOffset();
    result += '-';
    result += this.lineOffset() + this.lineCount() - 1;
  } else {
    result += this.lineCount();
  }
  result += ')';
  return result;
}


function MakeJSONPair_(name, value) {
  return '"' + name + '":' + value;
};


function ArrayToJSONObject_(content) {
  return '{' + content.join(',') + '}';
};


function ArrayToJSONArray_(content) {
  return '[' + content.join(',') + ']';
};


function BooleanToJSON_(value) {
  return String(value); 
};


function NumberToJSON_(value) {
  return String(value); 
};


// Mapping of some control characters to avoid the \uXXXX syntax for most
// commonly used control cahracters.
const ctrlCharMap_ = {
  '\b': '\\b',
  '\t': '\\t',
  '\n': '\\n',
  '\f': '\\f',
  '\r': '\\r',
  '"' : '\\"',
  '\\': '\\\\'
};


// Regular expression testing for ", \ and control characters (0x00 - 0x1F).
const ctrlCharTest_ = new RegExp('["\\\\\x00-\x1F]');


// Regular expression matching ", \ and control characters (0x00 - 0x1F)
// globally.
const ctrlCharMatch_ = new RegExp('["\\\\\x00-\x1F]', 'g');


/**
 * Convert a String to its JSON representation (see http://www.json.org/). To
 * avoid depending on the String object this method calls the functions in
 * string.js directly and not through the value.
 * @param {String} value The String value to format as JSON
 * @return {string} JSON formatted String value
 */
function StringToJSON_(value) {
  // Check for" , \ and control characters (0x00 - 0x1F). No need to call
  // RegExpTest as ctrlchar is constructed using RegExp.
  if (ctrlCharTest_.test(value)) {
    // Replace ", \ and control characters (0x00 - 0x1F).
    return '"' +
      value.replace(ctrlCharMatch_, function (char) {
        // Use charmap if possible.
        var mapped = ctrlCharMap_[char];
        if (mapped) return mapped;
        mapped = char.charCodeAt();
        // Convert control character to unicode escape sequence.
        return '\\u00' +
          %NumberToRadixString(Math.floor(mapped / 16), 16) +
          %NumberToRadixString(mapped % 16, 16);
      })
    + '"';
  }

  // Simple string with no special characters.
  return '"' + value + '"';
};


/**
 * Convert a Date to ISO 8601 format. To avoid depending on the Date object
 * this method calls the functions in date.js directly and not through the
 * value.
 * @param {Date} value The Date value to format as JSON
 * @return {string} JSON formatted Date value
 */
function DateToISO8601_(value) {
  function f(n) {
    return n < 10 ? '0' + n : n;
  }
  function g(n) {
    return n < 10 ? '00' + n : n < 100 ? '0' + n : n;
  }
  return builtins.GetUTCFullYearFrom(value)         + '-' +
          f(builtins.GetUTCMonthFrom(value) + 1)    + '-' +
          f(builtins.GetUTCDateFrom(value))         + 'T' +
          f(builtins.GetUTCHoursFrom(value))        + ':' +
          f(builtins.GetUTCMinutesFrom(value))      + ':' +
          f(builtins.GetUTCSecondsFrom(value))      + '.' +
          g(builtins.GetUTCMillisecondsFrom(value)) + 'Z';
};

/**
 * Convert a Date to ISO 8601 format. To avoid depending on the Date object
 * this method calls the functions in date.js directly and not through the
 * value.
 * @param {Date} value The Date value to format as JSON
 * @return {string} JSON formatted Date value
 */
function DateToJSON_(value) {
  return '"' + DateToISO8601_(value) + '"';
};