Version 0.8.10.2

dart/third_party/pkg/js/lib/dart_interop.js

Index: dart/third_party/pkg/js/lib/dart_interop.js
===================================================================
--- dart/third_party/pkg/js/lib/dart_interop.js	(revision 29787)
+++ dart/third_party/pkg/js/lib/dart_interop.js	(working copy)
@@ -1,576 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// THIS FILE IS AUTO GENERATED.  PLEASE DO NOT EDIT.
-
-// TODO(vsm): Move this file once we determine where assets should go.  See
-// http://dartbug.com/6101.
-
-(function() {
-  // Proxy support for js.dart.
-
-  var globalContext = window;
-
-  // Support for binding the receiver (this) in proxied functions.
-  function bindIfFunction(f, _this) {
-    if (typeof(f) != "function") {
-      return f;
-    } else {
-      return new BoundFunction(_this, f);
-    }
-  }
-
-  function unbind(obj) {
-    if (obj instanceof BoundFunction) {
-      return obj.object;
-    } else {
-      return obj;
-    }
-  }
-
-  function getBoundThis(obj) {
-    if (obj instanceof BoundFunction) {
-      return obj._this;
-    } else {
-      return globalContext;
-    }
-  }
-
-  function BoundFunction(_this, object) {
-    this._this = _this;
-    this.object = object;
-  }
-
-  // Table for local objects and functions that are proxied.
-  function ProxiedObjectTable() {
-    // Name for debugging.
-    this.name = 'js-ref';
-
-    // Table from IDs to JS objects.
-    this.map = {};
-
-    // Generator for new IDs.
-    this._nextId = 0;
-
-    // Counter for deleted proxies.
-    this._deletedCount = 0;
-
-    // Flag for one-time initialization.
-    this._initialized = false;
-
-    // Ports for managing communication to proxies.
-    this.port = new ReceivePortSync();
-    this.sendPort = this.port.toSendPort();
-
-    // Set of IDs that are global.
-    // These will not be freed on an exitScope().
-    this.globalIds = {};
-
-    // Stack of scoped handles.
-    this.handleStack = [];
-
-    // Stack of active scopes where each value is represented by the size of
-    // the handleStack at the beginning of the scope.  When an active scope
-    // is popped, the handleStack is restored to where it was when the
-    // scope was entered.
-    this.scopeIndices = [];
-  }
-
-  // Number of valid IDs.  This is the number of objects (global and local)
-  // kept alive by this table.
-  ProxiedObjectTable.prototype.count = function () {
-    return Object.keys(this.map).length;
-  }
-
-  // Number of total IDs ever allocated.
-  ProxiedObjectTable.prototype.total = function () {
-    return this.count() + this._deletedCount;
-  }
-
-  // Adds an object to the table and return an ID for serialization.
-  ProxiedObjectTable.prototype.add = function (obj) {
-    if (this.scopeIndices.length == 0) {
-      throw "Cannot allocate a proxy outside of a scope.";
-    }
-    // TODO(vsm): Cache refs for each obj?
-    var ref = this.name + '-' + this._nextId++;
-    this.handleStack.push(ref);
-    this.map[ref] = obj;
-    return ref;
-  }
-
-  ProxiedObjectTable.prototype._initializeOnce = function () {
-    if (!this._initialized) {
-      this._initialize();
-      this._initialized = true;
-    }
-  }
-
-  // Enters a new scope for this table.
-  ProxiedObjectTable.prototype.enterScope = function() {
-    this._initializeOnce();
-    this.scopeIndices.push(this.handleStack.length);
-  }
-
-  // Invalidates all non-global IDs in the current scope and
-  // exit the current scope.
-  ProxiedObjectTable.prototype.exitScope = function() {
-    var start = this.scopeIndices.pop();
-    for (var i = start; i < this.handleStack.length; ++i) {
-      var key = this.handleStack[i];
-      if (!this.globalIds.hasOwnProperty(key)) {
-        delete this.map[this.handleStack[i]];
-        this._deletedCount++;
-      }
-    }
-    this.handleStack = this.handleStack.splice(0, start);
-  }
-
-  // Makes this ID globally scope.  It must be explicitly invalidated.
-  ProxiedObjectTable.prototype.globalize = function(id) {
-    this.globalIds[id] = true;
-  }
-
-  // Invalidates this ID, potentially freeing its corresponding object.
-  ProxiedObjectTable.prototype.invalidate = function(id) {
-    var old = this.get(id);
-    delete this.globalIds[id];
-    delete this.map[id];
-    this._deletedCount++;
-  }
-
-  // Gets the object or function corresponding to this ID.
-  ProxiedObjectTable.prototype.get = function (id) {
-    if (!this.map.hasOwnProperty(id)) {
-      throw 'Proxy ' + id + ' has been invalidated.'
-    }
-    return this.map[id];
-  }
-
-  ProxiedObjectTable.prototype._initialize = function () {
-    // Configure this table's port to forward methods, getters, and setters
-    // from the remote proxy to the local object.
-    var table = this;
-
-    this.port.receive(function (message) {
-      // TODO(vsm): Support a mechanism to register a handler here.
-      try {
-        var object = table.get(message[0]);
-        var receiver = unbind(object);
-        var member = message[1];
-        var kind = message[2];
-        var args = message[3].map(deserialize);
-        if (kind == 'get') {
-          // Getter.
-          var field = member;
-          if (field in receiver && args.length == 0) {
-            var result = bindIfFunction(receiver[field], receiver);
-            return [ 'return', serialize(result) ];
-          }
-        } else if (kind == 'set') {
-          // Setter.
-          var field = member;
-          if (args.length == 1) {
-            return [ 'return', serialize(receiver[field] = args[0]) ];
-          }
-        } else if (kind == 'apply') {
-          // Direct function invocation.
-          var _this = getBoundThis(object);
-          return [ 'return', serialize(receiver.apply(_this, args)) ];
-        } else if (member == '[]' && args.length == 1) {
-          // Index getter.
-          var result = bindIfFunction(receiver[args[0]], receiver);
-          return [ 'return', serialize(result) ];
-        } else if (member == '[]=' && args.length == 2) {
-          // Index setter.
-          return [ 'return', serialize(receiver[args[0]] = args[1]) ];
-        } else {
-          // Member function invocation.
-          var f = receiver[member];
-          if (f) {
-            var result = f.apply(receiver, args);
-            return [ 'return', serialize(result) ];
-          }
-        }
-        return [ 'none' ];
-      } catch (e) {
-        return [ 'throws', e.toString() ];
-      }
-    });
-  }
-
-  // Singleton for local proxied objects.
-  var proxiedObjectTable = new ProxiedObjectTable();
-
-  // DOM element serialization code.
-  var _localNextElementId = 0;
-  var _DART_ID = 'data-dart_id';
-  var _DART_TEMPORARY_ATTACHED = 'data-dart_temporary_attached';
-
-  function serializeElement(e) {
-    // TODO(vsm): Use an isolate-specific id.
-    var id;
-    if (e.hasAttribute(_DART_ID)) {
-      id = e.getAttribute(_DART_ID);
-    } else {
-      id = (_localNextElementId++).toString();
-      e.setAttribute(_DART_ID, id);
-    }
-    if (e !== document.documentElement) {
-      // Element must be attached to DOM to be retrieve in js part.
-      // Attach top unattached parent to avoid detaching parent of "e" when
-      // appending "e" directly to document. We keep count of elements
-      // temporarily attached to prevent detaching top unattached parent to
-      // early. This count is equals to the length of _DART_TEMPORARY_ATTACHED
-      // attribute. There could be other elements to serialize having the same
-      // top unattached parent.
-      var top = e;
-      while (true) {
-        if (top.hasAttribute(_DART_TEMPORARY_ATTACHED)) {
-          var oldValue = top.getAttribute(_DART_TEMPORARY_ATTACHED);
-          var newValue = oldValue + "a";
-          top.setAttribute(_DART_TEMPORARY_ATTACHED, newValue);
-          break;
-        }
-        if (top.parentNode == null) {
-          top.setAttribute(_DART_TEMPORARY_ATTACHED, "a");
-          document.documentElement.appendChild(top);
-          break;
-        }
-        if (top.parentNode === document.documentElement) {
-          // e was already attached to dom
-          break;
-        }
-        top = top.parentNode;
-      }
-    }
-    return id;
-  }
-
-  function deserializeElement(id) {
-    // TODO(vsm): Clear the attribute.
-    var list = document.querySelectorAll('[' + _DART_ID + '="' + id + '"]');
-
-    if (list.length > 1) throw 'Non unique ID: ' + id;
-    if (list.length == 0) {
-      throw 'Element must be attached to the document: ' + id;
-    }
-    var e = list[0];
-    if (e !== document.documentElement) {
-      // detach temporary attached element
-      var top = e;
-      while (true) {
-        if (top.hasAttribute(_DART_TEMPORARY_ATTACHED)) {
-          var oldValue = top.getAttribute(_DART_TEMPORARY_ATTACHED);
-          var newValue = oldValue.substring(1);
-          top.setAttribute(_DART_TEMPORARY_ATTACHED, newValue);
-          // detach top only if no more elements have to be unserialized
-          if (top.getAttribute(_DART_TEMPORARY_ATTACHED).length === 0) {
-            top.removeAttribute(_DART_TEMPORARY_ATTACHED);
-            document.documentElement.removeChild(top);
-          }
-          break;
-        }
-        if (top.parentNode === document.documentElement) {
-          // e was already attached to dom
-          break;
-        }
-        top = top.parentNode;
-      }
-    }
-    return e;
-  }
-
-
-  // Type for remote proxies to Dart objects.
-  function DartProxy(id, sendPort) {
-    this.id = id;
-    this.port = sendPort;
-  }
-
-  // Serializes JS types to SendPortSync format:
-  // - primitives -> primitives
-  // - sendport -> sendport
-  // - DOM element -> [ 'domref', element-id ]
-  // - Function -> [ 'funcref', function-id, sendport ]
-  // - Object -> [ 'objref', object-id, sendport ]
-  function serialize(message) {
-    if (message == null) {
-      return null;  // Convert undefined to null.
-    } else if (typeof(message) == 'string' ||
-               typeof(message) == 'number' ||
-               typeof(message) == 'boolean') {
-      // Primitives are passed directly through.
-      return message;
-    } else if (message instanceof SendPortSync) {
-      // Non-proxied objects are serialized.
-      return message;
-    } else if (message instanceof Element &&
-        (message.ownerDocument == null || message.ownerDocument == document)) {
-      return [ 'domref', serializeElement(message) ];
-    } else if (message instanceof BoundFunction &&
-               typeof(message.object) == 'function') {
-      // Local function proxy.
-      return [ 'funcref',
-               proxiedObjectTable.add(message),
-               proxiedObjectTable.sendPort ];
-    } else if (typeof(message) == 'function') {
-      if ('_dart_id' in message) {
-        // Remote function proxy.
-        var remoteId = message._dart_id;
-        var remoteSendPort = message._dart_port;
-        return [ 'funcref', remoteId, remoteSendPort ];
-      } else {
-        // Local function proxy.
-        return [ 'funcref',
-                 proxiedObjectTable.add(message),
-                 proxiedObjectTable.sendPort ];
-      }
-    } else if (message instanceof DartProxy) {
-      // Remote object proxy.
-      return [ 'objref', message.id, message.port ];
-    } else {
-      // Local object proxy.
-      return [ 'objref',
-               proxiedObjectTable.add(message),
-               proxiedObjectTable.sendPort ];
-    }
-  }
-
-  function deserialize(message) {
-    if (message == null) {
-      return null;  // Convert undefined to null.
-    } else if (typeof(message) == 'string' ||
-               typeof(message) == 'number' ||
-               typeof(message) == 'boolean') {
-      // Primitives are passed directly through.
-      return message;
-    } else if (message instanceof SendPortSync) {
-      // Serialized type.
-      return message;
-    }
-    var tag = message[0];
-    switch (tag) {
-      case 'funcref': return deserializeFunction(message);
-      case 'objref': return deserializeObject(message);
-      case 'domref': return deserializeElement(message[1]);
-    }
-    throw 'Unsupported serialized data: ' + message;
-  }
-
-  // Create a local function that forwards to the remote function.
-  function deserializeFunction(message) {
-    var id = message[1];
-    var port = message[2];
-    // TODO(vsm): Add a more robust check for a local SendPortSync.
-    if ("receivePort" in port) {
-      // Local function.
-      return unbind(proxiedObjectTable.get(id));
-    } else {
-      // Remote function.  Forward to its port.
-      var f = function () {
-        var depth = enterScope();
-        try {
-          var args = Array.prototype.slice.apply(arguments);
-          args.splice(0, 0, this);
-          args = args.map(serialize);
-          var result = port.callSync([id, '#call', args]);
-          if (result[0] == 'throws') throw deserialize(result[1]);
-          return deserialize(result[1]);
-        } finally {
-          exitScope(depth);
-        }
-      };
-      // Cache the remote id and port.
-      f._dart_id = id;
-      f._dart_port = port;
-      return f;
-    }
-  }
-
-  // Creates a DartProxy to forwards to the remote object.
-  function deserializeObject(message) {
-    var id = message[1];
-    var port = message[2];
-    // TODO(vsm): Add a more robust check for a local SendPortSync.
-    if ("receivePort" in port) {
-      // Local object.
-      return proxiedObjectTable.get(id);
-    } else {
-      // Remote object.
-      return new DartProxy(id, port);
-    }
-  }
-
-  // Remote handler to construct a new JavaScript object given its
-  // serialized constructor and arguments.
-  function construct(args) {
-    args = args.map(deserialize);
-    var constructor = unbind(args[0]);
-    args = Array.prototype.slice.call(args, 1);
-
-    // Until 10 args, the 'new' operator is used. With more arguments we use a
-    // generic way that may not work, particulary when the constructor does not
-    // have an "apply" method.
-    var ret = null;
-    if (args.length === 0) {
-      ret = new constructor();
-    } else if (args.length === 1) {
-      ret = new constructor(args[0]);
-    } else if (args.length === 2) {
-      ret = new constructor(args[0], args[1]);
-    } else if (args.length === 3) {
-      ret = new constructor(args[0], args[1], args[2]);
-    } else if (args.length === 4) {
-      ret = new constructor(args[0], args[1], args[2], args[3]);
-    } else if (args.length === 5) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4]);
-    } else if (args.length === 6) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4],
-                            args[5]);
-    } else if (args.length === 7) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4],
-                            args[5], args[6]);
-    } else if (args.length === 8) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4],
-                            args[5], args[6], args[7]);
-    } else if (args.length === 9) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4],
-                            args[5], args[6], args[7], args[8]);
-    } else if (args.length === 10) {
-      ret = new constructor(args[0], args[1], args[2], args[3], args[4],
-                            args[5], args[6], args[7], args[8], args[9]);
-    } else {
-      // Dummy Type with correct constructor.
-      var Type = function(){};
-      Type.prototype = constructor.prototype;
-  
-      // Create a new instance
-      var instance = new Type();
-  
-      // Call the original constructor.
-      ret = constructor.apply(instance, args);
-      ret = Object(ret) === ret ? ret : instance;
-    }
-    return serialize(ret);
-  }
-
-  // Remote handler to return the top-level JavaScript context.
-  function context(data) {
-    return serialize(globalContext);
-  }
-
-  // Remote handler to track number of live / allocated proxies.
-  function proxyCount() {
-    var live = proxiedObjectTable.count();
-    var total = proxiedObjectTable.total();
-    return [live, total];
-  }
-
-  // Return true if two JavaScript proxies are equal (==).
-  function proxyEquals(args) {
-    return deserialize(args[0]) == deserialize(args[1]);
-  }
-
-  // Return true if a JavaScript proxy is instance of a given type (instanceof).
-  function proxyInstanceof(args) {
-    var obj = unbind(deserialize(args[0]));
-    var type = unbind(deserialize(args[1]));
-    return obj instanceof type;
-  }
-
-  // Return true if a JavaScript proxy has a given property.
-  function proxyHasProperty(args) {
-    var obj = unbind(deserialize(args[0]));
-    var member = unbind(deserialize(args[1]));
-    return member in obj;
-  }
-
-  // Delete a given property of object.
-  function proxyDeleteProperty(args) {
-    var obj = unbind(deserialize(args[0]));
-    var member = unbind(deserialize(args[1]));
-    delete obj[member];
-  }
-
-  function proxyConvert(args) {
-    return serialize(deserializeDataTree(args));
-  }
-
-  function deserializeDataTree(data) {
-    var type = data[0];
-    var value = data[1];
-    if (type === 'map') {
-      var obj = {};
-      for (var i = 0; i < value.length; i++) {
-        obj[value[i][0]] = deserializeDataTree(value[i][1]);
-      }
-      return obj;
-    } else if (type === 'list') {
-      var list = [];
-      for (var i = 0; i < value.length; i++) {
-        list.push(deserializeDataTree(value[i]));
-      }
-      return list;
-    } else /* 'simple' */ {
-      return deserialize(value);
-    }
-  }
-
-  function makeGlobalPort(name, f) {
-    var port = new ReceivePortSync();
-    port.receive(f);
-    window.registerPort(name, port.toSendPort());
-  }
-
-  // Enters a new scope in the JavaScript context.
-  function enterJavaScriptScope() {
-    proxiedObjectTable.enterScope();
-  }
-
-  // Enters a new scope in both the JavaScript and Dart context.
-  var _dartEnterScopePort = null;
-  function enterScope() {
-    enterJavaScriptScope();
-    if (!_dartEnterScopePort) {
-      _dartEnterScopePort = window.lookupPort('js-dart-interop-enter-scope');
-    }
-    return _dartEnterScopePort.callSync([]);
-  }
-
-  // Exits the current scope (and invalidate local IDs) in the JavaScript
-  // context.
-  function exitJavaScriptScope() {
-    proxiedObjectTable.exitScope();
-  }
-
-  // Exits the current scope in both the JavaScript and Dart context.
-  var _dartExitScopePort = null;
-  function exitScope(depth) {
-    exitJavaScriptScope();
-    if (!_dartExitScopePort) {
-      _dartExitScopePort = window.lookupPort('js-dart-interop-exit-scope');
-    }
-    return _dartExitScopePort.callSync([ depth ]);
-  }
-
-  makeGlobalPort('dart-js-interop-context', context);
-  makeGlobalPort('dart-js-interop-create', construct);
-  makeGlobalPort('dart-js-interop-proxy-count', proxyCount);
-  makeGlobalPort('dart-js-interop-equals', proxyEquals);
-  makeGlobalPort('dart-js-interop-instanceof', proxyInstanceof);
-  makeGlobalPort('dart-js-interop-has-property', proxyHasProperty);
-  makeGlobalPort('dart-js-interop-delete-property', proxyDeleteProperty);
-  makeGlobalPort('dart-js-interop-convert', proxyConvert);
-  makeGlobalPort('dart-js-interop-enter-scope', enterJavaScriptScope);
-  makeGlobalPort('dart-js-interop-exit-scope', exitJavaScriptScope);
-  makeGlobalPort('dart-js-interop-globalize', function(data) {
-    if (data[0] == "objref" || data[0] == "funcref") return proxiedObjectTable.globalize(data[1]);
-    throw 'Illegal type: ' + data[0];
-  });
-  makeGlobalPort('dart-js-interop-invalidate', function(data) {
-    if (data[0] == "objref" || data[0] == "funcref") return proxiedObjectTable.invalidate(data[1]);
-    throw 'Illegal type: ' + data[0];
-  });
-})();