Initial import of the Chrome Frame codebase. Integration in chrome.gyp coming...

chrome_frame/tools/test/reference_build/chrome/resources/inspector/splaytree.js

Index: chrome_frame/tools/test/reference_build/chrome/resources/inspector/splaytree.js
===================================================================
--- chrome_frame/tools/test/reference_build/chrome/resources/inspector/splaytree.js	(revision 0)
+++ chrome_frame/tools/test/reference_build/chrome/resources/inspector/splaytree.js	(revision 0)
@@ -0,0 +1,322 @@
+// Copyright 2009 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// A namespace stub. It will become more clear how to declare it properly
+// during integration of this script into Dev Tools.
+var goog = goog || {};
+goog.structs = goog.structs || {};
+
+
+/**
+ * Constructs a Splay tree.  A splay tree is a self-balancing binary
+ * search tree with the additional property that recently accessed
+ * elements are quick to access again. It performs basic operations
+ * such as insertion, look-up and removal in O(log(n)) amortized time.
+ *
+ * @constructor
+ */
+goog.structs.SplayTree = function() {
+};
+
+
+/**
+ * Pointer to the root node of the tree.
+ *
+ * @type {goog.structs.SplayTree.Node}
+ * @private
+ */
+goog.structs.SplayTree.prototype.root_ = null;
+
+
+/**
+ * @return {boolean} Whether the tree is empty.
+ */
+goog.structs.SplayTree.prototype.isEmpty = function() {
+  return !this.root_;
+};
+
+
+
+/**
+ * Inserts a node into the tree with the specified key and value if
+ * the tree does not already contain a node with the specified key. If
+ * the value is inserted, it becomes the root of the tree.
+ *
+ * @param {number} key Key to insert into the tree.
+ * @param {*} value Value to insert into the tree.
+ */
+goog.structs.SplayTree.prototype.insert = function(key, value) {
+  if (this.isEmpty()) {
+    this.root_ = new goog.structs.SplayTree.Node(key, value);
+    return;
+  }
+  // Splay on the key to move the last node on the search path for
+  // the key to the root of the tree.
+  this.splay_(key);
+  if (this.root_.key == key) {
+    return;
+  }
+  var node = new goog.structs.SplayTree.Node(key, value);
+  if (key > this.root_.key) {
+    node.left = this.root_;
+    node.right = this.root_.right;
+    this.root_.right = null;
+  } else {
+    node.right = this.root_;
+    node.left = this.root_.left;
+    this.root_.left = null;
+  }
+  this.root_ = node;
+};
+
+
+/**
+ * Removes a node with the specified key from the tree if the tree
+ * contains a node with this key. The removed node is returned. If the
+ * key is not found, an exception is thrown.
+ *
+ * @param {number} key Key to find and remove from the tree.
+ * @return {goog.structs.SplayTree.Node} The removed node.
+ */
+goog.structs.SplayTree.prototype.remove = function(key) {
+  if (this.isEmpty()) {
+    throw Error('Key not found: ' + key);
+  }
+  this.splay_(key);
+  if (this.root_.key != key) {
+    throw Error('Key not found: ' + key);
+  }
+  var removed = this.root_;
+  if (!this.root_.left) {
+    this.root_ = this.root_.right;
+  } else {
+    var right = this.root_.right;
+    this.root_ = this.root_.left;
+    // Splay to make sure that the new root has an empty right child.
+    this.splay_(key);
+    // Insert the original right child as the right child of the new
+    // root.
+    this.root_.right = right;
+  }
+  return removed;
+};
+
+
+/**
+ * Returns the node having the specified key or null if the tree doesn't contain
+ * a node with the specified key.
+ *
+ * @param {number} key Key to find in the tree.
+ * @return {goog.structs.SplayTree.Node} Node having the specified key.
+ */
+goog.structs.SplayTree.prototype.find = function(key) {
+  if (this.isEmpty()) {
+    return null;
+  }
+  this.splay_(key);
+  return this.root_.key == key ? this.root_ : null;
+};
+
+
+/**
+ * @return {goog.structs.SplayTree.Node} Node having the minimum key value.
+ */
+goog.structs.SplayTree.prototype.findMin = function() {
+  if (this.isEmpty()) {
+    return null;
+  }
+  var current = this.root_;
+  while (current.left) {
+    current = current.left;
+  }
+  return current;
+};
+
+
+/**
+ * @return {goog.structs.SplayTree.Node} Node having the maximum key value.
+ */
+goog.structs.SplayTree.prototype.findMax = function(opt_startNode) {
+  if (this.isEmpty()) {
+    return null;
+  }
+  var current = opt_startNode || this.root_;
+  while (current.right) {
+    current = current.right;
+  }
+  return current;
+};
+
+
+/**
+ * @return {goog.structs.SplayTree.Node} Node having the maximum key value that
+ *     is less or equal to the specified key value.
+ */
+goog.structs.SplayTree.prototype.findGreatestLessThan = function(key) {
+  if (this.isEmpty()) {
+    return null;
+  }
+  // Splay on the key to move the node with the given key or the last
+  // node on the search path to the top of the tree.
+  this.splay_(key);
+  // Now the result is either the root node or the greatest node in
+  // the left subtree.
+  if (this.root_.key <= key) {
+    return this.root_;
+  } else if (this.root_.left) {
+    return this.findMax(this.root_.left);
+  } else {
+    return null;
+  }
+};
+
+
+/**
+ * @return {Array<*>} An array containing all the values of tree's nodes.
+ */
+goog.structs.SplayTree.prototype.exportValues = function() {
+  var result = [];
+  this.traverse_(function(node) { result.push(node.value); });
+  return result;
+};
+
+
+/**
+ * Perform the splay operation for the given key. Moves the node with
+ * the given key to the top of the tree.  If no node has the given
+ * key, the last node on the search path is moved to the top of the
+ * tree. This is the simplified top-down splaying algorithm from:
+ * "Self-adjusting Binary Search Trees" by Sleator and Tarjan
+ *
+ * @param {number} key Key to splay the tree on.
+ * @private
+ */
+goog.structs.SplayTree.prototype.splay_ = function(key) {
+  if (this.isEmpty()) {
+    return;
+  }
+  // Create a dummy node.  The use of the dummy node is a bit
+  // counter-intuitive: The right child of the dummy node will hold
+  // the L tree of the algorithm.  The left child of the dummy node
+  // will hold the R tree of the algorithm.  Using a dummy node, left
+  // and right will always be nodes and we avoid special cases.
+  var dummy, left, right;
+  dummy = left = right = new goog.structs.SplayTree.Node(null, null);
+  var current = this.root_;
+  while (true) {
+    if (key < current.key) {
+      if (!current.left) {
+        break;
+      }
+      if (key < current.left.key) {
+        // Rotate right.
+        var tmp = current.left;
+        current.left = tmp.right;
+        tmp.right = current;
+        current = tmp;
+        if (!current.left) {
+          break;
+        }
+      }
+      // Link right.
+      right.left = current;
+      right = current;
+      current = current.left;
+    } else if (key > current.key) {
+      if (!current.right) {
+        break;
+      }
+      if (key > current.right.key) {
+        // Rotate left.
+        var tmp = current.right;
+        current.right = tmp.left;
+        tmp.left = current;
+        current = tmp;
+        if (!current.right) {
+          break;
+        }
+      }
+      // Link left.
+      left.right = current;
+      left = current;
+      current = current.right;
+    } else {
+      break;
+    }
+  }
+  // Assemble.
+  left.right = current.left;
+  right.left = current.right;
+  current.left = dummy.right;
+  current.right = dummy.left;
+  this.root_ = current;
+};
+
+
+/**
+ * Performs a preorder traversal of the tree.
+ *
+ * @param {function(goog.structs.SplayTree.Node)} f Visitor function.
+ * @private
+ */
+goog.structs.SplayTree.prototype.traverse_ = function(f) {
+  var nodesToVisit = [this.root_];
+  while (nodesToVisit.length > 0) {
+    var node = nodesToVisit.shift();
+    if (node == null) {
+      continue;
+    }
+    f(node);
+    nodesToVisit.push(node.left);
+    nodesToVisit.push(node.right);
+  }
+};
+
+
+/**
+ * Constructs a Splay tree node.
+ *
+ * @param {number} key Key.
+ * @param {*} value Value.
+ */
+goog.structs.SplayTree.Node = function(key, value) {
+  this.key = key;
+  this.value = value;
+};
+
+
+/**
+ * @type {goog.structs.SplayTree.Node}
+ */
+goog.structs.SplayTree.Node.prototype.left = null;
+
+
+/**
+ * @type {goog.structs.SplayTree.Node}
+ */
+goog.structs.SplayTree.Node.prototype.right = null;