Adding float-no-zero branch hosted build

float-no-zero/closure-library/closure/goog/proto2/descriptor.js

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+// Copyright 2008 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Protocol Buffer (Message) Descriptor class.
+ */
+
+goog.provide('goog.proto2.Descriptor');
+goog.provide('goog.proto2.Metadata');
+
+goog.require('goog.array');
+goog.require('goog.object');
+goog.require('goog.proto2.Util');
+
+
+/**
+ * @typedef {{name: (string|undefined),
+ *            fullName: (string|undefined),
+ *            containingType: (goog.proto2.Message|undefined)}}
+ */
+goog.proto2.Metadata;
+
+
+
+/**
+ * A class which describes a Protocol Buffer 2 Message.
+ *
+ * @param {function(new:goog.proto2.Message)} messageType Constructor for
+ *      the message class that this descriptor describes.
+ * @param {!goog.proto2.Metadata} metadata The metadata about the message that
+ *      will be used to construct this descriptor.
+ * @param {Array.<!goog.proto2.FieldDescriptor>} fields The fields of the
+ *      message described by this descriptor.
+ *
+ * @constructor
+ */
+goog.proto2.Descriptor = function(messageType, metadata, fields) {
+
+  /**
+   * @type {function(new:goog.proto2.Message)}
+   * @private
+   */
+  this.messageType_ = messageType;
+
+  /**
+   * @type {?string}
+   * @private
+   */
+  this.name_ = metadata.name || null;
+
+  /**
+   * @type {?string}
+   * @private
+   */
+  this.fullName_ = metadata.fullName || null;
+
+  /**
+   * @type {goog.proto2.Message|undefined}
+   * @private
+   */
+  this.containingType_ = metadata.containingType;
+
+  /**
+   * The fields of the message described by this descriptor.
+   * @type {!Object.<number, !goog.proto2.FieldDescriptor>}
+   * @private
+   */
+  this.fields_ = {};
+
+  for (var i = 0; i < fields.length; i++) {
+    var field = fields[i];
+    this.fields_[field.getTag()] = field;
+  }
+};
+
+
+/**
+ * Returns the name of the message, if any.
+ *
+ * @return {?string} The name.
+ */
+goog.proto2.Descriptor.prototype.getName = function() {
+  return this.name_;
+};
+
+
+/**
+ * Returns the full name of the message, if any.
+ *
+ * @return {?string} The name.
+ */
+goog.proto2.Descriptor.prototype.getFullName = function() {
+  return this.fullName_;
+};
+
+
+/**
+ * Returns the descriptor of the containing message type or null if none.
+ *
+ * @return {goog.proto2.Descriptor} The descriptor.
+ */
+goog.proto2.Descriptor.prototype.getContainingType = function() {
+  if (!this.containingType_) {
+    return null;
+  }
+
+  return this.containingType_.getDescriptor();
+};
+
+
+/**
+ * Returns the fields in the message described by this descriptor ordered by
+ * tag.
+ *
+ * @return {!Array.<!goog.proto2.FieldDescriptor>} The array of field
+ *     descriptors.
+ */
+goog.proto2.Descriptor.prototype.getFields = function() {
+  /**
+   * @param {!goog.proto2.FieldDescriptor} fieldA First field.
+   * @param {!goog.proto2.FieldDescriptor} fieldB Second field.
+   * @return {number} Negative if fieldA's tag number is smaller, positive
+   *     if greater, zero if the same.
+   */
+  function tagComparator(fieldA, fieldB) {
+    return fieldA.getTag() - fieldB.getTag();
+  };
+
+  var fields = goog.object.getValues(this.fields_);
+  goog.array.sort(fields, tagComparator);
+
+  return fields;
+};
+
+
+/**
+ * Returns the fields in the message as a key/value map, where the key is
+ * the tag number of the field. DO NOT MODIFY THE RETURNED OBJECT. We return
+ * the actual, internal, fields map for performance reasons, and changing the
+ * map can result in undefined behavior of this library.
+ *
+ * @return {!Object.<number, !goog.proto2.FieldDescriptor>} The field map.
+ */
+goog.proto2.Descriptor.prototype.getFieldsMap = function() {
+  return this.fields_;
+};
+
+
+/**
+ * Returns the field matching the given name, if any. Note that
+ * this method searches over the *original* name of the field,
+ * not the camelCase version.
+ *
+ * @param {string} name The field name for which to search.
+ *
+ * @return {goog.proto2.FieldDescriptor} The field found, if any.
+ */
+goog.proto2.Descriptor.prototype.findFieldByName = function(name) {
+  var valueFound = goog.object.findValue(this.fields_,
+      function(field, key, obj) {
+        return field.getName() == name;
+      });
+
+  return /** @type {goog.proto2.FieldDescriptor} */ (valueFound) || null;
+};
+
+
+/**
+ * Returns the field matching the given tag number, if any.
+ *
+ * @param {number|string} tag The field tag number for which to search.
+ *
+ * @return {goog.proto2.FieldDescriptor} The field found, if any.
+ */
+goog.proto2.Descriptor.prototype.findFieldByTag = function(tag) {
+  goog.proto2.Util.assert(goog.string.isNumeric(tag));
+  return this.fields_[parseInt(tag, 10)] || null;
+};
+
+
+/**
+ * Creates an instance of the message type that this descriptor
+ * describes.
+ *
+ * @return {!goog.proto2.Message} The instance of the message.
+ */
+goog.proto2.Descriptor.prototype.createMessageInstance = function() {
+  return new this.messageType_;
+};