<!DOCTYPE html>
<!--
Copyright (c) 2015 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<link rel="import" href="/core/trace_model/attribute.html">

<script>
'use strict';

/**
 * @fileoverview Provides the MemoryAllocatorDump class.
 */
tv.exportTo('tv.c.trace_model', function() {
  /**
   * @constructor
   */
  function MemoryAllocatorDump(containerMemoryDump, fullName, opt_guid) {
    this.fullName = fullName;
    this.parent = undefined;
    this.children = [];
    this.attributes = {};

    // The associated container memory dump.
    this.containerMemoryDump = containerMemoryDump;

    // Ownership relationship between memory allocator dumps.
    this.owns = undefined;
    this.ownedBy = [];

    // Retention relationship between memory allocator dumps.
    this.retains = [];
    this.retainedBy = [];

    // For debugging purposes.
    this.guid = opt_guid;
  };

  MemoryAllocatorDump.prototype = {
    get name() {
      return this.fullName.substring(this.fullName.lastIndexOf('/') + 1);
    },

    addAttribute: function(name, value) {
      if (name in this.attributes)
        throw new Error('Duplicate attribute name: ' + name + '.');
      this.attributes[name] = value;
    },

    aggregateAttributes: function(opt_model) {
      var attributes = {};

      this.children.forEach(function(child) {
        child.aggregateAttributes(opt_model);
        tv.b.iterItems(child.attributes, function(name) {
          attributes[name] = true;
        }, this);
      }, this);

      tv.b.iterItems(attributes, function(name) {
        var childAttributes = this.children.map(function(child) {
          return child.attributes[name];
        }, this);
        var currentAttribute = this.attributes[name];
        this.attributes[name] = tv.c.trace_model.Attribute.aggregate(
            childAttributes, currentAttribute, opt_model);
      }, this);
    }
  };

  /**
   * @constructor
   */
  function MemoryAllocatorDumpLink(source, target, opt_importance) {
    this.source = source;
    this.target = target;
    this.importance = opt_importance;
  }

  return {
    MemoryAllocatorDump: MemoryAllocatorDump,
    MemoryAllocatorDumpLink: MemoryAllocatorDumpLink
  };
});
</script>