Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/analyzer/lib/src/task/model.dart

+// Copyright (c) 2015, 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.
+
+library analyzer.src.task.model;
+
+import 'package:analyzer/src/generated/engine.dart' hide AnalysisTask;
+import 'package:analyzer/src/task/inputs.dart';
+import 'package:analyzer/task/model.dart';
+
+/**
+ * The default [ResultCachingPolicy], results are never flushed.
+ */
+const ResultCachingPolicy DEFAULT_CACHING_POLICY =
+    const SimpleResultCachingPolicy(-1, -1);
+
+/**
+ * A concrete implementation of a [ListResultDescriptor].
+ */
+class ListResultDescriptorImpl<E> extends ResultDescriptorImpl<List<E>>
+    implements ListResultDescriptor<E> {
+  /**
+   * Initialize a newly created analysis result to have the given [name] and
+   * [defaultValue]. If a [cachingPolicy] is provided, it will control how long
+   * values associated with this result will remain in the cache.
+   */
+  ListResultDescriptorImpl(String name, List<E> defaultValue,
+      {ResultCachingPolicy<List<E>> cachingPolicy: DEFAULT_CACHING_POLICY})
+      : super(name, defaultValue, cachingPolicy: cachingPolicy);
+
+  @override
+  ListTaskInput<E> of(AnalysisTarget target) =>
+      new ListTaskInputImpl<E>(target, this);
+}
+
+/**
+ * A concrete implementation of a [ResultDescriptor].
+ */
+class ResultDescriptorImpl<V> implements ResultDescriptor<V> {
+  static int _NEXT_HASH = 0;
+
+  @override
+  final hashCode = _NEXT_HASH++;
+
+  /**
+   * The name of the result, used for debugging.
+   */
+  final String name;
+
+  /**
+   * Return the default value for results described by this descriptor.
+   */
+  final V defaultValue;
+
+  /**
+   * The caching policy for results described by this descriptor.
+   */
+  final ResultCachingPolicy<V> cachingPolicy;
+
+  /**
+   * Initialize a newly created analysis result to have the given [name] and
+   * [defaultValue]. If a [cachingPolicy] is provided, it will control how long
+   * values associated with this result will remain in the cache.
+   */
+  ResultDescriptorImpl(this.name, this.defaultValue,
+      {this.cachingPolicy: DEFAULT_CACHING_POLICY});
+
+  @override
+  bool operator ==(Object other) {
+    return other is ResultDescriptorImpl && other.hashCode == hashCode;
+  }
+
+  @override
+  TaskInput<V> of(AnalysisTarget target) =>
+      new SimpleTaskInput<V>(target, this);
+
+  @override
+  String toString() => name;
+}
+
+/**
+ * A simple [ResultCachingPolicy] implementation that consider all the objects
+ * to be of the size `1`.
+ */
+class SimpleResultCachingPolicy<T> implements ResultCachingPolicy<T> {
+  @override
+  final int maxActiveSize;
+
+  @override
+  final int maxIdleSize;
+
+  const SimpleResultCachingPolicy(this.maxActiveSize, this.maxIdleSize);
+
+  @override
+  int measure(T object) => 1;
+}
+
+/**
+ * A concrete implementation of a [TaskDescriptor].
+ */
+class TaskDescriptorImpl implements TaskDescriptor {
+  /**
+   * The name of the described task, used for debugging.
+   */
+  final String name;
+
+  /**
+   * The function used to build the analysis task.
+   */
+  final BuildTask buildTask;
+
+  /**
+   * The function used to build the inputs to the task.
+   */
+  @override
+  final CreateTaskInputs createTaskInputs;
+
+  /**
+   * A list of the analysis results that will be computed by the described task.
+   */
+  @override
+  final List<ResultDescriptor> results;
+
+  /**
+   * Initialize a newly created task descriptor to have the given [name] and to
+   * describe a task that takes the inputs built using the given [createTaskInputs],
+   * and produces the given [results]. The [buildTask] will be used to create
+   * the instance of [AnalysisTask] thusly described.
+   */
+  TaskDescriptorImpl(
+      this.name, this.buildTask, this.createTaskInputs, this.results);
+
+  @override
+  AnalysisTask createTask(AnalysisContext context, AnalysisTarget target,
+      Map<String, dynamic> inputs) {
+    AnalysisTask task = buildTask(context, target);
+    task.inputs = inputs;
+    return task;
+  }
+
+  @override
+  String toString() => name;
+}