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

mojo/public/dart/third_party/yaml/lib/yaml.dart

+// 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.
+
+library yaml;
+
+import 'src/loader.dart';
+import 'src/style.dart';
+import 'src/yaml_document.dart';
+import 'src/yaml_exception.dart';
+import 'src/yaml_node.dart';
+
+export 'src/style.dart';
+export 'src/utils.dart' show YamlWarningCallback, yamlWarningCallback;
+export 'src/yaml_document.dart';
+export 'src/yaml_exception.dart';
+export 'src/yaml_node.dart' hide setSpan;
+
+/// Loads a single document from a YAML string.
+///
+/// If the string contains more than one document, this throws a
+/// [YamlException]. In future releases, this will become an [ArgumentError].
+///
+/// The return value is mostly normal Dart objects. However, since YAML mappings
+/// support some key types that the default Dart map implementation doesn't
+/// (NaN, lists, and maps), all maps in the returned document are [YamlMap]s.
+/// These have a few small behavioral differences from the default Map
+/// implementation; for details, see the [YamlMap] class.
+///
+/// In future versions, maps will instead be [HashMap]s with a custom equality
+/// operation.
+///
+/// If [sourceUrl] is passed, it's used as the URL from which the YAML
+/// originated for error reporting. It can be a [String], a [Uri], or `null`.
+loadYaml(String yaml, {sourceUrl}) =>
+    loadYamlNode(yaml, sourceUrl: sourceUrl).value;
+
+/// Loads a single document from a YAML string as a [YamlNode].
+///
+/// This is just like [loadYaml], except that where [loadYaml] would return a
+/// normal Dart value this returns a [YamlNode] instead. This allows the caller
+/// to be confident that the return value will always be a [YamlNode].
+YamlNode loadYamlNode(String yaml, {sourceUrl}) =>
+    loadYamlDocument(yaml, sourceUrl: sourceUrl).contents;
+
+/// Loads a single document from a YAML string as a [YamlDocument].
+///
+/// This is just like [loadYaml], except that where [loadYaml] would return a
+/// normal Dart value this returns a [YamlDocument] instead. This allows the
+/// caller to access document metadata.
+YamlDocument loadYamlDocument(String yaml, {sourceUrl}) {
+  var loader = new Loader(yaml, sourceUrl: sourceUrl);
+  var document = loader.load();
+  if (document == null) {
+    return new YamlDocument.internal(
+        new YamlScalar.internal(null, loader.span, ScalarStyle.ANY),
+        loader.span, null, const []);
+  }
+
+  var nextDocument = loader.load();
+  if (nextDocument != null) {
+    throw new YamlException("Only expected one document.", nextDocument.span);
+  }
+
+  return document;
+}
+
+/// Loads a stream of documents from a YAML string.
+///
+/// The return value is mostly normal Dart objects. However, since YAML mappings
+/// support some key types that the default Dart map implementation doesn't
+/// (NaN, lists, and maps), all maps in the returned document are [YamlMap]s.
+/// These have a few small behavioral differences from the default Map
+/// implementation; for details, see the [YamlMap] class.
+///
+/// In future versions, maps will instead be [HashMap]s with a custom equality
+/// operation.
+///
+/// If [sourceUrl] is passed, it's used as the URL from which the YAML
+/// originated for error reporting. It can be a [String], a [Uri], or `null`.
+YamlList loadYamlStream(String yaml, {sourceUrl}) {
+  var loader = new Loader(yaml, sourceUrl: sourceUrl);
+
+  var documents = [];
+  var document = loader.load();
+  while (document != null) {
+    documents.add(document);
+    document = loader.load();
+  }
+
+  return new YamlList.internal(
+      documents.map((document) => document.contents).toList(),
+      loader.span,
+      CollectionStyle.ANY);
+}
+
+/// Loads a stream of documents from a YAML string.
+///
+/// This is like [loadYamlStream], except that it returns [YamlDocument]s with
+/// metadata wrapping the document contents.
+List<YamlDocument> loadYamlDocuments(String yaml, {sourceUrl}) {
+  var loader = new Loader(yaml, sourceUrl: sourceUrl);
+
+  var documents = [];
+  var document = loader.load();
+  while (document != null) {
+    documents.add(document);
+    document = loader.load();
+  }
+
+  return documents;
+}