A local file-based Index implementation.

pkg/analysis_server/lib/src/index/index.dart

+// Copyright (c) 2014, 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 index;
+
+import 'dart:async';
+import 'dart:io';
+
+import 'package:analysis_server/src/index/store/codec.dart';
+import 'package:analysis_server/src/index/store/separate_file_manager.dart';
+import 'package:analysis_server/src/index/store/split_store.dart';
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/html.dart';
+import 'package:analyzer/src/generated/index.dart';
+import 'package:analyzer/src/generated/source.dart';
+
+
+/**
+ * An implementation of [Index] with [SplitIndexStore].
+ */
+class LocalSplitIndex extends Index {
+  SplitIndexStore _store;
+
+  LocalSplitIndex(Directory directory) {
+    var fileManager = new SeparateFileManager(directory);
+    var stringCodec = new StringCodec();
+    var nodeManager = new FileNodeManager(fileManager,
+        AnalysisEngine.instance.logger, stringCodec, new ContextCodec(),
+        new ElementCodec(stringCodec), new RelationshipCodec(stringCodec));
+    _store = new SplitIndexStore(nodeManager);
+  }
+
+  @override
+  String get statistics => _store.statistics;
+
+  @override
+  void clear() {
+    _store.clear();
+  }
+
+  @override
+  void getRelationships(Element element, Relationship relationship,
+      RelationshipCallback callback) {
+    // TODO(scheglov) update Index API to use asynchronous interface
+    callback.hasRelationships(element, relationship, Location.EMPTY_ARRAY);
+  }
+
+  /**
+   * Returns a `Future<List<Location>>` that completes with the list of
+   * [Location]s of the given [relationship] with the given [element].
+   *
+   * For example, if the [element] represents a function and the [relationship]
+   * is the `is-invoked-by` relationship, then the locations will be all of the
+   * places where the function is invoked.
+   */
+  Future<List<Location>> getRelationshipsAsync(Element element,
+      Relationship relationship) {
+    return _store.getRelationshipsAsync(element, relationship);
+  }
+
+  @override
+  void indexHtmlUnit(AnalysisContext context, HtmlUnit unit) {
+    if (unit == null) {
+      return;
+    }
+    if (unit.element == null) {
+      return;
+    }
+    new IndexHtmlUnitOperation(_store, context, unit).performOperation();
+  }
+
+  @override
+  void indexUnit(AnalysisContext context, CompilationUnit unit) {
+    if (unit == null) {
+      return;
+    }
+    if (unit.element == null) {
+      return;
+    }
+    new IndexUnitOperation(_store, context, unit).performOperation();
+  }
+
+  @override
+  void removeContext(AnalysisContext context) {
+    _store.removeContext(context);
+  }
+
+  @override
+  void removeSource(AnalysisContext context, Source source) {
+    _store.removeSource(context, source);
+  }
+
+  @override
+  void removeSources(AnalysisContext context, SourceContainer container) {
+    _store.removeSources(context, container);
+  }
+
+  @override
+  void run() {
+    // NO-OP if in the same isolate
+  }
+
+  @override
+  void stop() {
+    // NO-OP if in the same isolate
+  }
+}