Library Dependencies Analysis service API.

pkg/analysis_server/lib/src/services/dependencies/library_dependencies.dart

Index: pkg/analysis_server/lib/src/services/dependencies/library_dependencies.dart
===================================================================
--- pkg/analysis_server/lib/src/services/dependencies/library_dependencies.dart	(revision 0)
+++ pkg/analysis_server/lib/src/services/dependencies/library_dependencies.dart	(revision 0)
@@ -0,0 +1,44 @@
+// 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.
+

[scheglov, 2015/01/22 20:14:20]

Add a library name.

[pquitslund, 2015/01/26 20:21:28]

Done.

+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/source.dart';
+
+
+class LibraryDependencyCollector {
+
+  final Set<LibraryElement> myVisitedLibraries = new Set<LibraryElement>();

[scheglov, 2015/01/22 20:14:20]

Strange name ;-)
Why not just "_visitedLibraries"?
And we could make it private.

[pquitslund, 2015/01/26 20:21:28]

Done.

+  final Set<String> _dependencies = new Set<String>();
+
+  final List<AnalysisContext> _contexts;
+
+  LibraryDependencyCollector(this._contexts);
+
+  Set<String> collectLibraryDependencies() {
+    _contexts.forEach(
+        (AnalysisContext context) =>
+            context.librarySources.forEach(
+                (Source source) => _addDependencies(context.getLibraryElement(source))));
+    return _dependencies;
+  }
+
+  void _addDependencies(LibraryElement libraryElement) {
+    if (libraryElement == null) {
+      return;
+    }
+    if (myVisitedLibraries.add(libraryElement)) {
+      for (CompilationUnitElement cu in libraryElement.units) {
+        final String path = cu.source.fullName;

[scheglov, 2015/01/22 20:14:20]

I don't think we need to make local variables private.

[pquitslund, 2015/01/26 20:21:28]

Done.

+        if (path != null) {
+          _dependencies.add(path);
+        }
+      }
+      libraryElement.imports.forEach(
+          (ImportElement import) => _addDependencies(import.importedLibrary));
+      libraryElement.exports.forEach(
+          (ExportElement export) => _addDependencies(export.exportedLibrary));
+    }
+  }
+}