analyzer_experimental checkpoint and AnalysisContext example.

pkg/analyzer_experimental/example/resolve_driver.dart

+#!/usr/bin/env dart
+
+// Copyright (c) 2013, 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.
+
+import 'package:analyzer_experimental/src/generated/java_io.dart';
+import 'package:analyzer_experimental/src/generated/source_io.dart';
+import 'package:analyzer_experimental/src/generated/ast.dart';
+import 'package:analyzer_experimental/src/generated/sdk.dart';
+import 'package:analyzer_experimental/src/generated/element.dart';
+import 'package:analyzer_experimental/src/generated/engine.dart';
+
+import 'dart:io';
+
+main() {
+  print('working dir ${new File('.').fullPathSync()}');
+
+  var args = new Options().arguments;
+  if (args.length != 2) {
+    print('Usage: resolve_driver [path_to_sdk] [file_to_resolve]');
+    exit(0);
+  }
+
+  JavaSystemIO.setProperty("com.google.dart.sdk", args[0]);
+  DartSdk sdk = DartSdk.defaultSdk;
+
+  AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
+  context.sourceFactory = new SourceFactory.con2([new DartUriResolver(sdk), new FileUriResolver()]);
+  Source source = new FileBasedSource.con1(context.sourceFactory, new JavaFile(args[1]));
+//  Source source = new FileBasedSource.con1(context.sourceFactory, new JavaFile("example/resolve_driver.dart"));
+  //
+  ChangeSet changeSet = new ChangeSet();
+  changeSet.added(source);
+  changeSet.changed(source);

[Brian Wilkerson, 2013/03/18 20:45:40]

You shouldn't need to mark a source as changed if you're just adding it (it's
assumed to be out of date if we've never seen it before).

[scheglov, 2013/03/18 20:50:49]

Done.

+  context.applyChanges(changeSet);
+  LibraryElement libElement = context.getLibraryElement(source);
+  print("libElement: $libElement");
+
+  CompilationUnit resolvedUnit = context.resolve(source, libElement);
+  var visitor = new _ASTVisitor();
+  resolvedUnit.accept(visitor);
+}
+
+class _ASTVisitor extends GeneralizingASTVisitor {
+  visitNode(ASTNode node) {
+    String text = '${node.runtimeType} : <"${node.toString()}">';
+    if (node is SimpleIdentifier) {
+      Element element = node.element;
+      if (element != null) {
+        text += " element: ${element.runtimeType}";
+        LibraryElement library = element.library;
+        if (library != null) {
+          text += " from ${element.library.definingCompilationUnit.source.fullName}";
+        }
+      }
+    }
+    print(text);
+    return super.visitNode(node);
+  }
+}
+