move polymer.dart into dart svn

pkg/polymer/test/testing.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.
+
+/** Common definitions used for setting up the test environment. */
+library testing;
+
+import 'dart:async';
+import 'dart:io';
+
+import 'package:csslib/visitor.dart';
+import 'package:html5lib/dom.dart';
+import 'package:html5lib/parser.dart';
+import 'package:polymer/src/analyzer.dart';
+import 'package:polymer/src/compiler.dart';
+import 'package:polymer/src/file_system.dart';
+import 'package:polymer/src/info.dart';
+import 'package:polymer/src/messages.dart';
+import 'package:polymer/src/compiler_options.dart';
+import 'package:polymer/src/files.dart';
+import 'package:polymer/src/utils.dart';
+
+
+Document parseDocument(String html) => parse(html);
+
+Element parseSubtree(String html) => parseFragment(html).nodes[0];
+
+FileInfo analyzeDefinitionsInTree(Document doc, Messages messages,
+    {String packageRoot: 'packages'}) {
+
+  return analyzeDefinitions(new GlobalInfo(), new UrlInfo('', '', null),
+      doc, packageRoot, messages);
+}
+
+/** Parses files in [fileContents], with [mainHtmlFile] being the main file. */
+List<SourceFile> parseFiles(Map<String, String> fileContents,
+    [String mainHtmlFile = 'index.html']) {
+
+  var result = <SourceFile>[];
+  fileContents.forEach((filename, contents) {
+    var src = new SourceFile(filename);
+    src.document = parse(contents);
+    result.add(src);
+  });
+
+  return result;
+}
+
+/** Analyze all files. */
+Map<String, FileInfo> analyzeFiles(List<SourceFile> files,
+    {Messages messages, String packageRoot: 'packages'}) {
+  messages = messages == null ? new Messages.silent() : messages;
+  var result = new Map<String, FileInfo>();
+
+  // analyze definitions
+  var global = new GlobalInfo();
+  for (var file in files) {
+    var path = file.path;
+    result[path] = analyzeDefinitions(global, new UrlInfo(path, path, null),
+        file.document, packageRoot, messages);
+  }
+
+  // analyze file contents
+  var uniqueIds = new IntIterator();
+  var pseudoElements = new Map();
+  for (var file in files) {
+    analyzeFile(file, result, uniqueIds, pseudoElements, messages, true);
+  }
+  return result;
+}
+
+Compiler createCompiler(Map files, Messages messages, {bool errors: false,
+    bool scopedCss: false}) {
+  List baseOptions = ['--no-colors', '-o', 'out', '--deploy', 'index.html'];
+  if (errors) baseOptions.insert(0, '--warnings_as_errors');
+  if (scopedCss) baseOptions.insert(0, '--scoped-css');
+  var options = CompilerOptions.parse(baseOptions);
+  var fs = new MockFileSystem(files);
+  return new Compiler(fs, options, messages);
+}
+
+String prettyPrintCss(StyleSheet styleSheet) =>
+    ((new CssPrinter())..visitTree(styleSheet)).toString();
+
+/**
+ * Abstraction around file system access to work in a variety of different
+ * environments.
+ */
+class MockFileSystem extends FileSystem {
+  final Map _files;
+  final Map readCount = {};
+
+  MockFileSystem(this._files);
+
+  Future readTextOrBytes(String filename) => readText(filename);
+
+  Future<String> readText(String path) {
+    readCount[path] = readCount.putIfAbsent(path, () => 0) + 1;
+    var file = _files[path];
+    if (file != null) {
+      return new Future.value(file);
+    } else {
+      return new Future.error(
+          new FileException('MockFileSystem: $path not found'));
+    }
+  }
+
+  // Compiler doesn't call these
+  void writeString(String outfile, String text) {}
+  Future flush() {}
+}