remove code-transformers from the repo

pkg/code_transformers/lib/src/dart_sdk.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 code_transformers.src.dart_sdk;
-
-import 'dart:convert' as convert;
-import 'dart:io' show File, Link, Platform, Process;
-import 'package:path/path.dart' as path;
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_io.dart';
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/sdk_io.dart' show DirectoryBasedDartSdk;
-import 'package:analyzer/src/generated/source.dart';
-
-
-/// Attempts to provide the current Dart SDK directory.
-///
-/// This will return null if the SDK cannot be found
-///
-/// Note that this may not be correct when executing outside of `pub`.
-String get dartSdkDirectory {
-
-  bool isSdkDir(String dirname) =>
-      new File(path.join(dirname, 'lib', '_internal', 'libraries.dart'))
-      .existsSync();
-
-  String executable = Platform.executable;
-  if (path.split(executable).length == 1) {
-    // TODO(blois): make this cross-platform.
-    // HACK: A single part, hope it's on the path.
-    executable = Process.runSync('which', ['dart'],
-        stdoutEncoding: convert.UTF8).stdout.trim();
-    // In case Dart is symlinked (e.g. homebrew on Mac) follow symbolic links.
-    var link = new Link(executable);
-    if (link.existsSync()) {
-      executable = link.resolveSymbolicLinksSync();
-    }
-    var sdkDir = path.dirname(path.dirname(executable));
-    if (isSdkDir(sdkDir)) return sdkDir;
-  }
-
-  var dartDir = path.dirname(path.absolute(executable));
-  // If there's a sub-dir named dart-sdk then we're most likely executing from
-  // a dart enlistment build directory.
-  if (isSdkDir(path.join(dartDir, 'dart-sdk'))) {
-    return path.join(dartDir, 'dart-sdk');
-  }
-  // If we can find libraries.dart then it's the root of the SDK.
-  if (isSdkDir(dartDir)) return dartDir;
-
-  var parts = path.split(dartDir);
-  // If the dart executable is within the sdk dir then get the root.
-  if (parts.contains('dart-sdk')) {
-    var dartSdkDir = path.joinAll(parts.take(parts.indexOf('dart-sdk') + 1));
-    if (isSdkDir(dartSdkDir)) return dartSdkDir;
-  }
-
-  return null;
-}
-
-/// Sources that are annotated with a source uri, so it is easy to resolve how
-/// to support `Resolver.getImportUri`.
-abstract class UriAnnotatedSource extends Source {
-  Uri get uri;
-}
-
-/// Dart SDK which wraps all Dart sources as [UriAnnotatedSource] to ensure they
-/// are tracked with Uris.
-class DirectoryBasedDartSdkProxy extends DirectoryBasedDartSdk {
-  DirectoryBasedDartSdkProxy(String sdkDirectory)
-      : super(new JavaFile(sdkDirectory));
-
-  Source mapDartUri(String dartUri) =>
-      DartSourceProxy.wrap(super.mapDartUri(dartUri), Uri.parse(dartUri));
-}
-
-/// Dart SDK resolver which wraps all Dart sources to ensure they are tracked
-/// with URIs.
-class DartUriResolverProxy implements DartUriResolver {
-  final DartUriResolver _proxy;
-  DartUriResolverProxy(DartSdk sdk) :
-      _proxy = new DartUriResolver(sdk);
-
-  Source resolveAbsolute(Uri uri) =>
-    DartSourceProxy.wrap(_proxy.resolveAbsolute(uri), uri);
-
-  DartSdk get dartSdk => _proxy.dartSdk;
-
-  Source fromEncoding(UriKind kind, Uri uri) =>
-      throw new UnsupportedError('fromEncoding is not supported');
-
-  Uri restoreAbsolute(Source source) =>
-      throw new UnsupportedError('restoreAbsolute is not supported');
-}
-
-/// Source file for dart: sources which track the sources with dart: URIs.
-///
-/// This is primarily to support [Resolver.getImportUri] for Dart SDK (dart:)
-/// based libraries.
-class DartSourceProxy implements UriAnnotatedSource {
-
-  /// Absolute URI which this source can be imported from
-  final Uri uri;
-
-  /// Underlying source object.
-  final Source _proxy;
-
-  DartSourceProxy(this._proxy, this.uri);
-
-  /// Ensures that [source] is a DartSourceProxy.
-  static DartSourceProxy wrap(Source source, Uri uri) {
-    if (source == null || source is DartSourceProxy) return source;
-    return new DartSourceProxy(source, uri);
-  }
-
-  // Note: to support both analyzer versions <0.22.0 and analyzer >=0.22.0, we
-  // implement both `resolveRelative` and `resolveRelativeUri`. Only one of them
-  // is available at a time in the analyzer package, so we use the `as dynamic`
-  // in these methods to hide warnings for the code that is missing. These APIs
-  // are invoked from the analyzer itself, so we don't expect them to cause
-  // failures.
-  Source resolveRelative(Uri relativeUri) {
-    // Assume that the type can be accessed via this URI, since these
-    // should only be parts for dart core files.
-    return wrap((_proxy as dynamic).resolveRelative(relativeUri), uri);
-  }
-
-  Uri resolveRelativeUri(Uri relativeUri) {
-    return (_proxy as dynamic).resolveRelativeUri(relativeUri);
-  }
-
-  bool exists() => _proxy.exists();
-
-  bool operator ==(Object other) =>
-    (other is DartSourceProxy && _proxy == other._proxy);
-
-  int get hashCode => _proxy.hashCode;
-
-  TimestampedData<String> get contents => _proxy.contents;
-
-  String get encoding => _proxy.encoding;
-
-  String get fullName => _proxy.fullName;
-
-  int get modificationStamp => _proxy.modificationStamp;
-
-  String get shortName => _proxy.shortName;
-
-  UriKind get uriKind => _proxy.uriKind;
-
-  bool get isInSystemLibrary => _proxy.isInSystemLibrary;
-}
-
-
-/// Dart SDK which contains a mock implementation of the SDK libraries. May be
-/// used to speed up resultion when most of the core libraries is not needed.
-class MockDartSdk implements DartSdk {
-  final Map<Uri, _MockSdkSource> _sources = {};
-  final bool reportMissing;
-  final Map<String, SdkLibrary> _libs = {};
-  final String sdkVersion = '0';
-  List<String> get uris => _sources.keys.map((uri) => '$uri').toList();
-  final AnalysisContext context = new SdkAnalysisContext();
-  DartUriResolver _resolver;
-  DartUriResolver get resolver => _resolver;
-
-  MockDartSdk(Map<String, String> sources, {this.reportMissing}) {
-    sources.forEach((uriString, contents) {
-      var uri = Uri.parse(uriString);
-      _sources[uri] = new _MockSdkSource(uri, contents);
-      _libs[uriString] = new SdkLibraryImpl(uri.path)
-        ..setDart2JsLibrary()
-        ..setVmLibrary();
-    });
-    _resolver = new DartUriResolver(this);
-    context.sourceFactory = new SourceFactory([_resolver]);
-  }
-
-  List<SdkLibrary> get sdkLibraries => _libs.values.toList();
-  SdkLibrary getSdkLibrary(String dartUri) => _libs[dartUri];
-  Source mapDartUri(String dartUri) => _getSource(Uri.parse(dartUri));
-
-  Source fromEncoding(UriKind kind, Uri uri) {
-    if (kind != UriKind.DART_URI) {
-      throw new UnsupportedError('expected dart: uri kind, got $kind.');
-    }
-    return _getSource(uri);
-  }
-
-  Source _getSource(Uri uri) {
-    var src = _sources[uri];
-    if (src == null) {
-      if (reportMissing) print('warning: missing mock for $uri.');
-      _sources[uri] = src =
-          new _MockSdkSource(uri, 'library dart.${uri.path};');
-    }
-    return src;
-  }
-
-  @override
-  Source fromFileUri(Uri uri) {
-    throw new UnsupportedError('MockDartSdk.fromFileUri');
-  }
-}
-
-class _MockSdkSource implements UriAnnotatedSource {
-  /// Absolute URI which this source can be imported from.
-  final Uri uri;
-  final String _contents;
-
-  _MockSdkSource(this.uri, this._contents);
-
-  bool exists() => true;
-
-  int get hashCode => uri.hashCode;
-
-  final int modificationStamp = 1;
-
-  TimestampedData<String> get contents =>
-      new TimestampedData(modificationStamp, _contents);
-
-  String get encoding => "${uriKind.encoding}$uri";
-
-  String get fullName => shortName;
-
-  String get shortName => uri.path;
-
-  UriKind get uriKind => UriKind.DART_URI;
-
-  bool get isInSystemLibrary => true;
-
-  Source resolveRelative(Uri relativeUri) =>
-      throw new UnsupportedError('not expecting relative urls in dart: mocks');
-
-  Uri resolveRelativeUri(Uri relativeUri) =>
-      throw new UnsupportedError('not expecting relative urls in dart: mocks');
-}