| // Copyright (c) 2017, 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 fasta.compiler_context; |
| |
| import 'dart:async' show Zone, runZoned; |
| |
| import 'package:front_end/file_system.dart'; |
| import 'package:front_end/physical_file_system.dart'; |
| import 'package:kernel/ast.dart' show Source; |
| |
| import 'compiler_command_line.dart' show CompilerCommandLine; |
| |
| import 'colors.dart' show computeEnableColors; |
| |
| final Object compilerContextKey = new Object(); |
| |
| final CompilerContext rootContext = |
| new CompilerContext(CompilerCommandLine.forRootContext()); |
| |
| class CompilerContext { |
| final FileSystem fileSystem = PhysicalFileSystem.instance; |
| final CompilerCommandLine options; |
| |
| final Map<String, Source> uriToSource = <String, Source>{}; |
| |
| bool enableColorsCached = null; |
| |
| CompilerContext(this.options); |
| |
| void disableColors() { |
| enableColorsCached = false; |
| } |
| |
| static CompilerContext get current { |
| return Zone.current[compilerContextKey] ?? rootContext; |
| } |
| |
| /// Perform [action] in a [Zone] where [cl] will be available as |
| /// `CompilerContext.current.options`. |
| static dynamic withGlobalOptions( |
| CompilerCommandLine cl, dynamic action(CompilerContext c)) { |
| CompilerContext c = new CompilerContext(cl); |
| return runZoned(() => action(c), zoneValues: {compilerContextKey: c}); |
| } |
| |
| static bool get enableColors { |
| return current.enableColorsCached ??= computeEnableColors(current); |
| } |
| } |