| // 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. |
| |
| library analyzer_cli.src.bootloader; |
| |
| import 'dart:async'; |
| import 'dart:isolate'; |
| |
| import 'package:analyzer/file_system/physical_file_system.dart'; |
| import 'package:analyzer/source/analysis_options_provider.dart'; |
| import 'package:analyzer/src/context/context.dart'; |
| import 'package:analyzer/src/generated/engine.dart' as engine; |
| import 'package:analyzer/src/plugin/plugin_configuration.dart'; |
| import 'package:analyzer_cli/src/driver.dart'; |
| import 'package:analyzer_cli/src/options.dart'; |
| import 'package:source_span/source_span.dart'; |
| import 'package:yaml/src/yaml_node.dart'; |
| |
| const _analyzerPackageName = 'analyzer'; |
| |
| /// Return non-null if there is a validation issue with this plugin. |
| String validate(PluginInfo plugin) { |
| var missing = <String>[]; |
| if (plugin.className == null) { |
| missing.add('class name'); |
| } |
| if (plugin.libraryUri == null) { |
| missing.add('library uri'); |
| } |
| if (missing.isEmpty) { |
| // All good. |
| return null; |
| } |
| return 'Plugin ${plugin.name} skipped, config missing: ${missing.join(", ")}'; |
| } |
| |
| List<PluginInfo> _validate(Iterable<PluginInfo> plugins) { |
| List<PluginInfo> validated = <PluginInfo>[]; |
| plugins.forEach((PluginInfo plugin) { |
| String validation = validate(plugin); |
| if (validation != null) { |
| errorSink.writeln(validation); |
| } else { |
| validated.add(plugin); |
| } |
| }); |
| return validated; |
| } |
| |
| /// Source code assembler. |
| class Assembler { |
| /// Plugins to configure. |
| final Iterable<PluginInfo> plugins; |
| |
| /// Create an assembler for the given plugin [config]. |
| Assembler(this.plugins); |
| |
| /// A string enumerating required package `import`s. |
| String get enumerateImports => |
| plugins.map((PluginInfo p) => "import '${p.libraryUri}';").join('\n'); |
| |
| /// A string listing initialized plugin instances. |
| String get pluginList => |
| plugins.map((PluginInfo p) => 'new ${p.className}()').join(', '); |
| |
| /// Create a file containing a `main()` suitable for loading in spawned |
| /// isolate. |
| String createMain() => _generateMain(); |
| |
| String _generateMain() => """ |
| // 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. |
| |
| // This code was auto-generated, is not intended to be edited, and is subject to |
| // significant change. Please see the README file for more information. |
| |
| import 'package:analyzer_cli/src/driver.dart'; |
| |
| $enumerateImports |
| |
| void main(List<String> args) { |
| var starter = new Driver(); |
| starter.userDefinedPlugins = [$pluginList]; |
| starter.start(args); |
| } |
| """; |
| } |
| |
| /// Given environment information extracted from command-line `args`, creates a |
| /// a loadable analyzer "image". |
| class BootLoader { |
| /// Emits an error message to [errorSink] if plugin config can't be read. |
| static final ErrorHandler _pluginConfigErrorHandler = (Exception e) { |
| String details; |
| if (e is PluginConfigFormatException) { |
| details = e.message; |
| var node = e.yamlNode; |
| if (node is YamlNode) { |
| SourceLocation location = node.span.start; |
| details += ' (line ${location.line}, column ${location.column})'; |
| } |
| } else { |
| details = e.toString(); |
| } |
| |
| errorSink.writeln('Plugin configuration skipped: $details'); |
| }; |
| |
| /// Reads plugin config info from `.analysis_options`. |
| PluginConfigOptionsProcessor _pluginOptionsProcessor = |
| new PluginConfigOptionsProcessor(_pluginConfigErrorHandler); |
| |
| /// Create a loadable analyzer image configured with plugins derived from |
| /// the given analyzer command-line `args`. |
| Image createImage(List<String> args) { |
| // Parse commandline options. |
| CommandLineOptions options = CommandLineOptions.parse(args); |
| |
| // Process analysis options file (and notify all interested parties). |
| _processAnalysisOptions(options); |
| |
| // TODO(pquitslund): Pass in .packages info |
| return new Image(_pluginOptionsProcessor.config, |
| args: args, packageRootPath: options.packageRootPath); |
| } |
| |
| void _processAnalysisOptions(CommandLineOptions options) { |
| // Determine options file path. |
| var filePath = options.analysisOptionsFile ?? |
| engine.AnalysisEngine.ANALYSIS_OPTIONS_FILE; |
| try { |
| var file = PhysicalResourceProvider.INSTANCE.getFile(filePath); |
| AnalysisOptionsProvider analysisOptionsProvider = |
| new AnalysisOptionsProvider(); |
| Map<String, YamlNode> options = |
| analysisOptionsProvider.getOptionsFromFile(file); |
| //TODO(pq): thread in proper context. |
| var temporaryContext = new AnalysisContextImpl(); |
| _pluginOptionsProcessor.optionsProcessed(temporaryContext, options); |
| } on Exception catch (e) { |
| _pluginOptionsProcessor.onError(e); |
| } |
| } |
| } |
| |
| /// A loadable "image" of a a configured analyzer instance. |
| class Image { |
| /// (Optional) package root path. |
| final String packageRootPath; |
| |
| /// (Optional) package map. |
| final Map<String, Uri> packages; |
| |
| /// (Optional) args to be passed on to the loaded main. |
| final List<String> args; |
| |
| /// Plugin configuration. |
| final PluginConfig config; |
| |
| /// Create an image with the given [config] and optionally [packages], |
| /// [packageRootPath], and command line [args]. |
| Image(this.config, {this.packages, this.packageRootPath, this.args}); |
| |
| /// Load this image. |
| /// |
| /// Loading an image consists in assembling an analyzer `main()`, configured |
| /// to include the appropriate analyzer plugins as specified in |
| /// `.analyzer_options` which is then run in a spawned isolate. |
| Future load() { |
| List<PluginInfo> plugins = _validate(config.plugins); |
| String mainSource = new Assembler(plugins).createMain(); |
| |
| Completer completer = new Completer(); |
| ReceivePort exitListener = new ReceivePort(); |
| exitListener.listen((data) { |
| completer.complete(); |
| exitListener.close(); |
| }); |
| |
| Uri uri = |
| Uri.parse('data:application/dart;charset=utf-8,${Uri.encodeComponent( |
| mainSource)}'); |
| |
| // TODO(pquitslund): update once .packages are supported. |
| String packageRoot = |
| packageRootPath != null ? packageRootPath : './packages'; |
| Uri packageUri = new Uri.file(packageRoot); |
| |
| Isolate.spawnUri(uri, args, null /* msg */, |
| packageRoot: packageUri, onExit: exitListener.sendPort); |
| |
| return completer.future; |
| } |
| } |