| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| library frontend_server; |
| |
| import 'dart:async'; |
| import 'dart:convert'; |
| import 'dart:io' hide FileSystemEntity; |
| |
| import 'package:args/args.dart'; |
| import 'package:dev_compiler/dev_compiler.dart' |
| show |
| DevCompilerTarget, |
| ExpressionCompiler, |
| parseModuleFormat, |
| ProgramCompiler; |
| |
| // front_end/src imports below that require lint `ignore_for_file` |
| // are a temporary state of things until frontend team builds better api |
| // that would replace api used below. This api was made private in |
| // an effort to discourage further use. |
| // ignore_for_file: implementation_imports |
| import 'package:front_end/src/api_unstable/vm.dart'; |
| import 'package:front_end/widget_cache.dart'; |
| import 'package:kernel/ast.dart' show Library, Procedure, LibraryDependency; |
| import 'package:kernel/binary/ast_to_binary.dart'; |
| import 'package:kernel/kernel.dart' |
| show Component, loadComponentSourceFromBytes; |
| import 'package:kernel/target/targets.dart' show targets, TargetFlags; |
| import 'package:package_config/package_config.dart'; |
| import 'package:path/path.dart' as path; |
| import 'package:usage/uuid/uuid.dart'; |
| |
| import 'package:vm/incremental_compiler.dart' show IncrementalCompiler; |
| import 'package:vm/kernel_front_end.dart'; |
| |
| import 'src/javascript_bundle.dart'; |
| import 'src/strong_components.dart'; |
| |
| ArgParser argParser = ArgParser(allowTrailingOptions: true) |
| ..addFlag('train', |
| help: 'Run through sample command line to produce snapshot', |
| negatable: false) |
| ..addFlag('incremental', |
| help: 'Run compiler in incremental mode', defaultsTo: false) |
| ..addOption('sdk-root', |
| help: 'Path to sdk root', |
| defaultsTo: '../../out/android_debug/flutter_patched_sdk') |
| ..addOption('platform', help: 'Platform kernel filename') |
| ..addFlag('aot', |
| help: 'Run compiler in AOT mode (enables whole-program transformations)', |
| defaultsTo: false) |
| ..addFlag('tfa', |
| help: |
| 'Enable global type flow analysis and related transformations in AOT mode.', |
| defaultsTo: false) |
| ..addFlag('tree-shake-write-only-fields', |
| help: 'Enable tree shaking of fields which are only written in AOT mode.', |
| defaultsTo: true) |
| ..addFlag('protobuf-tree-shaker-v2', |
| help: 'Enable protobuf tree shaker v2 in AOT mode.', defaultsTo: false) |
| ..addFlag('minimal-kernel', |
| help: 'Produce minimal tree-shaken kernel file.', defaultsTo: false) |
| ..addFlag('link-platform', |
| help: |
| 'When in batch mode, link platform kernel file into result kernel file.' |
| ' Intended use is to satisfy different loading strategies implemented' |
| ' by gen_snapshot(which needs platform embedded) vs' |
| ' Flutter engine(which does not)', |
| defaultsTo: true) |
| ..addOption('import-dill', |
| help: 'Import libraries from existing dill file', defaultsTo: null) |
| ..addOption('from-dill', |
| help: 'Read existing dill file instead of compiling from sources', |
| defaultsTo: null) |
| ..addOption('output-dill', |
| help: 'Output path for the generated dill', defaultsTo: null) |
| ..addOption('output-incremental-dill', |
| help: 'Output path for the generated incremental dill', defaultsTo: null) |
| ..addOption('depfile', |
| help: 'Path to output Ninja depfile. Only used in batch mode.') |
| ..addOption('packages', |
| help: '.packages file to use for compilation', defaultsTo: null) |
| ..addOption('target', |
| help: 'Target model that determines what core libraries are available', |
| allowed: <String>[ |
| 'vm', |
| 'flutter', |
| 'flutter_runner', |
| 'dart_runner', |
| 'dartdevc' |
| ], |
| defaultsTo: 'vm') |
| ..addMultiOption('filesystem-root', |
| help: 'File path that is used as a root in virtual filesystem used in' |
| ' compiled kernel files. When used --output-dill should be provided' |
| ' as well.', |
| hide: true) |
| ..addOption('filesystem-scheme', |
| help: |
| 'Scheme that is used in virtual filesystem set up via --filesystem-root' |
| ' option', |
| defaultsTo: 'org-dartlang-root', |
| hide: true) |
| ..addFlag('enable-http-uris', |
| defaultsTo: false, hide: true, help: 'Enables support for http uris.') |
| ..addFlag('verbose', help: 'Enables verbose output from the compiler.') |
| ..addOption('initialize-from-dill', |
| help: 'Normally the output dill is used to specify which dill to ' |
| 'initialize from, but it can be overwritten here.', |
| defaultsTo: null, |
| hide: true) |
| ..addMultiOption('define', |
| abbr: 'D', |
| help: 'The values for the environment constants (e.g. -Dkey=value).', |
| splitCommas: false) |
| ..addFlag('embed-source-text', |
| help: 'Includes sources into generated dill file. Having sources' |
| ' allows to effectively use observatory to debug produced' |
| ' application, produces better stack traces on exceptions.', |
| defaultsTo: true) |
| ..addFlag('unsafe-package-serialization', |
| help: '*Deprecated* ' |
| 'Potentially unsafe: Does not allow for invalidating packages, ' |
| 'additionally the output dill file might include more libraries than ' |
| 'needed. The use case is test-runs, where invalidation is not really ' |
| 'used, and where dill filesize does not matter, and the gain is ' |
| 'improved speed.', |
| defaultsTo: false, |
| hide: true) |
| ..addFlag('incremental-serialization', |
| help: 'Re-use previously serialized data when serializing. ' |
| 'The output dill file might include more libraries than strictly ' |
| 'needed, but the serialization phase will generally be much faster.', |
| defaultsTo: true, |
| negatable: true, |
| hide: true) |
| ..addFlag('track-widget-creation', |
| help: 'Run a kernel transformer to track creation locations for widgets.', |
| defaultsTo: false) |
| ..addMultiOption( |
| 'delete-tostring-package-uri', |
| help: 'Replaces implementations of `toString` with `super.toString()` for ' |
| 'specified package', |
| valueHelp: 'dart:ui', |
| defaultsTo: const <String>[], |
| ) |
| ..addFlag('enable-asserts', |
| help: 'Whether asserts will be enabled.', defaultsTo: false) |
| ..addFlag('sound-null-safety', |
| help: 'Respect the nullability of types at runtime.', defaultsTo: null) |
| ..addMultiOption('enable-experiment', |
| help: 'Comma separated list of experimental features, eg set-literals.', |
| hide: true) |
| ..addFlag('split-output-by-packages', |
| help: |
| 'Split resulting kernel file into multiple files (one per package).', |
| defaultsTo: false) |
| ..addOption('component-name', help: 'Name of the Fuchsia component') |
| ..addOption('data-dir', |
| help: 'Name of the subdirectory of //data for output files') |
| ..addOption('far-manifest', help: 'Path to output Fuchsia package manifest') |
| ..addOption('libraries-spec', |
| help: 'A path or uri to the libraries specification JSON file') |
| ..addFlag('debugger-module-names', |
| help: 'Use debugger-friendly modules names', defaultsTo: true) |
| ..addFlag('experimental-emit-debug-metadata', |
| help: 'Emit module and library metadata for the debugger', |
| defaultsTo: false) |
| ..addFlag('emit-debug-symbols', |
| help: 'Emit debug symbols for the debugger', defaultsTo: false) |
| ..addOption('dartdevc-module-format', |
| help: 'The module format to use on for the dartdevc compiler', |
| defaultsTo: 'amd') |
| ..addFlag('flutter-widget-cache', |
| help: 'Enable the widget cache to track changes to Widget subtypes', |
| defaultsTo: false) |
| ..addFlag('print-incremental-dependencies', |
| help: 'Print list of sources added and removed from compilation', |
| defaultsTo: true); |
| |
| String usage = ''' |
| Usage: server [options] [input.dart] |
| |
| If filename or uri pointing to the entrypoint is provided on the command line, |
| then the server compiles it, generates dill file and exits. |
| If no entrypoint is provided on the command line, server waits for |
| instructions from stdin. |
| |
| Instructions: |
| - compile <input.dart> |
| - recompile [<input.dart>] <boundary-key> |
| <invalidated file uri> |
| <invalidated file uri> |
| ... |
| <boundary-key> |
| - accept |
| - quit |
| |
| Output: |
| - result <boundary-key> |
| <compiler output> |
| <boundary-key> [<output.dill>] |
| |
| Options: |
| ${argParser.usage} |
| '''; |
| |
| enum _State { |
| READY_FOR_INSTRUCTION, |
| RECOMPILE_LIST, |
| // compileExpression |
| COMPILE_EXPRESSION_EXPRESSION, |
| COMPILE_EXPRESSION_DEFS, |
| COMPILE_EXPRESSION_TYPEDEFS, |
| COMPILE_EXPRESSION_LIBRARY_URI, |
| COMPILE_EXPRESSION_KLASS, |
| COMPILE_EXPRESSION_IS_STATIC, |
| // compileExpressionToJs |
| COMPILE_EXPRESSION_TO_JS_LIBRARYURI, |
| COMPILE_EXPRESSION_TO_JS_LINE, |
| COMPILE_EXPRESSION_TO_JS_COLUMN, |
| COMPILE_EXPRESSION_TO_JS_JSMODULUES, |
| COMPILE_EXPRESSION_TO_JS_JSFRAMEVALUES, |
| COMPILE_EXPRESSION_TO_JS_MODULENAME, |
| COMPILE_EXPRESSION_TO_JS_EXPRESSION, |
| } |
| |
| /// Actions that every compiler should implement. |
| abstract class CompilerInterface { |
| /// Compile given Dart program identified by `entryPoint` with given list of |
| /// `options`. When `generator` parameter is omitted, new instance of |
| /// `IncrementalKernelGenerator` is created by this method. Main use for this |
| /// parameter is for mocking in tests. |
| /// Returns [true] if compilation was successful and produced no errors. |
| Future<bool> compile( |
| String entryPoint, |
| ArgResults options, { |
| IncrementalCompiler generator, |
| }); |
| |
| /// Assuming some Dart program was previously compiled, recompile it again |
| /// taking into account some changed(invalidated) sources. |
| Future<Null> recompileDelta({String entryPoint}); |
| |
| /// Accept results of previous compilation so that next recompilation cycle |
| /// won't recompile sources that were previously reported as changed. |
| void acceptLastDelta(); |
| |
| /// Rejects results of previous compilation and sets compiler back to last |
| /// accepted state. |
| Future<void> rejectLastDelta(); |
| |
| /// This let's compiler know that source file identifed by `uri` was changed. |
| void invalidate(Uri uri); |
| |
| /// Resets incremental compiler accept/reject status so that next time |
| /// recompile is requested, complete kernel file is produced. |
| void resetIncrementalCompiler(); |
| |
| /// Compiles [expression] with free variables listed in [definitions], |
| /// free type variables listed in [typedDefinitions]. "Free" means their |
| /// values are through evaluation API call, rather than coming from running |
| /// application. |
| /// If [klass] is not [null], expression is compiled in context of [klass] |
| /// class. |
| /// If [klass] is [null],expression is compiled at top-level of |
| /// [libraryUrl] library. If [klass] is not [null], [isStatic] determines |
| /// whether expression can refer to [this] or not. |
| Future<Null> compileExpression( |
| String expression, |
| List<String> definitions, |
| List<String> typeDefinitions, |
| String libraryUri, |
| String klass, |
| bool isStatic); |
| |
| /// Compiles [expression] in [libraryUri] at [line]:[column] to JavaScript |
| /// in [moduleName]. |
| /// |
| /// Values listed in [jsFrameValues] are substituted for their names in the |
| /// [expression]. |
| /// |
| /// Ensures that all [jsModules] are loaded and accessible inside the |
| /// expression. |
| /// |
| /// Example values of parameters: |
| /// [moduleName] is of the form '/packages/hello_world_main.dart' |
| /// [jsFrameValues] is a map from js variable name to its primitive value |
| /// or another variable name, for example |
| /// { 'x': '1', 'y': 'y', 'o': 'null' } |
| /// [jsModules] is a map from variable name to the module name, where |
| /// variable name is the name originally used in JavaScript to contain the |
| /// module object, for example: |
| /// { 'dart':'dart_sdk', 'main': '/packages/hello_world_main.dart' } |
| Future<Null> compileExpressionToJs( |
| String libraryUri, |
| int line, |
| int column, |
| Map<String, String> jsModules, |
| Map<String, String> jsFrameValues, |
| String moduleName, |
| String expression); |
| |
| /// Communicates an error [msg] to the client. |
| void reportError(String msg); |
| } |
| |
| abstract class ProgramTransformer { |
| void transform(Component component); |
| } |
| |
| /// Class that for test mocking purposes encapsulates creation of [BinaryPrinter]. |
| class BinaryPrinterFactory { |
| /// Creates new [BinaryPrinter] to write to [targetSink]. |
| BinaryPrinter newBinaryPrinter(Sink<List<int>> targetSink) { |
| return BinaryPrinter(targetSink); |
| } |
| } |
| |
| class FrontendCompiler implements CompilerInterface { |
| FrontendCompiler(this._outputStream, |
| {this.printerFactory, |
| this.transformer, |
| this.unsafePackageSerialization, |
| this.incrementalSerialization: true, |
| this.useDebuggerModuleNames: false, |
| this.emitDebugMetadata: false, |
| this.emitDebugSymbols: false}) { |
| _outputStream ??= stdout; |
| printerFactory ??= new BinaryPrinterFactory(); |
| } |
| |
| StringSink _outputStream; |
| BinaryPrinterFactory printerFactory; |
| bool unsafePackageSerialization; |
| bool incrementalSerialization; |
| bool useDebuggerModuleNames; |
| bool emitDebugMetadata; |
| bool emitDebugSymbols; |
| bool _printIncrementalDependencies; |
| |
| CompilerOptions _compilerOptions; |
| ProcessedOptions _processedOptions; |
| FileSystem _fileSystem; |
| Uri _mainSource; |
| ArgResults _options; |
| |
| IncrementalCompiler _generator; |
| JavaScriptBundler _bundler; |
| |
| WidgetCache _widgetCache; |
| |
| String _kernelBinaryFilename; |
| String _kernelBinaryFilenameIncremental; |
| String _kernelBinaryFilenameFull; |
| String _initializeFromDill; |
| |
| Set<Uri> previouslyReportedDependencies = Set<Uri>(); |
| |
| final ProgramTransformer transformer; |
| |
| final List<String> errors = <String>[]; |
| |
| _onDiagnostic(DiagnosticMessage message) { |
| // TODO(https://dartbug.com/44867): The frontend server should take a |
| // verbosity argument and put that in CompilerOptions and use it here. |
| bool printMessage; |
| switch (message.severity) { |
| case Severity.error: |
| case Severity.internalProblem: |
| printMessage = true; |
| errors.addAll(message.plainTextFormatted); |
| break; |
| case Severity.warning: |
| printMessage = true; |
| break; |
| case Severity.info: |
| printMessage = false; |
| break; |
| case Severity.context: |
| case Severity.ignored: |
| throw 'Unexpected severity: ${message.severity}'; |
| } |
| if (printMessage) { |
| printDiagnosticMessage(message, _outputStream.writeln); |
| } |
| } |
| |
| void _installDartdevcTarget() { |
| targets['dartdevc'] = (TargetFlags flags) => DevCompilerTarget(flags); |
| } |
| |
| @override |
| Future<bool> compile( |
| String entryPoint, |
| ArgResults options, { |
| IncrementalCompiler generator, |
| }) async { |
| _options = options; |
| _fileSystem = createFrontEndFileSystem( |
| options['filesystem-scheme'], options['filesystem-root'], |
| allowHttp: options['enable-http-uris']); |
| _mainSource = resolveInputUri(entryPoint); |
| _kernelBinaryFilenameFull = _options['output-dill'] ?? '$entryPoint.dill'; |
| _kernelBinaryFilenameIncremental = _options['output-incremental-dill'] ?? |
| (_options['output-dill'] != null |
| ? '${_options['output-dill']}.incremental.dill' |
| : '$entryPoint.incremental.dill'); |
| _kernelBinaryFilename = _kernelBinaryFilenameFull; |
| _initializeFromDill = |
| _options['initialize-from-dill'] ?? _kernelBinaryFilenameFull; |
| _printIncrementalDependencies = _options['print-incremental-dependencies']; |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| final Uri sdkRoot = _ensureFolderPath(options['sdk-root']); |
| final String platformKernelDill = |
| options['platform'] ?? 'platform_strong.dill'; |
| final String packagesOption = _options['packages']; |
| final bool nullSafety = _options['sound-null-safety']; |
| final CompilerOptions compilerOptions = CompilerOptions() |
| ..sdkRoot = sdkRoot |
| ..fileSystem = _fileSystem |
| ..packagesFileUri = |
| packagesOption != null ? resolveInputUri(packagesOption) : null |
| ..sdkSummary = sdkRoot.resolve(platformKernelDill) |
| ..verbose = options['verbose'] |
| ..embedSourceText = options['embed-source-text'] |
| ..explicitExperimentalFlags = parseExperimentalFlags( |
| parseExperimentalArguments(options['enable-experiment']), |
| onError: (msg) => errors.add(msg)) |
| ..nnbdMode = (nullSafety == true) ? NnbdMode.Strong : NnbdMode.Weak |
| ..onDiagnostic = _onDiagnostic; |
| |
| if (options.wasParsed('libraries-spec')) { |
| compilerOptions.librariesSpecificationUri = |
| resolveInputUri(options['libraries-spec']); |
| } |
| |
| if (options.wasParsed('filesystem-root')) { |
| if (_options['output-dill'] == null) { |
| print('When --filesystem-root is specified it is required to specify' |
| ' --output-dill option that points to physical file system location' |
| ' of a target dill file.'); |
| return false; |
| } |
| } |
| |
| final Map<String, String> environmentDefines = {}; |
| if (!parseCommandLineDefines( |
| options['define'], environmentDefines, usage)) { |
| return false; |
| } |
| |
| if (options['aot']) { |
| if (!options['link-platform']) { |
| print('Error: --no-link-platform option cannot be used with --aot'); |
| return false; |
| } |
| if (options['split-output-by-packages']) { |
| print( |
| 'Error: --split-output-by-packages option cannot be used with --aot'); |
| return false; |
| } |
| if (options['incremental']) { |
| print('Error: --incremental option cannot be used with --aot'); |
| return false; |
| } |
| if (options['import-dill'] != null) { |
| print('Error: --import-dill option cannot be used with --aot'); |
| return false; |
| } |
| } |
| |
| if (options['incremental']) { |
| if (options['from-dill'] != null) { |
| print('Error: --from-dill option cannot be used with --incremental'); |
| return false; |
| } |
| } |
| |
| if (nullSafety == null && |
| compilerOptions.isExperimentEnabled(ExperimentalFlag.nonNullable)) { |
| await autoDetectNullSafetyMode(_mainSource, compilerOptions); |
| } |
| |
| // Initialize additional supported kernel targets. |
| _installDartdevcTarget(); |
| compilerOptions.target = createFrontEndTarget( |
| options['target'], |
| trackWidgetCreation: options['track-widget-creation'], |
| nullSafety: compilerOptions.nnbdMode == NnbdMode.Strong, |
| ); |
| if (compilerOptions.target == null) { |
| print('Failed to create front-end target ${options['target']}.'); |
| return false; |
| } |
| |
| final String importDill = options['import-dill']; |
| if (importDill != null) { |
| compilerOptions.additionalDills = <Uri>[ |
| Uri.base.resolveUri(Uri.file(importDill)) |
| ]; |
| } |
| |
| _compilerOptions = compilerOptions; |
| _processedOptions = ProcessedOptions(options: compilerOptions); |
| |
| KernelCompilationResults results; |
| IncrementalSerializer incrementalSerializer; |
| if (options['incremental']) { |
| _compilerOptions.environmentDefines = |
| _compilerOptions.target.updateEnvironmentDefines(environmentDefines); |
| |
| _compilerOptions.omitPlatform = false; |
| _generator = generator ?? _createGenerator(Uri.file(_initializeFromDill)); |
| await invalidateIfInitializingFromDill(); |
| Component component = |
| await _runWithPrintRedirection(() => _generator.compile()); |
| results = KernelCompilationResults( |
| component, |
| const {}, |
| _generator.getClassHierarchy(), |
| _generator.getCoreTypes(), |
| component.uriToSource.keys); |
| |
| incrementalSerializer = _generator.incrementalSerializer; |
| if (options['flutter-widget-cache']) { |
| _widgetCache = WidgetCache(component); |
| } |
| } else { |
| if (options['link-platform']) { |
| // TODO(aam): Remove linkedDependencies once platform is directly embedded |
| // into VM snapshot and http://dartbug.com/30111 is fixed. |
| compilerOptions.additionalDills = <Uri>[ |
| sdkRoot.resolve(platformKernelDill) |
| ]; |
| } |
| results = await _runWithPrintRedirection(() => compileToKernel( |
| _mainSource, compilerOptions, |
| includePlatform: options['link-platform'], |
| deleteToStringPackageUris: options['delete-tostring-package-uri'], |
| aot: options['aot'], |
| useGlobalTypeFlowAnalysis: options['tfa'], |
| environmentDefines: environmentDefines, |
| enableAsserts: options['enable-asserts'], |
| useProtobufTreeShakerV2: options['protobuf-tree-shaker-v2'], |
| minimalKernel: options['minimal-kernel'], |
| treeShakeWriteOnlyFields: options['tree-shake-write-only-fields'], |
| fromDillFile: options['from-dill'])); |
| } |
| if (results.component != null) { |
| transformer?.transform(results.component); |
| |
| if (_compilerOptions.target.name == 'dartdevc') { |
| await writeJavascriptBundle(results, _kernelBinaryFilename, |
| options['filesystem-scheme'], options['dartdevc-module-format']); |
| } |
| await writeDillFile(results, _kernelBinaryFilename, |
| filterExternal: importDill != null || options['minimal-kernel'], |
| incrementalSerializer: incrementalSerializer); |
| |
| _outputStream.writeln(boundaryKey); |
| await _outputDependenciesDelta(results.compiledSources); |
| _outputStream |
| .writeln('$boundaryKey $_kernelBinaryFilename ${errors.length}'); |
| final String depfile = options['depfile']; |
| if (depfile != null) { |
| await writeDepfile(compilerOptions.fileSystem, results.compiledSources, |
| _kernelBinaryFilename, depfile); |
| } |
| |
| _kernelBinaryFilename = _kernelBinaryFilenameIncremental; |
| } else { |
| _outputStream.writeln(boundaryKey); |
| } |
| results = null; // Fix leak: Probably variation of http://dartbug.com/36983. |
| return errors.isEmpty; |
| } |
| |
| void _outputDependenciesDelta(Iterable<Uri> compiledSources) async { |
| if (!_printIncrementalDependencies) { |
| return; |
| } |
| Set<Uri> uris = Set<Uri>(); |
| for (Uri uri in compiledSources) { |
| // Skip empty or corelib dependencies. |
| if (uri == null || uri.scheme == 'org-dartlang-sdk') continue; |
| uris.add(uri); |
| } |
| for (Uri uri in uris) { |
| if (previouslyReportedDependencies.contains(uri)) { |
| continue; |
| } |
| try { |
| _outputStream.writeln('+${await asFileUri(_fileSystem, uri)}'); |
| } on FileSystemException { |
| // Ignore errors from invalid import uris. |
| } |
| } |
| for (Uri uri in previouslyReportedDependencies) { |
| if (uris.contains(uri)) { |
| continue; |
| } |
| try { |
| _outputStream.writeln('-${await asFileUri(_fileSystem, uri)}'); |
| } on FileSystemException { |
| // Ignore errors from invalid import uris. |
| } |
| } |
| previouslyReportedDependencies = uris; |
| } |
| |
| /// Write a JavaScript bundle containg the provided component. |
| Future<void> writeJavascriptBundle(KernelCompilationResults results, |
| String filename, String fileSystemScheme, String moduleFormat) async { |
| var packageConfig = await loadPackageConfigUri( |
| _compilerOptions.packagesFileUri ?? File('.packages').absolute.uri); |
| var soundNullSafety = _compilerOptions.nnbdMode == NnbdMode.Strong; |
| final Component component = results.component; |
| // Compute strongly connected components. |
| final strongComponents = StrongComponents(component, |
| results.loadedLibraries, _mainSource, _compilerOptions.fileSystem); |
| await strongComponents.computeModules(); |
| |
| // Create JavaScript bundler. |
| final File sourceFile = File('$filename.sources'); |
| final File manifestFile = File('$filename.json'); |
| final File sourceMapsFile = File('$filename.map'); |
| final File metadataFile = File('$filename.metadata'); |
| final File symbolsFile = File('$filename.symbols'); |
| if (!sourceFile.parent.existsSync()) { |
| sourceFile.parent.createSync(recursive: true); |
| } |
| _bundler = JavaScriptBundler( |
| component, strongComponents, fileSystemScheme, packageConfig, |
| useDebuggerModuleNames: useDebuggerModuleNames, |
| emitDebugMetadata: emitDebugMetadata, |
| emitDebugSymbols: emitDebugSymbols, |
| moduleFormat: moduleFormat, |
| soundNullSafety: soundNullSafety); |
| final sourceFileSink = sourceFile.openWrite(); |
| final manifestFileSink = manifestFile.openWrite(); |
| final sourceMapsFileSink = sourceMapsFile.openWrite(); |
| final metadataFileSink = |
| emitDebugMetadata ? metadataFile.openWrite() : null; |
| final symbolsFileSink = emitDebugSymbols ? symbolsFile.openWrite() : null; |
| final kernel2JsCompilers = await _bundler.compile( |
| results.classHierarchy, |
| results.coreTypes, |
| results.loadedLibraries, |
| sourceFileSink, |
| manifestFileSink, |
| sourceMapsFileSink, |
| metadataFileSink, |
| symbolsFileSink); |
| cachedProgramCompilers.addAll(kernel2JsCompilers); |
| await Future.wait([ |
| sourceFileSink.close(), |
| manifestFileSink.close(), |
| sourceMapsFileSink.close(), |
| if (metadataFileSink != null) metadataFileSink.close(), |
| if (symbolsFileSink != null) symbolsFileSink.close(), |
| ]); |
| } |
| |
| writeDillFile(KernelCompilationResults results, String filename, |
| {bool filterExternal: false, |
| IncrementalSerializer incrementalSerializer}) async { |
| final Component component = results.component; |
| final IOSink sink = File(filename).openWrite(); |
| final Set<Library> loadedLibraries = results.loadedLibraries; |
| final BinaryPrinter printer = filterExternal |
| ? BinaryPrinter(sink, |
| libraryFilter: (lib) => !loadedLibraries.contains(lib), |
| includeSources: false) |
| : printerFactory.newBinaryPrinter(sink); |
| |
| sortComponent(component); |
| |
| if (incrementalSerializer != null) { |
| incrementalSerializer.writePackagesToSinkAndTrimComponent( |
| component, sink); |
| } else if (unsafePackageSerialization == true) { |
| writePackagesToSinkAndTrimComponent(component, sink); |
| } |
| |
| printer.writeComponentFile(component); |
| await sink.close(); |
| |
| if (_options['split-output-by-packages']) { |
| await writeOutputSplitByPackages( |
| _mainSource, _compilerOptions, results, filename); |
| } |
| |
| final String manifestFilename = _options['far-manifest']; |
| if (manifestFilename != null) { |
| final String output = _options['output-dill']; |
| final String dataDir = _options.options.contains('component-name') |
| ? _options['component-name'] |
| : _options['data-dir']; |
| await createFarManifest(output, dataDir, manifestFilename); |
| } |
| } |
| |
| Future<Null> invalidateIfInitializingFromDill() async { |
| if (_kernelBinaryFilename != _kernelBinaryFilenameFull) return null; |
| // If the generator is initialized, it's not going to initialize from dill |
| // again anyway, so there's no reason to spend time invalidating what should |
| // be invalidated by the normal approach anyway. |
| if (_generator.initialized) return null; |
| |
| final File f = File(_initializeFromDill); |
| if (!f.existsSync()) return null; |
| |
| Component component; |
| try { |
| component = loadComponentSourceFromBytes(f.readAsBytesSync()); |
| } catch (e) { |
| // If we cannot load the dill file we shouldn't initialize from it. |
| _generator = _createGenerator(null); |
| return null; |
| } |
| |
| nextUri: |
| for (Uri uri in component.uriToSource.keys) { |
| if (uri == null || '$uri' == '') continue nextUri; |
| |
| final List<int> oldBytes = component.uriToSource[uri].source; |
| FileSystemEntity entity; |
| try { |
| entity = _compilerOptions.fileSystem.entityForUri(uri); |
| } catch (_) { |
| // Ignore errors that might be caused by non-file uris. |
| continue nextUri; |
| } |
| |
| bool exists; |
| try { |
| exists = await entity.exists(); |
| } catch (e) { |
| exists = false; |
| } |
| |
| if (!exists) { |
| _generator.invalidate(uri); |
| continue nextUri; |
| } |
| final List<int> newBytes = await entity.readAsBytes(); |
| if (oldBytes.length != newBytes.length) { |
| _generator.invalidate(uri); |
| continue nextUri; |
| } |
| for (int i = 0; i < oldBytes.length; ++i) { |
| if (oldBytes[i] != newBytes[i]) { |
| _generator.invalidate(uri); |
| continue nextUri; |
| } |
| } |
| } |
| } |
| |
| @override |
| Future<Null> recompileDelta({String entryPoint}) async { |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| await invalidateIfInitializingFromDill(); |
| if (entryPoint != null) { |
| _mainSource = resolveInputUri(entryPoint); |
| } |
| errors.clear(); |
| |
| Component deltaProgram = await _generator.compile(entryPoint: _mainSource); |
| if (deltaProgram != null && transformer != null) { |
| transformer.transform(deltaProgram); |
| } |
| |
| KernelCompilationResults results = KernelCompilationResults( |
| deltaProgram, |
| const {}, |
| _generator.getClassHierarchy(), |
| _generator.getCoreTypes(), |
| deltaProgram.uriToSource.keys); |
| |
| if (_compilerOptions.target.name == 'dartdevc') { |
| await writeJavascriptBundle(results, _kernelBinaryFilename, |
| _options['filesystem-scheme'], _options['dartdevc-module-format']); |
| } else { |
| await writeDillFile(results, _kernelBinaryFilename, |
| incrementalSerializer: _generator.incrementalSerializer); |
| } |
| _updateWidgetCache(deltaProgram); |
| |
| _outputStream.writeln(boundaryKey); |
| await _outputDependenciesDelta(results.compiledSources); |
| _outputStream |
| .writeln('$boundaryKey $_kernelBinaryFilename ${errors.length}'); |
| _kernelBinaryFilename = _kernelBinaryFilenameIncremental; |
| } |
| |
| @override |
| Future<Null> compileExpression( |
| String expression, |
| List<String> definitions, |
| List<String> typeDefinitions, |
| String libraryUri, |
| String klass, |
| bool isStatic) async { |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| Procedure procedure = await _generator.compileExpression( |
| expression, definitions, typeDefinitions, libraryUri, klass, isStatic); |
| if (procedure != null) { |
| Component component = createExpressionEvaluationComponent(procedure); |
| final IOSink sink = File(_kernelBinaryFilename).openWrite(); |
| sink.add(serializeComponent(component)); |
| await sink.close(); |
| _outputStream |
| .writeln('$boundaryKey $_kernelBinaryFilename ${errors.length}'); |
| _kernelBinaryFilename = _kernelBinaryFilenameIncremental; |
| } else { |
| _outputStream.writeln(boundaryKey); |
| } |
| } |
| |
| /// Program compilers per module. |
| /// |
| /// Produced suring initial compilation of the module to JavaScript, |
| /// cached to be used for expression compilation in [compileExpressionToJs]. |
| final Map<String, ProgramCompiler> cachedProgramCompilers = {}; |
| |
| @override |
| Future<Null> compileExpressionToJs( |
| String libraryUri, |
| int line, |
| int column, |
| Map<String, String> jsModules, |
| Map<String, String> jsFrameValues, |
| String moduleName, |
| String expression) async { |
| _generator.accept(); |
| errors.clear(); |
| |
| if (_bundler == null) { |
| reportError('JavaScript bundler is null'); |
| return; |
| } |
| if (!cachedProgramCompilers.containsKey(moduleName)) { |
| reportError('Cannot find kernel2js compiler for $moduleName.'); |
| return; |
| } |
| |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| |
| _processedOptions.ticker |
| .logMs('Compiling expression to JavaScript in $moduleName'); |
| |
| final kernel2jsCompiler = cachedProgramCompilers[moduleName]; |
| Component component = _generator.lastKnownGoodComponent; |
| component.computeCanonicalNames(); |
| |
| _processedOptions.ticker.logMs('Computed component'); |
| |
| final expressionCompiler = new ExpressionCompiler( |
| _compilerOptions, |
| parseModuleFormat(_options['dartdevc-module-format'] as String), |
| errors, |
| _generator.generator, |
| kernel2jsCompiler, |
| component, |
| ); |
| |
| final procedure = await expressionCompiler.compileExpressionToJs( |
| libraryUri, line, column, jsFrameValues, expression); |
| |
| final result = errors.length > 0 ? errors[0] : procedure; |
| |
| // TODO(annagrin): kernelBinaryFilename is too specific |
| // rename to _outputFileName? |
| await File(_kernelBinaryFilename).writeAsString(result); |
| |
| _processedOptions.ticker.logMs('Compiled expression to JavaScript'); |
| |
| _outputStream |
| .writeln('$boundaryKey $_kernelBinaryFilename ${errors.length}'); |
| |
| // TODO(annagrin): do we need to add asserts/error reporting if |
| // initial compilation didn't happen and _kernelBinaryFilename |
| // is different from below? |
| if (procedure != null) { |
| _kernelBinaryFilename = _kernelBinaryFilenameIncremental; |
| } |
| } |
| |
| @override |
| void reportError(String msg) { |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| _outputStream.writeln(msg); |
| _outputStream.writeln(boundaryKey); |
| } |
| |
| /// Map of already serialized dill data. All uris in a serialized component |
| /// maps to the same blob of data. Used by |
| /// [writePackagesToSinkAndTrimComponent]. |
| Map<Uri, List<int>> cachedPackageLibraries = Map<Uri, List<int>>(); |
| |
| /// Map of dependencies for already serialized dill data. |
| /// E.g. if blob1 dependents on blob2, but only using a single file from blob1 |
| /// that does not dependent on blob2, blob2 would not be included leaving the |
| /// dill file in a weird state that could cause the VM to crash if asked to |
| /// forcefully compile everything. Used by |
| /// [writePackagesToSinkAndTrimComponent]. |
| Map<Uri, List<Uri>> cachedPackageDependencies = Map<Uri, List<Uri>>(); |
| |
| writePackagesToSinkAndTrimComponent( |
| Component deltaProgram, Sink<List<int>> ioSink) { |
| if (deltaProgram == null) return; |
| |
| List<Library> packageLibraries = <Library>[]; |
| List<Library> libraries = <Library>[]; |
| deltaProgram.computeCanonicalNames(); |
| |
| for (var lib in deltaProgram.libraries) { |
| Uri uri = lib.importUri; |
| if (uri.scheme == "package") { |
| packageLibraries.add(lib); |
| } else { |
| libraries.add(lib); |
| } |
| } |
| deltaProgram.libraries |
| ..clear() |
| ..addAll(libraries); |
| |
| Map<String, List<Library>> newPackages = Map<String, List<Library>>(); |
| Set<List<int>> alreadyAdded = Set<List<int>>(); |
| |
| addDataAndDependentData(List<int> data, Uri uri) { |
| if (alreadyAdded.add(data)) { |
| ioSink.add(data); |
| // Now also add all dependencies. |
| for (Uri dep in cachedPackageDependencies[uri]) { |
| addDataAndDependentData(cachedPackageLibraries[dep], dep); |
| } |
| } |
| } |
| |
| for (Library lib in packageLibraries) { |
| List<int> data = cachedPackageLibraries[lib.fileUri]; |
| if (data != null) { |
| addDataAndDependentData(data, lib.fileUri); |
| } else { |
| String package = lib.importUri.pathSegments.first; |
| newPackages[package] ??= <Library>[]; |
| newPackages[package].add(lib); |
| } |
| } |
| |
| for (String package in newPackages.keys) { |
| List<Library> libraries = newPackages[package]; |
| Component singleLibrary = Component( |
| libraries: libraries, |
| uriToSource: deltaProgram.uriToSource, |
| nameRoot: deltaProgram.root); |
| singleLibrary.setMainMethodAndMode(null, false, deltaProgram.mode); |
| ByteSink byteSink = ByteSink(); |
| final BinaryPrinter printer = printerFactory.newBinaryPrinter(byteSink); |
| printer.writeComponentFile(singleLibrary); |
| |
| // Record things this package blob dependent on. |
| Set<Uri> libraryUris = Set<Uri>(); |
| for (Library lib in libraries) { |
| libraryUris.add(lib.fileUri); |
| } |
| Set<Uri> deps = Set<Uri>(); |
| for (Library lib in libraries) { |
| for (LibraryDependency dep in lib.dependencies) { |
| Library dependencyLibrary = dep.importedLibraryReference.asLibrary; |
| if (dependencyLibrary.importUri.scheme != "package") continue; |
| Uri dependencyLibraryUri = |
| dep.importedLibraryReference.asLibrary.fileUri; |
| if (libraryUris.contains(dependencyLibraryUri)) continue; |
| deps.add(dependencyLibraryUri); |
| } |
| } |
| |
| List<int> data = byteSink.builder.takeBytes(); |
| for (Library lib in libraries) { |
| cachedPackageLibraries[lib.fileUri] = data; |
| cachedPackageDependencies[lib.fileUri] = List<Uri>.from(deps); |
| } |
| ioSink.add(data); |
| } |
| } |
| |
| @override |
| void acceptLastDelta() { |
| _generator.accept(); |
| _widgetCache?.reset(); |
| } |
| |
| @override |
| Future<void> rejectLastDelta() async { |
| final String boundaryKey = Uuid().generateV4(); |
| _outputStream.writeln('result $boundaryKey'); |
| await _generator.reject(); |
| _outputStream.writeln(boundaryKey); |
| } |
| |
| @override |
| void invalidate(Uri uri) { |
| _generator.invalidate(uri); |
| _widgetCache?.invalidate(uri); |
| } |
| |
| @override |
| void resetIncrementalCompiler() { |
| _generator.resetDeltaState(); |
| _widgetCache?.reset(); |
| _kernelBinaryFilename = _kernelBinaryFilenameFull; |
| } |
| |
| IncrementalCompiler _createGenerator(Uri initializeFromDillUri) { |
| return IncrementalCompiler(_compilerOptions, _mainSource, |
| initializeFromDillUri: initializeFromDillUri, |
| incrementalSerialization: incrementalSerialization); |
| } |
| |
| /// If the flutter widget cache is enabled, check if a single class was modified. |
| /// |
| /// The resulting class name is written as a String to |
| /// `_kernelBinaryFilename`.widget_cache, or else the file is deleted |
| /// if it exists. |
| /// |
| /// Should not run if a full component is requested. |
| void _updateWidgetCache(Component partialComponent) { |
| if (_widgetCache == null || _generator.fullComponent) { |
| return; |
| } |
| final String singleModifiedClassName = |
| _widgetCache.checkSingleWidgetTypeModified( |
| _generator.lastKnownGoodComponent, |
| partialComponent, |
| _generator.getClassHierarchy(), |
| ); |
| final File outputFile = File('$_kernelBinaryFilename.widget_cache'); |
| if (singleModifiedClassName != null) { |
| outputFile.writeAsStringSync(singleModifiedClassName); |
| } else if (outputFile.existsSync()) { |
| outputFile.deleteSync(); |
| } |
| } |
| |
| Uri _ensureFolderPath(String path) { |
| String uriPath = Uri.file(path).toString(); |
| if (!uriPath.endsWith('/')) { |
| uriPath = '$uriPath/'; |
| } |
| return Uri.base.resolve(uriPath); |
| } |
| |
| /// Runs the given function [f] in a Zone that redirects all prints into |
| /// [_outputStream]. |
| Future<T> _runWithPrintRedirection<T>(Future<T> f()) { |
| return runZoned(() => Future<T>(f), |
| zoneSpecification: ZoneSpecification( |
| print: (Zone self, ZoneDelegate parent, Zone zone, String line) => |
| _outputStream.writeln(line))); |
| } |
| } |
| |
| /// A [Sink] that directly writes data into a byte builder. |
| class ByteSink implements Sink<List<int>> { |
| final BytesBuilder builder = BytesBuilder(); |
| |
| void add(List<int> data) { |
| builder.add(data); |
| } |
| |
| void close() {} |
| } |
| |
| class _CompileExpressionRequest { |
| String expression; |
| // Note that FE will reject a compileExpression command by returning a null |
| // procedure when defs or typeDefs include an illegal identifier. |
| List<String> defs = <String>[]; |
| List<String> typeDefs = <String>[]; |
| String library; |
| String klass; |
| bool isStatic; |
| } |
| |
| class _CompileExpressionToJsRequest { |
| String libraryUri; |
| int line; |
| int column; |
| Map<String, String> jsModules = <String, String>{}; |
| Map<String, String> jsFrameValues = <String, String>{}; |
| String moduleName; |
| String expression; |
| } |
| |
| /// Listens for the compilation commands on [input] stream. |
| /// This supports "interactive" recompilation mode of execution. |
| StreamSubscription<String> listenAndCompile(CompilerInterface compiler, |
| Stream<List<int>> input, ArgResults options, Completer<int> completer, |
| {IncrementalCompiler generator}) { |
| _State state = _State.READY_FOR_INSTRUCTION; |
| _CompileExpressionRequest compileExpressionRequest; |
| _CompileExpressionToJsRequest compileExpressionToJsRequest; |
| String boundaryKey; |
| String recompileEntryPoint; |
| return input |
| .transform(utf8.decoder) |
| .transform(const LineSplitter()) |
| .listen((String string) async { |
| switch (state) { |
| case _State.READY_FOR_INSTRUCTION: |
| const String COMPILE_INSTRUCTION_SPACE = 'compile '; |
| const String RECOMPILE_INSTRUCTION_SPACE = 'recompile '; |
| const String COMPILE_EXPRESSION_INSTRUCTION_SPACE = |
| 'compile-expression '; |
| const String COMPILE_EXPRESSION_TO_JS_INSTRUCTION_SPACE = |
| 'compile-expression-to-js '; |
| if (string.startsWith(COMPILE_INSTRUCTION_SPACE)) { |
| final String entryPoint = |
| string.substring(COMPILE_INSTRUCTION_SPACE.length); |
| await compiler.compile(entryPoint, options, generator: generator); |
| } else if (string.startsWith(RECOMPILE_INSTRUCTION_SPACE)) { |
| // 'recompile [<entryPoint>] <boundarykey>' |
| // where <boundarykey> can't have spaces |
| final String remainder = |
| string.substring(RECOMPILE_INSTRUCTION_SPACE.length); |
| final int spaceDelim = remainder.lastIndexOf(' '); |
| if (spaceDelim > -1) { |
| recompileEntryPoint = remainder.substring(0, spaceDelim); |
| boundaryKey = remainder.substring(spaceDelim + 1); |
| } else { |
| boundaryKey = remainder; |
| } |
| state = _State.RECOMPILE_LIST; |
| } else if (string |
| .startsWith(COMPILE_EXPRESSION_TO_JS_INSTRUCTION_SPACE)) { |
| // 'compile-expression-to-js <boundarykey> |
| // libraryUri |
| // line |
| // column |
| // jsModules (one k-v pair per line) |
| // ... |
| // <boundarykey> |
| // jsFrameValues (one k-v pair per line) |
| // ... |
| // <boundarykey> |
| // moduleName |
| // expression |
| compileExpressionToJsRequest = _CompileExpressionToJsRequest(); |
| boundaryKey = string |
| .substring(COMPILE_EXPRESSION_TO_JS_INSTRUCTION_SPACE.length); |
| state = _State.COMPILE_EXPRESSION_TO_JS_LIBRARYURI; |
| } else if (string.startsWith(COMPILE_EXPRESSION_INSTRUCTION_SPACE)) { |
| // 'compile-expression <boundarykey> |
| // expression |
| // definitions (one per line) |
| // ... |
| // <boundarykey> |
| // type-defintions (one per line) |
| // ... |
| // <boundarykey> |
| // <libraryUri: String> |
| // <klass: String> |
| // <isStatic: true|false> |
| compileExpressionRequest = _CompileExpressionRequest(); |
| boundaryKey = |
| string.substring(COMPILE_EXPRESSION_INSTRUCTION_SPACE.length); |
| state = _State.COMPILE_EXPRESSION_EXPRESSION; |
| } else if (string == 'accept') { |
| compiler.acceptLastDelta(); |
| } else if (string == 'reject') { |
| await compiler.rejectLastDelta(); |
| } else if (string == 'reset') { |
| compiler.resetIncrementalCompiler(); |
| } else if (string == 'quit') { |
| if (!completer.isCompleted) { |
| completer.complete(0); |
| } |
| } |
| break; |
| case _State.RECOMPILE_LIST: |
| if (string == boundaryKey) { |
| compiler.recompileDelta(entryPoint: recompileEntryPoint); |
| state = _State.READY_FOR_INSTRUCTION; |
| } else |
| compiler.invalidate(Uri.base.resolve(string)); |
| break; |
| case _State.COMPILE_EXPRESSION_EXPRESSION: |
| compileExpressionRequest.expression = string; |
| state = _State.COMPILE_EXPRESSION_DEFS; |
| break; |
| case _State.COMPILE_EXPRESSION_DEFS: |
| if (string == boundaryKey) { |
| state = _State.COMPILE_EXPRESSION_TYPEDEFS; |
| } else { |
| compileExpressionRequest.defs.add(string); |
| } |
| break; |
| case _State.COMPILE_EXPRESSION_TYPEDEFS: |
| if (string == boundaryKey) { |
| state = _State.COMPILE_EXPRESSION_LIBRARY_URI; |
| } else { |
| compileExpressionRequest.typeDefs.add(string); |
| } |
| break; |
| case _State.COMPILE_EXPRESSION_LIBRARY_URI: |
| compileExpressionRequest.library = string; |
| state = _State.COMPILE_EXPRESSION_KLASS; |
| break; |
| case _State.COMPILE_EXPRESSION_KLASS: |
| compileExpressionRequest.klass = string.isEmpty ? null : string; |
| state = _State.COMPILE_EXPRESSION_IS_STATIC; |
| break; |
| case _State.COMPILE_EXPRESSION_IS_STATIC: |
| if (string == 'true' || string == 'false') { |
| compileExpressionRequest.isStatic = string == 'true'; |
| compiler.compileExpression( |
| compileExpressionRequest.expression, |
| compileExpressionRequest.defs, |
| compileExpressionRequest.typeDefs, |
| compileExpressionRequest.library, |
| compileExpressionRequest.klass, |
| compileExpressionRequest.isStatic); |
| } else { |
| compiler |
| .reportError('Got $string. Expected either "true" or "false"'); |
| } |
| state = _State.READY_FOR_INSTRUCTION; |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_LIBRARYURI: |
| compileExpressionToJsRequest.libraryUri = string; |
| state = _State.COMPILE_EXPRESSION_TO_JS_LINE; |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_LINE: |
| compileExpressionToJsRequest.line = int.parse(string); |
| state = _State.COMPILE_EXPRESSION_TO_JS_COLUMN; |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_COLUMN: |
| compileExpressionToJsRequest.column = int.parse(string); |
| state = _State.COMPILE_EXPRESSION_TO_JS_JSMODULUES; |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_JSMODULUES: |
| if (string == boundaryKey) { |
| state = _State.COMPILE_EXPRESSION_TO_JS_JSFRAMEVALUES; |
| } else { |
| var list = string.split(':'); |
| var key = list[0]; |
| var value = list[1]; |
| compileExpressionToJsRequest.jsModules[key] = value; |
| } |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_JSFRAMEVALUES: |
| if (string == boundaryKey) { |
| state = _State.COMPILE_EXPRESSION_TO_JS_MODULENAME; |
| } else { |
| var list = string.split(':'); |
| var key = list[0]; |
| var value = list[1]; |
| compileExpressionToJsRequest.jsFrameValues[key] = value; |
| } |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_MODULENAME: |
| compileExpressionToJsRequest.moduleName = string; |
| state = _State.COMPILE_EXPRESSION_TO_JS_EXPRESSION; |
| break; |
| case _State.COMPILE_EXPRESSION_TO_JS_EXPRESSION: |
| compileExpressionToJsRequest.expression = string; |
| compiler.compileExpressionToJs( |
| compileExpressionToJsRequest.libraryUri, |
| compileExpressionToJsRequest.line, |
| compileExpressionToJsRequest.column, |
| compileExpressionToJsRequest.jsModules, |
| compileExpressionToJsRequest.jsFrameValues, |
| compileExpressionToJsRequest.moduleName, |
| compileExpressionToJsRequest.expression); |
| state = _State.READY_FOR_INSTRUCTION; |
| break; |
| } |
| }); |
| } |
| |
| /// Entry point for this module, that creates `_FrontendCompiler` instance and |
| /// processes user input. |
| /// `compiler` is an optional parameter so it can be replaced with mocked |
| /// version for testing. |
| Future<int> starter( |
| List<String> args, { |
| CompilerInterface compiler, |
| Stream<List<int>> input, |
| StringSink output, |
| IncrementalCompiler generator, |
| BinaryPrinterFactory binaryPrinterFactory, |
| }) async { |
| ArgResults options; |
| try { |
| options = argParser.parse(args); |
| } catch (error) { |
| print('ERROR: $error\n'); |
| print(usage); |
| return 1; |
| } |
| |
| if (options['train']) { |
| if (options.rest.isEmpty) { |
| throw Exception('Must specify input.dart'); |
| } |
| |
| final String input = options.rest[0]; |
| final String sdkRoot = options['sdk-root']; |
| final String platform = options['platform']; |
| final Directory temp = |
| Directory.systemTemp.createTempSync('train_frontend_server'); |
| try { |
| final String outputTrainingDill = path.join(temp.path, 'app.dill'); |
| final List<String> args = <String>[ |
| '--incremental', |
| '--sdk-root=$sdkRoot', |
| '--output-dill=$outputTrainingDill', |
| ]; |
| if (platform != null) { |
| args.add('--platform=${Uri.file(platform)}'); |
| } |
| options = argParser.parse(args); |
| compiler ??= |
| FrontendCompiler(output, printerFactory: binaryPrinterFactory); |
| |
| await compiler.compile(input, options, generator: generator); |
| compiler.acceptLastDelta(); |
| await compiler.recompileDelta(); |
| compiler.acceptLastDelta(); |
| compiler.resetIncrementalCompiler(); |
| await compiler.recompileDelta(); |
| compiler.acceptLastDelta(); |
| await compiler.recompileDelta(); |
| compiler.acceptLastDelta(); |
| return 0; |
| } finally { |
| temp.deleteSync(recursive: true); |
| } |
| } |
| |
| compiler ??= FrontendCompiler(output, |
| printerFactory: binaryPrinterFactory, |
| unsafePackageSerialization: options["unsafe-package-serialization"], |
| incrementalSerialization: options["incremental-serialization"], |
| useDebuggerModuleNames: options['debugger-module-names'], |
| emitDebugMetadata: options['experimental-emit-debug-metadata'], |
| emitDebugSymbols: options['emit-debug-symbols']); |
| |
| if (options.rest.isNotEmpty) { |
| return await compiler.compile(options.rest[0], options, |
| generator: generator) |
| ? 0 |
| : 254; |
| } |
| |
| Completer<int> completer = Completer<int>(); |
| var subscription = listenAndCompile( |
| compiler, input ?? stdin, options, completer, |
| generator: generator); |
| return completer.future..then((value) => subscription.cancel()); |
| } |
