mirror of
https://github.com/flutter/flutter.git
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365 lines
16 KiB
Dart
365 lines
16 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:async';
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import 'dart:collection';
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import 'dart:convert';
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import 'dart:io';
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import 'package:den_api/den_api.dart';
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import 'package:path/path.dart' as path;
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import '../artifacts.dart';
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import '../base/globals.dart';
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import '../base/process.dart';
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import '../build_configuration.dart';
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import '../runner/flutter_command.dart';
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class AnalyzeCommand extends FlutterCommand {
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String get name => 'analyze';
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String get description => 'Runs a carefully configured dartanalyzer over the current project\'s Dart code.';
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AnalyzeCommand() {
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argParser.addFlag('flutter-repo', help: 'Include all the examples and tests from the Flutter repository.', defaultsTo: false);
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argParser.addFlag('current-directory', help: 'Include all the Dart files in the current directory, if any.', defaultsTo: true);
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argParser.addFlag('current-package', help: 'Include the lib/main.dart file from the current directory, if any.', defaultsTo: true);
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argParser.addFlag('preamble', help: 'Display the number of files that will be analyzed.', defaultsTo: true);
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argParser.addFlag('congratulate', help: 'Show output even when there are no errors, warnings, hints, or lints.', defaultsTo: true);
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}
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bool get requiresProjectRoot => false;
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@override
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Future<int> runInProject() async {
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Stopwatch stopwatch = new Stopwatch()..start();
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Set<String> pubSpecDirectories = new HashSet<String>();
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List<String> dartFiles = argResults.rest.toList();
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bool foundAnyInCurrentDirectory = false;
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bool foundAnyInFlutterRepo = false;
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for (String file in dartFiles) {
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file = path.normalize(path.absolute(file));
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String root = path.rootPrefix(file);
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while (file != root) {
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file = path.dirname(file);
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if (FileSystemEntity.isFileSync(path.join(file, 'pubspec.yaml'))) {
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pubSpecDirectories.add(file);
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if (file == path.normalize(path.absolute(ArtifactStore.flutterRoot))) {
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foundAnyInFlutterRepo = true;
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} else if (file == path.normalize(path.absolute(path.current))) {
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foundAnyInCurrentDirectory = true;
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}
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break;
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}
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}
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}
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if (argResults['flutter-repo']) {
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// .../examples/*/*.dart
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// .../examples/*/lib/main.dart
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Directory examples = new Directory(path.join(ArtifactStore.flutterRoot, 'examples'));
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for (FileSystemEntity entry in examples.listSync()) {
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if (entry is Directory) {
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bool foundOne = false;
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for (FileSystemEntity subentry in entry.listSync()) {
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if (subentry is File && subentry.path.endsWith('.dart')) {
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dartFiles.add(subentry.path);
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foundOne = true;
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} else if (subentry is Directory && path.basename(subentry.path) == 'lib') {
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String mainPath = path.join(subentry.path, 'main.dart');
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if (FileSystemEntity.isFileSync(mainPath)) {
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dartFiles.add(mainPath);
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foundOne = true;
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}
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}
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}
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if (foundOne)
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pubSpecDirectories.add(entry.path);
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}
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}
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// .../packages/*/bin/*.dart
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// .../packages/*/lib/main.dart
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// .../packages/*/test/*_test.dart
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// .../packages/*/test/*/*_test.dart
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// .../packages/*/benchmark/*/*_bench.dart
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Directory packages = new Directory(path.join(ArtifactStore.flutterRoot, 'packages'));
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for (FileSystemEntity entry in packages.listSync()) {
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if (entry is Directory) {
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bool foundOne = false;
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Directory binDirectory = new Directory(path.join(entry.path, 'bin'));
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if (binDirectory.existsSync()) {
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for (FileSystemEntity subentry in binDirectory.listSync()) {
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if (subentry is File && subentry.path.endsWith('.dart')) {
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dartFiles.add(subentry.path);
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foundOne = true;
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}
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}
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}
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String mainPath = path.join(entry.path, 'lib', 'main.dart');
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if (FileSystemEntity.isFileSync(mainPath)) {
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dartFiles.add(mainPath);
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foundOne = true;
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}
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Directory testDirectory = new Directory(path.join(entry.path, 'test'));
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if (testDirectory.existsSync()) {
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for (FileSystemEntity entry in testDirectory.listSync()) {
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if (entry is Directory) {
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for (FileSystemEntity subentry in entry.listSync()) {
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if (subentry is File && subentry.path.endsWith('_test.dart')) {
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dartFiles.add(subentry.path);
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foundOne = true;
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}
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}
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} else if (entry is File && entry.path.endsWith('_test.dart')) {
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dartFiles.add(entry.path);
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foundOne = true;
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}
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}
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}
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Directory benchmarkDirectory = new Directory(path.join(entry.path, 'benchmark'));
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if (benchmarkDirectory.existsSync()) {
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for (FileSystemEntity entry in benchmarkDirectory.listSync()) {
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if (entry is Directory) {
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for (FileSystemEntity subentry in entry.listSync()) {
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if (subentry is File && subentry.path.endsWith('_bench.dart')) {
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dartFiles.add(subentry.path);
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foundOne = true;
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}
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}
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} else if (entry is File && entry.path.endsWith('_bench.dart')) {
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dartFiles.add(entry.path);
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foundOne = true;
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}
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}
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}
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if (foundOne)
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pubSpecDirectories.add(entry.path);
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}
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}
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}
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if (argResults['current-directory']) {
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// ./*.dart
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Directory currentDirectory = new Directory('.');
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bool foundOne = false;
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for (FileSystemEntity entry in currentDirectory.listSync()) {
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if (entry is File && entry.path.endsWith('.dart')) {
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dartFiles.add(entry.path);
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foundOne = true;
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}
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}
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if (foundOne) {
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pubSpecDirectories.add('.');
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foundAnyInCurrentDirectory = true;
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}
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}
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if (argResults['current-package']) {
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// ./lib/main.dart
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String mainPath = 'lib/main.dart';
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if (FileSystemEntity.isFileSync(mainPath)) {
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dartFiles.add(mainPath);
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pubSpecDirectories.add('.');
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foundAnyInCurrentDirectory = true;
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}
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}
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// prepare a Dart file that references all the above Dart files
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StringBuffer mainBody = new StringBuffer();
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for (int index = 0; index < dartFiles.length; index += 1)
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mainBody.writeln('import \'${path.normalize(path.absolute(dartFiles[index]))}\' as file$index;');
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mainBody.writeln('void main() { }');
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// prepare a union of all the .packages files
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Map<String, String> packages = <String, String>{};
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bool hadInconsistentRequirements = false;
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for (Directory directory in pubSpecDirectories.map((path) => new Directory(path))) {
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String pubSpecYamlPath = path.join(directory.path, 'pubspec.yaml');
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File pubSpecYamlFile = new File(pubSpecYamlPath);
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if (pubSpecYamlFile.existsSync()) {
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Pubspec pubSpecYaml = await Pubspec.load(pubSpecYamlPath);
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String packageName = pubSpecYaml.name;
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String packagePath = path.normalize(path.absolute(path.join(directory.path, 'lib')));
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if (packages.containsKey(packageName) && packages[packageName] != packagePath) {
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printError('Inconsistent requirements for $packageName; using $packagePath (and not ${packages[packageName]}).');
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hadInconsistentRequirements = true;
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}
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packages[packageName] = packagePath;
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}
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File dotPackages = new File(path.join(directory.path, '.packages'));
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if (dotPackages.existsSync()) {
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Map<String, String> dependencies = <String, String>{};
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dotPackages
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.readAsStringSync()
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.split('\n')
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.where((line) => !line.startsWith(new RegExp(r'^ *#')))
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.forEach((line) {
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int colon = line.indexOf(':');
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if (colon > 0)
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dependencies[line.substring(0, colon)] = path.normalize(path.absolute(directory.path, path.fromUri(line.substring(colon+1))));
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});
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for (String package in dependencies.keys) {
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if (packages.containsKey(package)) {
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if (packages[package] != dependencies[package]) {
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printError('Inconsistent requirements for $package; using ${packages[package]} (and not ${dependencies[package]}).');
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hadInconsistentRequirements = true;
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}
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} else {
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packages[package] = dependencies[package];
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}
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}
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}
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}
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if (hadInconsistentRequirements) {
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if (foundAnyInFlutterRepo)
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printError('You may need to run "dart ${path.normalize(path.relative(path.join(ArtifactStore.flutterRoot, 'dev/update_packages.dart')))} --upgrade".');
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if (foundAnyInCurrentDirectory)
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printError('You may need to run "pub upgrade".');
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}
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String buildDir = buildConfigurations.firstWhere((BuildConfiguration config) => config.testable, orElse: () => null)?.buildDir;
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if (buildDir != null) {
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packages['sky_engine'] = path.join(buildDir, 'gen/dart-pkg/sky_engine/lib');
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packages['sky_services'] = path.join(buildDir, 'gen/dart-pkg/sky_services/lib');
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}
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StringBuffer packagesBody = new StringBuffer();
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for (String package in packages.keys)
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packagesBody.writeln('$package:${path.toUri(packages[package])}');
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// save the Dart file and the .packages file to disk
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Directory host = Directory.systemTemp.createTempSync('flutter-analyze-');
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File mainFile = new File(path.join(host.path, 'main.dart'))..writeAsStringSync(mainBody.toString());
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File packagesFile = new File(path.join(host.path, '.packages'))..writeAsStringSync(packagesBody.toString());
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List<String> cmd = <String>[
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sdkBinaryName('dartanalyzer'),
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// do not set '--warnings', since that will include the entire Dart SDK
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'--ignore-unrecognized-flags',
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'--supermixin',
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'--enable-strict-call-checks',
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'--enable_type_checks',
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'--strong',
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'--package-warnings',
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'--fatal-warnings',
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'--strong-hints',
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'--fatal-hints',
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'--lints',
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'--packages', packagesFile.path,
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mainFile.path
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];
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if (argResults['preamble']) {
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if (dartFiles.length == 1) {
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printStatus('Analyzing ${dartFiles.first}...');
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} else {
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printStatus('Analyzing ${dartFiles.length} files...');
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}
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}
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Process process = await Process.start(
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cmd[0],
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cmd.sublist(1),
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workingDirectory: host.path
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);
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int errorCount = 0;
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StringBuffer output = new StringBuffer();
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process.stdout.transform(UTF8.decoder).listen((String data) {
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output.write(data);
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});
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process.stderr.transform(UTF8.decoder).listen((String data) {
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// dartanalyzer doesn't seem to ever output anything on stderr
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errorCount += 1;
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printError(data);
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});
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int exitCode = await process.exitCode;
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host.deleteSync(recursive: true);
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List<Pattern> patternsToSkip = <Pattern>[
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'Analyzing [${mainFile.path}]...',
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new RegExp('^\\[(hint|error)\\] Unused import \\(${mainFile.path},'),
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new RegExp(r'^\[.+\] .+ \(.+/\.pub-cache/.+'),
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new RegExp(r'^\[error\] Invalid override\. The type of [^ ]+ \(.+\) is not a subtype of [^ ]+ \(.+\)\.'), // we allow type narrowing
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new RegExp('^\\[error\\] The argument type \'List<T>\' cannot be assigned to the parameter type \'List<.+>\''), // until we have generic methods, there's not much choice if you want to use map()
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new RegExp(r'^\[error\] Field declaration .+ cannot be overridden in .+\.'), // we allow overriding fields (if they use super, ideally...)
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new RegExp(r'^\[warning\] .+ will need runtime check to cast to type .+'), // https://github.com/dart-lang/sdk/issues/24542
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new RegExp(r'^\[error\] Type check failed: .*\(dynamic\) is not of type'), // allow unchecked casts from dynamic
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new RegExp('^\\[error\\] Target of URI does not exist: \'dart:ui_internals\''), // https://github.com/flutter/flutter/issues/83
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new RegExp(r'\[lint\] Prefer using lowerCamelCase for constant names.'), // sometimes we have no choice (e.g. when matching other platforms)
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new RegExp(r'\[lint\] Avoid defining a one-member abstract class when a simple function will do.'), // too many false-positives; code review should catch real instances
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new RegExp(r'\[info\] TODO.+'),
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new RegExp('\\[warning\\] Missing concrete implementation of \'RenderObject\\.applyPaintTransform\''), // https://github.com/dart-lang/sdk/issues/25232
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new RegExp(r'[0-9]+ (error|warning|hint|lint).+found\.'),
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new RegExp(r'^$'),
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];
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RegExp generalPattern = new RegExp(r'^\[(error|warning|hint|lint)\] (.+) \(([^(),]+), line ([0-9]+), col ([0-9]+)\)$');
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RegExp allowedIdentifiersPattern = new RegExp(r'_?([A-Z]|_+)\b');
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RegExp constructorTearOffsPattern = new RegExp('.+#.+// analyzer doesn\'t like constructor tear-offs');
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RegExp ignorePattern = new RegExp(r'// analyzer says "([^"]+)"');
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List<String> errorLines = output.toString().split('\n');
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for (String errorLine in errorLines) {
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if (patternsToSkip.every((Pattern pattern) => pattern.allMatches(errorLine).isEmpty)) {
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Match groups = generalPattern.firstMatch(errorLine);
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if (groups != null) {
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String level = groups[1];
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String filename = groups[3];
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String errorMessage = groups[2];
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int lineNumber = int.parse(groups[4]);
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int colNumber = int.parse(groups[5]);
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File source = new File(filename);
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List<String> sourceLines = source.readAsLinesSync();
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String sourceLine = (lineNumber < sourceLines.length) ? sourceLines[lineNumber-1] : '';
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bool shouldIgnore = false;
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if (filename.endsWith('.mojom.dart')) {
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// autogenerated code - TODO(ianh): Fix the Dart mojom compiler
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shouldIgnore = true;
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} else if ((sourceLines[0] == '/**') && (' * DO NOT EDIT. This is code generated'.matchAsPrefix(sourceLines[1]) != null)) {
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// autogenerated code - TODO(ianh): Fix the intl package resource generator
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shouldIgnore = true;
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} else if (level == 'lint' && errorMessage == 'Name non-constant identifiers using lowerCamelCase.') {
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if (allowedIdentifiersPattern.matchAsPrefix(sourceLine, colNumber-1) != null)
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shouldIgnore = true;
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} else if (constructorTearOffsPattern.allMatches(sourceLine).isNotEmpty) {
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shouldIgnore = true;
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} else {
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Iterable<Match> ignoreGroups = ignorePattern.allMatches(sourceLine);
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for (Match ignoreGroup in ignoreGroups) {
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if (errorMessage.contains(ignoreGroup[1])) {
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shouldIgnore = true;
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break;
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}
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}
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}
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if (shouldIgnore)
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continue;
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}
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printError(errorLine);
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errorCount += 1;
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}
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}
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stopwatch.stop();
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String elapsed = (stopwatch.elapsedMilliseconds / 1000.0).toStringAsFixed(1);
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if (exitCode < 0 || exitCode > 3) // 0 = nothing, 1 = hints, 2 = warnings, 3 = errors
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return exitCode;
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if (errorCount > 0)
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return 1; // Doesn't this mean 'hints' per the above comment?
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if (argResults['congratulate'])
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printStatus('No analyzer warnings! (ran in ${elapsed}s)');
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return 0;
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}
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}
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