Linter Demo

Errors: 4

Warnings: 10

File: /home/fstrocco/Dart/dart/benchmark/linter/bin/linter.dart

// 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. import 'dart:io'; import 'dart:math' as math; import 'package:analyzer/src/generated/engine.dart'; import 'package:args/args.dart'; import 'package:linter/src/config.dart'; import 'package:linter/src/formatter.dart'; import 'package:linter/src/io.dart'; import 'package:linter/src/linter.dart'; void main(List<String> args) { runLinter(args, new LinterOptions()); } const processFileFailedExitCode = 65; const unableToProcessExitCode = 64; String getRoot(List<String> paths) => paths.length == 1 && new Directory(paths[0]).existsSync() ? paths[0] : null; isLinterErrorCode(int code) => code == unableToProcessExitCode || code == processFileFailedExitCode; void printUsage(ArgParser parser, IOSink out, [String error]) { var message = "Lints Dart source files and pubspecs."; if (error != null) { message = error; } out.writeln('''$message Usage: linter <file> ${parser.usage} For more information, see https://github.com/dart-lang/linter '''); } void runLinter(List<String> args, LinterOptions initialLintOptions) { var parser = new ArgParser(allowTrailingOptions: true); parser ..addFlag("help", abbr: "h", negatable: false, help: "Shows usage information.") ..addFlag("stats", abbr: "s", negatable: false, help: "Show lint statistics.") ..addFlag('visit-transitive-closure', help: 'Visit the transitive closure of imported/exported libraries.') ..addFlag('quiet', abbr: 'q', help: "Don't show individual lint errors.") ..addFlag('machine', help: 'Print results in a format suitable for parsing.', defaultsTo: false, negatable: false) ..addOption('config', abbr: 'c', help: 'Use configuration from this file.') ..addOption('dart-sdk', help: 'Custom path to a Dart SDK.') ..addOption('package-root', abbr: 'p', help: 'Custom package root. (Discouraged.)'); var options; try { options = parser.parse(args); } on FormatException catch (err) { printUsage(parser, errorSink, err.message); exitCode = unableToProcessExitCode; return; } if (options["help"]) { printUsage(parser, outSink); return; } if (options.rest.isEmpty) { printUsage(parser, errorSink, "Please provide at least one file or directory to lint."); exitCode = unableToProcessExitCode; return; } var lintOptions = initialLintOptions; var configFile = options["config"]; if (configFile != null) { var config = new LintConfig.parse(readFile(configFile)); lintOptions.configure(config); } var customSdk = options['dart-sdk']; if (customSdk != null) { lintOptions.dartSdkPath = customSdk; } var customPackageRoot = options['package-root']; if (customPackageRoot != null) { lintOptions.packageRootPath = customPackageRoot; } lintOptions.visitTransitiveClosure = options['visit-transitive-closure']; var linter = new DartLinter(lintOptions); List<File> filesToLint = []; for (var path in options.rest) { filesToLint.addAll(collectFiles(path)); } try { List<AnalysisErrorInfo> errors = linter.lintFiles(filesToLint); if (errors.length > 0) { exitCode = _maxSeverity(errors); } var commonRoot = getRoot(options.rest); var stats = options['stats']; ReportFormatter reporter = new ReportFormatter( errors, lintOptions.filter, outSink, fileCount: linter.numSourcesAnalyzed, fileRoot: commonRoot, showStatistics: stats, machineOutput: options['machine'], quiet: options['quiet']); reporter.write(); } catch (err, stack) { errorSink.writeln('''An error occurred while linting Please report it at: github.com/dart-lang/linter/issues $err $stack'''); } } int _maxSeverity(List<AnalysisErrorInfo> errors) { int max = 0; errors.forEach((info) => info.errors.forEach( (error) => max = math.max(max, error.errorCode.errorSeverity.ordinal))); return max; }