Vijay Menon
e6b1853c40
R=jmesserly@google.com Review URL: https://chromereviews.googleplex.com/126787013
102 lines
3.2 KiB
Dart
102 lines
3.2 KiB
Dart
/// Command line tool to run the checker on a Dart program.
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library ddc.bin.checker;
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import 'dart:io';
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import 'package:path/path.dart' as path;
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import 'package:args/args.dart';
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import 'package:analyzer/analyzer.dart';
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import 'package:analyzer/src/generated/ast.dart';
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import 'package:analyzer/src/generated/element.dart';
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import 'package:logging/logging.dart' as logger;
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import 'package:ddc/codegenerator.dart';
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import 'package:ddc/typechecker.dart';
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import 'package:ddc/src/dart_sdk.dart' show dartSdkDirectory, mockSdkSources;
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import 'package:ddc/src/utils.dart';
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ArgResults parse(List argv) {
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var parser = new ArgParser()
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..addFlag(
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'sdk-check', abbr: 's', help: 'Typecheck sdk libs', defaultsTo: false)
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..addOption('log', abbr: 'l', help: 'Logging level', defaultsTo: 'severe')
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..addOption('dart-sdk', help: 'Dart SDK Path', defaultsTo: null)
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..addFlag(
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'mock-sdk', abbr: 'm', help: 'Use a mock Dart SDK', defaultsTo: false)
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..addOption('out', abbr: 'o', help: 'Output directory', defaultsTo: null);
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return parser.parse(argv);
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}
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/// Sets up the type checker logger to print a span that highlights error
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/// messages.
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void setupLogger(String levelName, bool useColors) {
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levelName = levelName.toUpperCase();
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logger.Level level = logger.Level.LEVELS
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.firstWhere((logger.Level l) => l.name == levelName);
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logger.Logger.root.level = level;
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logger.Logger.root.onRecord.listen((logger.LogRecord rec) {
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AstNode node = rec.error;
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if (node == null) {
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print('${rec.level.name.toLowerCase()}: ${rec.message}');
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return;
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}
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final root = node.root as CompilationUnit;
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final source = (root.element as CompilationUnitElementImpl).source;
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final begin = node is AnnotatedNode ?
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node.firstTokenAfterCommentAndMetadata.offset : node.offset;
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final span = spanFor(source, begin, node.end);
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final color = colorOf(rec.level.name);
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print('${span.message(rec.message, color: color)}');
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});
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}
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void main(List argv) {
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// Parse the command-line options.
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ArgResults args = parse(argv);
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bool shouldMockSdk = args['mock-sdk'];
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String dartSdkPath;
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if (!shouldMockSdk) {
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dartSdkPath = args['dart-sdk'];
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if (dartSdkPath == null) dartSdkPath = dartSdkDirectory;
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if (dartSdkPath == null) {
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print('Could not automatically find dart sdk path.');
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print('Please pass in explicitly: --dart-sdk <path>');
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exit(1);
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}
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}
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if (args.rest.length == 0) {
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print('Expected filename.');
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exit(1);
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}
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var useColors = stdioType(stdout) != StdioType.TERMINAL;
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setupLogger(args['log'], useColors);
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// Run checker
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var uri = new Uri.file(path.absolute(args.rest[0]));
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var results = checkProgram(uri,
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sdkDir: shouldMockSdk ? null : dartSdkPath,
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mockSdkSources: shouldMockSdk ? mockSdkSources : null,
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checkSdk: args['sdk-check'],
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useColors: useColors);
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// Generate code.
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if (args['out'] != null) {
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String outDir = args['out'];
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var cg = new CodeGenerator(outDir, uri, results.libraries, results.infoMap,
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results.rules);
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cg.generate();
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}
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if (results.failure) {
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_log.shout('Program is not valid');
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} else {
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_log.shout('Program is valid');
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}
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}
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final _log = new logger.Logger('ddc.bin.checker');
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