mirror of
https://github.com/flutter/flutter.git
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93 lines
3.4 KiB
Dart
93 lines
3.4 KiB
Dart
// Copyright 2017 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:convert';
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import 'dart:io';
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import 'package:flutter_devicelab/framework/framework.dart';
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import 'package:flutter_devicelab/framework/utils.dart';
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import 'package:path/path.dart' as path;
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// the numbers below are odd, so that the totals don't seem round. :-)
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const double todoCost = 1009.0; // about two average SWE days, in dollars
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const double ignoreCost = 2003.0; // four average SWE days, in dollars
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const double pythonCost = 3001.0; // six average SWE days, in dollars
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const double skipCost = 2473.0; // 20 hours: 5 to fix the issue we're ignoring, 15 to fix the bugs we missed because the test was off
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const double ignoreForFileCost = 2477.0; // similar thinking as skipCost
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const double asDynamicCost = 2003.0; // same as ignoring analyzer warning
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final RegExp todoPattern = RegExp(r'(?://|#) *TODO');
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final RegExp ignorePattern = RegExp(r'// *ignore:');
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final RegExp ignoreForFilePattern = RegExp(r'// *ignore_for_file:');
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final RegExp asDynamicPattern = RegExp(r'as dynamic');
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Future<double> findCostsForFile(File file) async {
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if (path.extension(file.path) == '.py')
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return pythonCost;
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if (path.extension(file.path) != '.dart' &&
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path.extension(file.path) != '.yaml' &&
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path.extension(file.path) != '.sh')
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return 0.0;
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final bool isTest = file.path.endsWith('_test.dart');
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double total = 0.0;
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for (String line in await file.readAsLines()) {
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if (line.contains(todoPattern))
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total += todoCost;
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if (line.contains(ignorePattern))
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total += ignoreCost;
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if (line.contains(ignoreForFilePattern))
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total += ignoreForFileCost;
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if (line.contains(asDynamicPattern))
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total += asDynamicCost;
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if (isTest && line.contains('skip:'))
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total += skipCost;
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}
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return total;
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}
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Future<double> findCostsForRepo() async {
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final Process git = await startProcess(
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'git',
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<String>['ls-files', '--full-name', flutterDirectory.path],
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workingDirectory: flutterDirectory.path,
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);
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double total = 0.0;
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await for (String entry in git.stdout.transform<String>(utf8.decoder).transform<String>(const LineSplitter()))
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total += await findCostsForFile(File(path.join(flutterDirectory.path, entry)));
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final int gitExitCode = await git.exitCode;
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if (gitExitCode != 0)
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throw Exception('git exit with unexpected error code $gitExitCode');
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return total;
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}
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Future<int> countDependencies() async {
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final List<String> lines = (await evalFlutter(
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'update-packages',
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options: <String>['--transitive-closure'],
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)).split('\n');
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final int count = lines.where((String line) => line.contains('->')).length;
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if (count < 2) // we'll always have flutter and flutter_test, at least...
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throw Exception('"flutter update-packages --transitive-closure" returned bogus output:\n${lines.join("\n")}');
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return count;
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}
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const String _kCostBenchmarkKey = 'technical_debt_in_dollars';
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const String _kNumberOfDependenciesKey = 'dependencies_count';
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Future<Null> main() async {
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await task(() async {
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return TaskResult.success(
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<String, dynamic>{
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_kCostBenchmarkKey: await findCostsForRepo(),
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_kNumberOfDependenciesKey: await countDependencies(),
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},
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benchmarkScoreKeys: <String>[
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_kCostBenchmarkKey,
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_kNumberOfDependenciesKey,
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],
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);
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});
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}
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