analyze.dart 59.7 KB
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
// 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:core' hide print;
import 'dart:io' hide exit;
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import 'dart:typed_data';
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import 'package:crypto/crypto.dart';
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import 'package:meta/meta.dart';
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import 'package:path/path.dart' as path;
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import 'allowlist.dart';
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import 'run_command.dart';
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import 'utils.dart';
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final String flutterRoot = path.dirname(path.dirname(path.dirname(path.fromUri(Platform.script))));
final String flutter = path.join(flutterRoot, 'bin', Platform.isWindows ? 'flutter.bat' : 'flutter');
final String dart = path.join(flutterRoot, 'bin', 'cache', 'dart-sdk', 'bin', Platform.isWindows ? 'dart.exe' : 'dart');
final String pub = path.join(flutterRoot, 'bin', 'cache', 'dart-sdk', 'bin', Platform.isWindows ? 'pub.bat' : 'pub');
final String pubCache = path.join(flutterRoot, '.pub-cache');

/// When you call this, you can pass additional arguments to pass custom
/// arguments to flutter analyze. For example, you might want to call this
/// script with the parameter --dart-sdk to use custom dart sdk.
///
/// For example:
/// bin/cache/dart-sdk/bin/dart dev/bots/analyze.dart --dart-sdk=/tmp/dart-sdk
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Future<void> main(List<String> arguments) async {
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  print('$clock STARTING ANALYSIS');
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  try {
    await run(arguments);
  } on ExitException catch (error) {
    error.apply();
  }
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  print('$clock ${bold}Analysis successful.$reset');
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}

Future<void> run(List<String> arguments) async {
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  bool assertsEnabled = false;
  assert(() { assertsEnabled = true; return true; }());
  if (!assertsEnabled) {
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    exitWithError(<String>['The analyze.dart script must be run with --enable-asserts.']);
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  }
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  print('$clock runtimeType in toString...');
  await verifyNoRuntimeTypeInToString(flutterRoot);

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  print('$clock Unexpected binaries...');
  await verifyNoBinaries(flutterRoot);

  print('$clock Trailing spaces...');
  await verifyNoTrailingSpaces(flutterRoot); // assumes no unexpected binaries, so should be after verifyNoBinaries

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  print('$clock Deprecations...');
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  await verifyDeprecations(flutterRoot);
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  print('$clock Licenses...');
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  await verifyNoMissingLicense(flutterRoot);
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  print('$clock Test imports...');
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  await verifyNoTestImports(flutterRoot);
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  print('$clock Bad imports (framework)...');
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  await verifyNoBadImportsInFlutter(flutterRoot);
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  print('$clock Bad imports (tools)...');
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  await verifyNoBadImportsInFlutterTools(flutterRoot);
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  print('$clock Internationalization...');
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  await verifyInternationalizations();
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  print('$clock Integration test timeouts...');
  await verifyIntegrationTestTimeouts(flutterRoot);

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  // Ensure that all package dependencies are in sync.
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  print('$clock Package dependencies...');
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  await runCommand(flutter, <String>['update-packages', '--verify-only'],
    workingDirectory: flutterRoot,
  );

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  /// Ensure that no new dependencies have been accidentally
  /// added to core packages.
  print('$clock Package Allowlist...');
  await _checkConsumerDependencies();

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  // Analyze all the Dart code in the repo.
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  print('$clock Dart analysis...');
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  await _runFlutterAnalyze(flutterRoot, options: <String>[
    '--flutter-repo',
    ...arguments,
  ]);

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  // Try with the --watch analyzer, to make sure it returns success also.
  // The --benchmark argument exits after one run.
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  print('$clock Dart analysis (with --watch)...');
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  await _runFlutterAnalyze(flutterRoot, options: <String>[
    '--flutter-repo',
    '--watch',
    '--benchmark',
    ...arguments,
  ]);
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  // Analyze all the sample code in the repo
  print('$clock Sample code...');
  await runCommand(dart,
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    <String>[path.join(flutterRoot, 'dev', 'bots', 'analyze_sample_code.dart')],
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    workingDirectory: flutterRoot,
  );

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  // Try analysis against a big version of the gallery; generate into a temporary directory.
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  print('$clock Dart analysis (mega gallery)...');
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  final Directory outDir = Directory.systemTemp.createTempSync('flutter_mega_gallery.');
  try {
    await runCommand(dart,
      <String>[
        path.join(flutterRoot, 'dev', 'tools', 'mega_gallery.dart'),
        '--out',
        outDir.path,
      ],
      workingDirectory: flutterRoot,
    );
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    await _runFlutterAnalyze(outDir.path, options: <String>[
      '--watch',
      '--benchmark',
      ...arguments,
    ]);
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  } finally {
    outDir.deleteSync(recursive: true);
  }
}

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// TESTS

final RegExp _findDeprecationPattern = RegExp(r'@[Dd]eprecated');
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final RegExp _deprecationPattern1 = RegExp(r'^( *)@Deprecated\($'); // flutter_ignore: deprecation_syntax (see analyze.dart)
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final RegExp _deprecationPattern2 = RegExp(r"^ *'(.+) '$");
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final RegExp _deprecationPattern3 = RegExp(r"^ *'This feature was deprecated after v([0-9]+)\.([0-9]+)\.([0-9]+)(\-[0-9]+\.[0-9]+\.pre)?\.',?$");
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final RegExp _deprecationPattern4 = RegExp(r'^ *\)$');

/// Some deprecation notices are special, for example they're used to annotate members that
/// will never go away and were never allowed but which we are trying to show messages for.
/// (One example would be a library that intentionally conflicts with a member in another
/// library to indicate that it is incompatible with that other library. Another would be
/// the regexp just above...)
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const String _ignoreDeprecation = ' // flutter_ignore: deprecation_syntax (see analyze.dart)';
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/// Some deprecation notices are exempt for historical reasons. They must have an issue listed.
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final RegExp _legacyDeprecation = RegExp(r' // flutter_ignore: deprecation_syntax, https://github.com/flutter/flutter/issues/[0-9]+$');
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Future<void> verifyDeprecations(String workingDirectory, { int minimumMatches = 2000 }) async {
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  final List<String> errors = <String>[];
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  await for (final File file in _allFiles(workingDirectory, 'dart', minimumMatches: minimumMatches)) {
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    int lineNumber = 0;
    final List<String> lines = file.readAsLinesSync();
    final List<int> linesWithDeprecations = <int>[];
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    for (final String line in lines) {
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      if (line.contains(_findDeprecationPattern) &&
          !line.endsWith(_ignoreDeprecation) &&
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          !line.contains(_legacyDeprecation)) {
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        linesWithDeprecations.add(lineNumber);
      }
      lineNumber += 1;
    }
    for (int lineNumber in linesWithDeprecations) {
      try {
        final Match match1 = _deprecationPattern1.firstMatch(lines[lineNumber]);
        if (match1 == null)
          throw 'Deprecation notice does not match required pattern.';
        final String indent = match1[1];
        lineNumber += 1;
        if (lineNumber >= lines.length)
          throw 'Incomplete deprecation notice.';
        Match match3;
        String message;
        do {
          final Match match2 = _deprecationPattern2.firstMatch(lines[lineNumber]);
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          if (match2 == null) {
            String possibleReason = '';
            if (lines[lineNumber].trimLeft().startsWith('"')) {
              possibleReason = ' You might have used double quotes (") for the string instead of single quotes (\').';
            }
            throw 'Deprecation notice does not match required pattern.$possibleReason';
          }
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          if (!lines[lineNumber].startsWith("$indent  '"))
            throw 'Unexpected deprecation notice indent.';
          if (message == null) {
            final String firstChar = String.fromCharCode(match2[1].runes.first);
            if (firstChar.toUpperCase() != firstChar)
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              throw 'Deprecation notice should be a grammatically correct sentence and start with a capital letter; see style guide: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo';
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          }
          message = match2[1];
          lineNumber += 1;
          if (lineNumber >= lines.length)
            throw 'Incomplete deprecation notice.';
          match3 = _deprecationPattern3.firstMatch(lines[lineNumber]);
        } while (match3 == null);
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        final int v1 = int.parse(match3[1]);
        final int v2 = int.parse(match3[2]);
        final bool hasV4 = match3[4] != null;
        if (v1 > 1 || (v1 == 1 && v2 >= 20)) {
          if (!hasV4)
            throw 'Deprecation notice does not accurately indicate a dev branch version number; please see https://flutter.dev/docs/development/tools/sdk/releases to find the latest dev build version number.';
        }
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        if (!message.endsWith('.') && !message.endsWith('!') && !message.endsWith('?'))
          throw 'Deprecation notice should be a grammatically correct sentence and end with a period.';
        if (!lines[lineNumber].startsWith("$indent  '"))
          throw 'Unexpected deprecation notice indent.';
        lineNumber += 1;
        if (lineNumber >= lines.length)
          throw 'Incomplete deprecation notice.';
        if (!lines[lineNumber].contains(_deprecationPattern4))
          throw 'End of deprecation notice does not match required pattern.';
        if (!lines[lineNumber].startsWith('$indent)'))
          throw 'Unexpected deprecation notice indent.';
      } catch (error) {
        errors.add('${file.path}:${lineNumber + 1}: $error');
      }
    }
  }
  // Fail if any errors
  if (errors.isNotEmpty) {
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    exitWithError(<String>[
      ...errors,
      '${bold}See: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes$reset',
    ]);
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  }
}

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String _generateLicense(String prefix) {
  assert(prefix != null);
  return '${prefix}Copyright 2014 The Flutter Authors. All rights reserved.\n'
         '${prefix}Use of this source code is governed by a BSD-style license that can be\n'
         '${prefix}found in the LICENSE file.';
}

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Future<void> verifyNoMissingLicense(String workingDirectory, { bool checkMinimums = true }) async {
  final int overrideMinimumMatches = checkMinimums ? null : 0;
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'dart', overrideMinimumMatches ?? 2000, _generateLicense('// '));
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'java', overrideMinimumMatches ?? 39, _generateLicense('// '));
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'h', overrideMinimumMatches ?? 30, _generateLicense('// '));
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'm', overrideMinimumMatches ?? 30, _generateLicense('// '));
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'swift', overrideMinimumMatches ?? 10, _generateLicense('// '));
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'gradle', overrideMinimumMatches ?? 80, _generateLicense('// '));
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'gn', overrideMinimumMatches ?? 0, _generateLicense('# '));
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'sh', overrideMinimumMatches ?? 1, '#!/usr/bin/env bash\n${_generateLicense('# ')}');
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'bat', overrideMinimumMatches ?? 1, '@ECHO off\n${_generateLicense('REM ')}');
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  await _verifyNoMissingLicenseForExtension(workingDirectory, 'ps1', overrideMinimumMatches ?? 1, _generateLicense('# '));
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'html', overrideMinimumMatches ?? 1, '<!DOCTYPE HTML>\n<!-- ${_generateLicense('')} -->', trailingBlank: false);
  await _verifyNoMissingLicenseForExtension(workingDirectory, 'xml', overrideMinimumMatches ?? 1, '<!-- ${_generateLicense('')} -->');
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}

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Future<void> _verifyNoMissingLicenseForExtension(String workingDirectory, String extension, int minimumMatches, String license, { bool trailingBlank = true }) async {
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  assert(!license.endsWith('\n'));
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  final String licensePattern = '$license\n${trailingBlank ? '\n' : ''}';
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  final List<String> errors = <String>[];
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  await for (final File file in _allFiles(workingDirectory, extension, minimumMatches: minimumMatches)) {
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    final String contents = file.readAsStringSync().replaceAll('\r\n', '\n');
    if (contents.isEmpty)
      continue; // let's not go down the /bin/true rabbit hole
    if (!contents.startsWith(licensePattern))
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      errors.add(file.path);
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  }
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  // Fail if any errors
  if (errors.isNotEmpty) {
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    final String s = errors.length == 1 ? ' does' : 's do';
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    exitWithError(<String>[
      '${bold}The following ${errors.length} file$s not have the right license header:$reset',
      ...errors,
      'The expected license header is:',
      license,
      if (trailingBlank) '...followed by a blank line.',
    ]);
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  }
}

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final RegExp _testImportPattern = RegExp(r'''import (['"])([^'"]+_test\.dart)\1''');
const Set<String> _exemptTestImports = <String>{
  'package:flutter_test/flutter_test.dart',
  'hit_test.dart',
  'package:test_api/src/backend/live_test.dart',
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  'package:integration_test/integration_test.dart',
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};
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Future<void> verifyNoTestImports(String workingDirectory) async {
  final List<String> errors = <String>[];
  assert("// foo\nimport 'binding_test.dart' as binding;\n'".contains(_testImportPattern));
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  final List<File> dartFiles = await _allFiles(path.join(workingDirectory, 'packages'), 'dart', minimumMatches: 1500).toList();
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  for (final File file in dartFiles) {
    for (final String line in file.readAsLinesSync()) {
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      final Match match = _testImportPattern.firstMatch(line);
      if (match != null && !_exemptTestImports.contains(match.group(2)))
        errors.add(file.path);
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    }
  }
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  // Fail if any errors
  if (errors.isNotEmpty) {
    final String s = errors.length == 1 ? '' : 's';
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    exitWithError(<String>[
      '${bold}The following file$s import a test directly. Test utilities should be in their own file.$reset',
      ...errors,
    ]);
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  }
}

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Future<void> verifyNoBadImportsInFlutter(String workingDirectory) async {
  final List<String> errors = <String>[];
  final String libPath = path.join(workingDirectory, 'packages', 'flutter', 'lib');
  final String srcPath = path.join(workingDirectory, 'packages', 'flutter', 'lib', 'src');
  // Verify there's one libPath/*.dart for each srcPath/*/.
  final List<String> packages = Directory(libPath).listSync()
    .where((FileSystemEntity entity) => entity is File && path.extension(entity.path) == '.dart')
    .map<String>((FileSystemEntity entity) => path.basenameWithoutExtension(entity.path))
    .toList()..sort();
  final List<String> directories = Directory(srcPath).listSync()
    .whereType<Directory>()
    .map<String>((Directory entity) => path.basename(entity.path))
    .toList()..sort();
  if (!_listEquals<String>(packages, directories)) {
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    errors.add(<String>[
      'flutter/lib/*.dart does not match flutter/lib/src/*/:',
      'These are the exported packages:',
      ...packages.map<String>((String path) => '  lib/$path.dart'),
      'These are the directories:',
      ...directories.map<String>((String path) => '  lib/src/$path/')
    ].join('\n'));
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  }
  // Verify that the imports are well-ordered.
  final Map<String, Set<String>> dependencyMap = <String, Set<String>>{};
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  for (final String directory in directories) {
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    dependencyMap[directory] = await _findFlutterDependencies(path.join(srcPath, directory), errors, checkForMeta: directory != 'foundation');
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  }
  assert(dependencyMap['material'].contains('widgets') &&
         dependencyMap['widgets'].contains('rendering') &&
         dependencyMap['rendering'].contains('painting')); // to make sure we're convinced _findFlutterDependencies is finding some
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  for (final String package in dependencyMap.keys) {
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    if (dependencyMap[package].contains(package)) {
      errors.add(
        'One of the files in the $yellow$package$reset package imports that package recursively.'
      );
    }
  }
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  for (final String key in dependencyMap.keys) {
    for (final String dependency in dependencyMap[key]) {
      if (dependencyMap[dependency] != null)
        continue;
      // Sanity check before performing _deepSearch, to ensure there's no rogue
      // dependencies.
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      final String validFilenames = dependencyMap.keys.map((String name) => '$name.dart').join(', ');
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      errors.add(
        '$key imported package:flutter/$dependency.dart '
        'which is not one of the valid exports { $validFilenames }.\n'
        'Consider changing $dependency.dart to one of them.'
      );
    }
  }

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  for (final String package in dependencyMap.keys) {
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    final List<String> loop = _deepSearch<String>(dependencyMap, package);
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    if (loop != null) {
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      errors.add('${yellow}Dependency loop:$reset ${loop.join(' depends on ')}');
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    }
  }
  // Fail if any errors
  if (errors.isNotEmpty) {
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    exitWithError(<String>[
      if (errors.length == 1)
        '${bold}An error was detected when looking at import dependencies within the Flutter package:$reset'
      else
        '${bold}Multiple errors were detected when looking at import dependencies within the Flutter package:$reset',
      ...errors,
    ]);
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  }
}

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Future<void> verifyNoBadImportsInFlutterTools(String workingDirectory) async {
  final List<String> errors = <String>[];
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  final List<File> files = await _allFiles(path.join(workingDirectory, 'packages', 'flutter_tools', 'lib'), 'dart', minimumMatches: 200).toList();
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  for (final File file in files) {
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    if (file.readAsStringSync().contains('package:flutter_tools/')) {
      errors.add('$yellow${file.path}$reset imports flutter_tools.');
    }
  }
  // Fail if any errors
  if (errors.isNotEmpty) {
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    exitWithError(<String>[
      if (errors.length == 1)
        '${bold}An error was detected when looking at import dependencies within the flutter_tools package:$reset'
      else
        '${bold}Multiple errors were detected when looking at import dependencies within the flutter_tools package:$reset',
      ...errors.map((String paragraph) => '$paragraph\n'),
    ]);
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  }
}

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Future<void> verifyIntegrationTestTimeouts(String workingDirectory) async {
  final List<String> errors = <String>[];
  final String dev = path.join(workingDirectory, 'dev');
  final List<File> files = await _allFiles(dev, 'dart', minimumMatches: 1)
      .where((File file) => file.path.contains('test_driver') && (file.path.endsWith('_test.dart') || file.path.endsWith('util.dart')))
      .toList();
  for (final File file in files) {
    final String contents = file.readAsStringSync();
    final int testCount = ' test('.allMatches(contents).length;
    final int timeoutNoneCount = 'timeout: Timeout.none'.allMatches(contents).length;
    if (testCount != timeoutNoneCount) {
      errors.add('$yellow${file.path}$reset has at least $testCount test(s) but only $timeoutNoneCount `Timeout.none`(s).');
    }
  }
  if (errors.isNotEmpty) {
    exitWithError(<String>[
      if (errors.length == 1)
        '${bold}An error was detected when looking at import dependencies within the flutter_tools package:$reset'
      else
        '${bold}Multiple errors were detected when looking at import dependencies within the flutter_tools package:$reset',
      ...errors.map((String paragraph) => '$paragraph\n'),
    ]);
  }
}

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Future<void> verifyInternationalizations() async {
  final EvalResult materialGenResult = await _evalCommand(
    dart,
    <String>[
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      path.join('dev', 'tools', 'localization', 'bin', 'gen_localizations.dart'),
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      '--material',
    ],
    workingDirectory: flutterRoot,
  );
  final EvalResult cupertinoGenResult = await _evalCommand(
    dart,
    <String>[
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      path.join('dev', 'tools', 'localization', 'bin', 'gen_localizations.dart'),
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      '--cupertino',
    ],
    workingDirectory: flutterRoot,
  );

  final String materialLocalizationsFile = path.join('packages', 'flutter_localizations', 'lib', 'src', 'l10n', 'generated_material_localizations.dart');
  final String cupertinoLocalizationsFile = path.join('packages', 'flutter_localizations', 'lib', 'src', 'l10n', 'generated_cupertino_localizations.dart');
  final String expectedMaterialResult = await File(materialLocalizationsFile).readAsString();
  final String expectedCupertinoResult = await File(cupertinoLocalizationsFile).readAsString();

  if (materialGenResult.stdout.trim() != expectedMaterialResult.trim()) {
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    exitWithError(<String>[
      '<<<<<<< $materialLocalizationsFile',
      expectedMaterialResult.trim(),
      '=======',
      materialGenResult.stdout.trim(),
      '>>>>>>> gen_localizations',
      'The contents of $materialLocalizationsFile are different from that produced by gen_localizations.',
      '',
      'Did you forget to run gen_localizations.dart after updating a .arb file?',
    ]);
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  }
  if (cupertinoGenResult.stdout.trim() != expectedCupertinoResult.trim()) {
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    exitWithError(<String>[
      '<<<<<<< $cupertinoLocalizationsFile',
      expectedCupertinoResult.trim(),
      '=======',
      cupertinoGenResult.stdout.trim(),
      '>>>>>>> gen_localizations',
      'The contents of $cupertinoLocalizationsFile are different from that produced by gen_localizations.',
      '',
      'Did you forget to run gen_localizations.dart after updating a .arb file?',
    ]);
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  }
}

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Future<void> verifyNoRuntimeTypeInToString(String workingDirectory) async {
  final String flutterLib = path.join(workingDirectory, 'packages', 'flutter', 'lib');
  final Set<String> excludedFiles = <String>{
    path.join(flutterLib, 'src', 'foundation', 'object.dart'), // Calls this from within an assert.
  };
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  final List<File> files = await _allFiles(flutterLib, 'dart', minimumMatches: 400)
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      .where((File file) => !excludedFiles.contains(file.path))
      .toList();
  final RegExp toStringRegExp = RegExp(r'^\s+String\s+to(.+?)?String(.+?)?\(\)\s+(\{|=>)');
  final List<String> problems = <String>[];
  for (final File file in files) {
    final List<String> lines = file.readAsLinesSync();
    for (int index = 0; index < lines.length; index++) {
      if (toStringRegExp.hasMatch(lines[index])) {
        final int sourceLine = index + 1;
        bool _checkForRuntimeType(String line) {
          if (line.contains(r'$runtimeType') || line.contains('runtimeType.toString()')) {
            problems.add('${file.path}:$sourceLine}: toString calls runtimeType.toString');
            return true;
          }
          return false;
        }
        if (_checkForRuntimeType(lines[index])) {
          continue;
        }
        if (lines[index].contains('=>')) {
          while (!lines[index].contains(';')) {
            index++;
            assert(index < lines.length, 'Source file $file has unterminated toString method.');
            if (_checkForRuntimeType(lines[index])) {
              break;
            }
          }
        } else {
          int openBraceCount = '{'.allMatches(lines[index]).length - '}'.allMatches(lines[index]).length;
          while (!lines[index].contains('}') && openBraceCount > 0) {
            index++;
            assert(index < lines.length, 'Source file $file has unbalanced braces in a toString method.');
            if (_checkForRuntimeType(lines[index])) {
              break;
            }
            openBraceCount += '{'.allMatches(lines[index]).length;
            openBraceCount -= '}'.allMatches(lines[index]).length;
          }
        }
      }
    }
  }
  if (problems.isNotEmpty)
    exitWithError(problems);
}

526
Future<void> verifyNoTrailingSpaces(String workingDirectory, { int minimumMatches = 4000 }) async {
527
  final List<File> files = await _allFiles(workingDirectory, null, minimumMatches: minimumMatches)
528 529 530 531 532
    .where((File file) => path.basename(file.path) != 'serviceaccount.enc')
    .where((File file) => path.basename(file.path) != 'Ahem.ttf')
    .where((File file) => path.extension(file.path) != '.snapshot')
    .where((File file) => path.extension(file.path) != '.png')
    .where((File file) => path.extension(file.path) != '.jpg')
533
    .where((File file) => path.extension(file.path) != '.ico')
534
    .where((File file) => path.extension(file.path) != '.jar')
535
    .where((File file) => path.extension(file.path) != '.swp')
536 537
    .toList();
  final List<String> problems = <String>[];
538
  for (final File file in files) {
539 540 541 542 543 544 545 546 547 548 549 550 551 552 553
    final List<String> lines = file.readAsLinesSync();
    for (int index = 0; index < lines.length; index += 1) {
      if (lines[index].endsWith(' ')) {
        problems.add('${file.path}:${index + 1}: trailing U+0020 space character');
      } else if (lines[index].endsWith('\t')) {
        problems.add('${file.path}:${index + 1}: trailing U+0009 tab character');
      }
    }
    if (lines.isNotEmpty && lines.last == '')
      problems.add('${file.path}:${lines.length}: trailing blank line');
  }
  if (problems.isNotEmpty)
    exitWithError(problems);
}

554
@immutable
555
class Hash256 {
556
  const Hash256(this.a, this.b, this.c, this.d);
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612

  factory Hash256.fromDigest(Digest digest) {
    assert(digest.bytes.length == 32);
    return Hash256(
      digest.bytes[ 0] << 56 |
      digest.bytes[ 1] << 48 |
      digest.bytes[ 2] << 40 |
      digest.bytes[ 3] << 32 |
      digest.bytes[ 4] << 24 |
      digest.bytes[ 5] << 16 |
      digest.bytes[ 6] <<  8 |
      digest.bytes[ 7] <<  0,
      digest.bytes[ 8] << 56 |
      digest.bytes[ 9] << 48 |
      digest.bytes[10] << 40 |
      digest.bytes[11] << 32 |
      digest.bytes[12] << 24 |
      digest.bytes[13] << 16 |
      digest.bytes[14] <<  8 |
      digest.bytes[15] <<  0,
      digest.bytes[16] << 56 |
      digest.bytes[17] << 48 |
      digest.bytes[18] << 40 |
      digest.bytes[19] << 32 |
      digest.bytes[20] << 24 |
      digest.bytes[21] << 16 |
      digest.bytes[22] <<  8 |
      digest.bytes[23] <<  0,
      digest.bytes[24] << 56 |
      digest.bytes[25] << 48 |
      digest.bytes[26] << 40 |
      digest.bytes[27] << 32 |
      digest.bytes[28] << 24 |
      digest.bytes[29] << 16 |
      digest.bytes[30] <<  8 |
      digest.bytes[31] <<  0,
    );
  }

  final int a;
  final int b;
  final int c;
  final int d;

  @override
  bool operator ==(Object other) {
    if (other.runtimeType != runtimeType)
      return false;
    return other is Hash256
        && other.a == a
        && other.b == b
        && other.c == c
        && other.d == d;
  }

  @override
613
  int get hashCode => a ^ b ^ c ^ d;
614 615 616 617
}

// DO NOT ADD ANY ENTRIES TO THIS LIST.
// We have a policy of not checking in binaries into this repository.
618 619 620
// If you are adding/changing template images, use the flutter_template_images
// package and a .img.tmpl placeholder instead.
// If you have other binaries to add, please consult Hixie for advice.
621
final Set<Hash256> _legacyBinaries = <Hash256>{
622 623 624 625 626
  // DEFAULT ICON IMAGES

  // packages/flutter_tools/templates/app/android.tmpl/app/src/main/res/mipmap-hdpi/ic_launcher.png
  // packages/flutter_tools/templates/module/android/host_app_common/app.tmpl/src/main/res/mipmap-hdpi/ic_launcher.png
  // (also used by many examples)
627
  const Hash256(0x6A7C8F0D703E3682, 0x108F9662F8133022, 0x36240D3F8F638BB3, 0x91E32BFB96055FEF),
628 629 630

  // packages/flutter_tools/templates/app/android.tmpl/app/src/main/res/mipmap-mdpi/ic_launcher.png
  // (also used by many examples)
631
  const Hash256(0xC7C0C0189145E4E3, 0x2A401C61C9BDC615, 0x754B0264E7AFAE24, 0xE834BB81049EAF81),
632 633 634

  // packages/flutter_tools/templates/app/android.tmpl/app/src/main/res/mipmap-xhdpi/ic_launcher.png
  // (also used by many examples)
635
  const Hash256(0xE14AA40904929BF3, 0x13FDED22CF7E7FFC, 0xBF1D1AAC4263B5EF, 0x1BE8BFCE650397AA),
636 637 638

  // packages/flutter_tools/templates/app/android.tmpl/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
  // (also used by many examples)
639
  const Hash256(0x4D470BF22D5C17D8, 0x4EDC5F82516D1BA8, 0xA1C09559CD761CEF, 0xB792F86D9F52B540),
640 641 642

  // packages/flutter_tools/templates/app/android.tmpl/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
  // (also used by many examples)
643
  const Hash256(0x3C34E1F298D0C9EA, 0x3455D46DB6B7759C, 0x8211A49E9EC6E44B, 0x635FC5C87DFB4180),
644 645 646 647

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
  // (also used by a few examples)
648
  const Hash256(0x7770183009E91411, 0x2DE7D8EF1D235A6A, 0x30C5834424858E0D, 0x2F8253F6B8D31926),
649 650 651 652

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
  // (also used by many examples)
653
  const Hash256(0x5925DAB509451F9E, 0xCBB12CE8A625F9D4, 0xC104718EE20CAFF8, 0xB1B51032D1CD8946),
654 655 656 657 658 659

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
  // (also used by many examples)
660
  const Hash256(0xC4D9A284C12301D0, 0xF50E248EC53ED51A, 0x19A10147B774B233, 0x08399250B0D44C55),
661 662 663 664

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
  // (also used by many examples)
665
  const Hash256(0xBF97F9D3233F33E1, 0x389B09F7B8ADD537, 0x41300CB834D6C7A5, 0xCA32CBED363A4FB2),
666 667 668 669

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
  // (also used by many examples)
670
  const Hash256(0x285442F69A06B45D, 0x9D79DF80321815B5, 0x46473548A37B7881, 0x9B68959C7B8ED237),
671 672 673 674

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
  // (also used by many examples)
675
  const Hash256(0x2AB64AF8AC727EA9, 0x9C6AB9EAFF847F46, 0xFBF2A9A0A78A0ABC, 0xBF3180F3851645B4),
676 677 678 679

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
  // (also used by many examples)
680
  const Hash256(0x9DCA09F4E5ED5684, 0xD3C4DFF41F4E8B7C, 0xB864B438172D72BE, 0x069315FA362930F9),
681 682 683 684

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
  // (also used by many examples)
685
  const Hash256(0xD5AD04DE321EF37C, 0xACC5A7B960AFCCE7, 0x1BDCB96FA020C482, 0x49C1545DD1A0F497),
686 687 688 689 690 691

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
  // (also used by many examples)
692
  const Hash256(0x809ABFE75C440770, 0xC13C4E2E46D09603, 0xC22053E9D4E0E227, 0x5DCB9C1DCFBB2C75),
693 694 695 696

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
  // (also used by many examples)
697
  const Hash256(0x3DB08CB79E7B01B9, 0xE81F956E3A0AE101, 0x48D0FAFDE3EA7AA7, 0x0048DF905AA52CFD),
698 699 700 701

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
  // (also used by many examples)
702
  const Hash256(0x23C13D463F5DCA5C, 0x1F14A14934003601, 0xC29F1218FD461016, 0xD8A22CEF579A665F),
703 704 705 706

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
  // (also used by many examples)
707
  const Hash256(0x6DB7726530D71D3F, 0x52CB59793EB69131, 0x3BAA04796E129E1E, 0x043C0A58A1BFFD2F),
708 709 710 711

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
  // (also used by many examples)
712
  const Hash256(0xCEE565F5E6211656, 0x9B64980B209FD5CA, 0x4B3D3739011F5343, 0x250B33A1A2C6EB65),
713 714 715 716 717 718 719 720

  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
  // packages/flutter_tools/templates/app/ios.tmpl/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
  // packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
  // (also used by many examples)
721
  const Hash256(0x93AE7D494FAD0FB3, 0x0CBF3AE746A39C4B, 0xC7A0F8BBF87FBB58, 0x7A3F3C01F3C5CE20),
722 723 724

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png
  // (also used by a few examples)
725
  const Hash256(0xB18BEBAAD1AD6724, 0xE48BCDF699BA3927, 0xDF3F258FEBE646A3, 0xAB5C62767C6BAB40),
726 727 728

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png
  // (also used by a few examples)
729
  const Hash256(0xF90D839A289ECADB, 0xF2B0B3400DA43EB8, 0x08B84908335AE4A0, 0x07457C4D5A56A57C),
730 731 732

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png
  // (also used by a few examples)
733
  const Hash256(0x592C2ABF84ADB2D3, 0x91AED8B634D3233E, 0x2C65369F06018DCD, 0x8A4B27BA755EDCBE),
734 735 736

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png
  // (also used by a few examples)
737
  const Hash256(0x75D9A0C034113CA8, 0xA1EC11C24B81F208, 0x6630A5A5C65C7D26, 0xA5DC03A1C0A4478C),
738 739 740

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png
  // (also used by a few examples)
741
  const Hash256(0xA896E65745557732, 0xC72BD4EE3A10782F, 0xE2AA95590B5AF659, 0x869E5808DB9C01C1),
742 743 744

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png
  // (also used by a few examples)
745
  const Hash256(0x3A69A8A1AAC5D9A8, 0x374492AF4B6D07A4, 0xCE637659EB24A784, 0x9C4DFB261D75C6A3),
746 747 748

  // packages/flutter_tools/templates/app/macos.tmpl/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png
  // (also used by a few examples)
749
  const Hash256(0xD29D4E0AF9256DC9, 0x2D0A8F8810608A5E, 0x64A132AD8B397CA2, 0xC4DDC0B1C26A68C3),
750

751
  // packages/flutter_tools/templates/app/web/icons/Icon-192.png.copy.tmpl
752
  // dev/integration_tests/flutter_gallery/web/icons/Icon-192.png
753
  const Hash256(0x3DCE99077602F704, 0x21C1C6B2A240BC9B, 0x83D64D86681D45F2, 0x154143310C980BE3),
754 755

  // packages/flutter_tools/templates/app/web/icons/Icon-512.png.copy.tmpl
756
  // dev/integration_tests/flutter_gallery/web/icons/Icon-512.png
757
  const Hash256(0xBACCB205AE45f0B4, 0x21BE1657259B4943, 0xAC40C95094AB877F, 0x3BCBE12CD544DCBE),
758

759
  // packages/flutter_tools/templates/app/web/favicon.png.copy.tmpl
760
  // dev/integration_tests/flutter_gallery/web/favicon.png
761
  const Hash256(0x7AB2525F4B86B65D, 0x3E4C70358A17E5A1, 0xAAF6F437f99CBCC0, 0x46DAD73d59BB9015),
762

763 764
  // GALLERY ICONS

765
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-hdpi/ic_background.png
766
  const Hash256(0x03CFDE53C249475C, 0x277E8B8E90AC8A13, 0xE5FC13C358A94CCB, 0x67CA866C9862A0DD),
767

768
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-hdpi/ic_foreground.png
769
  const Hash256(0x86A83E23A505EFCC, 0x39C358B699EDE12F, 0xC088EE516A1D0C73, 0xF3B5D74DDAD164B1),
770

771
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
772
  const Hash256(0xD813B1A77320355E, 0xB68C485CD47D0F0F, 0x3C7E1910DCD46F08, 0x60A6401B8DC13647),
773

774
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xhdpi/ic_background.png
775
  const Hash256(0x35AFA76BD5D6053F, 0xEE927436C78A8794, 0xA8BA5F5D9FC9653B, 0xE5B96567BB7215ED),
776

777
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xhdpi/ic_foreground.png
778
  const Hash256(0x263CE9B4F1F69B43, 0xEBB08AE9FE8F80E7, 0x95647A59EF2C040B, 0xA8AEB246861A7DFF),
779

780
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
781
  const Hash256(0x5E1A93C3653BAAFF, 0x1AAC6BCEB8DCBC2F, 0x2AE7D68ECB07E507, 0xCB1FA8354B28313A),
782

783
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxhdpi/ic_background.png
784
  const Hash256(0xA5C77499151DDEC6, 0xDB40D0AC7321FD74, 0x0646C0C0F786743F, 0x8F3C3C408CAC5E8C),
785

786
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxhdpi/ic_foreground.png
787
  const Hash256(0x33DE450980A2A16B, 0x1982AC7CDC1E7B01, 0x919E07E0289C2139, 0x65F85BCED8895FEF),
788

789
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
790
  const Hash256(0xC3B8577F4A89BA03, 0x830944FB06C3566B, 0x4C99140A2CA52958, 0x089BFDC3079C59B7),
791

792
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxxhdpi/ic_background.png
793
  const Hash256(0xDEBC241D6F9C5767, 0x8980FDD46FA7ED0C, 0x5B8ACD26BCC5E1BC, 0x473C89B432D467AD),
794

795
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxxhdpi/ic_foreground.png
796
  const Hash256(0xBEFE5F7E82BF8B64, 0x148D869E3742004B, 0xF821A9F5A1BCDC00, 0x357D246DCC659DC2),
797

798
  // dev/integration_tests/flutter_gallery/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
799
  const Hash256(0xC385404341FF9EDD, 0x30FBE76F0EC99155, 0x8EA4F4AFE8CC0C60, 0x1CA3EDEF177E1DA8),
800

801
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-1024.png
802
  const Hash256(0x6BE5751A29F57A80, 0x36A4B31CC542C749, 0x984E49B22BD65CAA, 0x75AE8B2440848719),
803

804
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-120.png
805
  const Hash256(0x9972A2264BFA8F8D, 0x964AFE799EADC1FA, 0x2247FB31097F994A, 0x1495DC32DF071793),
806

807
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-152.png
808
  const Hash256(0x4C7CC9B09BEEDA24, 0x45F57D6967753910, 0x57D68E1A6B883D2C, 0x8C52701A74F1400F),
809

810
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-167.png
811
  const Hash256(0x66DACAC1CFE4D349, 0xDBE994CB9125FFD7, 0x2D795CFC9CF9F739, 0xEDBB06CE25082E9C),
812

813
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-180.png
814
  const Hash256(0x5188621015EBC327, 0xC9EF63AD76E60ECE, 0xE82BDC3E4ABF09E2, 0xEE0139FA7C0A2BE5),
815

816
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-20.png
817
  const Hash256(0x27D2752D04EE9A6B, 0x78410E208F74A6CD, 0xC90D9E03B73B8C60, 0xD05F7D623E790487),
818

819
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-29.png
820
  const Hash256(0xBB20556B2826CF85, 0xD5BAC73AA69C2AC3, 0x8E71DAD64F15B855, 0xB30CB73E0AF89307),
821

822
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-40.png
823
  const Hash256(0x623820FA45CDB0AC, 0x808403E34AD6A53E, 0xA3E9FDAE83EE0931, 0xB020A3A4EF2CDDE7),
824

825
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-58.png
826
  const Hash256(0xC6D631D1E107215E, 0xD4A58FEC5F3AA4B5, 0x0AE9724E07114C0C, 0x453E5D87C2CAD3B3),
827

828
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-60.png
829
  const Hash256(0x4B6F58D1EB8723C6, 0xE717A0D09FEC8806, 0x90C6D1EF4F71836E, 0x618672827979B1A2),
830

831
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-76.png
832
  const Hash256(0x0A1744CC7634D508, 0xE85DD793331F0C8A, 0x0B7C6DDFE0975D8F, 0x29E91C905BBB1BED),
833

834
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-80.png
835
  const Hash256(0x24032FBD1E6519D6, 0x0BA93C0D5C189554, 0xF50EAE23756518A2, 0x3FABACF4BD5DAF08),
836

837
  // dev/integration_tests/flutter_gallery/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-87.png
838
  const Hash256(0xC17BAE6DF6BB234A, 0xE0AF4BEB0B805F12, 0x14E74EB7AA9A30F1, 0x5763689165DA7DDF),
839 840 841 842


  // STOCKS ICONS

843
  // dev/benchmarks/test_apps/stocks/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
844
  const Hash256(0x74052AB5241D4418, 0x7085180608BC3114, 0xD12493C50CD8BBC7, 0x56DED186C37ACE84),
845

846
  // dev/benchmarks/test_apps/stocks/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
847
  const Hash256(0xE37947332E3491CB, 0x82920EE86A086FEA, 0xE1E0A70B3700A7DA, 0xDCAFBDD8F40E2E19),
848

849
  // dev/benchmarks/test_apps/stocks/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
850
  const Hash256(0xE608CDFC0C8579FB, 0xE38873BAAF7BC944, 0x9C9D2EE3685A4FAE, 0x671EF0C8BC41D17C),
851

852
  // dev/benchmarks/test_apps/stocks/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
853
  const Hash256(0xBD53D86977DF9C54, 0xF605743C5ABA114C, 0x9D51D1A8BB917E1A, 0x14CAA26C335CAEBD),
854

855
  // dev/benchmarks/test_apps/stocks/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
856
  const Hash256(0x64E4D02262C4F3D0, 0xBB4FDC21CD0A816C, 0x4CD2A0194E00FB0F, 0x1C3AE4142FAC0D15),
857

858 859
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-60@2x.png
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small-40@3x.png
860
  const Hash256(0x5BA3283A76918FC0, 0xEE127D0F22D7A0B6, 0xDF03DAED61669427, 0x93D89DDD87A08117),
861

862
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-60@3x.png
863
  const Hash256(0xCD7F26ED31DEA42A, 0x535D155EC6261499, 0x34E6738255FDB2C4, 0xBD8D4BDDE9A99B05),
864

865
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-76.png
866
  const Hash256(0x3FA1225FC9A96A7E, 0xCD071BC42881AB0E, 0x7747EB72FFB72459, 0xA37971BBAD27EE24),
867

868
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-76@2x.png
869
  const Hash256(0xCD867001ACD7BBDB, 0x25CDFD452AE89FA2, 0x8C2DC980CAF55F48, 0x0B16C246CFB389BC),
870

871
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-83.5@2x.png
872
  const Hash256(0x848E9736E5C4915A, 0x7945BCF6B32FD56B, 0x1F1E7CDDD914352E, 0xC9681D38EF2A70DA),
873

874
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Notification.png
875
  const Hash256(0x654BA7D6C4E05CA0, 0x7799878884EF8F11, 0xA383E1F24CEF5568, 0x3C47604A966983C8),
876

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  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Notification@2x.png
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small-40.png
879
  const Hash256(0x743056FE7D83FE42, 0xA2990825B6AD0415, 0x1AF73D0D43B227AA, 0x07EBEA9B767381D9),
880

881
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Notification@3x.png
882
  const Hash256(0xA7E1570812D119CF, 0xEF4B602EF28DD0A4, 0x100D066E66F5B9B9, 0x881765DC9303343B),
883

884
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small-40@2x.png
885
  const Hash256(0xB4102839A1E41671, 0x62DACBDEFA471953, 0xB1EE89A0AB7594BE, 0x1D9AC1E67DC2B2CE),
886

887
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small.png
888
  const Hash256(0x70AC6571B593A967, 0xF1CBAEC9BC02D02D, 0x93AD766D8290ADE6, 0x840139BF9F219019),
889

890
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small@2x.png
891
  const Hash256(0x5D87A78386DA2C43, 0xDDA8FEF2CA51438C, 0xE5A276FE28C6CF0A, 0xEBE89085B56665B6),
892

893
  // dev/benchmarks/test_apps/stocks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-Small@3x.png
894
  const Hash256(0x4D9F5E81F668DA44, 0xB20A77F8BF7BA2E1, 0xF384533B5AD58F07, 0xB3A2F93F8635CD96),
895 896 897 898 899 900 901 902


  // LEGACY ICONS

  // dev/benchmarks/complex_layout/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@3x.png
  // dev/benchmarks/microbenchmarks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@3x.png
  // examples/flutter_view/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@3x.png
  // (not really sure where this came from, or why neither the template nor most examples use them)
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  const Hash256(0x6E645DC9ED913AAD, 0xB50ED29EEB16830D, 0xB32CA12F39121DB9, 0xB7BC1449DDDBF8B8),
904 905 906 907 908

  // dev/benchmarks/macrobenchmarks/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
  // dev/integration_tests/codegen/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
  // dev/integration_tests/ios_add2app/ios_add2app/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
  // dev/integration_tests/release_smoke_test/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
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  const Hash256(0xDEFAC77E08EC71EC, 0xA04CCA3C95D1FC33, 0xB9F26E1CB15CB051, 0x47DEFC79CDD7C158),
910 911 912

  // examples/flutter_view/ios/Runner/ic_add.png
  // examples/platform_view/ios/Runner/ic_add.png
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  const Hash256(0x3CCE7450334675E2, 0xE3AABCA20B028993, 0x127BE82FE0EB3DFF, 0x8B027B3BAF052F2F),
914 915

  // examples/image_list/images/coast.jpg
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  const Hash256(0xDA957FD30C51B8D2, 0x7D74C2C918692DC4, 0xD3C5C99BB00F0D6B, 0x5EBB30395A6EDE82),
917 918

  // examples/image_list/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
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  const Hash256(0xB5792CA06F48A431, 0xD4379ABA2160BD5D, 0xE92339FC64C6A0D3, 0x417AA359634CD905),
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  // TEST ASSETS

  // dev/benchmarks/macrobenchmarks/assets/999x1000.png
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  const Hash256(0x553E9C36DFF3E610, 0x6A608BDE822A0019, 0xDE4F1769B6FBDB97, 0xBC3C20E26B839F59),
926 927

  // dev/bots/test/analyze-test-input/root/packages/foo/serviceaccount.enc
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  const Hash256(0xA8100AE6AA1940D0, 0xB663BB31CD466142, 0xEBBDBD5187131B92, 0xD93818987832EB89),
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  // dev/automated_tests/icon/test.png
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  const Hash256(0xE214B4A0FEEEC6FA, 0x8E7AA8CC9BFBEC40, 0xBCDAC2F2DEBC950F, 0x75AF8EBF02BCE459),
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  // dev/integration_tests/android_splash_screens/splash_screen_kitchen_sink/android/app/src/main/res/drawable-land-xxhdpi/flutter_splash_screen.png
  // dev/integration_tests/android_splash_screens/splash_screen_kitchen_sink/android/app/src/main/res/mipmap-land-xxhdpi/flutter_splash_screen.png
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  const Hash256(0x2D4F8D7A3DFEF9D3, 0xA0C66938E169AB58, 0x8C6BBBBD1973E34E, 0x03C428416D010182),
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  // dev/integration_tests/android_splash_screens/splash_screen_kitchen_sink/android/app/src/main/res/drawable-xxhdpi/flutter_splash_screen.png
  // dev/integration_tests/android_splash_screens/splash_screen_kitchen_sink/android/app/src/main/res/mipmap-xxhdpi/flutter_splash_screen.png
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  const Hash256(0xCD46C01BAFA3B243, 0xA6AA1645EEDDE481, 0x143AC8ABAB1A0996, 0x22CAA9D41F74649A),
940 941

  // dev/integration_tests/flutter_driver_screenshot_test/assets/red_square.png
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  const Hash256(0x40054377E1E084F4, 0x4F4410CE8F44C210, 0xABA945DFC55ED0EF, 0x23BDF9469E32F8D3),
943 944

  // dev/integration_tests/flutter_driver_screenshot_test/test_driver/goldens/red_square_image/iPhone7,2.png
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  const Hash256(0x7F9D27C7BC418284, 0x01214E21CA886B2F, 0x40D9DA2B31AE7754, 0x71D68375F9C8A824),
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  // examples/flutter_view/assets/flutter-mark-square-64.png
  // examples/platform_view/assets/flutter-mark-square-64.png
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  const Hash256(0xF416B0D8AC552EC8, 0x819D1F492D1AB5E6, 0xD4F20CF45DB47C22, 0x7BB431FEFB5B67B2),
950 951

  // packages/flutter_tools/test/data/intellij/plugins/Dart/lib/Dart.jar
952
  const Hash256(0x576E489D788A13DB, 0xBF40E4A39A3DAB37, 0x15CCF0002032E79C, 0xD260C69B29E06646),
953 954

  // packages/flutter_tools/test/data/intellij/plugins/flutter-intellij.jar
955
  const Hash256(0x4C67221E25626CB2, 0x3F94E1F49D34E4CF, 0x3A9787A514924FC5, 0x9EF1E143E5BC5690),
956 957 958 959 960


  // MISCELLANEOUS

  // dev/bots/serviceaccount.enc
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  const Hash256(0x1F19ADB4D80AFE8C, 0xE61899BA776B1A8D, 0xCA398C75F5F7050D, 0xFB0E72D7FBBBA69B),
962 963

  // dev/docs/favicon.ico
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  const Hash256(0x67368CA1733E933A, 0xCA3BC56EF0695012, 0xE862C371AD4412F0, 0x3EC396039C609965),
965 966

  // dev/snippets/assets/code_sample.png
967
  const Hash256(0xAB2211A47BDA001D, 0x173A52FD9C75EBC7, 0xE158942FFA8243AD, 0x2A148871990D4297),
968 969

  // dev/snippets/assets/code_snippet.png
970
  const Hash256(0xDEC70574DA46DFBB, 0xFA657A771F3E1FBD, 0xB265CFC6B2AA5FE3, 0x93BA4F325D1520BA),
971 972

  // packages/flutter_tools/static/Ahem.ttf
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  const Hash256(0x63D2ABD0041C3E3B, 0x4B52AD8D382353B5, 0x3C51C6785E76CE56, 0xED9DACAD2D2E31C4),
974 975
};

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Future<void> verifyNoBinaries(String workingDirectory, { Set<Hash256> legacyBinaries }) async {
  // Please do not add anything to the _legacyBinaries set above.
978
  // We have a policy of not checking in binaries into this repository.
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  // If you are adding/changing template images, use the flutter_template_images
  // package and a .img.tmpl placeholder instead.
  // If you have other binaries to add, please consult Hixie for advice.
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  assert(
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    _legacyBinaries
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      .expand<int>((Hash256 hash) => <int>[hash.a, hash.b, hash.c, hash.d])
985
      .reduce((int value, int element) => value ^ element) == 0x606B51C908B40BFA // Please do not modify this line.
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  );
987
  legacyBinaries ??= _legacyBinaries;
988
  if (!Platform.isWindows) { // TODO(ianh): Port this to Windows
989
    final List<File> files = await _gitFiles(workingDirectory, runSilently: false);
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    final List<String> problems = <String>[];
991
    for (final File file in files) {
992 993 994 995
      final Uint8List bytes = file.readAsBytesSync();
      try {
        utf8.decode(bytes);
      } on FormatException catch (error) {
996
        final Digest digest = sha256.convert(bytes);
997
        if (!legacyBinaries.contains(Hash256.fromDigest(digest)))
998
          problems.add('${file.path}:${error.offset}: file is not valid UTF-8');
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      }
    }
    if (problems.isNotEmpty) {
      exitWithError(<String>[
        ...problems,
        'All files in this repository must be UTF-8. In particular, images and other binaries',
        'must not be checked into this repository. This is because we are very sensitive to the',
        'size of the repository as it is distributed to all our developers. If you have a binary',
        'to which you need access, you should consider how to fetch it from another repository;',
        'for example, the "assets-for-api-docs" repository is used for images in API docs.',
      ]);
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    }
  }
}


// UTILITY FUNCTIONS

bool _listEquals<T>(List<T> a, List<T> b) {
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  assert(a != null);
  assert(b != null);
  if (a.length != b.length)
    return false;
  for (int index = 0; index < a.length; index += 1) {
    if (a[index] != b[index])
      return false;
  }
  return true;
}

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Future<List<File>> _gitFiles(String workingDirectory, {bool runSilently = true}) async {
  final EvalResult evalResult = await _evalCommand(
    'git', <String>['ls-files', '-z'],
    workingDirectory: workingDirectory,
    runSilently: runSilently,
  );
  if (evalResult.exitCode != 0) {
    exitWithError(<String>[
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      'git ls-files failed with exit code ${evalResult.exitCode}',
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      '${bold}stdout:$reset',
      evalResult.stdout,
      '${bold}stderr:$reset',
      evalResult.stderr,
    ]);
  }
  final List<String> filenames = evalResult
      .stdout
      .split('\x00');
  assert(filenames.last.isEmpty); // git ls-files gives a trailing blank 0x00
  filenames.removeLast();
  return filenames
      .map<File>((String filename) => File(path.join(workingDirectory, filename)))
      .toList();
}

Stream<File> _allFiles(String workingDirectory, String extension, { @required int minimumMatches }) async* {
  final Set<String> gitFileNamesSet = <String>{};
  gitFileNamesSet.addAll((await _gitFiles(workingDirectory)).map((File f) => path.canonicalize(f.absolute.path)));

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  assert(extension == null || !extension.startsWith('.'), 'Extension argument should not start with a period.');
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  final Set<FileSystemEntity> pending = <FileSystemEntity>{ Directory(workingDirectory) };
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  int matches = 0;
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  while (pending.isNotEmpty) {
    final FileSystemEntity entity = pending.first;
    pending.remove(entity);
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    if (path.extension(entity.path) == '.tmpl')
      continue;
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    if (entity is File) {
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      if (!gitFileNamesSet.contains(path.canonicalize(entity.absolute.path)))
        continue;
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      if (_isGeneratedPluginRegistrant(entity))
        continue;
      if (path.basename(entity.path) == 'flutter_export_environment.sh')
        continue;
      if (path.basename(entity.path) == 'gradlew.bat')
        continue;
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      if (path.basename(entity.path) == '.DS_Store')
        continue;
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      if (extension == null || path.extension(entity.path) == '.$extension') {
        matches += 1;
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        yield entity;
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      }
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    } else if (entity is Directory) {
      if (File(path.join(entity.path, '.dartignore')).existsSync())
        continue;
      if (path.basename(entity.path) == '.git')
        continue;
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      if (path.basename(entity.path) == '.idea')
        continue;
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      if (path.basename(entity.path) == '.gradle')
        continue;
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      if (path.basename(entity.path) == '.dart_tool')
        continue;
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      if (path.basename(entity.path) == '.idea')
        continue;
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      if (path.basename(entity.path) == 'build')
        continue;
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      pending.addAll(entity.listSync());
    }
  }
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  assert(matches >= minimumMatches, 'Expected to find at least $minimumMatches files with extension ".$extension" in "$workingDirectory", but only found $matches.');
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}

class EvalResult {
  EvalResult({
    this.stdout,
    this.stderr,
    this.exitCode = 0,
  });

  final String stdout;
  final String stderr;
  final int exitCode;
}

1114
// TODO(ianh): Refactor this to reuse the code in run_command.dart
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Future<EvalResult> _evalCommand(String executable, List<String> arguments, {
  @required String workingDirectory,
  Map<String, String> environment,
  bool skip = false,
  bool allowNonZeroExit = false,
1120
  bool runSilently = false,
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}) async {
  final String commandDescription = '${path.relative(executable, from: workingDirectory)} ${arguments.join(' ')}';
  final String relativeWorkingDir = path.relative(workingDirectory);
  if (skip) {
    printProgress('SKIPPING', relativeWorkingDir, commandDescription);
    return null;
  }
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  if (!runSilently) {
    printProgress('RUNNING', relativeWorkingDir, commandDescription);
  }
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  final Stopwatch time = Stopwatch()..start();
  final Process process = await Process.start(executable, arguments,
    workingDirectory: workingDirectory,
    environment: environment,
  );

  final Future<List<List<int>>> savedStdout = process.stdout.toList();
  final Future<List<List<int>>> savedStderr = process.stderr.toList();
  final int exitCode = await process.exitCode;
  final EvalResult result = EvalResult(
    stdout: utf8.decode((await savedStdout).expand<int>((List<int> ints) => ints).toList()),
    stderr: utf8.decode((await savedStderr).expand<int>((List<int> ints) => ints).toList()),
    exitCode: exitCode,
  );

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  if (!runSilently) {
    print('$clock ELAPSED TIME: $bold${prettyPrintDuration(time.elapsed)}$reset for $commandDescription in $relativeWorkingDir');
  }
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  if (exitCode != 0 && !allowNonZeroExit) {
    stderr.write(result.stderr);
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    exitWithError(<String>[
      '${bold}ERROR:$red Last command exited with $exitCode.$reset',
      '${bold}Command:$red $commandDescription$reset',
      '${bold}Relative working directory:$red $relativeWorkingDir$reset',
    ]);
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  }

  return result;
}

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Future<void> _checkConsumerDependencies() async {
  final ProcessResult result = await Process.run(flutter, <String>[
    'update-packages',
    '--transitive-closure',
    '--consumer-only',
  ]);
  if (result.exitCode != 0) {
    print(result.stdout);
    print(result.stderr);
    exit(result.exitCode);
  }
  final Set<String> dependencySet = <String>{};
  for (final String line in result.stdout.toString().split('\n')) {
    if (!line.contains('->')) {
      continue;
    }
    final List<String> parts = line.split('->');
    final String name = parts[0].trim();
    dependencySet.add(name);
  }
  final List<String> dependencies = dependencySet.toList()
    ..sort();
  final List<String> disallowed = <String>[];
  final StreamController<Digest> controller = StreamController<Digest>();
  final ByteConversionSink hasher = sha256.startChunkedConversion(controller.sink);
  for (final String dependency in dependencies) {
    hasher.add(utf8.encode(dependency));
    if (!kCorePackageAllowList.contains(dependency)) {
      disallowed.add(dependency);
    }
  }
  hasher.close();
  final Digest digest = await controller.stream.last;
  final String signature = base64.encode(digest.bytes);

  // Do not change this signature without following the directions in
  // dev/bots/allowlist.dart
1201
  const String kExpected = 'nkO7DCjvSMB6VKyw+V9MU46m3xFEk/oYSbmgAWqvbXE=';
1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219

  if (disallowed.isNotEmpty) {
    exitWithError(<String>[
      'Warning: transitive closure contained non-allowlisted packages:',
      '${disallowed..join(', ')}',
      'See dev/bots/allowlist.dart for instructions on how to update the package allowlist.',
    ]);
  }

  if (signature != kExpected) {
    exitWithError(<String>[
      'Warning: transitive closure sha256 does not match expected signature.',
      'See dev/bots/allowlist.dart for instructions on how to update the package allowlist.',
      '$signature != $kExpected',
    ]);
  }
}

1220 1221
Future<void> _runFlutterAnalyze(String workingDirectory, {
  List<String> options = const <String>[],
1222
}) async {
1223
  return runCommand(
1224
    flutter,
1225
    <String>['analyze', ...options],
1226 1227 1228 1229
    workingDirectory: workingDirectory,
  );
}

1230
final RegExp _importPattern = RegExp(r'''^\s*import (['"])package:flutter/([^.]+)\.dart\1''');
1231
final RegExp _importMetaPattern = RegExp(r'''^\s*import (['"])package:meta/meta\.dart\1''');
1232

1233
Future<Set<String>> _findFlutterDependencies(String srcPath, List<String> errors, { bool checkForMeta = false }) async {
1234
  return _allFiles(srcPath, 'dart', minimumMatches: 1)
1235 1236
    .map<Set<String>>((File file) {
      final Set<String> result = <String>{};
1237
      for (final String line in file.readAsLinesSync()) {
1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
        Match match = _importPattern.firstMatch(line);
        if (match != null)
          result.add(match.group(2));
        if (checkForMeta) {
          match = _importMetaPattern.firstMatch(line);
          if (match != null) {
            errors.add(
              '${file.path}\nThis package imports the ${yellow}meta$reset package.\n'
              'You should instead import the "foundation.dart" library.'
            );
          }
1249 1250
        }
      }
1251 1252 1253 1254 1255 1256 1257
      return result;
    })
    .reduce((Set<String> value, Set<String> element) {
      value ??= <String>{};
      value.addAll(element);
      return value;
    });
1258 1259 1260
}

List<T> _deepSearch<T>(Map<T, Set<T>> map, T start, [ Set<T> seen ]) {
1261 1262 1263
  if (map[start] == null)
    return null; // We catch these separately.

1264
  for (final T key in map[start]) {
1265 1266 1267 1268
    if (key == start)
      continue; // we catch these separately
    if (seen != null && seen.contains(key))
      return <T>[start, key];
1269
    final List<T> result = _deepSearch<T>(
1270 1271
      map,
      key,
1272 1273 1274 1275
      <T>{
        if (seen == null) start else ...seen,
        key,
      },
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    );
    if (result != null) {
      result.insert(0, start);
      // Only report the shortest chains.
      // For example a->b->a, rather than c->a->b->a.
      // Since we visit every node, we know the shortest chains are those
      // that start and end on the loop.
      if (result.first == result.last)
        return result;
    }
  }
  return null;
}

bool _isGeneratedPluginRegistrant(File file) {
  final String filename = path.basename(file.path);
  return !file.path.contains('.pub-cache')
      && (filename == 'GeneratedPluginRegistrant.java' ||
          filename == 'GeneratedPluginRegistrant.h' ||
1295
          filename == 'GeneratedPluginRegistrant.m' ||
1296 1297
          filename == 'generated_plugin_registrant.dart' ||
          filename == 'generated_plugin_registrant.h');
1298
}