Move mojo and mojom from mojo/public/dart to mojo/dart/packages

mojo/public/dart/mojom/lib/src/generate.dart

Index: mojo/public/dart/mojom/lib/src/generate.dart
diff --git a/mojo/public/dart/mojom/lib/src/generate.dart b/mojo/public/dart/mojom/lib/src/generate.dart
deleted file mode 100644
index 5657bd9fe5f8372245c20bfef7165620bb5313e8..0000000000000000000000000000000000000000
--- a/mojo/public/dart/mojom/lib/src/generate.dart
+++ /dev/null
@@ -1,414 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/// This library generates Mojo bindings for a Dart package.
-
-library generate;
-
-import 'dart:async';
-import 'dart:convert';
-import 'dart:developer' as dev;
-import 'dart:io';
-
-import 'package:mojom/src/utils.dart';
-import 'package:path/path.dart' as path;
-
-part 'mojom_finder.dart';
-
-class MojomGenerator {
-  static dev.Counter _genMs;
-  final bool _errorOnDuplicate;
-  final bool _dryRun;
-  final Directory _mojoSdk;
-
-  Map<String, String> _duplicateDetection;
-  int _generationMs;
-
-  MojomGenerator(this._mojoSdk,
-      {bool errorOnDuplicate: true, bool profile: false, bool dryRun: false})
-      : _errorOnDuplicate = errorOnDuplicate,
-        _dryRun = dryRun,
-        _generationMs = 0,
-        _duplicateDetection = new Map<String, String>() {
-    if (_genMs == null) {
-      _genMs = new dev.Counter("mojom generation",
-          "Time spent waiting for bindings generation script in ms.");
-      dev.Metrics.register(_genMs);
-    }
-  }
-
-  generate(PackageInfo info) async {
-    // Count the .mojom files, and find the modification time of the most
-    // recently modified one.
-    int mojomCount = info.mojomFiles.length;
-    DateTime newestMojomTime;
-    for (File mojom in info.mojomFiles) {
-      DateTime mojomTime = await getModificationTime(mojom);
-      if ((newestMojomTime == null) || newestMojomTime.isBefore(mojomTime)) {
-        newestMojomTime = mojomTime;
-      }
-    }
-
-    // Count the .mojom.dart files, and find the modification time of the
-    // least recently modified one.
-    List mojomDartInfo = await _findOldestMojomDart(info.packageDir);
-    DateTime oldestMojomDartTime = null;
-    int mojomDartCount = 0;
-    if (mojomDartInfo != null) {
-      oldestMojomDartTime = mojomDartInfo[0];
-      mojomDartCount = mojomDartInfo[1];
-    }
-
-    // If we don't have enough .mojom.dart files, or if a .mojom file is
-    // newer than the oldest .mojom.dart file, then regenerate.
-    if ((mojomDartCount < mojomCount) ||
-        _shouldRegenerate(newestMojomTime, oldestMojomDartTime)) {
-      for (File mojom in info.mojomFiles) {
-        await _generateForMojom(
-            mojom, info.importDir, info.packageDir, info.name);
-      }
-      // Delete any .mojom.dart files that are still older than mojomTime.
-      await _deleteOldMojomDart(info.packageDir, newestMojomTime);
-    }
-  }
-
-  /// Under [package]/lib, returns the oldest modification time for a
-  /// .mojom.dart file.
-  _findOldestMojomDart(Directory package) async {
-    int mojomDartCount = 0;
-    DateTime oldestModTime;
-    Directory libDir = new Directory(path.join(package.path, 'lib'));
-    if (!await libDir.exists()) return null;
-    await for (var file in libDir.list(recursive: true, followLinks: false)) {
-      if (file is! File) continue;
-      if (!isMojomDart(file.path)) continue;
-      DateTime modTime = (await file.stat()).modified;
-      if ((oldestModTime == null) || oldestModTime.isAfter(modTime)) {
-        oldestModTime = modTime;
-      }
-      mojomDartCount++;
-    }
-    return [oldestModTime, mojomDartCount];
-  }
-
-  // Delete .mojom.dart files under [package] that are [olderThanThis].
-  _deleteOldMojomDart(Directory package, DateTime olderThanThis) async {
-    Directory libDir = new Directory(path.join(package.path, 'lib'));
-    assert(await libDir.exists());
-    await for (var file in libDir.list(recursive: true, followLinks: false)) {
-      if (file is! File) continue;
-      if (!isMojomDart(file.path)) continue;
-      DateTime modTime = (await file.stat()).modified;
-      if (modTime.isBefore(olderThanThis)) {
-        log.warning("Deleting stale .mojom.dart: $file");
-        await file.delete();
-      }
-    }
-  }
-
-  /// If the .mojoms file or the newest .mojom is newer than the oldest
-  /// .mojom.dart, then regenerate everything.
-  bool _shouldRegenerate(DateTime mojomTime, DateTime mojomDartTime) {
-    return (mojomTime == null) ||
-        (mojomDartTime == null) ||
-        mojomTime.isAfter(mojomDartTime);
-  }
-
-  _runBindingsGeneration(String script, List<String> arguments) async {
-    var result;
-    var stopwatch = new Stopwatch()..start();
-    result = await Process.run(script, arguments);
-    stopwatch.stop();
-    _genMs.value += stopwatch.elapsedMilliseconds;
-    return result;
-  }
-
-  _generateForMojom(File mojom, Directory importDir, Directory destination,
-      String packageName) async {
-    if (!isMojom(mojom.path)) return;
-    log.info("_generateForMojom($mojom)");
-
-    final script = path.join(
-        _mojoSdk.path, 'tools', 'bindings', 'mojom_bindings_generator.py');
-    final sdkInc = path.normalize(path.join(_mojoSdk.path, '..', '..'));
-    final outputDir = await destination.createTemp();
-    final output = outputDir.path;
-    final arguments = [
-      '--use_bundled_pylibs',
-      '-g',
-      'dart',
-      '-o',
-      output,
-      // TODO(zra): Are other include paths needed?
-      '-I',
-      sdkInc,
-      '-I',
-      importDir.path,
-      mojom.path
-    ];
-
-    log.info('Generating $mojom');
-    log.info('$script ${arguments.join(" ")}');
-    log.info('dryRun = $_dryRun');
-    if (!_dryRun) {
-      final result = await _runBindingsGeneration(script, arguments);
-      if (result.exitCode != 0) {
-        log.info("bindings generation result = ${result.exitCode}");
-        await outputDir.delete(recursive: true);
-        throw new GenerationError("$script failed:\n"
-            "code: ${result.exitCode}\n"
-            "stderr: ${result.stderr}\n"
-            "stdout: ${result.stdout}");
-      } else {
-        log.info("bindings generation result = 0");
-      }
-
-      // Generated .mojom.dart is under $output/dart-pkg/$PACKAGE/lib/$X
-      // Move $X to |destination|/lib/$X.
-      // Throw an exception if $PACKGE != [packageName].
-      final generatedDirName = path.join(output, 'dart-pkg');
-      final generatedDir = new Directory(generatedDirName);
-      log.info("generatedDir= $generatedDir");
-      assert(await generatedDir.exists());
-      await for (var genpack in generatedDir.list()) {
-        if (genpack is! Directory) continue;
-        log.info("genpack = $genpack");
-        var libDir = new Directory(path.join(genpack.path, 'lib'));
-        var name = path.relative(genpack.path, from: generatedDirName);
-        log.info("Found generated lib dir: $libDir");
-
-        if (packageName != name) {
-          await outputDir.delete(recursive: true);
-          throw new GenerationError(
-              "Tried to generate for package $name in package $packageName");
-        }
-
-        var copyDest = new Directory(path.join(destination.path, 'lib'));
-        log.info("Copy $libDir to $copyDest");
-        await _copyBindings(copyDest, libDir);
-      }
-
-      await outputDir.delete(recursive: true);
-    }
-  }
-
-  /// Searches for .mojom.dart files under [sourceDir] and copies them to
-  /// [destDir].
-  _copyBindings(Directory destDir, Directory sourceDir) async {
-    var sourceList = sourceDir.list(recursive: true, followLinks: false);
-    await for (var mojom in sourceList) {
-      if (mojom is! File) continue;
-      if (!isMojomDart(mojom.path)) continue;
-      log.info("Found $mojom");
-
-      final relative = path.relative(mojom.path, from: sourceDir.path);
-      final dest = path.join(destDir.path, relative);
-      final destDirectory = new Directory(path.dirname(dest));
-
-      if (_errorOnDuplicate && _duplicateDetection.containsKey(dest)) {
-        String original = _duplicateDetection[dest];
-        throw new GenerationError(
-            'Conflict: Both ${original} and ${mojom.path} supply ${dest}');
-      }
-      _duplicateDetection[dest] = mojom.path;
-
-      log.info('Copying $mojom to $dest');
-      if (!_dryRun) {
-        final File source = new File(mojom.path);
-        final File destFile = new File(dest);
-        if (await destFile.exists()) {
-          await destFile.delete();
-        }
-        log.info("Ensuring $destDirectory exists");
-        await destDirectory.create(recursive: true);
-        await source.copy(dest);
-        await markFileReadOnly(dest);
-      }
-    }
-  }
-}
-
-/// Given the location of the Mojo SDK and a root directory from which to begin
-/// a search. Find .mojom files, and generate bindings for the relevant
-/// packages.
-class TreeGenerator {
-  final MojomGenerator _generator;
-  final Directory _mojoSdk;
-  final Directory _mojomRootDir;
-  final Directory _dartRootDir;
-  final List<String> _skip;
-  final bool _dryRun;
-
-  Set<String> _processedPackages;
-
-  int errors;
-
-  TreeGenerator(
-      Directory mojoSdk, this._mojomRootDir, this._dartRootDir, this._skip,
-      {bool dryRun: false})
-      : _mojoSdk = mojoSdk,
-        _dryRun = dryRun,
-        _generator = new MojomGenerator(mojoSdk, dryRun: dryRun),
-        _processedPackages = new Set<String>(),
-        errors = 0;
-
-  generate() async {
-    var mojomFinder = new MojomFinder(_mojomRootDir, _dartRootDir, _skip);
-    List<PackageInfo> packageInfos = await mojomFinder.find();
-    for (PackageInfo info in packageInfos) {
-      await _runGenerate(info);
-    }
-  }
-
-  _runGenerate(PackageInfo info) async {
-    try {
-      log.info('Generating bindings for ${info.name}');
-      await _generator.generate(info);
-      log.info('Done generating bindings for ${info.name}');
-    } on GenerationError catch (e) {
-      log.severe('Bindings generation failed for package ${info.name}: $e');
-      errors += 1;
-    }
-  }
-
-  bool _shouldSkip(File f) => containsPrefix(f.path, _skip);
-}
-
-/// Given the root of a directory tree to check, and the root of a directory
-/// tree containing the canonical generated bindings, checks that the files
-/// match, and recommends actions to take in case they don't. The canonical
-/// directory should contain a subdirectory for each package that might be
-/// encountered while traversing the directory tree being checked.
-class TreeChecker {
-  final Directory _mojoSdk;
-  final Directory _mojomRootDir;
-  final Directory _dartRootDir;
-  final Directory _canonical;
-  final List<String> _skip;
-  int _errors;
-
-  TreeChecker(this._mojoSdk, this._mojomRootDir, this._dartRootDir,
-      this._canonical, this._skip)
-      : _errors = 0;
-
-  check() async {
-    // Generate missing .mojoms files if needed.
-    var mojomFinder = new MojomFinder(_mojomRootDir, _dartRootDir, _skip);
-    List<PackageInfo> packageInfos = await mojomFinder.find();
-
-    for (PackageInfo info in packageInfos) {
-      log.info("Checking package at ${info.packageDir}");
-      await _checkAll(info.packageDir);
-      await _checkSame(info.packageDir);
-    }
-
-    // If there were multiple mismatches, explain how to regenerate the bindings
-    // for the whole tree.
-    if (_errors > 1) {
-      String dart = makeRelative(Platform.executable);
-      String packRoot = (Platform.packageRoot == "")
-          ? ""
-          : "-p " + makeRelative(Platform.packageRoot);
-      String scriptPath = makeRelative(path.fromUri(Platform.script));
-      String mojoSdk = makeRelative(_mojoSdk.path);
-      String root = makeRelative(_mojomRootDir.path);
-      String dartRoot = makeRelative(_dartRootDir.path);
-      String skips = _skip.map((s) => "-s " + makeRelative(s)).join(" ");
-      stderr.writeln('It looks like there were multiple problems. '
-          'You can run the following command to regenerate bindings for your '
-          'whole tree:\n'
-          '\t$dart $packRoot $scriptPath gen -m $mojoSdk -r $root -o $dartRoot '
-          '$skips');
-    }
-  }
-
-  int get errors => _errors;
-
-  // Check that the files are the same.
-  _checkSame(Directory package) async {
-    Directory libDir = new Directory(path.join(package.path, 'lib'));
-    await for (var entry in libDir.list(recursive: true, followLinks: false)) {
-      if (entry is! File) continue;
-      if (!isMojomDart(entry.path)) continue;
-
-      String relPath = path.relative(entry.path, from: package.parent.path);
-      File canonicalFile = new File(path.join(_canonical.path, relPath));
-      if (!await canonicalFile.exists()) {
-        log.info("No canonical file for $entry");
-        continue;
-      }
-
-      log.info("Comparing $entry with $canonicalFile");
-      int fileComparison = await compareFiles(entry, canonicalFile);
-      if (fileComparison != 0) {
-        String entryPath = makeRelative(entry.path);
-        String canonicalPath = makeRelative(canonicalFile.path);
-        if (fileComparison > 0) {
-          stderr.writeln('The generated file:\n\t$entryPath\n'
-              'is newer thanthe canonical file\n\t$canonicalPath\n,'
-              'and they are different. Regenerate canonical files?');
-        } else {
-          String dart = makeRelative(Platform.executable);
-          String packRoot = (Platform.packageRoot == "")
-              ? ""
-              : "-p " + makeRelative(Platform.packageRoot);
-          String root = makeRelative(_mojomRootDir.path);
-          String packagePath = makeRelative(package.path);
-          String scriptPath = makeRelative(path.fromUri(Platform.script));
-          String mojoSdk = makeRelative(_mojoSdk.path);
-          String skips = _skip.map((s) => "-s " + makeRelative(s)).join(" ");
-          stderr.writeln('For the package: $packagePath\n'
-              'The generated file:\n\t$entryPath\n'
-              'is older than the canonical file:\n\t$canonicalPath\n'
-              'and they are different. Regenerate by running:\n'
-              '\t$dart $packRoot $scriptPath single -m $mojoSdk -r $root '
-              '-p $packagePath $skips');
-        }
-        _errors++;
-        return;
-      }
-    }
-  }
-
-  // Check that every .mojom.dart in the canonical package is also in the
-  // package we are checking.
-  _checkAll(Directory package) async {
-    String packageName = path.relative(package.path, from: package.parent.path);
-    String canonicalPackagePath =
-        path.join(_canonical.path, packageName, 'lib');
-    Directory canonicalPackage = new Directory(canonicalPackagePath);
-    if (!await canonicalPackage.exists()) return;
-
-    var canonicalPackages =
-        canonicalPackage.list(recursive: true, followLinks: false);
-    await for (var entry in canonicalPackages) {
-      if (entry is! File) continue;
-      if (!isMojomDart(entry.path)) continue;
-
-      String relPath = path.relative(entry.path, from: canonicalPackage.path);
-      File genFile = new File(path.join(package.path, 'lib', relPath));
-      log.info("Checking that $genFile exists");
-      if (!await genFile.exists()) {
-        String dart = makeRelative(Platform.executable);
-        String packRoot = (Platform.packageRoot == "")
-            ? ""
-            : "-p " + makeRelative(Platform.packageRoot);
-        String root = makeRelative(_mojomRootDir.path);
-        String genFilePath = makeRelative(genFile.path);
-        String packagePath = makeRelative(package.path);
-        String scriptPath = makeRelative(path.fromUri(Platform.script));
-        String mojoSdk = makeRelative(_mojoSdk.path);
-        String skips = _skip.map((s) => "-s " + makeRelative(s)).join(" ");
-        stderr.writeln('The generated file:\n\t$genFilePath\n'
-            'is needed but does not exist. Run the command\n'
-            '\t$dart $packRoot $scriptPath single -m $mojoSdk -r $root '
-            '-p $packagePath $skips');
-        _errors++;
-        return;
-      }
-    }
-  }
-
-  bool _shouldSkip(File f) => containsPrefix(f.path, _skip);
-}