| #!/usr/bin/env dart |
| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:io'; |
| import 'package:kernel/kernel.dart'; |
| import 'package:kernel/src/tool/command_line_util.dart'; |
| |
| void usage() { |
| print("Enumerates the different node types in the provided dill file"); |
| print("and counts them."); |
| print(""); |
| print("Usage: dart <script> dillFile.dill"); |
| print("The given argument should be an existing file"); |
| print("that is valid to load as a dill file."); |
| exit(1); |
| } |
| |
| main(List<String> args) { |
| CommandLineHelper.requireExactlyOneArgument(args, usage, |
| requireFileExists: true); |
| Component component = CommandLineHelper.tryLoadDill(args[0]); |
| TypeCounter counter = new TypeCounter(); |
| component.accept(counter); |
| counter.printStats(); |
| } |
| |
| class TypeCounter extends RecursiveVisitor { |
| Map<String, int> _typeCounts = <String, int>{}; |
| defaultNode(Node node) { |
| String key = node.runtimeType.toString(); |
| _typeCounts[key] = (_typeCounts[key] ??= 0) + 1; |
| super.defaultNode(node); |
| } |
| |
| printStats() { |
| List<List<Object>> data = []; |
| _typeCounts.forEach((type, count) { |
| data.add([type, count]); |
| }); |
| data.sort((a, b) { |
| int aCount = a[1] as int; |
| int bCount = b[1] as int; |
| return bCount - aCount; |
| }); |
| for (var entry in data) { |
| print("${entry[0]}: ${entry[1]}"); |
| } |
| } |
| } |