Johnni Winther
4ff04f641b
Change-Id: Icdcc648f42393b28daf648f752e3b4d61f51aa10 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212043 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com>
54 lines
1.5 KiB
Dart
Executable File
54 lines
1.5 KiB
Dart
Executable File
#!/usr/bin/env dart
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// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:io';
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import 'package:kernel/kernel.dart';
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import 'package:kernel/src/tool/command_line_util.dart';
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void usage() {
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print("Enumerates the different node types in the provided dill file");
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print("and counts them.");
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print("");
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print("Usage: dart <script> dillFile.dill");
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print("The given argument should be an existing file");
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print("that is valid to load as a dill file.");
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exit(1);
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}
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void main(List<String> args) {
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CommandLineHelper.requireExactlyOneArgument(args, usage,
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requireFileExists: true);
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Component component = CommandLineHelper.tryLoadDill(args[0]);
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TypeCounter counter = new TypeCounter();
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component.accept(counter);
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counter.printStats();
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}
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class TypeCounter extends RecursiveVisitor {
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Map<String, int> _typeCounts = <String, int>{};
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@override
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void defaultNode(Node node) {
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String key = node.runtimeType.toString();
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_typeCounts[key] = (_typeCounts[key] ??= 0) + 1;
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super.defaultNode(node);
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}
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void printStats() {
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List<List<Object>> data = [];
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_typeCounts.forEach((type, count) {
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data.add([type, count]);
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});
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data.sort((a, b) {
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int aCount = a[1] as int;
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int bCount = b[1] as int;
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return bCount - aCount;
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});
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for (var entry in data) {
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print("${entry[0]}: ${entry[1]}");
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}
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}
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}
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