dart2js: switch to use dart2js_info/info.dart

pkg/compiler/tool/library_size_split.dart

-// Copyright (c) 2015, 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.
-
-/// Command-line tool to show the size distribution of generated code among
-/// libraries. Libraries can be grouped using regular expressions. See
-/// [defaultGrouping] for an example.
-library compiler.tool.library_size_split;
-
-import 'dart:convert';
-import 'dart:io';
-import 'dart:math' show max;
-
-import 'package:compiler/src/info/info.dart';
-import 'package:yaml/yaml.dart';
-
-main(args) {
-  if (args.length < 1) {
-    print('usage: dart tool/library_size_split.dart '
-        'path-to-info.json [grouping.yaml]');
-    exit(1);
-  }
-
-  var filename = args[0];
-  var json = JSON.decode(new File(filename).readAsStringSync());
-  var info = AllInfo.parseFromJson(json);
-
-  var groupingText = args.length > 1
-      ? new File(args[1]).readAsStringSync() : defaultGrouping;
-  var groupingYaml = loadYaml(groupingText);
-  var groups = [];
-  for (var group in groupingYaml['groups']) {
-    groups.add(new _Group(group['name'],
-        new RegExp(group['regexp']),
-        group['cluster'] ?? 0));
-  }
-
-  var sizes = {};
-  for (LibraryInfo lib in info.libraries) {
-    groups.forEach((group) {
-      var match = group.matcher.firstMatch('${lib.uri}');
-      if (match != null) {
-        var name = group.name;
-        if (name == null && match.groupCount > 0) name = match.group(1);
-        if (name == null) name = match.group(0);
-        sizes.putIfAbsent(name, () => new _SizeEntry(name, group.cluster));
-        sizes[name].size += lib.size;
-      }
-    });
-  }
-
-  var all = sizes.keys.toList();
-  all.sort((a, b) => sizes[a].compareTo(sizes[b]));
-  var realTotal = info.program.size;
-  var longest = all.fold(0, (count, value) => max(count, value.length));
-  longest = max(longest, 'Program Size'.length);
-  var lastCluster = 0;
-  for (var name in all) {
-    var entry = sizes[name];
-    if (lastCluster < entry.cluster) {
-      print(' ' + ('-' * (longest + 18)));
-      lastCluster = entry.cluster;
-    }
-    var size = entry.size;
-    var percent = (size * 100 / realTotal).toStringAsFixed(2);
-    print(' ${_pad(name, longest + 1, right: true)}'
-          ' ${_pad(size, 8)} ${_pad(percent, 6)}%');
-  }
-  print(' ${_pad("Program Size", longest + 1, right: true)}'
-      ' ${_pad(realTotal, 8)} ${_pad(100, 6)}%');
-}
-
-/// A group defined in the configuration.
-class _Group {
-  /// Name of the group. May be null if the name is derived from the matcher. In
-  /// that case, the name would be group(1) of the matched expression if it
-  /// exist, or group(0) otherwise.
-  final String name;
-
-  /// Regular expression matching members of the group.
-  final RegExp matcher;
-
-  /// Index used to cluster groups together. Useful when the grouping
-  /// configuration describes some coarser groups than orders (e.g. summary of
-  /// packages would be in a different cluster than a summary of libraries).
-  final int cluster;
-
-  _Group(this.name, this.matcher, this.cluster);
-}
-
-class _SizeEntry {
-  final String name;
-  final int cluster;
-  int size = 0;
-
-  _SizeEntry(this.name, this.cluster);
-
-  int compareTo(_SizeEntry other) =>
-      cluster == other.cluster ? size - other.size : cluster - other.cluster;
-}
-
-_pad(value, n, {bool right: false}) {
-  var s = '$value';
-  if (s.length >= n) return s;
-  var pad = ' ' * (n - s.length);
-  return right ? '$s$pad' : '$pad$s';
-}
-
-/// Example grouping specification: a yaml format containing a list of
-/// group specifications. A group is specified by 3 parameters:
-///    - name: the name that will be shown in the table of results
-///    - regexp: a regexp used to match entries that belong to the group
-///    - cluster: a clustering index, the higher the value, the later it will be
-///    shown in the results.
-/// Both cluster and name are optional. If cluster is omitted, the default value
-/// is 0. If the name is omitted, it is extracted from the regexp, either as
-/// group(1) if it is available or group(0) otherwise.
-final defaultGrouping = """
-groups:
-- { name: "Total (excludes preambles, statics & consts)", regexp: ".*", cluster: 3}
-- { name: "Loose files", regexp: "file://.*", cluster: 2}
-- { name: "All packages", regexp: "package:.*", cluster: 2}
-- { name: "Core libs", regexp: "dart:.*", cluster: 2}
-# We omitted `name` to extract the group name from the regexp directly.
-# Here the name is the name of the package:
-- { regexp: "package:([^/]*)", cluster: 1}
-# Here the name is the url of the package and dart core libraries:
-- { regexp: "package:.*"}
-- { regexp: "dart:.*"}
-# Here the name is the relative path of loose files:
-- { regexp: "file://${Directory.current.path}/(.*)" }
-""";