dart2js: switch to use dart2js_info/info.dart

pkg/compiler/tool/code_deps.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 query for code dependencies.
-library compiler.tool.code_deps;
-
-import 'dart:collection';
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:compiler/src/info/info.dart';
-import 'graph.dart';
-import 'util.dart';
-
-main(args) {
-  if (args.length < 2) {
-    print('usage: dart tool/code_deps.dart path-to-info.json <query>');
-    print('   where <query> can be:');
-    print('     - some_path elementA elementB');
-    // TODO(sigmund): add other queries, such as 'all_paths'.
-    exit(1);
-  }
-
-  var json = JSON.decode(new File(args[0]).readAsStringSync());
-  var info = AllInfo.parseFromJson(json);
-  var graph = graphFromInfo(info);
-
-  var queryName = args[1];
-  if (queryName == 'some_path') {
-    if (args.length < 4) {
-      print('missing arguments for `some_path`');
-      exit(1);
-    }
-    var source =
-        info.functions.firstWhere(_longNameMatcher(new RegExp(args[2])),
-        orElse: () => null);
-    var target =
-        info.functions.firstWhere(_longNameMatcher(new RegExp(args[3])),
-        orElse: () => null);
-    print('query: some_path');
-    if (source == null) {
-      print("source '${args[2]}' not found in '${args[0]}'");
-      exit(1);
-    }
-    print('source: ${longName(source)}');
-    if (target == null) {
-      print("target '${args[3]}' not found in '${args[0]}'");
-      exit(1);
-    }
-    print('target: ${longName(target)}');
-    var path = new SomePathQuery(source, target).run(graph);
-    if (path.isEmpty) {
-      print('result: no path found');
-    } else {
-      print('result:');
-      for (int i = 0; i < path.length; i++) {
-        print('  $i. ${longName(path[i])}');
-      }
-    }
-  } else {
-    print('unrecognized query: $queryName');
-  }
-}
-
-/// A query supported by this tool.
-abstract class Query {
-  run(Graph<Info> graph);
-}
-
-/// Query that searches for a single path between two elements.
-class SomePathQuery {
-  /// The info associated with the source element.
-  Info source;
-
-  /// The info associated with the target element.
-  Info target;
-
-  SomePathQuery(this.source, this.target);
-
-  List<Info> run(Graph<Info> graph) {
-    var seen = {source: null};
-    var queue = new Queue();
-    queue.addLast(source);
-    while (queue.isNotEmpty) {
-      var node = queue.removeFirst();
-      if (identical(node, target)) {
-        var result = new Queue();
-        while (node != null) {
-          result.addFirst(node);
-          node = seen[node];
-        }
-        return result.toList();
-      }
-      for (var neighbor in graph.targetsOf(node)) {
-        if (seen.containsKey(neighbor)) continue;
-        seen[neighbor] = node;
-        queue.addLast(neighbor);
-      }
-    }
-    return [];
-  }
-}
-
-_longNameMatcher(RegExp regexp) => (e) => regexp.hasMatch(longName(e));