dart2js: switch to use dart2js_info/info.dart

pkg/compiler/lib/src/info/info.dart

Index: pkg/compiler/lib/src/info/info.dart
diff --git a/pkg/compiler/lib/src/info/info.dart b/pkg/compiler/lib/src/info/info.dart
deleted file mode 100644
index 6a6f747ef7947daccbb3a15331eb78799c800353..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/info/info.dart
+++ /dev/null
@@ -1,745 +0,0 @@
-// 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.
-
-/// Data collected by the dump-info task.
-library compiler.src.lib.info;
-
-// Note: this file intentionally doesn't import anything from the compiler. That
-// should make it easier for tools to depend on this library. The idea is that
-// by using this library, tools can consume the information in the same way it
-// is produced by the compiler.
-// TODO(sigmund): make this a proper public API (export this explicitly at the
-// lib folder level.)
-
-/// Common interface to many pieces of information generated by the compiler.
-abstract class Info {
-  /// An identifier for the kind of information.
-  InfoKind get kind;
-
-  /// Name of the element associated with this info.
-  String name;
-
-  /// An id to uniquely identify this info among infos of the same [kind].
-  int get id;
-
-  /// A globally unique id combining [kind] and [id] together.
-  String get serializedId;
-
-  /// Id used by the compiler when instrumenting code for code coverage.
-  // TODO(sigmund): It would be nice if we could use the same id for
-  // serialization and for coverage. Could we unify them?
-  String coverageId;
-
-  /// Bytes used in the generated code for the corresponding element.
-  int size;
-
-  /// Info of the enclosing element.
-  Info parent;
-
-  /// Serializes the information into a JSON format.
-  // TODO(sigmund): refactor and put toJson outside the class, so we can have 2
-  // different serializer/deserializers at once.
-  Map toJson();
-
-  void accept(InfoVisitor visitor);
-}
-
-/// Common information used for most kind of elements.
-// TODO(sigmund): add more:
-//  - inputSize: bytes used in the Dart source program
-abstract class BasicInfo implements Info {
-  final InfoKind kind;
-  final int id;
-  String coverageId;
-  int size;
-  Info parent;
-
-  String get serializedId => '${_kindToString(kind)}/$id';
-
-  String name;
-
-  /// If using deferred libraries, where the element associated with this info
-  /// is generated.
-  OutputUnitInfo outputUnit;
-
-  BasicInfo(this.kind, this.id, this.name, this.outputUnit, this.size,
-      this.coverageId);
-
-  BasicInfo._fromId(String serializedId)
-     : kind = _kindFromSerializedId(serializedId),
-       id = _idFromSerializedId(serializedId);
-
-  Map toJson() {
-    var res = {
-      'id': serializedId,
-      'kind': _kindToString(kind),
-      'name': name,
-      'size': size,
-    };
-    // TODO(sigmund): Omit this also when outputUnit.id == 0 (most code is in
-    // the main output unit by default).
-    if (outputUnit != null) res['outputUnit'] = outputUnit.serializedId;
-    if (coverageId != null) res['coverageId'] = coverageId;
-    if (parent != null) res['parent'] = parent.serializedId;
-    return res;
-  }
-
-  String toString() => '$serializedId $name [$size]';
-}
-
-/// Info associated with elements containing executable code (like fields and
-/// methods)
-abstract class CodeInfo implements Info {
-  /// How does this function or field depend on others.
-  final List<DependencyInfo> uses = <DependencyInfo>[];
-}
-
-
-/// The entire information produced while compiling a program.
-class AllInfo {
-  /// Summary information about the program.
-  ProgramInfo program;
-
-  /// Information about each library processed by the compiler.
-  List<LibraryInfo> libraries = <LibraryInfo>[];
-
-  /// Information about each function (includes methods and getters in any
-  /// library)
-  List<FunctionInfo> functions = <FunctionInfo>[];
-
-  /// Information about type defs in the program.
-  List<TypedefInfo> typedefs = <TypedefInfo>[];
-
-  /// Information about each class (in any library).
-  List<ClassInfo> classes = <ClassInfo>[];
-
-  /// Information about fields (in any class).
-  List<FieldInfo> fields = <FieldInfo>[];
-
-  /// Information about output units (should be just one entry if not using
-  /// deferred loading).
-  List<OutputUnitInfo> outputUnits = <OutputUnitInfo>[];
-
-  /// Details about all deferred imports and what files would be loaded when the
-  /// import is resolved.
-  // TODO(sigmund): use a different format for dump-info. This currently emits
-  // the same map that is created for the `--deferred-map` flag.
-  Map<String, Map<String, dynamic>> deferredFiles;
-
-  /// A new representation of dependencies form one info to another. An entry in
-  /// this map indicates that an Info depends on another (e.g. a function
-  /// invokes another). Please note that the data in this field might not be
-  /// accurate yet (this is work in progress).
-  Map<Info, List<Info>> dependencies = {};
-
-  /// Major version indicating breaking changes in the format. A new version
-  /// means that an old deserialization algorithm will not work with the new
-  /// format.
-  final int version = 3;
-
-  /// Minor version indicating non-breaking changes in the format. A change in
-  /// this version number means that the json parsing in this library from a
-  /// previous will continue to work after the change. This is typically
-  /// increased when adding new entries to the file format.
-  // Note: the dump-info.viewer app was written using a json parser version 3.2.
-  final int minorVersion = 5;
-
-  AllInfo();
-
-  static AllInfo parseFromJson(Map map) => new _ParseHelper().parseAll(map);
-
-  Map _listAsJsonMap(List<Info> list) {
-    var map = <String, Map>{};
-    for (var info in list) {
-      map['${info.id}'] = info.toJson();
-    }
-    return map;
-  }
-
-  Map _extractHoldingInfo() {
-    var map = <String, List>{};
-    void helper(CodeInfo info) {
-      if (info.uses.isEmpty) return;
-      map[info.serializedId] = info.uses.map((u) => u.toJson()).toList();
-    }
-    functions.forEach(helper);
-    fields.forEach(helper);
-    return map;
-  }
-
-  Map _extractDependencies() {
-    var map = <String, List>{};
-    dependencies.forEach((k, v) {
-      map[k.serializedId] = v.map((i) => i.serializedId).toList();
-    });
-    return map;
-  }
-
-  Map toJson() => {
-        'elements': {
-          'library': _listAsJsonMap(libraries),
-          'class': _listAsJsonMap(classes),
-          'function': _listAsJsonMap(functions),
-          'typedef': _listAsJsonMap(typedefs),
-          'field': _listAsJsonMap(fields),
-        },
-        'holding': _extractHoldingInfo(),
-        'dependencies': _extractDependencies(),
-        'outputUnits': outputUnits.map((u) => u.toJson()).toList(),
-        'dump_version': version,
-        'deferredFiles': deferredFiles,
-        'dump_minor_version': '$minorVersion',
-        // TODO(sigmund): change viewer to accept an int?
-        'program': program.toJson(),
-      };
-
-  void accept(InfoVisitor visitor) => visitor.visitAll(this);
-}
-
-class ProgramInfo {
-  int size;
-  String dart2jsVersion;
-  DateTime compilationMoment;
-  Duration compilationDuration;
-  // TODO(sigmund): use Duration.
-  int toJsonDuration;
-  int dumpInfoDuration;
-  bool noSuchMethodEnabled;
-  bool minified;
-
-  ProgramInfo(
-      {this.size,
-      this.dart2jsVersion,
-      this.compilationMoment,
-      this.compilationDuration,
-      this.toJsonDuration,
-      this.dumpInfoDuration,
-      this.noSuchMethodEnabled,
-      this.minified});
-
-  Map toJson() => {
-        'size': size,
-        'dart2jsVersion': dart2jsVersion,
-        'compilationMoment': '$compilationMoment',
-        'compilationDuration': '${compilationDuration}',
-        'toJsonDuration': toJsonDuration,
-        'dumpInfoDuration': '$dumpInfoDuration',
-        'noSuchMethodEnabled': noSuchMethodEnabled,
-        'minified': minified,
-      };
-
-  void accept(InfoVisitor visitor) => visitor.visitProgram(this);
-}
-
-// TODO(sigmund): add unit tests.
-class _ParseHelper {
-  Map<String, Info> registry = {};
-
-  AllInfo parseAll(Map json) {
-    var result = new AllInfo();
-    var elements = json['elements'];
-    result.libraries.addAll(elements['library'].values.map(parseLibrary));
-    result.classes.addAll(elements['class'].values.map(parseClass));
-    result.functions.addAll(elements['function'].values.map(parseFunction));
-    result.fields.addAll(elements['field'].values.map(parseField));
-    result.typedefs.addAll(elements['typedef'].values.map(parseTypedef));
-
-    var idMap = {};
-    for (var f in result.functions) {
-      idMap[f.serializedId] = f;
-    }
-    for (var f in result.fields) {
-      idMap[f.serializedId] = f;
-    }
-
-    json['holding'].forEach((k, deps) {
-      var src = idMap[k];
-      assert (src != null);
-      for (var dep in deps) {
-        var target = idMap[dep['id']];
-        assert (target != null);
-        src.uses.add(new DependencyInfo(target, dep['mask']));
-      }
-    });
-
-    json['dependencies']?.forEach((k, deps) {
-      result.dependencies[idMap[k]] = deps.map((d) => idMap[d]).toList();
-    });
-
-    result.program = parseProgram(json['program']);
-    // todo: version, etc
-    return result;
-  }
-
-  LibraryInfo parseLibrary(Map json) {
-    LibraryInfo result = parseId(json['id']);
-    result..name = json['name']
-        ..uri = Uri.parse(json['canonicalUri'])
-        ..outputUnit = parseId(json['outputUnit'])
-        ..size = json['size'];
-    for (var child in json['children'].map(parseId)) {
-      if (child is FunctionInfo) {
-        result.topLevelFunctions.add(child);
-      } else if (child is FieldInfo) {
-        result.topLevelVariables.add(child);
-      } else if (child is ClassInfo) {
-        result.classes.add(child);
-      } else {
-        assert(child is TypedefInfo);
-        result.typedefs.add(child);
-      }
-    }
-    return result;
-  }
-
-  ClassInfo parseClass(Map json) {
-    ClassInfo result = parseId(json['id']);
-    result..name = json['name']
-        ..parent = parseId(json['parent'])
-        ..outputUnit = parseId(json['outputUnit'])
-        ..size = json['size']
-        ..isAbstract = json['modifiers']['abstract'] == true;
-    assert(result is ClassInfo);
-    for (var child in json['children'].map(parseId)) {
-      if (child is FunctionInfo) {
-        result.functions.add(child);
-      } else {
-        assert(child is FieldInfo);
-        result.fields.add(child);
-      }
-    }
-    return result;
-  }
-
-  FieldInfo parseField(Map json) {
-    FieldInfo result = parseId(json['id']);
-    return result..name = json['name']
-      ..parent = parseId(json['parent'])
-      ..coverageId = json['coverageId']
-      ..outputUnit = parseId(json['outputUnit'])
-      ..size = json['size']
-      ..type = json['type']
-      ..inferredType = json['inferredType']
-      ..code = json['code']
-      ..closures = json['children'].map(parseId).toList();
-  }
-
-  TypedefInfo parseTypedef(Map json) {
-    TypedefInfo result = parseId(json['id']);
-    return result..name = json['name']
-      ..parent = parseId(json['parent'])
-      ..type = json['type']
-      ..size = 0;
-  }
-
-  ProgramInfo parseProgram(Map json) =>
-      new ProgramInfo()..size = json['size'];
-
-  FunctionInfo parseFunction(Map json) {
-    FunctionInfo result = parseId(json['id']);
-    return result..name = json['name']
-      ..parent = parseId(json['parent'])
-      ..coverageId = json['coverageId']
-      ..outputUnit = parseId(json['outputUnit'])
-      ..size = json['size']
-      ..type = json['type']
-      ..returnType = json['returnType']
-      ..inferredReturnType = json['inferredReturnType']
-      ..parameters = json['parameters'].map(parseParameter).toList()
-      ..code = json['code']
-      ..sideEffects = json['sideEffects']
-      ..modifiers = parseModifiers(json['modifiers'])
-      ..closures = json['children'].map(parseId).toList();
-  }
-
-  ParameterInfo parseParameter(Map json) =>
-      new ParameterInfo(json['name'], json['type'], json['declaredType']);
-
-  FunctionModifiers parseModifiers(Map<String, bool> json) {
-    return new FunctionModifiers(
-        isStatic: json['static'] == true,
-        isConst: json['const'] == true,
-        isFactory: json['factory'] == true,
-        isExternal: json['external'] == true);
-  }
-
-  Info parseId(String serializedId) => registry.putIfAbsent(serializedId, () {
-    if (serializedId == null) {
-      return null;
-    } else if (serializedId.startsWith('function/')) {
-      return new FunctionInfo._(serializedId);
-    } else if (serializedId.startsWith('library/')) {
-      return new LibraryInfo._(serializedId);
-    } else if (serializedId.startsWith('class/')) {
-      return new ClassInfo._(serializedId);
-    } else if (serializedId.startsWith('field/')) {
-      return new FieldInfo._(serializedId);
-    } else if (serializedId.startsWith('typedef/')) {
-      return new TypedefInfo._(serializedId);
-    } else if (serializedId.startsWith('outputUnit/')) {
-      return new OutputUnitInfo._(serializedId);
-    }
-    assert(false);
-  });
-}
-
-/// Info associated with a library element.
-class LibraryInfo extends BasicInfo {
-  /// Canonical uri that identifies the library.
-  Uri uri;
-
-  /// Top level functions defined within the library.
-  final List<FunctionInfo> topLevelFunctions = <FunctionInfo>[];
-
-  /// Top level fields defined within the library.
-  final List<FieldInfo> topLevelVariables = <FieldInfo>[];
-
-  /// Classes defined within the library.
-  final List<ClassInfo> classes = <ClassInfo>[];
-
-  /// Typedefs defined within the library.
-  final List<TypedefInfo> typedefs = <TypedefInfo>[];
-
-  static int _id = 0;
-
-  /// Whether there is any information recorded for this library.
-  bool get isEmpty =>
-      topLevelFunctions.isEmpty && topLevelVariables.isEmpty && classes.isEmpty;
-
-  LibraryInfo(String name, this.uri, OutputUnitInfo outputUnit, int size)
-      : super(InfoKind.library, _id++, name, outputUnit, size, null);
-
-  LibraryInfo._(String serializedId) : super._fromId(serializedId);
-
-  Map toJson() => super.toJson()
-    ..addAll({
-      'children': []
-        ..addAll(topLevelFunctions.map((f) => f.serializedId))
-        ..addAll(topLevelVariables.map((v) => v.serializedId))
-        ..addAll(classes.map((c) => c.serializedId))
-        ..addAll(typedefs.map((t) => t.serializedId)),
-      'canonicalUri': '$uri',
-    });
-
-  void accept(InfoVisitor visitor) => visitor.visitLibrary(this);
-}
-
-/// Information about an output unit. Normally there is just one for the entire
-/// program unless the application uses deferred imports, in which case there
-/// would be an additional output unit per deferred chunk.
-class OutputUnitInfo extends BasicInfo {
-  static int _ids = 0;
-  OutputUnitInfo(String name, int size)
-      : super(InfoKind.outputUnit, _ids++, name, null, size, null);
-
-  OutputUnitInfo._(String serializedId) : super._fromId(serializedId);
-
-  void accept(InfoVisitor visitor) => visitor.visitOutput(this);
-}
-
-/// Information about a class element.
-class ClassInfo extends BasicInfo {
-  /// Whether the class is abstract.
-  bool isAbstract;
-
-  // TODO(sigmund): split static vs instance vs closures
-  /// Functions (static or instance) defined in the class.
-  final List<FunctionInfo> functions = <FunctionInfo>[];
-
-  /// Fields defined in the class.
-  // TODO(sigmund): currently appears to only be populated with instance fields,
-  // but this should be fixed.
-  final List<FieldInfo> fields = <FieldInfo>[];
-  static int _ids = 0;
-
-  ClassInfo(
-      {String name, this.isAbstract, OutputUnitInfo outputUnit, int size: 0})
-      : super(InfoKind.clazz, _ids++, name, outputUnit, size, null);
-
-  ClassInfo._(String serializedId) : super._fromId(serializedId);
-
-  Map toJson() => super.toJson()
-    ..addAll({
-      // TODO(sigmund): change format, include only when abstract is true.
-      'modifiers': {'abstract': isAbstract},
-      'children': []
-        ..addAll(fields.map((f) => f.serializedId))
-        ..addAll(functions.map((m) => m.serializedId))
-    });
-
-  void accept(InfoVisitor visitor) => visitor.visitClass(this);
-}
-
-/// Information about a field element.
-class FieldInfo extends BasicInfo with CodeInfo {
-  /// The type of the field.
-  String type;
-
-  /// The type inferred by dart2js's whole program analysis
-  String inferredType;
-
-  /// Nested closures seen in the field initializer.
-  List<FunctionInfo> closures;
-
-  /// The actual generated code for the field.
-  String code;
-
-  static int _ids = 0;
-  FieldInfo(
-      {String name,
-      String coverageId,
-      int size: 0,
-      this.type,
-      this.inferredType,
-      this.closures,
-      this.code,
-      OutputUnitInfo outputUnit})
-      : super(InfoKind.field, _ids++, name, outputUnit, size, coverageId);
-
-  FieldInfo._(String serializedId) : super._fromId(serializedId);
-
-  Map toJson() => super.toJson()
-    ..addAll({
-      'children': closures.map((i) => i.serializedId).toList(),
-      'inferredType': inferredType,
-      'code': code,
-      'type': type,
-    });
-
-  void accept(InfoVisitor visitor) => visitor.visitField(this);
-}
-
-/// Information about a typedef declaration.
-class TypedefInfo extends BasicInfo {
-  /// The declared type.
-  String type;
-
-  static int _ids = 0;
-  TypedefInfo(String name, this.type, OutputUnitInfo outputUnit)
-      : super(InfoKind.typedef, _ids++, name, outputUnit, 0, null);
-
-  TypedefInfo._(String serializedId) : super._fromId(serializedId);
-
-  Map toJson() => super.toJson()..['type'] = '$type';
-
-  void accept(InfoVisitor visitor) => visitor.visitTypedef(this);
-}
-
-/// Information about a function or method.
-class FunctionInfo extends BasicInfo with CodeInfo {
-  static const int TOP_LEVEL_FUNCTION_KIND = 0;
-  static const int CLOSURE_FUNCTION_KIND = 1;
-  static const int METHOD_FUNCTION_KIND = 2;
-  static const int CONSTRUCTOR_FUNCTION_KIND = 3;
-  static int _ids = 0;
-
-  /// Kind of function (top-level function, closure, method, or constructor).
-  int functionKind;
-
-  /// Modifiers applied to this function.
-  FunctionModifiers modifiers;
-
-  /// Nested closures that appear within the body of this function.
-  List<FunctionInfo> closures;
-
-  /// The type of this function.
-  String type;
-
-  /// The declared return type.
-  String returnType;
-
-  /// The inferred return type.
-  String inferredReturnType;
-
-  /// Name and type information for each parameter.
-  List<ParameterInfo> parameters;
-
-  /// Side-effects.
-  // TODO(sigmund): serialize more precisely, not just a string representation.
-  String sideEffects;
-
-  /// How many function calls were inlined into this function.
-  int inlinedCount;
-
-  /// The actual generated code.
-  String code;
-
-  FunctionInfo(
-      {String name,
-      String coverageId,
-      OutputUnitInfo outputUnit,
-      int size: 0,
-      this.functionKind,
-      this.modifiers,
-      this.closures,
-      this.type,
-      this.returnType,
-      this.inferredReturnType,
-      this.parameters,
-      this.sideEffects,
-      this.inlinedCount,
-      this.code})
-      : super(InfoKind.function, _ids++, name, outputUnit, size, coverageId);
-
-  FunctionInfo._(String serializedId) : super._fromId(serializedId);
-
-  Map toJson() => super.toJson()
-    ..addAll({
-      'children': closures.map((i) => i.serializedId).toList(),
-      'modifiers': modifiers.toJson(),
-      'returnType': returnType,
-      'inferredReturnType': inferredReturnType,
-      'parameters': parameters.map((p) => p.toJson()).toList(),
-      'sideEffects': sideEffects,
-      'inlinedCount': inlinedCount,
-      'code': code,
-      'type': type,
-      // Note: version 3.2 of dump-info serializes `uses` in a section called
-      // `holding` at the top-level.
-    });
-
-  void accept(InfoVisitor visitor) => visitor.visitFunction(this);
-}
-
-/// Information about how a dependency is used.
-class DependencyInfo {
-  /// The dependency, either a FunctionInfo or FieldInfo.
-  final Info target;
-
-  /// Either a selector mask indicating how this is used, or 'inlined'.
-  // TODO(sigmund): split mask into an enum or something more precise to really
-  // describe the dependencies in detail.
-  final String mask;
-
-  DependencyInfo(this.target, this.mask);
-
-  Map toJson() => {'id': target.serializedId, 'mask': mask};
-}
-
-/// Name and type information about a function parameter.
-class ParameterInfo {
-  final String name;
-  final String type;
-  final String declaredType;
-
-  ParameterInfo(this.name, this.type, this.declaredType);
-
-  Map toJson() => {'name': name, 'type': type, 'declaredType': declaredType};
-}
-
-/// Modifiers that may apply to methods.
-class FunctionModifiers {
-  final bool isStatic;
-  final bool isConst;
-  final bool isFactory;
-  final bool isExternal;
-
-  FunctionModifiers(
-      {this.isStatic: false,
-      this.isConst: false,
-      this.isFactory: false,
-      this.isExternal: false});
-
-  // TODO(sigmund): exclude false values (requires bumping the format version):
-  //   Map toJson() {
-  //     var res = <String, bool>{};
-  //     if (isStatic) res['static'] = true;
-  //     if (isConst) res['const'] = true;
-  //     if (isFactory) res['factory'] = true;
-  //     if (isExternal) res['external'] = true;
-  //     return res;
-  //   }
-  Map toJson() => {
-        'static': isStatic,
-        'const': isConst,
-        'factory': isFactory,
-        'external': isExternal,
-      };
-}
-
-/// Possible values of the `kind` field in the serialied infos.
-enum InfoKind {
-  library,
-  clazz,
-  function,
-  field,
-  outputUnit,
-  typedef,
-}
-
-String _kindToString(InfoKind kind) {
-  switch(kind) {
-    case InfoKind.library: return 'library';
-    case InfoKind.clazz: return 'class';
-    case InfoKind.function: return 'function';
-    case InfoKind.field: return 'field';
-    case InfoKind.outputUnit: return 'outputUnit';
-    case InfoKind.typedef: return 'typedef';
-    default: return null;
-  }
-}
-
-int _idFromSerializedId(String serializedId) =>
-    int.parse(serializedId.substring(serializedId.indexOf('/') + 1));
-
-InfoKind _kindFromSerializedId(String serializedId) =>
-    _kindFromString(serializedId.substring(0, serializedId.indexOf('/')));
-
-InfoKind _kindFromString(String kind) {
-  switch(kind) {
-    case 'library': return InfoKind.library;
-    case 'class': return InfoKind.clazz;
-    case 'function': return InfoKind.function;
-    case 'field': return InfoKind.field;
-    case 'outputUnit': return InfoKind.outputUnit;
-    case 'typedef': return InfoKind.typedef;
-    default: return null;
-  }
-}
-
-/// A simple visitor for information produced by the dart2js compiler.
-class InfoVisitor {
-  visitAll(AllInfo info) {}
-  visitProgram(ProgramInfo info) {}
-  visitLibrary(LibraryInfo info) {}
-  visitClass(ClassInfo info) {}
-  visitField(FieldInfo info) {}
-  visitFunction(FunctionInfo info) {}
-  visitTypedef(TypedefInfo info) {}
-  visitOutput(OutputUnitInfo info) {}
-}
-
-/// A visitor that recursively walks each portion of the program. Because the
-/// info representation is redundant, this visitor only walks the structure of
-/// the program and skips some redundant links. For example, even though
-/// visitAll contains references to functions, this visitor only recurses to
-/// visit libraries, then from each library we visit functions and classes, and
-/// so on.
-class RecursiveInfoVisitor extends InfoVisitor {
-  visitAll(AllInfo info) {
-    // Note: we don't visit functions, fields, classes, and typedefs because
-    // they are reachable from the library info.
-    info.libraries.forEach(visitLibrary);
-  }
-
-  visitLibrary(LibraryInfo info) {
-    info.topLevelFunctions.forEach(visitFunction);
-    info.topLevelVariables.forEach(visitField);
-    info.classes.forEach(visitClass);
-    info.typedefs.forEach(visitTypedef);
-  }
-
-  visitClass(ClassInfo info) {
-    info.functions.forEach(visitFunction);
-    info.fields.forEach(visitField);
-  }
-
-  visitField(FieldInfo info) {
-    info.closures.forEach(visitFunction);
-  }
-
-  visitFunction(FunctionInfo info) {
-    info.closures.forEach(visitFunction);
-  }
-}