Linter Demo

Errors: 1

Warnings: 0

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/universe/side_effects.dart

// Copyright (c) 2013, 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. part of universe; class SideEffects { // Changes flags. static const int FLAG_CHANGES_INDEX = 0; static const int FLAG_CHANGES_INSTANCE_PROPERTY = FLAG_CHANGES_INDEX + 1; static const int FLAG_CHANGES_STATIC_PROPERTY = FLAG_CHANGES_INSTANCE_PROPERTY + 1; static const int FLAG_CHANGES_COUNT = FLAG_CHANGES_STATIC_PROPERTY + 1; // Depends flags (one for each changes flag). static const int FLAG_DEPENDS_ON_INDEX_STORE = FLAG_CHANGES_COUNT; static const int FLAG_DEPENDS_ON_INSTANCE_PROPERTY_STORE = FLAG_DEPENDS_ON_INDEX_STORE + 1; static const int FLAG_DEPENDS_ON_STATIC_PROPERTY_STORE = FLAG_DEPENDS_ON_INSTANCE_PROPERTY_STORE + 1; static const int FLAG_DEPENDS_ON_COUNT = FLAG_DEPENDS_ON_STATIC_PROPERTY_STORE + 1; int _flags = 0; SideEffects() { setAllSideEffects(); setDependsOnSomething(); } SideEffects.empty(); bool operator==(other) => _flags == other._flags; int get hashCode => throw new UnsupportedError('SideEffects.hashCode'); bool _getFlag(int position) => (_flags & (1 << position)) != 0; void _setFlag(int position) { _flags |= (1 << position); } bool _clearFlag(int position) { _flags &= ~(1 << position); } int getChangesFlags() => _flags & ((1 << FLAG_CHANGES_COUNT) - 1); int getDependsOnFlags() { return (_flags & ((1 << FLAG_DEPENDS_ON_COUNT) - 1)) >> FLAG_CHANGES_COUNT; } bool hasSideEffects() => getChangesFlags() != 0; bool dependsOnSomething() => getDependsOnFlags() != 0; void setAllSideEffects() { _flags |= ((1 << FLAG_CHANGES_COUNT) - 1); } void clearAllSideEffects() { _flags &= ~((1 << FLAG_CHANGES_COUNT) - 1); } void setDependsOnSomething() { int count = FLAG_DEPENDS_ON_COUNT - FLAG_CHANGES_COUNT; _flags |= (((1 << count) - 1) << FLAG_CHANGES_COUNT); } void clearAllDependencies() { int count = FLAG_DEPENDS_ON_COUNT - FLAG_CHANGES_COUNT; _flags &= ~(((1 << count) - 1) << FLAG_CHANGES_COUNT); } bool dependsOnStaticPropertyStore() { return _getFlag(FLAG_DEPENDS_ON_STATIC_PROPERTY_STORE); } void setDependsOnStaticPropertyStore() { _setFlag(FLAG_DEPENDS_ON_STATIC_PROPERTY_STORE); } void clearDependsOnStaticPropertyStore() { _clearFlag(FLAG_DEPENDS_ON_STATIC_PROPERTY_STORE); } void setChangesStaticProperty() { _setFlag(FLAG_CHANGES_STATIC_PROPERTY); } void clearChangesStaticProperty() { _clearFlag(FLAG_CHANGES_STATIC_PROPERTY); } bool changesStaticProperty() => _getFlag(FLAG_CHANGES_STATIC_PROPERTY); bool dependsOnIndexStore() => _getFlag(FLAG_DEPENDS_ON_INDEX_STORE); void setDependsOnIndexStore() { _setFlag(FLAG_DEPENDS_ON_INDEX_STORE); } void clearDependsOnIndexStore() { _clearFlag(FLAG_DEPENDS_ON_INDEX_STORE); } void setChangesIndex() { _setFlag(FLAG_CHANGES_INDEX); } void clearChangesIndex() { _clearFlag(FLAG_CHANGES_INDEX); } bool changesIndex() => _getFlag(FLAG_CHANGES_INDEX); bool dependsOnInstancePropertyStore() { return _getFlag(FLAG_DEPENDS_ON_INSTANCE_PROPERTY_STORE); } void setDependsOnInstancePropertyStore() { _setFlag(FLAG_DEPENDS_ON_INSTANCE_PROPERTY_STORE); } void clearDependsOnInstancePropertyStore() { _setFlag(FLAG_DEPENDS_ON_INSTANCE_PROPERTY_STORE); } void setChangesInstanceProperty() { _setFlag(FLAG_CHANGES_INSTANCE_PROPERTY); } void clearChangesInstanceProperty() { _clearFlag(FLAG_CHANGES_INSTANCE_PROPERTY); } bool changesInstanceProperty() => _getFlag(FLAG_CHANGES_INSTANCE_PROPERTY); static int computeDependsOnFlags(int flags) => flags << FLAG_CHANGES_COUNT; bool dependsOn(int dependsFlags) => (_flags & dependsFlags) != 0; void add(SideEffects other) { _flags |= other._flags; } void setTo(SideEffects other) { _flags = other._flags; } String toString() { StringBuffer buffer = new StringBuffer(); buffer.write('Depends on'); if (dependsOnIndexStore()) buffer.write(' []'); if (dependsOnInstancePropertyStore()) buffer.write(' field store'); if (dependsOnStaticPropertyStore()) buffer.write(' static store'); if (!dependsOnSomething()) buffer.write(' nothing'); buffer.write(', Changes'); if (changesIndex()) buffer.write(' []'); if (changesInstanceProperty()) buffer.write(' field'); if (changesStaticProperty()) buffer.write(' static'); if (!hasSideEffects()) buffer.write(' nothing'); buffer.write('.'); return buffer.toString(); } }