| // Copyright 2016 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.android.desugar.io; |
| |
| import org.objectweb.asm.Opcodes; |
| |
| /** Convenience method for working with {@code int} bitwise flags. */ |
| public class BitFlags { |
| |
| /** |
| * Returns {@code true} iff <b>all</b> bits in {@code bitmask} are set in {@code flags}. Trivially |
| * returns {@code true} if {@code bitmask} is 0. |
| */ |
| public static boolean isSet(int flags, int bitmask) { |
| return (flags & bitmask) == bitmask; |
| } |
| |
| /** |
| * Returns {@code true} iff <b>none</b> of the bits in {@code bitmask} are set in {@code flags}. |
| * Trivially returns {@code true} if {@code bitmask} is 0. |
| */ |
| public static boolean noneSet(int flags, int bitmask) { |
| return (flags & bitmask) == 0; |
| } |
| |
| public static boolean isInterface(int access) { |
| return isSet(access, Opcodes.ACC_INTERFACE); |
| } |
| |
| public static boolean isStatic(int access) { |
| return isSet(access, Opcodes.ACC_STATIC); |
| } |
| |
| public static boolean isSynthetic(int access) { |
| return isSet(access, Opcodes.ACC_SYNTHETIC); |
| } |
| |
| // Static methods only |
| private BitFlags() {} |
| } |