FlagUtil.java
/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 androidx.test.ext.truth.internal;
import java.util.ArrayList;
import java.util.List;
/**
* Utility class for asserting flag values
*
* @hide
*/
public final class FlagUtil {
private FlagUtil() {}
/**
* Builds list of specified flags as hex strings, intended for building readable error messages
* for flag assets.
*
* @hide
*/
public static List<String> flagNames(int flags) {
List<String> flagStrings = new ArrayList<>();
for (int i = 0; i < 32; i++) {
int flagValue = 1 << i;
if ((flags & flagValue) == flagValue) {
flagStrings.add(String.format("0x%x", flagValue));
}
}
return flagStrings;
}
}