/*
* Copyright (C) 2015 Square, Inc.
*
* 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.squareup.picasso;
/** Designates the policy to use when dealing with memory cache. */
@SuppressWarnings("PointlessBitwiseExpression")
public enum MemoryPolicy {
/** Skips memory cache lookup when processing a request. */
NO_CACHE(1 << 0),
/**
* Skips storing the final result into memory cache. Useful for one-off requests
* to avoid evicting other bitmaps from the cache.
*/
NO_STORE(1 << 1);
static boolean shouldReadFromMemoryCache(int memoryPolicy) {
return (memoryPolicy & MemoryPolicy.NO_CACHE.index) == 0;
}
static boolean shouldWriteToMemoryCache(int memoryPolicy) {
return (memoryPolicy & MemoryPolicy.NO_STORE.index) == 0;
}
final int index;
MemoryPolicy(int index) {
this.index = index;
}
}