/*
* Copyright 2015 Ben Manes. 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.github.benmanes.caffeine.cache.local;
import static com.github.benmanes.caffeine.cache.Specifications.ACCESS_ORDER_DEQUE;
import static com.github.benmanes.caffeine.cache.Specifications.WRITE_ORDER_DEQUE;
import com.github.benmanes.caffeine.cache.Feature;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;
/**
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class AddDeques extends LocalCacheRule {
@Override
protected boolean applies() {
return true;
}
@Override
protected void execute() {
addAccessOrderEdenDeque();
addAccessOrderMainDeque();
addWriteOrderDeque();
}
private void addAccessOrderEdenDeque() {
if (Feature.usesAccessOrderEdenDeque(context.parentFeatures)
|| !Feature.usesAccessOrderEdenDeque(context.generateFeatures)) {
return;
}
context.constructor.addStatement(
"this.$L = builder.evicts() || builder.expiresAfterAccess()\n? new $T()\n: null",
"accessOrderEdenDeque", ACCESS_ORDER_DEQUE);
addFieldAndMethod(ACCESS_ORDER_DEQUE, "accessOrderEdenDeque");
}
private void addAccessOrderMainDeque() {
if (Feature.usesAccessOrderMainDeque(context.parentFeatures)
|| !Feature.usesAccessOrderMainDeque(context.generateFeatures)) {
return;
}
addDeque(ACCESS_ORDER_DEQUE, "accessOrderProbationDeque");
addDeque(ACCESS_ORDER_DEQUE, "accessOrderProtectedDeque");
}
private void addWriteOrderDeque() {
if (Feature.usesWriteOrderDeque(context.parentFeatures)
|| !Feature.usesWriteOrderDeque(context.generateFeatures)) {
return;
}
addDeque(WRITE_ORDER_DEQUE, "writeOrderDeque");
}
private void addDeque(TypeName type, String name) {
addConstructor(type, name);
addFieldAndMethod(type, name);
}
private void addConstructor(TypeName type, String name) {
context.constructor.addStatement("this.$L = new $T()", name, type);
}
private void addFieldAndMethod(TypeName type, String name) {
context.cache.addField(FieldSpec.builder(type, name, privateFinalModifiers).build());
context.cache.addMethod(MethodSpec.methodBuilder(name)
.addModifiers(protectedFinalModifiers)
.addStatement("return " + name)
.returns(type)
.build());
}
}