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/*
* Copyright 2019 the original author or authors.
*
* 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 org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.factories;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.specs.ExcludeEverything;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.specs.ExcludeNothing;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.excludes.specs.ExcludeSpec;
import java.util.Collection;
import java.util.function.BiFunction;
import java.util.function.Function;
public abstract class Optimizations {
public static ExcludeSpec optimizeAnyOf(ExcludeSpec one, ExcludeSpec two, BiFunction onMiss) {
// fast path for two
if (one == null) {
return two;
}
if (two == null) {
return one;
}
if (one.equals(two)) {
return one;
}
if (one instanceof ExcludeEverything) {
return one;
}
if (one instanceof ExcludeNothing) {
return two;
}
if (two instanceof ExcludeEverything) {
return two;
}
if (two instanceof ExcludeNothing) {
return one;
}
return onMiss.apply(one, two);
}
public static ExcludeSpec optimizeAllOf(ExcludeFactory factory, ExcludeSpec one, ExcludeSpec two, BiFunction onMiss) {
// fast path for two
if (one == null) {
return two;
}
if (two == null) {
return one;
}
if (one.equals(two)) {
return one;
}
if (one instanceof ExcludeEverything) {
return two;
}
if (one instanceof ExcludeNothing) {
return factory.nothing();
}
if (two instanceof ExcludeEverything) {
return one;
}
if (two instanceof ExcludeNothing) {
return factory.nothing();
}
return onMiss.apply(one, two);
}
public static > ExcludeSpec optimizeCollection(ExcludeFactory factory, T specs, Function onMiss) {
if (specs.isEmpty()) {
return factory.nothing();
}
if (specs.size() == 1) {
return specs.iterator().next();
}
return onMiss.apply(specs);
}
}