org.gradle.api.internalivyservice.resolveengine.strict.StrictVersionConstraints Maven / Gradle / Ivy
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Gradle 6.9.1 API redistribution.
/*
* 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.strict;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import org.gradle.api.artifacts.ModuleIdentifier;
import java.util.Collections;
import java.util.Set;
public class StrictVersionConstraints {
public static final StrictVersionConstraints EMPTY = new StrictVersionConstraints() {
@Override
public final StrictVersionConstraints union(StrictVersionConstraints other) {
return other;
}
@Override
public final StrictVersionConstraints intersect(StrictVersionConstraints other) {
return EMPTY;
}
@Override
public boolean isEmpty() {
return true;
}
@Override
public boolean contains(ModuleIdentifier module) {
return false;
}
@Override
public String toString() {
return "no modules";
}
};
private final Set modules;
private StrictVersionConstraints() {
modules = Collections.emptySet();
}
private StrictVersionConstraints(Set modules) {
this.modules = modules;
}
public static StrictVersionConstraints of(Set modules) {
if (modules.isEmpty()) {
return EMPTY;
}
return new StrictVersionConstraints(modules);
}
public Set getModules() {
return modules;
}
public boolean isEmpty() {
return this == EMPTY;
}
public boolean contains(ModuleIdentifier module) {
return modules.contains(module);
}
public StrictVersionConstraints union(StrictVersionConstraints other) {
if (other == EMPTY) {
return this;
}
if (this == other) {
// this happens quite a lot!
return this;
}
if (this.modules.equals(other.modules)) {
return this;
}
ImmutableSet.Builder builder = ImmutableSet.builderWithExpectedSize(modules.size() + other.modules.size());
builder.addAll(modules);
builder.addAll(other.modules);
return of(builder.build());
}
public StrictVersionConstraints intersect(StrictVersionConstraints other) {
if (other.modules == modules) {
return this;
}
if (other == EMPTY) {
return EMPTY;
}
return of(ImmutableSet.copyOf(Sets.intersection(modules, other.modules)));
}
@Override
public String toString() {
return "modules=" + modules;
}
}