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/*
* Copyright 2012 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.result;
import com.google.common.base.Objects;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import org.gradle.api.Describable;
import org.gradle.api.artifacts.result.ComponentSelectionCause;
import org.gradle.api.artifacts.result.ComponentSelectionDescriptor;
import org.gradle.api.artifacts.result.ComponentSelectionReason;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
public class ComponentSelectionReasons {
public static final ComponentSelectionDescriptorInternal REQUESTED = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.REQUESTED);
public static final ComponentSelectionDescriptorInternal ROOT = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.ROOT);
public static final ComponentSelectionDescriptorInternal FORCED = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.FORCED);
public static final ComponentSelectionDescriptorInternal CONFLICT_RESOLUTION = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.CONFLICT_RESOLUTION);
public static final ComponentSelectionDescriptorInternal SELECTED_BY_RULE = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.SELECTED_BY_RULE);
public static final ComponentSelectionDescriptorInternal COMPOSITE_BUILD = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.COMPOSITE_BUILD);
public static final ComponentSelectionDescriptorInternal CONSTRAINT = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.CONSTRAINT);
public static final ComponentSelectionDescriptorInternal REJECTION = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.REJECTION);
public static final ComponentSelectionDescriptorInternal BY_ANCESTOR = new DefaultComponentSelectionDescriptor(ComponentSelectionCause.BY_ANCESTOR);
public static ComponentSelectionReason requested() {
return new DefaultComponentSelectionReason(REQUESTED);
}
public static ComponentSelectionReason root() {
return new DefaultComponentSelectionReason(ROOT);
}
public static ComponentSelectionReason of(ComponentSelectionDescriptor... descriptions) {
return new DefaultComponentSelectionReason(descriptions);
}
public static ComponentSelectionReasonInternal of(Collection dependencyReasons) {
return new DefaultComponentSelectionReason(dependencyReasons.toArray(new ComponentSelectionDescriptor[0]));
}
public static ComponentSelectionReasonInternal empty() {
return new DefaultComponentSelectionReason();
}
public static boolean isCauseExpected(ComponentSelectionDescriptor descriptor) {
return descriptor.getCause() == ComponentSelectionCause.REQUESTED || descriptor.getCause() == ComponentSelectionCause.ROOT;
}
private static class DefaultComponentSelectionReason implements ComponentSelectionReasonInternal {
private final ArrayDeque descriptions;
private DefaultComponentSelectionReason(ComponentSelectionDescriptor... descriptors) {
descriptions = new ArrayDeque<>(1);
for (ComponentSelectionDescriptor descriptor : descriptors) {
descriptions.add((ComponentSelectionDescriptorInternal) descriptor);
}
}
@Override
public boolean isForced() {
return hasCause(ComponentSelectionCause.FORCED);
}
private boolean hasCause(ComponentSelectionCause cause) {
for (ComponentSelectionDescriptor description : descriptions) {
if (description.getCause() == cause) {
return true;
}
}
return false;
}
@Override
public boolean isConflictResolution() {
return hasCause(ComponentSelectionCause.CONFLICT_RESOLUTION);
}
@Override
public boolean isSelectedByRule() {
return hasCause(ComponentSelectionCause.SELECTED_BY_RULE);
}
@Override
public boolean isExpected() {
return descriptions.size() == 1 && isCauseExpected(Iterables.getLast(descriptions));
}
@Override
public boolean isCompositeSubstitution() {
return hasCause(ComponentSelectionCause.COMPOSITE_BUILD);
}
@Override
@SuppressWarnings("deprecation")
public String getDescription() {
// for backwards compatibility, we use the last added description
return descriptions.getLast().toString();
}
public String toString() {
return getDescription();
}
@Override
public ComponentSelectionReasonInternal addCause(ComponentSelectionCause cause, Describable description) {
addCause(new DefaultComponentSelectionDescriptor(cause, description));
return this;
}
@Override
public ComponentSelectionReasonInternal setCause(ComponentSelectionDescriptor description) {
descriptions.clear();
addCause(description);
return this;
}
@Override
public ComponentSelectionReasonInternal addCause(ComponentSelectionDescriptor description) {
ComponentSelectionDescriptorInternal descriptor = (ComponentSelectionDescriptorInternal) description;
if (!descriptions.contains(descriptor)) {
descriptions.add(descriptor);
}
return this;
}
@Override
public List getDescriptions() {
return ImmutableList.copyOf(descriptions);
}
@Override
public boolean isConstrained() {
return hasCause(ComponentSelectionCause.CONSTRAINT);
}
@Override
public boolean hasCustomDescriptions() {
for (ComponentSelectionDescriptorInternal description : descriptions) {
if (description.hasCustomDescription()) {
return true;
}
}
return false;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
DefaultComponentSelectionReason that = (DefaultComponentSelectionReason) o;
return sameDescriptorsAs(that);
}
private boolean sameDescriptorsAs(DefaultComponentSelectionReason that) {
if (descriptions.size() != that.descriptions.size()) {
return false;
}
Iterator it1 = descriptions.iterator();
Iterator it2 = descriptions.iterator();
while (it1.hasNext()) {
if (!it1.next().equals(it2.next())) {
return false;
}
}
return true;
}
@Override
public int hashCode() {
return Objects.hashCode(descriptions);
}
}
}