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DefaultPendingDependenciesVisitor.java
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DefaultPendingDependenciesVisitor.java
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/*
* Copyright 2018 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.graph.builder;
import com.google.common.collect.Lists;
import org.gradle.api.artifacts.ModuleIdentifier;
import java.util.List;
class DefaultPendingDependenciesVisitor implements PendingDependenciesVisitor {
private final ResolveState resolveState;
private List<PendingDependencies> noLongerPending;
DefaultPendingDependenciesVisitor(ResolveState resolveState) {
this.resolveState = resolveState;
}
@Override
public PendingState maybeAddAsPendingDependency(NodeState node, DependencyState dependencyState) {
ModuleIdentifier key = dependencyState.getModuleIdentifier();
boolean isConstraint = dependencyState.getDependency().isConstraint();
if (!isConstraint) {
if (markNotPending(key)) {
return PendingState.NOT_PENDING_ACTIVATING;
} else {
return PendingState.NOT_PENDING;
}
}
// Adding an optional dependency: see if we already have a hard dependency on the same module
ModuleResolveState module = resolveState.getModule(key);
boolean pending = module.isPending();
// Already have a hard dependency, this optional dependency is not pending.
if (!pending) {
return PendingState.NOT_PENDING;
}
// No hard dependency, queue up pending dependency in case we see a hard dependency later.
module.addPendingNode(node);
return PendingState.PENDING;
}
@Override
public boolean markNotPending(ModuleIdentifier id) {
return markNoLongerPending(resolveState.getModule(id).getPendingDependencies());
}
private boolean markNoLongerPending(PendingDependencies pendingDependencies) {
boolean activatedPending = false;
if (pendingDependencies.hasPendingComponents()) {
if (noLongerPending == null) {
noLongerPending = Lists.newLinkedList();
}
noLongerPending.add(pendingDependencies);
activatedPending = pendingDependencies.shouldReportActivatePending();
}
pendingDependencies.increaseHardEdgeCount();
return activatedPending;
}
@Override
public void complete() {
if (noLongerPending != null) {
for (PendingDependencies pendingDependencies : noLongerPending) {
pendingDependencies.turnIntoHardDependencies();
}
noLongerPending = null;
}
}
}