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org.gradle.api.internal.provider.MapCollectors Maven / Gradle / Ivy
/*
* 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.provider;
import com.google.common.base.Objects;
import org.gradle.api.internal.tasks.TaskDependencyResolveContext;
import java.util.Collection;
import java.util.Map;
public class MapCollectors {
public static class EmptyMap implements MapCollector {
@Override
public boolean present() {
return true;
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
return true;
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
return true;
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return true;
}
}
public static class SingleEntry implements MapCollector {
private final K key;
private final V value;
public SingleEntry(K key, V value) {
this.key = key;
this.value = value;
}
@Override
public boolean present() {
return true;
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
collector.add(key, value, dest);
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
collectInto(collector, dest);
return true;
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
collector.add(key, dest);
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
collectKeysInto(collector, dest);
return true;
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return false;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SingleEntry that = (SingleEntry) o;
return Objects.equal(key, that.key) && Objects.equal(value, that.value);
}
@Override
public int hashCode() {
return Objects.hashCode(key, value);
}
}
public static class EntryWithValueFromProvider implements MapCollector {
private final K key;
private final ProviderInternal providerOfValue;
public EntryWithValueFromProvider(K key, ProviderInternal providerOfValue) {
this.key = key;
this.providerOfValue = providerOfValue;
}
@Override
public boolean present() {
return providerOfValue.isPresent();
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
collector.add(key, providerOfValue.get(), dest);
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
V value = providerOfValue.getOrNull();
if (value != null) {
collector.add(key, value, dest);
return true;
} else {
return false;
}
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
if (providerOfValue.isPresent()) {
collector.add(key, dest);
} else {
throw new IllegalStateException(Providers.NULL_VALUE);
}
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
if (providerOfValue.isPresent()) {
collector.add(key, dest);
return true;
} else {
return false;
}
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return providerOfValue.maybeVisitBuildDependencies(context);
}
}
public static class EntriesFromMap implements MapCollector {
private final Map entries;
public EntriesFromMap(Map entries) {
this.entries = entries;
}
@Override
public boolean present() {
return true;
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
collector.addAll(entries.entrySet(), dest);
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
collectInto(collector, dest);
return true;
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
collector.addAll(entries.keySet(), dest);
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
collectKeysInto(collector, dest);
return true;
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return false;
}
}
public static class EntriesFromMapProvider implements MapCollector {
private final ProviderInternal> providerOfEntries;
public EntriesFromMapProvider(ProviderInternal> providerOfEntries) {
this.providerOfEntries = providerOfEntries;
}
@Override
public boolean present() {
return providerOfEntries.isPresent();
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
collector.addAll(providerOfEntries.get().entrySet(), dest);
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
Map entries = providerOfEntries.getOrNull();
if (entries != null) {
collector.addAll(entries.entrySet(), dest);
return true;
} else {
return false;
}
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
collector.addAll(providerOfEntries.get().keySet(), dest);
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
Map entries = providerOfEntries.getOrNull();
if (entries != null) {
collector.addAll(entries.keySet(), dest);
return true;
} else {
return false;
}
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return providerOfEntries.maybeVisitBuildDependencies(context);
}
}
public static class NoValue implements MapCollector {
@Override
public boolean present() {
return false;
}
@Override
public void collectInto(MapEntryCollector collector, Map dest) {
throw new IllegalStateException(Providers.NULL_VALUE);
}
@Override
public boolean maybeCollectInto(MapEntryCollector collector, Map dest) {
return false;
}
@Override
public void collectKeysInto(ValueCollector collector, Collection dest) {
throw new IllegalStateException(Providers.NULL_VALUE);
}
@Override
public boolean maybeCollectKeysInto(ValueCollector collector, Collection dest) {
return false;
}
@Override
public boolean maybeVisitBuildDependencies(TaskDependencyResolveContext context) {
return true;
}
}
}
