/*
* Copyright 2014 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.model.internal.core;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Multimap;
import net.jcip.annotations.NotThreadSafe;
import net.jcip.annotations.ThreadSafe;
import org.gradle.api.Action;
import org.gradle.api.Transformer;
import org.gradle.internal.Actions;
import org.gradle.internal.BiAction;
import org.gradle.internal.Factories;
import org.gradle.internal.Factory;
import org.gradle.model.internal.core.rule.describe.ModelRuleDescriptor;
import org.gradle.model.internal.core.rule.describe.SimpleModelRuleDescriptor;
import org.gradle.model.internal.type.ModelType;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
@ThreadSafe
public abstract class ModelRegistrations {
public static <T> Builder serviceInstance(ModelReference<T> modelReference, T instance) {
return bridgedInstance(modelReference, instance)
.hidden(true);
}
public static <T> Builder bridgedInstance(ModelReference<T> modelReference, T instance) {
return unmanagedInstance(modelReference, Factories.constant(instance), Actions.doNothing());
}
public static <T> Builder unmanagedInstance(ModelReference<T> modelReference, final Factory<? extends T> factory) {
return unmanagedInstance(modelReference, factory, Actions.doNothing());
}
public static <T> Builder unmanagedInstance(final ModelReference<T> modelReference, final Factory<? extends T> factory, final Action<? super MutableModelNode> initializer) {
return unmanagedInstanceOf(modelReference, new Transformer<T, MutableModelNode>() {
@Override
public T transform(MutableModelNode modelNode) {
T t = factory.create();
initializer.execute(modelNode);
return t;
}
});
}
public static <T> Builder unmanagedInstanceOf(final ModelReference<T> modelReference, final Transformer<? extends T, ? super MutableModelNode> factory) {
return of(modelReference.getPath())
.action(ModelActionRole.Create, new Action<MutableModelNode>() {
@Override
public void execute(MutableModelNode modelNode) {
T t = factory.transform(modelNode);
modelNode.setPrivateData(modelReference.getType(), t);
}
})
.withProjection(UnmanagedModelProjection.of(modelReference.getType()));
}
public static Builder of(ModelPath path) {
return new Builder(path);
}
public static Builder of(ModelPath path, NodeInitializer initializer) {
return new Builder(path, initializer);
}
@NotThreadSafe
public static class Builder {
private final ModelReference<Object> reference;
private final List<ModelProjection> projections = new ArrayList<ModelProjection>();
private final ListMultimap<ModelActionRole, ModelAction> actions = ArrayListMultimap.create();
private final NodeInitializer nodeInitializer;
private final DescriptorReference descriptorReference = new DescriptorReference();
private boolean hidden;
private Builder(ModelPath path) {
this(path, null);
}
private Builder(ModelPath path, NodeInitializer nodeInitializer) {
this.reference = ModelReference.of(path);
this.nodeInitializer = nodeInitializer;
}
public Builder descriptor(String descriptor) {
return descriptor(new SimpleModelRuleDescriptor(descriptor));
}
public Builder descriptor(ModelRuleDescriptor descriptor) {
this.descriptorReference.descriptor = descriptor;
return this;
}
public Builder action(ModelActionRole role, ModelAction action) {
this.actions.put(role, action);
return this;
}
public Builder action(ModelActionRole role, Action<? super MutableModelNode> action) {
return action(role, new NoInputsBuilderAction(reference, descriptorReference, action));
}
public <T> Builder action(ModelActionRole role, ModelReference<T> input, BiAction<MutableModelNode, T> action) {
return action(role, new InputsUsingBuilderAction(reference, descriptorReference, Collections.singleton(input), new SingleInputNodeBiAction<T>(input.getType(), action)));
}
public Builder action(ModelActionRole role, Iterable<? extends ModelReference<?>> inputs, BiAction<? super MutableModelNode, ? super List<ModelView<?>>> action) {
return action(role, new InputsUsingBuilderAction(reference, descriptorReference, inputs, action));
}
public Builder actions(Multimap<ModelActionRole, ? extends ModelAction> actions) {
this.actions.putAll(actions);
return this;
}
public Builder withProjection(ModelProjection projection) {
projections.add(projection);
return this;
}
public Builder hidden(boolean flag) {
this.hidden = flag;
return this;
}
public ModelRegistration build() {
ModelRuleDescriptor descriptor = descriptorReference.descriptor;
if (nodeInitializer != null) {
actions.putAll(nodeInitializer.getActions(reference, descriptor));
}
if (!projections.isEmpty()) {
action(ModelActionRole.Discover, AddProjectionsAction.of(reference, descriptor, projections));
}
return new DefaultModelRegistration(reference.getPath(), descriptor, hidden, actions);
}
private static class DescriptorReference {
private ModelRuleDescriptor descriptor;
}
private static abstract class AbstractBuilderAction implements ModelAction {
private final ModelReference<Object> subject;
private final DescriptorReference descriptorReference;
public AbstractBuilderAction(ModelReference<Object> subject, DescriptorReference descriptorReference) {
this.subject = subject;
this.descriptorReference = descriptorReference;
}
@Override
public ModelReference<Object> getSubject() {
return subject;
}
@Override
public ModelRuleDescriptor getDescriptor() {
return descriptorReference.descriptor;
}
}
private static class NoInputsBuilderAction extends AbstractBuilderAction {
private final Action<? super MutableModelNode> action;
public NoInputsBuilderAction(ModelReference<Object> subject, DescriptorReference descriptorReference, Action<? super MutableModelNode> action) {
super(subject, descriptorReference);
this.action = action;
}
@Override
public void execute(MutableModelNode modelNode, List<ModelView<?>> inputs) {
action.execute(modelNode);
}
@Override
public List<? extends ModelReference<?>> getInputs() {
return Collections.emptyList();
}
}
private static class InputsUsingBuilderAction extends AbstractBuilderAction {
private final List<ModelReference<?>> inputs;
private final BiAction<? super MutableModelNode, ? super List<ModelView<?>>> action;
public InputsUsingBuilderAction(ModelReference<Object> subject, DescriptorReference descriptorReference, Iterable<? extends ModelReference<?>> inputs, BiAction<? super MutableModelNode, ? super List<ModelView<?>>> action) {
super(subject, descriptorReference);
this.inputs = ImmutableList.copyOf(inputs);
this.action = action;
}
@Override
public void execute(MutableModelNode modelNode, List<ModelView<?>> inputs) {
action.execute(modelNode, inputs);
}
@Override
public List<? extends ModelReference<?>> getInputs() {
return inputs;
}
}
private static class SingleInputNodeBiAction<T> implements BiAction<MutableModelNode, List<ModelView<?>>> {
private final ModelType<T> type;
private final BiAction<MutableModelNode, T> action;
public SingleInputNodeBiAction(ModelType<T> type, BiAction<MutableModelNode, T> action) {
this.type = type;
this.action = action;
}
@Override
public void execute(MutableModelNode mutableModelNode, List<ModelView<?>> modelViews) {
T input = ModelViews.getInstance(modelViews, 0, type);
action.execute(mutableModelNode, input);
}
}
}
}