/*
* 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.dsl.internal;
import groovy.lang.Closure;
import groovy.lang.GroovyObjectSupport;
import groovy.lang.MissingMethodException;
import groovy.lang.MissingPropertyException;
import net.jcip.annotations.NotThreadSafe;
import org.gradle.api.Action;
import org.gradle.api.GradleException;
import org.gradle.api.internal.ClosureBackedAction;
import org.gradle.internal.Actions;
import org.gradle.model.internal.core.ModelActionRole;
import org.gradle.model.internal.core.ModelPath;
import org.gradle.model.internal.core.ModelReference;
import org.gradle.model.internal.core.ModelRegistrations;
import org.gradle.model.internal.core.NoInputsModelAction;
import org.gradle.model.internal.core.NodeInitializer;
import org.gradle.model.internal.core.NodeInitializerRegistry;
import org.gradle.model.internal.core.rule.describe.ModelRuleDescriptor;
import org.gradle.model.internal.core.rule.describe.SimpleModelRuleDescriptor;
import org.gradle.model.internal.registry.ModelRegistry;
import org.gradle.model.internal.type.ModelType;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.gradle.model.internal.core.DefaultNodeInitializerRegistry.DEFAULT_REFERENCE;
import static org.gradle.model.internal.core.NodeInitializerContext.forType;
@NotThreadSafe
public class NonTransformedModelDslBacking extends GroovyObjectSupport {
// TODO include link to documentation giving more explanation of what's going on here.
public static final String ATTEMPTED_INPUT_SYNTAX_USED_MESSAGE = "$() syntax cannot be used when model {} block is not a top level statement in the script";
private final ModelPath modelPath;
private final ModelRegistry modelRegistry;
private AtomicBoolean executingDsl;
public NonTransformedModelDslBacking(ModelRegistry modelRegistry) {
this(new AtomicBoolean(), null, modelRegistry);
}
private NonTransformedModelDslBacking(AtomicBoolean executingDsl, ModelPath modelPath, ModelRegistry modelRegistry) {
this.executingDsl = executingDsl;
this.modelPath = modelPath;
this.modelRegistry = modelRegistry;
}
private NonTransformedModelDslBacking getChildPath(String name) {
ModelPath path = modelPath == null ? ModelPath.path(name) : modelPath.child(name);
return new NonTransformedModelDslBacking(executingDsl, path, modelRegistry);
}
private void registerConfigurationAction(final Closure<?> action) {
modelRegistry.configure(ModelActionRole.Mutate,
new NoInputsModelAction<Object>(
ModelReference.untyped(modelPath),
new SimpleModelRuleDescriptor("model." + modelPath), new ClosureBackedAction<Object>(action)
));
}
private <T> void register(Class<T> type, Closure<?> closure) {
register(type, new ClosureBackedAction<T>(closure));
}
private <T> void register(Class<T> type, Action<? super T> action) {
ModelRuleDescriptor descriptor = new SimpleModelRuleDescriptor("model." + modelPath);
NodeInitializerRegistry nodeInitializerRegistry = modelRegistry.realize(DEFAULT_REFERENCE.getPath(), DEFAULT_REFERENCE.getType());
ModelType<T> modelType = ModelType.of(type);
NodeInitializer nodeInitializer = nodeInitializerRegistry.getNodeInitializer(forType(modelType));
modelRegistry.register(
ModelRegistrations.of(modelPath, nodeInitializer)
.descriptor(descriptor)
.action(ModelActionRole.Initialize, NoInputsModelAction.of(ModelReference.of(modelPath, modelType), descriptor, action))
.build()
);
}
public void configure(Closure<?> action) {
executingDsl.set(true);
try {
ClosureBackedAction.execute(this, action);
} finally {
executingDsl.set(false);
}
}
public NonTransformedModelDslBacking propertyMissing(String name) {
if (!executingDsl.get()) {
throw new MissingPropertyException(name, getClass());
}
return getChildPath(name);
}
public Void methodMissing(String name, Object argsObj) {
Object[] args = (Object[]) argsObj;
if (!executingDsl.get()) {
if (name.equals("$")) {
throw new GradleException(ATTEMPTED_INPUT_SYNTAX_USED_MESSAGE);
} else {
throw new MissingMethodException(name, getClass(), args);
}
} else {
if (args.length == 1 && args[0] instanceof Closure) {
Closure<?> closure = (Closure) args[0];
getChildPath(name).registerConfigurationAction(closure);
return null;
} else if (args.length == 2 && args[0] instanceof Class && args[1] instanceof Closure) {
Class<?> clazz = (Class<?>) args[0];
Closure<?> closure = (Closure<?>) args[1];
getChildPath(name).register(clazz, closure);
return null;
} else if (args.length == 1 && args[0] instanceof Class) {
Class<?> clazz = (Class<?>) args[0];
getChildPath(name).register(clazz, Actions.doNothing());
return null;
} else {
throw new MissingMethodException(name, getClass(), args);
}
}
}
}