/*
* Copyright 2009 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.plugins;
import com.google.common.collect.Maps;
import groovy.lang.Closure;
import org.gradle.api.Action;
import org.gradle.api.GradleException;
import org.gradle.api.plugins.Convention;
import org.gradle.api.plugins.ExtraPropertiesExtension;
import org.gradle.api.reflect.HasPublicType;
import org.gradle.api.reflect.TypeOf;
import org.gradle.internal.metaobject.AbstractDynamicObject;
import org.gradle.internal.metaobject.BeanDynamicObject;
import org.gradle.internal.metaobject.DynamicInvokeResult;
import org.gradle.internal.metaobject.DynamicObject;
import org.gradle.internal.reflect.Instantiator;
import org.gradle.util.ConfigureUtil;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import static java.lang.String.format;
import static org.gradle.api.reflect.TypeOf.typeOf;
import static org.gradle.internal.Cast.uncheckedCast;
public class DefaultConvention implements Convention, ExtensionContainerInternal {
private final Map<String, Object> plugins = new LinkedHashMap<String, Object>();
private final DefaultConvention.ExtensionsDynamicObject extensionsDynamicObject = new ExtensionsDynamicObject();
private final ExtensionsStorage extensionsStorage = new ExtensionsStorage();
private final ExtraPropertiesExtension extraProperties = new DefaultExtraPropertiesExtension();
private final Instantiator instantiator;
private Map<Object, BeanDynamicObject> dynamicObjects;
/**
* This method should not be used in runtime code proper as means that the convention cannot create
* dynamic extensions.
*
* It's here for backwards compatibility with our tests and for convenience.
*
* @see #DefaultConvention(org.gradle.internal.reflect.Instantiator)
*/
public DefaultConvention() {
this(null);
}
public DefaultConvention(Instantiator instantiator) {
this.instantiator = instantiator;
add(ExtraPropertiesExtension.class, ExtraPropertiesExtension.EXTENSION_NAME, extraProperties);
}
@Override
public Map<String, Object> getPlugins() {
return plugins;
}
@Override
public DynamicObject getExtensionsAsDynamicObject() {
return extensionsDynamicObject;
}
private Instantiator getInstantiator() {
if (instantiator == null) {
throw new GradleException("request for DefaultConvention.instantiator when the object was constructed without a convention");
}
return instantiator;
}
@Override
public <T> T getPlugin(Class<T> type) {
T value = findPlugin(type);
if (value == null) {
throw new IllegalStateException(
format("Could not find any convention object of type %s.", type.getSimpleName()));
}
return value;
}
@Override
public <T> T findPlugin(Class<T> type) throws IllegalStateException {
List<T> values = new ArrayList<T>();
for (Object object : plugins.values()) {
if (type.isInstance(object)) {
values.add(type.cast(object));
}
}
if (values.isEmpty()) {
return null;
}
if (values.size() > 1) {
throw new IllegalStateException(
format("Found multiple convention objects of type %s.", type.getSimpleName()));
}
return values.get(0);
}
@Override
public void add(String name, Object extension) {
if (extension instanceof Class) {
create(name, (Class<?>) extension);
} else {
addWithDefaultPublicType(extension.getClass(), name, extension);
}
}
@Override
public <T> void add(Class<T> publicType, String name, T extension) {
add(typeOf(publicType), name, extension);
}
@Override
public <T> void add(TypeOf<T> publicType, String name, T extension) {
extensionsStorage.add(publicType, name, extension);
}
@Override
public <T> T create(String name, Class<T> instanceType, Object... constructionArguments) {
T instance = instantiate(instanceType, constructionArguments);
addWithDefaultPublicType(instanceType, name, instance);
return instance;
}
@Override
public <T> T create(Class<T> publicType, String name, Class<? extends T> instanceType, Object... constructionArguments) {
return create(typeOf(publicType), name, instanceType, constructionArguments);
}
@Override
public <T> T create(TypeOf<T> publicType, String name, Class<? extends T> instanceType, Object... constructionArguments) {
T instance = instantiate(instanceType, constructionArguments);
add(publicType, name, instance);
return instance;
}
@Override
public ExtraPropertiesExtension getExtraProperties() {
return extraProperties;
}
@Override
public Map<String, TypeOf<?>> getSchema() {
return extensionsStorage.getSchema();
}
@Override
public <T> T getByType(Class<T> type) {
return getByType(typeOf(type));
}
@Override
public <T> T getByType(TypeOf<T> type) {
return extensionsStorage.getByType(type);
}
@Override
public <T> T findByType(Class<T> type) {
return findByType(typeOf(type));
}
@Override
public <T> T findByType(TypeOf<T> type) {
return extensionsStorage.findByType(type);
}
@Override
public Object getByName(String name) {
return extensionsStorage.getByName(name);
}
@Override
public Object findByName(String name) {
return extensionsStorage.findByName(name);
}
@Override
public <T> void configure(Class<T> type, Action<? super T> action) {
configure(typeOf(type), action);
}
@Override
public <T> void configure(TypeOf<T> type, Action<? super T> action) {
extensionsStorage.configureExtension(type, action);
}
@Override
public <T> void configure(String name, Action<? super T> action) {
extensionsStorage.configureExtension(name, action);
}
@Override
public Map<String, Object> getAsMap() {
return extensionsStorage.getAsMap();
}
public Object propertyMissing(String name) {
return getByName(name);
}
public void propertyMissing(String name, Object value) {
checkExtensionIsNotReassigned(name);
add(name, value);
}
private void addWithDefaultPublicType(Class<?> defaultType, String name, Object extension) {
add(preferredPublicTypeOf(extension, defaultType), name, extension);
}
private TypeOf<Object> preferredPublicTypeOf(Object extension, Class<?> defaultType) {
if (extension instanceof HasPublicType) {
return uncheckedCast(((HasPublicType) extension).getPublicType());
}
return TypeOf.<Object>typeOf(defaultType);
}
private <T> T instantiate(Class<? extends T> instanceType, Object[] constructionArguments) {
return getInstantiator().newInstance(instanceType, constructionArguments);
}
private class ExtensionsDynamicObject extends AbstractDynamicObject {
@Override
public String getDisplayName() {
return "extensions";
}
@Override
public boolean hasProperty(String name) {
if (extensionsStorage.hasExtension(name)) {
return true;
}
for (Object object : plugins.values()) {
if (asDynamicObject(object).hasProperty(name)) {
return true;
}
}
return false;
}
@Override
public Map<String, Object> getProperties() {
Map<String, Object> properties = new HashMap<String, Object>();
List<Object> reverseOrder = new ArrayList<Object>(plugins.values());
Collections.reverse(reverseOrder);
for (Object object : reverseOrder) {
properties.putAll(asDynamicObject(object).getProperties());
}
properties.putAll(extensionsStorage.getAsMap());
return properties;
}
@Override
public DynamicInvokeResult tryGetProperty(String name) {
Object extension = extensionsStorage.findByName(name);
if (extension != null) {
return DynamicInvokeResult.found(extension);
}
for (Object object : plugins.values()) {
DynamicObject dynamicObject = asDynamicObject(object).withNotImplementsMissing();
DynamicInvokeResult result = dynamicObject.tryGetProperty(name);
if (result.isFound()) {
return result;
}
}
return DynamicInvokeResult.notFound();
}
public Object propertyMissing(String name) {
return getProperty(name);
}
@Override
public DynamicInvokeResult trySetProperty(String name, Object value) {
checkExtensionIsNotReassigned(name);
for (Object object : plugins.values()) {
BeanDynamicObject dynamicObject = asDynamicObject(object).withNotImplementsMissing();
DynamicInvokeResult result = dynamicObject.trySetProperty(name, value);
if (result.isFound()) {
return result;
}
}
return DynamicInvokeResult.notFound();
}
public void propertyMissing(String name, Object value) {
setProperty(name, value);
}
@Override
public DynamicInvokeResult tryInvokeMethod(String name, Object... args) {
if (isConfigureExtensionMethod(name, args)) {
return DynamicInvokeResult.found(configureExtension(name, args));
}
for (Object object : plugins.values()) {
BeanDynamicObject dynamicObject = asDynamicObject(object).withNotImplementsMissing();
DynamicInvokeResult result = dynamicObject.tryInvokeMethod(name, args);
if (result.isFound()) {
return result;
}
}
return DynamicInvokeResult.notFound();
}
public Object methodMissing(String name, Object args) {
return invokeMethod(name, (Object[]) args);
}
@Override
public boolean hasMethod(String name, Object... args) {
if (isConfigureExtensionMethod(name, args)) {
return true;
}
for (Object object : plugins.values()) {
BeanDynamicObject dynamicObject = asDynamicObject(object);
if (dynamicObject.hasMethod(name, args)) {
return true;
}
}
return false;
}
private BeanDynamicObject asDynamicObject(Object object) {
if (dynamicObjects == null) {
dynamicObjects = Maps.newIdentityHashMap();
}
BeanDynamicObject dynamicObject = dynamicObjects.get(object);
if (dynamicObject == null) {
dynamicObject = new BeanDynamicObject(object);
dynamicObjects.put(object, dynamicObject);
}
return dynamicObject;
}
}
private void checkExtensionIsNotReassigned(String name) {
if (extensionsStorage.hasExtension(name)) {
throw new IllegalArgumentException(
format("There's an extension registered with name '%s'. You should not reassign it via a property setter.", name));
}
}
private boolean isConfigureExtensionMethod(String name, Object[] args) {
return args.length == 1 && args[0] instanceof Closure && extensionsStorage.hasExtension(name);
}
private Object configureExtension(String name, Object[] args) {
Closure closure = (Closure) args[0];
Action<Object> action = ConfigureUtil.configureUsing(closure);
return extensionsStorage.configureExtension(name, action);
}
}