/*
* 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 org.gradle.model.internal.type.ModelType;
import java.util.List;
public abstract class ModelViews {
public static <T> ModelView<T> assertType(ModelView<?> untypedView, ModelType<T> type) {
if (type.isAssignableFrom(untypedView.getType())) {
@SuppressWarnings("unchecked") ModelView<T> view = (ModelView<T>) untypedView;
return view;
} else {
// TODO better exception type
throw new IllegalArgumentException("Model view of type " + untypedView.getType() + " requested as " + type);
}
}
public static <T> ModelView<T> assertType(ModelView<?> untypedView, Class<T> type) {
return assertType(untypedView, ModelType.of(type));
}
public static <T> ModelView<T> assertType(ModelView<?> untypedView, ModelReference<T> reference) {
return assertType(untypedView, reference.getType());
}
public static <T> T getInstance(ModelView<?> untypedView, ModelReference<T> reference) {
return assertType(untypedView, reference.getType()).getInstance();
}
public static <T> T getInstance(ModelView<?> untypedView, ModelType<T> type) {
return assertType(untypedView, type).getInstance();
}
public static <T> T getInstance(ModelView<?> untypedView, Class<T> type) {
return assertType(untypedView, ModelType.of(type)).getInstance();
}
public static <T> T getInstance(List<? extends ModelView<?>> views, int index, ModelType<T> type) {
return getInstance(views.get(index), type);
}
public static <T> T getInstance(List<? extends ModelView<?>> views, int index, Class<T> type) {
return getInstance(views.get(index), type);
}
}