/*
* Copyright 2016 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.attributes;
import com.google.common.collect.Lists;
import org.gradle.api.Action;
import org.gradle.api.ActionConfiguration;
import org.gradle.api.attributes.AttributeCompatibilityRule;
import org.gradle.api.attributes.CompatibilityCheckDetails;
import org.gradle.api.attributes.CompatibilityRuleChain;
import org.gradle.api.internal.DefaultActionConfiguration;
import org.gradle.internal.reflect.Instantiator;
import org.gradle.model.internal.type.ModelType;
import java.util.Comparator;
import java.util.List;
public class DefaultCompatibilityRuleChain<T> implements CompatibilityRuleChain<T>, CompatibilityRule<T> {
private static final Object[] NO_PARAMS = new Object[0];
private final List<Action<? super CompatibilityCheckDetails<T>>> rules = Lists.newArrayList();
private final Instantiator instantiator;
public DefaultCompatibilityRuleChain(Instantiator instantiator) {
this.instantiator = instantiator;
}
@Override
public void ordered(Comparator<? super T> comparator) {
Action<? super CompatibilityCheckDetails<T>> rule = AttributeMatchingRules.orderedCompatibility(comparator, false);
rules.add(rule);
}
@Override
public void reverseOrdered(Comparator<? super T> comparator) {
Action<? super CompatibilityCheckDetails<T>> rule = AttributeMatchingRules.orderedCompatibility(comparator, true);
rules.add(rule);
}
@Override
public void add(Class<? extends AttributeCompatibilityRule<T>> rule, Action<? super ActionConfiguration> configureAction) {
DefaultActionConfiguration configuration = new DefaultActionConfiguration();
configureAction.execute(configuration);
rules.add(new InstantiatingAction<T>(rule, configuration.getParams(), instantiator));
}
@Override
public void add(final Class<? extends AttributeCompatibilityRule<T>> rule) {
rules.add(new InstantiatingAction<T>(rule, NO_PARAMS, instantiator));
}
@Override
public void assumeCompatibleWhenMissing() {
// Don't care. This method will be removed shortly
}
@Override
public void execute(CompatibilityCheckResult<T> result) {
for (Action<? super CompatibilityCheckDetails<T>> rule : rules) {
rule.execute(result);
if (result.hasResult()) {
return;
}
}
}
private static class InstantiatingAction<T> implements Action<CompatibilityCheckDetails<T>> {
private final Class<? extends AttributeCompatibilityRule<T>> rule;
private final Object[] params;
private final Instantiator instantiator;
InstantiatingAction(Class<? extends AttributeCompatibilityRule<T>> rule, Object[] params, Instantiator instantiator) {
this.rule = rule;
this.params = params;
this.instantiator = instantiator;
}
@Override
public void execute(CompatibilityCheckDetails<T> details) {
try {
AttributeCompatibilityRule<T> instance = instantiator.newInstance(rule, params);
instance.execute(details);
} catch (Throwable t) {
throw new AttributeMatchException(String.format("Could not determine whether value %s is compatible with value %s using %s.", details.getProducerValue(), details.getConsumerValue(), ModelType.of(rule).getDisplayName()), t);
}
}
}
}