/*
* Copyright 2010 Henry Coles
*
* 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.pitest.mutationtest.engine.gregor.config;
import java.util.Collection;
import org.pitest.functional.F;
import org.pitest.functional.predicate.Predicate;
import org.pitest.functional.prelude.Prelude;
import org.pitest.mutationtest.MutationEngineFactory;
import org.pitest.mutationtest.engine.MutationEngine;
import org.pitest.mutationtest.engine.gregor.GregorMutationEngine;
import org.pitest.mutationtest.engine.gregor.MethodInfo;
import org.pitest.mutationtest.engine.gregor.MethodMutatorFactory;
import org.pitest.mutationtest.engine.gregor.inlinedcode.InlinedCodeFilter;
import org.pitest.mutationtest.engine.gregor.inlinedcode.InlinedFinallyBlockDetector;
import org.pitest.mutationtest.engine.gregor.inlinedcode.NoInlinedCodeDetection;
public final class GregorEngineFactory implements MutationEngineFactory {
@Override
public MutationEngine createEngine(final boolean mutateStaticInitializers,
final Predicate<String> excludedMethods,
final Collection<String> loggingClasses,
final Collection<String> mutators, final boolean detectInlinedCode) {
return createEngineWithMutators(mutateStaticInitializers, excludedMethods,
loggingClasses, createMutatorListFromArrayOrUseDefaults(mutators),
detectInlinedCode);
}
public MutationEngine createEngineWithMutators(
final boolean mutateStaticInitializers,
final Predicate<String> excludedMethods,
final Collection<String> loggingClasses,
final Collection<? extends MethodMutatorFactory> mutators,
final boolean detectInlinedCode) {
final Predicate<MethodInfo> filter = pickFilter(mutateStaticInitializers,
Prelude.not(stringToMethodInfoPredicate(excludedMethods)));
final DefaultMutationEngineConfiguration config = new DefaultMutationEngineConfiguration(
filter, loggingClasses, mutators,
inlinedCodeDetector(detectInlinedCode));
return new GregorMutationEngine(config);
}
private static InlinedCodeFilter inlinedCodeDetector(
final boolean detectInlinedCode) {
if (detectInlinedCode) {
return new InlinedFinallyBlockDetector();
} else {
return new NoInlinedCodeDetection();
}
}
private static Collection<? extends MethodMutatorFactory> createMutatorListFromArrayOrUseDefaults(
final Collection<String> mutators) {
if ((mutators != null) && !mutators.isEmpty()) {
return Mutator.fromStrings(mutators);
} else {
return Mutator.defaults();
}
}
@SuppressWarnings("unchecked")
private static Predicate<MethodInfo> pickFilter(
final boolean mutateStaticInitializers,
final Predicate<MethodInfo> excludedMethods) {
if (!mutateStaticInitializers) {
return Prelude.and(excludedMethods, notStaticInitializer());
} else {
return excludedMethods;
}
}
private static F<MethodInfo, Boolean> stringToMethodInfoPredicate(
final Predicate<String> excludedMethods) {
return new Predicate<MethodInfo>() {
@Override
public Boolean apply(final MethodInfo a) {
return excludedMethods.apply(a.getName());
}
};
}
private static Predicate<MethodInfo> notStaticInitializer() {
return new Predicate<MethodInfo>() {
@Override
public Boolean apply(final MethodInfo a) {
return !a.isStaticInitializer();
}
};
}
@Override
public String name() {
return "gregor";
}
@Override
public String description() {
return "Default mutation engine";
}
}