/*
* Copyright 2005-2013 Sixth and Red River Software, Bas Leijdekkers
*
* 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 com.sixrr.stockmetrics.packageCalculators;
import com.intellij.psi.JavaRecursiveElementVisitor;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiElementVisitor;
import com.intellij.psi.PsiPackage;
import com.sixrr.metrics.utils.BucketedCount;
import com.sixrr.metrics.utils.ClassUtils;
import com.sixrr.stockmetrics.dependency.DependencyMap;
import java.util.Set;
public class EfferentCouplingCalculator extends PackageCalculator {
private final BucketedCount<PsiPackage> numExternalDependenciesPerPackage = new BucketedCount<PsiPackage>();
@Override
public void endMetricsRun() {
final Set<PsiPackage> packages = numExternalDependenciesPerPackage.getBuckets();
for (PsiPackage aPackage : packages) {
final int numExternalDependencies = numExternalDependenciesPerPackage.getBucketValue(aPackage);
postMetric(aPackage, numExternalDependencies);
}
}
@Override
protected PsiElementVisitor createVisitor() {
return new Visitor();
}
private class Visitor extends JavaRecursiveElementVisitor {
@Override
public void visitClass(PsiClass aClass) {
super.visitClass(aClass);
if (ClassUtils.isAnonymous(aClass)) {
return;
}
final PsiPackage referencingPackage = ClassUtils.findPackage(aClass);
if (referencingPackage == null) {
return;
}
numExternalDependenciesPerPackage.createBucket(referencingPackage);
final DependencyMap dependencyMap = getDependencyMap();
final Set<PsiPackage> packageDependencies = dependencyMap.calculatePackageDependencies(aClass);
numExternalDependenciesPerPackage.incrementBucketValue(referencingPackage, packageDependencies.size());
}
}
}