/*
 * Copyright 2005, Sixth and Red River Software
 *
 *  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.classCalculators;

import com.intellij.psi.*;
import com.sixrr.metrics.utils.ClassUtils;

public class NumTypeParametersClassCalculator extends ClassCalculator {
    @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) || aClass.isInterface()) {
                return;
            }
            final PsiTypeParameterList typeParams = aClass.getTypeParameterList();
            if (typeParams == null) {
                postMetric(aClass, 0);
            } else {
                final PsiTypeParameter[] parameters = typeParams.getTypeParameters();
                if (parameters == null) {
                    postMetric(aClass, 0);
                } else {
                    postMetric(aClass, parameters.length);
                }
            }
        }
    }
}