/*
 * Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
 *
 * 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.jboss.errai.reflections.scanners;

import java.util.List;

import org.jboss.errai.reflections.adapters.MetadataAdapter;

/** scans methods/constructors and indexes parameters, return type and parameter annotations */
@SuppressWarnings("unchecked")
public class MethodParameterScanner extends AbstractScanner {

    @Override
    public void scan(Object cls) {
        final MetadataAdapter md = getMetadataAdapter();

        for (Object method : md.getMethods(cls)) {

            String signature = md.getParameterNames(method).toString();
            if (acceptResult(signature)) {
                getStore().put(signature, md.getMethodFullKey(cls, method));
            }

            String returnTypeName = md.getReturnTypeName(method);
            if (acceptResult(returnTypeName)) {
                getStore().put(returnTypeName, md.getMethodFullKey(cls, method));
            }

            List<String> parameterNames = md.getParameterNames(method);
            for (int i = 0; i < parameterNames.size(); i++) {
                for (Object paramAnnotation : md.getParameterAnnotationNames(method, i)) {
                    if (acceptResult((String) paramAnnotation)) {
                        getStore().put((String) paramAnnotation, md.getMethodFullKey(cls, method));
                    }
                }
            }
        }
    }
}