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/**
 * Copyright © 2013 Sven Ruppert ([email protected])
 *
 * 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.reflections.scanners;

import org.reflections.adapters.MetadataAdapter;

import java.util.List;

/**
 * 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 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));
          }
        }
      }
    }
  }
}