content: package act.util;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2018 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.app.App;
  import act.app.AppByteCodeScannerBase;
  import act.asm.AnnotationVisitor;
  import act.asm.MethodVisitor;
  
  public class MethodAnnotationDetector extends AppByteCodeScannerBase {
  
      @Override
      protected boolean shouldScan(String className) {
          return true;
      }
  
      @Override
      public ByteCodeVisitor byteCodeVisitor() {
          final ClassInfoRepository classInfoRepository = App.instance().classLoader().classInfoRepository();
          return new ByteCodeVisitor() {
  
              private String classInternalName;
  
              @Override
              public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
                  classInternalName = name;
                  super.visit(version, access, name, signature, superName, interfaces);
              }
  
              @Override
              public MethodVisitor visitMethod(int access, final String name, final String desc, String signature, String[] exceptions) {
                  MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
                  if (!AsmTypes.isPublic(access)) {
                      return mv;
                  }
                  return new MethodVisitor(ASM5, mv) {
                      @Override
                      public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
                          classInfoRepository.registerMethodAnnotationLookup(desc, classInternalName, name, desc);
                          return super.visitAnnotation(desc, visible);
                      }
                  };
              }
          };
      }
  
      @Override
      public void scanFinished(String className) {
      }
  }
  