content: /*
   * Copyright 2016 HuntBugs contributors
   * 
   * 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 one.util.huntbugs.detect;
  
  import java.lang.annotation.RetentionPolicy;
  
  import com.strobel.assembler.metadata.MethodReference;
  import com.strobel.assembler.metadata.TypeReference;
  import com.strobel.decompiler.ast.AstCode;
  import com.strobel.decompiler.ast.Expression;
  
  import one.util.huntbugs.db.DeclaredAnnotations;
  import one.util.huntbugs.db.DeclaredAnnotations.DeclaredAnnotation;
  import one.util.huntbugs.registry.MethodContext;
  import one.util.huntbugs.registry.anno.AstNodes;
  import one.util.huntbugs.registry.anno.AstVisitor;
  import one.util.huntbugs.registry.anno.WarningDefinition;
  import one.util.huntbugs.util.Nodes;
  import one.util.huntbugs.warning.Role.TypeRole;
  
  /**
   * @author Tagir Valeev
   *
   */
  @WarningDefinition(category = "Correctness", name = "AnnotationNoRuntimeRetention", maxScore = 75)
  public class NoRuntimeRetention {
      private static final TypeRole ANNOTATION = TypeRole.forName("ANNOTATION");
  
      @AstVisitor(nodes = AstNodes.EXPRESSIONS)
      public void visit(Expression expr, MethodContext mc, DeclaredAnnotations da) {
          if (expr.getCode() == AstCode.InvokeVirtual && expr.getArguments().size() == 2) {
              MethodReference mr = (MethodReference) expr.getOperand();
              if ((mr.getDeclaringType().getInternalName().startsWith("java/lang/reflect/") || mr.getDeclaringType()
                      .getInternalName().equals("java/lang/Class")) && mr.getName().contains("Annotation")) {
                  Object constant = Nodes.getConstant(expr.getArguments().get(1));
                  if (constant instanceof TypeReference) {
                      TypeReference tr = (TypeReference) constant;
                      DeclaredAnnotation annot = da.get(tr);
                      if (annot != null && annot.getPolicy() != RetentionPolicy.RUNTIME) {
                          mc.report("AnnotationNoRuntimeRetention", 0, expr, ANNOTATION.create(tr));
                      }
                  }
              }
          }
      }
  }
  