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 com.strobel.decompiler.ast.CatchBlock;
  import com.strobel.decompiler.ast.Expression;
  import com.strobel.decompiler.ast.Node;
  
  import one.util.huntbugs.registry.MethodContext;
  import one.util.huntbugs.registry.anno.AstVisitor;
  import one.util.huntbugs.registry.anno.WarningDefinition;
  import one.util.huntbugs.util.Nodes;
  
  /**
   * @author lan
   *
   */
  @WarningDefinition(category="RedundantCode", name="UnreachableCatch", maxScore=50)
  public class UnreachableCatch {
      @AstVisitor
      public void visit(Node node, MethodContext mc) {
          if(node instanceof CatchBlock) {
              Expression firstExpr = (Expression) Nodes.find(node, Expression.class::isInstance);
              if(firstExpr != null && !mc.isReachable(firstExpr)) {
                  mc.report("UnreachableCatch", 0, firstExpr);
              }
          }
      }
  }
  