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.util.List;
  
  import com.strobel.assembler.metadata.MethodDefinition;
  import com.strobel.assembler.metadata.MethodReference;
  import com.strobel.assembler.metadata.TypeDefinition;
  import com.strobel.decompiler.ast.AstCode;
  import com.strobel.decompiler.ast.Expression;
  import com.strobel.decompiler.ast.Node;
  
  import one.util.huntbugs.db.Hierarchy.TypeHierarchy;
  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.MethodVisitor;
  import one.util.huntbugs.registry.anno.WarningDefinition;
  import one.util.huntbugs.util.NodeChain;
  import one.util.huntbugs.util.Types;
  
  /**
   * @author Tagir Valeev
   *
   */
  @WarningDefinition(category = "Multithreading", name = "StartInConstructor", maxScore = 50)
  public class StartInConstructor {
      @MethodVisitor
      public boolean checkMethod(MethodDefinition md, TypeDefinition td) {
          return td.isPublic() && !td.isFinal() && !md.isPrivate() && !md.isPackagePrivate();
      }
  
      @AstVisitor(nodes = AstNodes.EXPRESSIONS, methodName = "<init>")
      public boolean visit(Expression expr, NodeChain nc, MethodContext mc, TypeHierarchy th) {
          if (expr.getCode() == AstCode.InvokeVirtual) {
              MethodReference mr = (MethodReference) expr.getOperand();
              if (mr.getName().equals("start") && mr.getSignature().equals("()V")) {
                  if (Types.isInstance(mr.getDeclaringType(), "java/lang/Thread")) {
                      int priority = 0;
                      if (th != null) {
                          if (!th.hasSubClasses())
                              priority += 10;
                          else if (!th.hasSubClassesOutOfPackage())
                              priority += 5;
                      }
                      List<Node> body = nc.getRoot().getBody();
                      if (body.get(body.size() - 1) == expr)
                          priority += 10;
                      mc.report("StartInConstructor", priority, expr);
                  }
              }
          }
          return true;
      }
  }
  