plugins/InspectionGadgets/src/com/siyeh/ig/threading/BusyWaitInspection.java

   1 /*
   2  * Copyright 2003-2007 Dave Griffith, Bas Leijdekkers
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.siyeh.ig.threading;
  17
  18 import com.intellij.psi.PsiMethodCallExpression;
  19 import com.intellij.psi.PsiType;
  20 import com.siyeh.InspectionGadgetsBundle;
  21 import com.siyeh.ig.BaseInspection;
  22 import com.siyeh.ig.BaseInspectionVisitor;
  23 import com.siyeh.ig.psiutils.ControlFlowUtils;
  24 import com.siyeh.ig.psiutils.MethodCallUtils;
  25 import org.jetbrains.annotations.NotNull;
  26
  27 public class BusyWaitInspection extends BaseInspection {
  28
  29     @NotNull
  30     public String getDisplayName() {
  31         return InspectionGadgetsBundle.message("busy.wait.display.name");
  32     }
  33
  34     @NotNull
  35     protected String buildErrorString(Object... infos) {
  36         return InspectionGadgetsBundle.message("busy.wait.problem.descriptor");
  37     }
  38
  39     public BaseInspectionVisitor buildVisitor() {
  40         return new BusyWaitVisitor();
  41     }
  42
  43     private static class BusyWaitVisitor extends BaseInspectionVisitor {
  44
  45         @Override public void visitMethodCallExpression(
  46                 @NotNull PsiMethodCallExpression expression) {
  47             super.visitMethodCallExpression(expression);
  48             if (!MethodCallUtils.isCallToMethod(expression, "java.lang.Thread",
  49                     PsiType.VOID, "sleep", PsiType.LONG) &&
  50                     !MethodCallUtils.isCallToMethod(expression,
  51                             "java.lang.Thread", PsiType.VOID, "sleep",
  52                             PsiType.LONG, PsiType.INT)) {
  53                 return;
  54             }
  55             if (!ControlFlowUtils.isInLoop(expression)) {
  56                 return;
  57             }
  58             registerMethodCallError(expression);
  59         }
  60     }
  61 }