plugins/InspectionGadgets/src/com/siyeh/ig/methodmetrics/NestingDepthInspection.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.methodmetrics;
  17
  18 import com.intellij.psi.PsiMethod;
  19 import com.siyeh.InspectionGadgetsBundle;
  20 import com.siyeh.ig.BaseInspectionVisitor;
  21 import org.jetbrains.annotations.NotNull;
  22
  23 public class NestingDepthInspection extends MethodMetricInspection {
  24
  25     @NotNull
  26     public String getID() {
  27         return "OverlyNestedMethod";
  28     }
  29
  30     @NotNull
  31     public String getDisplayName() {
  32         return InspectionGadgetsBundle.message("nesting.depth.display.name");
  33     }
  34
  35     protected int getDefaultLimit() {
  36         return 5;
  37     }
  38
  39     protected String getConfigurationLabel() {
  40         return InspectionGadgetsBundle.message("nesting.depth.limit.option");
  41     }
  42
  43     @NotNull
  44     public String buildErrorString(Object... infos) {
  45         final Integer nestingDepth = (Integer)infos[0];
  46         return InspectionGadgetsBundle.message(
  47                 "nesting.depth.problem.descriptor", nestingDepth);
  48     }
  49
  50     public BaseInspectionVisitor buildVisitor() {
  51         return new NestingDepthMethodVisitor();
  52     }
  53
  54     private class NestingDepthMethodVisitor extends BaseInspectionVisitor {
  55
  56         @Override public void visitMethod(@NotNull PsiMethod method) {
  57             // note: no call to super
  58             if (method.getNameIdentifier() == null) {
  59                 return;
  60             }
  61             final NestingDepthVisitor visitor = new NestingDepthVisitor();
  62             method.accept(visitor);
  63             final int count = visitor.getMaximumDepth();
  64             if (count <= getLimit()) {
  65                 return;
  66             }
  67             registerMethodError(method, Integer.valueOf(count));
  68         }
  69     }
  70 }