plugins/InspectionGadgets/src/com/siyeh/ig/methodmetrics/ParametersPerConstructorInspection.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.intellij.psi.PsiParameterList;
  20 import com.siyeh.InspectionGadgetsBundle;
  21 import com.siyeh.ig.BaseInspectionVisitor;
  22 import org.jetbrains.annotations.NotNull;
  23
  24 public class ParametersPerConstructorInspection extends MethodMetricInspection {
  25
  26     @NotNull
  27     public String getID() {
  28         return "ConstructorWithTooManyParameters";
  29     }
  30
  31     @NotNull
  32     public String getDisplayName() {
  33         return InspectionGadgetsBundle.message(
  34                 "parameters.per.constructor.display.name");
  35     }
  36
  37     @NotNull
  38     public String buildErrorString(Object... infos) {
  39         final Integer parameterCount = (Integer)infos[0];
  40         return InspectionGadgetsBundle.message(
  41                 "parameters.per.constructor.problem.descriptor", parameterCount);
  42     }
  43
  44     protected int getDefaultLimit() {
  45         return 5;
  46     }
  47
  48     protected String getConfigurationLabel() {
  49         return InspectionGadgetsBundle.message("parameter.limit.option");
  50     }
  51
  52     public BaseInspectionVisitor buildVisitor() {
  53         return new ParametersPerMethodVisitor();
  54     }
  55
  56     private class ParametersPerMethodVisitor extends BaseInspectionVisitor {
  57
  58         @Override public void visitMethod(@NotNull PsiMethod method) {
  59             // note: no call to super
  60             if (method.getNameIdentifier() == null) {
  61                 return;
  62             }
  63             if (!method.isConstructor()) {
  64                 return;
  65             }
  66             final PsiParameterList parameterList = method.getParameterList();
  67             final int parametersCount = parameterList.getParametersCount();
  68             if (parametersCount <= getLimit()) {
  69                 return;
  70             }
  71             registerMethodError(method, Integer.valueOf(parametersCount));
  72         }
  73     }
  74 }