plugins/InspectionGadgets/src/com/siyeh/ig/bugs/ResultOfObjectAllocationIgnoredInspection.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.bugs;
  17
  18 import com.intellij.psi.PsiExpression;
  19 import com.intellij.psi.PsiExpressionStatement;
  20 import com.intellij.psi.PsiNewExpression;
  21 import com.siyeh.InspectionGadgetsBundle;
  22 import com.siyeh.ig.BaseInspection;
  23 import com.siyeh.ig.BaseInspectionVisitor;
  24 import org.jetbrains.annotations.NotNull;
  25
  26 public class ResultOfObjectAllocationIgnoredInspection
  27         extends BaseInspection {
  28
  29     @NotNull
  30     public String getDisplayName() {
  31         return InspectionGadgetsBundle.message(
  32                 "result.of.object.allocation.ignored.display.name");
  33     }
  34
  35     @NotNull
  36     public String buildErrorString(Object... infos) {
  37         return InspectionGadgetsBundle.message(
  38                 "result.of.object.allocation.ignored.problem.descriptor");
  39     }
  40
  41     public BaseInspectionVisitor buildVisitor() {
  42         return new IgnoreResultOfCallVisitor();
  43     }
  44
  45     private static class IgnoreResultOfCallVisitor
  46             extends BaseInspectionVisitor {
  47
  48         @Override public void visitExpressionStatement(
  49                 @NotNull PsiExpressionStatement statement) {
  50             super.visitExpressionStatement(statement);
  51             final PsiExpression expression = statement.getExpression();
  52             if (!(expression instanceof PsiNewExpression)) {
  53                 return;
  54             }
  55             final PsiNewExpression newExpression =
  56                     (PsiNewExpression) expression;
  57             final PsiExpression[] arrayDimensions =
  58                     newExpression.getArrayDimensions();
  59             if (arrayDimensions.length != 0) {
  60                 return;
  61             }
  62             if (newExpression.getArrayInitializer() != null) {
  63                 return;
  64             }
  65             registerNewExpressionError(newExpression);
  66         }
  67     }
  68 }