plugins/InspectionGadgets/src/com/siyeh/ig/portability/UseOfAWTPeerClassInspection.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.portability;
  17
  18 import com.intellij.psi.*;
  19 import com.siyeh.InspectionGadgetsBundle;
  20 import com.siyeh.ig.BaseInspection;
  21 import com.siyeh.ig.BaseInspectionVisitor;
  22 import com.siyeh.ig.psiutils.ClassUtils;
  23 import org.jetbrains.annotations.NotNull;
  24
  25 public class UseOfAWTPeerClassInspection extends BaseInspection {
  26
  27     @NotNull
  28     public String getDisplayName() {
  29         return InspectionGadgetsBundle.message(
  30                 "use.of.awt.peer.class.display.name");
  31     }
  32
  33     @NotNull
  34     public String buildErrorString(Object... infos) {
  35         return InspectionGadgetsBundle.message(
  36                 "use.of.awt.peer.class.problem.descriptor");
  37     }
  38
  39     public BaseInspectionVisitor buildVisitor() {
  40         return new UseOfAWTPeerClassVisitor();
  41     }
  42
  43     private static class UseOfAWTPeerClassVisitor extends BaseInspectionVisitor {
  44
  45
  46         @Override public void visitVariable(@NotNull PsiVariable variable) {
  47             super.visitVariable(variable);
  48             final PsiType type = variable.getType();
  49             if (!(type instanceof PsiClassType)) {
  50                 return;
  51             }
  52             final PsiType deepComponentType = type.getDeepComponentType();
  53             if(!(deepComponentType instanceof PsiClassType)) {
  54                 return;
  55             }
  56             final PsiClassType classType = (PsiClassType)deepComponentType;
  57             final PsiClass resolveClass = classType.resolve();
  58             if(resolveClass == null) {
  59                 return;
  60             }
  61             if(resolveClass.isEnum()||resolveClass.isInterface() ||
  62                     resolveClass.isAnnotationType()) {
  63                 return;
  64             }
  65             if(resolveClass instanceof PsiTypeParameter){
  66                 return;
  67             }
  68             if(!ClassUtils.isSubclass(resolveClass,
  69                     "java.awt.peer.ComponentPeer")) {
  70                 return;
  71             }
  72             final PsiTypeElement typeElement = variable.getTypeElement();
  73             if (typeElement == null) {
  74                 return;
  75             }
  76             registerError(typeElement);
  77         }
  78
  79         @Override public void visitNewExpression(
  80                 @NotNull PsiNewExpression newExpression) {
  81             super.visitNewExpression(newExpression);
  82             final PsiType type = newExpression.getType();
  83             if (type == null) {
  84                 return;
  85             }
  86             if(!(type instanceof PsiClassType)) {
  87                 return;
  88             }
  89             final PsiClass resolveClass = ((PsiClassType) type).resolve();
  90             if(resolveClass == null) {
  91                 return;
  92             }
  93             if(resolveClass.isEnum() || resolveClass.isInterface() ||
  94                     resolveClass.isAnnotationType()) {
  95                 return;
  96             }
  97             if(resolveClass instanceof PsiTypeParameter) {
  98                 return;
  99             }
 100             if(!ClassUtils.isSubclass(resolveClass,
 101                     "java.awt.peer.ComponentPeer")) {
 102                 return;
 103             }
 104             registerNewExpressionError(newExpression);
 105         }
 106     }
 107 }