| /* |
| * Copyright 2003-2007 Dave Griffith, Bas Leijdekkers |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.siyeh.ig.j2me; |
| |
| import com.intellij.psi.*; |
| import com.siyeh.HardcodedMethodConstants; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ArrayLengthInLoopConditionInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "array.length.in.loop.condition.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "array.length.in.loop.condition.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ArrayLengthInLoopConditionVisitor(); |
| } |
| |
| private static class ArrayLengthInLoopConditionVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitForStatement(@NotNull PsiForStatement statement) { |
| super.visitForStatement(statement); |
| final PsiExpression condition = statement.getCondition(); |
| if (condition == null) { |
| return; |
| } |
| checkForMethodCalls(condition); |
| } |
| |
| @Override |
| public void visitWhileStatement(@NotNull PsiWhileStatement statement) { |
| super.visitWhileStatement(statement); |
| final PsiExpression condition = statement.getCondition(); |
| if (condition == null) { |
| return; |
| } |
| checkForMethodCalls(condition); |
| } |
| |
| @Override |
| public void visitDoWhileStatement( |
| @NotNull PsiDoWhileStatement statement) { |
| super.visitDoWhileStatement(statement); |
| final PsiExpression condition = statement.getCondition(); |
| if (condition == null) { |
| return; |
| } |
| checkForMethodCalls(condition); |
| } |
| |
| private void checkForMethodCalls(PsiExpression condition) { |
| final PsiElementVisitor visitor = |
| new JavaRecursiveElementVisitor() { |
| |
| @Override |
| public void visitReferenceExpression( |
| @NotNull PsiReferenceExpression expression) { |
| super.visitReferenceExpression(expression); |
| final String name = expression.getReferenceName(); |
| if (!HardcodedMethodConstants.LENGTH.equals(name)) { |
| return; |
| } |
| final PsiExpression qualifier = |
| expression.getQualifierExpression(); |
| if (qualifier == null) { |
| return; |
| } |
| final PsiType type = qualifier.getType(); |
| if (!(type instanceof PsiArrayType)) { |
| return; |
| } |
| final PsiElement lengthElement = |
| expression.getReferenceNameElement(); |
| if (lengthElement == null) { |
| return; |
| } |
| registerError(lengthElement); |
| } |
| }; |
| condition.accept(visitor); |
| } |
| } |
| } |