| /* |
| * Copyright 2003-2010 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.performance; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.TypeUtils; |
| import com.intellij.codeInspection.ui.SingleCheckboxOptionsPanel; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| |
| public class StringReplaceableByStringBufferInspection extends BaseInspection { |
| |
| @SuppressWarnings({"PublicField"}) |
| public boolean onlyWarnOnLoop = true; |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "NonConstantStringShouldBeStringBuffer"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "string.replaceable.by.string.buffer.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "string.replaceable.by.string.buffer.problem.descriptor"); |
| } |
| |
| @Override |
| public JComponent createOptionsPanel() { |
| return new SingleCheckboxOptionsPanel(InspectionGadgetsBundle.message( |
| "string.replaceable.by.string.buffer.in.loop.option"), |
| this, "onlyWarnOnLoop"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new StringReplaceableByStringBufferVisitor(); |
| } |
| |
| private class StringReplaceableByStringBufferVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitLocalVariable( |
| @NotNull PsiLocalVariable variable) { |
| super.visitLocalVariable(variable); |
| final PsiCodeBlock codeBlock = |
| PsiTreeUtil.getParentOfType(variable, PsiCodeBlock.class); |
| if (codeBlock == null) { |
| return; |
| } |
| final PsiType type = variable.getType(); |
| if (!TypeUtils.typeEquals(CommonClassNames.JAVA_LANG_STRING, |
| type)) { |
| return; |
| } |
| if (!variableIsAppendedTo(variable, codeBlock)) { |
| return; |
| } |
| registerVariableError(variable); |
| } |
| |
| public boolean variableIsAppendedTo(PsiVariable variable, |
| PsiElement context) { |
| final StringVariableIsAppendedToVisitor visitor = |
| new StringVariableIsAppendedToVisitor(variable, |
| onlyWarnOnLoop); |
| context.accept(visitor); |
| return visitor.isAppendedTo(); |
| } |
| } |
| } |