| /* |
| * Copyright 2003-2014 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.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.TypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class StringBufferMustHaveInitialCapacityInspection |
| extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "StringBufferWithoutInitialCapacity"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "string.buffer.must.have.initial.capacity.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "string.buffer.must.have.initial.capacity.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new StringBufferInitialCapacityVisitor(); |
| } |
| |
| private static class StringBufferInitialCapacityVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitNewExpression( |
| @NotNull PsiNewExpression expression) { |
| super.visitNewExpression(expression); |
| final PsiType type = expression.getType(); |
| |
| if (!TypeUtils.typeEquals(CommonClassNames.JAVA_LANG_STRING_BUFFER, |
| type) && |
| !TypeUtils.typeEquals(CommonClassNames.JAVA_LANG_STRING_BUILDER, type)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| if (argumentList == null) { |
| return; |
| } |
| final PsiExpression[] args = argumentList.getExpressions(); |
| if (args.length != 0) { |
| return; |
| } |
| registerNewExpressionError(expression); |
| } |
| } |
| } |