| /* |
| * 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.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.pom.java.LanguageLevel; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ig.psiutils.ClassUtils; |
| import com.siyeh.ig.psiutils.ParenthesesUtils; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class BooleanConstructorInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "BooleanConstructorCall"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("boolean.constructor.display.name"); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("boolean.constructor.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new BooleanConstructorVisitor(); |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| return new BooleanConstructorFix(); |
| } |
| |
| private static class BooleanConstructorFix extends InspectionGadgetsFix { |
| |
| private static final String TRUE = '\"' + PsiKeyword.TRUE + '\"'; |
| private static final String FALSE = '\"' + PsiKeyword.FALSE + '\"'; |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("boolean.constructor.simplify.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) { |
| final PsiElement element = descriptor.getPsiElement().getParent(); |
| if (!(element instanceof PsiNewExpression)) { |
| return; |
| } |
| final PsiNewExpression expression = (PsiNewExpression)element; |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| if (argumentList == null) { |
| return; |
| } |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length != 1) { |
| return; |
| } |
| final PsiExpression argument = arguments[0]; |
| final String text = argument.getText(); |
| final LanguageLevel languageLevel = PsiUtil.getLanguageLevel(expression); |
| @NonNls final String newExpression; |
| if (PsiKeyword.TRUE.equals(text) || TRUE.equalsIgnoreCase(text)) { |
| newExpression = "java.lang.Boolean.TRUE"; |
| } |
| else if (PsiKeyword.FALSE.equals(text) || FALSE.equalsIgnoreCase(text)) { |
| newExpression = "java.lang.Boolean.FALSE"; |
| } |
| else if (languageLevel.equals(LanguageLevel.JDK_1_3)) { |
| newExpression = buildText(argument, false); |
| } |
| else { |
| final PsiClass booleanClass = ClassUtils.findClass(CommonClassNames.JAVA_LANG_BOOLEAN, argument); |
| boolean methodFound = false; |
| if (booleanClass != null) { |
| final PsiMethod[] methods = booleanClass.findMethodsByName("valueOf", false); |
| for (PsiMethod method : methods) { |
| final PsiParameterList parameterList = method.getParameterList(); |
| final PsiParameter[] parameters = parameterList.getParameters(); |
| if (parameters.length == 0) { |
| continue; |
| } |
| final PsiParameter parameter = parameters[0]; |
| final PsiType type = parameter.getType(); |
| if (PsiType.BOOLEAN.equals(type)) { |
| methodFound = true; |
| break; |
| } |
| } |
| } |
| newExpression = buildText(argument, methodFound); |
| } |
| PsiReplacementUtil.replaceExpression(expression, newExpression); |
| } |
| |
| @NonNls |
| private static String buildText(PsiExpression argument, boolean useValueOf) { |
| final String text = argument.getText(); |
| final PsiType argumentType = argument.getType(); |
| if (!useValueOf && PsiType.BOOLEAN.equals(argumentType)) { |
| if (ParenthesesUtils.getPrecedence(argument) > ParenthesesUtils.CONDITIONAL_PRECEDENCE) { |
| return text + "?java.lang.fBoolean.TRUE:java.lang.Boolean.FALSE"; |
| } |
| else { |
| return '(' + text + ")?java.lang.Boolean.TRUE:java.lang.Boolean.FALSE"; |
| } |
| } |
| else { |
| return "java.lang.Boolean.valueOf(" + text + ')'; |
| } |
| } |
| } |
| |
| private static class BooleanConstructorVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitNewExpression(@NotNull PsiNewExpression expression) { |
| super.visitNewExpression(expression); |
| final PsiType type = expression.getType(); |
| if (type == null || !type.equalsToText(CommonClassNames.JAVA_LANG_BOOLEAN)) { |
| return; |
| } |
| final PsiClass aClass = ClassUtils.getContainingClass(expression); |
| if (aClass != null) { |
| final String qualifiedName = aClass.getQualifiedName(); |
| if (CommonClassNames.JAVA_LANG_BOOLEAN.equals(qualifiedName)) { |
| return; |
| } |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| if (argumentList == null) { |
| return; |
| } |
| final PsiExpression[] expressions = argumentList.getExpressions(); |
| if (expressions.length != 1) { |
| return; |
| } |
| registerNewExpressionError(expression); |
| } |
| } |
| } |