| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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. |
| */ |
| |
| /* |
| * User: anna |
| * Date: 03-Sep-2008 |
| */ |
| package com.intellij.refactoring.util; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Set; |
| |
| public class EnumConstantsUtil { |
| private EnumConstantsUtil() { |
| } |
| |
| public static boolean isSuitableForEnumConstant(PsiType constantType, PsiClass enumClass) { |
| if (enumClass != null && enumClass.isEnum()) { |
| for (PsiMethod constructor : enumClass.getConstructors()) { |
| final PsiParameter[] parameters = constructor.getParameterList().getParameters(); |
| if (parameters.length == 1 && TypeConversionUtil.isAssignable(parameters[0].getType(), constantType)) return true; |
| } |
| } |
| return false; |
| } |
| |
| public static PsiEnumConstant createEnumConstant(PsiClass enumClass, String constantName, PsiExpression initializerExpr) throws |
| IncorrectOperationException { |
| final PsiElementFactory elementFactory = JavaPsiFacade.getInstance(enumClass.getProject()).getElementFactory(); |
| final String enumConstantText = initializerExpr != null ? constantName + "(" + initializerExpr.getText() + ")" : constantName; |
| return elementFactory.createEnumConstantFromText(enumConstantText, enumClass); |
| } |
| |
| public static PsiEnumConstant createEnumConstant(PsiClass enumClass, PsiLocalVariable local, final String fieldName) throws IncorrectOperationException { |
| return createEnumConstant(enumClass, fieldName, local.getInitializer()); |
| } |
| |
| @Nullable |
| public static PsiStatement isEnumSwitch(final PsiSwitchStatement switchStatement, |
| final PsiType enumValueType, |
| final Set<Object> enumValues) { |
| final PsiExpression expression = switchStatement.getExpression(); |
| if (expression != null) { |
| final PsiType expressionType = expression.getType(); |
| if (expressionType != null && !TypeConversionUtil.isAssignable(expressionType, enumValueType)) { |
| return switchStatement; |
| } |
| final PsiConstantEvaluationHelper evaluationHelper = |
| JavaPsiFacade.getInstance(expression.getProject()).getConstantEvaluationHelper(); |
| final PsiCodeBlock body = switchStatement.getBody(); |
| if (body != null) { |
| for (PsiStatement statement : body.getStatements()) { |
| if (statement instanceof PsiSwitchLabelStatement) { |
| final PsiSwitchLabelStatement labelStatement = (PsiSwitchLabelStatement)statement; |
| final Object caseValue = evaluationHelper.computeConstantExpression(labelStatement.getCaseValue()); |
| if (caseValue != null && !enumValues.contains(caseValue)) return statement; |
| } |
| } |
| return null; |
| } |
| } |
| return switchStatement; |
| } |
| } |