| /* |
| * Copyright 2000-2010 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: 07-Jun-2010 |
| */ |
| package com.intellij.refactoring.extractclass; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.PsiSearchScopeUtil; |
| import com.intellij.psi.search.SearchScope; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.refactoring.typeMigration.TypeConversionDescriptorBase; |
| import com.intellij.refactoring.typeMigration.TypeMigrationLabeler; |
| import com.intellij.refactoring.typeMigration.rules.TypeConversionRule; |
| |
| import java.util.List; |
| |
| public class EnumTypeConversionRule extends TypeConversionRule { |
| private final List<PsiField> myEnumConstants; |
| |
| public EnumTypeConversionRule(List<PsiField> enumConstants) { |
| myEnumConstants = enumConstants; |
| } |
| |
| @Override |
| public TypeConversionDescriptorBase findConversion(PsiType from, |
| PsiType to, |
| PsiMember member, |
| PsiExpression context, |
| TypeMigrationLabeler labeler) { |
| final PsiMethodCallExpression callExpression = PsiTreeUtil.getParentOfType(context, PsiMethodCallExpression.class, false); |
| if (callExpression != null) { |
| final PsiMethod resolved = callExpression.resolveMethod(); |
| if (resolved != null) { |
| final SearchScope searchScope = labeler.getRules().getSearchScope(); |
| if (!PsiSearchScopeUtil.isInScope(searchScope, resolved)) { |
| return null; |
| } |
| } |
| } |
| final PsiField field = PsiTreeUtil.getParentOfType(context, PsiField.class); |
| if (field != null && |
| !myEnumConstants.contains(field) && |
| field.hasModifierProperty(PsiModifier.STATIC) && |
| field.hasModifierProperty(PsiModifier.FINAL) && |
| field.hasInitializer()) { |
| return null; |
| } |
| final PsiClass toClass = PsiUtil.resolveClassInType(to); |
| if (toClass != null && toClass.isEnum()) { |
| final PsiMethod[] constructors = toClass.getConstructors(); |
| if (constructors.length == 1) { |
| final PsiMethod constructor = constructors[0]; |
| final PsiParameter[] parameters = constructor.getParameterList().getParameters(); |
| if (parameters.length == 1) { |
| if (TypeConversionUtil.isAssignable(parameters[0].getType(), from)) { |
| return new TypeConversionDescriptorBase(); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| } |