| /* |
| * Copyright 2000-2013 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. |
| */ |
| package org.jetbrains.plugins.groovy.intentions.other; |
| |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.JavaCodeStyleManager; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.intentions.base.Intention; |
| import org.jetbrains.plugins.groovy.intentions.base.PsiElementPredicate; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementFactory; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrSwitchStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.clauses.GrCaseLabel; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.clauses.GrCaseSection; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * @author Max Medvedev |
| */ |
| public class GrCreateMissingSwitchBranchesIntention extends Intention { |
| @Override |
| protected void processIntention(@NotNull PsiElement element, Project project, Editor editor) throws IncorrectOperationException { |
| if (!(element instanceof GrSwitchStatement)) return; |
| |
| final List<PsiEnumConstant> constants = findUnusedConstants((GrSwitchStatement)element); |
| if (constants.isEmpty()) return; |
| |
| final PsiEnumConstant first = constants.get(0); |
| final PsiClass aClass = first.getContainingClass(); |
| if (aClass == null) return; |
| String qName = aClass.getQualifiedName(); |
| |
| final GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(project); |
| PsiElement anchor = findAnchor(element); |
| for (PsiEnumConstant constant : constants) { |
| final GrCaseSection section = factory.createSwitchSection("case " + qName + "." + constant.getName() + ":\n break"); |
| final PsiElement added = element.addBefore(section, anchor); |
| |
| element.addBefore(factory.createLineTerminator(1), anchor); |
| |
| JavaCodeStyleManager.getInstance(project).shortenClassReferences(added); |
| } |
| } |
| |
| @Nullable |
| private static PsiElement findAnchor(PsiElement element) { |
| final PsiElement last = element.getLastChild(); |
| if (last != null && last.getNode().getElementType() == GroovyTokenTypes.mRCURLY) return last; |
| return null; |
| } |
| |
| @NotNull |
| @Override |
| protected PsiElementPredicate getElementPredicate() { |
| return new PsiElementPredicate() { |
| @Override |
| public boolean satisfiedBy(PsiElement element) { |
| if (!(element instanceof GrSwitchStatement)) return false; |
| |
| |
| final List<PsiEnumConstant> unused = findUnusedConstants((GrSwitchStatement)element); |
| return !unused.isEmpty(); |
| } |
| }; |
| } |
| |
| private static List<PsiEnumConstant> findUnusedConstants(GrSwitchStatement switchStatement) { |
| final GrExpression condition = switchStatement.getCondition(); |
| if (condition == null) return Collections.emptyList(); |
| |
| final PsiType type = condition.getType(); |
| if (!(type instanceof PsiClassType)) return Collections.emptyList(); |
| |
| final PsiClass resolved = ((PsiClassType)type).resolve(); |
| if (resolved == null || !resolved.isEnum()) return Collections.emptyList(); |
| |
| final PsiField[] fields = resolved.getFields(); |
| final List<PsiEnumConstant> constants = ContainerUtil.findAll(fields, PsiEnumConstant.class); |
| |
| final GrCaseSection[] sections = switchStatement.getCaseSections(); |
| for (GrCaseSection section : sections) { |
| for (GrCaseLabel label : section.getCaseLabels()) { |
| final GrExpression value = label.getValue(); |
| if (value instanceof GrReferenceExpression) { |
| final PsiElement r = ((GrReferenceExpression)value).resolve(); |
| constants.remove(r); |
| } |
| } |
| } |
| return constants; |
| } |
| } |