| /* |
| * Copyright 2000-2014 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.conversions; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.ui.DialogWrapper; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.searches.MethodReferencesSearch; |
| import com.intellij.psi.search.searches.ReferencesSearch; |
| import com.intellij.psi.util.MethodSignature; |
| import com.intellij.psi.util.MethodSignatureUtil; |
| import com.intellij.refactoring.ui.ConflictsDialog; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.containers.HashSet; |
| import com.intellij.util.containers.MultiMap; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.plugins.groovy.GroovyLanguage; |
| import org.jetbrains.plugins.groovy.intentions.GroovyIntentionsBundle; |
| import org.jetbrains.plugins.groovy.intentions.base.Intention; |
| import org.jetbrains.plugins.groovy.intentions.base.PsiElementPredicate; |
| import org.jetbrains.plugins.groovy.lang.documentation.GroovyPresentationUtil; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementFactory; |
| import org.jetbrains.plugins.groovy.lang.psi.api.auxiliary.modifiers.GrModifier; |
| import org.jetbrains.plugins.groovy.lang.psi.api.auxiliary.modifiers.GrModifierList; |
| import org.jetbrains.plugins.groovy.lang.psi.api.signatures.GrSignature; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrField; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrVariableDeclaration; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.arguments.GrArgumentLabel; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlock; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrAccessorMethod; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrMethod; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.GrClosureType; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.signatures.GrClosureSignatureUtil; |
| import org.jetbrains.plugins.groovy.lang.psi.util.PsiUtil; |
| |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * @author Maxim.Medvedev |
| */ |
| public class ConvertClosureToMethodIntention extends Intention { |
| private static final Logger LOG = |
| Logger.getInstance("#org.jetbrains.plugins.groovy.intentions.conversions.ConvertClosureToMethodIntention"); |
| |
| @NotNull |
| @Override |
| protected PsiElementPredicate getElementPredicate() { |
| return new MyPredicate(); |
| } |
| |
| @Override |
| protected void processIntention(@NotNull PsiElement element, Project project, Editor editor) throws IncorrectOperationException { |
| final GrField field; |
| if (element.getParent() instanceof GrField) { |
| field = (GrField)element.getParent(); |
| } |
| else { |
| final PsiReference ref = element.getReference(); |
| LOG.assertTrue(ref != null); |
| PsiElement resolved = ref.resolve(); |
| if (resolved instanceof GrAccessorMethod) { |
| resolved = ((GrAccessorMethod)resolved).getProperty(); |
| } |
| LOG.assertTrue(resolved instanceof GrField); |
| field = (GrField)resolved; |
| } |
| |
| final HashSet<PsiReference> usages = new HashSet<PsiReference>(); |
| usages.addAll(ReferencesSearch.search(field).findAll()); |
| final GrAccessorMethod[] getters = field.getGetters(); |
| for (GrAccessorMethod getter : getters) { |
| usages.addAll(MethodReferencesSearch.search(getter).findAll()); |
| } |
| final GrAccessorMethod setter = field.getSetter(); |
| if (setter != null) { |
| usages.addAll(MethodReferencesSearch.search(setter).findAll()); |
| } |
| |
| final String fieldName = field.getName(); |
| LOG.assertTrue(fieldName != null); |
| final Collection<PsiElement> fieldUsages = new HashSet<PsiElement>(); |
| MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>(); |
| for (PsiReference usage : usages) { |
| final PsiElement psiElement = usage.getElement(); |
| if (PsiUtil.isMethodUsage(psiElement)) continue; |
| if (!GroovyLanguage.INSTANCE.equals(psiElement.getLanguage())) { |
| conflicts.putValue(psiElement, GroovyIntentionsBundle.message("closure.is.accessed.outside.of.groovy", fieldName)); |
| } |
| else { |
| if (psiElement instanceof GrReferenceExpression) { |
| fieldUsages.add(psiElement); |
| if (PsiUtil.isAccessedForWriting((GrExpression)psiElement)) { |
| conflicts.putValue(psiElement, GroovyIntentionsBundle.message("write.access.to.closure.variable", fieldName)); |
| } |
| } |
| else if (psiElement instanceof GrArgumentLabel) { |
| conflicts.putValue(psiElement, GroovyIntentionsBundle.message("field.is.used.in.argument.label", fieldName)); |
| } |
| } |
| } |
| final PsiClass containingClass = field.getContainingClass(); |
| final GrExpression initializer = field.getInitializerGroovy(); |
| LOG.assertTrue(initializer != null); |
| final PsiType type = initializer.getType(); |
| LOG.assertTrue(type instanceof GrClosureType); |
| final GrSignature signature = ((GrClosureType)type).getSignature(); |
| final List<MethodSignature> signatures = GrClosureSignatureUtil.generateAllMethodSignaturesBySignature(fieldName, signature); |
| for (MethodSignature s : signatures) { |
| final PsiMethod method = MethodSignatureUtil.findMethodBySignature(containingClass, s, true); |
| if (method != null) { |
| conflicts.putValue(method, GroovyIntentionsBundle.message("method.with.signature.already.exists", |
| GroovyPresentationUtil.getSignaturePresentation(s))); |
| } |
| } |
| if (!conflicts.isEmpty()) { |
| final ConflictsDialog conflictsDialog = new ConflictsDialog(project, conflicts, new Runnable() { |
| @Override |
| public void run() { |
| execute(field, fieldUsages); |
| } |
| }); |
| conflictsDialog.show(); |
| if (conflictsDialog.getExitCode() != DialogWrapper.OK_EXIT_CODE) return; |
| } |
| execute(field, fieldUsages); |
| } |
| |
| private static void execute(final GrField field, final Collection<PsiElement> fieldUsages) { |
| final GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(field.getProject()); |
| |
| final StringBuilder builder = new StringBuilder(field.getTextLength()); |
| final GrClosableBlock block = (GrClosableBlock)field.getInitializerGroovy(); |
| |
| final GrModifierList modifierList = field.getModifierList(); |
| if (modifierList.getModifiers().length > 0 || modifierList.getAnnotations().length > 0) { |
| builder.append(modifierList.getText()); |
| } |
| else { |
| builder.append(GrModifier.DEF); |
| } |
| builder.append(' ').append(field.getName()); |
| |
| builder.append('('); |
| if (block.hasParametersSection()) { |
| builder.append(block.getParameterList().getText()); |
| } |
| else { |
| builder.append("def it = null"); |
| } |
| builder.append(") {"); |
| |
| |
| ApplicationManager.getApplication().runWriteAction(new Runnable() { |
| @Override |
| public void run() { |
| block.getParameterList().delete(); |
| block.getLBrace().delete(); |
| final PsiElement psiElement = PsiUtil.skipWhitespacesAndComments(block.getFirstChild(), true); |
| if (psiElement != null && "->".equals(psiElement.getText())) { |
| psiElement.delete(); |
| } |
| builder.append(block.getText()); |
| final GrMethod method = GroovyPsiElementFactory.getInstance(field.getProject()).createMethodFromText(builder.toString()); |
| field.getParent().replace(method); |
| for (PsiElement usage : fieldUsages) { |
| if (usage instanceof GrReferenceExpression) { |
| final PsiElement parent = usage.getParent(); |
| StringBuilder newRefText = new StringBuilder(); |
| if (parent instanceof GrReferenceExpression && |
| usage == ((GrReferenceExpression)parent).getQualifier() && |
| "call".equals(((GrReferenceExpression)parent).getReferenceName())) { |
| newRefText.append(usage.getText()); |
| usage = parent; |
| } |
| else { |
| PsiElement qualifier = ((GrReferenceExpression)usage).getQualifier(); |
| if (qualifier == null) { |
| if (parent instanceof GrReferenceExpression && |
| ((GrReferenceExpression)parent).getQualifier() != null && |
| usage != ((GrReferenceExpression)parent).getQualifier()) { |
| qualifier = ((GrReferenceExpression)parent).getQualifier(); |
| usage = parent; |
| } |
| } |
| |
| if (qualifier != null) { |
| newRefText.append(qualifier.getText()).append('.'); |
| ((GrReferenceExpression)usage).setQualifier(null); |
| } |
| else { |
| newRefText.append("this."); |
| } |
| newRefText.append('&').append(usage.getText()); |
| } |
| usage.replace(factory.createReferenceExpressionFromText(newRefText.toString())); |
| } |
| } |
| } |
| }); |
| } |
| |
| private static class MyPredicate implements PsiElementPredicate { |
| @Override |
| public boolean satisfiedBy(PsiElement element) { |
| if (element.getLanguage() != GroovyLanguage.INSTANCE) return false; |
| final PsiReference ref = element.getReference(); |
| GrField field; |
| if (ref != null) { |
| PsiElement resolved = ref.resolve(); |
| if (resolved instanceof GrAccessorMethod) { |
| resolved = ((GrAccessorMethod)resolved).getProperty(); |
| } |
| if (!(resolved instanceof GrField)) return false; |
| field = (GrField)resolved; |
| } |
| else { |
| final PsiElement parent = element.getParent(); |
| if (!(parent instanceof GrField)) return false; |
| field = (GrField)parent; |
| if (field.getNameIdentifierGroovy() != element) return false; |
| } |
| |
| final PsiElement varDeclaration = field.getParent(); |
| if (!(varDeclaration instanceof GrVariableDeclaration)) return false; |
| if (((GrVariableDeclaration)varDeclaration).getVariables().length != 1) return false; |
| |
| final GrExpression expression = field.getInitializerGroovy(); |
| return expression instanceof GrClosableBlock; |
| } |
| } |
| } |
