| /* |
| * 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.style; |
| |
| import com.intellij.codeInsight.intention.IntentionAction; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiManager; |
| import com.intellij.psi.PsiType; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.annotator.GrHighlightUtil; |
| import org.jetbrains.plugins.groovy.codeStyle.GrReferenceAdjuster; |
| import org.jetbrains.plugins.groovy.intentions.GroovyIntentionsBundle; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlock; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.branch.GrReturnStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.GrTypeDefinition; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrMethod; |
| import org.jetbrains.plugins.groovy.lang.psi.api.types.GrTypeElement; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.TypesUtil; |
| |
| /** |
| * @author Max Medvedev |
| */ |
| public class AddReturnTypeFix implements IntentionAction { |
| @NotNull |
| @Override |
| public String getText() { |
| return GroovyIntentionsBundle.message("add.return.type"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return GroovyIntentionsBundle.message("add.return.type.to.method.declaration"); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| if (editor == null) return false; |
| int offset = editor.getCaretModel().getOffset(); |
| GrMethod method = findMethod(file, offset); |
| if (method == null && offset > 0) method = findMethod(file, offset - 1); |
| return method != null && !method.isConstructor(); |
| } |
| |
| @Nullable |
| private static GrMethod findMethod(PsiFile file, final int offset) { |
| final PsiElement at = file.findElementAt(offset); |
| if (at == null) return null; |
| |
| if (at.getParent() instanceof GrReturnStatement) { |
| final GrReturnStatement returnStatement = ((GrReturnStatement)at.getParent()); |
| final PsiElement word = returnStatement.getReturnWord(); |
| |
| if (!word.getTextRange().contains(offset)) return null; |
| |
| final GroovyPsiElement returnOwner = PsiTreeUtil.getParentOfType(returnStatement, GrClosableBlock.class, GrMethod.class); |
| if (returnOwner instanceof GrMethod) { |
| final GrTypeElement returnTypeElement = ((GrMethod)returnOwner).getReturnTypeElementGroovy(); |
| if (returnTypeElement == null) { |
| return (GrMethod)returnOwner; |
| } |
| } |
| |
| return null; |
| } |
| |
| final GrMethod method = PsiTreeUtil.getParentOfType(at, GrMethod.class, false, GrTypeDefinition.class, GrClosableBlock.class); |
| if (method != null && GrHighlightUtil.getMethodHeaderTextRange(method).contains(offset)) { |
| if (method.getReturnTypeElementGroovy() == null) { |
| return method; |
| } |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException { |
| final GrMethod method = findMethod(file, editor.getCaretModel().getOffset()); |
| if (method == null) return; |
| |
| PsiType type = method.getInferredReturnType(); |
| if (type == null) type = PsiType.getJavaLangObject(PsiManager.getInstance(project), file.getResolveScope()); |
| type = TypesUtil.unboxPrimitiveTypeWrapper(type); |
| GrReferenceAdjuster.shortenAllReferencesIn(method.setReturnType(type)); |
| } |
| |
| @Override |
| public boolean startInWriteAction() { |
| return true; |
| } |
| } |