| /* |
| * 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. |
| */ |
| |
| package com.intellij.lang.documentation; |
| |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.psi.PsiComment; |
| import com.intellij.psi.PsiElement; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Defines support for JavaDoc-like documentation stub generation when invoked on "Enter within comment" actions in a custom language. |
| * @author Maxim.Mossienko |
| * @see com.intellij.lang.LanguageDocumentation |
| */ |
| public interface CodeDocumentationProvider extends DocumentationProvider { |
| /** |
| * Finds primary documentation comment within given context. |
| * @param contextElement candidate psi comment |
| * @return contextElement if no other applicable |
| */ |
| @Nullable |
| PsiComment findExistingDocComment(PsiComment contextElement); |
| |
| /** |
| * Examines PSI hierarchy identified by the given 'start' element trying to find element which can be documented |
| * and it's doc comment (if any). |
| * <p/> |
| * Example: |
| * <pre> |
| * int test() { |
| * return [caret] 1; |
| * } |
| * </pre> |
| * PSI element at the caret (return element) is an entry point. This method is expected to return PSI method element |
| * and <code>'null'</code> as the existing doc comment then. |
| * |
| * @param startPoint start traversal point |
| * @return comment anchor which is a given element or its anchor if the one is found and its doc comment (if existing). |
| * This method may return <code>'null'</code> as an indication that no doc comment anchor and existing comment |
| * is available; |
| * returned pair must have non-null PSI element and nullable existing comment references then |
| */ |
| @Nullable |
| Pair<PsiElement, PsiComment> parseContext(@NotNull PsiElement startPoint); |
| |
| /** |
| * Generate documentation comment content for given context. |
| * @param contextComment context psi comment |
| * @return documentation content for given context if any |
| */ |
| @Nullable |
| String generateDocumentationContentStub(PsiComment contextComment); |
| } |