| /* |
| * Copyright 2016 Open Networking Laboratory |
| * |
| * 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.onosproject.yangutils.parser.impl.listeners; |
| |
| import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser; |
| import org.onosproject.yangutils.parser.impl.TreeWalkListener; |
| |
| /* |
| * Reference: RFC6020 and YANG ANTLR Grammar |
| * |
| * ABNF grammar as per RFC6020 |
| * module-header-stmts = ;; these stmts can appear in any order |
| * [yang-version-stmt stmtsep] |
| * namespace-stmt stmtsep |
| * prefix-stmt stmtsep |
| * |
| * submodule-header-stmts = |
| * ;; these stmts can appear in any order |
| * [yang-version-stmt stmtsep] |
| * belongs-to-stmt stmtsep |
| * |
| * yang-version-stmt = yang-version-keyword sep yang-version-arg-str |
| * optsep stmtend |
| * |
| * |
| * ANTLR grammar rule |
| * module_header_statement : yang_version_stmt? namespace_stmt prefix_stmt |
| * | yang_version_stmt? prefix_stmt namespace_stmt |
| * | namespace_stmt yang_version_stmt? prefix_stmt |
| * | namespace_stmt prefix_stmt yang_version_stmt? |
| * | prefix_stmt namespace_stmt yang_version_stmt? |
| * | prefix_stmt yang_version_stmt? namespace_stmt? |
| * ; |
| * submodule_header_statement : yang_version_stmt? belongs_to_stmt |
| * | belongs_to_stmt yang_version_stmt? |
| * ; |
| * yang_version_stmt : YANG_VERSION_KEYWORD INTEGER STMTEND; |
| */ |
| |
| /** |
| * Implements listener based call back function corresponding to the "version" |
| * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020. |
| */ |
| public final class VersionListener { |
| |
| /** |
| * Creates a new version listener. |
| */ |
| private VersionListener() { |
| } |
| |
| /** |
| * It is called when parser receives an input matching the grammar |
| * rule (version), perform validations and update the data model |
| * tree. |
| * |
| * @param listener Listener's object. |
| * @param ctx context object of the grammar rule. |
| */ |
| public static void processVersionEntry(TreeWalkListener listener, |
| GeneratedYangParser.YangVersionStatementContext ctx) { |
| // TODO method implementation |
| } |
| } |