| /* |
| * Copyright 2016-present 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; |
| |
| /* |
| * Reference: RFC6020 and YANG ANTLR Grammar |
| * |
| * typedef-stmt = typedef-keyword sep identifier-arg-str optsep |
| * "{" stmtsep |
| * ;; these stmts can appear in any order |
| * type-stmt stmtsep |
| * [units-stmt stmtsep] |
| * [default-stmt stmtsep] |
| * [status-stmt stmtsep] |
| * [description-stmt stmtsep] |
| * [reference-stmt stmtsep] |
| * "}" |
| * default-stmt = default-keyword sep string stmtend |
| |
| * |
| * ANTLR grammar rule |
| * typedefStatement : TYPEDEF_KEYWORD IDENTIFIER LEFT_CURLY_BRACE |
| * (typeStatement | unitsStatement | defaultStatement | statusStatement |
| * | descriptionStatement | referenceStatement)* RIGHT_CURLY_BRACE; |
| * defaultStatement : DEFAULT_KEYWORD string STMTEND; |
| */ |
| |
| import org.onosproject.yangutils.datamodel.YangTypeDef; |
| import org.onosproject.yangutils.parser.Parsable; |
| import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser; |
| import org.onosproject.yangutils.parser.exceptions.ParserException; |
| import org.onosproject.yangutils.parser.impl.TreeWalkListener; |
| |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.INVALID_HOLDER; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty; |
| import static org.onosproject.yangutils.utils.YangConstructType.DEFAULT_DATA; |
| |
| /** |
| * Represents listener for default YANG statement. |
| */ |
| public final class DefaultListener { |
| |
| /** |
| * Creates a new default listener. |
| */ |
| private DefaultListener() { |
| } |
| |
| /** |
| * It is called when parser enters grammar rule (default), it perform |
| * validations and updates the data model tree. |
| * |
| * @param listener listener's object |
| * @param ctx context object of the grammar rule |
| */ |
| public static void processDefaultEntry(TreeWalkListener listener, |
| GeneratedYangParser.DefaultStatementContext ctx) { |
| |
| // Check for stack to be non empty. |
| checkStackIsNotEmpty(listener, MISSING_HOLDER, DEFAULT_DATA, ctx.string().getText(), ENTRY); |
| |
| Parsable tmpNode = listener.getParsedDataStack().peek(); |
| switch (tmpNode.getYangConstructType()) { |
| case TYPEDEF_DATA: { |
| YangTypeDef typeDef = (YangTypeDef) tmpNode; |
| typeDef.setDefaultValueInString(ctx.string().getText()); |
| break; |
| } |
| default: |
| throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, |
| DEFAULT_DATA, ctx.string().getText(), ENTRY)); |
| } |
| } |
| } |