| /* |
| * 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.datamodel.YangDataTypes; |
| import org.onosproject.yangutils.datamodel.YangLeaf; |
| import org.onosproject.yangutils.datamodel.YangLeafList; |
| import org.onosproject.yangutils.datamodel.YangType; |
| import org.onosproject.yangutils.parser.Parsable; |
| import org.onosproject.yangutils.parser.ParsableDataType; |
| import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser; |
| import org.onosproject.yangutils.parser.exceptions.ParserException; |
| import org.onosproject.yangutils.parser.impl.TreeWalkListener; |
| import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation; |
| import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction; |
| import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType; |
| import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation; |
| |
| /* |
| * Reference: RFC6020 and YANG ANTLR Grammar |
| * |
| * ABNF grammar as per RFC6020 |
| * type-stmt = type-keyword sep identifier-ref-arg-str optsep |
| * (";" / |
| * "{" stmtsep |
| * type-body-stmts |
| * "}") |
| * |
| * ANTLR grammar rule |
| * typeStatement : TYPE_KEYWORD string (STMTEND | LEFT_CURLY_BRACE typeBodyStatements RIGHT_CURLY_BRACE); |
| */ |
| |
| /** |
| * Implements listener based call back function corresponding to the "type" |
| * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020. |
| */ |
| public final class TypeListener { |
| |
| /** |
| * Creates a new type listener. |
| */ |
| private TypeListener() { |
| } |
| |
| /** |
| * It is called when parser receives an input matching the grammar |
| * rule (type), performs validation and updates the data model |
| * tree. |
| * |
| * @param listener listener's object. |
| * @param ctx context object of the grammar rule. |
| */ |
| public static void processTypeEntry(TreeWalkListener listener, |
| GeneratedYangParser.TypeStatementContext ctx) { |
| |
| // Check for stack to be non empty. |
| ListenerValidation.checkStackIsNotEmpty(listener, ListenerErrorType.MISSING_HOLDER, |
| ParsableDataType.TYPE_DATA, String.valueOf(ctx.string().getText()), |
| ListenerErrorLocation.ENTRY); |
| |
| YangType type = new YangType(); |
| YangDataTypes yangDataTypes = YangDataTypes.getType(ctx.string().getText()); |
| type.setDataTypeName(ctx.string().getText()); |
| type.setDataType(yangDataTypes); |
| |
| Parsable tmpData = listener.getParsedDataStack().peek(); |
| switch (tmpData.getParsableDataType()) { |
| case LEAF_DATA: |
| YangLeaf leaf = (YangLeaf) tmpData; |
| leaf.setDataType(type); |
| break; |
| case LEAF_LIST_DATA: |
| YangLeafList leafList = (YangLeafList) tmpData; |
| leafList.setDataType(type); |
| break; |
| case TYPEDEF_DATA: //TODO |
| break; |
| default: |
| throw new ParserException(ListenerErrorMessageConstruction |
| .constructListenerErrorMessage(ListenerErrorType.INVALID_HOLDER, |
| ParsableDataType.TYPE_DATA, |
| String.valueOf(ctx.string().getText()), |
| ListenerErrorLocation.ENTRY)); |
| } |
| } |
| } |