| /* |
| * 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; |
| |
| import org.onosproject.yangutils.datamodel.YangBase; |
| import org.onosproject.yangutils.datamodel.YangIdentity; |
| import org.onosproject.yangutils.datamodel.YangIdentityRef; |
| import org.onosproject.yangutils.datamodel.YangNode; |
| import org.onosproject.yangutils.datamodel.YangNodeIdentifier; |
| import org.onosproject.yangutils.datamodel.exceptions.DataModelException; |
| import org.onosproject.yangutils.linker.impl.YangResolutionInfoImpl; |
| import org.onosproject.yangutils.datamodel.utils.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.datamodel.utils.DataModelUtils.addResolutionInfo; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructExtendedListenerErrorMessage; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.*; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidNodeIdentifier; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty; |
| import static org.onosproject.yangutils.datamodel.utils.YangConstructType.BASE_DATA; |
| |
| /** |
| * base-stmt = base-keyword sep identifier-ref-arg-str |
| * optsep stmtend* |
| * identifier-ref-arg = [prefix ":"] identifier |
| */ |
| |
| /** |
| * Represents listener based call back function corresponding to the "base" |
| * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020. |
| */ |
| public final class BaseListener { |
| |
| //Creates a new base listener. |
| private BaseListener() { |
| } |
| |
| /** |
| * Performs validation and updates the data model tree when parser receives an |
| * input matching the grammar rule (base). |
| * |
| * @param listener listener's object |
| * @param ctx context object of the grammar rule |
| */ |
| public static void processBaseEntry(TreeWalkListener listener, |
| GeneratedYangParser.BaseStatementContext ctx) { |
| |
| // Check for stack to be non empty. |
| checkStackIsNotEmpty(listener, MISSING_HOLDER, BASE_DATA, ctx.string().getText(), ENTRY); |
| |
| YangNodeIdentifier nodeIdentifier = getValidNodeIdentifier(ctx.string().getText(), BASE_DATA, ctx); |
| |
| Parsable tmpData = listener.getParsedDataStack().peek(); |
| |
| /** |
| * For identityref base node identifier is copied in identity listener itself, so no need to process |
| * base statement for indentityref |
| */ |
| if (tmpData instanceof YangIdentityRef) { |
| return; |
| } |
| |
| if (!(tmpData instanceof YangIdentity)) { |
| throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, BASE_DATA, |
| ctx.string().getText(), ENTRY)); |
| } |
| |
| YangBase yangBase = new YangBase(); |
| yangBase.setBaseIdentifier(nodeIdentifier); |
| ((YangIdentity) tmpData).setBaseNode(yangBase); |
| |
| int errorLine = ctx.getStart().getLine(); |
| int errorPosition = ctx.getStart().getCharPositionInLine(); |
| |
| // Add resolution information to the list |
| YangResolutionInfoImpl resolutionInfo = |
| new YangResolutionInfoImpl<YangBase>(yangBase, (YangNode) tmpData, errorLine, errorPosition); |
| addToResolutionList(resolutionInfo, ctx); |
| } |
| |
| /** |
| * Add to resolution list. |
| * |
| * @param resolutionInfo resolution information |
| * @param ctx context object of the grammar rule |
| */ |
| private static void addToResolutionList(YangResolutionInfoImpl<YangBase> resolutionInfo, |
| GeneratedYangParser.BaseStatementContext ctx) { |
| |
| try { |
| addResolutionInfo(resolutionInfo); |
| } catch (DataModelException e) { |
| throw new ParserException(constructExtendedListenerErrorMessage(UNHANDLED_PARSED_DATA, |
| BASE_DATA, ctx.string().getText(), EXIT, e.getMessage())); |
| } |
| } |
| |
| } |