| /* |
| * 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 java.util.regex.Pattern; |
| |
| import org.onosproject.yangutils.datamodel.YangRangeInterval; |
| import org.onosproject.yangutils.datamodel.YangRangeRestriction; |
| import org.onosproject.yangutils.datamodel.YangType; |
| import org.onosproject.yangutils.datamodel.YangDerivedInfo; |
| import org.onosproject.yangutils.datamodel.exceptions.DataModelException; |
| import org.onosproject.yangutils.datamodel.YangDataTypes; |
| 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 org.onosproject.yangutils.utils.YangConstructType; |
| import org.onosproject.yangutils.utils.builtindatatype.DataTypeException; |
| import org.onosproject.yangutils.utils.builtindatatype.YangBuiltInDataTypeInfo; |
| |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY; |
| 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.INVALID_HOLDER; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.removeQuotesAndHandleConcat; |
| import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty; |
| import static org.onosproject.yangutils.utils.YangConstructType.TYPE_DATA; |
| import static org.onosproject.yangutils.utils.YangConstructType.RANGE_DATA; |
| import static org.onosproject.yangutils.utils.builtindatatype.BuiltInTypeObjectFactory.getDataObjectFromString; |
| |
| /* |
| * Reference: RFC6020 and YANG ANTLR Grammar |
| * |
| * ABNF grammar as per RFC6020 |
| * range-stmt = range-keyword sep range-arg-str optsep |
| * (";" / |
| * "{" stmtsep |
| * ;; these stmts can appear in any order |
| * [error-message-stmt stmtsep] |
| * [error-app-tag-stmt stmtsep] |
| * [description-stmt stmtsep] |
| * [reference-stmt stmtsep] |
| * "}") |
| * |
| * ANTLR grammar rule |
| * rangeStatement : RANGE_KEYWORD range (STMTEND | LEFT_CURLY_BRACE commonStatements RIGHT_CURLY_BRACE); |
| */ |
| |
| /** |
| * Represents listener based call back function corresponding to the "range" |
| * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020. |
| */ |
| public final class RangeRestrictionListener { |
| |
| private static final String PIPE = "|"; |
| private static final String RANGE_INTERVAL = ".."; |
| |
| /** |
| * Creates a new range restriction listener. |
| */ |
| private RangeRestrictionListener() { |
| } |
| |
| /** |
| * It is called when parser receives an input matching the grammar |
| * rule (range), performs validation and updates the data model |
| * tree. |
| * |
| * @param listener listener's object |
| * @param ctx context object of the grammar rule |
| */ |
| public static void processRangeRestrictionEntry(TreeWalkListener listener, |
| GeneratedYangParser.RangeStatementContext ctx) { |
| |
| // Check for stack to be non empty. |
| checkStackIsNotEmpty(listener, MISSING_HOLDER, RANGE_DATA, ctx.range().getText(), ENTRY); |
| |
| Parsable tmpData = listener.getParsedDataStack().peek(); |
| if (tmpData.getYangConstructType() == TYPE_DATA) { |
| YangType type = (YangType) tmpData; |
| setRangeRestriction(type, ctx); |
| } else { |
| throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, RANGE_DATA, |
| ctx.range().getText(), ENTRY)); |
| } |
| } |
| |
| /** |
| * Sets the range restriction to type. |
| * |
| * @param type YANG type for which range restriction to be added |
| * @param ctx context object of the grammar rule |
| */ |
| private static void setRangeRestriction(YangType type, |
| GeneratedYangParser.RangeStatementContext ctx) { |
| |
| YangBuiltInDataTypeInfo<?> startValue, endValue; |
| YangRangeRestriction rangeRestriction = new YangRangeRestriction(); |
| |
| String rangeArgument = removeQuotesAndHandleConcat(ctx.range().getText()); |
| String[] rangeArguments = rangeArgument.trim().split(Pattern.quote(PIPE)); |
| |
| for (String rangePart : rangeArguments) { |
| String startInterval, endInterval; |
| YangRangeInterval rangeInterval = new YangRangeInterval(); |
| String[] rangeBoundary = rangePart.trim().split(Pattern.quote(RANGE_INTERVAL)); |
| |
| if (rangeBoundary.length > 2) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(RANGE_DATA) + " " + rangeArgument + |
| " is not valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| if (rangeBoundary.length == 1) { |
| startInterval = rangeBoundary[0]; |
| endInterval = rangeBoundary[0]; |
| } else { |
| startInterval = rangeBoundary[0]; |
| endInterval = rangeBoundary[1]; |
| } |
| |
| try { |
| startValue = getDataObjectFromString(startInterval, type.getDataType()); |
| endValue = getDataObjectFromString(endInterval, type.getDataType()); |
| } catch (DataTypeException e) { |
| ParserException parserException = new ParserException(e.getMessage()); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| rangeInterval.setStartValue(startValue); |
| rangeInterval.setEndValue(endValue); |
| |
| try { |
| rangeRestriction.addRangeRestrictionInterval(rangeInterval); |
| } catch (DataModelException e) { |
| ParserException parserException = new ParserException(constructExtendedListenerErrorMessage( |
| UNHANDLED_PARSED_DATA, RANGE_DATA, rangeArgument, ENTRY, e.getMessage())); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| |
| if (rangeRestriction != null) { |
| if (type.getDataType() == YangDataTypes.DERIVED) { |
| ((YangDerivedInfo<YangRangeRestriction>) type.getDataTypeExtendedInfo()) |
| .setExtendedInfo(rangeRestriction); |
| } else { |
| type.setDataTypeExtendedInfo(rangeRestriction); |
| } |
| } |
| |
| } |
| } |