| /* |
| * 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.parserutils; |
| |
| import org.antlr.v4.runtime.ParserRuleContext; |
| import org.onosproject.yangutils.datamodel.YangAtomicPath; |
| import org.onosproject.yangutils.datamodel.YangImport; |
| import org.onosproject.yangutils.datamodel.YangLeaf; |
| import org.onosproject.yangutils.datamodel.YangLeafRef; |
| import org.onosproject.yangutils.datamodel.YangLeavesHolder; |
| import org.onosproject.yangutils.datamodel.YangList; |
| import org.onosproject.yangutils.datamodel.YangModule; |
| import org.onosproject.yangutils.datamodel.YangNode; |
| import org.onosproject.yangutils.datamodel.YangNodeIdentifier; |
| import org.onosproject.yangutils.datamodel.YangPathPredicate; |
| import org.onosproject.yangutils.datamodel.YangReferenceResolver; |
| import org.onosproject.yangutils.datamodel.YangRelativePath; |
| import org.onosproject.yangutils.datamodel.YangSubModule; |
| import org.onosproject.yangutils.datamodel.utils.YangConstructType; |
| import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser; |
| import org.onosproject.yangutils.parser.exceptions.ParserException; |
| |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| import static org.onosproject.yangutils.datamodel.YangPathArgType.ABSOLUTE_PATH; |
| import static org.onosproject.yangutils.datamodel.YangPathArgType.RELATIVE_PATH; |
| import static org.onosproject.yangutils.datamodel.YangPathOperator.EQUALTO; |
| import static org.onosproject.yangutils.utils.UtilConstants.ADD; |
| import static org.onosproject.yangutils.utils.UtilConstants.ANCESTOR_ACCESSOR; |
| import static org.onosproject.yangutils.utils.UtilConstants.ANCESTOR_ACCESSOR_IN_PATH; |
| import static org.onosproject.yangutils.utils.UtilConstants.CARET; |
| import static org.onosproject.yangutils.utils.UtilConstants.CHAR_OF_CLOSE_SQUARE_BRACKET; |
| import static org.onosproject.yangutils.utils.UtilConstants.CHAR_OF_OPEN_SQUARE_BRACKET; |
| import static org.onosproject.yangutils.utils.UtilConstants.CHAR_OF_SLASH; |
| import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS; |
| import static org.onosproject.yangutils.utils.UtilConstants.COLON; |
| import static org.onosproject.yangutils.utils.UtilConstants.CURRENT; |
| import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING; |
| import static org.onosproject.yangutils.utils.UtilConstants.FALSE; |
| import static org.onosproject.yangutils.utils.UtilConstants.OPEN_SQUARE_BRACKET; |
| import static org.onosproject.yangutils.utils.UtilConstants.QUOTES; |
| import static org.onosproject.yangutils.utils.UtilConstants.SLASH; |
| import static org.onosproject.yangutils.utils.UtilConstants.SLASH_FOR_STRING; |
| import static org.onosproject.yangutils.utils.UtilConstants.TRUE; |
| import static org.onosproject.yangutils.utils.UtilConstants.YANG_FILE_ERROR; |
| |
| /** |
| * Represents an utility for listener. |
| */ |
| public final class ListenerUtil { |
| |
| private static final Pattern IDENTIFIER_PATTERN = Pattern.compile("[a-zA-Z_][a-zA-Z0-9_.-]*"); |
| private static final String DATE_PATTERN = "[0-9]{4}-([0-9]{2}|[0-9])-([0-9]{2}|[0-9])"; |
| private static final String NON_NEGATIVE_INTEGER_PATTERN = "[0-9]+"; |
| private static final Pattern INTEGER_PATTERN = Pattern.compile("[-][0-9]+|[0-9]+"); |
| private static final Pattern PATH_PREDICATE_PATTERN = Pattern.compile("\\[(.*?)\\]"); |
| private static final String XML = "xml"; |
| private static final String ONE = "1"; |
| private static final int IDENTIFIER_LENGTH = 64; |
| private static final String DATE_FORMAT = "yyyy-MM-dd"; |
| |
| /** |
| * Creates a new listener util. |
| */ |
| private ListenerUtil() { |
| } |
| |
| /** |
| * Removes doubles quotes and concatenates if string has plus symbol. |
| * |
| * @param yangStringData string from yang file |
| * @return concatenated string after removing double quotes |
| */ |
| public static String removeQuotesAndHandleConcat(String yangStringData) { |
| |
| yangStringData = yangStringData.replace("\"", EMPTY_STRING); |
| String[] tmpData = yangStringData.split(Pattern.quote(ADD)); |
| StringBuilder builder = new StringBuilder(); |
| for (String yangString : tmpData) { |
| builder.append(yangString); |
| } |
| return builder.toString(); |
| } |
| |
| /** |
| * Validates identifier and returns concatenated string if string contains plus symbol. |
| * |
| * @param identifier string from yang file |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @return concatenated string after removing double quotes |
| */ |
| public static String getValidIdentifier(String identifier, YangConstructType yangConstruct, ParserRuleContext ctx) { |
| |
| String identifierString = removeQuotesAndHandleConcat(identifier); |
| ParserException parserException; |
| |
| if (identifierString.length() > IDENTIFIER_LENGTH) { |
| parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is " + |
| "greater than 64 characters."); |
| } else if (!IDENTIFIER_PATTERN.matcher(identifierString).matches()) { |
| parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is not " + |
| "valid."); |
| } else if (identifierString.toLowerCase().startsWith(XML)) { |
| parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " identifier " + identifierString + |
| " must not start with (('X'|'x') ('M'|'m') ('L'|'l'))."); |
| } else { |
| return identifierString; |
| } |
| |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| /** |
| * Validates identifier and returns concatenated string if string contains plus symbol. |
| * |
| * @param identifier string from yang file |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return concatenated string after removing double quotes |
| */ |
| public static String getValidIdentifierForLeafref(String identifier, YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangLeafRef yangLeafRef) { |
| |
| String identifierString = removeQuotesAndHandleConcat(identifier); |
| ParserException parserException; |
| |
| if (identifierString.length() > IDENTIFIER_LENGTH) { |
| parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " + |
| YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is " + |
| "greater than 64 characters."); |
| } else if (!IDENTIFIER_PATTERN.matcher(identifierString).matches()) { |
| parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " + |
| YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is not " + |
| "valid."); |
| } else if (identifierString.toLowerCase().startsWith(XML)) { |
| parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " + |
| YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + |
| " must not start with (('X'|'x') ('M'|'m') ('L'|'l'))."); |
| } else { |
| return identifierString; |
| } |
| |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| /** |
| * Validates the revision date. |
| * |
| * @param dateToValidate input revision date |
| * @return validation result, true for success, false for failure |
| */ |
| public static boolean isDateValid(String dateToValidate) { |
| if (dateToValidate == null || !dateToValidate.matches(DATE_PATTERN)) { |
| return false; |
| } |
| |
| SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT); |
| sdf.setLenient(false); |
| |
| try { |
| //if not valid, it will throw ParseException |
| sdf.parse(dateToValidate); |
| } catch (ParseException e) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Validates YANG version. |
| * |
| * @param ctx version context object of the grammar rule |
| * @return valid version |
| */ |
| public static byte getValidVersion(GeneratedYangParser.YangVersionStatementContext ctx) { |
| |
| String value = removeQuotesAndHandleConcat(ctx.version().getText()); |
| if (!value.equals(ONE)) { |
| ParserException parserException = new ParserException("YANG file error: Input version not supported"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| return Byte.valueOf(value); |
| } |
| |
| /** |
| * Validates non negative integer value. |
| * |
| * @param integerValue integer to be validated |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx context object of the grammar rule |
| * @return valid non negative integer value |
| */ |
| public static int getValidNonNegativeIntegerValue(String integerValue, YangConstructType yangConstruct, |
| ParserRuleContext ctx) { |
| |
| String value = removeQuotesAndHandleConcat(integerValue); |
| if (!value.matches(NON_NEGATIVE_INTEGER_PATTERN)) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " + |
| "valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| int valueInInteger; |
| try { |
| valueInInteger = Integer.parseInt(value); |
| } catch (NumberFormatException e) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " + |
| "valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| return valueInInteger; |
| } |
| |
| /** |
| * Validates integer value. |
| * |
| * @param integerValue integer to be validated |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx context object of the grammar rule |
| * @return valid integer value |
| */ |
| public static int getValidIntegerValue(String integerValue, YangConstructType yangConstruct, |
| ParserRuleContext ctx) { |
| |
| String value = removeQuotesAndHandleConcat(integerValue); |
| if (!INTEGER_PATTERN.matcher(value).matches()) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " + |
| "valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| int valueInInteger; |
| try { |
| valueInInteger = Integer.parseInt(value); |
| } catch (NumberFormatException e) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " + |
| "valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| return valueInInteger; |
| } |
| |
| /** |
| * Validates boolean value. |
| * |
| * @param booleanValue value to be validated |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx context object of the grammar rule |
| * @return boolean value either true or false |
| */ |
| public static boolean getValidBooleanValue(String booleanValue, YangConstructType yangConstruct, |
| ParserRuleContext ctx) { |
| |
| String value = removeQuotesAndHandleConcat(booleanValue); |
| if (value.equals(TRUE)) { |
| return true; |
| } else if (value.equals(FALSE)) { |
| return false; |
| } else { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " + |
| "valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| |
| /** |
| * Returns current date and makes it in usable format for revision. |
| * |
| * @return usable current date format for revision |
| */ |
| public static Date getCurrentDateForRevision() { |
| |
| SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT); |
| |
| Date date = new Date(); |
| String dateInString = dateFormat.format(date); |
| try { |
| //if not valid, it will throw ParseException |
| Date now = dateFormat.parse(dateInString); |
| return date; |
| } catch (ParseException e) { |
| ParserException parserException = new ParserException("YANG file error: Input date is not correct"); |
| throw parserException; |
| } |
| } |
| |
| /** |
| * Checks and return valid node identifier. |
| * |
| * @param nodeIdentifierString string from yang file |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @return valid node identifier |
| */ |
| public static YangNodeIdentifier getValidNodeIdentifier(String nodeIdentifierString, |
| YangConstructType yangConstruct, ParserRuleContext ctx) { |
| String tmpIdentifierString = removeQuotesAndHandleConcat(nodeIdentifierString); |
| String[] tmpData = tmpIdentifierString.split(Pattern.quote(COLON)); |
| if (tmpData.length == 1) { |
| YangNodeIdentifier nodeIdentifier = new YangNodeIdentifier(); |
| nodeIdentifier.setName(getValidIdentifier(tmpData[0], yangConstruct, ctx)); |
| return nodeIdentifier; |
| } else if (tmpData.length == 2) { |
| YangNodeIdentifier nodeIdentifier = new YangNodeIdentifier(); |
| nodeIdentifier.setPrefix(getValidIdentifier(tmpData[0], yangConstruct, ctx)); |
| nodeIdentifier.setName(getValidIdentifier(tmpData[1], yangConstruct, ctx)); |
| return nodeIdentifier; |
| } else { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + " name " + nodeIdentifierString + |
| " is not valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| |
| /** |
| * Checks and return valid node identifier specific to nodes in leafref path. |
| * |
| * @param nodeIdentifierString string from yang file |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return valid node identifier |
| */ |
| public static YangNodeIdentifier getValidNodeIdentifierForLeafref(String nodeIdentifierString, |
| YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangLeafRef yangLeafRef) { |
| |
| String tmpIdentifierString = removeQuotesAndHandleConcat(nodeIdentifierString); |
| String[] tmpData = tmpIdentifierString.split(Pattern.quote(COLON)); |
| if (tmpData.length == 1) { |
| YangNodeIdentifier nodeIdentifier = new YangNodeIdentifier(); |
| nodeIdentifier.setName(getValidIdentifierForLeafref(tmpData[0], yangConstruct, ctx, yangLeafRef)); |
| return nodeIdentifier; |
| } else if (tmpData.length == 2) { |
| YangNodeIdentifier nodeIdentifier = new YangNodeIdentifier(); |
| nodeIdentifier.setPrefix(getValidIdentifierForLeafref(tmpData[0], yangConstruct, ctx, yangLeafRef)); |
| nodeIdentifier.setName(getValidIdentifierForLeafref(tmpData[1], yangConstruct, ctx, yangLeafRef)); |
| return nodeIdentifier; |
| } else { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() + |
| " is not valid."); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| |
| /** |
| * Validates the path argument. It can be either absolute or relative path. |
| * |
| * @param pathString the path string from the path type |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| */ |
| public static void validatePathArgument(String pathString, YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangLeafRef yangLeafRef) { |
| |
| String completePathString = removeQuotesAndHandleConcat(pathString); |
| yangLeafRef.setPath(completePathString); |
| if (completePathString.startsWith(SLASH)) { |
| yangLeafRef.setPathType(ABSOLUTE_PATH); |
| List<YangAtomicPath> yangAtomicPathListList = validateAbsolutePath(completePathString, yangConstruct, ctx, |
| yangLeafRef); |
| validatePrefixAndYangNode(yangAtomicPathListList, yangLeafRef); |
| yangLeafRef.setAtomicPath(yangAtomicPathListList); |
| } else if (completePathString.startsWith(ANCESTOR_ACCESSOR)) { |
| yangLeafRef.setPathType(RELATIVE_PATH); |
| validateRelativePath(completePathString, yangConstruct, ctx, yangLeafRef); |
| } else { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| |
| /** |
| * Validates the prefixes in the leafref and assigns them to the respective imported name in map. |
| * |
| * @param yangAtomicPathList list of atomic poth |
| * @param yangLeafRef instance YANG leafref |
| */ |
| private static void validatePrefixAndYangNode(List<YangAtomicPath> yangAtomicPathList, YangLeafRef yangLeafRef) { |
| Iterator<YangAtomicPath> yangAtomicPathIterator = yangAtomicPathList.listIterator(); |
| while (yangAtomicPathIterator.hasNext()) { |
| YangAtomicPath atomicPath = yangAtomicPathIterator.next(); |
| String prefix = atomicPath.getNodeIdentifier().getPrefix(); |
| YangNode parentNodeOfLeafref = yangLeafRef.getParentNodeOfLeafref(); |
| YangNode moduleOrSubModule = getModuleOrSubmoduleInFileOfTheCurrentNode(parentNodeOfLeafref); |
| YangModule moduleNode = null; |
| if (moduleOrSubModule instanceof YangModule) { |
| moduleNode = (YangModule) moduleOrSubModule; |
| } |
| if (moduleNode != null) { |
| updatePrefixWithTheImportedList(moduleNode, prefix, yangLeafRef); |
| } |
| } |
| } |
| |
| /** |
| * Updates the prefix with the imported list in the module. |
| * |
| * @param moduleNode root node of the leafref |
| * @param prefixInPath prefix in the path |
| * @param yangLeafRef instance YANG leafref |
| */ |
| private static void updatePrefixWithTheImportedList(YangModule moduleNode, String prefixInPath, YangLeafRef |
| yangLeafRef) { |
| if (prefixInPath != null && prefixInPath != EMPTY_STRING && !prefixInPath.equals(moduleNode.getPrefix())) { |
| List<YangImport> moduleImportList = moduleNode.getImportList(); |
| if (moduleImportList != null && !moduleImportList.isEmpty()) { |
| Iterator<YangImport> yangImportIterator = moduleImportList.listIterator(); |
| while (yangImportIterator.hasNext()) { |
| YangImport yangImport = yangImportIterator.next(); |
| if (yangImport.getPrefixId().equals(prefixInPath)) { |
| HashMap prefixMap = new HashMap(); |
| prefixMap.put(prefixInPath, yangImport.getModuleName()); |
| yangLeafRef.setPrefixAndItsImportedModule(prefixMap); |
| } |
| } |
| } |
| } else { |
| HashMap prefixMap = new HashMap(); |
| prefixMap.put(prefixInPath, moduleNode.getName()); |
| yangLeafRef.setPrefixAndItsImportedModule(prefixMap); |
| } |
| } |
| |
| /** |
| * Returns module or submodule node from the current node. |
| * |
| * @param node current node |
| * @return root node |
| */ |
| private static YangNode getModuleOrSubmoduleInFileOfTheCurrentNode(YangNode node) { |
| while (!(node instanceof YangModule) && !(node instanceof YangSubModule)) { |
| if (node == null) { |
| throw new ParserException("Internal datamodel error: Datamodel tree is not correct"); |
| } |
| node = node.getParent(); |
| } |
| return node; |
| } |
| |
| /** |
| * Validates the unique syntax from the reference path. |
| * |
| * @param uniquePath path of unique |
| * @param prefixOfFile current file's prefix |
| * @param ctx yang construct's context to get the line number and character position |
| * @return list of absolute path |
| */ |
| private static List<YangAtomicPath> validateUniqueValues(String uniquePath, String prefixOfFile, |
| ParserRuleContext ctx) { |
| List<YangAtomicPath> atomicPath = new LinkedList<>(); |
| String[] pathInUnique = uniquePath.split(SLASH_FOR_STRING); |
| for (String uniqueValue : pathInUnique) { |
| YangAtomicPath yangAtomicPathPath = new YangAtomicPath(); |
| YangNodeIdentifier nodeIdentifier = getValidNodeIdentifier(uniqueValue, YangConstructType.UNIQUE_DATA, ctx); |
| yangAtomicPathPath.setNodeIdentifier(nodeIdentifier); |
| atomicPath.add(yangAtomicPathPath); |
| if (nodeIdentifier.getPrefix() != null && nodeIdentifier.getPrefix() != prefixOfFile) { |
| ParserException parserException = new ParserException("YANG file error : A leaf reference, in unique," + |
| " must refer to a leaf in the list"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| return atomicPath; |
| } |
| |
| /** |
| * Validates unique field from the list. |
| * |
| * @param yangList instance of YANG list |
| * @param ctx yang construct's context to get the line number and character position |
| */ |
| public static void validateUniqueInList(YangList yangList, ParserRuleContext ctx) { |
| YangLeaf leaf; |
| // Returns the prefix for the file where unique is present. |
| String prefixOfTheFile = getPrefixInFileOfTheCurrentNode(yangList); |
| List<String> uniques = yangList.getUniqueList(); |
| if (uniques != null && !uniques.isEmpty()) { |
| Iterator<String> uniqueList = uniques.listIterator(); |
| while (uniqueList.hasNext()) { |
| String pathInUnique = uniqueList.next(); |
| List<YangAtomicPath> atomicPathInUnique = validateUniqueValues(pathInUnique, prefixOfTheFile, ctx); |
| YangAtomicPath leafInPath = atomicPathInUnique.get(atomicPathInUnique.size() - 1); |
| if (atomicPathInUnique.size() == 1) { |
| leaf = getReferenceLeafFromUnique(yangList, leafInPath); |
| } else { |
| atomicPathInUnique.remove(atomicPathInUnique.size() - 1); |
| YangNode holderOfLeaf = getNodeUnderListFromPath(atomicPathInUnique, yangList, ctx); |
| leaf = getReferenceLeafFromUnique(holderOfLeaf, leafInPath); |
| } |
| if (leaf == null) { |
| ParserException parserException = new ParserException("YANG file error : A leaf reference, in " + |
| "unique," + |
| " must refer to a leaf under the list"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| } |
| } |
| |
| /** |
| * Returns the last node under the unique path. |
| * |
| * @param uniquePath atomic path list |
| * @param node root node from where it starts searching |
| * @param ctx yang construct's context to get the line number and character position |
| * @return last node in the list |
| */ |
| private static YangNode getNodeUnderListFromPath(List<YangAtomicPath> uniquePath, YangNode node, |
| ParserRuleContext ctx) { |
| Iterator<YangAtomicPath> nodesInReference = uniquePath.listIterator(); |
| YangNode potentialReferredNode = node.getChild(); |
| while (nodesInReference.hasNext()) { |
| YangAtomicPath nodeInUnique = nodesInReference.next(); |
| YangNode referredNode = getReferredNodeFromTheUniqueNodes(nodeInUnique.getNodeIdentifier(), |
| potentialReferredNode); |
| if (referredNode == null) { |
| ParserException parserException = new ParserException("YANG file error : The target node in unique " + |
| "reference path is invalid"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } else { |
| potentialReferredNode = referredNode.getChild(); |
| } |
| } |
| return potentialReferredNode; |
| } |
| |
| /** |
| * Returns the node that matches with the name of the node in path. |
| * |
| * @param nodeInUnique node name in path |
| * @param potentialReferredNode node under which it has to match |
| * @return referred node |
| */ |
| private static YangNode getReferredNodeFromTheUniqueNodes(YangNodeIdentifier nodeInUnique, YangNode |
| potentialReferredNode) { |
| while (potentialReferredNode != null) { |
| // Check if the potential referred node is the actual referred node |
| if (potentialReferredNode.getName().equals(nodeInUnique.getName())) { |
| return potentialReferredNode; |
| } |
| potentialReferredNode = potentialReferredNode.getNextSibling(); |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the leaf which unique refers. |
| * |
| * @param nodeForLeaf last node where leaf is referred |
| * @param leafInUnique leaf in unique path |
| * @return YANG leaf |
| */ |
| private static YangLeaf getReferenceLeafFromUnique(YangNode nodeForLeaf, YangAtomicPath leafInUnique) { |
| YangLeavesHolder leavesHolder = (YangLeavesHolder) nodeForLeaf; |
| List<YangLeaf> leaves = leavesHolder.getListOfLeaf(); |
| if (leaves != null && !leaves.isEmpty()) { |
| for (YangLeaf leaf : leaves) { |
| if (leafInUnique.getNodeIdentifier().getName().equals(leaf.getName())) { |
| return leaf; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the prefix of the current file. |
| * |
| * @param node node where it needs to find the root node |
| * @return prefix of root node |
| */ |
| public static String getPrefixInFileOfTheCurrentNode(YangNode node) { |
| String prefixInFile; |
| while (!(node instanceof YangReferenceResolver)) { |
| node = node.getParent(); |
| if (node == null) { |
| throw new ParserException("Internal datamodel error: Datamodel tree is not correct"); |
| } |
| } |
| if (node instanceof YangModule) { |
| YangModule yangModule = (YangModule) node; |
| prefixInFile = yangModule.getPrefix(); |
| } else { |
| YangSubModule yangSubModule = (YangSubModule) node; |
| prefixInFile = yangSubModule.getPrefix(); |
| } |
| return prefixInFile; |
| } |
| |
| /** |
| * Validates the relative path. |
| * |
| * @param completePathString the path string of relative path |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| */ |
| private static void validateRelativePath(String completePathString, YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangLeafRef yangLeafRef) { |
| |
| YangRelativePath relativePath = new YangRelativePath(); |
| int numberOfAncestors = 0; |
| while (completePathString.startsWith(ANCESTOR_ACCESSOR_IN_PATH)) { |
| completePathString = completePathString.replaceFirst(ANCESTOR_ACCESSOR_IN_PATH, EMPTY_STRING); |
| numberOfAncestors = numberOfAncestors + 1; |
| } |
| if (completePathString == null || completePathString.length() == 0) { |
| ParserException parserException = new ParserException("YANG file error : " |
| + YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| relativePath.setAncestorNodeCount(numberOfAncestors); |
| List<YangAtomicPath> atomicPath = validateAbsolutePath(SLASH_FOR_STRING + completePathString, |
| yangConstruct, |
| ctx, yangLeafRef); |
| validatePrefixAndYangNode(atomicPath, yangLeafRef); |
| relativePath.setAtomicPathList(atomicPath); |
| yangLeafRef.setRelativePath(relativePath); |
| } |
| |
| /** |
| * Validates the absolute path. |
| * |
| * @param completePathString the path string of absolute path |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return list of object of node in absolute path |
| */ |
| private static List<YangAtomicPath> validateAbsolutePath(String completePathString, |
| YangConstructType yangConstruct, ParserRuleContext |
| ctx, YangLeafRef yangLeafRef) { |
| |
| List<YangAtomicPath> absolutePathList = new LinkedList<>(); |
| YangPathPredicate yangPathPredicate = new YangPathPredicate(); |
| YangNodeIdentifier yangNodeIdentifier; |
| |
| while (completePathString != null) { |
| String path = completePathString.replaceFirst(SLASH_FOR_STRING, EMPTY_STRING); |
| if (path == null || path.length() == 0) { |
| ParserException parserException = new ParserException("YANG file error : " |
| + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| String matchedPathPredicate; |
| String nodeIdentifier; |
| String[] differentiate = new String[2]; |
| int forNodeIdentifier = path.indexOf(CHAR_OF_SLASH); |
| int forPathPredicate = path.indexOf(CHAR_OF_OPEN_SQUARE_BRACKET); |
| |
| // Checks if path predicate is present for the node. |
| if ((forPathPredicate < forNodeIdentifier) && (forPathPredicate != -1)) { |
| List<String> pathPredicate = new ArrayList<>(); |
| matchedPathPredicate = matchForPathPredicate(path); |
| |
| if (matchedPathPredicate == null || matchedPathPredicate.length() == 0) { |
| ParserException parserException = new ParserException("YANG file error : " |
| + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| int indexOfMatchedFirstOpenBrace = path.indexOf(CHAR_OF_OPEN_SQUARE_BRACKET); |
| differentiate[0] = path.substring(0, indexOfMatchedFirstOpenBrace); |
| differentiate[1] = path.substring(indexOfMatchedFirstOpenBrace); |
| pathPredicate.add(matchedPathPredicate); |
| nodeIdentifier = differentiate[0]; |
| // Starts adding all path predicates of a node into the list. |
| if (!differentiate[1].isEmpty()) { |
| while (differentiate[1].startsWith(OPEN_SQUARE_BRACKET)) { |
| matchedPathPredicate = matchForPathPredicate(differentiate[1]); |
| if (matchedPathPredicate == null || matchedPathPredicate.length() == 0) { |
| ParserException parserException = new ParserException( |
| "YANG file error : " + YangConstructType.getYangConstructType(yangConstruct) + " " |
| + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| pathPredicate.add(matchedPathPredicate); |
| differentiate[1] = differentiate[1].substring(matchedPathPredicate.length()); |
| } |
| } |
| |
| List<YangPathPredicate> pathPredicateList = validatePathPredicate(pathPredicate, yangConstruct, ctx, |
| yangPathPredicate, yangLeafRef); |
| YangAtomicPath atomicPath = new YangAtomicPath(); |
| yangNodeIdentifier = getValidNodeIdentifierForLeafref(nodeIdentifier, yangConstruct, ctx, yangLeafRef); |
| atomicPath.setNodeIdentifier(yangNodeIdentifier); |
| atomicPath.setPathPredicatesList(pathPredicateList); |
| absolutePathList.add(atomicPath); |
| } else { |
| if (path.contains(SLASH_FOR_STRING)) { |
| nodeIdentifier = path.substring(0, path.indexOf(CHAR_OF_SLASH)); |
| differentiate[1] = path.substring(path.indexOf(CHAR_OF_SLASH)); |
| } else { |
| nodeIdentifier = path; |
| differentiate[1] = null; |
| } |
| yangNodeIdentifier = getValidNodeIdentifierForLeafref(nodeIdentifier, yangConstruct, ctx, yangLeafRef); |
| |
| YangAtomicPath atomicPath = new YangAtomicPath(); |
| atomicPath.setNodeIdentifier(yangNodeIdentifier); |
| atomicPath.setPathPredicatesList(null); |
| absolutePathList.add(atomicPath); |
| } |
| if (differentiate[1] == null || differentiate[1].length() == 0) { |
| completePathString = null; |
| } else { |
| completePathString = differentiate[1]; |
| } |
| } |
| return absolutePathList; |
| } |
| |
| /** |
| * Validates path predicate in the absolute path's node. |
| * |
| * @param pathPredicate list of path predicates in the node of absolute path |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangPathPredicate instance of path predicate where it has to be set |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return list of object of path predicates in absolute path's node |
| */ |
| private static List<YangPathPredicate> validatePathPredicate(List<String> pathPredicate, |
| YangConstructType yangConstruct, ParserRuleContext |
| ctx, YangPathPredicate yangPathPredicate, |
| YangLeafRef yangLeafRef) { |
| |
| Iterator<String> pathPredicateString = pathPredicate.iterator(); |
| List<String> pathEqualityExpression = new ArrayList<>(); |
| |
| while (pathPredicateString.hasNext()) { |
| String pathPredicateForNode = pathPredicateString.next(); |
| pathPredicateForNode = (pathPredicateForNode.substring(1)).trim(); |
| pathPredicateForNode = pathPredicateForNode.substring(0, |
| pathPredicateForNode.indexOf(CHAR_OF_CLOSE_SQUARE_BRACKET)); |
| pathEqualityExpression.add(pathPredicateForNode); |
| } |
| List<YangPathPredicate> validatedPathPredicateList = validatePathEqualityExpression(pathEqualityExpression, |
| yangConstruct, ctx, yangPathPredicate, yangLeafRef); |
| return validatedPathPredicateList; |
| } |
| |
| /** |
| * Validates the path equality expression. |
| * |
| * @param pathEqualityExpression list of path equality expression in the path predicates of the node |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangPathPredicate instance of path predicate where it has to be set |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return list of object of path predicates in absolute path's node |
| */ |
| private static List<YangPathPredicate> validatePathEqualityExpression(List<String> pathEqualityExpression, |
| YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangPathPredicate |
| yangPathPredicate, |
| YangLeafRef yangLeafRef) { |
| |
| Iterator<String> pathEqualityExpressionString = pathEqualityExpression.iterator(); |
| List<YangPathPredicate> yangPathPredicateList = new ArrayList<>(); |
| |
| while (pathEqualityExpressionString.hasNext()) { |
| String pathEqualityExpressionForNode = pathEqualityExpressionString.next(); |
| String[] pathEqualityExpressionArray = pathEqualityExpressionForNode.split("[=]"); |
| |
| YangNodeIdentifier yangNodeIdentifierForPredicate; |
| YangRelativePath yangRelativePath; |
| yangNodeIdentifierForPredicate = getValidNodeIdentifierForLeafref(pathEqualityExpressionArray[0].trim(), |
| yangConstruct, ctx, yangLeafRef); |
| yangRelativePath = validatePathKeyExpression(pathEqualityExpressionArray[1].trim(), yangConstruct, ctx, |
| yangLeafRef); |
| yangPathPredicate.setNodeIdentifier(yangNodeIdentifierForPredicate); |
| yangPathPredicate.setPathOperator(EQUALTO); |
| yangPathPredicate.setRightRelativePath(yangRelativePath); |
| yangPathPredicateList.add(yangPathPredicate); |
| } |
| return yangPathPredicateList; |
| } |
| |
| /** |
| * Validate the path key expression. |
| * |
| * @param rightRelativePath relative path in the path predicate |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return object of right relative path in path predicate |
| */ |
| private static YangRelativePath validatePathKeyExpression(String rightRelativePath, |
| YangConstructType yangConstruct, ParserRuleContext ctx, |
| YangLeafRef yangLeafRef) { |
| |
| YangRelativePath yangRelativePath = new YangRelativePath(); |
| String[] relativePath = rightRelativePath.split(SLASH_FOR_STRING); |
| List<String> rightAbsolutePath = new ArrayList<>(); |
| int accessAncestor = 0; |
| for (String path : relativePath) { |
| if (path.trim().equals(ANCESTOR_ACCESSOR)) { |
| accessAncestor = accessAncestor + 1; |
| } else { |
| rightAbsolutePath.add(path); |
| } |
| } |
| List<YangAtomicPath> atomicPathInRelativePath = validateRelativePathKeyExpression(rightAbsolutePath, |
| yangConstruct, ctx, yangLeafRef); |
| yangRelativePath.setAtomicPathList(atomicPathInRelativePath); |
| yangRelativePath.setAncestorNodeCount(accessAncestor); |
| return yangRelativePath; |
| } |
| |
| /** |
| * Validates the relative path key expression. |
| * |
| * @param rightAbsolutePath absolute path nodes present in the relative path |
| * @param yangConstruct yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param yangLeafRef instance of leafref where the path argument has to be set |
| * @return list of object of absolute path nodes present in the relative path |
| */ |
| private static List<YangAtomicPath> validateRelativePathKeyExpression(List<String> rightAbsolutePath, |
| YangConstructType yangConstruct, |
| ParserRuleContext ctx, YangLeafRef |
| yangLeafRef) { |
| |
| List<YangAtomicPath> atomicPathList = new ArrayList<>(); |
| YangNodeIdentifier yangNodeIdentifier; |
| |
| Iterator<String> nodes = rightAbsolutePath.iterator(); |
| String currentInvocationFunction = nodes.next(); |
| currentInvocationFunction = currentInvocationFunction.trim(); |
| String[] currentFunction = currentInvocationFunction.split("[(]"); |
| |
| if (!(currentFunction[0].trim().equals(CURRENT)) || !(currentFunction[1].trim().equals(CLOSE_PARENTHESIS))) { |
| ParserException parserException = new ParserException("YANG file error : " |
| + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + |
| " does not follow valid path syntax"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| while (nodes.hasNext()) { |
| YangAtomicPath atomicPath = new YangAtomicPath(); |
| String node = nodes.next(); |
| yangNodeIdentifier = getValidNodeIdentifierForLeafref(node.trim(), yangConstruct, ctx, yangLeafRef); |
| atomicPath.setNodeIdentifier(yangNodeIdentifier); |
| atomicPathList.add(atomicPath); |
| } |
| return atomicPathList; |
| } |
| |
| /** |
| * Validates the match for first path predicate in a given string. |
| * |
| * @param matchRequiredString string for which match has to be done |
| * @return the matched string |
| */ |
| private static String matchForPathPredicate(String matchRequiredString) { |
| |
| String matchedString = null; |
| java.util.regex.Matcher matcher = PATH_PREDICATE_PATTERN.matcher(matchRequiredString); |
| if (matcher.find()) { |
| matchedString = matcher.group(0); |
| } |
| return matchedString; |
| } |
| |
| /** |
| * Checks and return valid absolute schema node id. |
| * |
| * @param argumentString string from yang file |
| * @param yangConstructType yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @return target nodes list of absolute schema node id |
| */ |
| public static List<YangAtomicPath> getValidAbsoluteSchemaNodeId(String argumentString, |
| YangConstructType yangConstructType, |
| ParserRuleContext ctx) { |
| |
| List<YangAtomicPath> targetNodes = new ArrayList<>(); |
| YangNodeIdentifier yangNodeIdentifier; |
| String tmpSchemaNodeId = removeQuotesAndHandleConcat(argumentString); |
| |
| // absolute-schema-nodeid = 1*("/" node-identifier) |
| if (!tmpSchemaNodeId.startsWith(SLASH)) { |
| ParserException parserException = new ParserException("YANG file error : " + |
| YangConstructType.getYangConstructType(yangConstructType) + " name " + argumentString + |
| "is not valid"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| String[] tmpData = tmpSchemaNodeId.replaceFirst(CARET + SLASH, EMPTY_STRING).split(SLASH); |
| for (String nodeIdentifiers : tmpData) { |
| yangNodeIdentifier = getValidNodeIdentifier(nodeIdentifiers, yangConstructType, ctx); |
| YangAtomicPath yangAbsPath = new YangAtomicPath(); |
| yangAbsPath.setNodeIdentifier(yangNodeIdentifier); |
| targetNodes.add(yangAbsPath); |
| } |
| return targetNodes; |
| } |
| |
| /** |
| * Throws parser exception for unsupported YANG constructs. |
| * |
| * @param yangConstructType yang construct for creating error message |
| * @param ctx yang construct's context to get the line number and character position |
| * @param errorInfo error information |
| */ |
| public static void handleUnsupportedYangConstruct(YangConstructType yangConstructType, |
| ParserRuleContext ctx, String errorInfo) { |
| ParserException parserException = new ParserException(YANG_FILE_ERROR |
| + QUOTES + YangConstructType.getYangConstructType(yangConstructType) + QUOTES |
| + errorInfo); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| /** |
| * Returns date and makes it in usable format for revision. |
| * |
| * @param dateInString date argument string from yang file |
| * @param ctx yang construct's context to get the line number and character position |
| * @return date format for revision |
| */ |
| public static Date getValidDateFromString(String dateInString, ParserRuleContext ctx) { |
| String dateArgument = removeQuotesAndHandleConcat(dateInString); |
| if (dateArgument == null || !dateArgument.matches(DATE_PATTERN)) { |
| ParserException parserException = new ParserException("YANG file error: Input date is not correct"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| |
| SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT); |
| sdf.setLenient(false); |
| |
| try { |
| //if not valid, it will throw ParseException |
| Date date = sdf.parse(dateArgument); |
| return date; |
| } catch (ParseException e) { |
| ParserException parserException = new ParserException("YANG file error: Input date is not correct"); |
| parserException.setLine(ctx.getStart().getLine()); |
| parserException.setCharPosition(ctx.getStart().getCharPositionInLine()); |
| throw parserException; |
| } |
| } |
| } |