2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.parser.stmt.rfc6020;
10 import static org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils.firstAttributeOf;
13 import java.net.URISyntaxException;
14 import java.util.ArrayList;
15 import java.util.Arrays;
16 import java.util.Date;
17 import java.util.Iterator;
18 import java.util.LinkedList;
19 import java.util.List;
21 import javax.annotation.Nullable;
22 import javax.xml.xpath.XPath;
23 import javax.xml.xpath.XPathExpressionException;
24 import javax.xml.xpath.XPathFactory;
26 import org.antlr.v4.runtime.tree.TerminalNode;
27 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser;
28 import org.opendaylight.yangtools.yang.common.QName;
29 import org.opendaylight.yangtools.yang.common.QNameModule;
30 import org.opendaylight.yangtools.yang.model.api.ModuleIdentifier;
31 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
32 import org.opendaylight.yangtools.yang.model.api.stmt.BelongsToStatement;
33 import org.opendaylight.yangtools.yang.model.api.stmt.ModuleStatement;
34 import org.opendaylight.yangtools.yang.model.api.stmt.PrefixStatement;
35 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
36 import org.opendaylight.yangtools.yang.model.api.stmt.SubmoduleStatement;
37 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
39 import org.opendaylight.yangtools.yang.parser.spi.source.BelongsToPrefixToModuleName;
40 import org.opendaylight.yangtools.yang.parser.spi.source.ImpPrefixToModuleIdentifier;
41 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleIdentifierToModuleQName;
42 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleNameToModuleQName;
43 import org.opendaylight.yangtools.yang.parser.spi.source.PrefixToModule;
44 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
46 import com.google.common.base.CharMatcher;
47 import com.google.common.base.Splitter;
48 import org.slf4j.Logger;
49 import org.slf4j.LoggerFactory;
51 public final class Utils {
56 private static final Logger LOG = LoggerFactory.getLogger(Utils.class);
57 private static final CharMatcher DOUBLE_QUOTE_MATCHER = CharMatcher.is('"');
58 private static final CharMatcher SINGLE_QUOTE_MATCHER = CharMatcher.is('\'');
60 private static final char SEPARATOR_NODENAME = '/';
62 private static final String REGEX_PATH_ABS = "/[^/].+";
64 public static List<String> splitPathToNodeNames(String path) {
66 Splitter keySplitter = Splitter.on(SEPARATOR_NODENAME).omitEmptyStrings().trimResults();
67 return keySplitter.splitToList(path);
70 public static void validateXPath(String path) {
72 final XPath xPath = XPathFactory.newInstance().newXPath();
76 } catch (XPathExpressionException e) {
77 throw new IllegalArgumentException("Argument is not valid XPath string", e);
81 public static boolean isXPathAbsolute(String path) {
85 return path.matches(REGEX_PATH_ABS);
88 public static Iterable<QName> parseXPath(StmtContext<?, ?, ?> ctx, String path) {
92 List<String> nodeNames = splitPathToNodeNames(path);
93 List<QName> qNames = new ArrayList<>();
95 for (String nodeName : nodeNames) {
97 final QName qName = Utils.qNameFromArgument(ctx, nodeName);
99 } catch (Exception e) {
100 throw new IllegalArgumentException(e);
107 public static String stringFromStringContext(final YangStatementParser.ArgumentContext context) {
108 StringBuilder sb = new StringBuilder();
109 List<TerminalNode> strings = context.STRING();
110 if (strings.size() == 0) {
111 strings = Arrays.asList(context.IDENTIFIER());
113 for (TerminalNode stringNode : strings) {
114 final String str = stringNode.getText();
115 char firstChar = str.charAt(0);
116 final CharMatcher quoteMatcher;
117 if (SINGLE_QUOTE_MATCHER.matches(firstChar)) {
118 quoteMatcher = SINGLE_QUOTE_MATCHER;
119 } else if (DOUBLE_QUOTE_MATCHER.matches(firstChar)) {
120 quoteMatcher = DOUBLE_QUOTE_MATCHER;
125 sb.append(quoteMatcher.removeFrom(str.substring(1, str.length() - 1)));
127 return sb.toString();
130 public static QName qNameFromArgument(StmtContext<?, ?, ?> ctx, String value) {
132 String prefix = null;
133 QNameModule qNameModule = null;
135 qNameModule = QNameModule.create(new URI(""), new Date(0));
136 } catch (URISyntaxException e) {
137 LOG.warn(e.getMessage(), e);
139 String localName = null;
141 String[] namesParts = value.split(":");
142 switch (namesParts.length) {
144 localName = namesParts[0];
146 if (StmtContextUtils.producesDeclared(ctx.getRoot(), ModuleStatement.class)) {
147 prefix = firstAttributeOf(ctx.getRoot().declaredSubstatements(), PrefixStatement.class);
148 qNameModule = ctx.getFromNamespace(PrefixToModule.class, prefix);
150 } else if (StmtContextUtils.producesDeclared(ctx.getRoot(), SubmoduleStatement.class)) {
151 String belongsToModuleName = firstAttributeOf(ctx.getRoot().declaredSubstatements(),
152 BelongsToStatement.class);
153 qNameModule = ctx.getFromNamespace(ModuleNameToModuleQName.class, belongsToModuleName);
157 prefix = namesParts[0];
158 localName = namesParts[1];
160 ModuleIdentifier impModIdentifier = ctx.getRoot().getFromNamespace(ImpPrefixToModuleIdentifier.class,
162 qNameModule = ctx.getFromNamespace(ModuleIdentifierToModuleQName.class, impModIdentifier);
164 if (qNameModule == null && StmtContextUtils.producesDeclared(ctx.getRoot(), SubmoduleStatement.class)) {
165 String moduleName = ctx.getRoot().getFromNamespace(BelongsToPrefixToModuleName.class, prefix);
166 qNameModule = ctx.getFromNamespace(ModuleNameToModuleQName.class, moduleName);
174 return QName.create(qNameModule, localName);
178 public static StatementContextBase<?, ?, ?> findCtxOfNodeInRoot(StatementContextBase<?, ?, ?> rootStmtCtx,
179 final SchemaNodeIdentifier node) {
181 StatementContextBase<?, ?, ?> parent = rootStmtCtx;
182 final Iterator<QName> pathIter = node.getPathFromRoot().iterator();
184 QName targetNode = pathIter.next();
186 while (pathIter.hasNext()) {
188 for (StatementContextBase<?, ?, ?> child : parent.declaredSubstatements()) {
190 if (targetNode.equals(child.getStatementArgument())) {
192 targetNode = pathIter.next();
196 if (parent.equals(rootStmtCtx)) {
202 StatementContextBase<?, ?, ?> targetCtx = null;
204 for (StatementContextBase<?, ?, ?> child : parent.declaredSubstatements()) {
206 if (targetNode.equals(child.getStatementArgument())) {
214 public static SchemaPath getSchemaPath(StmtContext<?, ?, ?> ctx) {
216 Iterator<Object> argumentsIterator = ctx.getArgumentsFromRoot().iterator();
217 argumentsIterator.next(); // skip root argument
219 List<QName> qNamesFromRoot = new LinkedList<>();
221 while (argumentsIterator.hasNext()) {
222 Object argument = argumentsIterator.next();
223 if (argument instanceof QName) {
224 QName qname = (QName) argument;
225 qNamesFromRoot.add(qname);
227 return SchemaPath.SAME;
231 return SchemaPath.create(qNamesFromRoot, true);