2 * Copyright (c) 2018 Pantheon Technologies, s.r.o. 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.xpath.impl;
10 import static java.util.Objects.requireNonNull;
12 import javax.xml.xpath.XPathExpressionException;
13 import org.opendaylight.yangtools.yang.common.QName;
14 import org.opendaylight.yangtools.yang.xpath.api.YangExpr;
15 import org.opendaylight.yangtools.yang.xpath.api.YangLiteralExpr;
16 import org.opendaylight.yangtools.yang.xpath.api.YangLocationPath;
17 import org.opendaylight.yangtools.yang.xpath.api.YangXPathExpression;
19 final class AntlrYangXPathExpression implements YangXPathExpression {
20 private final QNameSupport qnameSupport;
21 private final YangExpr rootExpr;
22 private final String origStr;
24 AntlrYangXPathExpression(final QNameSupport qnameSupport, final YangExpr rootExpr, final String origStr) {
25 this.qnameSupport = requireNonNull(qnameSupport);
26 this.rootExpr = requireNonNull(rootExpr);
27 this.origStr = requireNonNull(origStr);
31 public YangExpr getRootExpr() {
36 public QName interpretAsQName(final YangLiteralExpr expr) throws XPathExpressionException {
37 // We are eagerly interpreting PrefixedName-compliant strings, hence they have a specific subclass
38 if (expr instanceof QNameLiteralExpr) {
39 return ((QNameLiteralExpr) expr).getQName();
43 // Deal with UnprefixedNames by interpreting them in implicit namespace
44 return qnameSupport.createQName(expr.getLiteral());
45 } catch (IllegalArgumentException e) {
46 throw new XPathExpressionException(e);
51 public YangLocationPath interpretAsInstanceIdentifier(final YangLiteralExpr expr) throws XPathExpressionException {
52 if (expr instanceof InstanceIdentifierLiteralExpr) {
53 return YangLocationPath.of(true, ((InstanceIdentifierLiteralExpr)expr).getSteps());
55 throw new XPathExpressionException("Invalid instance-identifier " + expr);
59 public String toString() {