2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.rfc7950.stmt;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.Splitter;
12 import java.math.BigDecimal;
13 import java.util.ArrayList;
14 import java.util.List;
15 import java.util.regex.Pattern;
16 import org.checkerframework.checker.regex.qual.Regex;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.opendaylight.yangtools.yang.common.QName;
19 import org.opendaylight.yangtools.yang.model.api.RevisionAwareXPath;
20 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
21 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
22 import org.opendaylight.yangtools.yang.model.api.stmt.UnresolvedNumber;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
25 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
30 * Utility class for dealing with arguments encountered by StatementSupport classes.
33 public final class ArgumentUtils {
34 public static final Splitter PIPE_SPLITTER = Splitter.on('|').trimResults();
35 public static final Splitter TWO_DOTS_SPLITTER = Splitter.on("..").trimResults();
37 private static final Logger LOG = LoggerFactory.getLogger(ArgumentUtils.class);
40 private static final String PATH_ABS_STR = "/[^/].*";
41 private static final Pattern PATH_ABS = Pattern.compile(PATH_ABS_STR);
42 private static final Splitter SLASH_SPLITTER = Splitter.on('/').omitEmptyStrings().trimResults();
44 // these objects are to compare whether range has MAX or MIN value
45 // none of these values should appear as Yang number according to spec so they are safe to use
46 private static final BigDecimal YANG_MIN_NUM = BigDecimal.valueOf(-Double.MAX_VALUE);
47 private static final BigDecimal YANG_MAX_NUM = BigDecimal.valueOf(Double.MAX_VALUE);
49 private ArgumentUtils() {
50 throw new UnsupportedOperationException();
53 public static int compareNumbers(final Number n1, final Number n2) {
54 final BigDecimal num1 = yangConstraintToBigDecimal(n1);
55 final BigDecimal num2 = yangConstraintToBigDecimal(n2);
56 return new BigDecimal(num1.toString()).compareTo(new BigDecimal(num2.toString()));
59 public static String internBoolean(final String input) {
60 if ("true".equals(input)) {
62 } else if ("false".equals(input)) {
69 public static @NonNull Boolean parseBoolean(final StmtContext<?, ?, ?> ctx, final String input) {
70 if ("true".equals(input)) {
72 } else if ("false".equals(input)) {
75 final StatementDefinition def = ctx.getPublicDefinition();
76 throw new SourceException(ctx.getStatementSourceReference(),
77 "Invalid '%s' statement %s '%s', it can be either 'true' or 'false'",
78 def.getStatementName(), def.getArgumentDefinition().get().getArgumentName(), input);
82 public static RevisionAwareXPath parseXPath(final StmtContext<?, ?, ?> ctx, final String path) {
83 return XPathSupport.parseXPath(ctx, path);
86 public static boolean isAbsoluteXPath(final String path) {
87 return PATH_ABS.matcher(path).matches();
90 @SuppressWarnings("checkstyle:illegalCatch")
91 public static SchemaNodeIdentifier nodeIdentifierFromPath(final StmtContext<?, ?, ?> ctx, final String path) {
92 // FIXME: is the path trimming really necessary??
93 final List<QName> qNames = new ArrayList<>();
94 for (final String nodeName : SLASH_SPLITTER.split(trimSingleLastSlashFromXPath(path))) {
96 qNames.add(StmtContextUtils.parseNodeIdentifier(ctx, nodeName));
97 } catch (final RuntimeException e) {
98 throw new SourceException(ctx.getStatementSourceReference(), e,
99 "Failed to parse node '%s' in path '%s'", nodeName, path);
103 return SchemaNodeIdentifier.create(qNames, PATH_ABS.matcher(path).matches());
106 private static String trimSingleLastSlashFromXPath(final String path) {
107 return path.endsWith("/") ? path.substring(0, path.length() - 1) : path;
110 private static BigDecimal yangConstraintToBigDecimal(final Number number) {
111 if (UnresolvedNumber.max().equals(number)) {
114 if (UnresolvedNumber.min().equals(number)) {
118 return new BigDecimal(number.toString());