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.range;
10 import com.google.common.collect.ImmutableList;
11 import com.google.common.collect.Iterables;
12 import java.math.BigDecimal;
13 import java.math.BigInteger;
14 import java.util.ArrayList;
15 import java.util.Iterator;
16 import java.util.List;
17 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
18 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
19 import org.opendaylight.yangtools.yang.model.api.stmt.RangeStatement;
20 import org.opendaylight.yangtools.yang.model.api.stmt.UnresolvedNumber;
21 import org.opendaylight.yangtools.yang.model.api.stmt.ValueRange;
22 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
27 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
29 public final class RangeStatementSupport extends AbstractStatementSupport<List<ValueRange>, RangeStatement,
30 EffectiveStatement<List<ValueRange>, RangeStatement>> {
31 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
33 .addOptional(YangStmtMapping.DESCRIPTION)
34 .addOptional(YangStmtMapping.ERROR_APP_TAG)
35 .addOptional(YangStmtMapping.ERROR_MESSAGE)
36 .addOptional(YangStmtMapping.REFERENCE)
38 private static final RangeStatementSupport INSTANCE = new RangeStatementSupport();
40 private RangeStatementSupport() {
41 super(YangStmtMapping.RANGE);
44 public static RangeStatementSupport getInstance() {
49 public List<ValueRange> parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String rangeArgument) {
50 final List<ValueRange> ranges = new ArrayList<>();
52 for (final String singleRange : ArgumentUtils.PIPE_SPLITTER.split(rangeArgument)) {
53 final Iterator<String> boundaries = ArgumentUtils.TWO_DOTS_SPLITTER.split(singleRange).iterator();
54 final Number min = parseDecimalConstraintValue(ctx, boundaries.next());
57 if (boundaries.hasNext()) {
58 max = parseDecimalConstraintValue(ctx, boundaries.next());
60 // if min larger than max then error
61 SourceException.throwIf(ArgumentUtils.compareNumbers(min, max) == 1, ctx.getStatementSourceReference(),
62 "Range constraint %s has descending order of boundaries; should be ascending", singleRange);
63 SourceException.throwIf(boundaries.hasNext(), ctx.getStatementSourceReference(),
64 "Wrong number of boundaries in range constraint %s", singleRange);
69 // some of intervals overlapping
70 InferenceException.throwIf(ranges.size() > 1
71 && ArgumentUtils.compareNumbers(min, Iterables.getLast(ranges).upperBound()) != 1,
72 ctx.getStatementSourceReference(), "Some of the value ranges in %s are not disjoint", rangeArgument);
73 ranges.add(ValueRange.of(min, max));
76 return ImmutableList.copyOf(ranges);
80 public RangeStatement createDeclared(final StmtContext<List<ValueRange>, RangeStatement, ?> ctx) {
81 return new RangeStatementImpl(ctx);
85 public EffectiveStatement<List<ValueRange>, RangeStatement> createEffective(
86 final StmtContext<List<ValueRange>, RangeStatement, EffectiveStatement<List<ValueRange>,
87 RangeStatement>> ctx) {
88 return new RangeEffectiveStatementImpl(ctx);
92 protected SubstatementValidator getSubstatementValidator() {
93 return SUBSTATEMENT_VALIDATOR;
96 private static Number parseDecimalConstraintValue(final StmtContext<?, ?, ?> ctx, final String value) {
97 if ("max".equals(value)) {
98 return UnresolvedNumber.max();
100 if ("min".equals(value)) {
101 return UnresolvedNumber.min();
105 return value.indexOf('.') != -1 ? new BigDecimal(value) : new BigInteger(value);
106 } catch (final NumberFormatException e) {
107 throw new SourceException(String.format("Value %s is not a valid decimal number", value),
108 ctx.getStatementSourceReference(), e);