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.util.ArrayList;
14 import java.util.Iterator;
15 import java.util.List;
16 import org.eclipse.jdt.annotation.NonNull;
17 import org.opendaylight.yangtools.yang.common.Uint64;
18 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
19 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
20 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
21 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.RangeStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.UnresolvedNumber;
24 import org.opendaylight.yangtools.yang.model.api.stmt.ValueRange;
25 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
26 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
32 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
34 public final class RangeStatementSupport
35 extends AbstractStatementSupport<List<ValueRange>, RangeStatement, RangeEffectiveStatement> {
36 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
37 SubstatementValidator.builder(YangStmtMapping.RANGE)
38 .addOptional(YangStmtMapping.DESCRIPTION)
39 .addOptional(YangStmtMapping.ERROR_APP_TAG)
40 .addOptional(YangStmtMapping.ERROR_MESSAGE)
41 .addOptional(YangStmtMapping.REFERENCE)
43 private static final RangeStatementSupport INSTANCE = new RangeStatementSupport();
45 private RangeStatementSupport() {
46 super(YangStmtMapping.RANGE, StatementPolicy.contextIndependent());
49 public static RangeStatementSupport getInstance() {
54 public ImmutableList<ValueRange> parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String rangeArgument) {
55 final List<ValueRange> ranges = new ArrayList<>();
57 for (final String singleRange : ArgumentUtils.PIPE_SPLITTER.split(rangeArgument)) {
58 final Iterator<String> boundaries = ArgumentUtils.TWO_DOTS_SPLITTER.split(singleRange).iterator();
59 final Number min = parseDecimalConstraintValue(ctx, boundaries.next());
62 if (boundaries.hasNext()) {
63 max = parseDecimalConstraintValue(ctx, boundaries.next());
65 // if min larger than max then error
66 SourceException.throwIf(ArgumentUtils.compareNumbers(min, max) == 1, ctx,
67 "Range constraint %s has descending order of boundaries; should be ascending", singleRange);
68 SourceException.throwIf(boundaries.hasNext(), ctx,
69 "Wrong number of boundaries in range constraint %s", singleRange);
74 // some of intervals overlapping
75 InferenceException.throwIf(
76 ranges.size() > 1 && ArgumentUtils.compareNumbers(min, Iterables.getLast(ranges).upperBound()) != 1,
77 ctx, "Some of the value ranges in %s are not disjoint", rangeArgument);
78 ranges.add(ValueRange.of(min, max));
81 return ImmutableList.copyOf(ranges);
85 protected RangeStatement createDeclared(final StmtContext<List<ValueRange>, RangeStatement, ?> ctx,
86 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
87 return DeclaredStatements.createRange(ctx.getRawArgument(), ctx.getArgument(), substatements);
91 protected RangeStatement createEmptyDeclared(final StmtContext<List<ValueRange>, RangeStatement, ?> ctx) {
92 return DeclaredStatements.createRange(ctx.getRawArgument(), ctx.getArgument());
96 protected RangeEffectiveStatement createEffective(final Current<List<ValueRange>, RangeStatement> stmt,
97 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
98 return substatements.isEmpty() ? new EmptyRangeEffectiveStatement(stmt.declared())
99 : new RegularRangeEffectiveStatement(stmt.declared(), substatements);
103 protected SubstatementValidator getSubstatementValidator() {
104 return SUBSTATEMENT_VALIDATOR;
107 private static @NonNull Number parseDecimalConstraintValue(final @NonNull StmtContext<?, ?, ?> ctx,
108 final @NonNull String value) {
109 if ("max".equals(value)) {
110 return UnresolvedNumber.max();
112 if ("min".equals(value)) {
113 return UnresolvedNumber.min();
115 // Deal with decimal64, i.e. 'decimal-value' production of the RFC6020 ABNF
116 if (value.indexOf('.') != -1) {
118 // FIXME: YANGTOOLS-556: Use Decimal64 here
119 return new BigDecimal(value);
120 } catch (NumberFormatException e) {
121 throw new SourceException(ctx, e, "Value %s is not a valid decimal number", value);
125 // This has to be an 'integer-value' production of the RFC6020 ABNF. We also clamp allowed range to Long/Uint,
126 // as that is the effectively-valid range of allowed values. For Uint64 we also try to intern the value.
128 return value.startsWith("-") ? Long.valueOf(value) : Uint64.valueOf(value).intern();
129 } catch (IllegalArgumentException e) {
130 throw new SourceException(ctx, e, "Value %s is not a valid integral range number", value);