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.meta;
10 import com.google.common.collect.ImmutableList;
11 import com.google.common.collect.Iterables;
12 import java.util.ArrayList;
13 import java.util.Iterator;
14 import java.util.List;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.yangtools.yang.common.Decimal64;
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.DeclarationReference;
20 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
21 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.RangeEffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.RangeStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.UnresolvedNumber;
25 import org.opendaylight.yangtools.yang.model.api.stmt.ValueRange;
26 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
27 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
28 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
29 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
30 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
36 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
38 public final class RangeStatementSupport
39 extends AbstractStatementSupport<List<ValueRange>, RangeStatement, RangeEffectiveStatement> {
40 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
41 SubstatementValidator.builder(YangStmtMapping.RANGE)
42 .addOptional(YangStmtMapping.DESCRIPTION)
43 .addOptional(YangStmtMapping.ERROR_APP_TAG)
44 .addOptional(YangStmtMapping.ERROR_MESSAGE)
45 .addOptional(YangStmtMapping.REFERENCE)
48 public RangeStatementSupport(final YangParserConfiguration config) {
49 super(YangStmtMapping.RANGE, StatementPolicy.contextIndependent(), config, SUBSTATEMENT_VALIDATOR);
53 public ImmutableList<ValueRange> parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String rangeArgument) {
54 final List<ValueRange> ranges = new ArrayList<>();
56 for (final String singleRange : ArgumentUtils.PIPE_SPLITTER.split(rangeArgument)) {
57 final Iterator<String> boundaries = ArgumentUtils.TWO_DOTS_SPLITTER.split(singleRange).iterator();
58 final Number min = parseDecimalConstraintValue(ctx, boundaries.next());
61 if (boundaries.hasNext()) {
62 max = parseDecimalConstraintValue(ctx, boundaries.next());
64 // if min larger than max then error
65 SourceException.throwIf(ArgumentUtils.compareNumbers(min, max) == 1, ctx,
66 "Range constraint %s has descending order of boundaries; should be ascending", singleRange);
67 SourceException.throwIf(boundaries.hasNext(), ctx,
68 "Wrong number of boundaries in range constraint %s", singleRange);
73 // some of intervals overlapping
74 InferenceException.throwIf(
75 ranges.size() > 1 && ArgumentUtils.compareNumbers(min, Iterables.getLast(ranges).upperBound()) != 1,
76 ctx, "Some of the value ranges in %s are not disjoint", rangeArgument);
77 ranges.add(ValueRange.of(min, max));
80 return ImmutableList.copyOf(ranges);
84 protected RangeStatement createDeclared(final StmtContext<List<ValueRange>, RangeStatement, ?> ctx,
85 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
86 return DeclaredStatements.createRange(ctx.getRawArgument(), ctx.getArgument(), substatements);
90 protected RangeStatement attachDeclarationReference(final RangeStatement stmt,
91 final DeclarationReference reference) {
92 return DeclaredStatementDecorators.decorateRange(stmt, reference);
96 protected RangeEffectiveStatement createEffective(final Current<List<ValueRange>, RangeStatement> stmt,
97 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
98 return EffectiveStatements.createRange(stmt.declared(), substatements);
101 private static @NonNull Number parseDecimalConstraintValue(final @NonNull StmtContext<?, ?, ?> ctx,
102 final @NonNull String value) {
103 if ("max".equals(value)) {
104 return UnresolvedNumber.max();
106 if ("min".equals(value)) {
107 return UnresolvedNumber.min();
109 // Deal with decimal64, i.e. 'decimal-value' production of the RFC6020 ABNF
110 if (value.indexOf('.') != -1) {
112 return Decimal64.valueOf(value);
113 } catch (NumberFormatException e) {
114 throw new SourceException(ctx, e, "Value %s is not a valid decimal number", value);
118 // This has to be an 'integer-value' production of the RFC6020 ABNF. We also clamp allowed range to Long/Uint,
119 // as that is the effectively-valid range of allowed values. For Uint64 we also try to intern the value.
121 return value.startsWith("-") ? Long.valueOf(value) : Uint64.valueOf(value).intern();
122 } catch (IllegalArgumentException e) {
123 throw new SourceException(ctx, e, "Value %s is not a valid integral range number", value);