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.BoundStmtCtx;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
37 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
39 public final class RangeStatementSupport
40 extends AbstractStatementSupport<List<ValueRange>, RangeStatement, RangeEffectiveStatement> {
41 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
42 SubstatementValidator.builder(YangStmtMapping.RANGE)
43 .addOptional(YangStmtMapping.DESCRIPTION)
44 .addOptional(YangStmtMapping.ERROR_APP_TAG)
45 .addOptional(YangStmtMapping.ERROR_MESSAGE)
46 .addOptional(YangStmtMapping.REFERENCE)
49 public RangeStatementSupport(final YangParserConfiguration config) {
50 super(YangStmtMapping.RANGE, StatementPolicy.contextIndependent(), config, SUBSTATEMENT_VALIDATOR);
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 BoundStmtCtx<List<ValueRange>> ctx,
86 final ImmutableList<DeclaredStatement<?>> substatements) {
87 return DeclaredStatements.createRange(ctx.getRawArgument(), ctx.getArgument(), substatements);
91 protected RangeStatement attachDeclarationReference(final RangeStatement stmt,
92 final DeclarationReference reference) {
93 return DeclaredStatementDecorators.decorateRange(stmt, reference);
97 protected RangeEffectiveStatement createEffective(final Current<List<ValueRange>, RangeStatement> stmt,
98 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
99 return EffectiveStatements.createRange(stmt.declared(), substatements);
102 private static @NonNull Number parseDecimalConstraintValue(final @NonNull StmtContext<?, ?, ?> ctx,
103 final @NonNull String value) {
104 if ("max".equals(value)) {
105 return UnresolvedNumber.max();
107 if ("min".equals(value)) {
108 return UnresolvedNumber.min();
110 // Deal with decimal64, i.e. 'decimal-value' production of the RFC6020 ABNF
111 if (value.indexOf('.') != -1) {
113 return Decimal64.valueOf(value);
114 } catch (NumberFormatException e) {
115 throw new SourceException(ctx, e, "Value %s is not a valid decimal number", value);
119 // This has to be an 'integer-value' production of the RFC6020 ABNF. We also clamp allowed range to Long/Uint,
120 // as that is the effectively-valid range of allowed values. For Uint64 we also try to intern the value.
122 return value.startsWith("-") ? Long.valueOf(value) : Uint64.valueOf(value).intern();
123 } catch (IllegalArgumentException e) {
124 throw new SourceException(ctx, e, "Value %s is not a valid integral range number", value);