2 * Copyright (c) 2015 Cisco Systems, Inc. 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
9 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt;
11 import java.util.Optional;
12 import org.opendaylight.yangtools.yang.model.api.ElementCountConstraint;
13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
14 import org.opendaylight.yangtools.yang.model.api.stmt.MaxElementsEffectiveStatement;
15 import org.opendaylight.yangtools.yang.model.api.stmt.MinElementsEffectiveStatement;
16 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
17 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
19 public final class EffectiveStmtUtils {
20 // FIXME: this should reside somewhere in max_elements
21 private static final String UNBOUNDED_STR = "unbounded";
23 private EffectiveStmtUtils() {
24 throw new UnsupportedOperationException("Utility class");
27 public static SourceException createNameCollisionSourceException(final StmtContext<?, ?, ?> ctx,
28 final EffectiveStatement<?, ?> effectiveStatement) {
29 return new SourceException(ctx.getStatementSourceReference(),
30 "Error in module '%s': cannot add '%s'. Node name collision: '%s' already declared.",
31 ctx.getRoot().getStatementArgument(),
32 effectiveStatement.argument(),
33 effectiveStatement.argument());
36 public static Optional<ElementCountConstraint> createElementCountConstraint(final EffectiveStatement<?, ?> stmt) {
37 final Integer minElements;
38 final Optional<Integer> min = stmt.findFirstEffectiveSubstatementArgument(MinElementsEffectiveStatement.class);
39 if (min.isPresent()) {
40 final Integer m = min.get();
41 minElements = m > 0 ? m : null;
46 final Integer maxElements;
47 final String max = stmt.findFirstEffectiveSubstatementArgument(MaxElementsEffectiveStatement.class)
48 .orElse(UNBOUNDED_STR);
49 if (!UNBOUNDED_STR.equals(max)) {
50 final Integer m = Integer.valueOf(max);
51 maxElements = m < Integer.MAX_VALUE ? m : null;
56 return ElementCountConstraint.forNullable(minElements, maxElements);