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.pattern;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.annotations.Beta;
13 import com.google.common.collect.ImmutableList;
14 import java.util.regex.Pattern;
15 import java.util.regex.PatternSyntaxException;
16 import org.eclipse.jdt.annotation.NonNull;
17 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
18 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
19 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.stmt.PatternEffectiveStatement;
21 import org.opendaylight.yangtools.yang.model.api.stmt.PatternExpression;
22 import org.opendaylight.yangtools.yang.model.api.stmt.PatternStatement;
23 import org.opendaylight.yangtools.yang.model.spi.stmt.DeclaredStatements;
24 import org.opendaylight.yangtools.yang.model.util.RegexUtils;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
29 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
32 public final class PatternStatementSupport
33 extends AbstractStatementSupport<PatternExpression, PatternStatement, PatternEffectiveStatement> {
34 private static final @NonNull PatternStatementSupport RFC6020_INSTANCE = new PatternStatementSupport(
35 SubstatementValidator.builder(YangStmtMapping.PATTERN)
36 .addOptional(YangStmtMapping.DESCRIPTION)
37 .addOptional(YangStmtMapping.ERROR_APP_TAG)
38 .addOptional(YangStmtMapping.ERROR_MESSAGE)
39 .addOptional(YangStmtMapping.REFERENCE)
41 private static final @NonNull PatternStatementSupport RFC7950_INSTANCE = new PatternStatementSupport(
42 SubstatementValidator.builder(YangStmtMapping.PATTERN)
43 .addOptional(YangStmtMapping.DESCRIPTION)
44 .addOptional(YangStmtMapping.ERROR_APP_TAG)
45 .addOptional(YangStmtMapping.ERROR_MESSAGE)
46 .addOptional(YangStmtMapping.MODIFIER)
47 .addOptional(YangStmtMapping.REFERENCE)
50 private final SubstatementValidator validator;
52 private PatternStatementSupport(final SubstatementValidator validator) {
53 super(YangStmtMapping.PATTERN, StatementPolicy.contextIndependent());
54 this.validator = requireNonNull(validator);
57 public static @NonNull PatternStatementSupport rfc6020Instance() {
58 return RFC6020_INSTANCE;
61 public static @NonNull PatternStatementSupport rfc7950Instance() {
62 return RFC7950_INSTANCE;
66 public PatternExpression parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
67 final String pattern = RegexUtils.getJavaRegexFromXSD(value);
69 Pattern.compile(pattern);
70 } catch (final PatternSyntaxException e) {
71 throw new SourceException(ctx, e, "Pattern \"%s\" failed to compile", pattern);
73 return PatternExpression.of(value, pattern);
77 protected SubstatementValidator getSubstatementValidator() {
82 protected PatternStatement createDeclared(final StmtContext<PatternExpression, PatternStatement, ?> ctx,
83 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
84 return DeclaredStatements.createPattern(ctx.getArgument(), substatements);
88 protected PatternStatement createEmptyDeclared(
89 final StmtContext<PatternExpression, PatternStatement, ?> ctx) {
90 return DeclaredStatements.createPattern(ctx.getArgument());
94 protected PatternEffectiveStatement createEffective(final Current<PatternExpression, PatternStatement> stmt,
95 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
96 return substatements.isEmpty() ? new EmptyPatternEffectiveStatement(stmt.declared())
97 : new RegularPatternEffectiveStatement(stmt.declared(), substatements);