yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/pattern/PatternStatementSupport.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.pattern;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  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.DeclarationReference;
  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.PatternEffectiveStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.PatternExpression;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.PatternStatement;
  24 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
  25 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  26 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  27 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  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;
  33
  34 @Beta
  35 public final class PatternStatementSupport
  36         extends AbstractStatementSupport<PatternExpression, PatternStatement, PatternEffectiveStatement> {
  37     private static final SubstatementValidator RFC6020_VALIDATOR =
  38         SubstatementValidator.builder(YangStmtMapping.PATTERN)
  39             .addOptional(YangStmtMapping.DESCRIPTION)
  40             .addOptional(YangStmtMapping.ERROR_APP_TAG)
  41             .addOptional(YangStmtMapping.ERROR_MESSAGE)
  42             .addOptional(YangStmtMapping.REFERENCE)
  43             .build();
  44     private static final SubstatementValidator RFC7950_VALIDATOR =
  45         SubstatementValidator.builder(YangStmtMapping.PATTERN)
  46             .addOptional(YangStmtMapping.DESCRIPTION)
  47             .addOptional(YangStmtMapping.ERROR_APP_TAG)
  48             .addOptional(YangStmtMapping.ERROR_MESSAGE)
  49             .addOptional(YangStmtMapping.MODIFIER)
  50             .addOptional(YangStmtMapping.REFERENCE)
  51             .build();
  52
  53     private final SubstatementValidator validator;
  54
  55     private PatternStatementSupport(final YangParserConfiguration config, final SubstatementValidator validator) {
  56         super(YangStmtMapping.PATTERN, StatementPolicy.contextIndependent(), config);
  57         this.validator = requireNonNull(validator);
  58     }
  59
  60     public static @NonNull PatternStatementSupport rfc6020Instance(final YangParserConfiguration config) {
  61         return new PatternStatementSupport(config, RFC6020_VALIDATOR);
  62     }
  63
  64     public static @NonNull PatternStatementSupport rfc7950Instance(final YangParserConfiguration config) {
  65         return new PatternStatementSupport(config, RFC7950_VALIDATOR);
  66     }
  67
  68     @Override
  69     public PatternExpression parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  70         final String pattern = RegexUtils.getJavaRegexFromXSD(value);
  71         try {
  72             Pattern.compile(pattern);
  73         } catch (final PatternSyntaxException e) {
  74             throw new SourceException(ctx, e, "Pattern \"%s\" failed to compile", pattern);
  75         }
  76         return PatternExpression.of(value, pattern);
  77     }
  78
  79     @Override
  80     protected SubstatementValidator getSubstatementValidator() {
  81         return validator;
  82     }
  83
  84     @Override
  85     protected PatternStatement createDeclared(final StmtContext<PatternExpression, PatternStatement, ?> ctx,
  86             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  87         return DeclaredStatements.createPattern(ctx.getArgument(), substatements);
  88     }
  89
  90     @Override
  91     protected PatternStatement attachDeclarationReference(final PatternStatement stmt,
  92             final DeclarationReference reference) {
  93         return DeclaredStatementDecorators.decoratePattern(stmt, reference);
  94     }
  95
  96     @Override
  97     protected PatternEffectiveStatement createEffective(final Current<PatternExpression, PatternStatement> stmt,
  98             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  99         return EffectiveStatements.createPattern(stmt.declared(), substatements);
 100     }
 101 }