yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/PatternStatementImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. 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.stmt.rfc6020;
   9
  10 import java.util.Optional;
  11 import java.util.regex.Pattern;
  12 import java.util.regex.PatternSyntaxException;
  13 import javax.annotation.Nonnull;
  14 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  15 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorAppTagStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorMessageStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.ModifierStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.PatternStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  22 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
  23 import org.opendaylight.yangtools.yang.model.util.RegexUtils;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  28 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.PatternConstraintEffectiveImpl;
  29 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.PatternEffectiveStatementImpl;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class PatternStatementImpl extends AbstractDeclaredStatement<PatternConstraint> implements PatternStatement {
  34     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
  35             .PATTERN)
  36             .addOptional(YangStmtMapping.DESCRIPTION)
  37             .addOptional(YangStmtMapping.ERROR_APP_TAG)
  38             .addOptional(YangStmtMapping.ERROR_MESSAGE)
  39             .addOptional(YangStmtMapping.REFERENCE)
  40             .build();
  41     private static final Logger LOG = LoggerFactory.getLogger(PatternStatementImpl.class);
  42
  43     protected PatternStatementImpl(final StmtContext<PatternConstraint, PatternStatement, ?> context) {
  44         super(context);
  45     }
  46
  47     public static class Definition extends AbstractStatementSupport<PatternConstraint, PatternStatement,
  48             EffectiveStatement<PatternConstraint, PatternStatement>> {
  49
  50         public Definition() {
  51             super(YangStmtMapping.PATTERN);
  52         }
  53
  54         @Override
  55         public PatternConstraint parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  56             final String pattern = RegexUtils.getJavaRegexFromXSD(value);
  57
  58             try {
  59                 Pattern.compile(pattern);
  60             } catch (final PatternSyntaxException e) {
  61                 LOG.debug("Pattern \"{}\" failed to compile at {}", pattern, ctx.getStatementSourceReference(), e);
  62                 return null;
  63             }
  64
  65             return new PatternConstraintEffectiveImpl(pattern, value, Optional.empty(), Optional.empty());
  66         }
  67
  68         @Override
  69         public PatternStatement createDeclared(final StmtContext<PatternConstraint, PatternStatement, ?> ctx) {
  70             return new PatternStatementImpl(ctx);
  71         }
  72
  73         @Override
  74         public EffectiveStatement<PatternConstraint, PatternStatement> createEffective(
  75                 final StmtContext<PatternConstraint, PatternStatement,
  76                 EffectiveStatement<PatternConstraint, PatternStatement>> ctx) {
  77             return new PatternEffectiveStatementImpl(ctx);
  78         }
  79
  80         @Override
  81         protected SubstatementValidator getSubstatementValidator() {
  82             return SUBSTATEMENT_VALIDATOR;
  83         }
  84     }
  85
  86     @Override
  87     public ErrorAppTagStatement getErrorAppTagStatement() {
  88         return firstDeclared(ErrorAppTagStatement.class);
  89     }
  90
  91     @Override
  92     public ErrorMessageStatement getErrorMessageStatement() {
  93         return firstDeclared(ErrorMessageStatement.class);
  94     }
  95
  96     @Override
  97     public DescriptionStatement getDescription() {
  98         return firstDeclared(DescriptionStatement.class);
  99     }
 100
 101     @Override
 102     public ModifierStatement getModifierStatement() {
 103         return firstDeclared(ModifierStatement.class);
 104     }
 105
 106     @Override
 107     public ReferenceStatement getReference() {
 108         return firstDeclared(ReferenceStatement.class);
 109     }
 110
 111     @Nonnull
 112     @Override
 113     public PatternConstraint getValue() {
 114         return argument();
 115     }
 116 }