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 com.google.common.base.Optional;
  11 import java.util.regex.Pattern;
  12 import java.util.regex.PatternSyntaxException;
  13 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  14 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorAppTagStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorMessageStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.PatternStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  20 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
  21 import org.opendaylight.yangtools.yang.parser.spi.SubstatementValidator;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  25 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  26 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.PatternConstraintEffectiveImpl;
  27 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.PatternEffectiveStatementImpl;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class PatternStatementImpl extends AbstractDeclaredStatement<PatternConstraint> implements PatternStatement {
  32     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(Rfc6020Mapping
  33             .PATTERN)
  34             .add(Rfc6020Mapping.DESCRIPTION, 0, 1)
  35             .add(Rfc6020Mapping.ERROR_APP_TAG, 0, 1)
  36             .add(Rfc6020Mapping.ERROR_MESSAGE, 0, 1)
  37             .add(Rfc6020Mapping.REFERENCE, 0, 1)
  38             .build();
  39     private static final Logger LOG = LoggerFactory.getLogger(PatternStatementImpl.class);
  40
  41     protected PatternStatementImpl(final StmtContext<PatternConstraint, PatternStatement, ?> context) {
  42         super(context);
  43     }
  44
  45     public static class Definition
  46             extends
  47             AbstractStatementSupport<PatternConstraint, PatternStatement, EffectiveStatement<PatternConstraint, PatternStatement>> {
  48
  49         public Definition() {
  50             super(Rfc6020Mapping.PATTERN);
  51         }
  52
  53         @Override
  54         public PatternConstraint parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  55             final String pattern = "^" + value + '$';
  56
  57             try {
  58                 Pattern.compile(pattern);
  59             } catch (PatternSyntaxException e) {
  60                 LOG.debug("Pattern \"{}\" failed to compile at {}", pattern, ctx.getStatementSourceReference(), e);
  61                 return null;
  62             }
  63
  64             return new PatternConstraintEffectiveImpl(pattern, Optional.<String>absent(), Optional.<String>absent());
  65         }
  66
  67         @Override
  68         public PatternStatement createDeclared(final StmtContext<PatternConstraint, PatternStatement, ?> ctx) {
  69             return new PatternStatementImpl(ctx);
  70         }
  71
  72         @Override
  73         public EffectiveStatement<PatternConstraint, PatternStatement> createEffective(
  74                 final StmtContext<PatternConstraint, PatternStatement, EffectiveStatement<PatternConstraint, PatternStatement>> ctx) {
  75             return new PatternEffectiveStatementImpl(ctx);
  76         }
  77
  78         @Override
  79         public void onFullDefinitionDeclared(StmtContext.Mutable<PatternConstraint, PatternStatement,
  80                 EffectiveStatement<PatternConstraint, PatternStatement>> stmt) throws SourceException {
  81             super.onFullDefinitionDeclared(stmt);
  82             SUBSTATEMENT_VALIDATOR.validate(stmt);
  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 ReferenceStatement getReference() {
 103         return firstDeclared(ReferenceStatement.class);
 104     }
 105
 106     @Override
 107     public PatternConstraint getValue() {
 108         return argument();
 109     }
 110
 111 }