parser/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 com.google.common.annotations.Beta;
  11 import com.google.common.collect.ImmutableList;
  12 import java.util.regex.Pattern;
  13 import java.util.regex.PatternSyntaxException;
  14 import org.eclipse.jdt.annotation.NonNull;
  15 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  16 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
  17 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  18 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.PatternEffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.PatternExpression;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.PatternStatement;
  22 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
  23 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  24 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  25 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  30 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  31
  32 @Beta
  33 public final class PatternStatementSupport
  34         extends AbstractStatementSupport<PatternExpression, PatternStatement, PatternEffectiveStatement> {
  35     private static final SubstatementValidator RFC6020_VALIDATOR =
  36         SubstatementValidator.builder(YangStmtMapping.PATTERN)
  37             .addOptional(YangStmtMapping.DESCRIPTION)
  38             .addOptional(YangStmtMapping.ERROR_APP_TAG)
  39             .addOptional(YangStmtMapping.ERROR_MESSAGE)
  40             .addOptional(YangStmtMapping.REFERENCE)
  41             .build();
  42     private static final SubstatementValidator RFC7950_VALIDATOR =
  43         SubstatementValidator.builder(YangStmtMapping.PATTERN)
  44             .addOptional(YangStmtMapping.DESCRIPTION)
  45             .addOptional(YangStmtMapping.ERROR_APP_TAG)
  46             .addOptional(YangStmtMapping.ERROR_MESSAGE)
  47             .addOptional(YangStmtMapping.MODIFIER)
  48             .addOptional(YangStmtMapping.REFERENCE)
  49             .build();
  50
  51     private PatternStatementSupport(final YangParserConfiguration config, final SubstatementValidator validator) {
  52         super(YangStmtMapping.PATTERN, StatementPolicy.contextIndependent(), config, validator);
  53     }
  54
  55     public static @NonNull PatternStatementSupport rfc6020Instance(final YangParserConfiguration config) {
  56         return new PatternStatementSupport(config, RFC6020_VALIDATOR);
  57     }
  58
  59     public static @NonNull PatternStatementSupport rfc7950Instance(final YangParserConfiguration config) {
  60         return new PatternStatementSupport(config, RFC7950_VALIDATOR);
  61     }
  62
  63     @Override
  64     public PatternExpression parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  65         final String pattern = RegexUtils.getJavaRegexFromXSD(value);
  66         try {
  67             Pattern.compile(pattern);
  68         } catch (final PatternSyntaxException e) {
  69             throw new SourceException(ctx, e, "Pattern \"%s\" failed to compile", pattern);
  70         }
  71         return PatternExpression.of(value, pattern).intern();
  72     }
  73
  74     @Override
  75     protected PatternStatement createDeclared(final StmtContext<PatternExpression, PatternStatement, ?> ctx,
  76             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  77         return DeclaredStatements.createPattern(ctx.getArgument(), substatements);
  78     }
  79
  80     @Override
  81     protected PatternStatement attachDeclarationReference(final PatternStatement stmt,
  82             final DeclarationReference reference) {
  83         return DeclaredStatementDecorators.decoratePattern(stmt, reference);
  84     }
  85
  86     @Override
  87     protected PatternEffectiveStatement createEffective(final Current<PatternExpression, PatternStatement> stmt,
  88             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  89         return EffectiveStatements.createPattern(stmt.declared(), substatements);
  90     }
  91 }