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.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.ri.stmt.DeclaredStatements;
  24 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  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;
  30
  31 @Beta
  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)
  40             .build());
  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)
  48             .build());
  49
  50     private final SubstatementValidator validator;
  51
  52     private PatternStatementSupport(final SubstatementValidator validator) {
  53         super(YangStmtMapping.PATTERN, StatementPolicy.contextIndependent());
  54         this.validator = requireNonNull(validator);
  55     }
  56
  57     public static @NonNull PatternStatementSupport rfc6020Instance() {
  58         return RFC6020_INSTANCE;
  59     }
  60
  61     public static @NonNull PatternStatementSupport rfc7950Instance() {
  62         return RFC7950_INSTANCE;
  63     }
  64
  65     @Override
  66     public PatternExpression parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  67         final String pattern = RegexUtils.getJavaRegexFromXSD(value);
  68         try {
  69             Pattern.compile(pattern);
  70         } catch (final PatternSyntaxException e) {
  71             throw new SourceException(ctx, e, "Pattern \"%s\" failed to compile", pattern);
  72         }
  73         return PatternExpression.of(value, pattern);
  74     }
  75
  76     @Override
  77     protected SubstatementValidator getSubstatementValidator() {
  78         return validator;
  79     }
  80
  81     @Override
  82     protected PatternStatement createDeclared(final StmtContext<PatternExpression, PatternStatement, ?> ctx,
  83             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  84         return DeclaredStatements.createPattern(ctx.getArgument(), substatements);
  85     }
  86
  87     @Override
  88     protected PatternEffectiveStatement createEffective(final Current<PatternExpression, PatternStatement> stmt,
  89             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  90         return EffectiveStatements.createPattern(stmt.declared(), substatements);
  91     }
  92 }