yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/when/WhenStatementSupport.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.when;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import org.eclipse.jdt.annotation.NonNull;
  14 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  15 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  16 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.WhenEffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.WhenStatement;
  19 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  20 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  21 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.XPathSupport;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  26 import org.opendaylight.yangtools.yang.xpath.api.YangXPathExpression.QualifiedBound;
  27
  28 public final class WhenStatementSupport
  29         extends AbstractStatementSupport<QualifiedBound, WhenStatement, WhenEffectiveStatement> {
  30     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  31         YangStmtMapping.WHEN)
  32         .addOptional(YangStmtMapping.DESCRIPTION)
  33         .addOptional(YangStmtMapping.REFERENCE)
  34         .build();
  35
  36     private final @NonNull XPathSupport xpathSupport;
  37
  38     private WhenStatementSupport(final XPathSupport xpathSupport) {
  39         // Note: if we end up binding expressions, this needs to become declaredCopy()
  40         super(YangStmtMapping.WHEN, StatementPolicy.contextIndependent());
  41         this.xpathSupport = requireNonNull(xpathSupport);
  42     }
  43
  44     public static WhenStatementSupport createInstance(final XPathSupport xpathSupport) {
  45         return new WhenStatementSupport(xpathSupport);
  46     }
  47
  48     @Override
  49     public QualifiedBound parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  50         return xpathSupport.parseXPath(ctx, value);
  51     }
  52
  53     @Override
  54     protected SubstatementValidator getSubstatementValidator() {
  55         return SUBSTATEMENT_VALIDATOR;
  56     }
  57
  58     @Override
  59     protected WhenStatement createDeclared(final StmtContext<QualifiedBound, WhenStatement, ?> ctx,
  60             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  61         return DeclaredStatements.createWhen(ctx.getRawArgument(), ctx.getArgument(), substatements);
  62     }
  63
  64     @Override
  65     protected WhenStatement createEmptyDeclared(final StmtContext<QualifiedBound, WhenStatement, ?> ctx) {
  66         return DeclaredStatements.createWhen(ctx.getRawArgument(), ctx.getArgument());
  67     }
  68
  69     @Override
  70     protected WhenEffectiveStatement createEffective(final Current<QualifiedBound, WhenStatement> stmt,
  71             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  72         return EffectiveStatements.createWhen(stmt.declared(), substatements);
  73     }
  74 }