Teach YANG parser to retain DeclarationReference
[yangtools.git] / yang / yang-parser-rfc7950 / src / main / java / org / opendaylight / yangtools / yang / parser / rfc7950 / stmt / meta / FeatureStatementSupport.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.meta;
9
10 import com.google.common.collect.ImmutableList;
11 import org.opendaylight.yangtools.yang.common.QName;
12 import org.opendaylight.yangtools.yang.model.api.Status;
13 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
14 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
15 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
16 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureEffectiveStatement;
17 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureStatement;
18 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
19 import org.opendaylight.yangtools.yang.model.parser.api.YangParserConfiguration;
20 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
21 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
22 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
23 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractQNameStatementSupport;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
30
31 public final class FeatureStatementSupport
32         extends AbstractQNameStatementSupport<FeatureStatement, FeatureEffectiveStatement> {
33     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
34         SubstatementValidator.builder(YangStmtMapping.FEATURE)
35             .addOptional(YangStmtMapping.DESCRIPTION)
36             .addAny(YangStmtMapping.IF_FEATURE)
37             .addOptional(YangStmtMapping.STATUS)
38             .addOptional(YangStmtMapping.REFERENCE)
39             .build();
40
41     public FeatureStatementSupport(final YangParserConfiguration config) {
42         super(YangStmtMapping.FEATURE, StatementPolicy.reject(), config);
43     }
44
45     @Override
46     public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
47         return StmtContextUtils.parseIdentifier(ctx, value);
48     }
49
50     @Override
51     public void onFullDefinitionDeclared(final Mutable<QName, FeatureStatement, FeatureEffectiveStatement> stmt) {
52         super.onFullDefinitionDeclared(stmt);
53         stmt.addContext(FeatureNamespace.class, stmt.getArgument(), stmt);
54     }
55
56     @Override
57     protected SubstatementValidator getSubstatementValidator() {
58         return SUBSTATEMENT_VALIDATOR;
59     }
60
61     @Override
62     protected FeatureStatement createDeclared(final StmtContext<QName, FeatureStatement, ?> ctx,
63             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
64         return DeclaredStatements.createFeature(ctx.getArgument(), substatements);
65     }
66
67     @Override
68     protected FeatureEffectiveStatement createEffective(final Current<QName, FeatureStatement> stmt,
69             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
70         return EffectiveStatements.createFeature(stmt.declared(), stmt.effectivePath(), computeFlags(substatements),
71             substatements);
72     }
73
74     private static int computeFlags(final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
75         return new FlagsBuilder()
76                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
77                 .toFlags();
78     }
79 }