Use StatementPolicy instead of CopyPolicy
[yangtools.git] / yang / yang-parser-rfc7950 / src / main / java / org / opendaylight / yangtools / yang / parser / rfc7950 / stmt / leaf / LeafStatementSupport.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.leaf;
9
10 import com.google.common.collect.ImmutableList;
11 import org.opendaylight.yangtools.yang.common.QName;
12 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
13 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
14 import org.opendaylight.yangtools.yang.model.api.Status;
15 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
16 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
17 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
18 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
19 import org.opendaylight.yangtools.yang.model.api.stmt.LeafEffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.stmt.LeafStatement;
21 import org.opendaylight.yangtools.yang.model.api.stmt.MandatoryEffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
24 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseSchemaTreeStatementSupport;
25 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
26 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStmtUtils;
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.StmtContext.Mutable;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
32 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
33
34 public final class LeafStatementSupport extends BaseSchemaTreeStatementSupport<LeafStatement, LeafEffectiveStatement> {
35     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
36         .LEAF)
37         .addOptional(YangStmtMapping.CONFIG)
38         .addOptional(YangStmtMapping.DEFAULT)
39         .addOptional(YangStmtMapping.DESCRIPTION)
40         .addAny(YangStmtMapping.IF_FEATURE)
41         .addOptional(YangStmtMapping.MANDATORY)
42         .addAny(YangStmtMapping.MUST)
43         .addOptional(YangStmtMapping.REFERENCE)
44         .addOptional(YangStmtMapping.STATUS)
45         .addMandatory(YangStmtMapping.TYPE)
46         .addOptional(YangStmtMapping.UNITS)
47         .addOptional(YangStmtMapping.WHEN)
48         .build();
49     private static final LeafStatementSupport INSTANCE = new LeafStatementSupport();
50
51     private LeafStatementSupport() {
52         super(YangStmtMapping.LEAF, StatementPolicy.legacyDeclaredCopy());
53     }
54
55     public static LeafStatementSupport getInstance() {
56         return INSTANCE;
57     }
58
59     @Override
60     public void onFullDefinitionDeclared(final Mutable<QName, LeafStatement, LeafEffectiveStatement> ctx) {
61         super.onFullDefinitionDeclared(ctx);
62         StmtContextUtils.validateIfFeatureAndWhenOnListKeys(ctx);
63     }
64
65     @Override
66     protected SubstatementValidator getSubstatementValidator() {
67         return SUBSTATEMENT_VALIDATOR;
68     }
69
70     @Override
71     protected LeafStatement createDeclared(final StmtContext<QName, LeafStatement, ?> ctx,
72             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
73         return new RegularLeafStatement(ctx.getArgument(), substatements);
74     }
75
76     @Override
77     protected LeafStatement createEmptyDeclared(final StmtContext<QName, LeafStatement, ?> ctx) {
78         return new EmptyLeafStatement(ctx.getArgument());
79     }
80
81     @Override
82     protected LeafEffectiveStatement createEffective(final Current<QName, LeafStatement> stmt,
83             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
84         final TypeEffectiveStatement<?> typeStmt = SourceException.throwIfNull(
85             findFirstStatement(substatements, TypeEffectiveStatement.class), stmt,
86             "Leaf is missing a 'type' statement");
87         final String dflt = findFirstArgument(substatements, DefaultEffectiveStatement.class, null);
88         SourceException.throwIf(
89             EffectiveStmtUtils.hasDefaultValueMarkedWithIfFeature(stmt.yangVersion(), typeStmt, dflt), stmt,
90             "Leaf '%s' has default value '%s' marked with an if-feature statement.", stmt.argument(), dflt);
91
92         final LeafSchemaNode original = (LeafSchemaNode) stmt.original();
93         final int flags = new FlagsBuilder()
94                 .setHistory(stmt.history())
95                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
96                 .setConfiguration(stmt.effectiveConfig().asNullable())
97                 .setMandatory(findFirstArgument(substatements, MandatoryEffectiveStatement.class, Boolean.FALSE))
98                 .toFlags();
99
100         final LeafStatement declared = stmt.declared();
101         final SchemaPath path = stmt.wrapSchemaPath();
102         return original == null ? new EmptyLeafEffectiveStatement(declared, path, flags, substatements)
103                 : new RegularLeafEffectiveStatement(declared, path, flags, substatements, original);
104     }
105 }