2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.rfc8040.parser;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.common.annotations.Beta;
13 import com.google.common.collect.ImmutableList;
14 import org.opendaylight.yangtools.rfc8040.model.api.YangDataEffectiveStatement;
15 import org.opendaylight.yangtools.rfc8040.model.api.YangDataStatement;
16 import org.opendaylight.yangtools.rfc8040.model.api.YangDataStatements;
17 import org.opendaylight.yangtools.yang.common.Empty;
18 import org.opendaylight.yangtools.yang.common.QName;
19 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
20 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
21 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
22 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.UsesEffectiveStatement;
25 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStringStatementSupport;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.BoundStmtCtx;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.InvalidSubstatementException;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.MissingSubstatementException;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
34 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
37 public final class YangDataStatementSupport
38 extends AbstractStringStatementSupport<YangDataStatement, YangDataEffectiveStatement> {
39 private static final SubstatementValidator VALIDATOR = SubstatementValidator.builder(YangDataStatements.YANG_DATA)
40 .addMandatory(YangStmtMapping.CONTAINER)
41 .addOptional(YangStmtMapping.USES)
44 public YangDataStatementSupport(final YangParserConfiguration config) {
45 super(YangDataStatements.YANG_DATA, StatementPolicy.reject(), config, VALIDATOR);
49 public void onStatementAdded(final Mutable<String, YangDataStatement, YangDataEffectiveStatement> ctx) {
50 // as per https://tools.ietf.org/html/rfc8040#section-8,
51 // yang-data is ignored unless it appears as a top-level statement
52 if (ctx.coerceParentContext().getParentContext() != null) {
58 public void onFullDefinitionDeclared(final Mutable<String, YangDataStatement, YangDataEffectiveStatement> ctx) {
59 // Parse and populate our argument to be picked up when we build the effective statement
60 final String argument = SourceException.throwIfNull(ctx.argument(), ctx, "yang-data requires an argument");
61 final QName qname = StmtContextUtils.parseIdentifier(ctx, argument);
62 ctx.addToNs(YangDataArgumentNamespace.class, Empty.value(), qname);
64 // Support for 'operations' container semantics. For this we need to recognize when the model at hand matches
65 // RFC8040 ietf-restconf module. In ordered to do that we hook onto this particular definition:
67 // rc:yang-data yang-api {
71 // If we find it, we hook an inference action which performs the next step when the module is fully declared.
72 if (ctx.isSupportedToBuildEffective() && "yang-api".equals(ctx.argument())) {
73 final var stmts = ctx.declaredSubstatements();
74 if (stmts.size() == 1) {
75 final var stmt = stmts.iterator().next();
76 if (stmt.producesEffective(UsesEffectiveStatement.class) && "restconf".equals(stmt.rawArgument())) {
77 // The rc:yang-data shape matches, but we are not sure about the module identity, that needs to be
78 // done later multiple stages, the first one being initiated through this call.
79 OperationsValidateModuleAction.applyTo(ctx.coerceParentContext());
86 public boolean isIgnoringIfFeatures() {
91 public boolean isIgnoringConfig() {
96 protected YangDataStatement createDeclared(final BoundStmtCtx<String> ctx,
97 final ImmutableList<DeclaredStatement<?>> substatements) {
98 return new YangDataStatementImpl(ctx.getRawArgument(), substatements);
102 protected YangDataStatement attachDeclarationReference(final YangDataStatement stmt,
103 final DeclarationReference reference) {
104 return new RefYangDataStatement(stmt, reference);
108 protected YangDataEffectiveStatement createEffective(final Current<String, YangDataStatement> stmt,
109 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
110 // So now we need to deal with effective validation. The requirement is that:
111 // It MUST contain data definition statements
112 // that result in exactly one container data node definition.
113 final long dataDefs = substatements.stream().filter(DataTreeEffectiveStatement.class::isInstance).count();
115 throw new MissingSubstatementException("yang-data requires exactly one container", stmt.sourceReference());
118 throw new InvalidSubstatementException(stmt,
119 "yang-data requires exactly one data definition node, found %s", dataDefs);
122 return new YangDataEffectiveStatementImpl(stmt, substatements,
123 verifyNotNull(stmt.namespaceItem(YangDataArgumentNamespace.class, Empty.value())));