2 * Copyright (c) 2015 Cisco Systems, Inc. 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.yang.parser.rfc7950.stmt.uses;
10 import com.google.common.base.Verify;
11 import com.google.common.collect.ImmutableSet;
12 import java.util.ArrayList;
13 import java.util.Collection;
14 import java.util.Optional;
15 import org.opendaylight.yangtools.yang.common.QName;
16 import org.opendaylight.yangtools.yang.common.QNameModule;
17 import org.opendaylight.yangtools.yang.common.YangVersion;
18 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
19 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
21 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
23 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
24 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.ChildSchemaNodeNamespace;
25 import org.opendaylight.yangtools.yang.parser.rfc7950.reactor.YangValidationBundles;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyType;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
32 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleCtxToModuleQName;
33 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
34 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace;
35 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace.ValidationBundleType;
36 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
40 final class UsesStatementImpl extends AbstractDeclaredStatement<QName> implements UsesStatement {
41 private static final Logger LOG = LoggerFactory.getLogger(UsesStatementImpl.class);
43 UsesStatementImpl(final StmtContext<QName, UsesStatement, ?> context) {
48 * Copy statements from a grouping to a target node.
50 * @param sourceGrpStmtCtx
51 * source grouping statement context
56 * @throws SourceException
57 * instance of SourceException
59 static void copyFromSourceToTarget(final Mutable<?, ?, ?> sourceGrpStmtCtx,
60 final StatementContextBase<?, ?, ?> targetCtx,
61 final Mutable<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> usesNode) {
62 final Collection<? extends Mutable<?, ?, ?>> declared = sourceGrpStmtCtx.mutableDeclaredSubstatements();
63 final Collection<? extends Mutable<?, ?, ?>> effective = sourceGrpStmtCtx.mutableEffectiveSubstatements();
64 final Collection<Mutable<?, ?, ?>> buffer = new ArrayList<>(declared.size() + effective.size());
65 final QNameModule newQNameModule = getNewQNameModule(targetCtx, sourceGrpStmtCtx);
67 for (final Mutable<?, ?, ?> original : declared) {
68 if (original.isSupportedByFeatures()) {
69 copyStatement(original, targetCtx, newQNameModule, buffer);
73 for (final Mutable<?, ?, ?> original : effective) {
74 copyStatement(original, targetCtx, newQNameModule, buffer);
77 targetCtx.addEffectiveSubstatements(buffer);
78 usesNode.addAsEffectOfStatement(buffer);
81 private static void copyStatement(final Mutable<?, ?, ?> original,
82 final StatementContextBase<?, ?, ?> targetCtx, final QNameModule targetModule,
83 final Collection<Mutable<?, ?, ?>> buffer) {
84 if (needToCopyByUses(original)) {
85 final Mutable<?, ?, ?> copy = targetCtx.childCopyOf(original, CopyType.ADDED_BY_USES, targetModule);
87 } else if (isReusedByUsesOnTop(original)) {
92 private static final ImmutableSet<YangStmtMapping> TOP_REUSED_DEF_SET = ImmutableSet.of(
94 YangStmtMapping.TYPEDEF);
96 private static boolean isReusedByUsesOnTop(final StmtContext<?, ?, ?> stmtContext) {
97 return TOP_REUSED_DEF_SET.contains(stmtContext.getPublicDefinition());
100 private static final ImmutableSet<YangStmtMapping> NOCOPY_FROM_GROUPING_SET = ImmutableSet.of(
101 YangStmtMapping.DESCRIPTION,
102 YangStmtMapping.REFERENCE,
103 YangStmtMapping.STATUS);
104 private static final ImmutableSet<YangStmtMapping> REUSED_DEF_SET = ImmutableSet.of(
105 YangStmtMapping.TYPE,
106 YangStmtMapping.TYPEDEF,
107 YangStmtMapping.USES);
109 public static boolean needToCopyByUses(final StmtContext<?, ?, ?> stmtContext) {
110 final StatementDefinition def = stmtContext.getPublicDefinition();
111 if (REUSED_DEF_SET.contains(def)) {
112 LOG.trace("Will reuse {} statement {}", def, stmtContext);
115 if (NOCOPY_FROM_GROUPING_SET.contains(def)) {
116 return !YangStmtMapping.GROUPING.equals(stmtContext.coerceParentContext().getPublicDefinition());
119 LOG.trace("Will copy {} statement {}", def, stmtContext);
123 public static void resolveUsesNode(
124 final Mutable<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> usesNode,
125 final StmtContext<?, ?, ?> targetNodeStmtCtx) {
126 for (final Mutable<?, ?, ?> subStmtCtx : usesNode.mutableDeclaredSubstatements()) {
127 if (StmtContextUtils.producesDeclared(subStmtCtx, RefineStatement.class)
128 && areFeaturesSupported(subStmtCtx)) {
129 performRefine(subStmtCtx, targetNodeStmtCtx);
134 private static boolean areFeaturesSupported(final StmtContext<?, ?, ?> subStmtCtx) {
136 * In case of Yang 1.1, checks whether features are supported.
138 return !YangVersion.VERSION_1_1.equals(subStmtCtx.getRootVersion()) || subStmtCtx.isSupportedByFeatures();
141 private static void performRefine(final Mutable<?, ?, ?> subStmtCtx, final StmtContext<?, ?, ?> usesParentCtx) {
142 final Object refineArgument = subStmtCtx.getStatementArgument();
143 InferenceException.throwIf(!(refineArgument instanceof SchemaNodeIdentifier),
144 subStmtCtx.getStatementSourceReference(),
145 "Invalid refine argument %s. It must be instance of SchemaNodeIdentifier.", refineArgument);
147 final Optional<StmtContext<?, ?, ?>> optRefineTargetCtx = ChildSchemaNodeNamespace.findNode(
148 usesParentCtx, (SchemaNodeIdentifier) refineArgument);
149 InferenceException.throwIf(!optRefineTargetCtx.isPresent(), subStmtCtx.getStatementSourceReference(),
150 "Refine target node %s not found.", refineArgument);
152 final StmtContext<?, ?, ?> refineTargetNodeCtx = optRefineTargetCtx.get();
153 if (StmtContextUtils.isUnknownStatement(refineTargetNodeCtx)) {
154 LOG.trace("Refine node '{}' in uses '{}' has target node unknown statement '{}'. "
155 + "Refine has been skipped. At line: {}", subStmtCtx.getStatementArgument(),
156 subStmtCtx.coerceParentContext().getStatementArgument(),
157 refineTargetNodeCtx.getStatementArgument(), subStmtCtx.getStatementSourceReference());
158 subStmtCtx.addAsEffectOfStatement(refineTargetNodeCtx);
162 Verify.verify(refineTargetNodeCtx instanceof StatementContextBase);
163 addOrReplaceNodes(subStmtCtx, (StatementContextBase<?, ?, ?>) refineTargetNodeCtx);
164 subStmtCtx.addAsEffectOfStatement(refineTargetNodeCtx);
167 private static void addOrReplaceNodes(final Mutable<?, ?, ?> subStmtCtx,
168 final StatementContextBase<?, ?, ?> refineTargetNodeCtx) {
169 for (final Mutable<?, ?, ?> refineSubstatementCtx : subStmtCtx.mutableDeclaredSubstatements()) {
170 if (isSupportedRefineSubstatement(refineSubstatementCtx)) {
171 addOrReplaceNode(refineSubstatementCtx, refineTargetNodeCtx);
176 private static void addOrReplaceNode(final Mutable<?, ?, ?> refineSubstatementCtx,
177 final StatementContextBase<?, ?, ?> refineTargetNodeCtx) {
179 final StatementDefinition refineSubstatementDef = refineSubstatementCtx.getPublicDefinition();
181 SourceException.throwIf(!isSupportedRefineTarget(refineSubstatementCtx, refineTargetNodeCtx),
182 refineSubstatementCtx.getStatementSourceReference(),
183 "Error in module '%s' in the refine of uses '%s': can not perform refine of '%s' for the target '%s'.",
184 refineSubstatementCtx.getRoot().getStatementArgument(),
185 refineSubstatementCtx.coerceParentContext().getStatementArgument(),
186 refineSubstatementCtx.getPublicDefinition(), refineTargetNodeCtx.getPublicDefinition());
188 if (isAllowedToAddByRefine(refineSubstatementDef)) {
189 refineTargetNodeCtx.addEffectiveSubstatement(refineSubstatementCtx);
191 refineTargetNodeCtx.removeStatementFromEffectiveSubstatements(refineSubstatementDef);
192 refineTargetNodeCtx.addEffectiveSubstatement(refineSubstatementCtx);
196 private static final ImmutableSet<YangStmtMapping> ALLOWED_TO_ADD_BY_REFINE_DEF_SET =
197 ImmutableSet.of(YangStmtMapping.MUST);
199 private static boolean isAllowedToAddByRefine(final StatementDefinition publicDefinition) {
200 return ALLOWED_TO_ADD_BY_REFINE_DEF_SET.contains(publicDefinition);
203 private static boolean isSupportedRefineSubstatement(final StmtContext<?, ?, ?> refineSubstatementCtx) {
204 final Collection<?> supportedRefineSubstatements = refineSubstatementCtx.getFromNamespace(
205 ValidationBundlesNamespace.class, ValidationBundleType.SUPPORTED_REFINE_SUBSTATEMENTS);
207 return supportedRefineSubstatements == null || supportedRefineSubstatements.isEmpty()
208 || supportedRefineSubstatements.contains(refineSubstatementCtx.getPublicDefinition())
209 || StmtContextUtils.isUnknownStatement(refineSubstatementCtx);
212 private static boolean isSupportedRefineTarget(final StmtContext<?, ?, ?> refineSubstatementCtx,
213 final StmtContext<?, ?, ?> refineTargetNodeCtx) {
214 final Collection<?> supportedRefineTargets = YangValidationBundles.SUPPORTED_REFINE_TARGETS
215 .get(refineSubstatementCtx.getPublicDefinition());
217 return supportedRefineTargets == null || supportedRefineTargets.isEmpty()
218 || supportedRefineTargets.contains(refineTargetNodeCtx.getPublicDefinition());
222 private static QNameModule getNewQNameModule(final StmtContext<?, ?, ?> targetCtx,
223 final StmtContext<?, ?, ?> stmtContext) {
224 if (targetCtx.getParentContext() == null) {
225 return targetCtx.getFromNamespace(ModuleCtxToModuleQName.class, targetCtx);
227 if (targetCtx.getPublicDefinition() == YangStmtMapping.AUGMENT) {
228 return StmtContextUtils.getRootModuleQName(targetCtx);
231 final Object targetStmtArgument = targetCtx.getStatementArgument();
232 final Object sourceStmtArgument = stmtContext.getStatementArgument();
233 if (targetStmtArgument instanceof QName && sourceStmtArgument instanceof QName) {
234 return ((QName) targetStmtArgument).getModule();