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.stmt.reactor;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Verify;
13 import com.google.common.collect.ImmutableSet;
14 import java.util.Collection;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.common.QNameModule;
18 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
19 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
20 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
21 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
23 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.ChoiceStatement;
25 import org.opendaylight.yangtools.yang.model.api.stmt.ConfigStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.KeyStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
29 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyType;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.NamespaceStorageNode;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.QNameCacheNamespace;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
37 import org.opendaylight.yangtools.yang.parser.spi.source.AugmentToChoiceNamespace;
38 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace;
39 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace.ValidationBundleType;
40 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.Utils;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
44 final class SubstatementContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>> extends
45 StatementContextBase<A, D, E> {
46 private static final Logger LOG = LoggerFactory.getLogger(SubstatementContext.class);
48 private final StatementContextBase<?, ?, ?> parent;
49 private final A argument;
50 private volatile SchemaPath schemaPath;
52 SubstatementContext(final StatementContextBase<?, ?, ?> parent, final ContextBuilder<A, D, E> builder) {
54 this.parent = Preconditions.checkNotNull(parent, "Parent must not be null");
55 this.argument = builder.getDefinition().parseArgumentValue(this, builder.getRawArgument());
58 @SuppressWarnings("unchecked")
59 SubstatementContext(final SubstatementContext<A, D, E> original, final QNameModule newQNameModule,
60 final StatementContextBase<?, ?, ?> newParent, final CopyType typeOfCopy) {
62 this.parent = newParent;
64 if (newQNameModule != null) {
65 if (original.argument instanceof QName) {
66 final QName originalQName = (QName) original.argument;
67 this.argument = (A) getFromNamespace(QNameCacheNamespace.class,
68 QName.create(newQNameModule, originalQName.getLocalName()));
69 } else if (StmtContextUtils.producesDeclared(original, KeyStatement.class)) {
70 this.argument = (A) StmtContextUtils.replaceModuleQNameForKey(
71 (StmtContext<Collection<SchemaNodeIdentifier>, KeyStatement, ?>) original, newQNameModule);
73 this.argument = original.argument;
76 this.argument = original.argument;
81 public StatementContextBase<?, ?, ?> getParentContext() {
86 public NamespaceStorageNode getParentNamespaceStorage() {
91 public Registry getBehaviourRegistry() {
92 return parent.getBehaviourRegistry();
96 public RootStatementContext<?, ?, ?> getRoot() {
97 return parent.getRoot();
101 public A getStatementArgument() {
106 public StatementContextBase<?, ?, ?> createCopy(final StatementContextBase<?, ?, ?> newParent,
107 final CopyType typeOfCopy) {
108 return createCopy(null, newParent, typeOfCopy);
112 public StatementContextBase<A, D, E> createCopy(final QNameModule newQNameModule,
113 final StatementContextBase<?, ?, ?> newParent, final CopyType typeOfCopy) {
114 final SubstatementContext<A, D, E> copy = new SubstatementContext<>(this, newQNameModule, newParent, typeOfCopy);
116 copy.appendCopyHistory(typeOfCopy, this.getCopyHistory());
118 if (this.getOriginalCtx() != null) {
119 copy.setOriginalCtx(this.getOriginalCtx());
121 copy.setOriginalCtx(this);
124 definition().onStatementAdded(copy);
126 // FIXME: why are we copying both declared and effective statements?
127 copy.copyDeclaredStmts(this, newQNameModule, typeOfCopy);
128 copy.copyEffectiveStmts(this, newQNameModule, typeOfCopy);
132 private void copySubstatement(final StatementContextBase<?, ?, ?> stmtContext,
133 final QNameModule newQNameModule, final CopyType typeOfCopy) {
134 if (needToCopyByUses(stmtContext)) {
135 final StatementContextBase<?, ?, ?> copy = stmtContext.createCopy(newQNameModule, this, typeOfCopy);
136 LOG.debug("Copying substatement {} for {} as", stmtContext, this, copy);
137 this.addEffectiveSubstatement(copy);
138 } else if (isReusedByUses(stmtContext)) {
139 LOG.debug("Reusing substatement {} for {}", stmtContext, this);
140 this.addEffectiveSubstatement(stmtContext);
142 LOG.debug("Skipping statement {}", stmtContext);
146 private void copyDeclaredStmts(final SubstatementContext<A, D, E> original, final QNameModule newQNameModule,
147 final CopyType typeOfCopy) {
148 for (final StatementContextBase<?, ?, ?> stmtContext : original.declaredSubstatements()) {
149 if (StmtContextUtils.areFeaturesSupported(stmtContext)) {
150 copySubstatement(stmtContext, newQNameModule, typeOfCopy);
155 private void copyEffectiveStmts(final SubstatementContext<A, D, E> original, final QNameModule newQNameModule,
156 final CopyType typeOfCopy) {
157 for (final StatementContextBase<?, ?, ?> stmtContext : original.effectiveSubstatements()) {
158 copySubstatement(stmtContext, newQNameModule, typeOfCopy);
162 // FIXME: revise this, as it seems to be wrong
163 private static final Set<Rfc6020Mapping> NOCOPY_FROM_GROUPING_SET = ImmutableSet.of(
164 Rfc6020Mapping.DESCRIPTION,
165 Rfc6020Mapping.REFERENCE,
166 Rfc6020Mapping.STATUS);
167 private static final Set<Rfc6020Mapping> REUSED_DEF_SET = ImmutableSet.of(
169 Rfc6020Mapping.TYPEDEF,
170 Rfc6020Mapping.USES);
172 private static boolean needToCopyByUses(final StmtContext<?, ?, ?> stmtContext) {
173 final StatementDefinition def = stmtContext.getPublicDefinition();
174 if (REUSED_DEF_SET.contains(def)) {
175 LOG.debug("Will reuse {} statement {}", def, stmtContext);
178 if (NOCOPY_FROM_GROUPING_SET.contains(def)) {
179 return !Rfc6020Mapping.GROUPING.equals(stmtContext.getParentContext().getPublicDefinition());
182 LOG.debug("Will copy {} statement {}", def, stmtContext);
186 private static boolean isReusedByUses(final StmtContext<?, ?, ?> stmtContext) {
187 return REUSED_DEF_SET.contains(stmtContext.getPublicDefinition());
190 private boolean isSupportedAsShorthandCase() {
191 final Collection<?> supportedCaseShorthands = getFromNamespace(ValidationBundlesNamespace.class,
192 ValidationBundleType.SUPPORTED_CASE_SHORTHANDS);
193 return supportedCaseShorthands == null || supportedCaseShorthands.contains(getPublicDefinition());
196 private SchemaPath createSchemaPath() {
197 final Optional<SchemaPath> maybeParentPath = parent.getSchemaPath();
198 Verify.verify(maybeParentPath.isPresent(), "Parent %s does not have a SchemaPath", parent);
199 final SchemaPath parentPath = maybeParentPath.get();
201 if (argument instanceof QName) {
202 final QName qname = (QName) argument;
203 if (StmtContextUtils.producesDeclared(this, UsesStatement.class)) {
204 return maybeParentPath.orNull();
207 final SchemaPath path;
208 if ((StmtContextUtils.producesDeclared(getParentContext(), ChoiceStatement.class)
209 || Boolean.TRUE.equals(parent.getFromNamespace(AugmentToChoiceNamespace.class, parent)))
210 && isSupportedAsShorthandCase()) {
211 path = parentPath.createChild(qname);
215 return path.createChild(qname);
217 if (argument instanceof String) {
218 // FIXME: This may yield illegal argument exceptions
219 final StatementContextBase<?, ?, ?> originalCtx = getOriginalCtx();
220 final QName qname = (originalCtx != null) ? Utils.qNameFromArgument(originalCtx, (String) argument) : Utils
221 .qNameFromArgument(this, (String) argument);
222 return parentPath.createChild(qname);
224 if (argument instanceof SchemaNodeIdentifier
225 && (StmtContextUtils.producesDeclared(this, AugmentStatement.class) || StmtContextUtils
226 .producesDeclared(this, RefineStatement.class))) {
228 return parentPath.createChild(((SchemaNodeIdentifier) argument).getPathFromRoot());
230 if (Utils.isUnknownNode(this)) {
231 return parentPath.createChild(getPublicDefinition().getStatementName());
234 // FIXME: this does not look right
235 return maybeParentPath.orNull();
239 public Optional<SchemaPath> getSchemaPath() {
240 SchemaPath local = schemaPath;
242 synchronized (this) {
245 local = createSchemaPath();
252 return Optional.fromNullable(local);
256 public boolean isRootContext() {
261 public boolean isConfiguration() {
262 final StmtContext<Boolean, ?, ?> configStatement = StmtContextUtils.findFirstSubstatement(this,
263 ConfigStatement.class);
266 * If "config" statement is not specified, the default is the same as
267 * the parent schema node's "config" value.
269 if (configStatement == null) {
270 return parent.isConfiguration();
274 * If a parent node has "config" set to "true", the node underneath it
275 * can have "config" set to "true" or "false".
277 if (parent.isConfiguration()) {
278 return configStatement.getStatementArgument();
282 * If a parent node has "config" set to "false", no node underneath it
283 * can have "config" set to "true", therefore only "false" is permitted.
285 if (!configStatement.getStatementArgument()) {
289 throw new InferenceException(
290 "Parent node has config statement set to false, therefore no node underneath it can have config set to true",
291 getStatementSourceReference());
295 public boolean isEnabledSemanticVersioning() {
296 return parent.isEnabledSemanticVersioning();