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 static java.util.Objects.requireNonNull;
12 import com.google.common.base.Verify;
13 import java.util.Collection;
14 import java.util.Optional;
15 import javax.annotation.Nonnull;
16 import org.opendaylight.yangtools.util.OptionalBoolean;
17 import org.opendaylight.yangtools.yang.common.QName;
18 import org.opendaylight.yangtools.yang.common.QNameModule;
19 import org.opendaylight.yangtools.yang.common.YangVersion;
20 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
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.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.DeviationStatement;
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.model.repo.api.SourceIdentifier;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyType;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.MutableStatement;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.NamespaceStorageNode;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.StorageNodeType;
37 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
39 import org.opendaylight.yangtools.yang.parser.spi.source.AugmentToChoiceNamespace;
40 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
41 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace;
42 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace.ValidationBundleType;
44 final class SubstatementContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>> extends
45 StatementContextBase<A, D, E> {
46 private final StatementContextBase<?, ?, ?> parent;
47 private final A argument;
50 * Config statements are not all that common which means we are performing a recursive search towards the root
51 * every time {@link #isConfiguration()} is invoked. This is quite expensive because it causes a linear search
52 * for the (usually non-existent) config statement.
55 * This field maintains a resolution cache, so once we have returned a result, we will keep on returning the same
56 * result without performing any lookups.
59 private byte configuration;
62 * This field maintains a resolution cache for ignore config, so once we have returned a result, we will
63 * keep on returning the same result without performing any lookups.
66 private byte ignoreConfig;
69 * This field maintains a resolution cache for ignore if-feature, so once we have returned a result, we will
70 * keep on returning the same result without performing any lookups.
73 private byte ignoreIfFeature;
75 private volatile SchemaPath schemaPath;
77 SubstatementContext(final StatementContextBase<?, ?, ?> parent, final StatementDefinitionContext<A, D, E> def,
78 final StatementSourceReference ref, final String rawArgument) {
79 super(def, ref, rawArgument);
80 this.parent = requireNonNull(parent, "Parent must not be null");
81 this.argument = def.parseArgumentValue(this, rawStatementArgument());
84 SubstatementContext(final StatementContextBase<A, D, E> original, final StatementContextBase<?, ?, ?> parent,
85 final CopyType copyType, final QNameModule targetModule) {
86 super(original, copyType);
87 this.parent = requireNonNull(parent);
88 this.argument = targetModule == null ? original.getStatementArgument()
89 : original.definition().adaptArgumentValue(original, targetModule);
93 public StatementContextBase<?, ?, ?> getParentContext() {
98 public StorageNodeType getStorageNodeType() {
99 return StorageNodeType.STATEMENT_LOCAL;
103 public NamespaceStorageNode getParentNamespaceStorage() {
108 public Registry getBehaviourRegistry() {
109 return parent.getBehaviourRegistry();
114 public RootStatementContext<?, ?, ?> getRoot() {
115 return parent.getRoot();
119 public A getStatementArgument() {
123 private boolean isSupportedAsShorthandCase() {
124 final Collection<?> supportedCaseShorthands = getFromNamespace(ValidationBundlesNamespace.class,
125 ValidationBundleType.SUPPORTED_CASE_SHORTHANDS);
126 return supportedCaseShorthands == null || supportedCaseShorthands.contains(getPublicDefinition());
129 private SchemaPath createSchemaPath() {
130 final Optional<SchemaPath> maybeParentPath = parent.getSchemaPath();
131 Verify.verify(maybeParentPath.isPresent(), "Parent %s does not have a SchemaPath", parent);
132 final SchemaPath parentPath = maybeParentPath.get();
134 if (StmtContextUtils.isUnknownStatement(this)) {
135 return parentPath.createChild(getPublicDefinition().getStatementName());
137 if (argument instanceof QName) {
138 final QName qname = (QName) argument;
139 if (StmtContextUtils.producesDeclared(this, UsesStatement.class)) {
140 return maybeParentPath.orElse(null);
143 final SchemaPath path;
144 if ((StmtContextUtils.producesDeclared(parent, ChoiceStatement.class)
145 || Boolean.TRUE.equals(parent.getFromNamespace(AugmentToChoiceNamespace.class, parent)))
146 && isSupportedAsShorthandCase()) {
147 path = parentPath.createChild(qname);
151 return path.createChild(qname);
153 if (argument instanceof String) {
154 // FIXME: This may yield illegal argument exceptions
155 final Optional<StmtContext<?, ?, ?>> originalCtx = getOriginalCtx();
156 final QName qname = StmtContextUtils.qnameFromArgument(originalCtx.orElse(this), (String) argument);
157 return parentPath.createChild(qname);
159 if (argument instanceof SchemaNodeIdentifier
160 && (StmtContextUtils.producesDeclared(this, AugmentStatement.class)
161 || StmtContextUtils.producesDeclared(this, RefineStatement.class)
162 || StmtContextUtils.producesDeclared(this, DeviationStatement.class))) {
164 return parentPath.createChild(((SchemaNodeIdentifier) argument).getPathFromRoot());
167 // FIXME: this does not look right
168 return maybeParentPath.orElse(null);
173 public Optional<SchemaPath> getSchemaPath() {
174 SchemaPath local = schemaPath;
176 synchronized (this) {
179 local = createSchemaPath();
185 return Optional.ofNullable(local);
189 public boolean isConfiguration() {
190 if (isIgnoringConfig()) {
194 if (OptionalBoolean.isPresent(configuration)) {
195 return OptionalBoolean.get(configuration);
198 final StmtContext<Boolean, ?, ?> configStatement = StmtContextUtils.findFirstSubstatement(this,
199 ConfigStatement.class);
200 final boolean parentIsConfig = parent.isConfiguration();
202 final boolean isConfig;
203 if (configStatement != null) {
204 isConfig = configStatement.coerceStatementArgument();
206 // Validity check: if parent is config=false this cannot be a config=true
207 InferenceException.throwIf(isConfig && !parentIsConfig, getStatementSourceReference(),
208 "Parent node has config=false, this node must not be specifed as config=true");
210 // If "config" statement is not specified, the default is the same as the parent's "config" value.
211 isConfig = parentIsConfig;
214 // Resolved, make sure we cache this return
215 configuration = OptionalBoolean.of(isConfig);
220 public boolean isEnabledSemanticVersioning() {
221 return parent.isEnabledSemanticVersioning();
225 public YangVersion getRootVersion() {
226 return getRoot().getRootVersion();
230 public void setRootVersion(final YangVersion version) {
231 getRoot().setRootVersion(version);
235 public void addMutableStmtToSeal(final MutableStatement mutableStatement) {
236 getRoot().addMutableStmtToSeal(mutableStatement);
240 public void addRequiredSource(final SourceIdentifier dependency) {
241 getRoot().addRequiredSource(dependency);
245 public void setRootIdentifier(final SourceIdentifier identifier) {
246 getRoot().setRootIdentifier(identifier);
250 protected boolean isIgnoringIfFeatures() {
251 if (OptionalBoolean.isPresent(ignoreIfFeature)) {
252 return OptionalBoolean.get(ignoreIfFeature);
255 final boolean ret = definition().isIgnoringIfFeatures() || parent.isIgnoringIfFeatures();
256 ignoreIfFeature = OptionalBoolean.of(ret);
262 protected boolean isIgnoringConfig() {
263 if (OptionalBoolean.isPresent(ignoreConfig)) {
264 return OptionalBoolean.get(ignoreConfig);
267 final boolean ret = definition().isIgnoringConfig() || parent.isIgnoringConfig();
268 ignoreConfig = OptionalBoolean.of(ret);
274 protected boolean isParentSupportedByFeatures() {
275 return parent.isSupportedByFeatures();