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.spi.meta;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.common.base.VerifyException;
13 import com.google.common.collect.Iterables;
14 import com.google.common.collect.Streams;
15 import java.util.Collection;
17 import java.util.Optional;
18 import java.util.stream.Stream;
19 import org.eclipse.jdt.annotation.NonNull;
20 import org.eclipse.jdt.annotation.Nullable;
21 import org.opendaylight.yangtools.yang.common.QNameModule;
22 import org.opendaylight.yangtools.yang.common.YangVersion;
23 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
24 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
25 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
27 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
28 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
29 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
30 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
32 public interface StmtContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>> {
34 @NonNull StatementSource getStatementSource();
36 @NonNull StatementSourceReference getStatementSourceReference();
38 @NonNull StatementDefinition getPublicDefinition();
41 * Return the parent statement context, or null if this is the root statement.
43 * @return context of parent of statement, or null if this is the root statement.
45 @Nullable StmtContext<?, ?, ?> getParentContext();
48 * Return the parent statement context, forcing a VerifyException if this is the root statement.
50 * @return context of parent of statement
51 * @throws VerifyException if this statement is the root statement
53 default @NonNull StmtContext<?, ?, ?> coerceParentContext() {
54 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
58 * Return the statement argument in literal format.
60 * @return raw statement argument string, or null if this statement does not have an argument.
62 @Nullable String rawStatementArgument();
65 * Return the statement argument in literal format.
67 * @return raw statement argument string
68 * @throws VerifyException if this statement does not have an argument
70 default @NonNull String coerceRawStatementArgument() {
71 return verifyNotNull(rawStatementArgument(), "Statement context %s does not have an argument", this);
75 * Return the statement argument.
77 * @return statement argument, or null if this statement does not have an argument
79 @Nullable A getStatementArgument();
82 * Return the statement argument in literal format.
84 * @return raw statement argument string
85 * @throws VerifyException if this statement does not have an argument
87 default @NonNull A coerceStatementArgument() {
88 return verifyNotNull(getStatementArgument(), "Statement context %s does not have an argument", this);
92 * Return the {@link SchemaPath} of this statement. Not all statements have a SchemaPath, in which case
93 * {@link Optional#empty()} is returned.
95 * @return Optional SchemaPath
97 @NonNull Optional<SchemaPath> getSchemaPath();
99 boolean isConfiguration();
101 boolean isEnabledSemanticVersioning();
104 * Return a value associated with specified key within a namespace.
106 * @param type Namespace type
108 * @param <K> namespace key type
109 * @param <V> namespace value type
110 * @param <N> namespace type
111 * @param <T> key type
112 * @return Value, or null if there is no element
113 * @throws NamespaceNotAvailableException when the namespace is not available.
115 @NonNull <K, V, T extends K, N extends IdentifierNamespace<K, V>> V getFromNamespace(Class<N> type, T key);
117 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(Class<N> type);
119 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromCurrentStmtCtxNamespace(Class<N> type);
121 @NonNull StmtContext<?, ?, ?> getRoot();
124 * Return declared substatements. These are the statements which are explicitly written in the source model.
126 * @return Collection of declared substatements
128 @NonNull Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements();
131 * Return effective substatements. These are the statements which are added as this statement's substatements
132 * complete their effective model phase.
134 * @return Collection of declared substatements
136 @NonNull Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements();
138 default Iterable<? extends StmtContext<?, ?, ?>> allSubstatements() {
139 return Iterables.concat(declaredSubstatements(), effectiveSubstatements());
142 default Stream<? extends StmtContext<?, ?, ?>> allSubstatementsStream() {
143 return Streams.concat(declaredSubstatements().stream(), effectiveSubstatements().stream());
147 * Builds {@link DeclaredStatement} for statement context.
152 * Builds {@link EffectiveStatement} for statement context.
156 boolean isSupportedToBuildEffective();
158 boolean isSupportedByFeatures();
160 Collection<? extends StmtContext<?, ?, ?>> getEffectOfStatement();
163 * FIXME: YANGTOOLS-784: the next three methods are closely related to the copy process:
164 * - getCopyHistory() is a brief summary of what went on
165 * - getOriginalContext() points to the CopyHistory.ORIGINAL
166 * - getPreviousCopyCtx() points to the immediate predecessor forming a singly-linked list terminated
167 * at getOriginalContext()
169 * When implementing YANGTOOLS-784, this needs to be taken into account and properly forwarded through
170 * intermediate MutableTrees. Also note this closely relates to current namespace context, as taken into
171 * account when creating the argument. At least parts of this are only needed during buildEffective()
172 * and hence should become arguments to that method.
176 * Return the executive summary of the copy process that has produced this context.
178 * @return A simplified summary of the copy process.
180 CopyHistory getCopyHistory();
183 * Return the statement context of the original definition, if this statement is an instantiated copy.
185 * @return Original definition, if this statement was copied.
187 Optional<StmtContext<?, ?, ?>> getOriginalCtx();
190 * Return the context of the previous copy of this statement -- effectively walking towards the source origin
193 * @return Context of the previous copy of this statement, if this statement has been copied.
195 Optional<? extends StmtContext<?, ?, ?>> getPreviousCopyCtx();
197 ModelProcessingPhase getCompletedPhase();
200 * Return version of root statement context.
202 * @return version of root statement context
204 @NonNull YangVersion getRootVersion();
206 interface Mutable<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
207 extends StmtContext<A, D, E> {
210 Mutable<?, ?, ?> getParentContext();
213 default Mutable<?, ?, ?> coerceParentContext() {
214 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
218 * Associate a value with a key within a namespace.
220 * @param type Namespace type
223 * @param <K> namespace key type
224 * @param <V> namespace value type
225 * @param <N> namespace type
226 * @param <T> key type
227 * @param <U> value type
228 * @throws NamespaceNotAvailableException when the namespace is not available.
230 <K, V, T extends K, U extends V, N extends IdentifierNamespace<K, V>> void addToNs(Class<N> type, T key,
234 Mutable<?, ?, ?> getRoot();
237 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
238 * child and recording copy type. Resulting object may only be added as a child of this statement.
240 * @param stmt Statement to be used as a template
241 * @param type Type of copy to record in history
242 * @param targetModule Optional new target module
243 * @return copy of statement considering {@link CopyType} (augment, uses)
245 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
246 * from an alien implementation.
247 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
249 // FIXME: 5.0.0: remove generic arguments X, Y, Z. Callers should not care, as the returned copy can actually
250 // be an encapsulating implicit statement.
251 <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
252 StmtContext<X, Y, Z> stmt, CopyType type, @Nullable QNameModule targetModule);
255 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
256 * child and recording copy type. Resulting object may only be added as a child of this statement.
258 * @param stmt Statement to be used as a template
259 * @param type Type of copy to record in history
260 * @return copy of statement considering {@link CopyType} (augment, uses)
262 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
263 * from an alien implementation.
264 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
266 default <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
267 final StmtContext<X, Y, Z> stmt, final CopyType type) {
268 return childCopyOf(stmt, type, null);
271 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableDeclaredSubstatements();
273 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements();
276 * Create a new inference action to be executed during specified phase. The action cannot be cancelled
277 * and will be executed even if its definition remains incomplete. The specified phase cannot complete until
278 * this action is resolved. If the action cannot be resolved, model processing will fail.
280 * @param phase Target phase in which the action will resolved.
281 * @return A new action builder.
282 * @throws NullPointerException if the specified phase is null
284 @NonNull ModelActionBuilder newInferenceAction(@NonNull ModelProcessingPhase phase);
287 * Adds s statement to namespace map with a key.
290 * {@link StatementNamespace} child that determines namespace to be added to
292 * of type according to namespace class specification
294 * to be added to namespace map
296 <K, KT extends K, N extends StatementNamespace<K, ?, ?>> void addContext(Class<N> namespace, KT key,
297 StmtContext<?, ?, ?> stmt);
300 * Set version of root statement context.
303 * of root statement context
305 void setRootVersion(YangVersion version);
308 * Add mutable statement to seal. Each mutable statement must be sealed
309 * as the last step of statement parser processing.
311 * @param mutableStatement
312 * mutable statement which should be sealed
314 void addMutableStmtToSeal(MutableStatement mutableStatement);
317 * Add required module. Based on these dependencies are collected required sources from library sources.
320 * SourceIdentifier of module required by current root
324 * FIXME: this method is used solely during SOURCE_PRE_LINKAGE reactor phase and does not have a corresponding
325 * getter -- which makes it rather strange. At some point this method needs to be deprecated and its
326 * users migrated to use proper global namespace.
328 void addRequiredSource(SourceIdentifier dependency);
330 void addAsEffectOfStatement(StmtContext<?, ?, ?> ctx);
332 void addAsEffectOfStatement(Collection<? extends StmtContext<?, ?, ?>> ctxs);
335 * Set identifier of current root context.
338 * of current root context, must not be null
340 void setRootIdentifier(SourceIdentifier identifier);
342 void setIsSupportedToBuildEffective(boolean isSupportedToBuild);
344 // FIXME: this seems to be unused, but looks useful.
345 void setCompletedPhase(ModelProcessingPhase completedPhase);