*/
package org.opendaylight.yangtools.yang.parser.spi.meta;
+import static com.google.common.base.Verify.verifyNotNull;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.VerifyException;
import com.google.common.collect.Iterables;
import com.google.common.collect.Streams;
import java.util.Collection;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Stream;
-import javax.annotation.Nullable;
import org.eclipse.jdt.annotation.NonNull;
+import org.eclipse.jdt.annotation.Nullable;
import org.opendaylight.yangtools.yang.common.QNameModule;
import org.opendaylight.yangtools.yang.common.YangVersion;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
+/**
+ * An inference context associated with an instance of a statement.
+ *
+ * @param <A> Argument type
+ * @param <D> Declared Statement representation
+ * @param <E> Effective Statement representation
+ */
public interface StmtContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>> {
-
+ /**
+ * Returns the origin of the statement.
+ *
+ * @return origin of statement
+ */
@NonNull StatementSource getStatementSource();
+ /**
+ * Returns a reference to statement source.
+ *
+ * @return reference of statement source
+ */
@NonNull StatementSourceReference getStatementSourceReference();
+ /**
+ * See {@link StatementSupport#getPublicView()}.
+ */
@NonNull StatementDefinition getPublicDefinition();
/**
*
* @return context of parent of statement, or null if this is the root statement.
*/
- @Nullable
- StmtContext<?, ?, ?> getParentContext();
+ @Nullable StmtContext<?, ?, ?> getParentContext();
+
+ /**
+ * Return the parent statement context, forcing a VerifyException if this is the root statement.
+ *
+ * @return context of parent of statement
+ * @throws VerifyException if this statement is the root statement
+ */
+ default @NonNull StmtContext<?, ?, ?> coerceParentContext() {
+ return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
+ }
+
+ /**
+ * Return the statement argument in literal format.
+ *
+ * @return raw statement argument string, or null if this statement does not have an argument.
+ */
+ @Nullable String rawStatementArgument();
+
+ /**
+ * Return the statement argument in literal format.
+ *
+ * @return raw statement argument string
+ * @throws VerifyException if this statement does not have an argument
+ */
+ default @NonNull String coerceRawStatementArgument() {
+ return verifyNotNull(rawStatementArgument(), "Statement context %s does not have an argument", this);
+ }
+
+ /**
+ * Return the statement argument.
+ *
+ * @return statement argument, or null if this statement does not have an argument
+ */
+ @Nullable A getStatementArgument();
/**
* Return the statement argument in literal format.
*
* @return raw statement argument string
+ * @throws VerifyException if this statement does not have an argument
*/
- @Nullable
- String rawStatementArgument();
+ default @NonNull A coerceStatementArgument() {
+ return verifyNotNull(getStatementArgument(), "Statement context %s does not have an argument", this);
+ }
- @Nullable
- A getStatementArgument();
+ default <X, Y extends DeclaredStatement<X>> boolean producesDeclared(final Class<? super Y> type) {
+ return type.isAssignableFrom(getPublicDefinition().getDeclaredRepresentationClass());
+ }
+
+ default <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<A, D>> boolean producesEffective(
+ final Class<? super Z> type) {
+ return type.isAssignableFrom(getPublicDefinition().getEffectiveRepresentationClass());
+ }
/**
* Return the {@link SchemaPath} of this statement. Not all statements have a SchemaPath, in which case
* {@link Optional#empty()} is returned.
*
* @return Optional SchemaPath
+ * @deprecated Use of SchemaPath in the context of effective statements is going away. Consider not providing this
+ * information, if your users can exist without it.
*/
+ @Deprecated
@NonNull Optional<SchemaPath> getSchemaPath();
boolean isConfiguration();
* @return Value, or null if there is no element
* @throws NamespaceNotAvailableException when the namespace is not available.
*/
- @NonNull <K, V, T extends K, N extends IdentifierNamespace<K, V>> V getFromNamespace(Class<N> type, T key) ;
+ <K, V, T extends K, N extends IdentifierNamespace<K, V>> @Nullable V getFromNamespace(Class<N> type, T key);
- <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(
- Class<N> type);
+ <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(Class<N> type);
<K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromCurrentStmtCtxNamespace(Class<N> type);
boolean isSupportedToBuildEffective();
+ boolean isSupportedByFeatures();
+
Collection<? extends StmtContext<?, ?, ?>> getEffectOfStatement();
+ /*
+ * FIXME: YANGTOOLS-784: the next three methods are closely related to the copy process:
+ * - getCopyHistory() is a brief summary of what went on
+ * - getOriginalContext() points to the CopyHistory.ORIGINAL
+ * - getPreviousCopyCtx() points to the immediate predecessor forming a singly-linked list terminated
+ * at getOriginalContext()
+ *
+ * When implementing YANGTOOLS-784, this needs to be taken into account and properly forwarded through
+ * intermediate MutableTrees. Also note this closely relates to current namespace context, as taken into
+ * account when creating the argument. At least parts of this are only needed during buildEffective()
+ * and hence should become arguments to that method.
+ */
+
+ /**
+ * Return the executive summary of the copy process that has produced this context.
+ *
+ * @return A simplified summary of the copy process.
+ */
CopyHistory getCopyHistory();
- boolean isSupportedByFeatures();
+ /**
+ * Return the statement context of the original definition, if this statement is an instantiated copy.
+ *
+ * @return Original definition, if this statement was copied.
+ */
+ Optional<StmtContext<A, D, E>> getOriginalCtx();
- Optional<StmtContext<?, ?, ?>> getOriginalCtx();
+ /**
+ * Return the context of the previous copy of this statement -- effectively walking towards the source origin
+ * of this statement.
+ *
+ * @return Context of the previous copy of this statement, if this statement has been copied.
+ */
+ Optional<StmtContext<A, D, E>> getPreviousCopyCtx();
ModelProcessingPhase getCompletedPhase();
*/
@NonNull YangVersion getRootVersion();
+ /**
+ * An mutable view of an inference context associated with an instance of a statement.
+ *
+ * @param <A> Argument type
+ * @param <D> Declared Statement representation
+ * @param <E> Effective Statement representation
+ */
interface Mutable<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
extends StmtContext<A, D, E> {
@Override
Mutable<?, ?, ?> getParentContext();
+ @Override
+ default Mutable<?, ?, ?> coerceParentContext() {
+ return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
+ }
+
/**
* Associate a value with a key within a namespace.
*
* from an alien implementation.
* @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
*/
- <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
- StmtContext<X, Y, Z> stmt, CopyType type, @Nullable QNameModule targetModule);
+ Mutable<?, ?, ?> childCopyOf(StmtContext<?, ?, ?> stmt, CopyType type, @Nullable QNameModule targetModule);
/**
* Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
* from an alien implementation.
* @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
*/
- default <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
- final StmtContext<X, Y, Z> stmt, final CopyType type) {
+ default Mutable<?, ?, ?> childCopyOf(final StmtContext<?, ?, ?> stmt, final CopyType type) {
return childCopyOf(stmt, type, null);
}
+ @Beta
+ @NonNull Optional<? extends Mutable<?, ?, ?>> copyAsChildOf(Mutable<?, ?, ?> parent, CopyType type,
+ @Nullable QNameModule targetModule);
+
+ @Override
+ default Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements() {
+ return mutableDeclaredSubstatements();
+ }
+
@NonNull Collection<? extends Mutable<?, ?, ?>> mutableDeclaredSubstatements();
+ @Override
+ default Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements() {
+ return mutableEffectiveSubstatements();
+ }
+
@NonNull Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements();
/**
void setRootIdentifier(SourceIdentifier identifier);
void setIsSupportedToBuildEffective(boolean isSupportedToBuild);
-
- // FIXME: this seems to be unused, but looks useful.
- void setCompletedPhase(ModelProcessingPhase completedPhase);
}
}
Code Review / yangtools.git / blobdiff