*/
package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.typedef;
+import static com.google.common.base.Preconditions.checkState;
+
+import com.google.common.collect.ImmutableList;
+import java.util.Collection;
import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.model.api.Status;
import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
+import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
import org.opendaylight.yangtools.yang.model.api.stmt.TypedefStatement;
+import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseQNameStatementSupport;
+import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
+import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStmtUtils;
import org.opendaylight.yangtools.yang.parser.spi.TypeNamespace;
-import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractQNameStatementSupport;
+import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
+import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
public final class TypedefStatementSupport extends
- AbstractQNameStatementSupport<TypedefStatement, EffectiveStatement<QName, TypedefStatement>> {
+ BaseQNameStatementSupport<TypedefStatement, TypedefEffectiveStatement> {
private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
YangStmtMapping.TYPEDEF)
.addOptional(YangStmtMapping.DEFAULT)
.addMandatory(YangStmtMapping.TYPE)
.addOptional(YangStmtMapping.UNITS)
.build();
+ private static final TypedefStatementSupport INSTANCE = new TypedefStatementSupport();
- public TypedefStatementSupport() {
- super(YangStmtMapping.TYPEDEF);
- }
-
- @Override
- public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
- return StmtContextUtils.qnameFromArgument(ctx, value);
+ private TypedefStatementSupport() {
+ super(YangStmtMapping.TYPEDEF, StatementPolicy.reject());
}
- @Override
- public TypedefStatement createDeclared(final StmtContext<QName, TypedefStatement, ?> ctx) {
- return new TypedefStatementImpl(ctx);
+ public static TypedefStatementSupport getInstance() {
+ return INSTANCE;
}
@Override
- public EffectiveStatement<QName, TypedefStatement> createEffective(
- final StmtContext<QName, TypedefStatement, EffectiveStatement<QName, TypedefStatement>> ctx) {
- return new TypedefEffectiveStatementImpl(ctx);
+ public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
+ return StmtContextUtils.parseIdentifier(ctx, value);
}
@Override
- public void onFullDefinitionDeclared(final StmtContext.Mutable<QName, TypedefStatement,
- EffectiveStatement<QName, TypedefStatement>> stmt) {
+ public void onFullDefinitionDeclared(final Mutable<QName, TypedefStatement, TypedefEffectiveStatement> stmt) {
super.onFullDefinitionDeclared(stmt);
- if (stmt != null && stmt.getParentContext() != null) {
- final StmtContext<?, TypedefStatement, TypedefEffectiveStatement> existing = stmt.getParentContext()
- .getFromNamespace(TypeNamespace.class, stmt.getStatementArgument());
- SourceException.throwIf(existing != null, stmt.getStatementSourceReference(),
- "Duplicate name for typedef %s", stmt.getStatementArgument());
+ final Mutable<?, ?, ?> parent = stmt.getParentContext();
+ if (parent != null) {
+ // Shadowing check: make sure we do not trample on pre-existing definitions. This catches sibling
+ // declarations and parent declarations which have already been declared.
+ checkConflict(parent, stmt);
+ parent.addContext(TypeNamespace.class, stmt.getArgument(), stmt);
+
+ final StmtContext<?, ?, ?> grandParent = parent.getParentContext();
+ if (grandParent != null) {
+ // Shadowing check: make sure grandparent does not see a conflicting definition. This is required to
+ // ensure that a typedef in child scope does not shadow a typedef in parent scope which occurs later in
+ // the text. For that check we need the full declaration of our model.
+
+ final ModelActionBuilder action = stmt.newInferenceAction(ModelProcessingPhase.FULL_DECLARATION);
+ action.requiresCtx(grandParent.getRoot(), ModelProcessingPhase.FULL_DECLARATION);
+ action.apply(new InferenceAction() {
+ @Override
+ public void apply(final InferenceContext ctx) {
+ checkConflict(grandParent, stmt);
+ }
- stmt.getParentContext().addContext(TypeNamespace.class, stmt.getStatementArgument(), stmt);
+ @Override
+ public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
+ // No-op
+ }
+ });
+ }
}
}
protected SubstatementValidator getSubstatementValidator() {
return SUBSTATEMENT_VALIDATOR;
}
+
+ @Override
+ protected TypedefStatement createDeclared(final StmtContext<QName, TypedefStatement, ?> ctx,
+ final ImmutableList<? extends DeclaredStatement<?>> substatements) {
+ return new RegularTypedefStatement(ctx.getArgument(), substatements);
+ }
+
+ @Override
+ protected TypedefStatement createEmptyDeclared(final StmtContext<QName, TypedefStatement, ?> ctx) {
+ return new EmptyTypedefStatement(ctx.getArgument());
+ }
+
+ @Override
+ protected TypedefEffectiveStatement createEffective(final Current<QName, TypedefStatement> stmt,
+ final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+ final TypedefStatement declared = stmt.declared();
+ checkState(!substatements.isEmpty(), "Refusing to create empty typedef for %s", stmt.declared());
+
+ final TypeEffectiveStatement<?> typeEffectiveStmt = findFirstStatement(substatements,
+ TypeEffectiveStatement.class);
+ final String dflt = findFirstArgument(substatements, DefaultEffectiveStatement.class, null);
+ SourceException.throwIf(
+ EffectiveStmtUtils.hasDefaultValueMarkedWithIfFeature(stmt.yangVersion(), typeEffectiveStmt, dflt), stmt,
+ "Typedef '%s' has default value '%s' marked with an if-feature statement.", stmt.argument(), dflt);
+
+ return new TypedefEffectiveStatementImpl(declared, stmt.wrapSchemaPath(), computeFlags(substatements),
+ substatements);
+ }
+
+ private static void checkConflict(final StmtContext<?, ?, ?> parent, final StmtContext<QName, ?, ?> stmt) {
+ final QName arg = stmt.getArgument();
+ final StmtContext<?, ?, ?> existing = parent.getFromNamespace(TypeNamespace.class, arg);
+ // RFC7950 sections 5.5 and 6.2.1: identifiers must not be shadowed
+ SourceException.throwIf(existing != null, stmt, "Duplicate name for typedef %s", arg);
+ }
+
+ private static int computeFlags(final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
+ return new FlagsBuilder()
+ .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
+ .toFlags();
+ }
}
\ No newline at end of file
Code Review / yangtools.git / blobdiff