2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.rfc7950.stmt.grouping;
10 import com.google.common.collect.ImmutableList;
11 import java.util.Collection;
12 import org.opendaylight.yangtools.yang.common.QName;
13 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
14 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
15 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
16 import org.opendaylight.yangtools.yang.model.api.stmt.GroupingEffectiveStatement;
17 import org.opendaylight.yangtools.yang.model.api.stmt.GroupingStatement;
18 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseQNameStatementSupport;
19 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.SubstatementIndexingException;
20 import org.opendaylight.yangtools.yang.parser.spi.GroupingNamespace;
21 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
30 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
32 abstract class AbstractGroupingStatementSupport
33 extends BaseQNameStatementSupport<GroupingStatement, GroupingEffectiveStatement> {
34 AbstractGroupingStatementSupport() {
35 super(YangStmtMapping.GROUPING, CopyPolicy.DECLARED_COPY);
39 public final QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
40 return StmtContextUtils.parseIdentifier(ctx, value);
44 public final void onFullDefinitionDeclared(
45 final Mutable<QName, GroupingStatement, GroupingEffectiveStatement> stmt) {
46 super.onFullDefinitionDeclared(stmt);
48 final Mutable<?, ?, ?> parent = stmt.getParentContext();
50 // Shadowing check: make sure we do not trample on pre-existing definitions. This catches sibling
51 // declarations and parent declarations which have already been declared.
52 checkConflict(parent, stmt);
53 parent.addContext(GroupingNamespace.class, stmt.getArgument(), stmt);
55 final StmtContext<?, ?, ?> grandParent = parent.getParentContext();
56 if (grandParent != null) {
57 // Shadowing check: make sure grandparent does not see a conflicting definition. This is required to
58 // ensure that a grouping in child scope does not shadow a grouping in parent scope which occurs later
59 // in the text. For that check we need the full declaration of our model.
60 final ModelActionBuilder action = stmt.newInferenceAction(ModelProcessingPhase.FULL_DECLARATION);
61 action.requiresCtx(grandParent.getRoot(), ModelProcessingPhase.FULL_DECLARATION);
62 action.apply(new InferenceAction() {
64 public void apply(final InferenceContext ctx) {
65 checkConflict(grandParent, stmt);
69 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
78 protected final GroupingStatement createDeclared(final StmtContext<QName, GroupingStatement, ?> ctx,
79 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
80 return new RegularGroupingStatement(ctx.getArgument(), substatements);
84 protected final GroupingStatement createEmptyDeclared(final StmtContext<QName, GroupingStatement, ?> ctx) {
85 return new EmptyGroupingStatement(ctx.getArgument());
89 protected GroupingEffectiveStatement createEffective(final Current<QName, GroupingStatement> stmt,
90 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
92 return new GroupingEffectiveStatementImpl(stmt.declared(), substatements,
93 historyAndStatusFlags(stmt.history(), substatements), stmt.wrapSchemaPath());
94 } catch (SubstatementIndexingException e) {
95 throw new SourceException(e.getMessage(), stmt, e);
99 private static void checkConflict(final StmtContext<?, ?, ?> parent, final StmtContext<QName, ?, ?> stmt) {
100 final QName arg = stmt.getArgument();
101 final StmtContext<?, ?, ?> existing = parent.getFromNamespace(GroupingNamespace.class, arg);
102 SourceException.throwIf(existing != null, stmt, "Duplicate name for grouping %s", arg);