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.path;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.collect.ImmutableList;
13 import org.opendaylight.yangtools.yang.model.api.PathExpression;
14 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
15 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
16 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
17 import org.opendaylight.yangtools.yang.model.api.stmt.PathEffectiveStatement;
18 import org.opendaylight.yangtools.yang.model.api.stmt.PathStatement;
19 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
20 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
21 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
24 public final class PathStatementSupport
25 extends BaseStatementSupport<PathExpression, PathStatement, PathEffectiveStatement> {
26 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
27 YangStmtMapping.PATH).build();
28 private static final PathStatementSupport LENIENT_INSTANCE = new PathStatementSupport(
29 new PathExpressionParser.Lenient());
30 private static final PathStatementSupport STRICT_INSTANCE = new PathStatementSupport(
31 new PathExpressionParser());
33 private final PathExpressionParser parser;
35 private PathStatementSupport(final PathExpressionParser parser) {
36 // TODO: can 'path' really be copied?
37 super(YangStmtMapping.PATH, StatementPolicy.contextIndependent());
38 this.parser = requireNonNull(parser);
41 public static PathStatementSupport lenientInstance() {
42 return LENIENT_INSTANCE;
45 public static PathStatementSupport strictInstance() {
46 return STRICT_INSTANCE;
50 public PathExpression parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
51 return parser.parseExpression(ctx, value);
55 protected SubstatementValidator getSubstatementValidator() {
56 return SUBSTATEMENT_VALIDATOR;
60 protected PathStatement createDeclared(final StmtContext<PathExpression, PathStatement, ?> ctx,
61 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
62 return new RegularPathStatement(ctx.getArgument(), substatements);
66 protected PathStatement createEmptyDeclared(final StmtContext<PathExpression, PathStatement, ?> ctx) {
67 return new EmptyPathStatement(ctx.getArgument());
71 protected PathEffectiveStatement createEffective(final Current<PathExpression, PathStatement> stmt,
72 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
73 return substatements.isEmpty() ? new EmptyPathEffectiveStatement(stmt.declared())
74 : new RegularPathEffectiveStatement(stmt.declared(), substatements);