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.model.api.meta;
10 import javax.annotation.Nonnull;
11 import javax.annotation.Nullable;
16 * There are two base types of model statements:
18 * <li>{@link DeclaredStatement} - Statement representation as was defined in original
19 * source. This representation could be used during computation of effective model
20 * or during transforming YANG model from one serialization format to other.
23 * {@link EffectiveStatement} - Representation of effective statement - this
24 * statement may be different from declared, in such way, that it contains additional
25 * substatements, provides access to model namespaces. Some effective statements may be not
26 * directly declared in YANG source, but could be inferred by semantic processing of
27 * other statements (eg. uses, augment).
31 * @param <A> Argument type ({@link Void} if statement does not have argument.)
33 public interface ModelStatement<A> {
35 * Statement Definition of this statement.
37 * @return definition of this statement.
39 @Nonnull StatementDefinition statementDefinition();
42 * Returns statement argument
44 * @return statement argument or null if statement does not have argument.
46 @Nullable A argument();
49 * Returns statement source, which denotes if statement was
50 * explicitly declared in original model or inferred during
51 * semantic processing of model.
53 * @return statement source.
55 @Nonnull StatementSource getStatementSource();