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
9 package org.opendaylight.yangtools.yang.parser.spi.meta;
11 import com.google.common.base.Predicates;
12 import com.google.common.collect.Collections2;
13 import com.google.common.collect.ImmutableList;
14 import com.google.common.collect.Iterables;
15 import java.util.Collection;
16 import javax.annotation.Nonnull;
17 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
18 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
19 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
22 * Utility abstract base class for implementing declared statements.
24 * @param <A> Argument type.
26 public abstract class AbstractDeclaredStatement<A> implements DeclaredStatement<A> {
27 private final A argument;
28 private final String rawArgument;
29 private final ImmutableList<? extends DeclaredStatement<?>> substatements;
30 private final StatementDefinition definition;
31 private final StatementSource source;
33 protected AbstractDeclaredStatement(final StmtContext<A,?,?> context) {
34 rawArgument = context.rawStatementArgument();
35 argument = context.getStatementArgument();
36 source = context.getStatementSource();
37 definition = context.getPublicDefinition();
39 * Perform an explicit copy, because Collections2.transform() is lazily transformed and retains pointer to
40 * original collection, which may contains references to mutable context.
42 substatements = ImmutableList.copyOf(Collections2.transform(context.declaredSubstatements(),
43 StmtContext::buildDeclared));
46 protected final <S extends DeclaredStatement<?>> S firstDeclared(final Class<S> type) {
47 return type.cast(Iterables.find(substatements, Predicates.instanceOf(type)));
51 public String rawArgument() {
62 public StatementDefinition statementDefinition() {
68 public Collection<? extends DeclaredStatement<?>> declaredSubstatements() {
74 public StatementSource getStatementSource() {
78 @SuppressWarnings("unchecked")
79 protected final <S extends DeclaredStatement<?>> Collection<? extends S> allDeclared(final Class<S> type) {
80 return Collection.class.cast(Collections2.filter(substatements, Predicates.instanceOf(type)));