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.parser.stmt.rfc6020;
10 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.SOURCE_LINKAGE;
11 import static org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils.firstAttributeOf;
12 import com.google.common.base.Optional;
14 import java.util.Collection;
15 import java.util.Date;
17 import java.util.Map.Entry;
18 import org.opendaylight.yangtools.yang.common.SimpleDateFormatUtil;
19 import org.opendaylight.yangtools.yang.model.api.ModuleIdentifier;
20 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
21 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.ImportStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.ModuleStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.NamespaceStatement;
25 import org.opendaylight.yangtools.yang.model.api.stmt.PrefixStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.RevisionDateStatement;
27 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleIdentifierImpl;
28 import org.opendaylight.yangtools.yang.parser.spi.ModuleNamespace;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
36 import org.opendaylight.yangtools.yang.parser.spi.source.ImpPrefixToModuleIdentifier;
37 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.ImportEffectiveStatementImpl;
39 public class ImportStatementDefinition
40 extends AbstractStatementSupport<String, ImportStatement, EffectiveStatement<String, ImportStatement>> {
42 public ImportStatementDefinition() {
43 super(Rfc6020Mapping.IMPORT);
47 public String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
52 public ImportStatement createDeclared(
53 final StmtContext<String, ImportStatement, ?> ctx) {
54 return new ImportStatementImpl(ctx);
58 public EffectiveStatement<String, ImportStatement> createEffective(
59 final StmtContext<String, ImportStatement, EffectiveStatement<String, ImportStatement>> ctx) {
60 return new ImportEffectiveStatementImpl(ctx);
64 public void onLinkageDeclared(
65 final Mutable<String, ImportStatement, EffectiveStatement<String, ImportStatement>> stmt) {
66 final ModuleIdentifier impIdentifier = getImportedModuleIdentifier(stmt);
67 final ModelActionBuilder importAction = stmt.newInferenceAction(SOURCE_LINKAGE);
68 final Prerequisite<StmtContext<?, ?, ?>> imported = importAction.requiresCtx(stmt, ModuleNamespace.class,
69 impIdentifier, SOURCE_LINKAGE);
70 final Prerequisite<Mutable<?, ?, ?>> linkageTarget = importAction.mutatesCtx(stmt.getRoot(), SOURCE_LINKAGE);
72 importAction.apply(new InferenceAction() {
74 public void apply() throws InferenceException {
75 StmtContext<?, ?, ?> importedModule = null;
76 ModuleIdentifier importedModuleIdentifier = null;
77 if (impIdentifier.getRevision() == SimpleDateFormatUtil.DEFAULT_DATE_IMP) {
78 Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> recentModuleEntry = findRecentModule(
79 impIdentifier, stmt.getAllFromNamespace(ModuleNamespace.class));
80 if (recentModuleEntry != null) {
81 importedModuleIdentifier = recentModuleEntry.getKey();
82 importedModule = recentModuleEntry.getValue();
86 if (importedModule == null || importedModuleIdentifier == null) {
87 importedModule = imported.get();
88 importedModuleIdentifier = impIdentifier;
91 linkageTarget.get().addToNs(ImportedModuleContext.class, importedModuleIdentifier, importedModule);
92 String impPrefix = firstAttributeOf(stmt.declaredSubstatements(), PrefixStatement.class);
93 stmt.addToNs(ImpPrefixToModuleIdentifier.class, impPrefix, importedModuleIdentifier);
95 final URI modNs = firstAttributeOf(importedModule.declaredSubstatements(), NamespaceStatement.class);
96 stmt.addToNs(URIStringToImpPrefix.class, modNs.toString(), impPrefix);
99 private Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> findRecentModule(
100 final ModuleIdentifier impIdentifier,
101 final Map<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> allModules) {
103 ModuleIdentifier recentModuleIdentifier = impIdentifier;
104 Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> recentModuleEntry = null;
106 for (Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> moduleEntry : allModules.entrySet()) {
107 if (moduleEntry.getKey().getName().equals(impIdentifier.getName())
108 && moduleEntry.getKey().getRevision().compareTo(recentModuleIdentifier.getRevision()) > 0) {
109 recentModuleIdentifier = moduleEntry.getKey();
110 recentModuleEntry = moduleEntry;
114 return recentModuleEntry;
118 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
119 if (failed.contains(imported)) {
120 throw new InferenceException(String.format("Imported module [%s] was not found.", impIdentifier),
121 stmt.getStatementSourceReference());
127 private static ModuleIdentifier getImportedModuleIdentifier(final Mutable<String, ImportStatement, ?> stmt) {
128 Date revision = firstAttributeOf(stmt.declaredSubstatements(), RevisionDateStatement.class);
129 if (revision == null) {
130 revision = SimpleDateFormatUtil.DEFAULT_DATE_IMP;
133 return new ModuleIdentifierImpl(stmt.getStatementArgument(), Optional.<URI> absent(),
134 Optional.<Date> of(revision));