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.SubstatementValidator;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
34 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
35 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
36 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
37 import org.opendaylight.yangtools.yang.parser.spi.source.ImpPrefixToModuleIdentifier;
38 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.ImportEffectiveStatementImpl;
40 public class ImportStatementDefinition
41 extends AbstractStatementSupport<String, ImportStatement, EffectiveStatement<String, ImportStatement>> {
42 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
43 SubstatementValidator.builder(Rfc6020Mapping.IMPORT)
44 .add(Rfc6020Mapping.PREFIX, 1, 1).add(Rfc6020Mapping.REVISION_DATE, 0, 1).build();
46 public ImportStatementDefinition() {
47 super(Rfc6020Mapping.IMPORT);
51 public String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
56 public ImportStatement createDeclared(final StmtContext<String, ImportStatement, ?> ctx) {
57 return new ImportStatementImpl(ctx);
61 public EffectiveStatement<String, ImportStatement> createEffective(
62 final StmtContext<String, ImportStatement, EffectiveStatement<String, ImportStatement>> ctx) {
63 return new ImportEffectiveStatementImpl(ctx);
67 public void onFullDefinitionDeclared(
68 final Mutable<String, ImportStatement, EffectiveStatement<String, ImportStatement>> stmt) {
69 super.onFullDefinitionDeclared(stmt);
70 SUBSTATEMENT_VALIDATOR.validate(stmt);
74 public void onLinkageDeclared(
75 final Mutable<String, ImportStatement, EffectiveStatement<String, ImportStatement>> stmt) {
76 final ModuleIdentifier impIdentifier = getImportedModuleIdentifier(stmt);
77 final ModelActionBuilder importAction = stmt.newInferenceAction(SOURCE_LINKAGE);
78 final Prerequisite<StmtContext<?, ?, ?>> imported = importAction.requiresCtx(stmt, ModuleNamespace.class,
79 impIdentifier, SOURCE_LINKAGE);
80 final Prerequisite<Mutable<?, ?, ?>> linkageTarget = importAction.mutatesCtx(stmt.getRoot(), SOURCE_LINKAGE);
82 importAction.apply(new InferenceAction() {
85 StmtContext<?, ?, ?> importedModule = null;
86 ModuleIdentifier importedModuleIdentifier = null;
87 if (impIdentifier.getRevision() == SimpleDateFormatUtil.DEFAULT_DATE_IMP) {
88 Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> recentModuleEntry =
89 findRecentModule(impIdentifier, stmt.getAllFromNamespace(ModuleNamespace.class));
90 if (recentModuleEntry != null) {
91 importedModuleIdentifier = recentModuleEntry.getKey();
92 importedModule = recentModuleEntry.getValue();
96 if (importedModule == null || importedModuleIdentifier == null) {
97 importedModule = imported.get();
98 importedModuleIdentifier = impIdentifier;
101 linkageTarget.get().addToNs(ImportedModuleContext.class, importedModuleIdentifier, importedModule);
102 String impPrefix = firstAttributeOf(stmt.declaredSubstatements(), PrefixStatement.class);
103 stmt.addToNs(ImpPrefixToModuleIdentifier.class, impPrefix, importedModuleIdentifier);
105 final URI modNs = firstAttributeOf(importedModule.declaredSubstatements(), NamespaceStatement.class);
106 stmt.addToNs(URIStringToImpPrefix.class, modNs.toString(), impPrefix);
109 private Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> findRecentModule(
110 final ModuleIdentifier impIdentifier,
111 final Map<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> allModules) {
113 ModuleIdentifier recentModuleIdentifier = impIdentifier;
114 Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> recentModuleEntry = null;
116 for (Entry<ModuleIdentifier, StmtContext<?, ModuleStatement, EffectiveStatement<String, ModuleStatement>>> moduleEntry : allModules.entrySet()) {
117 final ModuleIdentifier id = moduleEntry.getKey();
119 if (id.getName().equals(impIdentifier.getName())
120 && id.getRevision().compareTo(recentModuleIdentifier.getRevision()) > 0) {
121 recentModuleIdentifier = id;
122 recentModuleEntry = moduleEntry;
126 return recentModuleEntry;
130 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
131 if (failed.contains(imported)) {
132 throw new InferenceException(stmt.getStatementSourceReference(),
133 "Imported module [%s] was not found.", impIdentifier);
141 private static ModuleIdentifier getImportedModuleIdentifier(final Mutable<String, ImportStatement, ?> stmt) {
142 Date revision = firstAttributeOf(stmt.declaredSubstatements(), RevisionDateStatement.class);
143 if (revision == null) {
144 revision = SimpleDateFormatUtil.DEFAULT_DATE_IMP;
147 return new ModuleIdentifierImpl(stmt.getStatementArgument(), Optional.<URI> absent(),
148 Optional.<Date> of(revision));