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.import_;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.SOURCE_LINKAGE;
12 import static org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils.firstAttributeOf;
14 import com.google.common.base.MoreObjects.ToStringHelper;
15 import java.util.Collection;
16 import java.util.Optional;
17 import org.opendaylight.yangtools.concepts.SemVer;
18 import org.opendaylight.yangtools.yang.common.Empty;
19 import org.opendaylight.yangtools.yang.common.QNameModule;
20 import org.opendaylight.yangtools.yang.model.api.stmt.ImportEffectiveStatement;
21 import org.opendaylight.yangtools.yang.model.api.stmt.ImportStatement;
22 import org.opendaylight.yangtools.yang.model.api.stmt.PrefixStatement;
23 import org.opendaylight.yangtools.yang.model.repo.api.SemVerSourceIdentifier;
24 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
25 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.ModuleQNameToPrefix;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
30 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
31 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceKeyCriterion;
32 import org.opendaylight.yangtools.yang.parser.spi.meta.SemanticVersionModuleNamespace;
33 import org.opendaylight.yangtools.yang.parser.spi.meta.SemanticVersionNamespace;
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.ImportPrefixToModuleCtx;
37 import org.opendaylight.yangtools.yang.parser.spi.source.ImportPrefixToSemVerSourceIdentifier;
38 import org.opendaylight.yangtools.yang.parser.spi.source.ImportedModuleContext;
39 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleCtxToModuleQName;
40 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleCtxToSourceIdentifier;
42 final class SemanticVersionImport {
44 private abstract static class CompatibleCriterion extends NamespaceKeyCriterion<SemVerSourceIdentifier> {
45 private final String moduleName;
47 CompatibleCriterion(final String moduleName) {
48 this.moduleName = requireNonNull(moduleName);
52 public boolean match(final SemVerSourceIdentifier key) {
53 return moduleName.equals(key.getName());
57 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
58 return toStringHelper.add("moduleName", moduleName);
62 private static final class NoVerCompatibleCriterion extends SemanticVersionImport.CompatibleCriterion {
63 NoVerCompatibleCriterion(final String moduleName) {
68 public SemVerSourceIdentifier select(final SemVerSourceIdentifier first,
69 final SemVerSourceIdentifier second) {
70 // TODO Auto-generated method stub
75 private static final class SemVerCompatibleCriterion extends SemanticVersionImport.CompatibleCriterion {
76 private final SemVer semVer;
78 SemVerCompatibleCriterion(final String moduleName, final SemVer semVer) {
80 this.semVer = requireNonNull(semVer);
84 public boolean match(final SemVerSourceIdentifier key) {
85 if (!super.match(key)) {
88 final Optional<SemVer> optKeyVer = key.getSemanticVersion();
89 if (!optKeyVer.isPresent()) {
93 final SemVer keyVer = optKeyVer.get();
94 if (semVer.getMajor() != keyVer.getMajor()) {
97 if (semVer.getMinor() > keyVer.getMinor()) {
100 return semVer.getMinor() < keyVer.getMinor() || semVer.getPatch() <= keyVer.getPatch();
104 public SemVerSourceIdentifier select(final SemVerSourceIdentifier first,
105 final SemVerSourceIdentifier second) {
106 return first.getSemanticVersion().get().compareTo(second.getSemanticVersion().get()) >= 0 ? first
111 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
112 return super.addToStringAttributes(toStringHelper).add("version", semVer);
116 private SemanticVersionImport() {
120 static void onLinkageDeclared(final Mutable<String, ImportStatement, ImportEffectiveStatement> stmt) {
121 final ModelActionBuilder importAction = stmt.newInferenceAction(SOURCE_LINKAGE);
122 final String moduleName = stmt.getArgument();
123 final SemVer semanticVersion = stmt.getFromNamespace(SemanticVersionNamespace.class, stmt);
124 final SemanticVersionImport.CompatibleCriterion criterion = semanticVersion == null
125 ? new NoVerCompatibleCriterion(moduleName)
126 : new SemVerCompatibleCriterion(moduleName, semanticVersion);
128 final Prerequisite<StmtContext<?, ?, ?>> imported = importAction.requiresCtx(stmt,
129 SemanticVersionModuleNamespace.class, criterion, SOURCE_LINKAGE);
130 final Prerequisite<Mutable<?, ?, ?>> linkageTarget = importAction.mutatesCtx(stmt.getRoot(), SOURCE_LINKAGE);
132 importAction.apply(new InferenceAction() {
134 public void apply(final InferenceContext ctx) {
135 final StmtContext<?, ?, ?> importedModule = imported.resolve(ctx);
136 final SemVer importedVersion = stmt.getFromNamespace(SemanticVersionNamespace.class, stmt);
137 final SourceIdentifier importedModuleIdentifier = importedModule.getFromNamespace(
138 ModuleCtxToSourceIdentifier.class, importedModule);
139 final SemVerSourceIdentifier semVerModuleIdentifier = createSemVerModuleIdentifier(
140 importedModuleIdentifier, importedVersion);
141 stmt.addToNs(ImportedVersionNamespace.class, Empty.value(), semVerModuleIdentifier);
143 linkageTarget.resolve(ctx).addToNs(ImportedModuleContext.class, importedModuleIdentifier,
145 final String impPrefix = firstAttributeOf(stmt.declaredSubstatements(), PrefixStatement.class);
146 stmt.addToNs(ImportPrefixToModuleCtx.class, impPrefix, importedModule);
147 stmt.addToNs(ImportPrefixToSemVerSourceIdentifier.class, impPrefix, semVerModuleIdentifier);
149 final QNameModule mod = InferenceException.throwIfNull(stmt.getFromNamespace(
150 ModuleCtxToModuleQName.class, importedModule), stmt, "Failed to find module of %s", importedModule);
151 stmt.addToNs(ModuleQNameToPrefix.class, mod, impPrefix);
155 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
156 if (failed.contains(imported)) {
157 throw new InferenceException(stmt,
158 "Unable to find module compatible with requested import [%s(%s)].", moduleName,
159 getRequestedImportVersionString(stmt));
165 private static Optional<SemVer> getRequestedImportVersion(final StmtContext<?, ?, ?> stmt) {
166 return Optional.ofNullable(stmt.getFromNamespace(SemanticVersionNamespace.class, stmt));
169 private static String getRequestedImportVersionString(final StmtContext<?, ?, ?> stmt) {
170 return getRequestedImportVersion(stmt).map(SemVer::toString).orElse("<any>");
173 private static SemVerSourceIdentifier createSemVerModuleIdentifier(
174 final SourceIdentifier importedModuleIdentifier, final SemVer semVer) {
175 return SemVerSourceIdentifier.create(importedModuleIdentifier.getName(),
176 importedModuleIdentifier.getRevision(), semVer);