2 * Copyright (c) 2014 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.impl.util;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.base.Strings;
14 import com.google.common.collect.ImmutableSet;
15 import java.io.IOException;
16 import java.util.HashSet;
17 import java.util.Objects;
18 import java.util.Optional;
20 import javax.annotation.Nullable;
21 import org.antlr.v4.runtime.ParserRuleContext;
22 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser.StatementContext;
23 import org.opendaylight.yangtools.concepts.SemVer;
24 import org.opendaylight.yangtools.yang.common.QName;
25 import org.opendaylight.yangtools.yang.common.Revision;
26 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
27 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
28 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
29 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
30 import org.opendaylight.yangtools.yang.parser.rfc6020.repo.YangStatementStreamSource;
31 import org.opendaylight.yangtools.yang.parser.spi.source.DeclarationInTextSource;
32 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
33 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.SupportedExtensionsMapping;
34 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.Utils;
37 * Helper transfer object which holds basic and dependency information for YANG
41 * There are two concrete implementations of this interface:
43 * <li>{@link ModuleDependencyInfo} - Dependency information for module</li>
44 * <li>{@link SubmoduleDependencyInfo} - Dependency information for submodule</li>
47 * @see ModuleDependencyInfo
48 * @see SubmoduleDependencyInfo
50 public abstract class YangModelDependencyInfo {
51 private static final String BELONGS_TO = YangStmtMapping.BELONGS_TO.getStatementName().getLocalName();
52 private static final String IMPORT = YangStmtMapping.IMPORT.getStatementName().getLocalName();
53 private static final String INCLUDE = YangStmtMapping.INCLUDE.getStatementName().getLocalName();
54 private static final String MODULE = YangStmtMapping.MODULE.getStatementName().getLocalName();
55 private static final String REVISION = YangStmtMapping.REVISION.getStatementName().getLocalName();
56 private static final String REVISION_DATE = YangStmtMapping.REVISION_DATE.getStatementName().getLocalName();
57 private static final String SUBMODULE = YangStmtMapping.SUBMODULE.getStatementName().getLocalName();
59 private static final String OPENCONFIG_VERSION = SupportedExtensionsMapping.OPENCONFIG_VERSION.getStatementName()
62 private final String name;
63 private final String formattedRevision;
64 private final Revision revision;
65 private final Optional<SemVer> semVer;
66 private final ImmutableSet<ModuleImport> submoduleIncludes;
67 private final ImmutableSet<ModuleImport> moduleImports;
68 private final ImmutableSet<ModuleImport> dependencies;
70 YangModelDependencyInfo(final String name, final String formattedRevision,
71 final ImmutableSet<ModuleImport> imports,
72 final ImmutableSet<ModuleImport> includes) {
73 this(name, formattedRevision, imports, includes, Optional.empty());
76 YangModelDependencyInfo(final String name, final String formattedRevision,
77 final ImmutableSet<ModuleImport> imports,
78 final ImmutableSet<ModuleImport> includes,
79 final Optional<SemVer> semVer) {
81 this.formattedRevision = formattedRevision;
82 this.revision = formattedRevision == null ? null : Revision.valueOf(formattedRevision);
83 this.moduleImports = imports;
84 this.submoduleIncludes = includes;
85 this.dependencies = ImmutableSet.<ModuleImport>builder()
86 .addAll(moduleImports).addAll(submoduleIncludes).build();
91 * Returns immutable collection of all module imports. This collection contains both <code>import</code> statements
92 * and <code>include</code> statements for submodules.
94 * @return Immutable collection of imports.
96 public ImmutableSet<ModuleImport> getDependencies() {
101 * Returns model name.
105 public String getName() {
110 * Returns formatted revision string.
112 * @return formatted revision string
114 public String getFormattedRevision() {
115 return formattedRevision;
123 Revision getRevision() {
128 * Returns semantic version of module.
130 * @return semantic version
132 public Optional<SemVer> getSemanticVersion() {
137 public int hashCode() {
138 final int prime = 31;
140 result = prime * result + Objects.hashCode(formattedRevision);
141 result = prime * result + Objects.hashCode(name);
142 result = prime * result + Objects.hashCode(semVer);
147 public boolean equals(final Object obj) {
154 if (!(obj instanceof YangModelDependencyInfo)) {
157 final YangModelDependencyInfo other = (YangModelDependencyInfo) obj;
158 if (formattedRevision == null) {
159 if (other.formattedRevision != null) {
162 } else if (!formattedRevision.equals(other.formattedRevision)) {
166 if (other.name != null) {
169 } else if (!name.equals(other.name)) {
172 return Objects.equals(semVer, other.semVer);
176 * Extracts {@link YangModelDependencyInfo} from an abstract syntax tree of a YANG model.
178 * @param tree Abstract syntax tree
179 * @return {@link YangModelDependencyInfo}
180 * @throws YangSyntaxErrorException If the AST is not a valid YANG module/submodule
182 public static YangModelDependencyInfo fromAST(final String name,
183 final ParserRuleContext tree) throws YangSyntaxErrorException {
185 if (tree instanceof StatementContext) {
186 final StatementContext rootStatement = (StatementContext) tree;
187 return parseAST(rootStatement, name);
190 throw new YangSyntaxErrorException(name, 0, 0, "Unknown YANG text type");
193 private static YangModelDependencyInfo parseAST(final StatementContext rootStatement, final String sourceName) {
194 final String keyWordText = rootStatement.keyword().getText();
195 if (MODULE.equals(keyWordText)) {
196 return parseModuleContext(rootStatement, sourceName);
198 if (SUBMODULE.equals(keyWordText)) {
199 return parseSubmoduleContext(rootStatement, sourceName);
201 throw new IllegalArgumentException("Root of parsed AST must be either module or submodule");
205 * Extracts {@link YangModelDependencyInfo} from input stream containing a YANG model. This parsing does not
206 * validate full YANG module, only parses header up to the revisions and imports.
208 * @param refClass Base search class
209 * @param resourceName resource name, relative to refClass
210 * @return {@link YangModelDependencyInfo}
211 * @throws YangSyntaxErrorException If the resource does not pass syntactic analysis
212 * @throws IOException When the resource cannot be read
213 * @throws IllegalArgumentException
214 * If input stream is not valid YANG stream
216 public static YangModelDependencyInfo forResource(final Class<?> refClass, final String resourceName)
217 throws IOException, YangSyntaxErrorException {
218 final YangStatementStreamSource source = YangStatementStreamSource.create(
219 YangTextSchemaSource.forResource(refClass, resourceName));
220 final ParserRuleContext ast = source.getYangAST();
221 checkArgument(ast instanceof StatementContext);
222 return parseAST((StatementContext) ast, source.getIdentifier().toYangFilename());
225 private static YangModelDependencyInfo parseModuleContext(final StatementContext module, final String sourceName) {
226 final String name = Utils.stringFromStringContext(module.argument(), getReference(sourceName, module));
227 final String latestRevision = getLatestRevision(module, sourceName);
228 final Optional<SemVer> semVer = Optional.ofNullable(findSemanticVersion(module, sourceName));
229 final ImmutableSet<ModuleImport> imports = parseImports(module, sourceName);
230 final ImmutableSet<ModuleImport> includes = parseIncludes(module, sourceName);
232 return new ModuleDependencyInfo(name, latestRevision, imports, includes, semVer);
235 private static ImmutableSet<ModuleImport> parseImports(final StatementContext module, final String sourceName) {
236 final Set<ModuleImport> result = new HashSet<>();
237 for (final StatementContext subStatementContext : module.statement()) {
238 if (IMPORT.equals(subStatementContext.keyword().getText())) {
239 final String revisionDateStr = getRevisionDateString(subStatementContext, sourceName);
240 final String importedModuleName = Utils.stringFromStringContext(subStatementContext.argument(),
241 getReference(sourceName, subStatementContext));
242 final Revision revisionDate = revisionDateStr == null ? null : Revision.valueOf(revisionDateStr);
243 final SemVer importSemVer = findSemanticVersion(subStatementContext, sourceName);
244 result.add(new ModuleImportImpl(importedModuleName, revisionDate, importSemVer));
247 return ImmutableSet.copyOf(result);
250 private static SemVer findSemanticVersion(final StatementContext statement, final String sourceName) {
251 String semVerString = null;
252 for (final StatementContext subStatement : statement.statement()) {
253 final String subStatementName = Utils.trimPrefix(subStatement.keyword().getText());
254 if (OPENCONFIG_VERSION.equals(subStatementName)) {
255 semVerString = Utils.stringFromStringContext(subStatement.argument(),
256 getReference(sourceName, subStatement));
261 return Strings.isNullOrEmpty(semVerString) ? null : SemVer.valueOf(semVerString);
264 private static ImmutableSet<ModuleImport> parseIncludes(final StatementContext module, final String sourceName) {
265 final Set<ModuleImport> result = new HashSet<>();
266 for (final StatementContext subStatementContext : module.statement()) {
267 if (INCLUDE.equals(subStatementContext.keyword().getText())) {
268 final String revisionDateStr = getRevisionDateString(subStatementContext, sourceName);
269 final String IncludeModuleName = Utils.stringFromStringContext(subStatementContext.argument(),
270 getReference(sourceName, subStatementContext));
271 final Revision revisionDate = revisionDateStr == null ? null : Revision.valueOf(revisionDateStr);
272 result.add(new ModuleImportImpl(IncludeModuleName, revisionDate));
275 return ImmutableSet.copyOf(result);
278 private static String getRevisionDateString(final StatementContext importStatement, final String sourceName) {
279 String revisionDateStr = null;
280 for (final StatementContext importSubStatement : importStatement.statement()) {
281 if (REVISION_DATE.equals(importSubStatement.keyword().getText())) {
282 revisionDateStr = Utils.stringFromStringContext(importSubStatement.argument(),
283 getReference(sourceName, importSubStatement));
286 return revisionDateStr;
289 public static String getLatestRevision(final StatementContext module, final String sourceName) {
290 String latestRevision = null;
291 for (final StatementContext subStatementContext : module.statement()) {
292 if (REVISION.equals(subStatementContext.keyword().getText())) {
293 final String currentRevision = Utils.stringFromStringContext(subStatementContext.argument(),
294 getReference(sourceName, subStatementContext));
295 if (latestRevision == null || latestRevision.compareTo(currentRevision) == -1) {
296 latestRevision = currentRevision;
300 return latestRevision;
303 private static YangModelDependencyInfo parseSubmoduleContext(final StatementContext submodule,
304 final String sourceName) {
305 final String name = Utils.stringFromStringContext(submodule.argument(), getReference(sourceName, submodule));
306 final String belongsTo = parseBelongsTo(submodule, sourceName);
308 final String latestRevision = getLatestRevision(submodule, sourceName);
309 final ImmutableSet<ModuleImport> imports = parseImports(submodule, sourceName);
310 final ImmutableSet<ModuleImport> includes = parseIncludes(submodule, sourceName);
312 return new SubmoduleDependencyInfo(name, latestRevision, belongsTo, imports, includes);
315 private static String parseBelongsTo(final StatementContext submodule, final String sourceName) {
316 for (final StatementContext subStatementContext : submodule.statement()) {
317 if (BELONGS_TO.equals(subStatementContext.keyword().getText())) {
318 return Utils.stringFromStringContext(subStatementContext.argument(),
319 getReference(sourceName, subStatementContext));
325 private static StatementSourceReference getReference(final String sourceName,
326 final StatementContext context) {
327 return DeclarationInTextSource.atPosition(sourceName, context.getStart().getLine(),
328 context.getStart().getCharPositionInLine());
332 * Dependency information for YANG module.
334 public static class ModuleDependencyInfo extends YangModelDependencyInfo {
335 private ModuleDependencyInfo(final String name, final String latestRevision,
336 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
337 super(name, latestRevision, imports, includes);
340 private ModuleDependencyInfo(final String name, final String latestRevision,
341 final ImmutableSet<ModuleImport> imports,
342 final ImmutableSet<ModuleImport> includes,
343 final Optional<SemVer> semVer) {
344 super(name, latestRevision, imports, includes, semVer);
348 public String toString() {
349 return "Module [name=" + getName() + ", revision=" + getRevision()
350 + ", semanticVersion=" + getSemanticVersion().orElse(null)
351 + ", dependencies=" + getDependencies()
357 * Dependency information for submodule, also provides name for parent module.
359 public static final class SubmoduleDependencyInfo extends YangModelDependencyInfo {
360 private final String belongsTo;
362 private SubmoduleDependencyInfo(final String name, final String latestRevision, final String belongsTo,
363 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
364 super(name, latestRevision, imports, includes);
365 this.belongsTo = belongsTo;
369 * Returns name of parent module.
371 public String getParentModule() {
376 public String toString() {
377 return "Submodule [name=" + getName() + ", revision="
378 + getRevision() + ", dependencies=" + getDependencies()
384 * Utility implementation of {@link ModuleImport} to be used by {@link YangModelDependencyInfo}.
386 private static final class ModuleImportImpl implements ModuleImport {
388 private final Revision revision;
389 private final SemVer semVer;
390 private final String name;
392 ModuleImportImpl(final String moduleName, final Revision revision) {
393 this(moduleName, revision, null);
396 ModuleImportImpl(final String moduleName, @Nullable final Revision revision, @Nullable final SemVer semVer) {
397 this.name = requireNonNull(moduleName, "Module name must not be null.");
398 this.revision = revision;
399 this.semVer = semVer;
403 public String getModuleName() {
408 public Optional<Revision> getRevision() {
409 return Optional.ofNullable(revision);
413 public Optional<SemVer> getSemanticVersion() {
414 return Optional.ofNullable(semVer);
418 public String getPrefix() {
423 public int hashCode() {
424 final int prime = 31;
426 result = prime * result + Objects.hashCode(name);
427 result = prime * result + Objects.hashCode(revision);
428 result = prime * result + Objects.hashCode(semVer);
433 public boolean equals(final Object obj) {
440 if (getClass() != obj.getClass()) {
443 final ModuleImportImpl other = (ModuleImportImpl) obj;
445 if (other.name != null) {
448 } else if (!name.equals(other.name)) {
451 if (revision == null) {
452 if (other.revision != null) {
455 } else if (!revision.equals(other.revision)) {
459 if (!Objects.equals(getSemanticVersion(), other.getSemanticVersion())) {
466 public String toString() {
467 return "ModuleImportImpl [name=" + name + ", revision="
468 + QName.formattedRevision(Optional.ofNullable(revision)) + ", semanticVersion=" + semVer + "]";