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 Revision revision;
64 private final SemVer semVer;
65 private final ImmutableSet<ModuleImport> submoduleIncludes;
66 private final ImmutableSet<ModuleImport> moduleImports;
67 private final ImmutableSet<ModuleImport> dependencies;
69 YangModelDependencyInfo(final String name, final String formattedRevision,
70 final ImmutableSet<ModuleImport> imports,
71 final ImmutableSet<ModuleImport> includes) {
72 this(name, formattedRevision, imports, includes, Optional.empty());
75 YangModelDependencyInfo(final String name, final String formattedRevision,
76 final ImmutableSet<ModuleImport> imports,
77 final ImmutableSet<ModuleImport> includes,
78 final Optional<SemVer> semVer) {
80 this.revision = formattedRevision == null ? null : Revision.valueOf(formattedRevision);
81 this.moduleImports = imports;
82 this.submoduleIncludes = includes;
83 this.dependencies = ImmutableSet.<ModuleImport>builder()
84 .addAll(moduleImports).addAll(submoduleIncludes).build();
85 this.semVer = semVer.orElse(null);
89 * Returns immutable collection of all module imports. This collection contains both <code>import</code> statements
90 * and <code>include</code> statements for submodules.
92 * @return Immutable collection of imports.
94 public ImmutableSet<ModuleImport> getDependencies() {
103 public String getName() {
108 * Returns formatted revision string.
110 * @return formatted revision string
112 public String getFormattedRevision() {
113 return revision != null ? revision.toString() : null;
119 * @return revision, potentially null
121 public Optional<Revision> getRevision() {
122 return Optional.ofNullable(revision);
126 * Returns semantic version of module.
128 * @return semantic version
130 public Optional<SemVer> getSemanticVersion() {
131 return Optional.ofNullable(semVer);
135 public int hashCode() {
136 final int prime = 31;
138 result = prime * result + Objects.hashCode(name);
139 result = prime * result + Objects.hashCode(revision);
140 result = prime * result + Objects.hashCode(semVer);
145 public boolean equals(final Object obj) {
152 if (!(obj instanceof YangModelDependencyInfo)) {
155 final YangModelDependencyInfo other = (YangModelDependencyInfo) obj;
156 return Objects.equals(name, other.name) && Objects.equals(revision, other.revision)
157 && Objects.equals(semVer, other.semVer);
161 * Extracts {@link YangModelDependencyInfo} from an abstract syntax tree of a YANG model.
163 * @param tree Abstract syntax tree
164 * @return {@link YangModelDependencyInfo}
165 * @throws YangSyntaxErrorException If the AST is not a valid YANG module/submodule
167 public static YangModelDependencyInfo fromAST(final String name,
168 final ParserRuleContext tree) throws YangSyntaxErrorException {
170 if (tree instanceof StatementContext) {
171 final StatementContext rootStatement = (StatementContext) tree;
172 return parseAST(rootStatement, name);
175 throw new YangSyntaxErrorException(name, 0, 0, "Unknown YANG text type");
178 private static YangModelDependencyInfo parseAST(final StatementContext rootStatement, final String sourceName) {
179 final String keyWordText = rootStatement.keyword().getText();
180 if (MODULE.equals(keyWordText)) {
181 return parseModuleContext(rootStatement, sourceName);
183 if (SUBMODULE.equals(keyWordText)) {
184 return parseSubmoduleContext(rootStatement, sourceName);
186 throw new IllegalArgumentException("Root of parsed AST must be either module or submodule");
190 * Extracts {@link YangModelDependencyInfo} from input stream containing a YANG model. This parsing does not
191 * validate full YANG module, only parses header up to the revisions and imports.
193 * @param refClass Base search class
194 * @param resourceName resource name, relative to refClass
195 * @return {@link YangModelDependencyInfo}
196 * @throws YangSyntaxErrorException If the resource does not pass syntactic analysis
197 * @throws IOException When the resource cannot be read
198 * @throws IllegalArgumentException
199 * If input stream is not valid YANG stream
201 public static YangModelDependencyInfo forResource(final Class<?> refClass, final String resourceName)
202 throws IOException, YangSyntaxErrorException {
203 final YangStatementStreamSource source = YangStatementStreamSource.create(
204 YangTextSchemaSource.forResource(refClass, resourceName));
205 final ParserRuleContext ast = source.getYangAST();
206 checkArgument(ast instanceof StatementContext);
207 return parseAST((StatementContext) ast, source.getIdentifier().toYangFilename());
210 private static YangModelDependencyInfo parseModuleContext(final StatementContext module, final String sourceName) {
211 final String name = Utils.stringFromStringContext(module.argument(), getReference(sourceName, module));
212 final String latestRevision = getLatestRevision(module, sourceName);
213 final Optional<SemVer> semVer = Optional.ofNullable(findSemanticVersion(module, sourceName));
214 final ImmutableSet<ModuleImport> imports = parseImports(module, sourceName);
215 final ImmutableSet<ModuleImport> includes = parseIncludes(module, sourceName);
217 return new ModuleDependencyInfo(name, latestRevision, imports, includes, semVer);
220 private static ImmutableSet<ModuleImport> parseImports(final StatementContext module, final String sourceName) {
221 final Set<ModuleImport> result = new HashSet<>();
222 for (final StatementContext subStatementContext : module.statement()) {
223 if (IMPORT.equals(subStatementContext.keyword().getText())) {
224 final String revisionDateStr = getRevisionDateString(subStatementContext, sourceName);
225 final String importedModuleName = Utils.stringFromStringContext(subStatementContext.argument(),
226 getReference(sourceName, subStatementContext));
227 final Revision revisionDate = revisionDateStr == null ? null : Revision.valueOf(revisionDateStr);
228 final SemVer importSemVer = findSemanticVersion(subStatementContext, sourceName);
229 result.add(new ModuleImportImpl(importedModuleName, revisionDate, importSemVer));
232 return ImmutableSet.copyOf(result);
235 private static SemVer findSemanticVersion(final StatementContext statement, final String sourceName) {
236 String semVerString = null;
237 for (final StatementContext subStatement : statement.statement()) {
238 final String subStatementName = Utils.trimPrefix(subStatement.keyword().getText());
239 if (OPENCONFIG_VERSION.equals(subStatementName)) {
240 semVerString = Utils.stringFromStringContext(subStatement.argument(),
241 getReference(sourceName, subStatement));
246 return Strings.isNullOrEmpty(semVerString) ? null : SemVer.valueOf(semVerString);
249 private static ImmutableSet<ModuleImport> parseIncludes(final StatementContext module, final String sourceName) {
250 final Set<ModuleImport> result = new HashSet<>();
251 for (final StatementContext subStatementContext : module.statement()) {
252 if (INCLUDE.equals(subStatementContext.keyword().getText())) {
253 final String revisionDateStr = getRevisionDateString(subStatementContext, sourceName);
254 final String IncludeModuleName = Utils.stringFromStringContext(subStatementContext.argument(),
255 getReference(sourceName, subStatementContext));
256 final Revision revisionDate = revisionDateStr == null ? null : Revision.valueOf(revisionDateStr);
257 result.add(new ModuleImportImpl(IncludeModuleName, revisionDate));
260 return ImmutableSet.copyOf(result);
263 private static String getRevisionDateString(final StatementContext importStatement, final String sourceName) {
264 String revisionDateStr = null;
265 for (final StatementContext importSubStatement : importStatement.statement()) {
266 if (REVISION_DATE.equals(importSubStatement.keyword().getText())) {
267 revisionDateStr = Utils.stringFromStringContext(importSubStatement.argument(),
268 getReference(sourceName, importSubStatement));
271 return revisionDateStr;
274 public static String getLatestRevision(final StatementContext module, final String sourceName) {
275 String latestRevision = null;
276 for (final StatementContext subStatementContext : module.statement()) {
277 if (REVISION.equals(subStatementContext.keyword().getText())) {
278 final String currentRevision = Utils.stringFromStringContext(subStatementContext.argument(),
279 getReference(sourceName, subStatementContext));
280 if (latestRevision == null || latestRevision.compareTo(currentRevision) == -1) {
281 latestRevision = currentRevision;
285 return latestRevision;
288 private static YangModelDependencyInfo parseSubmoduleContext(final StatementContext submodule,
289 final String sourceName) {
290 final String name = Utils.stringFromStringContext(submodule.argument(), getReference(sourceName, submodule));
291 final String belongsTo = parseBelongsTo(submodule, sourceName);
293 final String latestRevision = getLatestRevision(submodule, sourceName);
294 final ImmutableSet<ModuleImport> imports = parseImports(submodule, sourceName);
295 final ImmutableSet<ModuleImport> includes = parseIncludes(submodule, sourceName);
297 return new SubmoduleDependencyInfo(name, latestRevision, belongsTo, imports, includes);
300 private static String parseBelongsTo(final StatementContext submodule, final String sourceName) {
301 for (final StatementContext subStatementContext : submodule.statement()) {
302 if (BELONGS_TO.equals(subStatementContext.keyword().getText())) {
303 return Utils.stringFromStringContext(subStatementContext.argument(),
304 getReference(sourceName, subStatementContext));
310 private static StatementSourceReference getReference(final String sourceName,
311 final StatementContext context) {
312 return DeclarationInTextSource.atPosition(sourceName, context.getStart().getLine(),
313 context.getStart().getCharPositionInLine());
317 * Dependency information for YANG module.
319 public static class ModuleDependencyInfo extends YangModelDependencyInfo {
320 private ModuleDependencyInfo(final String name, final String latestRevision,
321 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
322 super(name, latestRevision, imports, includes);
325 private ModuleDependencyInfo(final String name, final String latestRevision,
326 final ImmutableSet<ModuleImport> imports,
327 final ImmutableSet<ModuleImport> includes,
328 final Optional<SemVer> semVer) {
329 super(name, latestRevision, imports, includes, semVer);
333 public String toString() {
334 return "Module [name=" + getName() + ", revision=" + getRevision()
335 + ", semanticVersion=" + getSemanticVersion().orElse(null)
336 + ", dependencies=" + getDependencies()
342 * Dependency information for submodule, also provides name for parent module.
344 public static final class SubmoduleDependencyInfo extends YangModelDependencyInfo {
345 private final String belongsTo;
347 private SubmoduleDependencyInfo(final String name, final String latestRevision, final String belongsTo,
348 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
349 super(name, latestRevision, imports, includes);
350 this.belongsTo = belongsTo;
354 * Returns name of parent module.
356 public String getParentModule() {
361 public String toString() {
362 return "Submodule [name=" + getName() + ", revision="
363 + getRevision() + ", dependencies=" + getDependencies()
369 * Utility implementation of {@link ModuleImport} to be used by {@link YangModelDependencyInfo}.
371 private static final class ModuleImportImpl implements ModuleImport {
373 private final Revision revision;
374 private final SemVer semVer;
375 private final String name;
377 ModuleImportImpl(final String moduleName, final Revision revision) {
378 this(moduleName, revision, null);
381 ModuleImportImpl(final String moduleName, @Nullable final Revision revision, @Nullable final SemVer semVer) {
382 this.name = requireNonNull(moduleName, "Module name must not be null.");
383 this.revision = revision;
384 this.semVer = semVer;
388 public String getModuleName() {
393 public Optional<Revision> getRevision() {
394 return Optional.ofNullable(revision);
398 public Optional<SemVer> getSemanticVersion() {
399 return Optional.ofNullable(semVer);
403 public String getPrefix() {
408 public int hashCode() {
409 final int prime = 31;
411 result = prime * result + Objects.hashCode(name);
412 result = prime * result + Objects.hashCode(revision);
413 result = prime * result + Objects.hashCode(semVer);
418 public boolean equals(final Object obj) {
425 if (getClass() != obj.getClass()) {
428 final ModuleImportImpl other = (ModuleImportImpl) obj;
430 if (other.name != null) {
433 } else if (!name.equals(other.name)) {
436 if (revision == null) {
437 if (other.revision != null) {
440 } else if (!revision.equals(other.revision)) {
444 if (!Objects.equals(getSemanticVersion(), other.getSemanticVersion())) {
451 public String toString() {
452 return "ModuleImportImpl [name=" + name + ", revision="
453 + QName.formattedRevision(Optional.ofNullable(revision)) + ", semanticVersion=" + semVer + "]";