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.rfc7950.repo;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.VisibleForTesting;
14 import com.google.common.base.Splitter;
15 import com.google.common.base.Strings;
16 import com.google.common.collect.ImmutableSet;
17 import java.io.IOException;
18 import java.util.HashSet;
19 import java.util.Objects;
20 import java.util.Optional;
22 import org.eclipse.jdt.annotation.NonNull;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.opendaylight.yangtools.concepts.SemVer;
25 import org.opendaylight.yangtools.openconfig.model.api.OpenConfigStatements;
26 import org.opendaylight.yangtools.yang.common.QName;
27 import org.opendaylight.yangtools.yang.common.Revision;
28 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
29 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
30 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
31 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
32 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
33 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRArgument;
34 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRKeyword;
35 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRKeyword.Unqualified;
36 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRStatement;
37 import org.opendaylight.yangtools.yang.parser.spi.source.DeclarationInTextSource;
38 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
41 * Helper transfer object which holds basic and dependency information for YANG
45 * There are two concrete implementations of this interface:
47 * <li>{@link ModuleDependencyInfo} - Dependency information for module</li>
48 * <li>{@link SubmoduleDependencyInfo} - Dependency information for submodule</li>
51 * @see ModuleDependencyInfo
52 * @see SubmoduleDependencyInfo
54 public abstract class YangModelDependencyInfo {
55 private static final String BELONGS_TO = YangStmtMapping.BELONGS_TO.getStatementName().getLocalName();
56 private static final String IMPORT = YangStmtMapping.IMPORT.getStatementName().getLocalName();
57 private static final String INCLUDE = YangStmtMapping.INCLUDE.getStatementName().getLocalName();
58 private static final String MODULE = YangStmtMapping.MODULE.getStatementName().getLocalName();
59 private static final String REVISION = YangStmtMapping.REVISION.getStatementName().getLocalName();
60 private static final String REVISION_DATE = YangStmtMapping.REVISION_DATE.getStatementName().getLocalName();
61 private static final String SUBMODULE = YangStmtMapping.SUBMODULE.getStatementName().getLocalName();
63 private static final String OPENCONFIG_VERSION = OpenConfigStatements.OPENCONFIG_VERSION.getStatementName()
65 private static final Splitter COLON_SPLITTER = Splitter.on(":").omitEmptyStrings().trimResults();
67 private final String name;
68 private final Revision revision;
69 private final SemVer semVer;
70 private final ImmutableSet<ModuleImport> submoduleIncludes;
71 private final ImmutableSet<ModuleImport> moduleImports;
72 private final ImmutableSet<ModuleImport> dependencies;
74 YangModelDependencyInfo(final String name, final String formattedRevision,
75 final ImmutableSet<ModuleImport> imports,
76 final ImmutableSet<ModuleImport> includes) {
77 this(name, formattedRevision, imports, includes, Optional.empty());
80 YangModelDependencyInfo(final String name, final String formattedRevision,
81 final ImmutableSet<ModuleImport> imports,
82 final ImmutableSet<ModuleImport> includes,
83 final Optional<SemVer> semVer) {
85 this.revision = Revision.ofNullable(formattedRevision).orElse(null);
86 this.moduleImports = imports;
87 this.submoduleIncludes = includes;
88 this.dependencies = ImmutableSet.<ModuleImport>builder()
89 .addAll(moduleImports).addAll(submoduleIncludes).build();
90 this.semVer = semVer.orElse(null);
94 * Returns immutable collection of all module imports. This collection contains both <code>import</code> statements
95 * and <code>include</code> statements for submodules.
97 * @return Immutable collection of imports.
99 public ImmutableSet<ModuleImport> getDependencies() {
104 * Returns model name.
108 public String getName() {
113 * Returns formatted revision string.
115 * @return formatted revision string
117 public String getFormattedRevision() {
118 return revision != null ? revision.toString() : null;
124 * @return revision, potentially null
126 public Optional<Revision> getRevision() {
127 return Optional.ofNullable(revision);
131 * Returns semantic version of module.
133 * @return semantic version
135 public Optional<SemVer> getSemanticVersion() {
136 return Optional.ofNullable(semVer);
140 public int hashCode() {
141 final int prime = 31;
143 result = prime * result + Objects.hashCode(name);
144 result = prime * result + Objects.hashCode(revision);
145 result = prime * result + Objects.hashCode(semVer);
150 public boolean equals(final Object obj) {
157 if (!(obj instanceof YangModelDependencyInfo)) {
160 final YangModelDependencyInfo other = (YangModelDependencyInfo) obj;
161 return Objects.equals(name, other.name) && Objects.equals(revision, other.revision)
162 && Objects.equals(semVer, other.semVer);
166 * Extracts {@link YangModelDependencyInfo} from an abstract syntax tree of a YANG model.
168 * @param source Source identifier
169 * @param rootStatement root statement
170 * @return {@link YangModelDependencyInfo}
171 * @throws IllegalArgumentException If the AST is not a valid YANG module/submodule
173 static @NonNull YangModelDependencyInfo parseAST(final IRStatement rootStatement,
174 final SourceIdentifier source) {
175 final IRKeyword keyword = rootStatement.keyword();
176 checkArgument(keyword instanceof Unqualified, "Invalid root statement %s", keyword);
178 final String arg = keyword.identifier();
179 if (MODULE.equals(arg)) {
180 return parseModuleContext(rootStatement, source);
182 if (SUBMODULE.equals(arg)) {
183 return parseSubmoduleContext(rootStatement, source);
185 throw new IllegalArgumentException("Root of parsed AST must be either module or submodule");
189 * Extracts {@link YangModelDependencyInfo} from input stream containing a YANG model. This parsing does not
190 * validate full YANG module, only parses header up to the revisions and imports.
192 * @param refClass Base search class
193 * @param resourceName resource name, relative to refClass
194 * @return {@link YangModelDependencyInfo}
195 * @throws YangSyntaxErrorException If the resource does not pass syntactic analysis
196 * @throws IOException When the resource cannot be read
197 * @throws IllegalArgumentException
198 * 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 return parseAST(source.rootStatement(), source.getIdentifier());
208 private static @NonNull YangModelDependencyInfo parseModuleContext(final IRStatement module,
209 final SourceIdentifier source) {
210 final String name = safeStringArgument(source, module, "module name");
211 final String latestRevision = getLatestRevision(module, source);
212 final Optional<SemVer> semVer = Optional.ofNullable(findSemanticVersion(module, source));
213 final ImmutableSet<ModuleImport> imports = parseImports(module, source);
214 final ImmutableSet<ModuleImport> includes = parseIncludes(module, source);
216 return new ModuleDependencyInfo(name, latestRevision, imports, includes, semVer);
219 private static ImmutableSet<ModuleImport> parseImports(final IRStatement module,
220 final SourceIdentifier source) {
221 final Set<ModuleImport> result = new HashSet<>();
222 for (final IRStatement substatement : module.statements()) {
223 if (isBuiltin(substatement, IMPORT)) {
224 final String importedModuleName = safeStringArgument(source, substatement, "imported module name");
225 final String revisionDateStr = getRevisionDateString(substatement, source);
226 final Revision revisionDate = Revision.ofNullable(revisionDateStr).orElse(null);
227 final SemVer importSemVer = findSemanticVersion(substatement, source);
228 result.add(new ModuleImportImpl(importedModuleName, revisionDate, importSemVer));
231 return ImmutableSet.copyOf(result);
234 private static SemVer findSemanticVersion(final IRStatement statement, final SourceIdentifier source) {
235 String semVerString = null;
236 for (final IRStatement substatement : statement.statements()) {
237 // FIXME: this should also check we are using a prefix
238 if (OPENCONFIG_VERSION.equals(substatement.keyword().identifier())) {
239 semVerString = safeStringArgument(source, substatement, "version string");
244 return Strings.isNullOrEmpty(semVerString) ? null : SemVer.valueOf(semVerString);
247 private static boolean isBuiltin(final IRStatement stmt, final String localName) {
248 final IRKeyword keyword = stmt.keyword();
249 return keyword instanceof Unqualified && localName.equals(keyword.identifier());
252 private static ImmutableSet<ModuleImport> parseIncludes(final IRStatement module, final SourceIdentifier source) {
253 final Set<ModuleImport> result = new HashSet<>();
254 for (final IRStatement substatement : module.statements()) {
255 if (isBuiltin(substatement, INCLUDE)) {
256 final String revisionDateStr = getRevisionDateString(substatement, source);
257 final String IncludeModuleName = safeStringArgument(source, substatement, "included submodule name");
258 final Revision revisionDate = Revision.ofNullable(revisionDateStr).orElse(null);
259 result.add(new ModuleImportImpl(IncludeModuleName, revisionDate));
262 return ImmutableSet.copyOf(result);
265 private static String getRevisionDateString(final IRStatement importStatement, final SourceIdentifier source) {
266 String revisionDateStr = null;
267 for (final IRStatement substatement : importStatement.statements()) {
268 if (isBuiltin(substatement, REVISION_DATE)) {
269 revisionDateStr = safeStringArgument(source, substatement, "imported module revision-date");
272 return revisionDateStr;
275 public static String getLatestRevision(final IRStatement module, final SourceIdentifier source) {
276 String latestRevision = null;
277 for (final IRStatement substatement : module.statements()) {
278 if (isBuiltin(substatement, REVISION)) {
279 final String currentRevision = safeStringArgument(source, substatement, "revision date");
280 if (latestRevision == null || latestRevision.compareTo(currentRevision) < 0) {
281 latestRevision = currentRevision;
285 return latestRevision;
288 private static @NonNull YangModelDependencyInfo parseSubmoduleContext(final IRStatement submodule,
289 final SourceIdentifier source) {
290 final String name = safeStringArgument(source, submodule, "submodule name");
291 final String belongsTo = parseBelongsTo(submodule, source);
293 final String latestRevision = getLatestRevision(submodule, source);
294 final ImmutableSet<ModuleImport> imports = parseImports(submodule, source);
295 final ImmutableSet<ModuleImport> includes = parseIncludes(submodule, source);
297 return new SubmoduleDependencyInfo(name, latestRevision, belongsTo, imports, includes);
300 private static String parseBelongsTo(final IRStatement submodule, final SourceIdentifier source) {
301 for (final IRStatement substatement : submodule.statements()) {
302 if (isBuiltin(substatement, BELONGS_TO)) {
303 return safeStringArgument(source, substatement, "belongs-to module name");
309 private static String safeStringArgument(final SourceIdentifier source, final IRStatement stmt, final String desc) {
310 final StatementSourceReference ref = getReference(source, stmt);
311 final IRArgument arg = stmt.argument();
312 checkArgument(arg != null, "Missing %s at %s", desc, ref);
313 // TODO: we probably need to understand yang version first....
314 return ArgumentContextUtils.rfc6020().stringFromStringContext(arg, ref);
317 private static StatementSourceReference getReference(final SourceIdentifier source, final IRStatement stmt) {
318 return DeclarationInTextSource.atPosition(source.getName(), stmt.startLine(), stmt.startColumn());
322 * Dependency information for YANG module.
324 public static final class ModuleDependencyInfo extends YangModelDependencyInfo {
325 ModuleDependencyInfo(final String name, final String latestRevision, final ImmutableSet<ModuleImport> imports,
326 final ImmutableSet<ModuleImport> includes, final Optional<SemVer> semVer) {
327 super(name, latestRevision, imports, includes, semVer);
331 public String toString() {
332 return "Module [name=" + getName() + ", revision=" + getRevision()
333 + ", semanticVersion=" + getSemanticVersion().orElse(null)
334 + ", dependencies=" + getDependencies()
340 * Dependency information for submodule, also provides name for parent module.
342 public static final class SubmoduleDependencyInfo extends YangModelDependencyInfo {
343 private final String belongsTo;
345 private SubmoduleDependencyInfo(final String name, final String latestRevision, final String belongsTo,
346 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
347 super(name, latestRevision, imports, includes);
348 this.belongsTo = belongsTo;
352 * Returns name of parent module.
354 public String getParentModule() {
359 public String toString() {
360 return "Submodule [name=" + getName() + ", revision="
361 + getRevision() + ", dependencies=" + getDependencies()
367 * Utility implementation of {@link ModuleImport} to be used by {@link YangModelDependencyInfo}.
369 private static final class ModuleImportImpl implements ModuleImport {
371 private final Revision revision;
372 private final SemVer semVer;
373 private final String name;
375 ModuleImportImpl(final @NonNull String moduleName, final @Nullable Revision revision) {
376 this(moduleName, revision, null);
379 ModuleImportImpl(final @NonNull String moduleName, final @Nullable Revision revision,
380 final @Nullable SemVer semVer) {
381 this.name = requireNonNull(moduleName, "Module name must not be null.");
382 this.revision = revision;
383 this.semVer = semVer;
387 public String getModuleName() {
392 public Optional<Revision> getRevision() {
393 return Optional.ofNullable(revision);
397 public Optional<SemVer> getSemanticVersion() {
398 return Optional.ofNullable(semVer);
402 public String getPrefix() {
407 public Optional<String> getDescription() {
408 return Optional.empty();
412 public Optional<String> getReference() {
413 return Optional.empty();
417 public int hashCode() {
418 final int prime = 31;
420 result = prime * result + Objects.hashCode(name);
421 result = prime * result + Objects.hashCode(revision);
422 result = prime * result + Objects.hashCode(semVer);
427 public boolean equals(final Object obj) {
431 if (!(obj instanceof ModuleImportImpl)) {
434 final ModuleImportImpl other = (ModuleImportImpl) obj;
435 return name.equals(other.name) && Objects.equals(revision, other.revision)
436 && Objects.equals(getSemanticVersion(), other.getSemanticVersion());
440 public String toString() {
441 return "ModuleImportImpl [name=" + name + ", revision="
442 + QName.formattedRevision(Optional.ofNullable(revision)) + ", semanticVersion=" + semVer + "]";