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.Beta;
14 import com.google.common.base.Strings;
15 import com.google.common.collect.ImmutableSet;
16 import java.io.IOException;
17 import java.util.HashSet;
18 import java.util.Objects;
19 import java.util.Optional;
21 import org.eclipse.jdt.annotation.NonNull;
22 import org.eclipse.jdt.annotation.Nullable;
23 import org.opendaylight.yangtools.concepts.SemVer;
24 import org.opendaylight.yangtools.openconfig.model.api.OpenConfigStatements;
25 import org.opendaylight.yangtools.yang.common.QName;
26 import org.opendaylight.yangtools.yang.common.Revision;
27 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
28 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
29 import org.opendaylight.yangtools.yang.model.api.stmt.ImportEffectiveStatement;
30 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
31 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
32 import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
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.IRSchemaSource;
37 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRStatement;
38 import org.opendaylight.yangtools.yang.parser.spi.source.ExplicitStatement;
39 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
42 * Helper transfer object which holds basic and dependency information for YANG
46 * There are two concrete implementations of this interface:
48 * <li>{@link ModuleDependencyInfo} - Dependency information for module</li>
49 * <li>{@link SubmoduleDependencyInfo} - Dependency information for submodule</li>
52 * @see ModuleDependencyInfo
53 * @see SubmoduleDependencyInfo
55 public abstract class YangModelDependencyInfo {
56 private static final String BELONGS_TO = YangStmtMapping.BELONGS_TO.getStatementName().getLocalName();
57 private static final String IMPORT = YangStmtMapping.IMPORT.getStatementName().getLocalName();
58 private static final String INCLUDE = YangStmtMapping.INCLUDE.getStatementName().getLocalName();
59 private static final String MODULE = YangStmtMapping.MODULE.getStatementName().getLocalName();
60 private static final String REVISION = YangStmtMapping.REVISION.getStatementName().getLocalName();
61 private static final String REVISION_DATE = YangStmtMapping.REVISION_DATE.getStatementName().getLocalName();
62 private static final String SUBMODULE = YangStmtMapping.SUBMODULE.getStatementName().getLocalName();
64 private static final String OPENCONFIG_VERSION = OpenConfigStatements.OPENCONFIG_VERSION.getStatementName()
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 revision = Revision.ofNullable(formattedRevision).orElse(null);
86 moduleImports = imports;
87 submoduleIncludes = includes;
88 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 intermediate representation root statement of a YANG model.
168 * @param source Schema source
169 * @return {@link YangModelDependencyInfo}
170 * @throws IllegalArgumentException If the root statement is not a valid YANG module/submodule
172 public static @NonNull YangModelDependencyInfo forIR(final IRSchemaSource source) {
173 return forIR(source.getRootStatement(), source.getIdentifier());
177 * Extracts {@link YangModelDependencyInfo} from an intermediate representation root statement of a YANG model.
179 * @param source Source identifier
180 * @param rootStatement root statement
181 * @return {@link YangModelDependencyInfo}
182 * @throws IllegalArgumentException If the root statement is not a valid YANG module/submodule
184 static @NonNull YangModelDependencyInfo forIR(final IRStatement rootStatement,
185 final SourceIdentifier source) {
186 final IRKeyword keyword = rootStatement.keyword();
187 checkArgument(keyword instanceof Unqualified, "Invalid root statement %s", keyword);
189 final String arg = keyword.identifier();
190 if (MODULE.equals(arg)) {
191 return parseModuleContext(rootStatement, source);
193 if (SUBMODULE.equals(arg)) {
194 return parseSubmoduleContext(rootStatement, source);
196 throw new IllegalArgumentException("Root of parsed AST must be either module or submodule");
200 * Extracts {@link YangModelDependencyInfo} from a {@link YangTextSchemaSource}. This parsing does not
201 * validate full YANG module, only parses header up to the revisions and imports.
203 * @param yangText {@link YangTextSchemaSource}
204 * @return {@link YangModelDependencyInfo}
205 * @throws YangSyntaxErrorException If the resource does not pass syntactic analysis
206 * @throws IOException When the resource cannot be read
208 public static YangModelDependencyInfo forYangText(final YangTextSchemaSource yangText)
209 throws IOException, YangSyntaxErrorException {
210 final YangStatementStreamSource source = YangStatementStreamSource.create(yangText);
211 return forIR(source.rootStatement(), source.getIdentifier());
214 private static @NonNull YangModelDependencyInfo parseModuleContext(final IRStatement module,
215 final SourceIdentifier source) {
216 final String name = safeStringArgument(source, module, "module name");
217 final String latestRevision = getLatestRevision(module, source);
218 final Optional<SemVer> semVer = Optional.ofNullable(findSemanticVersion(module, source));
219 final ImmutableSet<ModuleImport> imports = parseImports(module, source);
220 final ImmutableSet<ModuleImport> includes = parseIncludes(module, source);
222 return new ModuleDependencyInfo(name, latestRevision, imports, includes, semVer);
225 private static ImmutableSet<ModuleImport> parseImports(final IRStatement module,
226 final SourceIdentifier source) {
227 final Set<ModuleImport> result = new HashSet<>();
228 for (final IRStatement substatement : module.statements()) {
229 if (isBuiltin(substatement, IMPORT)) {
230 final String importedModuleName = safeStringArgument(source, substatement, "imported module name");
231 final String revisionDateStr = getRevisionDateString(substatement, source);
232 final Revision revisionDate = Revision.ofNullable(revisionDateStr).orElse(null);
233 final SemVer importSemVer = findSemanticVersion(substatement, source);
234 result.add(new ModuleImportImpl(importedModuleName, revisionDate, importSemVer));
237 return ImmutableSet.copyOf(result);
241 public static SemVer findSemanticVersion(final IRStatement statement, final SourceIdentifier source) {
242 String semVerString = null;
243 for (final IRStatement substatement : statement.statements()) {
244 // FIXME: this should also check we are using a prefix
245 if (OPENCONFIG_VERSION.equals(substatement.keyword().identifier())) {
246 semVerString = safeStringArgument(source, substatement, "version string");
251 return Strings.isNullOrEmpty(semVerString) ? null : SemVer.valueOf(semVerString);
254 private static boolean isBuiltin(final IRStatement stmt, final String localName) {
255 final IRKeyword keyword = stmt.keyword();
256 return keyword instanceof Unqualified && localName.equals(keyword.identifier());
259 private static ImmutableSet<ModuleImport> parseIncludes(final IRStatement module, final SourceIdentifier source) {
260 final Set<ModuleImport> result = new HashSet<>();
261 for (final IRStatement substatement : module.statements()) {
262 if (isBuiltin(substatement, INCLUDE)) {
263 final String revisionDateStr = getRevisionDateString(substatement, source);
264 final String IncludeModuleName = safeStringArgument(source, substatement, "included submodule name");
265 final Revision revisionDate = Revision.ofNullable(revisionDateStr).orElse(null);
266 result.add(new ModuleImportImpl(IncludeModuleName, revisionDate));
269 return ImmutableSet.copyOf(result);
272 private static String getRevisionDateString(final IRStatement importStatement, final SourceIdentifier source) {
273 String revisionDateStr = null;
274 for (final IRStatement substatement : importStatement.statements()) {
275 if (isBuiltin(substatement, REVISION_DATE)) {
276 revisionDateStr = safeStringArgument(source, substatement, "imported module revision-date");
279 return revisionDateStr;
282 public static String getLatestRevision(final IRStatement module, final SourceIdentifier source) {
283 String latestRevision = null;
284 for (final IRStatement substatement : module.statements()) {
285 if (isBuiltin(substatement, REVISION)) {
286 final String currentRevision = safeStringArgument(source, substatement, "revision date");
287 if (latestRevision == null || latestRevision.compareTo(currentRevision) < 0) {
288 latestRevision = currentRevision;
292 return latestRevision;
295 private static @NonNull YangModelDependencyInfo parseSubmoduleContext(final IRStatement submodule,
296 final SourceIdentifier source) {
297 final String name = safeStringArgument(source, submodule, "submodule name");
298 final String belongsTo = parseBelongsTo(submodule, source);
300 final String latestRevision = getLatestRevision(submodule, source);
301 final ImmutableSet<ModuleImport> imports = parseImports(submodule, source);
302 final ImmutableSet<ModuleImport> includes = parseIncludes(submodule, source);
304 return new SubmoduleDependencyInfo(name, latestRevision, belongsTo, imports, includes);
307 private static String parseBelongsTo(final IRStatement submodule, final SourceIdentifier source) {
308 for (final IRStatement substatement : submodule.statements()) {
309 if (isBuiltin(substatement, BELONGS_TO)) {
310 return safeStringArgument(source, substatement, "belongs-to module name");
316 static String safeStringArgument(final SourceIdentifier source, final IRStatement stmt, final String desc) {
317 final StatementSourceReference ref = getReference(source, stmt);
318 final IRArgument arg = stmt.argument();
319 checkArgument(arg != null, "Missing %s at %s", desc, ref);
320 // TODO: we probably need to understand yang version first....
321 return ArgumentContextUtils.rfc6020().stringFromStringContext(arg, ref);
324 private static StatementSourceReference getReference(final SourceIdentifier source, final IRStatement stmt) {
325 return ExplicitStatement.atPosition(source.getName(), stmt.startLine(), stmt.startColumn() + 1);
329 * Dependency information for YANG module.
331 public static final class ModuleDependencyInfo extends YangModelDependencyInfo {
332 ModuleDependencyInfo(final String name, final String latestRevision, final ImmutableSet<ModuleImport> imports,
333 final ImmutableSet<ModuleImport> includes, final Optional<SemVer> semVer) {
334 super(name, latestRevision, imports, includes, semVer);
338 public String toString() {
339 return "Module [name=" + getName() + ", revision=" + getRevision()
340 + ", semanticVersion=" + getSemanticVersion().orElse(null)
341 + ", dependencies=" + getDependencies()
347 * Dependency information for submodule, also provides name for parent module.
349 public static final class SubmoduleDependencyInfo extends YangModelDependencyInfo {
350 private final String belongsTo;
352 private SubmoduleDependencyInfo(final String name, final String latestRevision, final String belongsTo,
353 final ImmutableSet<ModuleImport> imports, final ImmutableSet<ModuleImport> includes) {
354 super(name, latestRevision, imports, includes);
355 this.belongsTo = belongsTo;
359 * Returns name of parent module.
361 * @return The module this info belongs to
363 public String getParentModule() {
368 public String toString() {
369 return "Submodule [name=" + getName() + ", revision="
370 + getRevision() + ", dependencies=" + getDependencies()
376 * Utility implementation of {@link ModuleImport} to be used by {@link YangModelDependencyInfo}.
378 // FIXME: this is a rather nasty misuse of APIs :(
379 private static final class ModuleImportImpl implements ModuleImport {
381 private final Revision revision;
382 private final SemVer semVer;
383 private final String name;
385 ModuleImportImpl(final @NonNull String moduleName, final @Nullable Revision revision) {
386 this(moduleName, revision, null);
389 ModuleImportImpl(final @NonNull String moduleName, final @Nullable Revision revision,
390 final @Nullable SemVer semVer) {
391 name = requireNonNull(moduleName, "Module name must not be null.");
392 this.revision = revision;
393 this.semVer = semVer;
397 public String getModuleName() {
402 public Optional<Revision> getRevision() {
403 return Optional.ofNullable(revision);
407 public Optional<SemVer> getSemanticVersion() {
408 return Optional.ofNullable(semVer);
412 public String getPrefix() {
417 public Optional<String> getDescription() {
418 return Optional.empty();
422 public Optional<String> getReference() {
423 return Optional.empty();
427 public ImportEffectiveStatement asEffectiveStatement() {
428 throw new UnsupportedOperationException();
432 public int hashCode() {
433 final int prime = 31;
435 result = prime * result + Objects.hashCode(name);
436 result = prime * result + Objects.hashCode(revision);
437 result = prime * result + Objects.hashCode(semVer);
442 public boolean equals(final Object obj) {
446 if (!(obj instanceof ModuleImportImpl)) {
449 final ModuleImportImpl other = (ModuleImportImpl) obj;
450 return name.equals(other.name) && Objects.equals(revision, other.revision)
451 && Objects.equals(getSemanticVersion(), other.getSemanticVersion());
455 public String toString() {
456 return "ModuleImportImpl [name=" + name + ", revision="
457 + QName.formattedRevision(Optional.ofNullable(revision)) + ", semanticVersion=" + semVer + "]";