2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
3 * This program and the accompanying materials are made available under the
4 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
5 * and is available at http://www.eclipse.org/legal/epl-v10.html
7 package org.opendaylight.yangtools.yang.parser.impl;
9 import static com.google.common.base.Preconditions.checkNotNull;
10 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.fillAugmentTarget;
11 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.findBaseIdentity;
12 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.findModuleFromBuilders;
13 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.findModuleFromContext;
14 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.findSchemaNode;
15 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.findSchemaNodeInModule;
16 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.processAugmentation;
17 import static org.opendaylight.yangtools.yang.parser.builder.impl.TypeUtils.resolveType;
18 import static org.opendaylight.yangtools.yang.parser.builder.impl.TypeUtils.resolveTypeUnion;
20 import com.google.common.base.Optional;
21 import com.google.common.base.Preconditions;
22 import com.google.common.base.Splitter;
23 import com.google.common.collect.HashBiMap;
24 import com.google.common.io.ByteSource;
26 import java.io.IOException;
27 import java.io.InputStream;
28 import java.util.ArrayList;
29 import java.util.Collection;
30 import java.util.Collections;
31 import java.util.Date;
32 import java.util.HashMap;
33 import java.util.HashSet;
34 import java.util.LinkedHashMap;
35 import java.util.LinkedHashSet;
36 import java.util.List;
39 import java.util.TreeMap;
40 import javax.annotation.concurrent.Immutable;
41 import org.antlr.v4.runtime.ANTLRInputStream;
42 import org.antlr.v4.runtime.CommonTokenStream;
43 import org.antlr.v4.runtime.tree.ParseTree;
44 import org.antlr.v4.runtime.tree.ParseTreeWalker;
45 import org.opendaylight.yangtools.antlrv4.code.gen.YangLexer;
46 import org.opendaylight.yangtools.antlrv4.code.gen.YangParser;
47 import org.opendaylight.yangtools.antlrv4.code.gen.YangParser.YangContext;
48 import org.opendaylight.yangtools.yang.common.QName;
49 import org.opendaylight.yangtools.yang.common.QNameModule;
50 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
51 import org.opendaylight.yangtools.yang.model.api.Module;
52 import org.opendaylight.yangtools.yang.model.api.ModuleIdentifier;
53 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
54 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
55 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
56 import org.opendaylight.yangtools.yang.model.parser.api.YangContextParser;
57 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
58 import org.opendaylight.yangtools.yang.parser.builder.api.AugmentationSchemaBuilder;
59 import org.opendaylight.yangtools.yang.parser.builder.api.AugmentationTargetBuilder;
60 import org.opendaylight.yangtools.yang.parser.builder.api.Builder;
61 import org.opendaylight.yangtools.yang.parser.builder.api.DataNodeContainerBuilder;
62 import org.opendaylight.yangtools.yang.parser.builder.api.DataSchemaNodeBuilder;
63 import org.opendaylight.yangtools.yang.parser.builder.api.ExtensionBuilder;
64 import org.opendaylight.yangtools.yang.parser.builder.api.GroupingBuilder;
65 import org.opendaylight.yangtools.yang.parser.builder.api.SchemaNodeBuilder;
66 import org.opendaylight.yangtools.yang.parser.builder.api.TypeAwareBuilder;
67 import org.opendaylight.yangtools.yang.parser.builder.api.UnknownSchemaNodeBuilder;
68 import org.opendaylight.yangtools.yang.parser.builder.api.UsesNodeBuilder;
69 import org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils;
70 import org.opendaylight.yangtools.yang.parser.builder.impl.ChoiceBuilder;
71 import org.opendaylight.yangtools.yang.parser.builder.impl.ChoiceCaseBuilder;
72 import org.opendaylight.yangtools.yang.parser.builder.impl.DeviationBuilder;
73 import org.opendaylight.yangtools.yang.parser.builder.impl.GroupingUtils;
74 import org.opendaylight.yangtools.yang.parser.builder.impl.IdentitySchemaNodeBuilder;
75 import org.opendaylight.yangtools.yang.parser.builder.impl.IdentityrefTypeBuilder;
76 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleBuilder;
77 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleImpl;
78 import org.opendaylight.yangtools.yang.parser.builder.impl.UnionTypeBuilder;
79 import org.opendaylight.yangtools.yang.parser.builder.util.Comparators;
80 import org.opendaylight.yangtools.yang.parser.util.ModuleDependencySort;
81 import org.opendaylight.yangtools.yang.parser.util.NamedByteArrayInputStream;
82 import org.opendaylight.yangtools.yang.parser.util.NamedFileInputStream;
83 import org.opendaylight.yangtools.yang.parser.util.NamedInputStream;
84 import org.opendaylight.yangtools.yang.parser.util.YangParseException;
85 import org.slf4j.Logger;
86 import org.slf4j.LoggerFactory;
89 public final class YangParserImpl implements YangContextParser {
90 private static final Logger LOG = LoggerFactory.getLogger(YangParserImpl.class);
91 private static final String FAIL_DEVIATION_TARGET = "Failed to find deviation target.";
92 private static final Splitter COLON_SPLITTER = Splitter.on(':');
93 private static final YangParserImpl INSTANCE = new YangParserImpl();
95 public static YangParserImpl getInstance() {
101 public Set<Module> parseYangModels(final File yangFile, final File directory) {
103 return parseFile(yangFile, directory).getModules();
104 } catch (IOException | YangSyntaxErrorException e) {
105 throw new YangParseException("Failed to parse yang data", e);
110 public SchemaContext parseFile(final File yangFile, final File directory) throws IOException,
111 YangSyntaxErrorException {
112 Preconditions.checkState(yangFile.exists(), yangFile + " does not exists");
113 Preconditions.checkState(directory.exists(), directory + " does not exists");
114 Preconditions.checkState(directory.isDirectory(), directory + " is not a directory");
116 final String yangFileName = yangFile.getName();
117 final String[] fileList = checkNotNull(directory.list(), directory + " not found or is not a directory");
119 Map<ByteSource, File> sourceToFile = new LinkedHashMap<>();
120 ByteSource mainFileSource = BuilderUtils.fileToByteSource(yangFile);
121 sourceToFile.put(mainFileSource, yangFile);
123 for (String fileName : fileList) {
124 if (fileName.equals(yangFileName)) {
127 File dependency = new File(directory, fileName);
128 if (dependency.isFile()) {
129 sourceToFile.put(BuilderUtils.fileToByteSource(dependency), dependency);
133 Map<ByteSource, ModuleBuilder> sourceToBuilder = parseSourcesToBuilders(sourceToFile.keySet());
134 ModuleBuilder main = sourceToBuilder.get(mainFileSource);
136 List<ModuleBuilder> moduleBuilders = new ArrayList<>();
137 moduleBuilders.add(main);
138 filterImports(main, new ArrayList<>(sourceToBuilder.values()), moduleBuilders);
139 Collection<ModuleBuilder> resolved = resolveSubmodules(moduleBuilders);
141 // module builders sorted by dependencies
142 List<ModuleBuilder> sortedBuilders = ModuleDependencySort.sort(resolved);
143 LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sortedBuilders, null);
144 Collection<Module> unsorted = build(modules).values();
145 Set<Module> result = new LinkedHashSet<>(
146 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
147 return resolveSchemaContext(result);
152 public Set<Module> parseYangModels(final List<File> yangFiles) {
153 return parseFiles(yangFiles).getModules();
157 public SchemaContext parseFiles(final Collection<File> yangFiles) {
158 Collection<Module> unsorted = parseYangModelsMapped(yangFiles).values();
159 Set<Module> sorted = new LinkedHashSet<>(
160 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
161 return resolveSchemaContext(sorted);
166 public Set<Module> parseYangModels(final List<File> yangFiles, final SchemaContext context) {
168 return parseFiles(yangFiles, context).getModules();
169 } catch (IOException | YangSyntaxErrorException e) {
170 throw new YangParseException("Failed to parse yang data", e);
175 public SchemaContext parseFiles(final Collection<File> yangFiles, final SchemaContext context) throws IOException,
176 YangSyntaxErrorException {
177 if (yangFiles == null) {
178 return resolveSchemaContext(Collections.<Module> emptySet());
181 Collection<ByteSource> sources = BuilderUtils.filesToByteSources(yangFiles);
182 return parseSources(sources, context);
187 public Set<Module> parseYangModelsFromStreams(final List<InputStream> yangModelStreams) {
189 Collection<ByteSource> sources = BuilderUtils.streamsToByteSources(yangModelStreams);
190 return parseSources(sources).getModules();
191 } catch (IOException | YangSyntaxErrorException e) {
192 throw new YangParseException("Failed to parse yang data", e);
197 public SchemaContext parseSources(final Collection<ByteSource> sources) throws IOException,
198 YangSyntaxErrorException {
199 Collection<Module> unsorted = parseYangModelSources(sources).values();
200 Set<Module> sorted = new LinkedHashSet<>(
201 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
202 return resolveSchemaContext(sorted);
207 public Set<Module> parseYangModelsFromStreams(final List<InputStream> yangModelStreams, final SchemaContext context) {
209 Collection<ByteSource> sources = BuilderUtils.streamsToByteSources(yangModelStreams);
210 return parseSources(sources, context).getModules();
211 } catch (IOException | YangSyntaxErrorException e) {
212 throw new YangParseException("Failed to parse yang data", e);
217 public SchemaContext parseSources(final Collection<ByteSource> sources, final SchemaContext context)
218 throws IOException, YangSyntaxErrorException {
219 if (sources == null) {
220 return resolveSchemaContext(Collections.<Module> emptySet());
223 final List<ModuleBuilder> sorted = resolveModuleBuilders(sources, context);
224 final Map<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sorted, context);
226 final Set<Module> unsorted = new LinkedHashSet<>(build(modules).values());
227 if (context != null) {
228 for (Module m : context.getModules()) {
229 if (!unsorted.contains(m)) {
234 Set<Module> result = new LinkedHashSet<>(
235 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
236 return resolveSchemaContext(result);
239 private LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> resolveModulesWithImports(final List<ModuleBuilder> sorted,
240 final SchemaContext context) {
241 final LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> modules = orderModules(sorted);
242 for (ModuleBuilder module : sorted) {
243 if (module != null) {
244 for (ModuleImport imp : module.getImports().values()) {
245 String prefix = imp.getPrefix();
246 ModuleBuilder targetModule = findModuleFromBuilders(modules, module, prefix, 0);
247 if (targetModule == null) {
248 Module result = findModuleFromContext(context, module, prefix, 0);
249 targetModule = new ModuleBuilder(result);
250 TreeMap<Date, ModuleBuilder> map = modules.get(prefix);
252 map = new TreeMap<>();
253 map.put(targetModule.getRevision(), targetModule);
254 modules.put(targetModule.getName(), map);
256 map.put(targetModule.getRevision(), targetModule);
259 module.addImportedModule(prefix, targetModule);
267 public Map<File, Module> parseYangModelsMapped(final Collection<File> yangFiles) {
268 if (yangFiles == null || yangFiles.isEmpty()) {
269 return Collections.emptyMap();
272 Map<ByteSource, File> byteSourceToFile = new HashMap<>();
273 for (final File file : yangFiles) {
274 ByteSource source = new ByteSource() {
276 public InputStream openStream() throws IOException {
277 return new NamedFileInputStream(file, file.getPath());
280 byteSourceToFile.put(source, file);
283 Map<ByteSource, Module> byteSourceToModule;
285 byteSourceToModule = parseYangModelSources(byteSourceToFile.keySet());
286 } catch (IOException | YangSyntaxErrorException e) {
287 throw new YangParseException("Failed to parse yang data", e);
289 Map<File, Module> result = new LinkedHashMap<>();
290 for (Map.Entry<ByteSource, Module> entry : byteSourceToModule.entrySet()) {
291 result.put(byteSourceToFile.get(entry.getKey()), entry.getValue());
297 public Map<InputStream, Module> parseYangModelsFromStreamsMapped(final Collection<InputStream> yangModelStreams) {
298 if (yangModelStreams == null || yangModelStreams.isEmpty()) {
299 return Collections.emptyMap();
302 Map<ByteSource, InputStream> sourceToStream = new HashMap<>();
303 for (final InputStream stream : yangModelStreams) {
304 ByteSource source = new ByteSource() {
306 public InputStream openStream() throws IOException {
307 return NamedByteArrayInputStream.create(stream);
310 sourceToStream.put(source, stream);
313 Map<ByteSource, Module> sourceToModule;
315 sourceToModule = parseYangModelSources(sourceToStream.keySet());
316 } catch (IOException | YangSyntaxErrorException e) {
317 throw new YangParseException("Failed to parse yang data", e);
319 Map<InputStream, Module> result = new LinkedHashMap<>();
320 for (Map.Entry<ByteSource, Module> entry : sourceToModule.entrySet()) {
321 result.put(sourceToStream.get(entry.getKey()), entry.getValue());
327 public SchemaContext resolveSchemaContext(final Set<Module> modules) {
328 // after merging parse method with this one, add support for getting
329 // submodule sources.
330 Map<ModuleIdentifier, String> identifiersToSources = new HashMap<>();
331 for (Module module : modules) {
332 ModuleImpl moduleImpl = (ModuleImpl) module;
333 identifiersToSources.put(module, moduleImpl.getSource());
335 return new SchemaContextImpl(modules, identifiersToSources);
338 private Map<ByteSource, Module> parseYangModelSources(final Collection<ByteSource> sources) throws IOException,
339 YangSyntaxErrorException {
340 if (sources == null || sources.isEmpty()) {
341 return Collections.emptyMap();
344 Map<ByteSource, ModuleBuilder> sourceToBuilder = resolveSources(sources);
345 // sort and check for duplicates
346 List<ModuleBuilder> sorted = ModuleDependencySort.sort(sourceToBuilder.values());
347 Map<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sorted, null);
348 Map<ModuleBuilder, Module> builderToModule = build(modules);
349 Map<ModuleBuilder, ByteSource> builderToSource = HashBiMap.create(sourceToBuilder).inverse();
350 sorted = ModuleDependencySort.sort(builderToModule.keySet());
352 Map<ByteSource, Module> result = new LinkedHashMap<>();
353 for (ModuleBuilder moduleBuilder : sorted) {
354 Module value = checkNotNull(builderToModule.get(moduleBuilder), "Cannot get module for %s", moduleBuilder);
355 result.put(builderToSource.get(moduleBuilder), value);
362 * Parse streams and resolve submodules.
365 * collection of streams to parse
366 * @return map, where key is source stream and value is module builder
368 * @throws YangSyntaxErrorException
370 // TODO: remove ByteSource result after removing YangModelParser
371 private Map<ByteSource, ModuleBuilder> resolveSources(final Collection<ByteSource> streams) throws IOException,
372 YangSyntaxErrorException {
373 Map<ByteSource, ModuleBuilder> builders = parseSourcesToBuilders(streams);
374 return resolveSubmodules(builders);
377 private Map<ByteSource, ModuleBuilder> parseSourcesToBuilders(final Collection<ByteSource> sources)
378 throws IOException, YangSyntaxErrorException {
379 final ParseTreeWalker walker = new ParseTreeWalker();
380 final Map<ByteSource, ParseTree> sourceToTree = parseYangSources(sources);
381 final Map<ByteSource, ModuleBuilder> sourceToBuilder = new LinkedHashMap<>();
384 new YangModelBasicValidator(walker).validate(sourceToTree.values());
386 YangParserListenerImpl yangModelParser;
387 for (Map.Entry<ByteSource, ParseTree> entry : sourceToTree.entrySet()) {
388 ByteSource source = entry.getKey();
389 String path = null; // TODO refactor to Optional
390 // TODO refactor so that path can be retrieved without opening
391 // stream: NamedInputStream -> NamedByteSource ?
392 try (InputStream stream = source.openStream()) {
393 if (stream instanceof NamedInputStream) {
394 path = stream.toString();
397 yangModelParser = new YangParserListenerImpl(path);
398 walker.walk(yangModelParser, entry.getValue());
399 ModuleBuilder moduleBuilder = yangModelParser.getModuleBuilder();
400 moduleBuilder.setSource(source);
401 sourceToBuilder.put(source, moduleBuilder);
403 return sourceToBuilder;
406 private Map<ByteSource, ModuleBuilder> resolveSubmodules(final Map<ByteSource, ModuleBuilder> builders) {
407 Map<ByteSource, ModuleBuilder> modules = new HashMap<>();
408 Set<ModuleBuilder> submodules = new HashSet<>();
409 for (Map.Entry<ByteSource, ModuleBuilder> entry : builders.entrySet()) {
410 ModuleBuilder moduleBuilder = entry.getValue();
411 if (moduleBuilder.isSubmodule()) {
412 submodules.add(moduleBuilder);
414 modules.put(entry.getKey(), moduleBuilder);
418 Collection<ModuleBuilder> values = modules.values();
419 for (ModuleBuilder submodule : submodules) {
420 for (ModuleBuilder module : values) {
421 if (module.getName().equals(submodule.getBelongsTo())) {
422 addSubmoduleToModule(submodule, module);
430 * Traverse collection of builders, find builders representing submodule and
431 * add this submodule to its parent module.
434 * collection of builders containing modules and submodules
435 * @return collection of module builders
437 private Collection<ModuleBuilder> resolveSubmodules(final Collection<ModuleBuilder> builders) {
438 Collection<ModuleBuilder> modules = new HashSet<>();
439 Set<ModuleBuilder> submodules = new HashSet<>();
440 for (ModuleBuilder moduleBuilder : builders) {
441 if (moduleBuilder.isSubmodule()) {
442 submodules.add(moduleBuilder);
444 modules.add(moduleBuilder);
448 for (ModuleBuilder submodule : submodules) {
449 for (ModuleBuilder module : modules) {
450 if (module.getName().equals(submodule.getBelongsTo())) {
451 addSubmoduleToModule(submodule, module);
458 private void addSubmoduleToModule(final ModuleBuilder submodule, final ModuleBuilder module) {
459 submodule.setParent(module);
460 module.getDirtyNodes().addAll(submodule.getDirtyNodes());
461 module.getImports().putAll(submodule.getImports());
462 module.getAugments().addAll(submodule.getAugments());
463 module.getAugmentBuilders().addAll(submodule.getAugmentBuilders());
464 module.getAllAugments().addAll(submodule.getAllAugments());
465 module.getChildNodeBuilders().addAll(submodule.getChildNodeBuilders());
466 module.getChildNodes().putAll(submodule.getChildNodes());
467 module.getGroupings().addAll(submodule.getGroupings());
468 module.getGroupingBuilders().addAll(submodule.getGroupingBuilders());
469 module.getTypeDefinitions().addAll(submodule.getTypeDefinitions());
470 module.getTypeDefinitionBuilders().addAll(submodule.getTypeDefinitionBuilders());
471 module.getUsesNodes().addAll(submodule.getUsesNodes());
472 module.getUsesNodeBuilders().addAll(submodule.getUsesNodeBuilders());
473 module.getAllGroupings().addAll(submodule.getAllGroupings());
474 module.getAllUsesNodes().addAll(submodule.getAllUsesNodes());
475 module.getRpcs().addAll(submodule.getRpcs());
476 module.getAddedRpcs().addAll(submodule.getAddedRpcs());
477 module.getNotifications().addAll(submodule.getNotifications());
478 module.getAddedNotifications().addAll(submodule.getAddedNotifications());
479 module.getIdentities().addAll(submodule.getIdentities());
480 module.getAddedIdentities().addAll(submodule.getAddedIdentities());
481 module.getFeatures().addAll(submodule.getFeatures());
482 module.getAddedFeatures().addAll(submodule.getAddedFeatures());
483 module.getDeviations().addAll(submodule.getDeviations());
484 module.getDeviationBuilders().addAll(submodule.getDeviationBuilders());
485 module.getExtensions().addAll(submodule.getExtensions());
486 module.getAddedExtensions().addAll(submodule.getAddedExtensions());
487 module.getUnknownNodes().addAll(submodule.getUnknownNodes());
488 module.getAllUnknownNodes().addAll(submodule.getAllUnknownNodes());
491 private List<ModuleBuilder> resolveModuleBuilders(final Collection<ByteSource> yangFileStreams,
492 final SchemaContext context) throws IOException, YangSyntaxErrorException {
493 Map<ByteSource, ModuleBuilder> parsedBuilders = resolveSources(yangFileStreams);
494 ModuleBuilder[] builders = new ModuleBuilder[parsedBuilders.size()];
495 parsedBuilders.values().toArray(builders);
497 // module dependency graph sorted
498 List<ModuleBuilder> sorted;
499 if (context == null) {
500 sorted = ModuleDependencySort.sort(builders);
502 sorted = ModuleDependencySort.sortWithContext(context, builders);
508 * Order modules by name and revision.
511 * topologically sorted modules
512 * @return modules ordered by name and revision
514 private LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> orderModules(final List<ModuleBuilder> modules) {
515 final LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> result = new LinkedHashMap<>();
516 for (final ModuleBuilder builder : modules) {
517 if (builder == null) {
520 final String builderName = builder.getName();
521 Date builderRevision = builder.getRevision();
522 if (builderRevision == null) {
523 builderRevision = new Date(0L);
525 TreeMap<Date, ModuleBuilder> builderByRevision = result.get(builderName);
526 if (builderByRevision == null) {
527 builderByRevision = new TreeMap<>();
528 builderByRevision.put(builderRevision, builder);
529 result.put(builderName, builderByRevision);
531 builderByRevision.put(builderRevision, builder);
538 * Find {@code main} dependencies from {@code other} and add them to
546 * collection to fill up
548 private void filterImports(final ModuleBuilder main, final Collection<ModuleBuilder> other,
549 final Collection<ModuleBuilder> filtered) {
550 Map<String, ModuleImport> imports = main.getImports();
552 // if this is submodule, add parent to filtered and pick its imports
553 if (main.isSubmodule()) {
554 TreeMap<Date, ModuleBuilder> dependencies = new TreeMap<>();
555 for (ModuleBuilder mb : other) {
556 if (mb.getName().equals(main.getBelongsTo())) {
557 dependencies.put(mb.getRevision(), mb);
560 ModuleBuilder parent = dependencies.get(dependencies.firstKey());
561 filtered.add(parent);
562 imports.putAll(parent.getImports());
565 for (ModuleImport mi : imports.values()) {
566 for (ModuleBuilder builder : other) {
567 if (mi.getModuleName().equals(builder.getModuleName())) {
568 if (mi.getRevision() == null) {
569 if (!filtered.contains(builder)) {
570 filtered.add(builder);
571 filterImports(builder, other, filtered);
574 if (mi.getRevision().equals(builder.getRevision())) {
575 if (!filtered.contains(builder)) {
576 filtered.add(builder);
577 filterImports(builder, other, filtered);
586 private Map<ByteSource, ParseTree> parseYangSources(final Collection<ByteSource> sources) throws IOException, YangSyntaxErrorException {
587 final Map<ByteSource, ParseTree> trees = new HashMap<>();
588 for (ByteSource source : sources) {
589 try (InputStream stream = source.openStream()) {
590 trees.put(source, parseYangSource(stream));
596 public static YangContext parseYangSource(final InputStream stream) throws IOException, YangSyntaxErrorException {
597 final YangLexer lexer = new YangLexer(new ANTLRInputStream(stream));
598 final CommonTokenStream tokens = new CommonTokenStream(lexer);
599 final YangParser parser = new YangParser(tokens);
600 parser.removeErrorListeners();
602 final YangErrorListener errorListener = new YangErrorListener();
603 parser.addErrorListener(errorListener);
605 final YangContext result = parser.yang();
606 errorListener.validate();
612 * Mini parser: This parsing context does not validate full YANG module,
613 * only parses header up to the revisions and imports.
615 * @see org.opendaylight.yangtools.yang.parser.impl.util.YangModelDependencyInfo
617 public static YangContext parseStreamWithoutErrorListeners(final InputStream yangStream) {
618 YangContext result = null;
620 final ANTLRInputStream input = new ANTLRInputStream(yangStream);
621 final YangLexer lexer = new YangLexer(input);
622 final CommonTokenStream tokens = new CommonTokenStream(lexer);
623 final YangParser parser = new YangParser(tokens);
624 parser.removeErrorListeners();
625 result = parser.yang();
626 } catch (IOException e) {
627 LOG.warn("Exception while reading yang file: " + yangStream, e);
633 * Creates builder-to-module map based on given modules. Method first
634 * resolve unresolved type references, instantiate groupings through uses
635 * statements and perform augmentation.
637 * Node resolving must be performed in following order:
640 * unresolved type references</li>
642 * uses in groupings</li>
644 * uses in other nodes</li>
651 * @return modules mapped on their builders
653 private Map<ModuleBuilder, Module> build(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
654 resolveDirtyNodes(modules);
655 resolveAugmentsTargetPath(modules);
656 resolveUsesTargetGrouping(modules);
657 resolveUsesForGroupings(modules);
658 resolveUsesForNodes(modules);
659 resolveAugments(modules);
660 resolveIdentities(modules);
661 resolveDeviations(modules);
664 final Map<ModuleBuilder, Module> result = new LinkedHashMap<>();
665 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
666 for (Map.Entry<Date, ModuleBuilder> childEntry : entry.getValue().entrySet()) {
667 final ModuleBuilder moduleBuilder = childEntry.getValue();
668 final Module module = moduleBuilder.build();
669 result.put(moduleBuilder, module);
676 * Resolve all unresolved type references.
681 private void resolveDirtyNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
682 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
683 for (Map.Entry<Date, ModuleBuilder> childEntry : entry.getValue().entrySet()) {
684 final ModuleBuilder module = childEntry.getValue();
685 resolveUnknownNodes(modules, module);
686 resolveDirtyNodes(modules, module);
692 * Search for dirty nodes (node which contains UnknownType) and resolve
696 * all available modules
700 private void resolveDirtyNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
701 final Set<TypeAwareBuilder> dirtyNodes = module.getDirtyNodes();
702 if (!dirtyNodes.isEmpty()) {
703 for (TypeAwareBuilder nodeToResolve : dirtyNodes) {
704 if (nodeToResolve instanceof UnionTypeBuilder) {
705 // special handling for union types
706 resolveTypeUnion((UnionTypeBuilder) nodeToResolve, modules, module);
707 } else if (nodeToResolve.getTypedef() instanceof IdentityrefTypeBuilder) {
708 // special handling for identityref types
709 IdentityrefTypeBuilder idref = (IdentityrefTypeBuilder) nodeToResolve.getTypedef();
710 IdentitySchemaNodeBuilder identity = findBaseIdentity(modules, module, idref.getBaseString(),
712 if (identity == null) {
713 throw new YangParseException(module.getName(), idref.getLine(), "Failed to find base identity");
715 idref.setBaseIdentity(identity);
716 nodeToResolve.setType(idref.build());
718 resolveType(nodeToResolve, modules, module);
725 * Traverse through augmentations of modules and fix their child nodes
731 private void resolveAugmentsTargetPath(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
732 // collect augments from all loaded modules
733 final List<AugmentationSchemaBuilder> allAugments = new ArrayList<>();
734 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
735 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
736 allAugments.addAll(inner.getValue().getAllAugments());
740 for (AugmentationSchemaBuilder augment : allAugments) {
741 setCorrectAugmentTargetPath(modules, augment);
746 * Find augment target and set correct schema path for all its child nodes.
753 private void setCorrectAugmentTargetPath(final Map<String, TreeMap<Date, ModuleBuilder>> modules,
754 final AugmentationSchemaBuilder augment) {
755 ModuleBuilder module = BuilderUtils.getParentModule(augment);
756 final SchemaPath newSchemaPath;
758 Builder parent = augment.getParent();
759 if (parent instanceof UsesNodeBuilder) {
760 DataNodeContainerBuilder usesParent = ((UsesNodeBuilder) parent).getParent();
762 QName baseQName = usesParent.getQName();
763 final QNameModule qnm;
765 if (baseQName == null) {
766 ModuleBuilder m = BuilderUtils.getParentModule(usesParent);
767 qnm = m.getQNameModule();
768 prefix = m.getPrefix();
770 qnm = baseQName.getModule();
771 prefix = baseQName.getPrefix();
774 SchemaPath s = usesParent.getPath();
775 for (QName qn : augment.getTargetPath().getPathFromRoot()) {
776 s = s.createChild(QName.create(qnm, prefix, qn.getLocalName()));
781 final List<QName> newPath = new ArrayList<>();
783 for (QName qn : augment.getTargetPath().getPathFromRoot()) {
784 QNameModule qnm = module.getQNameModule();
785 String localPrefix = qn.getPrefix();
786 if (localPrefix != null && !localPrefix.isEmpty()) {
787 ModuleBuilder currentModule = BuilderUtils.getModuleByPrefix(module, localPrefix);
788 if (currentModule == null) {
789 throw new YangParseException(module.getName(), augment.getLine(), "Module with prefix "
790 + localPrefix + " not found.");
792 qnm = currentModule.getQNameModule();
794 newPath.add(QName.create(qnm, localPrefix, qn.getLocalName()));
798 * FIXME: this method of SchemaPath construction is highly ineffective.
799 * It would be great if we could actually dive into the context,
800 * find the actual target node and reuse its SchemaPath. Can we
803 newSchemaPath = SchemaPath.create(newPath, true);
805 augment.setTargetNodeSchemaPath(newSchemaPath);
807 for (DataSchemaNodeBuilder childNode : augment.getChildNodeBuilders()) {
808 correctPathForAugmentNodes(childNode, augment.getTargetNodeSchemaPath());
813 * Set new schema path to node and all its child nodes based on given parent
814 * path. This method do not change the namespace.
817 * node which schema path should be updated
819 * schema path of parent node
821 private void correctPathForAugmentNodes(final DataSchemaNodeBuilder node, final SchemaPath parentPath) {
822 SchemaPath newPath = parentPath.createChild(node.getQName());
823 node.setPath(newPath);
824 if (node instanceof DataNodeContainerBuilder) {
825 for (DataSchemaNodeBuilder child : ((DataNodeContainerBuilder) node).getChildNodeBuilders()) {
826 correctPathForAugmentNodes(child, node.getPath());
829 if (node instanceof ChoiceBuilder) {
830 for (ChoiceCaseBuilder child : ((ChoiceBuilder) node).getCases()) {
831 correctPathForAugmentNodes(child, node.getPath());
837 * Check augments for mandatory nodes. If the target node is in another
838 * module, then nodes added by the augmentation MUST NOT be mandatory nodes.
839 * If mandatory node is found, throw an exception.
844 private void checkAugmentMandatoryNodes(final Collection<AugmentationSchemaBuilder> augments) {
845 for (AugmentationSchemaBuilder augment : augments) {
846 String augmentPrefix = augment.getTargetPath().getPathFromRoot().iterator().next().getPrefix();
847 ModuleBuilder module = BuilderUtils.getParentModule(augment);
848 String modulePrefix = module.getPrefix();
850 if (augmentPrefix == null || augmentPrefix.isEmpty() || augmentPrefix.equals(modulePrefix)) {
854 for (DataSchemaNodeBuilder childNode : augment.getChildNodeBuilders()) {
855 if (childNode.getConstraints().isMandatory()) {
856 throw new YangParseException(augment.getModuleName(), augment.getLine(),
857 "Error in augment parsing: cannot augment mandatory node "
858 + childNode.getQName().getLocalName());
865 * Go through all augment definitions and resolve them.
868 * all loaded modules topologically sorted (based on dependencies
869 * between each other)
871 private void resolveAugments(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
872 List<ModuleBuilder> all = new ArrayList<>();
873 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
874 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
875 all.add(inner.getValue());
879 for (ModuleBuilder mb : all) {
881 List<AugmentationSchemaBuilder> augments = mb.getAllAugments();
882 checkAugmentMandatoryNodes(augments);
883 Collections.sort(augments, Comparators.AUGMENT_BUILDER_COMP);
884 for (AugmentationSchemaBuilder augment : augments) {
885 if (!(augment.isResolved())) {
886 boolean resolved = resolveAugment(augment, mb, modules);
888 throw new YangParseException(augment.getModuleName(), augment.getLine(),
889 "Error in augment parsing: failed to find augment target: " + augment);
898 * Perform augmentation defined under uses statement.
906 * @return true if augment process succeed
908 private boolean resolveUsesAugment(final AugmentationSchemaBuilder augment, final ModuleBuilder module,
909 final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
910 if (augment.isResolved()) {
914 UsesNodeBuilder usesNode = (UsesNodeBuilder) augment.getParent();
915 DataNodeContainerBuilder parentNode = usesNode.getParent();
916 Optional<SchemaNodeBuilder> potentialTargetNode;
917 SchemaPath resolvedTargetPath = augment.getTargetNodeSchemaPath();
918 if (parentNode instanceof ModuleBuilder && resolvedTargetPath.isAbsolute()) {
919 // Uses is directly used in module body, we lookup
920 // We lookup in data namespace to find correct augmentation target
921 potentialTargetNode = findSchemaNodeInModule(resolvedTargetPath, (ModuleBuilder) parentNode);
923 // Uses is used in local context (be it data namespace or grouping
925 // since all nodes via uses are imported to localName, it is safe to
926 // to proceed only with local names.
928 // Conflicting elements in other namespaces are still not present
929 // since resolveUsesAugment occurs before augmenting from external
931 potentialTargetNode = Optional.<SchemaNodeBuilder> fromNullable(findSchemaNode(augment.getTargetPath()
932 .getPath(), (SchemaNodeBuilder) parentNode));
935 if (potentialTargetNode.isPresent()) {
936 SchemaNodeBuilder targetNode = potentialTargetNode.get();
937 if (targetNode instanceof AugmentationTargetBuilder) {
938 fillAugmentTarget(augment, targetNode);
939 ((AugmentationTargetBuilder) targetNode).addAugmentation(augment);
940 augment.setResolved(true);
943 throw new YangParseException(module.getName(), augment.getLine(), String.format(
944 "Failed to resolve augment in uses. Invalid augment target: %s", potentialTargetNode));
947 throw new YangParseException(module.getName(), augment.getLine(), String.format(
948 "Failed to resolve augment in uses. Invalid augment target path: %s", augment.getTargetPath()));
954 * Find augment target module and perform augmentation.
962 * @return true if augment process succeed
964 private boolean resolveAugment(final AugmentationSchemaBuilder augment, final ModuleBuilder module,
965 final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
966 if (augment.isResolved()) {
970 QName targetModuleName = augment.getTargetPath().getPathFromRoot().iterator().next();
971 ModuleBuilder targetModule = BuilderUtils.getModuleByPrefix(module, targetModuleName.getPrefix());
972 if (targetModule == null) {
973 throw new YangParseException(module.getModuleName(), augment.getLine(), "Failed to resolve augment "
977 return processAugmentation(augment, targetModule);
981 * Go through identity statements defined in current module and resolve
982 * their 'base' statement.
987 private void resolveIdentities(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
988 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
989 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
990 ModuleBuilder module = inner.getValue();
991 final Set<IdentitySchemaNodeBuilder> identities = module.getAddedIdentities();
992 for (IdentitySchemaNodeBuilder identity : identities) {
993 resolveIdentity(modules, module, identity);
999 private void resolveIdentity(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module,
1000 final IdentitySchemaNodeBuilder identity) {
1001 final String baseIdentityName = identity.getBaseIdentityName();
1002 if (baseIdentityName != null) {
1003 IdentitySchemaNodeBuilder result = null;
1004 if (baseIdentityName.contains(":")) {
1005 final int line = identity.getLine();
1006 String[] splittedBase = baseIdentityName.split(":");
1007 if (splittedBase.length > 2) {
1008 throw new YangParseException(module.getName(), line, "Failed to parse identityref base: "
1009 + baseIdentityName);
1011 String prefix = splittedBase[0];
1012 String name = splittedBase[1];
1013 ModuleBuilder dependentModule = BuilderUtils.getModuleByPrefix(module, prefix);
1014 result = BuilderUtils.findIdentity(dependentModule.getAddedIdentities(), name);
1016 result = BuilderUtils.findIdentity(module.getAddedIdentities(), baseIdentityName);
1018 identity.setBaseIdentity(result);
1023 * Find and add reference of uses target grouping.
1026 * all loaded modules
1028 private void resolveUsesTargetGrouping(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1029 final List<UsesNodeBuilder> allUses = new ArrayList<>();
1030 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
1031 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
1032 allUses.addAll(inner.getValue().getAllUsesNodes());
1035 for (UsesNodeBuilder usesNode : allUses) {
1036 ModuleBuilder module = BuilderUtils.getParentModule(usesNode);
1037 final GroupingBuilder targetGroupingBuilder = GroupingUtils.getTargetGroupingFromModules(usesNode, modules,
1039 if (targetGroupingBuilder == null) {
1040 throw new YangParseException(module.getName(), usesNode.getLine(), "Referenced grouping '"
1041 + usesNode.getGroupingPathAsString() + "' not found.");
1043 usesNode.setGrouping(targetGroupingBuilder);
1048 * Resolve uses statements defined in groupings.
1051 * all loaded modules
1053 private void resolveUsesForGroupings(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1054 final Set<GroupingBuilder> allGroupings = new HashSet<>();
1055 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
1056 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
1057 ModuleBuilder module = inner.getValue();
1058 allGroupings.addAll(module.getAllGroupings());
1061 final List<GroupingBuilder> sorted = GroupingSort.sort(allGroupings);
1062 for (GroupingBuilder gb : sorted) {
1063 List<UsesNodeBuilder> usesNodes = new ArrayList<>(GroupingSort.getAllUsesNodes(gb));
1064 Collections.sort(usesNodes, new GroupingUtils.UsesComparator());
1065 for (UsesNodeBuilder usesNode : usesNodes) {
1066 resolveUses(usesNode, modules);
1072 * Resolve uses statements.
1075 * all loaded modules
1077 private void resolveUsesForNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1078 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
1079 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
1080 ModuleBuilder module = inner.getValue();
1081 List<UsesNodeBuilder> usesNodes = module.getAllUsesNodes();
1082 Collections.sort(usesNodes, new GroupingUtils.UsesComparator());
1083 for (UsesNodeBuilder usesNode : usesNodes) {
1084 resolveUses(usesNode, modules);
1091 * Find target grouping and copy its child nodes to current location with
1095 * uses node to resolve
1097 * all loaded modules
1099 private void resolveUses(final UsesNodeBuilder usesNode, final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1100 if (!usesNode.isResolved()) {
1101 DataNodeContainerBuilder parent = usesNode.getParent();
1102 ModuleBuilder module = BuilderUtils.getParentModule(parent);
1103 GroupingBuilder target = GroupingUtils.getTargetGroupingFromModules(usesNode, modules, module);
1105 int index = nodeAfterUsesIndex(usesNode);
1106 List<DataSchemaNodeBuilder> targetNodes = target.instantiateChildNodes(parent);
1107 for (DataSchemaNodeBuilder targetNode : targetNodes) {
1108 parent.addChildNode(index++, targetNode);
1110 parent.getTypeDefinitionBuilders().addAll(target.instantiateTypedefs(parent));
1111 parent.getGroupingBuilders().addAll(target.instantiateGroupings(parent));
1112 parent.getUnknownNodes().addAll(target.instantiateUnknownNodes(parent));
1113 usesNode.setResolved(true);
1114 for (AugmentationSchemaBuilder augment : usesNode.getAugmentations()) {
1115 resolveUsesAugment(augment, module, modules);
1118 GroupingUtils.performRefine(usesNode);
1122 private int nodeAfterUsesIndex(final UsesNodeBuilder usesNode) {
1123 DataNodeContainerBuilder parent = usesNode.getParent();
1124 int usesLine = usesNode.getLine();
1126 List<DataSchemaNodeBuilder> childNodes = parent.getChildNodeBuilders();
1127 if (childNodes.isEmpty()) {
1131 DataSchemaNodeBuilder nextNodeAfterUses = null;
1132 for (DataSchemaNodeBuilder childNode : childNodes) {
1133 if (!(childNode.isAddedByUses()) && !(childNode.isAugmenting())) {
1134 if (childNode.getLine() > usesLine) {
1135 nextNodeAfterUses = childNode;
1141 // uses is declared after child nodes
1142 if (nextNodeAfterUses == null) {
1143 return childNodes.size();
1146 return parent.getChildNodeBuilders().indexOf(nextNodeAfterUses);
1150 * Try to find extension describing this unknown node and assign it to
1151 * unknown node builder.
1154 * all loaded modules
1158 private void resolveUnknownNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
1159 for (UnknownSchemaNodeBuilder usnb : module.getAllUnknownNodes()) {
1160 QName nodeType = usnb.getNodeType();
1161 ModuleBuilder dependentModuleBuilder = BuilderUtils.getModuleByPrefix(module, nodeType.getPrefix());
1162 if (dependentModuleBuilder == null) {
1164 "Error in module {} at line {}: Failed to resolve node {}: no such extension definition found.",
1165 module.getName(), usnb.getLine(), usnb);
1168 ExtensionBuilder extBuilder = findExtBuilder(nodeType.getLocalName(),
1169 dependentModuleBuilder.getAddedExtensions());
1170 if (extBuilder == null) {
1171 ExtensionDefinition extDef = findExtDef(nodeType.getLocalName(), dependentModuleBuilder.getExtensions());
1172 if (extDef == null) {
1174 "Error in module {} at line {}: Failed to resolve node {}: no such extension definition found.",
1175 module.getName(), usnb.getLine(), usnb);
1177 usnb.setNodeType(new QName(extDef.getQName().getNamespace(), extDef.getQName().getRevision(),
1178 nodeType.getPrefix(), extDef.getQName().getLocalName()));
1179 usnb.setExtensionDefinition(extDef);
1182 usnb.setNodeType(QName.create(extBuilder.getQName().getModule(),
1183 nodeType.getPrefix(), extBuilder.getQName().getLocalName()));
1184 usnb.setExtensionBuilder(extBuilder);
1189 private ExtensionBuilder findExtBuilder(final String name, final Collection<ExtensionBuilder> extensions) {
1190 for (ExtensionBuilder extension : extensions) {
1191 if (extension.getQName().getLocalName().equals(name)) {
1198 private ExtensionDefinition findExtDef(final String name, final Collection<ExtensionDefinition> extensions) {
1199 for (ExtensionDefinition extension : extensions) {
1200 if (extension.getQName().getLocalName().equals(name)) {
1208 * Traverse through modules and resolve their deviation statements.
1211 * all loaded modules
1213 private void resolveDeviations(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1214 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
1215 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
1216 ModuleBuilder b = inner.getValue();
1217 resolveDeviation(modules, b);
1223 * Traverse through module and resolve its deviation statements.
1226 * all loaded modules
1228 * module in which resolve deviations
1230 private void resolveDeviation(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
1231 for (DeviationBuilder dev : module.getDeviationBuilders()) {
1232 SchemaPath targetPath = dev.getTargetPath();
1233 Iterable<QName> path = targetPath.getPathFromRoot();
1234 QName q0 = path.iterator().next();
1235 String prefix = q0.getPrefix();
1236 if (prefix == null) {
1237 prefix = module.getPrefix();
1240 ModuleBuilder dependentModuleBuilder = BuilderUtils.getModuleByPrefix(module, prefix);
1241 processDeviation(dev, dependentModuleBuilder, path, module);
1246 * Correct deviation target path in deviation builder.
1250 * @param dependentModuleBuilder
1251 * module containing deviation target
1253 * current deviation target path
1257 private void processDeviation(final DeviationBuilder dev, final ModuleBuilder dependentModuleBuilder,
1258 final Iterable<QName> path, final ModuleBuilder module) {
1259 final int line = dev.getLine();
1260 Builder currentParent = dependentModuleBuilder;
1262 for (QName q : path) {
1263 if (currentParent == null) {
1264 throw new YangParseException(module.getName(), line, FAIL_DEVIATION_TARGET);
1266 String name = q.getLocalName();
1267 if (currentParent instanceof DataNodeContainerBuilder) {
1268 currentParent = ((DataNodeContainerBuilder) currentParent).getDataChildByName(name);
1272 if (!(currentParent instanceof SchemaNodeBuilder)) {
1273 throw new YangParseException(module.getName(), line, FAIL_DEVIATION_TARGET);
1275 dev.setTargetPath(((SchemaNodeBuilder) currentParent).getPath());