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.BuilderUtils.setNodeAddedByUses;
18 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.wrapChildNodes;
19 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.wrapGroupings;
20 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.wrapTypedefs;
21 import static org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils.wrapUnknownNodes;
22 import static org.opendaylight.yangtools.yang.parser.builder.impl.TypeUtils.resolveType;
23 import static org.opendaylight.yangtools.yang.parser.builder.impl.TypeUtils.resolveTypeUnion;
25 import com.google.common.base.Optional;
26 import com.google.common.base.Preconditions;
27 import com.google.common.base.Splitter;
28 import com.google.common.collect.HashBiMap;
29 import com.google.common.io.ByteSource;
31 import java.io.IOException;
32 import java.io.InputStream;
33 import java.util.ArrayList;
34 import java.util.Collection;
35 import java.util.Collections;
36 import java.util.Date;
37 import java.util.HashMap;
38 import java.util.HashSet;
39 import java.util.Iterator;
40 import java.util.LinkedHashMap;
41 import java.util.LinkedHashSet;
42 import java.util.List;
45 import java.util.TreeMap;
46 import javax.annotation.concurrent.Immutable;
47 import org.antlr.v4.runtime.ANTLRInputStream;
48 import org.antlr.v4.runtime.CommonTokenStream;
49 import org.antlr.v4.runtime.tree.ParseTree;
50 import org.antlr.v4.runtime.tree.ParseTreeWalker;
51 import org.opendaylight.yangtools.antlrv4.code.gen.YangLexer;
52 import org.opendaylight.yangtools.antlrv4.code.gen.YangParser;
53 import org.opendaylight.yangtools.antlrv4.code.gen.YangParser.YangContext;
54 import org.opendaylight.yangtools.yang.common.QName;
55 import org.opendaylight.yangtools.yang.common.QNameModule;
56 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
57 import org.opendaylight.yangtools.yang.model.api.GroupingDefinition;
58 import org.opendaylight.yangtools.yang.model.api.Module;
59 import org.opendaylight.yangtools.yang.model.api.ModuleIdentifier;
60 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
61 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
62 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
63 import org.opendaylight.yangtools.yang.model.parser.api.YangContextParser;
64 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
65 import org.opendaylight.yangtools.yang.parser.builder.api.AugmentationSchemaBuilder;
66 import org.opendaylight.yangtools.yang.parser.builder.api.AugmentationTargetBuilder;
67 import org.opendaylight.yangtools.yang.parser.builder.api.Builder;
68 import org.opendaylight.yangtools.yang.parser.builder.api.DataNodeContainerBuilder;
69 import org.opendaylight.yangtools.yang.parser.builder.api.DataSchemaNodeBuilder;
70 import org.opendaylight.yangtools.yang.parser.builder.api.ExtensionBuilder;
71 import org.opendaylight.yangtools.yang.parser.builder.api.GroupingBuilder;
72 import org.opendaylight.yangtools.yang.parser.builder.api.SchemaNodeBuilder;
73 import org.opendaylight.yangtools.yang.parser.builder.api.TypeAwareBuilder;
74 import org.opendaylight.yangtools.yang.parser.builder.api.TypeDefinitionBuilder;
75 import org.opendaylight.yangtools.yang.parser.builder.api.UnknownSchemaNodeBuilder;
76 import org.opendaylight.yangtools.yang.parser.builder.api.UsesNodeBuilder;
77 import org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils;
78 import org.opendaylight.yangtools.yang.parser.builder.impl.ChoiceBuilder;
79 import org.opendaylight.yangtools.yang.parser.builder.impl.ChoiceCaseBuilder;
80 import org.opendaylight.yangtools.yang.parser.builder.impl.DeviationBuilder;
81 import org.opendaylight.yangtools.yang.parser.builder.impl.GroupingUtils;
82 import org.opendaylight.yangtools.yang.parser.builder.impl.IdentitySchemaNodeBuilder;
83 import org.opendaylight.yangtools.yang.parser.builder.impl.IdentityrefTypeBuilder;
84 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleBuilder;
85 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleImpl;
86 import org.opendaylight.yangtools.yang.parser.builder.impl.UnionTypeBuilder;
87 import org.opendaylight.yangtools.yang.parser.builder.impl.UnknownSchemaNodeBuilderImpl;
88 import org.opendaylight.yangtools.yang.parser.builder.util.Comparators;
89 import org.opendaylight.yangtools.yang.parser.util.ModuleDependencySort;
90 import org.opendaylight.yangtools.yang.parser.util.NamedByteArrayInputStream;
91 import org.opendaylight.yangtools.yang.parser.util.NamedFileInputStream;
92 import org.opendaylight.yangtools.yang.parser.util.NamedInputStream;
93 import org.opendaylight.yangtools.yang.parser.util.YangParseException;
94 import org.slf4j.Logger;
95 import org.slf4j.LoggerFactory;
98 public final class YangParserImpl implements YangContextParser {
99 private static final Logger LOG = LoggerFactory.getLogger(YangParserImpl.class);
100 private static final String FAIL_DEVIATION_TARGET = "Failed to find deviation target.";
101 private static final Splitter COLON_SPLITTER = Splitter.on(':');
102 private static final YangParserImpl INSTANCE = new YangParserImpl();
104 public static YangParserImpl getInstance() {
110 public Set<Module> parseYangModels(final File yangFile, final File directory) {
112 return parseFile(yangFile, directory).getModules();
113 } catch (IOException | YangSyntaxErrorException e) {
114 throw new YangParseException("Failed to parse yang data", e);
119 public SchemaContext parseFile(final File yangFile, final File directory) throws IOException,
120 YangSyntaxErrorException {
121 Preconditions.checkState(yangFile.exists(), yangFile + " does not exists");
122 Preconditions.checkState(directory.exists(), directory + " does not exists");
123 Preconditions.checkState(directory.isDirectory(), directory + " is not a directory");
125 final String yangFileName = yangFile.getName();
126 final String[] fileList = checkNotNull(directory.list(), directory + " not found or is not a directory");
128 Map<ByteSource, File> sourceToFile = new LinkedHashMap<>();
129 ByteSource mainFileSource = BuilderUtils.fileToByteSource(yangFile);
130 sourceToFile.put(mainFileSource, yangFile);
132 for (String fileName : fileList) {
133 if (fileName.equals(yangFileName)) {
136 File dependency = new File(directory, fileName);
137 if (dependency.isFile()) {
138 sourceToFile.put(BuilderUtils.fileToByteSource(dependency), dependency);
142 Map<ByteSource, ModuleBuilder> sourceToBuilder = parseSourcesToBuilders(sourceToFile.keySet());
143 ModuleBuilder main = sourceToBuilder.get(mainFileSource);
145 List<ModuleBuilder> moduleBuilders = new ArrayList<>();
146 moduleBuilders.add(main);
147 filterImports(main, new ArrayList<>(sourceToBuilder.values()), moduleBuilders);
148 Collection<ModuleBuilder> resolved = resolveSubmodules(moduleBuilders);
150 // module builders sorted by dependencies
151 List<ModuleBuilder> sortedBuilders = ModuleDependencySort.sort(resolved);
152 LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sortedBuilders, null);
153 Collection<Module> unsorted = build(modules).values();
154 Set<Module> result = new LinkedHashSet<>(
155 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
156 return resolveSchemaContext(result);
161 public Set<Module> parseYangModels(final List<File> yangFiles) {
162 return parseFiles(yangFiles).getModules();
166 public SchemaContext parseFiles(final Collection<File> yangFiles) {
167 Collection<Module> unsorted = parseYangModelsMapped(yangFiles).values();
168 Set<Module> sorted = new LinkedHashSet<>(
169 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
170 return resolveSchemaContext(sorted);
175 public Set<Module> parseYangModels(final List<File> yangFiles, final SchemaContext context) {
177 return parseFiles(yangFiles, context).getModules();
178 } catch (IOException | YangSyntaxErrorException e) {
179 throw new YangParseException("Failed to parse yang data", e);
184 public SchemaContext parseFiles(final Collection<File> yangFiles, final SchemaContext context) throws IOException,
185 YangSyntaxErrorException {
186 if (yangFiles == null) {
187 return resolveSchemaContext(Collections.<Module> emptySet());
190 Collection<ByteSource> sources = BuilderUtils.filesToByteSources(yangFiles);
191 return parseSources(sources, context);
196 public Set<Module> parseYangModelsFromStreams(final List<InputStream> yangModelStreams) {
198 Collection<ByteSource> sources = BuilderUtils.streamsToByteSources(yangModelStreams);
199 return parseSources(sources).getModules();
200 } catch (IOException | YangSyntaxErrorException e) {
201 throw new YangParseException("Failed to parse yang data", e);
206 public SchemaContext parseSources(final Collection<ByteSource> sources) throws IOException,
207 YangSyntaxErrorException {
208 Collection<Module> unsorted = parseYangModelSources(sources).values();
209 Set<Module> sorted = new LinkedHashSet<>(
210 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
211 return resolveSchemaContext(sorted);
216 public Set<Module> parseYangModelsFromStreams(final List<InputStream> yangModelStreams, final SchemaContext context) {
218 Collection<ByteSource> sources = BuilderUtils.streamsToByteSources(yangModelStreams);
219 return parseSources(sources, context).getModules();
220 } catch (IOException | YangSyntaxErrorException e) {
221 throw new YangParseException("Failed to parse yang data", e);
226 public SchemaContext parseSources(final Collection<ByteSource> sources, final SchemaContext context)
227 throws IOException, YangSyntaxErrorException {
228 if (sources == null) {
229 return resolveSchemaContext(Collections.<Module> emptySet());
232 final List<ModuleBuilder> sorted = resolveModuleBuilders(sources, context);
233 final Map<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sorted, context);
235 final Set<Module> unsorted = new LinkedHashSet<>(build(modules).values());
236 if (context != null) {
237 for (Module m : context.getModules()) {
238 if (!unsorted.contains(m)) {
243 Set<Module> result = new LinkedHashSet<>(
244 ModuleDependencySort.sort(unsorted.toArray(new Module[unsorted.size()])));
245 return resolveSchemaContext(result);
248 private LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> resolveModulesWithImports(List<ModuleBuilder> sorted,
249 SchemaContext context) {
250 final LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> modules = orderModules(sorted);
251 for (ModuleBuilder module : sorted) {
252 if (module != null) {
253 for (ModuleImport imp : module.getImports().values()) {
254 String prefix = imp.getPrefix();
255 ModuleBuilder targetModule = findModuleFromBuilders(modules, module, prefix, 0);
256 if (targetModule == null) {
257 Module result = findModuleFromContext(context, module, prefix, 0);
258 targetModule = new ModuleBuilder(result);
259 TreeMap<Date, ModuleBuilder> map = modules.get(prefix);
261 map = new TreeMap<>();
262 map.put(targetModule.getRevision(), targetModule);
263 modules.put(targetModule.getName(), map);
265 map.put(targetModule.getRevision(), targetModule);
268 module.addImportedModule(prefix, targetModule);
276 public Map<File, Module> parseYangModelsMapped(final Collection<File> yangFiles) {
277 if (yangFiles == null || yangFiles.isEmpty()) {
278 return Collections.emptyMap();
281 Map<ByteSource, File> byteSourceToFile = new HashMap<>();
282 for (final File file : yangFiles) {
283 ByteSource source = new ByteSource() {
285 public InputStream openStream() throws IOException {
286 return new NamedFileInputStream(file, file.getPath());
289 byteSourceToFile.put(source, file);
292 Map<ByteSource, Module> byteSourceToModule;
294 byteSourceToModule = parseYangModelSources(byteSourceToFile.keySet());
295 } catch (IOException | YangSyntaxErrorException e) {
296 throw new YangParseException("Failed to parse yang data", e);
298 Map<File, Module> result = new LinkedHashMap<>();
299 for (Map.Entry<ByteSource, Module> entry : byteSourceToModule.entrySet()) {
300 result.put(byteSourceToFile.get(entry.getKey()), entry.getValue());
306 public Map<InputStream, Module> parseYangModelsFromStreamsMapped(final Collection<InputStream> yangModelStreams) {
307 if (yangModelStreams == null || yangModelStreams.isEmpty()) {
308 return Collections.emptyMap();
311 Map<ByteSource, InputStream> sourceToStream = new HashMap<>();
312 for (final InputStream stream : yangModelStreams) {
313 ByteSource source = new ByteSource() {
315 public InputStream openStream() throws IOException {
316 return NamedByteArrayInputStream.create(stream);
319 sourceToStream.put(source, stream);
322 Map<ByteSource, Module> sourceToModule;
324 sourceToModule = parseYangModelSources(sourceToStream.keySet());
325 } catch (IOException | YangSyntaxErrorException e) {
326 throw new YangParseException("Failed to parse yang data", e);
328 Map<InputStream, Module> result = new LinkedHashMap<>();
329 for (Map.Entry<ByteSource, Module> entry : sourceToModule.entrySet()) {
330 result.put(sourceToStream.get(entry.getKey()), entry.getValue());
336 public SchemaContext resolveSchemaContext(final Set<Module> modules) {
337 // after merging parse method with this one, add support for getting
338 // submodule sources.
339 Map<ModuleIdentifier, String> identifiersToSources = new HashMap<>();
340 for (Module module : modules) {
341 ModuleImpl moduleImpl = (ModuleImpl) module;
342 identifiersToSources.put(module, moduleImpl.getSource());
344 return new SchemaContextImpl(modules, identifiersToSources);
347 private Map<ByteSource, Module> parseYangModelSources(final Collection<ByteSource> sources) throws IOException,
348 YangSyntaxErrorException {
349 if (sources == null || sources.isEmpty()) {
350 return Collections.emptyMap();
353 Map<ByteSource, ModuleBuilder> sourceToBuilder = resolveSources(sources);
354 // sort and check for duplicates
355 List<ModuleBuilder> sorted = ModuleDependencySort.sort(sourceToBuilder.values());
356 Map<String, TreeMap<Date, ModuleBuilder>> modules = resolveModulesWithImports(sorted, null);
357 Map<ModuleBuilder, Module> builderToModule = build(modules);
358 Map<ModuleBuilder, ByteSource> builderToSource = HashBiMap.create(sourceToBuilder).inverse();
359 sorted = ModuleDependencySort.sort(builderToModule.keySet());
361 Map<ByteSource, Module> result = new LinkedHashMap<>();
362 for (ModuleBuilder moduleBuilder : sorted) {
363 Module value = checkNotNull(builderToModule.get(moduleBuilder), "Cannot get module for %s", moduleBuilder);
364 result.put(builderToSource.get(moduleBuilder), value);
371 * Parse streams and resolve submodules.
374 * collection of streams to parse
375 * @return map, where key is source stream and value is module builder
377 * @throws YangSyntaxErrorException
379 // TODO: remove ByteSource result after removing YangModelParser
380 private Map<ByteSource, ModuleBuilder> resolveSources(final Collection<ByteSource> streams) throws IOException,
381 YangSyntaxErrorException {
382 Map<ByteSource, ModuleBuilder> builders = parseSourcesToBuilders(streams);
383 return resolveSubmodules(builders);
386 private Map<ByteSource, ModuleBuilder> parseSourcesToBuilders(final Collection<ByteSource> sources)
387 throws IOException, YangSyntaxErrorException {
388 final ParseTreeWalker walker = new ParseTreeWalker();
389 final Map<ByteSource, ParseTree> sourceToTree = parseYangSources(sources);
390 final Map<ByteSource, ModuleBuilder> sourceToBuilder = new LinkedHashMap<>();
393 new YangModelBasicValidator(walker).validate(sourceToTree.values());
395 YangParserListenerImpl yangModelParser;
396 for (Map.Entry<ByteSource, ParseTree> entry : sourceToTree.entrySet()) {
397 ByteSource source = entry.getKey();
398 String path = null; // TODO refactor to Optional
399 // TODO refactor so that path can be retrieved without opening
400 // stream: NamedInputStream -> NamedByteSource ?
401 try (InputStream stream = source.openStream()) {
402 if (stream instanceof NamedInputStream) {
403 path = stream.toString();
406 yangModelParser = new YangParserListenerImpl(path);
407 walker.walk(yangModelParser, entry.getValue());
408 ModuleBuilder moduleBuilder = yangModelParser.getModuleBuilder();
409 moduleBuilder.setSource(source);
410 sourceToBuilder.put(source, moduleBuilder);
412 return sourceToBuilder;
415 private Map<ByteSource, ModuleBuilder> resolveSubmodules(final Map<ByteSource, ModuleBuilder> builders) {
416 Map<ByteSource, ModuleBuilder> modules = new HashMap<>();
417 Set<ModuleBuilder> submodules = new HashSet<>();
418 for (Map.Entry<ByteSource, ModuleBuilder> entry : builders.entrySet()) {
419 ModuleBuilder moduleBuilder = entry.getValue();
420 if (moduleBuilder.isSubmodule()) {
421 submodules.add(moduleBuilder);
423 modules.put(entry.getKey(), moduleBuilder);
427 Collection<ModuleBuilder> values = modules.values();
428 for (ModuleBuilder submodule : submodules) {
429 for (ModuleBuilder module : values) {
430 if (module.getName().equals(submodule.getBelongsTo())) {
431 addSubmoduleToModule(submodule, module);
439 * Traverse collection of builders, find builders representing submodule and
440 * add this submodule to its parent module.
443 * collection of builders containing modules and submodules
444 * @return collection of module builders
446 private Collection<ModuleBuilder> resolveSubmodules(final Collection<ModuleBuilder> builders) {
447 Collection<ModuleBuilder> modules = new HashSet<>();
448 Set<ModuleBuilder> submodules = new HashSet<>();
449 for (ModuleBuilder moduleBuilder : builders) {
450 if (moduleBuilder.isSubmodule()) {
451 submodules.add(moduleBuilder);
453 modules.add(moduleBuilder);
457 for (ModuleBuilder submodule : submodules) {
458 for (ModuleBuilder module : modules) {
459 if (module.getName().equals(submodule.getBelongsTo())) {
460 addSubmoduleToModule(submodule, module);
467 private void addSubmoduleToModule(final ModuleBuilder submodule, final ModuleBuilder module) {
468 submodule.setParent(module);
469 module.getDirtyNodes().addAll(submodule.getDirtyNodes());
470 module.getImports().putAll(submodule.getImports());
471 module.getAugments().addAll(submodule.getAugments());
472 module.getAugmentBuilders().addAll(submodule.getAugmentBuilders());
473 module.getAllAugments().addAll(submodule.getAllAugments());
474 module.getChildNodeBuilders().addAll(submodule.getChildNodeBuilders());
475 module.getChildNodes().putAll(submodule.getChildNodes());
476 module.getGroupings().addAll(submodule.getGroupings());
477 module.getGroupingBuilders().addAll(submodule.getGroupingBuilders());
478 module.getTypeDefinitions().addAll(submodule.getTypeDefinitions());
479 module.getTypeDefinitionBuilders().addAll(submodule.getTypeDefinitionBuilders());
480 module.getUsesNodes().addAll(submodule.getUsesNodes());
481 module.getUsesNodeBuilders().addAll(submodule.getUsesNodeBuilders());
482 module.getAllGroupings().addAll(submodule.getAllGroupings());
483 module.getAllUsesNodes().addAll(submodule.getAllUsesNodes());
484 module.getRpcs().addAll(submodule.getRpcs());
485 module.getAddedRpcs().addAll(submodule.getAddedRpcs());
486 module.getNotifications().addAll(submodule.getNotifications());
487 module.getAddedNotifications().addAll(submodule.getAddedNotifications());
488 module.getIdentities().addAll(submodule.getIdentities());
489 module.getAddedIdentities().addAll(submodule.getAddedIdentities());
490 module.getFeatures().addAll(submodule.getFeatures());
491 module.getAddedFeatures().addAll(submodule.getAddedFeatures());
492 module.getDeviations().addAll(submodule.getDeviations());
493 module.getDeviationBuilders().addAll(submodule.getDeviationBuilders());
494 module.getExtensions().addAll(submodule.getExtensions());
495 module.getAddedExtensions().addAll(submodule.getAddedExtensions());
496 module.getUnknownNodes().addAll(submodule.getUnknownNodes());
497 module.getAllUnknownNodes().addAll(submodule.getAllUnknownNodes());
500 private List<ModuleBuilder> resolveModuleBuilders(final Collection<ByteSource> yangFileStreams,
501 final SchemaContext context) throws IOException, YangSyntaxErrorException {
502 Map<ByteSource, ModuleBuilder> parsedBuilders = resolveSources(yangFileStreams);
503 ModuleBuilder[] builders = new ModuleBuilder[parsedBuilders.size()];
504 parsedBuilders.values().toArray(builders);
506 // module dependency graph sorted
507 List<ModuleBuilder> sorted;
508 if (context == null) {
509 sorted = ModuleDependencySort.sort(builders);
511 sorted = ModuleDependencySort.sortWithContext(context, builders);
517 * Order modules by name and revision.
520 * topologically sorted modules
521 * @return modules ordered by name and revision
523 private LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> orderModules(final List<ModuleBuilder> modules) {
524 final LinkedHashMap<String, TreeMap<Date, ModuleBuilder>> result = new LinkedHashMap<>();
525 for (final ModuleBuilder builder : modules) {
526 if (builder == null) {
529 final String builderName = builder.getName();
530 Date builderRevision = builder.getRevision();
531 if (builderRevision == null) {
532 builderRevision = new Date(0L);
534 TreeMap<Date, ModuleBuilder> builderByRevision = result.get(builderName);
535 if (builderByRevision == null) {
536 builderByRevision = new TreeMap<>();
537 builderByRevision.put(builderRevision, builder);
538 result.put(builderName, builderByRevision);
540 builderByRevision.put(builderRevision, builder);
547 * Find {@code main} dependencies from {@code other} and add them to
555 * collection to fill up
557 private void filterImports(final ModuleBuilder main, final Collection<ModuleBuilder> other,
558 final Collection<ModuleBuilder> filtered) {
559 Map<String, ModuleImport> imports = main.getImports();
561 // if this is submodule, add parent to filtered and pick its imports
562 if (main.isSubmodule()) {
563 TreeMap<Date, ModuleBuilder> dependencies = new TreeMap<>();
564 for (ModuleBuilder mb : other) {
565 if (mb.getName().equals(main.getBelongsTo())) {
566 dependencies.put(mb.getRevision(), mb);
569 ModuleBuilder parent = dependencies.get(dependencies.firstKey());
570 filtered.add(parent);
571 imports.putAll(parent.getImports());
574 for (ModuleImport mi : imports.values()) {
575 for (ModuleBuilder builder : other) {
576 if (mi.getModuleName().equals(builder.getModuleName())) {
577 if (mi.getRevision() == null) {
578 if (!filtered.contains(builder)) {
579 filtered.add(builder);
580 filterImports(builder, other, filtered);
583 if (mi.getRevision().equals(builder.getRevision())) {
584 if (!filtered.contains(builder)) {
585 filtered.add(builder);
586 filterImports(builder, other, filtered);
595 private Map<ByteSource, ParseTree> parseYangSources(final Collection<ByteSource> sources) throws IOException,
596 YangSyntaxErrorException {
597 final Map<ByteSource, ParseTree> trees = new HashMap<>();
598 for (ByteSource source : sources) {
599 trees.put(source, parseYangSource(source));
604 private YangContext parseYangSource(final ByteSource source) throws IOException, YangSyntaxErrorException {
605 try (InputStream stream = source.openStream()) {
606 final ANTLRInputStream input = new ANTLRInputStream(stream);
607 final YangLexer lexer = new YangLexer(input);
608 final CommonTokenStream tokens = new CommonTokenStream(lexer);
609 final YangParser parser = new YangParser(tokens);
610 parser.removeErrorListeners();
612 final YangErrorListener errorListener = new YangErrorListener();
613 parser.addErrorListener(errorListener);
615 final YangContext result = parser.yang();
616 errorListener.validate();
623 * Mini parser: This parsing context does not validate full YANG module,
624 * only parses header up to the revisions and imports.
626 * @see org.opendaylight.yangtools.yang.parser.impl.util.YangModelDependencyInfo
628 public static YangContext parseStreamWithoutErrorListeners(final InputStream yangStream) {
629 YangContext result = null;
631 final ANTLRInputStream input = new ANTLRInputStream(yangStream);
632 final YangLexer lexer = new YangLexer(input);
633 final CommonTokenStream tokens = new CommonTokenStream(lexer);
634 final YangParser parser = new YangParser(tokens);
635 parser.removeErrorListeners();
636 result = parser.yang();
637 } catch (IOException e) {
638 LOG.warn("Exception while reading yang file: " + yangStream, e);
644 * Creates builder-to-module map based on given modules. Method first
645 * resolve unresolved type references, instantiate groupings through uses
646 * statements and perform augmentation.
648 * Node resolving must be performed in following order:
651 * unresolved type references</li>
653 * uses in groupings</li>
655 * uses in other nodes</li>
662 * @return modules mapped on their builders
664 private Map<ModuleBuilder, Module> build(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
665 resolveDirtyNodes(modules);
666 resolveAugmentsTargetPath(modules);
667 resolveUsesTargetGrouping(modules);
668 resolveUsesForGroupings(modules);
669 resolveUsesForNodes(modules);
670 resolveAugments(modules);
671 resolveIdentities(modules);
672 resolveDeviations(modules);
675 final Map<ModuleBuilder, Module> result = new LinkedHashMap<>();
676 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
677 for (Map.Entry<Date, ModuleBuilder> childEntry : entry.getValue().entrySet()) {
678 final ModuleBuilder moduleBuilder = childEntry.getValue();
679 final Module module = moduleBuilder.build();
680 result.put(moduleBuilder, module);
687 * Resolve all unresolved type references.
692 private void resolveDirtyNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
693 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
694 for (Map.Entry<Date, ModuleBuilder> childEntry : entry.getValue().entrySet()) {
695 final ModuleBuilder module = childEntry.getValue();
696 resolveUnknownNodes(modules, module);
697 resolveDirtyNodes(modules, module);
703 * Search for dirty nodes (node which contains UnknownType) and resolve
707 * all available modules
711 private void resolveDirtyNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
712 final Set<TypeAwareBuilder> dirtyNodes = module.getDirtyNodes();
713 if (!dirtyNodes.isEmpty()) {
714 for (TypeAwareBuilder nodeToResolve : dirtyNodes) {
715 if (nodeToResolve instanceof UnionTypeBuilder) {
716 // special handling for union types
717 resolveTypeUnion((UnionTypeBuilder) nodeToResolve, modules, module);
718 } else if (nodeToResolve.getTypedef() instanceof IdentityrefTypeBuilder) {
719 // special handling for identityref types
720 IdentityrefTypeBuilder idref = (IdentityrefTypeBuilder) nodeToResolve.getTypedef();
721 IdentitySchemaNodeBuilder identity = findBaseIdentity(modules, module, idref.getBaseString(),
723 if (identity == null) {
724 throw new YangParseException(module.getName(), idref.getLine(), "Failed to find base identity");
726 idref.setBaseIdentity(identity);
727 nodeToResolve.setType(idref.build());
729 resolveType(nodeToResolve, modules, module);
736 * Traverse through augmentations of modules and fix their child nodes
742 private void resolveAugmentsTargetPath(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
743 // collect augments from all loaded modules
744 final List<AugmentationSchemaBuilder> allAugments = new ArrayList<>();
745 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
746 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
747 allAugments.addAll(inner.getValue().getAllAugments());
751 for (AugmentationSchemaBuilder augment : allAugments) {
752 setCorrectAugmentTargetPath(modules, augment);
757 * Find augment target and set correct schema path for all its child nodes.
764 private void setCorrectAugmentTargetPath(final Map<String, TreeMap<Date, ModuleBuilder>> modules,
765 final AugmentationSchemaBuilder augment) {
766 ModuleBuilder module = BuilderUtils.getParentModule(augment);
767 Iterable<QName> oldPath = augment.getTargetPath().getPathFromRoot();
768 List<QName> newPath = new ArrayList<>();
770 Builder parent = augment.getParent();
771 if (parent instanceof UsesNodeBuilder) {
772 DataNodeContainerBuilder usesParent = ((UsesNodeBuilder) parent).getParent();
773 newPath.addAll(usesParent.getPath().getPath());
775 QName baseQName = usesParent.getQName();
776 final QNameModule qnm;
778 if (baseQName == null) {
779 ModuleBuilder m = BuilderUtils.getParentModule(usesParent);
780 qnm = m.getQNameModule();
781 prefix = m.getPrefix();
783 qnm = baseQName.getModule();
784 prefix = baseQName.getPrefix();
787 for (QName qn : oldPath) {
788 newPath.add(QName.create(qnm, prefix, qn.getLocalName()));
791 for (QName qn : oldPath) {
792 QNameModule qnm = module.getQNameModule();
793 String localPrefix = qn.getPrefix();
794 if (localPrefix != null && !localPrefix.isEmpty()) {
795 ModuleBuilder currentModule = BuilderUtils.getModuleByPrefix(module, localPrefix);
796 if (currentModule == null) {
797 throw new YangParseException(module.getName(), augment.getLine(), "Module with prefix "
798 + localPrefix + " not found.");
800 qnm = currentModule.getQNameModule();
802 newPath.add(new QName(qnm.getNamespace(), qnm.getRevision(), localPrefix, qn.getLocalName()));
805 augment.setTargetNodeSchemaPath(SchemaPath.create(newPath, true));
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_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, 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);
1104 if (target == null) {
1105 resolveUsesWithContext(usesNode);
1106 usesNode.setResolved(true);
1107 for (AugmentationSchemaBuilder augment : usesNode.getAugmentations()) {
1108 resolveUsesAugment(augment, module, modules);
1111 parent.getChildNodeBuilders().addAll(target.instantiateChildNodes(parent));
1112 parent.getTypeDefinitionBuilders().addAll(target.instantiateTypedefs(parent));
1113 parent.getGroupingBuilders().addAll(target.instantiateGroupings(parent));
1114 parent.getUnknownNodes().addAll(target.instantiateUnknownNodes(parent));
1115 usesNode.setResolved(true);
1116 for (AugmentationSchemaBuilder augment : usesNode.getAugmentations()) {
1117 resolveUsesAugment(augment, module, modules);
1120 GroupingUtils.performRefine(usesNode);
1125 * Copy target grouping child nodes to current location with new namespace.
1128 * uses node to resolve
1130 private void resolveUsesWithContext(final UsesNodeBuilder usesNode) {
1131 final int line = usesNode.getLine();
1132 DataNodeContainerBuilder parent = usesNode.getParent();
1133 ModuleBuilder module = BuilderUtils.getParentModule(parent);
1134 SchemaPath parentPath;
1136 final QName parentQName;
1137 if (parent instanceof AugmentationSchemaBuilder || parent instanceof ModuleBuilder) {
1138 parentQName = QName.create(module.getQNameModule(), module.getPrefix(), "dummy");
1139 if (parent instanceof AugmentationSchemaBuilder) {
1140 parentPath = ((AugmentationSchemaBuilder) parent).getTargetNodeSchemaPath();
1142 parentPath = parent.getPath();
1145 parentQName = parent.getQName();
1146 parentPath = parent.getPath();
1149 GroupingDefinition gd = usesNode.getGroupingDefinition();
1151 Set<DataSchemaNodeBuilder> childNodes = wrapChildNodes(module.getModuleName(), line, gd.getChildNodes(),
1152 parentPath, parentQName);
1153 parent.getChildNodeBuilders().addAll(childNodes);
1154 for (DataSchemaNodeBuilder childNode : childNodes) {
1155 setNodeAddedByUses(childNode);
1158 Set<TypeDefinitionBuilder> typedefs = wrapTypedefs(module.getModuleName(), line, gd, parentPath, parentQName);
1159 parent.getTypeDefinitionBuilders().addAll(typedefs);
1160 for (TypeDefinitionBuilder typedef : typedefs) {
1161 setNodeAddedByUses(typedef);
1164 Set<GroupingBuilder> groupings = wrapGroupings(module.getModuleName(), line, usesNode.getGroupingDefinition()
1165 .getGroupings(), parentPath, parentQName);
1166 parent.getGroupingBuilders().addAll(groupings);
1167 for (GroupingBuilder gb : groupings) {
1168 setNodeAddedByUses(gb);
1171 List<UnknownSchemaNodeBuilderImpl> unknownNodes = wrapUnknownNodes(module.getModuleName(), line,
1172 gd.getUnknownSchemaNodes(), parentPath, parentQName);
1173 parent.getUnknownNodes().addAll(unknownNodes);
1174 for (UnknownSchemaNodeBuilder un : unknownNodes) {
1175 un.setAddedByUses(true);
1180 * Try to find extension describing this unknown node and assign it to
1181 * unknown node builder.
1184 * all loaded modules
1188 private void resolveUnknownNodes(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
1189 for (UnknownSchemaNodeBuilder usnb : module.getAllUnknownNodes()) {
1190 QName nodeType = usnb.getNodeType();
1191 ModuleBuilder dependentModuleBuilder = BuilderUtils.getModuleByPrefix(module, nodeType.getPrefix());
1192 ExtensionBuilder extBuilder = findExtBuilder(nodeType.getLocalName(),
1193 dependentModuleBuilder.getAddedExtensions());
1194 if (extBuilder == null) {
1195 ExtensionDefinition extDef = findExtDef(nodeType.getLocalName(), dependentModuleBuilder.getExtensions());
1196 if (extDef == null) {
1198 "Error in module {} at line {}: Failed to resolve node {}: no such extension definition found.",
1199 module.getName(), usnb.getLine(), usnb);
1201 usnb.setNodeType(new QName(extDef.getQName().getNamespace(), extDef.getQName().getRevision(),
1202 nodeType.getPrefix(), extDef.getQName().getLocalName()));
1203 usnb.setExtensionDefinition(extDef);
1206 usnb.setNodeType(new QName(extBuilder.getQName().getNamespace(), extBuilder.getQName().getRevision(),
1207 nodeType.getPrefix(), extBuilder.getQName().getLocalName()));
1208 usnb.setExtensionBuilder(extBuilder);
1213 private ExtensionBuilder findExtBuilder(final String name, final Collection<ExtensionBuilder> extensions) {
1214 for (ExtensionBuilder extension : extensions) {
1215 if (extension.getQName().getLocalName().equals(name)) {
1222 private ExtensionDefinition findExtDef(final String name, final Collection<ExtensionDefinition> extensions) {
1223 for (ExtensionDefinition extension : extensions) {
1224 if (extension.getQName().getLocalName().equals(name)) {
1232 * Traverse through modules and resolve their deviation statements.
1235 * all loaded modules
1237 private void resolveDeviations(final Map<String, TreeMap<Date, ModuleBuilder>> modules) {
1238 for (Map.Entry<String, TreeMap<Date, ModuleBuilder>> entry : modules.entrySet()) {
1239 for (Map.Entry<Date, ModuleBuilder> inner : entry.getValue().entrySet()) {
1240 ModuleBuilder b = inner.getValue();
1241 resolveDeviation(modules, b);
1247 * Traverse through module and resolve its deviation statements.
1250 * all loaded modules
1252 * module in which resolve deviations
1254 private void resolveDeviation(final Map<String, TreeMap<Date, ModuleBuilder>> modules, final ModuleBuilder module) {
1255 for (DeviationBuilder dev : module.getDeviationBuilders()) {
1256 SchemaPath targetPath = dev.getTargetPath();
1257 Iterable<QName> path = targetPath.getPathFromRoot();
1258 QName q0 = path.iterator().next();
1259 String prefix = q0.getPrefix();
1260 if (prefix == null) {
1261 prefix = module.getPrefix();
1264 ModuleBuilder dependentModuleBuilder = BuilderUtils.getModuleByPrefix(module, prefix);
1265 processDeviation(dev, dependentModuleBuilder, path, module);
1270 * Correct deviation target path in deviation builder.
1274 * @param dependentModuleBuilder
1275 * module containing deviation target
1277 * current deviation target path
1281 private void processDeviation(final DeviationBuilder dev, final ModuleBuilder dependentModuleBuilder,
1282 final Iterable<QName> path, final ModuleBuilder module) {
1283 final int line = dev.getLine();
1284 Builder currentParent = dependentModuleBuilder;
1286 for (QName q : path) {
1287 if (currentParent == null) {
1288 throw new YangParseException(module.getName(), line, FAIL_DEVIATION_TARGET);
1290 String name = q.getLocalName();
1291 if (currentParent instanceof DataNodeContainerBuilder) {
1292 currentParent = ((DataNodeContainerBuilder) currentParent).getDataChildByName(name);
1296 if (!(currentParent instanceof SchemaNodeBuilder)) {
1297 throw new YangParseException(module.getName(), line, FAIL_DEVIATION_TARGET);
1299 dev.setTargetPath(((SchemaNodeBuilder) currentParent).getPath());