2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.parser.rfc7950.repo;
10 import static com.google.common.base.Verify.verifyNotNull;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import java.io.IOException;
15 import java.io.Reader;
16 import org.antlr.v4.runtime.CharStreams;
17 import org.antlr.v4.runtime.CommonTokenStream;
18 import org.opendaylight.yangtools.concepts.AbstractSimpleIdentifiable;
19 import org.opendaylight.yangtools.yang.common.QName;
20 import org.opendaylight.yangtools.yang.common.QNameModule;
21 import org.opendaylight.yangtools.yang.common.YangVersion;
22 import org.opendaylight.yangtools.yang.ir.IRKeyword;
23 import org.opendaylight.yangtools.yang.ir.IRStatement;
24 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
25 import org.opendaylight.yangtools.yang.model.api.meta.StatementSourceReference;
26 import org.opendaylight.yangtools.yang.model.api.source.SourceIdentifier;
27 import org.opendaylight.yangtools.yang.model.api.source.YangTextSource;
28 import org.opendaylight.yangtools.yang.model.spi.source.YangIRSource;
29 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementLexer;
30 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser;
31 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser.FileContext;
32 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser.StatementContext;
33 import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
34 import org.opendaylight.yangtools.yang.parser.rfc7950.antlr.CompactYangStatementLexer;
35 import org.opendaylight.yangtools.yang.parser.rfc7950.antlr.IRSupport;
36 import org.opendaylight.yangtools.yang.parser.spi.source.PrefixResolver;
37 import org.opendaylight.yangtools.yang.parser.spi.source.QNameToStatementDefinition;
38 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
39 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
40 import org.opendaylight.yangtools.yang.parser.spi.source.StatementWriter;
43 * This class represents implementation of StatementStreamSource in order to emit YANG statements using supplied
47 public final class YangStatementStreamSource extends AbstractSimpleIdentifiable<SourceIdentifier>
48 implements StatementStreamSource {
49 private final IRStatement rootStatement;
50 private final String sourceName;
52 private YangStatementStreamSource(final SourceIdentifier sourceId, final IRStatement rootStatement,
53 final String sourceName) {
55 this.rootStatement = requireNonNull(rootStatement);
56 this.sourceName = sourceName;
60 * Create a {@link YangStatementStreamSource} for a {@link YangTextSource}.
62 * @param source YangTextSchemaSource, must not be null
63 * @return A new {@link YangStatementStreamSource}
64 * @throws IOException When we fail to read the source
65 * @throws YangSyntaxErrorException If the source fails basic parsing
67 public static YangStatementStreamSource create(final YangTextSource source)
68 throws IOException, YangSyntaxErrorException {
69 return new YangStatementStreamSource(source.sourceId(),
70 IRSupport.createStatement(parseYangSource(source)), source.symbolicName());
74 * Create a {@link YangStatementStreamSource} for a {@link YangIRSource}.
76 * @param source YangTextSchemaSource, must not be null
77 * @return A new {@link YangStatementStreamSource}
78 * @throws NullPointerException if {@code source} is null
80 public static YangStatementStreamSource create(final YangIRSource source) {
81 return create(source.sourceId(), source.statement(), source.symbolicName());
84 public static YangStatementStreamSource create(final SourceIdentifier identifier, final IRStatement rootStatement,
85 final String symbolicName) {
86 return new YangStatementStreamSource(identifier, rootStatement, symbolicName);
90 public void writePreLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef) {
91 new StatementContextVisitor(sourceName, writer, stmtDef, null, YangVersion.VERSION_1).visit(rootStatement);
95 public void writeLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef,
96 final PrefixResolver preLinkagePrefixes, final YangVersion yangVersion) {
97 new StatementContextVisitor(sourceName, writer, stmtDef, preLinkagePrefixes, yangVersion) {
99 StatementDefinition resolveStatement(final QNameModule module, final String localName) {
100 return stmtDef.getByNamespaceAndLocalName(module.getNamespace(), localName);
102 }.visit(rootStatement);
106 public void writeLinkageAndStatementDefinitions(final StatementWriter writer,
107 final QNameToStatementDefinition stmtDef, final PrefixResolver prefixes, final YangVersion yangVersion) {
108 new StatementContextVisitor(sourceName, writer, stmtDef, prefixes, yangVersion).visit(rootStatement);
112 public void writeFull(final StatementWriter writer, final QNameToStatementDefinition stmtDef,
113 final PrefixResolver prefixes, final YangVersion yangVersion) {
114 new StatementContextVisitor(sourceName, writer, stmtDef, prefixes, yangVersion) {
116 QName getValidStatementDefinition(final IRKeyword keyword, final StatementSourceReference ref) {
117 final QName ret = super.getValidStatementDefinition(keyword, ref);
119 throw new SourceException(ref, "%s is not a YANG statement or use of extension.",
120 keyword.asStringDeclaration());
124 }.visit(rootStatement);
127 IRStatement rootStatement() {
128 return rootStatement;
131 static StatementContext parseYangSource(final YangTextSource source)
132 throws IOException, YangSyntaxErrorException {
133 try (var reader = source.openStream()) {
134 return parseYangSource(source.sourceId(), reader);
138 private static StatementContext parseYangSource(final SourceIdentifier sourceId, final Reader stream)
139 throws IOException, YangSyntaxErrorException {
140 final YangStatementLexer lexer = new CompactYangStatementLexer(CharStreams.fromReader(stream));
141 final YangStatementParser parser = new YangStatementParser(new CommonTokenStream(lexer));
142 // disconnect from console error output
143 lexer.removeErrorListeners();
144 parser.removeErrorListeners();
146 final YangErrorListener errorListener = new YangErrorListener(sourceId);
147 lexer.addErrorListener(errorListener);
148 parser.addErrorListener(errorListener);
150 final FileContext result = parser.file();
151 errorListener.validate();
152 return verifyNotNull(result.statement());