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.InputStream;
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.model.api.meta.StatementDefinition;
23 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
24 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
25 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementLexer;
26 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser;
27 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser.FileContext;
28 import org.opendaylight.yangtools.yang.parser.antlr.YangStatementParser.StatementContext;
29 import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
30 import org.opendaylight.yangtools.yang.parser.rfc7950.antlr.CompactYangStatementLexer;
31 import org.opendaylight.yangtools.yang.parser.rfc7950.antlr.IRSupport;
32 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRKeyword;
33 import org.opendaylight.yangtools.yang.parser.rfc7950.ir.IRStatement;
34 import org.opendaylight.yangtools.yang.parser.spi.source.PrefixResolver;
35 import org.opendaylight.yangtools.yang.parser.spi.source.QNameToStatementDefinition;
36 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
37 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
38 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
39 import org.opendaylight.yangtools.yang.parser.spi.source.StatementWriter;
42 * This class represents implementation of StatementStreamSource in order to emit YANG statements using supplied
45 * @author Robert Varga
48 public final class YangStatementStreamSource extends AbstractSimpleIdentifiable<SourceIdentifier>
49 implements StatementStreamSource {
50 private final IRStatement rootStatement;
51 private final String sourceName;
53 private YangStatementStreamSource(final SourceIdentifier identifier, final IRStatement rootStatement,
54 final String sourceName) {
56 this.rootStatement = requireNonNull(rootStatement);
57 this.sourceName = sourceName;
61 * Create a {@link YangStatementStreamSource} for a {@link YangTextSchemaSource}.
63 * @param source YangTextSchemaSource, must not be null
64 * @return A new {@link YangStatementStreamSource}
65 * @throws IOException When we fail to read the source
66 * @throws YangSyntaxErrorException If the source fails basic parsing
68 public static YangStatementStreamSource create(final YangTextSchemaSource source) throws IOException,
69 YangSyntaxErrorException {
70 return new YangStatementStreamSource(source.getIdentifier(),
71 IRSupport.createStatement(parseYangSource(source)), source.getSymbolicName().orElse(null));
75 * Create a {@link YangStatementStreamSource} for a {@link IRSchemaSource}.
77 * @param source YangTextSchemaSource, must not be null
78 * @return A new {@link YangStatementStreamSource}
79 * @throws NullPointerException if {@code source} is null
81 public static YangStatementStreamSource create(final IRSchemaSource source) {
82 return create(source.getIdentifier(), source.getRootStatement(), source.getSymbolicName().orElse(null));
85 public static YangStatementStreamSource create(final SourceIdentifier identifier, final IRStatement rootStatement,
86 final String symbolicName) {
87 return new YangStatementStreamSource(identifier, rootStatement, symbolicName);
91 public void writePreLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef) {
92 new StatementContextVisitor(sourceName, writer, stmtDef, null, YangVersion.VERSION_1).visit(rootStatement);
96 public void writeLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef,
97 final PrefixResolver preLinkagePrefixes, final YangVersion yangVersion) {
98 new StatementContextVisitor(sourceName, writer, stmtDef, preLinkagePrefixes, yangVersion) {
100 StatementDefinition resolveStatement(final QNameModule module, final String localName) {
101 return stmtDef.getByNamespaceAndLocalName(module.getNamespace(), localName);
103 }.visit(rootStatement);
107 public void writeLinkageAndStatementDefinitions(final StatementWriter writer,
108 final QNameToStatementDefinition stmtDef, final PrefixResolver prefixes, final YangVersion yangVersion) {
109 new StatementContextVisitor(sourceName, writer, stmtDef, prefixes, yangVersion).visit(rootStatement);
113 public void writeFull(final StatementWriter writer, final QNameToStatementDefinition stmtDef,
114 final PrefixResolver prefixes, final YangVersion yangVersion) {
115 new StatementContextVisitor(sourceName, writer, stmtDef, prefixes, yangVersion) {
117 QName getValidStatementDefinition(final IRKeyword keyword, final StatementSourceReference ref) {
118 final QName ret = super.getValidStatementDefinition(keyword, ref);
120 throw new SourceException(ref, "%s is not a YANG statement or use of extension.",
121 keyword.asStringDeclaration());
125 }.visit(rootStatement);
128 IRStatement rootStatement() {
129 return rootStatement;
132 static StatementContext parseYangSource(final YangTextSchemaSource source)
133 throws IOException, YangSyntaxErrorException {
134 try (InputStream stream = source.openStream()) {
135 return parseYangSource(source.getIdentifier(), stream);
139 private static StatementContext parseYangSource(final SourceIdentifier source, final InputStream stream)
140 throws IOException, YangSyntaxErrorException {
141 final YangStatementLexer lexer = new CompactYangStatementLexer(CharStreams.fromStream(stream));
142 final YangStatementParser parser = new YangStatementParser(new CommonTokenStream(lexer));
143 // disconnect from console error output
144 lexer.removeErrorListeners();
145 parser.removeErrorListeners();
147 final YangErrorListener errorListener = new YangErrorListener(source);
148 lexer.addErrorListener(errorListener);
149 parser.addErrorListener(errorListener);
151 final FileContext result = parser.file();
152 errorListener.validate();
153 return verifyNotNull(result.statement());