2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.parser.stmt.rfc6020;
11 import java.io.IOException;
12 import java.io.InputStream;
13 import java.net.URISyntaxException;
14 import org.antlr.v4.runtime.ANTLRInputStream;
15 import org.antlr.v4.runtime.CommonTokenStream;
16 import org.antlr.v4.runtime.tree.ParseTreeWalker;
17 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementLexer;
18 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser;
19 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser.StatementContext;
20 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
21 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
22 import org.opendaylight.yangtools.yang.parser.impl.YangErrorListener;
23 import org.opendaylight.yangtools.yang.parser.impl.YangStatementParserListenerImpl;
24 import org.opendaylight.yangtools.yang.parser.spi.source.PrefixToModule;
25 import org.opendaylight.yangtools.yang.parser.spi.source.QNameToStatementDefinition;
26 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
27 import org.opendaylight.yangtools.yang.parser.spi.source.StatementWriter;
28 import org.opendaylight.yangtools.yang.parser.util.NamedFileInputStream;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
34 * This class represents implementation of StatementStreamSource
35 * in order to emit YANG statements using supplied StatementWriter
38 public final class YangStatementSourceImpl implements StatementStreamSource {
40 private YangStatementParserListenerImpl yangStatementModelParser;
41 private YangStatementParser.StatementContext statementContext;
42 private ParseTreeWalker walker;
43 private String sourceName;
44 // private String source;
45 // private InputStream sourceStream;
46 private static final Logger LOG = LoggerFactory.getLogger(YangStatementSourceImpl.class);
48 public YangStatementSourceImpl(final String fileName, boolean isAbsolute) {
50 statementContext = parseYangSource(loadFile(fileName, isAbsolute));
51 walker = new ParseTreeWalker();
52 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
53 } catch (Exception e) {
58 public YangStatementSourceImpl(final InputStream inputStream) {
60 statementContext = parseYangSource(inputStream);
61 walker = new ParseTreeWalker();
62 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
63 } catch (Exception e) {
68 public YangStatementSourceImpl(SourceIdentifier identifier, YangStatementParser.StatementContext statementContext) {
70 this.statementContext = statementContext;
71 this.sourceName = identifier.getName();
72 walker = new ParseTreeWalker();
73 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
74 } catch (Exception e) {
80 public void writePreLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef) {
81 yangStatementModelParser.setAttributes(writer, stmtDef);
82 walker.walk(yangStatementModelParser, statementContext);
86 public void writeLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule preLinkagePrefixes) {
87 yangStatementModelParser.setAttributes(writer, stmtDef, preLinkagePrefixes);
88 walker.walk(yangStatementModelParser, statementContext);
92 public void writeLinkageAndStatementDefinitions(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule prefixes) {
93 yangStatementModelParser.setAttributes(writer, stmtDef, prefixes);
94 walker.walk(yangStatementModelParser, statementContext);
98 public void writeFull(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule prefixes) {
99 yangStatementModelParser.setAttributes(writer, stmtDef, prefixes);
100 walker.walk(yangStatementModelParser, statementContext);
103 private NamedFileInputStream loadFile(final String fileName, boolean isAbsolute) throws URISyntaxException,
105 //TODO: we need absolute path first!
106 return isAbsolute ? new NamedFileInputStream(new File(fileName), fileName) : new NamedFileInputStream(new File
107 (getClass().getResource(fileName).toURI()), fileName);
109 // final File file = new File(fileName);
110 // final ByteSource byteSource = BuilderUtils.fileToByteSource(file);
111 // source = byteSource.asCharSource(Charsets.UTF_8).read();
112 // return isAbsolute ? new NamedFileInputStream(file, fileName) : new NamedFileInputStream(new File
113 // (getClass().getResource(fileName).toURI()), fileName);
116 private YangStatementParser.StatementContext parseYangSource(final InputStream stream) throws IOException,
117 YangSyntaxErrorException {
118 final YangStatementLexer lexer = new YangStatementLexer(new ANTLRInputStream(stream));
119 final CommonTokenStream tokens = new CommonTokenStream(lexer);
120 final YangStatementParser parser = new YangStatementParser(tokens);
121 //disconnect from console error output
122 parser.removeErrorListeners();
124 final YangErrorListener errorListener = new YangErrorListener();
125 parser.addErrorListener(errorListener);
127 if(stream instanceof NamedFileInputStream) {
128 sourceName = stream.toString();
133 // sourceStream = stream;
134 // sourceName = parser.getSourceName();
136 // if (sourceName == null) {
137 // sourceName = stream.toString();
139 final StatementContext result = parser.statement();
140 errorListener.validate();
145 public YangStatementParser.StatementContext getYangAST() {
146 return statementContext;
150 public String toString() {
154 // public InputStream getSourceStream() {
155 // return sourceStream;
158 private static void logError(Exception e) {
159 if (e instanceof YangSyntaxErrorException) {
160 LOG.error(((YangSyntaxErrorException) e).getFormattedMessage(), e);
162 LOG.error(e.getMessage(), e);