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 {
39 private static final Logger LOG = LoggerFactory.getLogger(YangStatementSourceImpl.class);
41 private YangStatementParserListenerImpl yangStatementModelParser;
42 private YangStatementParser.StatementContext statementContext;
43 private String sourceName;
45 public YangStatementSourceImpl(final String fileName, final boolean isAbsolute) {
47 statementContext = parseYangSource(loadFile(fileName, isAbsolute));
48 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
49 } catch (Exception e) {
54 public YangStatementSourceImpl(final InputStream inputStream) {
56 statementContext = parseYangSource(inputStream);
57 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
58 } catch (Exception e) {
63 public YangStatementSourceImpl(final SourceIdentifier identifier, final YangStatementParser.StatementContext statementContext) {
65 this.statementContext = statementContext;
66 this.sourceName = identifier.getName();
67 yangStatementModelParser = new YangStatementParserListenerImpl(sourceName);
68 } catch (Exception e) {
74 public void writePreLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef) {
75 yangStatementModelParser.setAttributes(writer, stmtDef);
76 ParseTreeWalker.DEFAULT.walk(yangStatementModelParser, statementContext);
80 public void writeLinkage(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule preLinkagePrefixes) {
81 yangStatementModelParser.setAttributes(writer, stmtDef, preLinkagePrefixes);
82 ParseTreeWalker.DEFAULT.walk(yangStatementModelParser, statementContext);
86 public void writeLinkageAndStatementDefinitions(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule prefixes) {
87 yangStatementModelParser.setAttributes(writer, stmtDef, prefixes);
88 ParseTreeWalker.DEFAULT.walk(yangStatementModelParser, statementContext);
92 public void writeFull(final StatementWriter writer, final QNameToStatementDefinition stmtDef, final PrefixToModule prefixes) {
93 yangStatementModelParser.setAttributes(writer, stmtDef, prefixes);
94 ParseTreeWalker.DEFAULT.walk(yangStatementModelParser, statementContext);
97 private NamedFileInputStream loadFile(final String fileName, final boolean isAbsolute) throws URISyntaxException,
99 //TODO: we need absolute path first!
100 return isAbsolute ? new NamedFileInputStream(new File(fileName), fileName) : new NamedFileInputStream(new File
101 (getClass().getResource(fileName).toURI()), fileName);
104 private YangStatementParser.StatementContext parseYangSource(final InputStream stream) throws IOException,
105 YangSyntaxErrorException {
106 final YangStatementLexer lexer = new YangStatementLexer(new ANTLRInputStream(stream));
107 final CommonTokenStream tokens = new CommonTokenStream(lexer);
108 final YangStatementParser parser = new YangStatementParser(tokens);
109 //disconnect from console error output
110 parser.removeErrorListeners();
112 final YangErrorListener errorListener = new YangErrorListener();
113 parser.addErrorListener(errorListener);
115 if (stream instanceof NamedFileInputStream) {
116 sourceName = stream.toString();
121 final StatementContext result = parser.statement();
122 errorListener.validate();
127 public YangStatementParser.StatementContext getYangAST() {
128 return statementContext;
132 public String toString() {
136 private static void logError(final Exception e) {
137 if (e instanceof YangSyntaxErrorException) {
138 LOG.error(((YangSyntaxErrorException) e).getFormattedMessage(), e);
140 LOG.error(e.getMessage(), e);