1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*******************************************************************************
* Copyright (c) 2005, 2007 committers of openArchitectureWare and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* committers of openArchitectureWare - initial API and implementation
*******************************************************************************/
package org.eclipse.internal.xpand2.parser;
import java.io.IOException;
import java.io.Reader;
import org.antlr.runtime.ANTLRReaderStream;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.RecognitionException;
import org.eclipse.internal.xpand2.ast.Template;
import org.eclipse.internal.xtend.xtend.parser.ErrorHandler;
import org.eclipse.internal.xtend.xtend.parser.ParseException;
import org.eclipse.internal.xtend.xtend.parser.SyntaxError;
import org.eclipse.internal.xtend.xtend.parser.XtendError;
public final class XpandParseFacade {
private XpandParseFacade() {
}
public static Template file(Reader r, String fileName) {
return file(r,fileName,null);
}
public static Template file(Reader r, String fileName,
ErrorHandler handler) {
ANTLRReaderStream readerStream;
try {
readerStream = new ANTLRReaderStream(r);
} catch (IOException e2) {
throw new RuntimeException(e2);
}
final ErrorHandler h = getErrorHandler(handler);
try {
return getParser(fileName, readerStream, h).template();
} catch (final RecognitionException e) {
h.handleError(createError(e, ""));
}
return null;
}
private static XpandLocationAddingParser getParser(String fileName, ANTLRReaderStream readerStream, final ErrorHandler h) {
XpandLexer lex = new XpandLexer(readerStream) {
@Override
public void reportError(RecognitionException e) {
h.handleError(createError(e, this.getErrorMessage(e, this
.getTokenNames())));
}
};
CommonTokenStream str = new CommonTokenStream();
str.setTokenSource(lex);
XpandLocationAddingParser parser = new XpandLocationAddingParser(str,
fileName) {
@Override
public void reportError(RecognitionException e) {
h.handleError(createError(e, this.getErrorMessage(e, this
.getTokenNames())));
}
};
return parser;
}
private static ErrorHandler getErrorHandler(ErrorHandler handler) {
if (handler == null)
handler = new ErrorHandler() {
public void handleError(XtendError e) {
throw new ParseException(e);
}
};
final ErrorHandler h = handler;
return h;
}
protected static XtendError createError(RecognitionException e, String string) {
if (e.token == null) {
return new SyntaxError(e.index, e.line, e.index + 1, string);
} else {
CommonToken t = (CommonToken) e.token;
return new SyntaxError(t.getStartIndex(), t.getStopIndex(), t
.getLine(), string);
}
}
}
|
