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
|
// This file is part of PyANTLR. See LICENSE.txt for license
// details..........Copyright (C) Wolfgang Haefelinger, 2004.
//
// $Id$
header "Lexer.__main__" {
// main - create and run lexer from stdin
if __name__ == "__main__":
import sys
import antlr
import rulefilter_l
// create lexer - shall read from stdin
L = rulefilter_l.Lexer()
try:
token = L.nextToken()
while not token.isEOF():
print token
token = L.nextToken()
except antlr.TokenStreamException, e:
print "error: exception caught while lexing:", e
// end of main
}
options {
language=Python;
}
class rulefilter_l extends Lexer;
options {
k=2;
filter=IGNORE;
charVocabulary = '\3'..'\177';
}
P : "<p>" ;
BR: "<br>" ;
protected
IGNORE
: '<' (~'>')* '>' { print "invalid tag: "+ $getText}
| ( "\r\n" | '\r' | '\n' ) { $newline }
| .
;
|
