[antlr-interest] Unable to make a single token to match
ycmichelid
michel_cedric at hotmail.com
Fri Feb 8 09:11:02 PST 2002
I'm unable to make a single token to match with ANTLR 2.7.1 (java).
I get an exception during the recognition of the first token of my
grammar.
I've got one file for the parser and one for the lexer.
-rules from the parser (all java code is removed here):
options {
k = 2;
exportVocab=P;
importVocab=L;
}
debut : ALERT FUNCNAME OPENPAR ;
-rules from the lexer (rule to skip whitespaces is present but not
reproduced here):
options {
exportVocab = L;
k =6;
caseSensitive = true;
testLiterals = true;
caseSensitiveLiterals = true;
}
ALERT: "Alert";
OPENPAR : "(" ;
FUNCNAME : ('A'..'Z')( 'a'..'z' | 'A'..'Z' | '0'..'9' | '_' )+ ;
The data to parse(without double quotes:
"Alert NFSMount ("
Results of execution (functions consume() & consumeUntil() removed
from the generated java code):
> debut; > lexer mALERT; c==A
< lexer mALERT; c==
LA(1)==Alert
line 1: expecting ALERT, found 'Alert'
at antlr.Parser.match(Parser.java:180)
at AdeleParser.debut(AdeleParser.java:113)
at AdeleParser.parseFile(AdeleParser.java:66)
at AdeleParser.main(AdeleParser.java:39)
< debut; LA(1)==Alert
If I remove the ALERT rule from the lexer and replace it with the
literal "Alert" in the parser, the error message is:
line 1: expecting "Alert", found 'Alert'
Does anybody have an idea of why it's going wrong?
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