I am having inconsistent results with the antlrworks interpreter. The
following grammar gives a mismatched token exception while processing
the string part of
#include "abc"
The debugger works fine with this grammar. If I remove ESC_SEQ from the
definition of STRING, the interpreter works fine. FWIW STRING was
auto-generated from the antlrworks new grammar wizard.
grammar test;
prog: INCLUDE STRING;
INCLUDE : '#include';
STRING
: '"' ( ESC_SEQ | ~('\\'|'"') )* '"'
;
fragment
ESC_SEQ
: '\\' ('b'|'t'|'n'|'f'|'r'|'\"'|'\''|'\\')
| UNICODE_ESC
| OCTAL_ESC
;
fragment
OCTAL_ESC
: '\\' ('0'..'3') ('0'..'7') ('0'..'7')
| '\\' ('0'..'7') ('0'..'7')
| '\\' ('0'..'7')
;
fragment
UNICODE_ESC
: '\\' 'u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT
;
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