[antlr-interest] newbie faces unexpected tokens
Mo
m.axmed at gmail.com
Tue Jul 11 10:45:07 PDT 2006
Hi all,
i'm an antlr newbie and realise it has probably been posted before,
but i cant find much
i'm trying to read strings in the form of: foo.bar.foo and parse
them into a tree structure for later and have the following simple
grammar definitions
in the lexer
DOT : '.' ;
IDENT
options {testLiterals=true;}
: ('a'..'z'|'A'..'Z') ('a'..'z'|'A'..'Z'|'0'..'9')*
;
and in the parser an simple test case
event
: "on"^ IDENT LBRACE!
symbol SEMI!
RBRACE!
;
symbol
: IDENT (DOT^ IDENT )*
;
however any attempt at reading: foo.bar.foo;
returns the following error
unexpected char: 'b'
using
symbol
: IDENT ("."^ IDENT )*
;
returns
expecting SEMI, found 'barfoo'
coincidentally if i replace the DOT in the symbol definition with
something else i.e. COMMA it works ...
could anybody be kind enough to point out were i'm being stupid here !
your time and help is much appreciated --
cheers
mo
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