[antlr-interest] How to interpret the text DFA
yushang
yusunn at gmail.com
Thu Nov 10 09:50:19 PST 2011
Hi , everyone,
I'm testing the following grammar
INT
: ('0'..'9')+
;
FLOAT
: ('0'..'9')* '.' INT
;
and get the follwing DFAs
DFA d=1
.s0-'0'..'9'->:s2=>1
.s0-<EOT>->:s1=>2
DFA d=2
.s0-'.'->:s2=>2
.s0-'0'..'9'->:s1=>1
DFA d=3
.s0-'.'->:s3=>2
.s0-'0'..'9'->.s1
.s1-'.'->:s3=>2
.s1-'0'..'9'->.s1
.s1-<EOT>->:s2=>1
from the lexer code , I can just assemble the last one (d=3) what's purpose
of the former 2? Many thanks.
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