John Cohen wrote:
The last suggestion worked great (thanks!). But still, I still have a small
problem. It won't accept more than one 'statement'. I know why, but can't
fix it. Take a look:
$ ./a.out
7 + 9 + 7 + 3 / (5 + 7);
23.25
3 + 3 + 3;
Fatal Error: Parser is hopelessly lost...
Now, I know why, because my grammar look like this:
in ::= stmt ENDLINE.
stmt(A) ::= expression. { printf("%u\n", a); }
expression(A) ::= INTEGER(B). { A = B; }
expression(A) ::= expression(B) PPLUS expression(C). { A = B + C; }
expression(A) ::= expression(B) PSUB expression(C). { A = B - C; }
...etc...
Now its obvious why that will only accept one statement, but how to fix it?
SQLite doesn't offer any help here because the parser seems to be
reinitialized each statement, but that really isn't an option in my case.
Is there any way? In bison, you can simply make the start token right
recursive (like in my last message):
in ::= in stmt ENDLINE.
There's a bug in lemon such that it doesn't like the primary
non-terminal to be recursive. So do this:
main ::= in.
Then in addition to what you have it should work.
--
D. Richard Hipp -- [EMAIL PROTECTED] -- 704.948.4565
