[antlr-interest] forcing parenthesis (no precedence)

[hakan eryargi]

hello,

i want to create a grammar for simple expressions and AND, OR
statements. AND's and OR's have no precedence, so i want the user to
explicitly use parenthesis if AND's and OR's mixed. how can i define
such a grammar ?

for example these are valid:
EXP
EXP & EXP
EXP | EXP | EXP
EXP & (EXP | EXP)
(EXP | EXP) & (EXP | EXP)

these are not:
EXP & EXP | EXP
EXP | EXP & EXP | EXP

please note i'm a newbea so handle with care :)

thanks,
hakan