[antlr-interest] tutorials ?

[Hugo]

hi,
i'm a little lost regarding all functionnalities of antlr..

please could you indicate me an tutorial or some example
of a grammar language which could parse and immediatly
execute some code.(at the same time of ast creation.)
specially focus of the management of

'if' cond stat+ 'else' stat+ 'end'. (where stat can be an other 
'if'..'else'..'end'.  etc...) .


thanks in advance for helping me