parser: add nullables
authorJean Privat <jean@pryen.org>
Wed, 10 Jun 2009 20:21:18 +0000 (16:21 -0400)
committerJean Privat <jean@pryen.org>
Wed, 24 Jun 2009 20:01:52 +0000 (16:01 -0400)
commited5b830d502082736fe070c8512fa45e3f1f3048
tree92646e698f33fb85c4310aef7a7aa0245b30ad1b
parentb1b4ebb08a47bc8707351bbb87c3d49dc8e8adcb
parser: add nullables

add 'nullable' and 'isset' keywords.
add '.as(not null)' expression

Signed-off-by: Jean Privat <jean@pryen.org>
src/parser/lexer.nit
src/parser/nit.sablecc3xx
src/parser/parser.nit
src/parser/parser_abs.nit
src/parser/parser_nodes.nit
src/parser/parser_prod.nit
src/parser/parser_tables.nit