engine: handle new attribute annotation `is_optional`
authorJean Privat <jean@pryen.org>
Fri, 26 Feb 2016 21:01:29 +0000 (16:01 -0500)
committerJean Privat <jean@pryen.org>
Fri, 26 Feb 2016 21:01:29 +0000 (16:01 -0500)
commitfee4791d17667f413a6eacf11f293a56bcfdb986
treea043b208a9dd5cee1613f5d858046b6f896b13b0
parent4c3bd543a5f57741acf76d4bbcb7459a52a44626
engine: handle new attribute annotation `is_optional`

Signed-off-by: Jean Privat <jean@pryen.org>
src/compiler/abstract_compiler.nit
src/interpreter/naive_interpreter.nit