target_var.jam

来自「Boost provides free peer-reviewed portab」· JAM 代码 · 共 17 行

#~ Copyright 2006 Rene Rivera.
#~ Distributed under the Boost Software License, Version 1.0.
#~ (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)

ECHO --- Testing var on target semantics... ;

v on a = 1 ;
v on b = 1 2 ;
v on c = 1 2 3 ;
v on d ?= 1 2 3 4 ;
v on d ?= 5 6 7 8 ;
v on a ?= 2 ;
assert [ on a return $(v) ] : (==) : 1 ;
assert [ on b return $(v) ] : (==) : 1 2 ;
assert [ on c return $(v) ] : (==) : 1 2 3 ;
assert [ on d return $(v) ] : (==) : 1 2 3 4 ;