Because in this case, defmacro is used as a template in nim.
$ sbcl
This is SBCL 1.5.5, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.
SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses. See the CREDITS and COPYING files in the
distribution for more information.
* (defmacro itr(ixx c1xx c2xx &rest body)
`(loop for ,ixx from ,c1xx to ,c2xx do
(format t "~a- " ,ixx) ,@body))
(itr i 0 3 (format t "Hello, world~%")
(format t "End~%"))ITR
*
0- Hello, world
End
1- Hello, world
End
2- Hello, world
End
3- Hello, world
End
NIL
* $
$ ed tm.nim
tm.nim: No such file or directory
a
template itr(ixx,c1xx,c2xx,body:untyped):untyped =
for ixx in c1xx..c2xx:
write stdout,ixx,"- "
body
itr i,0,3:
echo "Hello, world"
echo "End"
.
w
157
q
$ nim c -r tm.nim
Hint: used config file '/usr/home/jin/src/Nim_devel/config/nim.cfg' [Conf]
Hint: used config file '/usr/home/jin/src/Nim_devel/config/config.nims'
[Conf]
Hint: system [Processing]
Hint: widestrs [Processing]
Hint: io [Processing]
Hint: tm [Processing]
CC: stdlib_io.nim
CC: stdlib_system.nim
CC: tm.nim
Hint: [Link]
Hint: operation successful (21814 lines compiled; 1.067 sec total;
24.379MiB peakmem; Debug Build) [SuccessX]
Hint: /usr/home/jin/tmp/tm [Exec]
0- Hello, world
End
1- Hello, world
End
2- Hello, world
End
3- Hello, world
End
Run
