Fcalva/cyclone
1
0
Fork 0
mirror of https://github.com/justinethier/cyclone.git synced 2025-05-23 20:15:05 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Issue #331 - Ensure map evaluates in order

Browse source 
Reverse so everything is evaluated in order, then reverse again so final results are in order.
This commit is contained in:
Justin Ethier 2019-08-07 13:29:43 -04:00
parent 7420b34f84
commit f211d350e0
1 changed files with 11 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
scheme/eval.sld
View file

@ -614,17 +614,22 @@
rename-env
local-renamed))))))
(cond
;; special case - a begin can splice in definitions, so we can't use the
;; built-in macro that just expands them in a new lambda scope. Instead
;; we nest them below within the same lexical environment.
;; special case - begin can splice in definitions, so we can't use the
;; built-in macro that just expands them within a new lambda scope.
;; Instead we nest them below within the same lexical environment.
((eq? 'begin op)
;(newline)
;(display "/* ")
;(write (list exp))
;(display "*/ ")
(let ((fncs (map (lambda (expr)
(analyze expr a-env rename-env local-renamed))
(cdr exp))))
(let ((fncs
;; Our map starts from the end, we reverse
;; so everything is evaluated in order, then
;; reverse again so results are in order
(reverse
(map (lambda (expr)
(analyze expr a-env rename-env local-renamed))
(reverse (cdr exp))))))
(lambda (env)
(foldl (lambda (fnc _) (fnc env)) #f fncs))))
;; compiled macro