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Issue #154 - Handle many top-level prog imports

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Justin Ethier 2017-02-03 00:51:03 -05:00
parent ca048d5538
commit ca3074e6bc
1 changed files with 35 additions and 7 deletions
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42
cyclone.scm
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@ -80,13 +80,11 @@
input-program)))
(reverse includes))))) ;; Append code in same order as the library's includes
(else
;; Handle import, if present
(cond
((tagged-list? 'import (car input-program))
(set! imports (cdar input-program))
(set! input-program (cdr input-program))
;(error (list 'imports (cdar input-program)))
))
;; Handle imports, if present
(let ((reduction (import-reduction input-program)))
(set! imports (car reduction))
(set! input-program (cdr reduction)))
;; Handle any C headers
(let ((headers (lib:include-c-headers `(dummy dummy ,@input-program))))
(cond
@ -285,6 +283,36 @@
src-file)
(return '())))) ;; No codes to return
;; Read top-level imports from a program and return a cons of:
;; - imports
;; - remaining program
(define (import-reduction expr)
(let ((results
(foldl
(lambda (ex accum)
(define (process e)
(cond
((tagged-list? 'import e)
(cons (cons (cdr e) (car accum)) (cdr accum)))
(else
(cons (car accum) (cons e (cdr accum))))))
(cond
;; TODO: this part does not work yet, would need to load
;; the base macro environment first
;((tagged-list? 'cond-expand ex)
; (let ((ex* (expand ex (macro:get-env) '())))
; (trace:info `(DEBUG ,ex* ,ex))
; (if (tagged-list? 'import ex*)
; (process ex*)
; (process ex))))
(else
(process ex))))
(cons '() '())
expr)))
(cons
(apply append (reverse (car results)))
(reverse (cdr results)))))
;; TODO: longer-term, will be used to find where cyclone's data is installed
(define (get-data-path)
".")