mirror of
https://github.com/false-schemers/skint.git
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67 lines
2.8 KiB
Text
67 lines
2.8 KiB
Text
;---------------------------------------------------------------------------------------------
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; Skint k.sf precursor compiler (k.sf => k.c)
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;---------------------------------------------------------------------------------------------
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(import (only (skint hidden)
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list2? list3?))
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(define (list4? x) (and (pair? x) (list3? (cdr x))))
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(define (path-strip-directory filename)
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(let loop ([l (reverse (string->list filename))] [r '()])
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(cond [(null? l) (list->string r)]
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[(memv (car l) '(#\\ #\/ #\:)) (list->string r)]
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[else (loop (cdr l) (cons (car l) r))])))
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(define (path-strip-extension filename)
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(let ([l (reverse (string->list filename))])
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(let ([r (memv #\. l)])
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(if r (list->string (reverse (cdr r))) filename))))
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(define (module-name filename)
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(path-strip-extension (path-strip-directory filename)))
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(define *local-definitions*
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'("#ifdef NAN_BOXING" "#ifndef FLONUMS_BOXED" "#else" "#endif"))
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(define (process-top-form x oport)
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(when (and (list2? x) (symbol? (car x)) (string? (cadr x)))
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(case (car x)
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[(%definition)
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; make an exception for some conditional definitions!
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(when (member (cadr x) *local-definitions*)
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(display (cadr x) oport) (newline oport) (newline oport))]
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[(%localdef) (display (cadr x) oport) (newline oport) (newline oport)] ; does not go into n.h
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[(%include)]))) ; went into n.h
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(define (process-file sfcpath ifname . ?ofname)
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(define iport (open-input-file ifname)) ; relative to wd, not this script!
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(define oport (if (pair? ?ofname) (open-output-file (car ?ofname)) (current-output-port)))
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(define mname (module-name ifname))
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(display "/* " oport) (display mname oport)
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(display ".c -- generated via skint nsf2c.ssc " oport)
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(display (path-strip-directory ifname) oport)
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(display " */" oport) (newline oport) (newline oport)
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(let loop ([x (read iport)] [end-of-includes? #f])
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(unless (eof-object? x)
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(cond [end-of-includes?
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(process-top-form x oport)
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(loop (read iport) #t)]
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[(and (list2? x) (eq? (car x) '%include) (string? (cadr x)))
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(display "#include " oport) (write (cadr x) oport) (newline oport)
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(loop (read iport) #f)]
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[else ; switching to body forms
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(display "#include \"" oport) (display mname oport)
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(display ".h\"" oport) (newline oport) (newline oport)
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(process-top-form x oport)
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(loop (read iport) #t)])))
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(close-input-port iport)
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(if (pair? ?ofname) (close-output-port oport)))
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(define (main args)
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(cond [(list3? args) (process-file (cadr args) (caddr args))]
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[(list4? args) (process-file (cadr args) (caddr args) (cadddr args))]
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[else (error "usage: scint ksf2c.ssc SFCPATH INFILE [OUTFILE]" args)]))
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; this is not a real #! script, so call main manually
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;(main (command-line))
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