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; Copyright (c) 1993-2008 by Richard Kelsey. See file COPYING.
(define (write-c-io-call call port name . args)
(format port name)
(writec port #\()
(for-each (lambda (arg)
(cond ((string? arg)
(format port arg))
((variable? arg)
(c-variable arg port))
(else
(c-value (call-arg call arg) port))))
args)
(writec port #\)))
; stdin, stdout, and stderr cannot be variables because they may be macros in C.
(define-c-generator stdin #t
(lambda (call port indent)
(format port "stdin")))
(define-c-generator stdout #t
(lambda (call port indent)
(format port "stdout")))
(define-c-generator stderr #t
(lambda (call port indent)
(format port "stderr")))
; char eof? status
(define-c-generator read-char #f
(lambda (call port indent)
(indent-to port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(write-c-io-call call port "PS_READ_CHAR" 1 ", "
(car vars) ", " (cadr vars) ", " (caddr vars)))))
(define-c-generator peek-char #f
(lambda (call port indent)
(indent-to port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(write-c-io-call call port "PS_PEEK_CHAR" 1 ", "
(car vars) ", " (cadr vars) ", " (caddr vars)))))
(define-c-generator read-integer #f
(lambda (call port indent)
(indent-to port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(write-c-io-call call port "PS_READ_INTEGER" 1 ", "
(car vars) ", " (cadr vars) ", " (caddr vars)))))
(define-c-generator write-char #f
(lambda (call port indent)
(indent-to port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(if (used? (car vars))
(write-c-io-call call port "PS_WRITE_CHAR" 1 ", " 2 ", " (car vars))
(begin
(display "{ long ignoreXX;" port)
(indent-to port indent)
(write-c-io-call call port "PS_WRITE_CHAR" 1 ", " 2 ", ignoreXX")
(display " }" port))))))
(define-c-generator write-string #t
(lambda (call port indent)
(write-c-io-call call port "ps_write_string" 0 ", " 1)))
(define-c-generator write-integer #t
(lambda (call port indent)
(write-c-io-call call port "ps_write_integer" 0 ", " 1)))
(define-c-generator force-output #t
(lambda (call port indent)
(write-c-io-call call port "ps_flush" 0)))
(define-c-generator read-block #f
(lambda (call port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(c-assign-to-variable (car vars) port indent)
(write-c-io-call call port "ps_read_block" 1 ", ((char *) " 2 "), " 3
", &" (cadr vars) ", &" (caddr vars))
(write-char #\; port))))
(define-c-generator write-block #t
(lambda (call port indent)
(write-c-io-call call port "ps_write_block" 0 ", ((char *) " 1 ")"
", " 2)))
; (read-block (lambda (okay? eof? got) ...) port buffer count)
;
;(define-c-generator read-block #f
; (lambda (call port indent)
; (let* ((cont (call-arg call 0))
; (vars (lambda-variables cont)))
; ;; got = ps_read(port, buffer, count, &okay?, &eof?);
; (c-assign-to-variable (caddr vars) port indent)
; (write-c-io-call call port
; "ps_read" 1 ", (void *)" 2 ", " 3 ", &" (car vars)
; ", &" (cadr vars))
; (write-char #\; port))))
;
;; (write-block (lambda (okay? sent) ...) port buffer count)
;
;(define-c-generator write-block #f
; (lambda (call port indent)
; (let* ((cont (call-arg call 0))
; (vars (lambda-variables cont)))
; ;; sent = ps_write(port, buffer, count, &okay?);
; (c-assign-to-variable (cadr vars) port indent)
; (write-c-io-call call port
; "ps_write" 1 ", (void *)" 2 ", " 3 ", &" (car vars))
; (write-char #\; port))))
(define-c-generator open-input-file #f
(lambda (call port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(c-assign-to-variable (car vars) port indent)
(write-c-io-call call port "ps_open_input_file" 1 ", &" (cadr vars))
(write-char #\; port))))
(define-c-generator open-output-file #f
(lambda (call port indent)
(let ((vars (lambda-variables (call-arg call 0))))
(c-assign-to-variable (car vars) port indent)
(write-c-io-call call port "ps_open_output_file" 1 ", &" (cadr vars))
(write-char #\; port))))
(define-c-generator close-input-port #t
(lambda (call port indent)
(write-c-io-call call port "ps_close" 0)))
(define-c-generator close-output-port #t
(lambda (call port indent)
(write-c-io-call call port "ps_close" 0)))
(define-c-generator abort #t
(lambda (call port indent)
(format port "(exit -1)")))
(define-c-generator error #f
(lambda (call port indent)
(indent-to port indent)
(format port "ps_error(")
(c-value (call-arg call 1) port)
(format port ", ~D" (- (call-arg-count call) 2))
(do ((i 2 (+ i 1)))
((= i (call-arg-count call)))
(format port ", ")
(c-value (call-arg call i) port))
(format port ");")))
(define-c-generator error-string #t
(lambda (call port indent)
(write-c-io-call call port "ps_error_string" 0)))
; (c-e-v <proc> <nargs> <pointer-to-args>)
(define-c-generator call-external-value #t
(lambda (call port indent)
(format port "((long(*)())")
(c-value (call-arg call 0) port)
(format port ")(")
(c-value (call-arg call 1) port)
(format port ", ")
(c-value (call-arg call 2) port)
(writec port #\))))
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