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Added I/O predicates

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This commit is contained in:
Justin Ethier 2016-02-06 02:19:25 -05:00
parent ae4b5fe4c2
commit e68c275af4
1 changed files with 36 additions and 6 deletions
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42
scheme/base.sld
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@ -109,6 +109,10 @@
write-string
flush-output-port
read-line
input-port?
output-port?
input-port-open?
output-port-open?
features
any
every
@ -177,12 +181,6 @@
; open-input-string
; open-output-string
;
; ; it seems like these should be very do-able??
; input-port-open?
; input-port?
; output-port-open?
; output-port?
;
; for a lot of the following, need begin-splicing, or syntax-rules
; binary-port?
; define-values
@ -937,4 +935,36 @@
(define-c eof-object
"(void *data, int argc, closure _, object k)"
" return_closcall1(data, k, Cyc_EOF); ")
(define-c input-port?
"(void *data, int argc, closure _, object k, object port)"
" port_type *p = (port_type *)port;
Cyc_check_port(data, port);
return_closcall1(
data,
k,
(p->mode == 1) ? boolean_t : boolean_f); ")
(define-c output-port?
"(void *data, int argc, closure _, object k, object port)"
" port_type *p = (port_type *)port;
Cyc_check_port(data, port);
return_closcall1(
data,
k,
(p->mode == 0) ? boolean_t : boolean_f); ")
(define-c input-port-open?
"(void *data, int argc, closure _, object k, object port)"
" port_type *p = (port_type *)port;
Cyc_check_port(data, port);
return_closcall1(
data,
k,
(p->mode == 1 && p->fp != NULL) ? boolean_t : boolean_f); ")
(define-c output-port-open?
"(void *data, int argc, closure _, object k, object port)"
" port_type *p = (port_type *)port;
Cyc_check_port(data, port);
return_closcall1(
data,
k,
(p->mode == 0 && p->fp != NULL) ? boolean_t : boolean_f); ")
))