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assert value bound to current-(input|output|error)-port is port

This commit is contained in:
Yuichi Nishiwaki 2015-06-19 00:02:24 +09:00
parent 0b66447e79
commit f2e6feea7f
1 changed files with 27 additions and 18 deletions
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45
extlib/benz/port.c
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@ -14,6 +14,30 @@ pic_eof_object()
return v; return v;
} }
static pic_value
pic_assert_port(pic_state *pic)
{
struct pic_port *port;
pic_get_args(pic, "p", &port);
return pic_obj_value(port);
}
/* current-(input|output|error)-port */
static void
pic_define_standard_port(pic_state *pic, const char *name, xFILE *file, int dir)
{
struct pic_port *port;
port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port), PIC_TT_PORT);
port->file = file;
port->flags = dir | PIC_PORT_TEXT | PIC_PORT_OPEN;
pic_defvar(pic, name, pic_obj_value(port), pic_make_proc(pic, pic_assert_port, "pic_assert_port"));
}
#define DEFINE_STANDARD_PORT_ACCESSOR(name, var) \ #define DEFINE_STANDARD_PORT_ACCESSOR(name, var) \
struct pic_port * \ struct pic_port * \
name(pic_state *pic) \ name(pic_state *pic) \
@ -29,17 +53,6 @@ DEFINE_STANDARD_PORT_ACCESSOR(pic_stdin, "current-input-port")
DEFINE_STANDARD_PORT_ACCESSOR(pic_stdout, "current-output-port") DEFINE_STANDARD_PORT_ACCESSOR(pic_stdout, "current-output-port")
DEFINE_STANDARD_PORT_ACCESSOR(pic_stderr, "current-error-port") DEFINE_STANDARD_PORT_ACCESSOR(pic_stderr, "current-error-port")
struct pic_port *
pic_make_standard_port(pic_state *pic, xFILE *file, short dir)
{
struct pic_port *port;
port = (struct pic_port *)pic_obj_alloc(pic, sizeof(struct pic_port), PIC_TT_PORT);
port->file = file;
port->flags = dir | PIC_PORT_TEXT | PIC_PORT_OPEN;
return port;
}
struct strfile { struct strfile {
pic_state *pic; pic_state *pic;
char *buf; char *buf;
@ -748,13 +761,9 @@ pic_port_flush(pic_state *pic)
void void
pic_init_port(pic_state *pic) pic_init_port(pic_state *pic)
{ {
struct pic_port *xSTDIN = pic_make_standard_port(pic, xstdin, PIC_PORT_IN); pic_define_standard_port(pic, "current-input-port", xstdin, PIC_PORT_IN);
struct pic_port *xSTDOUT = pic_make_standard_port(pic, xstdout, PIC_PORT_OUT); pic_define_standard_port(pic, "current-output-port", xstdout, PIC_PORT_OUT);
struct pic_port *xSTDERR = pic_make_standard_port(pic, xstderr, PIC_PORT_OUT); pic_define_standard_port(pic, "current-error-port", xstderr, PIC_PORT_OUT);
pic_defvar(pic, "current-input-port", pic_obj_value(xSTDIN), NULL);
pic_defvar(pic, "current-output-port", pic_obj_value(xSTDOUT), NULL);
pic_defvar(pic, "current-error-port", pic_obj_value(xSTDERR), NULL);
pic_defun(pic, "call-with-port", pic_port_call_with_port); pic_defun(pic, "call-with-port", pic_port_call_with_port);