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* evalext.c, evalext.h (scm_m_generalized_set_x): New memoizing

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macro.
(scm_init_evalext): Call scm_make_gsubr for
scm_m_generalized_set_x.
This commit is contained in:
Mikael Djurfeldt 1999-03-11 11:45:34 +00:00
parent 79dc2f37e9
commit a70fb265a2
2 changed files with 17 additions and 0 deletions
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16
libguile/evalext.c
View file

@ -46,6 +46,21 @@
#include "evalext.h"
SCM_SYMBOL (scm_sym_setter, "setter");
SCM
scm_m_generalized_set_x (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x);
if (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)))
return scm_cons (SCM_IM_SET_X, x);
else if (SCM_NIMP (SCM_CAR (x)) && SCM_CONSP (SCM_CAR (x)))
return scm_cons (SCM_LIST2 (scm_sym_setter, SCM_CAAR (x)),
scm_append (SCM_LIST2 (SCM_CDAR (x), SCM_CDR (x))));
return scm_wta (xorig, scm_s_variable, scm_s_set_x);
}
SCM_PROC (s_definedp, "defined?", 1, 1, 0, scm_definedp);
SCM
@ -136,5 +151,6 @@ SCM_PROC (s_map_in_order, "map-in-order", 2, 0, 1, scm_map);
void
scm_init_evalext ()
{
scm_make_synt (scm_s_set_x, scm_makmmacro, scm_m_generalized_set_x);
#include "evalext.x"
}

1
libguile/evalext.h
View file

@ -48,6 +48,7 @@
extern SCM scm_m_generalized_set_x (SCM xorig, SCM env);
extern SCM scm_definedp (SCM sym, SCM env);
extern SCM scm_m_undefine (SCM x, SCM env);
extern void scm_init_evalext (void);