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(scm_frame_fluid): New.

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This commit is contained in:
Marius Vollmer 2004-01-07 18:08:52 +00:00
commit ef20bf705f
2 changed files with 19 additions and 0 deletions
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17
libguile/fluids.c
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@ -233,6 +233,23 @@ scm_c_with_fluid (SCM fluid, SCM value, SCM (*cproc) (), void *cdata)
}
#undef FUNC_NAME
static void
swap_fluid (SCM data)
{
SCM f = SCM_CAR (data);
SCM t = scm_fluid_ref (f);
scm_fluid_set_x (f, SCM_CDR (data));
SCM_SETCDR (data, t);
}
void
scm_frame_fluid (SCM fluid, SCM value)
{
SCM data = scm_cons (fluid, value);
scm_frame_rewind_with_scm (swap_fluid, data, SCM_F_WIND_EXPLICITLY);
scm_frame_unwind_with_scm (swap_fluid, data, SCM_F_WIND_EXPLICITLY);
}
void
scm_init_fluids ()
{