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* * backtrace.c (scm_display_application): New procedure:

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display-application; Set fancy printing parameters individually
	for different types of display (backtrace, error, application).
	(These should of course be customizable!)
This commit is contained in:
Mikael Djurfeldt 1997-03-07 21:42:32 +00:00
parent bc6b266af0
commit e3c37929e0
1 changed files with 54 additions and 16 deletions
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70
libguile/backtrace.c
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@ -231,8 +231,6 @@ display_frame_expr (hdr, exp, tlr, indentation, sport, port, pstate)
SCM port;
scm_print_state *pstate;
{
pstate->level = 2;
pstate->length = 3;
if (SCM_NIMP (exp) && SCM_CONSP (exp))
{
scm_iprlist (hdr, exp, tlr[0], port, pstate);
@ -243,6 +241,57 @@ display_frame_expr (hdr, exp, tlr, indentation, sport, port, pstate)
scm_gen_putc ('\n', port);
}
static void display_application SCM_P ((SCM frame, int indentation, SCM sport, SCM port, scm_print_state *pstate));
static void
display_application (frame, indentation, sport, port, pstate)
SCM frame;
int indentation;
SCM sport;
SCM port;
scm_print_state *pstate;
{
SCM proc = SCM_FRAME_PROC (frame);
SCM name = (SCM_NFALSEP (scm_procedure_p (proc))
? scm_procedure_name (proc)
: SCM_BOOL_F);
display_frame_expr ("[",
scm_cons (SCM_NFALSEP (name) ? name : proc,
SCM_FRAME_ARGS (frame)),
SCM_FRAME_EVAL_ARGS_P (frame) ? " ..." : "]",
indentation,
sport,
port,
pstate);
}
SCM_PROC(s_display_application, "display-application", 1, 1, 0, scm_display_application);
SCM
scm_display_application (SCM frame, SCM port)
{
if (SCM_UNBNDP (port))
port = scm_cur_outp;
if (SCM_FRAME_PROC_P (frame))
/* Display an application. */
{
SCM print_state;
scm_print_state *pstate;
/* Create a print state for printing of frames. */
print_state = scm_make_print_state ();
pstate = SCM_PRINT_STATE (print_state);
pstate->writingp = 1;
pstate->fancyp = 1;
pstate->level = 2;
pstate->length = 9;
display_application (frame, 0, SCM_BOOL_F, port, pstate); /*fixme*/
return SCM_BOOL_T;
}
else
return SCM_BOOL_F;
}
static void display_frame SCM_P ((SCM frame, int nfield, int indentation, SCM sport, SCM port, scm_print_state *pstate));
static void
display_frame (frame, nfield, indentation, sport, port, pstate)
@ -280,20 +329,7 @@ display_frame (frame, nfield, indentation, sport, port, pstate)
if (SCM_FRAME_PROC_P (frame))
/* Display an application. */
{
SCM proc = SCM_FRAME_PROC (frame);
SCM name = (SCM_NFALSEP (scm_procedure_p (proc))
? scm_procedure_name (proc)
: SCM_BOOL_F);
display_frame_expr ("[",
scm_cons (SCM_NFALSEP (name) ? name : proc,
SCM_FRAME_ARGS (frame)),
SCM_FRAME_EVAL_ARGS_P (frame) ? " ..." : "]",
nfield + 1 + indentation,
sport,
port,
pstate);
}
display_application (frame, nfield + 1 + indentation, sport, port, pstate);
else
/* Display a special form. */
{
@ -382,6 +418,8 @@ scm_display_backtrace (stack, port, first, depth)
pstate = SCM_PRINT_STATE (print_state);
pstate->writingp = 1;
pstate->fancyp = 1;
pstate->level = 2;
pstate->length = 3;
/* First find out if it's reasonable to do indentation. */
if (SCM_BACKWARDS_P)