[deliverable/binutils-gdb.git] / gdb / scm-valprint.c

/* Scheme/Guile language support routines for GDB, the GNU debugger.
   Copyright 1995 Free Software Foundation, Inc.

This file is part of GDB.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "value.h"
#include "scm-lang.h"
#include "valprint.h"

/* Prints the SCM value VALUE by invoking the inferior, if appropraite.
   Returns >= 0 on succes;  retunr -1 if the inferior cannot/should not
   print VALUE. */

int
scm_inferior_print (value, stream, format, deref_ref, recurse, pretty)
     LONGEST value;
     GDB_FILE *stream;
     int format;
     int deref_ref;
     int recurse;
     enum val_prettyprint pretty;
{
  return -1;
}

/* {Names of immediate symbols}
 * This table must agree with the declarations in scm.h: {Immediate Symbols}.*/

static char *scm_isymnames[] =
{
  /* This table must agree with the declarations */
  "#@and",
  "#@begin",
  "#@case",
  "#@cond",
  "#@do",
  "#@if",
  "#@lambda",
  "#@let",
  "#@let*",
  "#@letrec",
  "#@or",
  "#@quote",
  "#@set!",
  "#@define",
#if 0
  "#@literal-variable-ref",
  "#@literal-variable-set!",
#endif
  "#@apply",
  "#@call-with-current-continuation",

 /* user visible ISYMS */
 /* other keywords */
 /* Flags */

  "#f",
  "#t",
  "#<undefined>",
  "#<eof>",
  "()",
  "#<unspecified>"
};

static int
scm_scmlist_print (svalue, stream, format, deref_ref, recurse, pretty)
     LONGEST svalue;
     GDB_FILE *stream;
     int format;
     int deref_ref;
     int recurse;
     enum val_prettyprint pretty;
{
  unsigned int more = print_max;
  if (recurse > 6)
    {
      fputs_filtered ("...", stream);
      return 0;
    }
  scm_scmval_print (SCM_CAR (svalue), stream, format,
		    deref_ref, recurse + 1, pretty);
  svalue = SCM_CDR (svalue);
  for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
    {
      if (SCM_NECONSP (svalue))
	break;
      fputs_filtered (" ", stream);
      if (--more == 0)
	{
	  fputs_filtered ("...", stream);
	  return;
	}
      scm_scmval_print (SCM_CAR (svalue), stream, format,
			deref_ref, recurse + 1, pretty);
    }
  if (SCM_NNULLP (svalue))
    {
      fputs_filtered (" . ", stream);
      scm_scmval_print (svalue, stream, format,
			deref_ref, recurse + 1, pretty);
    }
}

static void
scm_ipruk (hdr, ptr, stream)
     char *hdr;
     LONGEST ptr;
     GDB_FILE *stream;
{
  fprintf_filtered (stream, "#<unknown-%s", hdr);
#define SCM_SIZE TYPE_LENGTH (builtin_type_scm)
  if (SCM_CELLP (ptr))
    fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
		      (long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
  fprintf_filtered (stream, " 0x%x>", ptr);
}

int
scm_scmval_print (svalue, stream, format, deref_ref, recurse, pretty)
     LONGEST svalue;
     GDB_FILE *stream;
     int format;
     int deref_ref;
     int recurse;
     enum val_prettyprint pretty;
{
 taloop:
  switch (7 & svalue)
    {
    case 2:
    case 6:
      print_longest (stream, format ? format : 'd', 1, svalue >> 2);
      break;
    case 4:
      if (SCM_ICHRP (svalue))
	{
	  svalue = SCM_ICHR (svalue);
	  scm_printchar (svalue, stream);
	  break;
	}
      else if (SCM_IFLAGP (svalue)
	       && (SCM_ISYMNUM (svalue)
		   < (sizeof scm_isymnames / sizeof (char *))))
	{
	  fputs_filtered (SCM_ISYMCHARS (svalue), stream);
	  break;
	}
      else if (SCM_ILOCP (svalue))
	{
	  fprintf_filtered (stream, "#@%ld%c%ld",
			    (long) SCM_IFRAME (svalue),
			    SCM_ICDRP (svalue) ? '-' : '+',
			    (long) SCM_IDIST (svalue));
	  break;
	}
      else
	goto idef;
      break;
    case 1:
      /* gloc */
      fputs_filtered ("#@", stream);
      svalue = SCM_CAR (svalue - 1);
      goto taloop;
    default:
    idef:
      scm_ipruk ("immediate", svalue, stream);
      break;
    case 0:

      switch (SCM_TYP7 (svalue))
	{
	case scm_tcs_cons_gloc:
	  if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
	    {
	      SCM name;
	      fputs_filtered ("#<latte ", stream);
#if 1
	      fputs_filtered ("???", stream);
#else
	      name = ((SCM n*)(STRUCT_TYPE( exp)))[struct_i_name];
	      scm_lfwrite (CHARS (name),
			   (sizet) sizeof (char),
			   (sizet) LENGTH (name),
			   port);
#endif
	      fprintf_filtered (stream, " #X%lX>", svalue);
	      break;
	    }
	case scm_tcs_cons_imcar:
	case scm_tcs_cons_nimcar:
	  fputs_filtered ("(", stream);
	  scm_scmlist_print (svalue, stream, format,
			     deref_ref, recurse + 1, pretty);
	  fputs_filtered (")", stream);
	  break;
	case scm_tcs_closures:
	  fputs_filtered ("#<CLOSURE ", stream);
	  scm_scmlist_print (SCM_CODE (svalue), stream, format,
			     deref_ref, recurse + 1, pretty);
	  fputs_filtered (">", stream);
	  break;
	case scm_tc7_string:
	  {
	    int len = SCM_LENGTH (svalue);
	    CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
	    int i;
	    int done = 0;
	    int buf_size;
	    char buffer[64];
	    int truncate = print_max && len > (int) print_max;
	    if (truncate)
	      len = print_max;
	    fputs_filtered ("\"", stream);
	    for (; done < len; done += buf_size)
	      {
		buf_size = min (len - done, 64);
		read_memory (addr + done, buffer, buf_size);
		
		for (i = 0; i < buf_size; ++i)
		  switch (buffer[i])
		    {
		    case '\"':
		    case '\\':
		      fputs_filtered ("\\", stream);
		    default:
		      fprintf_filtered (stream, "%c", buffer[i]);
		    }
	      }
	    fputs_filtered (truncate ? "...\"" : "\"", stream);
	    break;
	  }
	  break;
	case scm_tcs_symbols:
	  {
	    int len = SCM_LENGTH (svalue);

	    char * str = (char*) alloca (len);
	    read_memory (SCM_CDR (svalue), str, len + 1);
	    /* Should handle weird characters FIXME */
	    str[len] = '\0';
	    fputs_filtered (str, stream);
	    break;
	  }
	case scm_tc7_vector:
	  {
	    int len = SCM_LENGTH (svalue);
	    int i;
	    LONGEST elements = SCM_CDR(svalue);
	    fputs_filtered ("#(", stream);
	    for (i = 0; i < len; ++i)
	      {
		if (i > 0)
		  fputs_filtered (" ", stream);
		scm_scmval_print (scm_get_field (elements, i), stream, format,
				  deref_ref, recurse + 1, pretty);
	      }
	    fputs_filtered (")", stream);
	  }
	  break;
#if 0
	case tc7_lvector:
	  {
	    SCM result;
	    SCM hook;
	    hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
	    if (hook == BOOL_F)
	      {
		scm_puts ("#<locked-vector ", port);
		scm_intprint(CDR(exp), 16, port);
		scm_puts (">", port);
	      }
	    else
	      {
		result
		  = scm_apply (hook,
			       scm_listify (exp, port, (writing ? BOOL_T : BOOL_F),
					    SCM_UNDEFINED),
			       EOL);
		if (result == BOOL_F)
		  goto punk;
	      }
	    break;
	  }
	  break;
	case tc7_bvect:
	case tc7_ivect:
	case tc7_uvect:
	case tc7_fvect:
	case tc7_dvect:
	case tc7_cvect:
	  scm_raprin1 (exp, port, writing);
	  break;
#endif
	case scm_tcs_subrs:
	  {
	    int index = SCM_CAR (svalue) >> 8;
#if 1
	    char str[20];
	    sprintf (str, "#%d", index);
#else
	    char *str = index ? SCM_CHARS (scm_heap_org+index) : "";
#define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
	    char *str = CHARS (SNAME (exp));
#endif
	    fprintf_filtered (stream, "#<primitive-procedure %s>",
			      str);
	  }
	  break;
#if 0
#ifdef CCLO
	case tc7_cclo:
	  scm_puts ("#<compiled-closure ", port);
	  scm_iprin1 (CCLO_SUBR (exp), port, writing);
	  scm_putc ('>', port);
	  break;
#endif
	case tc7_contin:
	  fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
			    LENGTH (svalue),
			    (long) CHARS (svalue));
	  break;
	case tc7_port:
	  i = PTOBNUM (exp);
	  if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
	    break;
	  goto punk;
	case tc7_smob:
	  i = SMOBNUM (exp);
	  if (i < scm_numsmob && scm_smobs[i].print
	      && (scm_smobs[i].print) (exp, port, writing))
	    break;
	  goto punk;
#endif
	default:
	punk:scm_ipruk ("type", svalue, stream);
	}
      break;
    }
}

int
scm_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
	     pretty)
     struct type *type;
     char *valaddr;
     CORE_ADDR address;
     GDB_FILE *stream;
     int format;
     int deref_ref;
     int recurse;
     enum val_prettyprint pretty;
{
  if (is_scmvalue_type (type))
    {
      LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
      if (scm_inferior_print (svalue, stream, format,
			      deref_ref, recurse, pretty) >= 0)
	{
	}
      else
	{
	  scm_scmval_print (svalue, stream, format,
			      deref_ref, recurse, pretty);
	}

      gdb_flush (stream);
      return (0);
    }
  else
    {
      return c_val_print (type, valaddr, address, stream, format,
			  deref_ref, recurse, pretty);
    }
}

int
scm_value_print (val, stream, format, pretty)
     value_ptr val;
     GDB_FILE *stream;
     int format;
     enum val_prettyprint pretty;
{
  return (val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
		     VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
}
Commit	Line	Data
5b4d668a PB	1	/* Scheme/Guile language support routines for GDB, the GNU debugger.
	2	Copyright 1995 Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	19
	20	#include "defs.h"
	21	#include "symtab.h"
	22	#include "gdbtypes.h"
	23	#include "expression.h"
	24	#include "parser-defs.h"
	25	#include "language.h"
	26	#include "value.h"
	27	#include "scm-lang.h"
	28	#include "valprint.h"
	29
	30	/* Prints the SCM value VALUE by invoking the inferior, if appropraite.
	31	Returns >= 0 on succes; retunr -1 if the inferior cannot/should not
	32	print VALUE. */
	33
	34	int
	35	scm_inferior_print (value, stream, format, deref_ref, recurse, pretty)
	36	LONGEST value;
	37	GDB_FILE *stream;
	38	int format;
	39	int deref_ref;
	40	int recurse;
	41	enum val_prettyprint pretty;
	42	{
	43	return -1;
	44	}
	45
	46	/* {Names of immediate symbols}
	47	* This table must agree with the declarations in scm.h: {Immediate Symbols}.*/
	48
	49	static char *scm_isymnames[] =
	50	{
	51	/* This table must agree with the declarations */
	52	"#@and",
	53	"#@begin",
	54	"#@case",
	55	"#@cond",
	56	"#@do",
	57	"#@if",
	58	"#@lambda",
	59	"#@let",
	60	"#@let*",
	61	"#@letrec",
	62	"#@or",
	63	"#@quote",
	64	"#@set!",
65	"#@define",
66	#if 0
67	"#@literal-variable-ref",
68	"#@literal-variable-set!",
69	#endif
70	"#@apply",
71	"#@call-with-current-continuation",
72
73	/* user visible ISYMS */
74	/* other keywords */
75	/* Flags */
76
77	"#f",
78	"#t",
79	"#<undefined>",
80	"#<eof>",
81	"()",
82	"#<unspecified>"
83	};
84
85	static int
86	scm_scmlist_print (svalue, stream, format, deref_ref, recurse, pretty)
87	LONGEST svalue;
88	GDB_FILE *stream;
89	int format;
90	int deref_ref;
91	int recurse;
92	enum val_prettyprint pretty;
93	{
94	unsigned int more = print_max;
95	if (recurse > 6)
96	{
97	fputs_filtered ("...", stream);
98	return 0;
99	}
100	scm_scmval_print (SCM_CAR (svalue), stream, format,
101	deref_ref, recurse + 1, pretty);
102	svalue = SCM_CDR (svalue);
103	for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
104	{
105	if (SCM_NECONSP (svalue))
106	break;
107	fputs_filtered (" ", stream);
108	if (--more == 0)
109	{
110	fputs_filtered ("...", stream);
111	return;
112	}
113	scm_scmval_print (SCM_CAR (svalue), stream, format,
114	deref_ref, recurse + 1, pretty);
115	}
116	if (SCM_NNULLP (svalue))
117	{
118	fputs_filtered (" . ", stream);
119	scm_scmval_print (svalue, stream, format,
120	deref_ref, recurse + 1, pretty);
121	}
122	}
123
124	static void
125	scm_ipruk (hdr, ptr, stream)
126	char *hdr;
127	LONGEST ptr;
128	GDB_FILE *stream;
129	{
130	fprintf_filtered (stream, "#<unknown-%s", hdr);
3c02944a	131	#define SCM_SIZE TYPE_LENGTH (builtin_type_scm)
5b4d668a PB	132	if (SCM_CELLP (ptr))
	133	fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
	134	(long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
	135	fprintf_filtered (stream, " 0x%x>", ptr);
	136	}
	137
	138	int
	139	scm_scmval_print (svalue, stream, format, deref_ref, recurse, pretty)
	140	LONGEST svalue;
	141	GDB_FILE *stream;
	142	int format;
	143	int deref_ref;
	144	int recurse;
	145	enum val_prettyprint pretty;
	146	{
	147	taloop:
	148	switch (7 & svalue)
	149	{
	150	case 2:
	151	case 6:
	152	print_longest (stream, format ? format : 'd', 1, svalue >> 2);
	153	break;
	154	case 4:
	155	if (SCM_ICHRP (svalue))
	156	{
	157	svalue = SCM_ICHR (svalue);
	158	scm_printchar (svalue, stream);
	159	break;
	160	}
	161	else if (SCM_IFLAGP (svalue)
	162	&& (SCM_ISYMNUM (svalue)
	163	< (sizeof scm_isymnames / sizeof (char *))))
	164	{
	165	fputs_filtered (SCM_ISYMCHARS (svalue), stream);
	166	break;
	167	}
	168	else if (SCM_ILOCP (svalue))
	169	{
	170	fprintf_filtered (stream, "#@%ld%c%ld",
	171	(long) SCM_IFRAME (svalue),
	172	SCM_ICDRP (svalue) ? '-' : '+',
	173	(long) SCM_IDIST (svalue));
	174	break;
	175	}
	176	else
	177	goto idef;
	178	break;
	179	case 1:
	180	/* gloc */
	181	fputs_filtered ("#@", stream);
	182	svalue = SCM_CAR (svalue - 1);
	183	goto taloop;
	184	default:
	185	idef:
	186	scm_ipruk ("immediate", svalue, stream);
	187	break;
	188	case 0:
	189
	190	switch (SCM_TYP7 (svalue))
	191	{
	192	case scm_tcs_cons_gloc:
	193	if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
	194	{
	195	SCM name;
196	fputs_filtered ("#<latte ", stream);
197	#if 1
198	fputs_filtered ("???", stream);
199	#else
200	name = ((SCM n*)(STRUCT_TYPE( exp)))[struct_i_name];
201	scm_lfwrite (CHARS (name),
202	(sizet) sizeof (char),
203	(sizet) LENGTH (name),
204	port);
205	#endif
206	fprintf_filtered (stream, " #X%lX>", svalue);
207	break;
208	}
209	case scm_tcs_cons_imcar:
210	case scm_tcs_cons_nimcar:
211	fputs_filtered ("(", stream);
212	scm_scmlist_print (svalue, stream, format,
213	deref_ref, recurse + 1, pretty);
214	fputs_filtered (")", stream);
215	break;
216	case scm_tcs_closures:
217	fputs_filtered ("#<CLOSURE ", stream);
218	scm_scmlist_print (SCM_CODE (svalue), stream, format,
219	deref_ref, recurse + 1, pretty);
220	fputs_filtered (">", stream);
221	break;
222	case scm_tc7_string:
223	{
224	int len = SCM_LENGTH (svalue);
225	CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
226	int i;
227	int done = 0;
228	int buf_size;
229	char buffer[64];
230	int truncate = print_max && len > (int) print_max;
231	if (truncate)
232	len = print_max;
233	fputs_filtered ("\"", stream);
234	for (; done < len; done += buf_size)
235	{
236	buf_size = min (len - done, 64);
237	read_memory (addr + done, buffer, buf_size);
238
239	for (i = 0; i < buf_size; ++i)
240	switch (buffer[i])
241	{
242	case '\"':
243	case '\\':
244	fputs_filtered ("\\", stream);
245	default:
246	fprintf_filtered (stream, "%c", buffer[i]);
247	}
248	}
249	fputs_filtered (truncate ? "...\"" : "\"", stream);
250	break;
251	}
252	break;
253	case scm_tcs_symbols:
254	{
255	int len = SCM_LENGTH (svalue);
256
257	char * str = (char*) alloca (len);
258	read_memory (SCM_CDR (svalue), str, len + 1);
259	/* Should handle weird characters FIXME */
260	str[len] = '\0';
261	fputs_filtered (str, stream);
262	break;
263	}
264	case scm_tc7_vector:
265	{
266	int len = SCM_LENGTH (svalue);
267	int i;
268	LONGEST elements = SCM_CDR(svalue);
269	fputs_filtered ("#(", stream);
270	for (i = 0; i < len; ++i)
271	{
272	if (i > 0)
273	fputs_filtered (" ", stream);
274	scm_scmval_print (scm_get_field (elements, i), stream, format,
275	deref_ref, recurse + 1, pretty);
276	}
277	fputs_filtered (")", stream);
278	}
279	break;
280	#if 0
281	case tc7_lvector:
282	{
283	SCM result;
284	SCM hook;
285	hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
286	if (hook == BOOL_F)
287	{
288	scm_puts ("#<locked-vector ", port);
289	scm_intprint(CDR(exp), 16, port);
290	scm_puts (">", port);
291	}
292	else
293	{
294	result
295	= scm_apply (hook,
296	scm_listify (exp, port, (writing ? BOOL_T : BOOL_F),
297	SCM_UNDEFINED),
298	EOL);
299	if (result == BOOL_F)
300	goto punk;
301	}
302	break;
303	}
304	break;
305	case tc7_bvect:
306	case tc7_ivect:
307	case tc7_uvect:
308	case tc7_fvect:
309	case tc7_dvect:
310	case tc7_cvect:
311	scm_raprin1 (exp, port, writing);
312	break;
313	#endif
314	case scm_tcs_subrs:
315	{
316	int index = SCM_CAR (svalue) >> 8;
317	#if 1
318	char str[20];
319	sprintf (str, "#%d", index);
320	#else
321	char *str = index ? SCM_CHARS (scm_heap_org+index) : "";
322	#define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
323	char *str = CHARS (SNAME (exp));
324	#endif
325	fprintf_filtered (stream, "#<primitive-procedure %s>",
326	str);
327	}
328	break;
329	#if 0
330	#ifdef CCLO
331	case tc7_cclo:
332	scm_puts ("#<compiled-closure ", port);
333	scm_iprin1 (CCLO_SUBR (exp), port, writing);
334	scm_putc ('>', port);
335	break;
336	#endif
337	case tc7_contin:
338	fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
339	LENGTH (svalue),
340	(long) CHARS (svalue));
341	break;
342	case tc7_port:
343	i = PTOBNUM (exp);
344	if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
345	break;
346	goto punk;
347	case tc7_smob:
348	i = SMOBNUM (exp);
349	if (i < scm_numsmob && scm_smobs[i].print
350	&& (scm_smobs[i].print) (exp, port, writing))
351	break;
352	goto punk;
353	#endif
354	default:
355	punk:scm_ipruk ("type", svalue, stream);
356	}
357	break;
358	}
359	}
360
361	int
362	scm_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
363	pretty)
364	struct type *type;
365	char *valaddr;
366	CORE_ADDR address;
367	GDB_FILE *stream;
368	int format;
369	int deref_ref;
370	int recurse;
371	enum val_prettyprint pretty;
372	{
373	if (is_scmvalue_type (type))
374	{
3c02944a	375	LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
5b4d668a PB	376	if (scm_inferior_print (svalue, stream, format,
	377	deref_ref, recurse, pretty) >= 0)
	378	{
	379	}
	380	else
	381	{
	382	scm_scmval_print (svalue, stream, format,
	383	deref_ref, recurse, pretty);
	384	}
	385
	386	gdb_flush (stream);
	387	return (0);
	388	}
	389	else
	390	{
	391	return c_val_print (type, valaddr, address, stream, format,
	392	deref_ref, recurse, pretty);
	393	}
	394	}
	395
	396	int
	397	scm_value_print (val, stream, format, pretty)
	398	value_ptr val;
	399	GDB_FILE *stream;
	400	int format;
	401	enum val_prettyprint pretty;
	402	{
	403	return (val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
	404	VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
	405	}