[bpt/guile.git] / libguile / srcprop.c

/*	Copyright (C) 1995,1996, 1997 Free Software Foundation
 * 
 * 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, 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of GUILE.
 *
 * The exception is that, if you link the GUILE library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the GUILE library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name GUILE.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * GUILE, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for GUILE, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 *
 * The author can be reached at djurfeldt@nada.kth.se
 * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
\f

#include <stdio.h>
#include "_scm.h"
#include "smob.h"
#include "alist.h"
#include "debug.h"
#include "hashtab.h"
#include "hash.h"
#include "weaks.h"

#include "srcprop.h"
\f
/* {Source Properties}
 *
 * Properties of source list expressions.
 * Five of these have special meaning and optimized storage:
 *
 * filename    string   The name of the source file.
 * copy        list     A copy of the list expression.
 * line	       integer	The source code line number.
 * column      integer	The source code column number.
 * breakpoint  boolean	Sets a breakpoint on this form.
 *
 * Most properties above can be set by the reader.
 *
 */

SCM scm_i_filename;
SCM scm_i_copy;
SCM scm_i_line;
SCM scm_i_column;
SCM scm_i_breakpoint;

long scm_tc16_srcprops;
static scm_srcprops_chunk *srcprops_chunklist = 0;
static scm_srcprops *srcprops_freelist = 0;


static SCM marksrcprops SCM_P ((SCM obj));

static SCM
marksrcprops (obj)
     SCM obj;
{
  scm_gc_mark (SRCPROPFNAME (obj));
  scm_gc_mark (SRCPROPCOPY (obj));
  return SRCPROPPLIST (obj);
}


static scm_sizet freesrcprops SCM_P ((SCM obj));

static scm_sizet
freesrcprops (obj)
     SCM obj;
{
  *((scm_srcprops **) SCM_CDR (obj)) = srcprops_freelist;
  srcprops_freelist = (scm_srcprops *) SCM_CDR (obj);
  return 0; /* srcprops_chunks are not freed until leaving guile */
}


static int prinsrcprops SCM_P ((SCM obj, SCM port, scm_print_state *pstate));

static int
prinsrcprops (obj, port, pstate)
     SCM obj;
     SCM port;
     scm_print_state *pstate;
{
  int writingp = SCM_WRITINGP (pstate);
  scm_puts ("#<srcprops ", port);
  SCM_SET_WRITINGP (pstate, 1);
  scm_iprin1 (scm_srcprops_to_plist (obj), port, pstate);
  SCM_SET_WRITINGP (pstate, writingp);
  scm_putc ('>', port);
  return 1;
}

static scm_smobfuns srcpropssmob =
{marksrcprops, freesrcprops, prinsrcprops, 0};


SCM
scm_make_srcprops (line, col, filename, copy, plist)
     int line;
     int col;
     SCM filename;
     SCM copy;
     SCM plist;
{
  register SCM ans;
  register scm_srcprops *ptr;
  SCM_DEFER_INTS;
  if ((ptr = srcprops_freelist) != NULL)
    srcprops_freelist = *(scm_srcprops **)ptr;
  else
    {
      int i;
      scm_srcprops_chunk *mem;
      scm_sizet n = sizeof (scm_srcprops_chunk)
	            + sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
      SCM_SYSCALL (mem = (scm_srcprops_chunk *) malloc (n));
      SCM_ASSERT (mem, SCM_UNDEFINED, SCM_NALLOC, "srcprops");
      scm_mallocated += n;
      mem->next = srcprops_chunklist;
      srcprops_chunklist = mem;
      ptr = &mem->srcprops[0];
      for (i = 1; i < SRCPROPS_CHUNKSIZE - 1; ++i)
	*(scm_srcprops **)&ptr[i] = &ptr[i + 1];
      *(scm_srcprops **)&ptr[SRCPROPS_CHUNKSIZE - 1] = 0;
      srcprops_freelist = (scm_srcprops *) &ptr[1];
    }
  SCM_NEWCELL (ans);
  SCM_SETCAR (ans, scm_tc16_srcprops);
  ptr->pos = SRCPROPMAKPOS (line, col);
  ptr->fname = filename;
  ptr->copy = copy;
  ptr->plist = plist;
  SCM_SETCDR (ans, (SCM) ptr);
  SCM_ALLOW_INTS;
  return ans;
}


SCM
scm_srcprops_to_plist (obj)
     SCM obj;
{
  SCM plist = SRCPROPPLIST (obj);
  if (!SCM_UNBNDP (SRCPROPCOPY (obj)))
    plist = scm_acons (scm_i_copy, SRCPROPCOPY (obj), plist);
  if (!SCM_UNBNDP (SRCPROPFNAME (obj)))
    plist = scm_acons (scm_i_filename, SRCPROPFNAME (obj), plist);
  plist = scm_acons (scm_i_column, SCM_MAKINUM (SRCPROPCOL (obj)), plist);
  plist = scm_acons (scm_i_line, SCM_MAKINUM (SRCPROPLINE (obj)), plist);
  plist = scm_acons (scm_i_breakpoint, SRCPROPBRK (obj), plist);
  return plist;
}

SCM_PROC (s_source_properties, "source-properties", 1, 0, 0, scm_source_properties);

SCM
scm_source_properties (obj)
     SCM obj;
{
  SCM p;
  SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_source_properties);
  if (SCM_MEMOIZEDP (obj))
    obj = SCM_MEMOIZED_EXP (obj);
#ifndef SCM_RECKLESS
  else if (SCM_NCONSP (obj))
    scm_wrong_type_arg (s_source_properties, 1, obj);
#endif
  p = scm_hashq_ref (scm_source_whash, obj, (SCM) NULL);
  if (p != (SCM) NULL && SRCPROPSP (p))
    return scm_srcprops_to_plist (p);
  return SCM_EOL;
}

/* Perhaps this procedure should look through an alist
   and try to make a srcprops-object...? */
SCM_PROC (s_set_source_properties_x, "set-source-properties!", 2, 0, 0, scm_set_source_properties_x);

SCM
scm_set_source_properties_x (obj, plist)
     SCM obj;
     SCM plist;
{
  SCM handle;
  SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_set_source_properties_x);
  if (SCM_MEMOIZEDP (obj))
    obj = SCM_MEMOIZED_EXP (obj);
#ifndef SCM_RECKLESS
  else if (SCM_NCONSP (obj))
    scm_wrong_type_arg (s_set_source_properties_x, 1, obj);
#endif
  handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist);
  SCM_SETCDR (handle, plist);
  return plist;
}

SCM_PROC (s_source_property, "source-property", 2, 0, 0, scm_source_property);

SCM
scm_source_property (obj, key)
     SCM obj;
     SCM key;
{
  SCM p;
  SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_source_property);
  if (SCM_MEMOIZEDP (obj))
    obj = SCM_MEMOIZED_EXP (obj);
#ifndef SCM_RECKLESS
  else if (SCM_NCONSP (obj))
    scm_wrong_type_arg (s_source_property, 1, obj);
#endif
  p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
  if (SCM_IMP (p) || !SRCPROPSP (p))
    goto plist;
  if      (scm_i_breakpoint == key) p = SRCPROPBRK (p);
  else if (scm_i_line       == key) p = SCM_MAKINUM (SRCPROPLINE (p));
  else if (scm_i_column     == key) p = SCM_MAKINUM (SRCPROPCOL (p));
  else if (scm_i_filename   == key) p = SRCPROPFNAME (p);
  else if (scm_i_copy       == key) p = SRCPROPCOPY (p);
  else
    {
      p = SRCPROPPLIST (p);
    plist:
      p = scm_assoc (key, p);
      return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F);
    }
  return SCM_UNBNDP (p) ? SCM_BOOL_F : p;
}

SCM_PROC (s_set_source_property_x, "set-source-property!", 3, 0, 0, scm_set_source_property_x);

SCM
scm_set_source_property_x (obj, key, datum)
     SCM obj;
     SCM key;
     SCM datum;
{
  scm_whash_handle h;
  SCM p;
  SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_set_source_property_x);
  if (SCM_MEMOIZEDP (obj))
    obj = SCM_MEMOIZED_EXP (obj);
#ifndef SCM_RECKLESS
  else if (SCM_NCONSP (obj))
    scm_wrong_type_arg (s_set_source_property_x, 1, obj);
#endif
  h = scm_whash_get_handle (scm_source_whash, obj);
  if (SCM_WHASHFOUNDP (h))
    p = SCM_WHASHREF (scm_source_whash, h);
  else
    {
      h = scm_whash_create_handle (scm_source_whash, obj);
      p = SCM_EOL;
    }
  if (scm_i_breakpoint == key)
    {
      if (SCM_FALSEP (datum))
	CLEARSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
			 ? p
			 : SCM_WHASHSET (scm_source_whash, h,
					 scm_make_srcprops (0,
							    0,
							    SCM_UNDEFINED,
							    SCM_UNDEFINED,
							    p)));
      else
	SETSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
		       ? p
		       : SCM_WHASHSET (scm_source_whash, h,
				       scm_make_srcprops (0,
							  0,
							  SCM_UNDEFINED,
							  SCM_UNDEFINED,
							  p)));
    }
  else if (scm_i_line == key)
    {
      if (SCM_NIMP (p) && SRCPROPSP (p))
	SETSRCPROPLINE (p, datum);
      else
	SCM_WHASHSET (scm_source_whash, h,
		  scm_make_srcprops (datum, 0, SCM_UNDEFINED, SCM_UNDEFINED, p));
    }
  else if (scm_i_column == key)
    {
      if (SCM_NIMP (p) && SRCPROPSP (p))
	SETSRCPROPCOL (p, datum);
      else
	SCM_WHASHSET (scm_source_whash, h,
		  scm_make_srcprops (0, datum, SCM_UNDEFINED, SCM_UNDEFINED, p));
    }
  else if (scm_i_filename == key)
    {
      if (SCM_NIMP (p) && SRCPROPSP (p))
	SRCPROPFNAME (p) = datum;
      else
	SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, datum, SCM_UNDEFINED, p));
    }
  else if (scm_i_filename == key)
    {
      if (SCM_NIMP (p) && SRCPROPSP (p))
	SRCPROPCOPY (p) = datum;
      else
	SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p));
    }
  else
    SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p));
  return SCM_UNSPECIFIED;
}


void
scm_init_srcprop ()
{
  scm_tc16_srcprops = scm_newsmob (&srcpropssmob);
  scm_source_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (2047));

  scm_i_filename = SCM_CAR (scm_sysintern ("filename", SCM_UNDEFINED));
  scm_i_copy = SCM_CAR (scm_sysintern ("copy", SCM_UNDEFINED));
  scm_i_line = SCM_CAR (scm_sysintern ("line", SCM_UNDEFINED));
  scm_i_column = SCM_CAR (scm_sysintern ("column", SCM_UNDEFINED));
  scm_i_breakpoint = SCM_CAR (scm_sysintern ("breakpoint", SCM_UNDEFINED));

  scm_sysintern ("source-whash", scm_source_whash);
#include "srcprop.x"
}

void
scm_finish_srcprop ()
{
  register scm_srcprops_chunk *ptr = srcprops_chunklist, *next;
  while (ptr)
    {
      next = ptr->next;
      free ((char *) ptr);
      scm_mallocated -= sizeof (scm_srcprops_chunk)
	                + sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
      ptr = next;
    }
}
Commit	Line	Data
b7f3516f	1	/* Copyright (C) 1995,1996, 1997 Free Software Foundation
575888bd MD	2	*
	3	* This program is free software; you can redistribute it and/or modify
	4	* it under the terms of the GNU General Public License as published by
	5	* the Free Software Foundation; either version 2, or (at your option)
	6	* any later version.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this software; see the file COPYING. If not, write to
82892bed JB	15	* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
82892bed JB	16	* Boston, MA 02111-1307 USA
575888bd MD	17	*
	18	* As a special exception, the Free Software Foundation gives permission
	19	* for additional uses of the text contained in its release of GUILE.
	20	*
	21	* The exception is that, if you link the GUILE library with other files
	22	* to produce an executable, this does not by itself cause the
	23	* resulting executable to be covered by the GNU General Public License.
	24	* Your use of that executable is in no way restricted on account of
	25	* linking the GUILE library code into it.
	26	*
	27	* This exception does not however invalidate any other reasons why
	28	* the executable file might be covered by the GNU General Public License.
	29	*
	30	* This exception applies only to the code released by the
	31	* Free Software Foundation under the name GUILE. If you copy
	32	* code from other Free Software Foundation releases into a copy of
	33	* GUILE, as the General Public License permits, the exception does
	34	* not apply to the code that you add in this way. To avoid misleading
	35	* anyone as to the status of such modified files, you must delete
	36	* this exception notice from them.
	37	*
	38	* If you write modifications of your own for GUILE, it is your choice
	39	* whether to permit this exception to apply to your modifications.
	40	* If you do not wish that, delete this exception notice.
	41	*
	42	* The author can be reached at djurfeldt@nada.kth.se
82892bed	43	* Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
575888bd MD	44	\f
	45
	46	#include <stdio.h>
	47	#include "_scm.h"
20e6290e JB	48	#include "smob.h"
	49	#include "alist.h"
	50	#include "debug.h"
	51	#include "hashtab.h"
5c5549cb	52	#include "hash.h"
20e6290e	53	#include "weaks.h"
575888bd	54
20e6290e	55	#include "srcprop.h"
575888bd MD	56	\f
	57	/* {Source Properties}
	58	*
	59	* Properties of source list expressions.
	60	* Five of these have special meaning and optimized storage:
	61	*
	62	* filename string The name of the source file.
	63	* copy list A copy of the list expression.
	64	* line integer The source code line number.
	65	* column integer The source code column number.
	66	* breakpoint boolean Sets a breakpoint on this form.
	67	*
	68	* Most properties above can be set by the reader.
	69	*
	70	*/
	71
a4645b97	72	SCM scm_i_filename;
575888bd	73	SCM scm_i_copy;
a4645b97 MD	74	SCM scm_i_line;
	75	SCM scm_i_column;
	76	SCM scm_i_breakpoint;
575888bd	77
5c5549cb	78	long scm_tc16_srcprops;
575888bd MD	79	static scm_srcprops_chunk *srcprops_chunklist = 0;
	80	static scm_srcprops *srcprops_freelist = 0;
	81
1cc91f1b JB	82
	83	static SCM marksrcprops SCM_P ((SCM obj));
	84
575888bd MD	85	static SCM
	86	marksrcprops (obj)
	87	SCM obj;
575888bd	88	{
575888bd MD	89	scm_gc_mark (SRCPROPFNAME (obj));
	90	scm_gc_mark (SRCPROPCOPY (obj));
	91	return SRCPROPPLIST (obj);
	92	}
	93
1cc91f1b JB	94
	95	static scm_sizet freesrcprops SCM_P ((SCM obj));
	96
575888bd MD	97	static scm_sizet
	98	freesrcprops (obj)
	99	SCM obj;
575888bd MD	100	{
	101	((scm_srcprops *) SCM_CDR (obj)) = srcprops_freelist;
	102	srcprops_freelist = (scm_srcprops *) SCM_CDR (obj);
	103	return 0; /* srcprops_chunks are not freed until leaving guile */
	104	}
	105
1cc91f1b JB	106
	107	static int prinsrcprops SCM_P ((SCM obj, SCM port, scm_print_state *pstate));
	108
575888bd	109	static int
19402679	110	prinsrcprops (obj, port, pstate)
575888bd MD	111	SCM obj;
575888bd MD	112	SCM port;
19402679	113	scm_print_state *pstate;
575888bd	114	{
19402679	115	int writingp = SCM_WRITINGP (pstate);
b7f3516f	116	scm_puts ("#<srcprops ", port);
19402679 MD	117	SCM_SET_WRITINGP (pstate, 1);
	118	scm_iprin1 (scm_srcprops_to_plist (obj), port, pstate);
	119	SCM_SET_WRITINGP (pstate, writingp);
b7f3516f	120	scm_putc ('>', port);
575888bd MD	121	return 1;
	122	}
	123
	124	static scm_smobfuns srcpropssmob =
	125	{marksrcprops, freesrcprops, prinsrcprops, 0};
	126
1cc91f1b	127
575888bd	128	SCM
5c5549cb	129	scm_make_srcprops (line, col, filename, copy, plist)
575888bd MD	130	int line;
	131	int col;
	132	SCM filename;
	133	SCM copy;
	134	SCM plist;
575888bd MD	135	{
	136	register SCM ans;
	137	register scm_srcprops *ptr;
	138	SCM_DEFER_INTS;
	139	if ((ptr = srcprops_freelist) != NULL)
	140	srcprops_freelist = (scm_srcprops *)ptr;
	141	else
	142	{
	143	int i;
	144	scm_srcprops_chunk *mem;
	145	scm_sizet n = sizeof (scm_srcprops_chunk)
	146	+ sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
	147	SCM_SYSCALL (mem = (scm_srcprops_chunk *) malloc (n));
	148	SCM_ASSERT (mem, SCM_UNDEFINED, SCM_NALLOC, "srcprops");
	149	scm_mallocated += n;
	150	mem->next = srcprops_chunklist;
	151	srcprops_chunklist = mem;
	152	ptr = &mem->srcprops[0];
	153	for (i = 1; i < SRCPROPS_CHUNKSIZE - 1; ++i)
	154	(scm_srcprops *)&ptr[i] = &ptr[i + 1];
	155	(scm_srcprops *)&ptr[SRCPROPS_CHUNKSIZE - 1] = 0;
	156	srcprops_freelist = (scm_srcprops *) &ptr[1];
	157	}
	158	SCM_NEWCELL (ans);
a6c64c3c	159	SCM_SETCAR (ans, scm_tc16_srcprops);
575888bd MD	160	ptr->pos = SRCPROPMAKPOS (line, col);
	161	ptr->fname = filename;
	162	ptr->copy = copy;
	163	ptr->plist = plist;
a6c64c3c	164	SCM_SETCDR (ans, (SCM) ptr);
575888bd MD	165	SCM_ALLOW_INTS;
	166	return ans;
	167	}
	168
1cc91f1b	169
575888bd MD	170	SCM
	171	scm_srcprops_to_plist (obj)
	172	SCM obj;
575888bd MD	173	{
	174	SCM plist = SRCPROPPLIST (obj);
	175	if (!SCM_UNBNDP (SRCPROPCOPY (obj)))
	176	plist = scm_acons (scm_i_copy, SRCPROPCOPY (obj), plist);
	177	if (!SCM_UNBNDP (SRCPROPFNAME (obj)))
	178	plist = scm_acons (scm_i_filename, SRCPROPFNAME (obj), plist);
	179	plist = scm_acons (scm_i_column, SCM_MAKINUM (SRCPROPCOL (obj)), plist);
	180	plist = scm_acons (scm_i_line, SCM_MAKINUM (SRCPROPLINE (obj)), plist);
	181	plist = scm_acons (scm_i_breakpoint, SRCPROPBRK (obj), plist);
	182	return plist;
	183	}
	184
	185	SCM_PROC (s_source_properties, "source-properties", 1, 0, 0, scm_source_properties);
1cc91f1b	186
575888bd MD	187	SCM
	188	scm_source_properties (obj)
	189	SCM obj;
575888bd MD	190	{
575888bd MD	191	SCM p;
a4645b97	192	SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_source_properties);
575888bd	193	if (SCM_MEMOIZEDP (obj))
a4645b97 MD	194	obj = SCM_MEMOIZED_EXP (obj);
	195	#ifndef SCM_RECKLESS
	196	else if (SCM_NCONSP (obj))
	197	scm_wrong_type_arg (s_source_properties, 1, obj);
	198	#endif
575888bd MD	199	p = scm_hashq_ref (scm_source_whash, obj, (SCM) NULL);
	200	if (p != (SCM) NULL && SRCPROPSP (p))
	201	return scm_srcprops_to_plist (p);
	202	return SCM_EOL;
	203	}
	204
	205	/* Perhaps this procedure should look through an alist
	206	and try to make a srcprops-object...? */
	207	SCM_PROC (s_set_source_properties_x, "set-source-properties!", 2, 0, 0, scm_set_source_properties_x);
1cc91f1b	208
575888bd MD	209	SCM
	210	scm_set_source_properties_x (obj, plist)
	211	SCM obj;
	212	SCM plist;
575888bd MD	213	{
575888bd MD	214	SCM handle;
a4645b97	215	SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_set_source_properties_x);
575888bd	216	if (SCM_MEMOIZEDP (obj))
a4645b97 MD	217	obj = SCM_MEMOIZED_EXP (obj);
	218	#ifndef SCM_RECKLESS
	219	else if (SCM_NCONSP (obj))
	220	scm_wrong_type_arg (s_set_source_properties_x, 1, obj);
	221	#endif
575888bd MD	222	handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist);
	223	SCM_SETCDR (handle, plist);
	224	return plist;
	225	}
	226
	227	SCM_PROC (s_source_property, "source-property", 2, 0, 0, scm_source_property);
1cc91f1b	228
575888bd MD	229	SCM
	230	scm_source_property (obj, key)
	231	SCM obj;
	232	SCM key;
575888bd MD	233	{
575888bd MD	234	SCM p;
a4645b97	235	SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_source_property);
575888bd	236	if (SCM_MEMOIZEDP (obj))
a4645b97 MD	237	obj = SCM_MEMOIZED_EXP (obj);
	238	#ifndef SCM_RECKLESS
	239	else if (SCM_NCONSP (obj))
	240	scm_wrong_type_arg (s_source_property, 1, obj);
	241	#endif
575888bd MD	242	p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
	243	if (SCM_IMP (p) \|\| !SRCPROPSP (p))
	244	goto plist;
	245	if (scm_i_breakpoint == key) p = SRCPROPBRK (p);
	246	else if (scm_i_line == key) p = SCM_MAKINUM (SRCPROPLINE (p));
	247	else if (scm_i_column == key) p = SCM_MAKINUM (SRCPROPCOL (p));
	248	else if (scm_i_filename == key) p = SRCPROPFNAME (p);
	249	else if (scm_i_copy == key) p = SRCPROPCOPY (p);
	250	else
	251	{
	252	p = SRCPROPPLIST (p);
	253	plist:
	254	p = scm_assoc (key, p);
	255	return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F);
	256	}
	257	return SCM_UNBNDP (p) ? SCM_BOOL_F : p;
	258	}
	259
	260	SCM_PROC (s_set_source_property_x, "set-source-property!", 3, 0, 0, scm_set_source_property_x);
1cc91f1b	261
575888bd MD	262	SCM
	263	scm_set_source_property_x (obj, key, datum)
	264	SCM obj;
	265	SCM key;
	266	SCM datum;
575888bd MD	267	{
	268	scm_whash_handle h;
	269	SCM p;
a4645b97	270	SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_set_source_property_x);
575888bd	271	if (SCM_MEMOIZEDP (obj))
a4645b97 MD	272	obj = SCM_MEMOIZED_EXP (obj);
	273	#ifndef SCM_RECKLESS
	274	else if (SCM_NCONSP (obj))
	275	scm_wrong_type_arg (s_set_source_property_x, 1, obj);
	276	#endif
575888bd MD	277	h = scm_whash_get_handle (scm_source_whash, obj);
	278	if (SCM_WHASHFOUNDP (h))
	279	p = SCM_WHASHREF (scm_source_whash, h);
	280	else
	281	{
	282	h = scm_whash_create_handle (scm_source_whash, obj);
	283	p = SCM_EOL;
	284	}
	285	if (scm_i_breakpoint == key)
cda139a7 MD	286	{
	287	if (SCM_FALSEP (datum))
	288	CLEARSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
	289	? p
	290	: SCM_WHASHSET (scm_source_whash, h,
	291	scm_make_srcprops (0,
	292	0,
	293	SCM_UNDEFINED,
	294	SCM_UNDEFINED,
	295	p)));
	296	else
	297	SETSRCPROPBRK (SCM_NIMP (p) && SRCPROPSP (p)
575888bd MD	298	? p
575888bd MD	299	: SCM_WHASHSET (scm_source_whash, h,
cda139a7 MD	300	scm_make_srcprops (0,
	301	0,
	302	SCM_UNDEFINED,
	303	SCM_UNDEFINED,
	304	p)));
	305	}
575888bd MD	306	else if (scm_i_line == key)
	307	{
	308	if (SCM_NIMP (p) && SRCPROPSP (p))
	309	SETSRCPROPLINE (p, datum);
	310	else
	311	SCM_WHASHSET (scm_source_whash, h,
5c5549cb	312	scm_make_srcprops (datum, 0, SCM_UNDEFINED, SCM_UNDEFINED, p));
575888bd MD	313	}
	314	else if (scm_i_column == key)
	315	{
	316	if (SCM_NIMP (p) && SRCPROPSP (p))
	317	SETSRCPROPCOL (p, datum);
	318	else
	319	SCM_WHASHSET (scm_source_whash, h,
5c5549cb	320	scm_make_srcprops (0, datum, SCM_UNDEFINED, SCM_UNDEFINED, p));
575888bd MD	321	}
	322	else if (scm_i_filename == key)
	323	{
	324	if (SCM_NIMP (p) && SRCPROPSP (p))
	325	SRCPROPFNAME (p) = datum;
	326	else
5c5549cb	327	SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, datum, SCM_UNDEFINED, p));
575888bd MD	328	}
	329	else if (scm_i_filename == key)
	330	{
	331	if (SCM_NIMP (p) && SRCPROPSP (p))
	332	SRCPROPCOPY (p) = datum;
	333	else
5c5549cb	334	SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p));
575888bd MD	335	}
	336	else
	337	SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p));
	338	return SCM_UNSPECIFIED;
	339	}
	340
1cc91f1b	341
575888bd MD	342	void
575888bd MD	343	scm_init_srcprop ()
575888bd	344	{
5c5549cb MD	345	scm_tc16_srcprops = scm_newsmob (&srcpropssmob);
5c5549cb MD	346	scm_source_whash = scm_make_weak_key_hash_table (SCM_MAKINUM (2047));
575888bd MD	347
	348	scm_i_filename = SCM_CAR (scm_sysintern ("filename", SCM_UNDEFINED));
	349	scm_i_copy = SCM_CAR (scm_sysintern ("copy", SCM_UNDEFINED));
	350	scm_i_line = SCM_CAR (scm_sysintern ("line", SCM_UNDEFINED));
	351	scm_i_column = SCM_CAR (scm_sysintern ("column", SCM_UNDEFINED));
	352	scm_i_breakpoint = SCM_CAR (scm_sysintern ("breakpoint", SCM_UNDEFINED));
	353
	354	scm_sysintern ("source-whash", scm_source_whash);
	355	#include "srcprop.x"
	356	}
	357
	358	void
	359	scm_finish_srcprop ()
	360	{
	361	register scm_srcprops_chunk ptr = srcprops_chunklist, next;
	362	while (ptr)
	363	{
	364	next = ptr->next;
	365	free ((char *) ptr);
	366	scm_mallocated -= sizeof (scm_srcprops_chunk)
	367	+ sizeof (scm_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
5c5549cb	368	ptr = next;
575888bd MD	369	}
575888bd MD	370	}