mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
339 lines
9.7 KiB
C
339 lines
9.7 KiB
C
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 Free Software Foundation
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2.1 of the License, or (at your option) any later version.
|
||
*
|
||
* This library 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
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library; if not, write to the Free Software
|
||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
*/
|
||
|
||
|
||
|
||
|
||
#include <errno.h>
|
||
|
||
#include "libguile/_scm.h"
|
||
#include "libguile/async.h"
|
||
#include "libguile/smob.h"
|
||
#include "libguile/alist.h"
|
||
#include "libguile/debug.h"
|
||
#include "libguile/hashtab.h"
|
||
#include "libguile/hash.h"
|
||
#include "libguile/ports.h"
|
||
#include "libguile/root.h"
|
||
#include "libguile/weaks.h"
|
||
|
||
#include "libguile/validate.h"
|
||
#include "libguile/srcprop.h"
|
||
|
||
/* {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_GLOBAL_SYMBOL (scm_sym_filename, "filename");
|
||
SCM_GLOBAL_SYMBOL (scm_sym_copy, "copy");
|
||
SCM_GLOBAL_SYMBOL (scm_sym_line, "line");
|
||
SCM_GLOBAL_SYMBOL (scm_sym_column, "column");
|
||
SCM_GLOBAL_SYMBOL (scm_sym_breakpoint, "breakpoint");
|
||
|
||
scm_t_bits scm_tc16_srcprops;
|
||
static scm_t_srcprops_chunk *srcprops_chunklist = 0;
|
||
static scm_t_srcprops *srcprops_freelist = 0;
|
||
|
||
|
||
static SCM
|
||
srcprops_mark (SCM obj)
|
||
{
|
||
scm_gc_mark (SRCPROPFNAME (obj));
|
||
scm_gc_mark (SRCPROPCOPY (obj));
|
||
return SRCPROPPLIST (obj);
|
||
}
|
||
|
||
|
||
static size_t
|
||
srcprops_free (SCM obj)
|
||
{
|
||
*((scm_t_srcprops **) SCM_SMOB_DATA (obj)) = srcprops_freelist;
|
||
srcprops_freelist = (scm_t_srcprops *) SCM_SMOB_DATA (obj);
|
||
return 0; /* srcprops_chunks are not freed until leaving guile */
|
||
}
|
||
|
||
|
||
static int
|
||
srcprops_print (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;
|
||
}
|
||
|
||
|
||
int
|
||
scm_c_source_property_breakpoint_p (SCM form)
|
||
{
|
||
SCM obj = scm_whash_lookup (scm_source_whash, form);
|
||
return SRCPROPSP (obj) && SRCPROPBRK (obj);
|
||
}
|
||
|
||
|
||
SCM
|
||
scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM plist)
|
||
{
|
||
register scm_t_srcprops *ptr;
|
||
SCM_CRITICAL_SECTION_START;
|
||
if ((ptr = srcprops_freelist) != NULL)
|
||
srcprops_freelist = *(scm_t_srcprops **)ptr;
|
||
else
|
||
{
|
||
size_t i;
|
||
scm_t_srcprops_chunk *mem;
|
||
size_t n = sizeof (scm_t_srcprops_chunk)
|
||
+ sizeof (scm_t_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
|
||
SCM_SYSCALL (mem = (scm_t_srcprops_chunk *) scm_malloc (n));
|
||
if (mem == NULL)
|
||
scm_memory_error ("srcprops");
|
||
scm_gc_register_collectable_memory (mem, n, "srcprops");
|
||
|
||
mem->next = srcprops_chunklist;
|
||
srcprops_chunklist = mem;
|
||
ptr = &mem->srcprops[0];
|
||
for (i = 1; i < SRCPROPS_CHUNKSIZE - 1; ++i)
|
||
*(scm_t_srcprops **)&ptr[i] = &ptr[i + 1];
|
||
*(scm_t_srcprops **)&ptr[SRCPROPS_CHUNKSIZE - 1] = 0;
|
||
srcprops_freelist = (scm_t_srcprops *) &ptr[1];
|
||
}
|
||
ptr->pos = SRCPROPMAKPOS (line, col);
|
||
ptr->fname = filename;
|
||
ptr->copy = copy;
|
||
ptr->plist = plist;
|
||
SCM_CRITICAL_SECTION_END;
|
||
SCM_RETURN_NEWSMOB (scm_tc16_srcprops, ptr);
|
||
}
|
||
|
||
|
||
SCM
|
||
scm_srcprops_to_plist (SCM obj)
|
||
{
|
||
SCM plist = SRCPROPPLIST (obj);
|
||
if (!SCM_UNBNDP (SRCPROPCOPY (obj)))
|
||
plist = scm_acons (scm_sym_copy, SRCPROPCOPY (obj), plist);
|
||
if (!SCM_UNBNDP (SRCPROPFNAME (obj)))
|
||
plist = scm_acons (scm_sym_filename, SRCPROPFNAME (obj), plist);
|
||
plist = scm_acons (scm_sym_column, scm_from_int (SRCPROPCOL (obj)), plist);
|
||
plist = scm_acons (scm_sym_line, scm_from_int (SRCPROPLINE (obj)), plist);
|
||
plist = scm_acons (scm_sym_breakpoint, scm_from_bool (SRCPROPBRK (obj)), plist);
|
||
return plist;
|
||
}
|
||
|
||
SCM_DEFINE (scm_source_properties, "source-properties", 1, 0, 0,
|
||
(SCM obj),
|
||
"Return the source property association list of @var{obj}.")
|
||
#define FUNC_NAME s_scm_source_properties
|
||
{
|
||
SCM p;
|
||
SCM_VALIDATE_NIM (1, obj);
|
||
if (SCM_MEMOIZEDP (obj))
|
||
obj = SCM_MEMOIZED_EXP (obj);
|
||
else if (!scm_is_pair (obj))
|
||
SCM_WRONG_TYPE_ARG (1, obj);
|
||
p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
|
||
if (SRCPROPSP (p))
|
||
return scm_srcprops_to_plist (p);
|
||
else
|
||
/* list from set-source-properties!, or SCM_EOL for not found */
|
||
return p;
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
/* Perhaps this procedure should look through an alist
|
||
and try to make a srcprops-object...? */
|
||
SCM_DEFINE (scm_set_source_properties_x, "set-source-properties!", 2, 0, 0,
|
||
(SCM obj, SCM plist),
|
||
"Install the association list @var{plist} as the source property\n"
|
||
"list for @var{obj}.")
|
||
#define FUNC_NAME s_scm_set_source_properties_x
|
||
{
|
||
SCM handle;
|
||
SCM_VALIDATE_NIM (1, obj);
|
||
if (SCM_MEMOIZEDP (obj))
|
||
obj = SCM_MEMOIZED_EXP (obj);
|
||
else if (!scm_is_pair (obj))
|
||
SCM_WRONG_TYPE_ARG(1, obj);
|
||
handle = scm_hashq_create_handle_x (scm_source_whash, obj, plist);
|
||
SCM_SETCDR (handle, plist);
|
||
return plist;
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
SCM_DEFINE (scm_source_property, "source-property", 2, 0, 0,
|
||
(SCM obj, SCM key),
|
||
"Return the source property specified by @var{key} from\n"
|
||
"@var{obj}'s source property list.")
|
||
#define FUNC_NAME s_scm_source_property
|
||
{
|
||
SCM p;
|
||
SCM_VALIDATE_NIM (1, obj);
|
||
if (SCM_MEMOIZEDP (obj))
|
||
obj = SCM_MEMOIZED_EXP (obj);
|
||
else if (!scm_is_pair (obj))
|
||
SCM_WRONG_TYPE_ARG (1, obj);
|
||
p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
|
||
if (!SRCPROPSP (p))
|
||
goto plist;
|
||
if (scm_is_eq (scm_sym_breakpoint, key)) p = scm_from_bool (SRCPROPBRK (p));
|
||
else if (scm_is_eq (scm_sym_line, key)) p = scm_from_int (SRCPROPLINE (p));
|
||
else if (scm_is_eq (scm_sym_column, key)) p = scm_from_int (SRCPROPCOL (p));
|
||
else if (scm_is_eq (scm_sym_filename, key)) p = SRCPROPFNAME (p);
|
||
else if (scm_is_eq (scm_sym_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;
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
SCM_DEFINE (scm_set_source_property_x, "set-source-property!", 3, 0, 0,
|
||
(SCM obj, SCM key, SCM datum),
|
||
"Set the source property of object @var{obj}, which is specified by\n"
|
||
"@var{key} to @var{datum}. Normally, the key will be a symbol.")
|
||
#define FUNC_NAME s_scm_set_source_property_x
|
||
{
|
||
scm_whash_handle h;
|
||
SCM p;
|
||
SCM_VALIDATE_NIM (1, obj);
|
||
if (SCM_MEMOIZEDP (obj))
|
||
obj = SCM_MEMOIZED_EXP (obj);
|
||
else if (!scm_is_pair (obj))
|
||
SCM_WRONG_TYPE_ARG (1, obj);
|
||
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_is_eq (scm_sym_breakpoint, key))
|
||
{
|
||
if (SRCPROPSP (p))
|
||
{
|
||
if (scm_is_false (datum))
|
||
CLEARSRCPROPBRK (p);
|
||
else
|
||
SETSRCPROPBRK (p);
|
||
}
|
||
else
|
||
{
|
||
SCM sp = scm_make_srcprops (0, 0, SCM_UNDEFINED, SCM_UNDEFINED, p);
|
||
SCM_WHASHSET (scm_source_whash, h, sp);
|
||
if (scm_is_false (datum))
|
||
CLEARSRCPROPBRK (sp);
|
||
else
|
||
SETSRCPROPBRK (sp);
|
||
}
|
||
}
|
||
else if (scm_is_eq (scm_sym_line, key))
|
||
{
|
||
if (SRCPROPSP (p))
|
||
SETSRCPROPLINE (p, scm_to_int (datum));
|
||
else
|
||
SCM_WHASHSET (scm_source_whash, h,
|
||
scm_make_srcprops (scm_to_int (datum), 0,
|
||
SCM_UNDEFINED, SCM_UNDEFINED, p));
|
||
}
|
||
else if (scm_is_eq (scm_sym_column, key))
|
||
{
|
||
if (SRCPROPSP (p))
|
||
SETSRCPROPCOL (p, scm_to_int (datum));
|
||
else
|
||
SCM_WHASHSET (scm_source_whash, h,
|
||
scm_make_srcprops (0, scm_to_int (datum),
|
||
SCM_UNDEFINED, SCM_UNDEFINED, p));
|
||
}
|
||
else if (scm_is_eq (scm_sym_filename, key))
|
||
{
|
||
if (SRCPROPSP (p))
|
||
SRCPROPFNAME (p) = datum;
|
||
else
|
||
SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, datum, SCM_UNDEFINED, p));
|
||
}
|
||
else if (scm_is_eq (scm_sym_copy, key))
|
||
{
|
||
if (SRCPROPSP (p))
|
||
SRCPROPCOPY (p) = datum;
|
||
else
|
||
SCM_WHASHSET (scm_source_whash, h, scm_make_srcprops (0, 0, SCM_UNDEFINED, datum, p));
|
||
}
|
||
else
|
||
{
|
||
if (SRCPROPSP (p))
|
||
SRCPROPPLIST (p) = scm_acons (key, datum, SRCPROPPLIST (p));
|
||
else
|
||
SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p));
|
||
}
|
||
return SCM_UNSPECIFIED;
|
||
}
|
||
#undef FUNC_NAME
|
||
|
||
|
||
void
|
||
scm_init_srcprop ()
|
||
{
|
||
scm_tc16_srcprops = scm_make_smob_type ("srcprops", 0);
|
||
scm_set_smob_mark (scm_tc16_srcprops, srcprops_mark);
|
||
scm_set_smob_free (scm_tc16_srcprops, srcprops_free);
|
||
scm_set_smob_print (scm_tc16_srcprops, srcprops_print);
|
||
|
||
scm_source_whash = scm_make_weak_key_hash_table (scm_from_int (2047));
|
||
scm_c_define ("source-whash", scm_source_whash);
|
||
|
||
#include "libguile/srcprop.x"
|
||
}
|
||
|
||
void
|
||
scm_finish_srcprop ()
|
||
{
|
||
register scm_t_srcprops_chunk *ptr = srcprops_chunklist, *next;
|
||
size_t n= sizeof (scm_t_srcprops_chunk)
|
||
+ sizeof (scm_t_srcprops) * (SRCPROPS_CHUNKSIZE - 1);
|
||
while (ptr)
|
||
{
|
||
next = ptr->next;
|
||
scm_gc_unregister_collectable_memory (ptr, n, "srcprops");
|
||
free ((char *) ptr);
|
||
ptr = next;
|
||
}
|
||
}
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|