mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 03:40:34 +02:00
b0763985c4
filename in the plist, and share between srcprops if possible. Remove specialized storage. * srcprop.h: remove macros without SCM_ prefix from interface. Remove specialized storage/type definitions. * eval.c: terminate option lists with 0.
341 lines
9.4 KiB
C
341 lines
9.4 KiB
C
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002, 2006 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:
|
||
*
|
||
* 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");
|
||
|
||
|
||
|
||
/*
|
||
layout:
|
||
|
||
car = tag
|
||
cbr = pos
|
||
ccr = copy
|
||
cdr = plist
|
||
*/
|
||
|
||
#define SRCPROPSP(p) (SCM_SMOB_PREDICATE (scm_tc16_srcprops, (p)))
|
||
#define SRCPROPBRK(p) (SCM_SMOB_FLAGS (p) & SCM_SOURCE_PROPERTY_FLAG_BREAK)
|
||
#define SRCPROPPOS(p) (SCM_CELL_WORD(p,1))
|
||
#define SRCPROPLINE(p) (SRCPROPPOS(p) >> 12)
|
||
#define SRCPROPCOL(p) (SRCPROPPOS(p) & 0x0fffL)
|
||
#define SRCPROPCOPY(p) (SCM_CELL_OBJECT(p,2))
|
||
#define SRCPROPPLIST(p) (SCM_CELL_OBJECT_3(p))
|
||
#define SETSRCPROPBRK(p) \
|
||
(SCM_SET_SMOB_FLAGS ((p), \
|
||
SCM_SMOB_FLAGS (p) | SCM_SOURCE_PROPERTY_FLAG_BREAK))
|
||
#define CLEARSRCPROPBRK(p) \
|
||
(SCM_SET_SMOB_FLAGS ((p), \
|
||
SCM_SMOB_FLAGS (p) & ~SCM_SOURCE_PROPERTY_FLAG_BREAK))
|
||
#define SRCPROPMAKPOS(l, c) (((l) << 12) + (c))
|
||
#define SETSRCPROPPOS(p, l, c) (SCM_SET_CELL_WORD(p,1, SRCPROPMAKPOS (l, c)))
|
||
#define SETSRCPROPLINE(p, l) SETSRCPROPPOS (p, l, SRCPROPCOL (p))
|
||
#define SETSRCPROPCOL(p, c) SETSRCPROPPOS (p, SRCPROPLINE (p), c)
|
||
|
||
|
||
|
||
scm_t_bits scm_tc16_srcprops;
|
||
|
||
static SCM
|
||
srcprops_mark (SCM obj)
|
||
{
|
||
scm_gc_mark (SRCPROPCOPY (obj));
|
||
return SRCPROPPLIST (obj);
|
||
}
|
||
|
||
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);
|
||
}
|
||
|
||
|
||
/*
|
||
A protected cells whose cdr contains the last plist
|
||
used if plist contains only the filename.
|
||
|
||
This works because scm_set_source_property_x does
|
||
not use assoc-set! for modifying the plist.
|
||
*/
|
||
static SCM scm_last_plist_filename;
|
||
|
||
SCM
|
||
scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM plist)
|
||
{
|
||
if (!SCM_UNBNDP (filename))
|
||
{
|
||
SCM old_plist = plist;
|
||
|
||
/*
|
||
have to extract the acons, and operate on that, for
|
||
thread safety.
|
||
*/
|
||
SCM last_acons = SCM_CDR (scm_last_plist_filename);
|
||
if (old_plist == SCM_EOL
|
||
&& SCM_CDAR (last_acons) == filename)
|
||
{
|
||
plist = last_acons;
|
||
}
|
||
else
|
||
{
|
||
plist = scm_acons (scm_sym_filename, filename, plist);
|
||
if (old_plist == SCM_EOL)
|
||
SCM_SETCDR (scm_last_plist_filename, plist);
|
||
}
|
||
}
|
||
|
||
SCM_RETURN_NEWSMOB3 (scm_tc16_srcprops,
|
||
SRCPROPMAKPOS (line, col),
|
||
copy,
|
||
plist);
|
||
}
|
||
|
||
|
||
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);
|
||
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_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_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_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);
|
||
|
||
scm_last_plist_filename
|
||
= scm_permanent_object (scm_cons (SCM_EOL,
|
||
scm_acons (SCM_EOL, SCM_EOL, SCM_EOL)));
|
||
|
||
#include "libguile/srcprop.x"
|
||
}
|
||
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|