#include "libguile/ports.h"
#include "libguile/root.h"
#include "libguile/weaks.h"
+#include "libguile/gc.h"
#include "libguile/validate.h"
#include "libguile/srcprop.h"
* car = tag
* cbr = pos
* ccr = copy
- * cdr = plist
+ * cdr = alist
*/
#define SRCPROPSP(p) (SCM_SMOB_PREDICATE (scm_tc16_srcprops, (p)))
#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 SRCPROPALIST(p) (SCM_CELL_OBJECT_3(p))
#define SETSRCPROPBRK(p) \
(SCM_SET_SMOB_FLAGS ((p), \
SCM_SMOB_FLAGS (p) | SCM_SOURCE_PROPERTY_FLAG_BREAK))
#define SETSRCPROPLINE(p, l) SETSRCPROPPOS (p, l, SRCPROPCOL (p))
#define SETSRCPROPCOL(p, c) SETSRCPROPPOS (p, SRCPROPLINE (p), c)
#define SETSRCPROPCOPY(p, c) (SCM_SET_CELL_WORD(p, 2, c))
-#define SETSRCPROPPLIST(p, l) (SCM_SET_CELL_WORD(p, 3, l))
+#define SETSRCPROPALIST(p, l) (SCM_SET_CELL_WORD(p, 3, l))
+static SCM scm_srcprops_to_alist (SCM obj);
-scm_t_bits scm_tc16_srcprops;
-static SCM
-srcprops_mark (SCM obj)
-{
- scm_gc_mark (SRCPROPCOPY (obj));
- return SRCPROPPLIST (obj);
-}
+scm_t_bits scm_tc16_srcprops;
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_iprin1 (scm_srcprops_to_alist (obj), port, pstate);
SCM_SET_WRITINGP (pstate, writingp);
scm_putc ('>', port);
return 1;
/*
- * We remember the last file name settings, so we can share that plist
+ * We remember the last file name settings, so we can share that alist
* entry. This works because scm_set_source_property_x does not use
- * assoc-set! for modifying the plist.
+ * assoc-set! for modifying the alist.
*
* This variable contains a protected cons, whose cdr is the cached
- * plist
+ * alist
*/
-static SCM scm_last_plist_filename;
+static SCM scm_last_alist_filename;
SCM
-scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM plist)
+scm_make_srcprops (long line, int col, SCM filename, SCM copy, SCM alist)
{
if (!SCM_UNBNDP (filename))
{
- SCM old_plist = plist;
+ SCM old_alist = alist;
/*
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 last_acons = SCM_CDR (scm_last_alist_filename);
+ if (old_alist == SCM_EOL
&& SCM_CDAR (last_acons) == filename)
{
- plist = last_acons;
+ alist = last_acons;
}
else
{
- plist = scm_acons (scm_sym_filename, filename, plist);
- if (old_plist == SCM_EOL)
- SCM_SETCDR (scm_last_plist_filename, plist);
+ alist = scm_acons (scm_sym_filename, filename, alist);
+ if (old_alist == SCM_EOL)
+ SCM_SETCDR (scm_last_alist_filename, alist);
}
}
SCM_RETURN_NEWSMOB3 (scm_tc16_srcprops,
SRCPROPMAKPOS (line, col),
copy,
- plist);
+ alist);
}
-SCM
-scm_srcprops_to_plist (SCM obj)
+static SCM
+scm_srcprops_to_alist (SCM obj)
{
- SCM plist = SRCPROPPLIST (obj);
+ SCM alist = SRCPROPALIST (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;
+ alist = scm_acons (scm_sym_copy, SRCPROPCOPY (obj), alist);
+ alist = scm_acons (scm_sym_column, scm_from_int (SRCPROPCOL (obj)), alist);
+ alist = scm_acons (scm_sym_line, scm_from_int (SRCPROPLINE (obj)), alist);
+ alist = scm_acons (scm_sym_breakpoint, scm_from_bool (SRCPROPBRK (obj)), alist);
+ return alist;
}
SCM_DEFINE (scm_source_properties, "source-properties", 1, 0, 0,
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);
+ return scm_srcprops_to_alist (p);
else
/* list from set-source-properties!, or SCM_EOL for not found */
return p;
/* 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"
+ (SCM obj, SCM alist),
+ "Install the association list @var{alist} as the source property\n"
"list for @var{obj}.")
#define FUNC_NAME s_scm_set_source_properties_x
{
SCM handle;
+ long line = 0, col = 0;
+ SCM fname = SCM_UNDEFINED, copy = SCM_UNDEFINED, breakpoint = SCM_BOOL_F;
+ SCM others = SCM_EOL;
+ SCM *others_cdrloc = &others;
+ int need_srcprops = 0;
+ SCM tail, key;
+
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;
+
+ tail = alist;
+ while (!scm_is_null (tail))
+ {
+ key = SCM_CAAR (tail);
+ if (scm_is_eq (key, scm_sym_line))
+ {
+ line = scm_to_long (SCM_CDAR (tail));
+ need_srcprops = 1;
+ }
+ else if (scm_is_eq (key, scm_sym_column))
+ {
+ col = scm_to_long (SCM_CDAR (tail));
+ need_srcprops = 1;
+ }
+ else if (scm_is_eq (key, scm_sym_filename))
+ {
+ fname = SCM_CDAR (tail);
+ need_srcprops = 1;
+ }
+ else if (scm_is_eq (key, scm_sym_copy))
+ {
+ copy = SCM_CDAR (tail);
+ need_srcprops = 1;
+ }
+ else if (scm_is_eq (key, scm_sym_breakpoint))
+ {
+ breakpoint = SCM_CDAR (tail);
+ need_srcprops = 1;
+ }
+ else
+ {
+ /* Do we allocate here, or clobber the caller's alist?
+
+ Source properties aren't supposed to be used for anything
+ except the special properties above, so the mainline case
+ is that we never execute this else branch, and hence it
+ doesn't matter much.
+
+ We choose allocation here, as that seems safer.
+ */
+ *others_cdrloc = scm_cons (scm_cons (key, SCM_CDAR (tail)),
+ SCM_EOL);
+ others_cdrloc = SCM_CDRLOC (*others_cdrloc);
+ }
+ tail = SCM_CDR (tail);
+ }
+ if (need_srcprops)
+ {
+ alist = scm_make_srcprops (line, col, fname, copy, others);
+ if (scm_is_true (breakpoint))
+ SETSRCPROPBRK (alist);
+ }
+ else
+ alist = others;
+
+ handle = scm_hashq_create_handle_x (scm_source_whash, obj, alist);
+ SCM_SETCDR (handle, alist);
+ return alist;
}
#undef FUNC_NAME
SCM_WRONG_TYPE_ARG (1, obj);
p = scm_hashq_ref (scm_source_whash, obj, SCM_EOL);
if (!SRCPROPSP (p))
- goto plist;
+ goto alist;
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 = SRCPROPALIST (p);
+ alist:
p = scm_assoc (key, p);
return (SCM_NIMP (p) ? SCM_CDR (p) : SCM_BOOL_F);
}
else
{
if (SRCPROPSP (p))
- SETSRCPROPPLIST (p, scm_acons (key, datum, SRCPROPPLIST (p)));
+ SETSRCPROPALIST (p, scm_acons (key, datum, SRCPROPALIST (p)));
else
SCM_WHASHSET (scm_source_whash, h, scm_acons (key, datum, p));
}
#undef FUNC_NAME
+SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0,
+ (SCM xorig, SCM x, SCM y),
+ "Create and return a new pair whose car and cdr are @var{x} and @var{y}.\n"
+ "Any source properties associated with @var{xorig} are also associated\n"
+ "with the new pair.")
+#define FUNC_NAME s_scm_cons_source
+{
+ SCM p, z;
+ z = scm_cons (x, y);
+ /* Copy source properties possibly associated with xorig. */
+ p = scm_whash_lookup (scm_source_whash, xorig);
+ if (scm_is_true (p))
+ scm_whash_insert (scm_source_whash, z, p);
+ return z;
+}
+#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_last_alist_filename
= scm_permanent_object (scm_cons (SCM_EOL,
scm_acons (SCM_EOL, SCM_EOL, SCM_EOL)));
HCoop / bpt / guile.git / blobdiff