#include "console.h"
#include "elhash.h"
+#include <stddef.h>
+
Lisp_Object Qad_advice_info, Qad_activate;
Lisp_Object Qget_value, Qset_value, Qbound_predicate, Qmake_unbound;
Lisp_Object follow_past_lisp_magic);
\f
-#ifdef LRECORD_SYMBOL
-
static Lisp_Object
mark_symbol (Lisp_Object obj, void (*markobj) (Lisp_Object))
{
markobj (sym->value);
markobj (sym->function);
- /* No need to mark through ->obarray, because it only holds nil or t. */
- /* markobj (sym->obarray);*/
XSETSTRING (pname, sym->name);
markobj (pname);
if (!symbol_next (sym))
}
}
+static const struct lrecord_description symbol_description[] = {
+ { XD_LISP_OBJECT, offsetof(struct Lisp_Symbol, next), 5 }
+};
+
DEFINE_BASIC_LRECORD_IMPLEMENTATION ("symbol", symbol,
mark_symbol, print_symbol, 0, 0, 0,
- struct Lisp_Symbol);
-#endif /* LRECORD_SYMBOL */
+ symbol_description, struct Lisp_Symbol);
\f
/**********************************************************************/
return tem;
}
- return Fintern ((purify_flag
- ? make_pure_pname (buf, len, 0)
- : make_string (buf, len)),
- obarray);
+ return Fintern (make_string (buf, len), obarray);
}
DEFUN ("intern", Fintern, 1, 2, 0, /*
*/
(string, obarray))
{
- Lisp_Object sym, *ptr;
+ Lisp_Object object, *ptr;
+ struct Lisp_Symbol *symbol;
Bytecount len;
if (NILP (obarray)) obarray = Vobarray;
CHECK_STRING (string);
len = XSTRING_LENGTH (string);
- sym = oblookup (obarray, XSTRING_DATA (string), len);
- if (!INTP (sym))
+ object = oblookup (obarray, XSTRING_DATA (string), len);
+ if (!INTP (object))
/* Found it */
- return sym;
-
- ptr = &XVECTOR_DATA (obarray)[XINT (sym)];
+ return object;
- if (purify_flag && ! purified (string))
- string = make_pure_pname (XSTRING_DATA (string), len, 0);
- sym = Fmake_symbol (string);
- /* FSFmacs places OBARRAY here, but it is pointless because we do
- not mark through this slot, so it is not usable later (because
- the obarray might have been collected). Marking through the
- ->obarray slot is an even worse idea, because it would keep
- obarrays from being collected because of symbols pointed to them.
+ ptr = &XVECTOR_DATA (obarray)[XINT (object)];
- NOTE: We place Qt here only if OBARRAY is actually Vobarray. It
- is safer to do it this way, to avoid hosing with symbols within
- pure objects. */
- if (EQ (obarray, Vobarray))
- XSYMBOL (sym)->obarray = Qt;
+ object = Fmake_symbol (string);
+ symbol = XSYMBOL (object);
if (SYMBOLP (*ptr))
- symbol_next (XSYMBOL (sym)) = XSYMBOL (*ptr);
+ symbol_next (symbol) = XSYMBOL (*ptr);
else
- symbol_next (XSYMBOL (sym)) = 0;
- *ptr = sym;
- return sym;
+ symbol_next (symbol) = 0;
+ *ptr = object;
+
+ if (string_byte (symbol_name (symbol), 0) == ':' && EQ (obarray, Vobarray))
+ {
+ /* The LISP way is to put keywords in their own package, but we
+ don't have packages, so we do something simpler. Someday,
+ maybe we'll have packages and then this will be reworked.
+ --Stig. */
+ symbol_value (symbol) = object;
+ }
+
+ return object;
}
DEFUN ("intern-soft", Fintern_soft, 1, 2, 0, /*
-Return the canonical symbol whose name is STRING, or nil if none exists.
+Return the canonical symbol named NAME, or nil if none exists.
+NAME may be a string or a symbol. If it is a symbol, that exact
+symbol is searched for.
A second optional argument specifies the obarray to use;
it defaults to the value of `obarray'.
*/
- (string, obarray))
+ (name, obarray))
{
+ /* #### Bug! (intern-soft "nil") returns nil. Perhaps we should
+ add a DEFAULT-IF-NOT-FOUND arg, like in get. */
Lisp_Object tem;
+ struct Lisp_String *string;
if (NILP (obarray)) obarray = Vobarray;
obarray = check_obarray (obarray);
- CHECK_STRING (string);
+ if (!SYMBOLP (name))
+ {
+ CHECK_STRING (name);
+ string = XSTRING (name);
+ }
+ else
+ string = symbol_name (XSYMBOL (name));
- tem = oblookup (obarray, XSTRING_DATA (string), XSTRING_LENGTH (string));
- return !INTP (tem) ? tem : Qnil;
+ tem = oblookup (obarray, string_data (string), string_length (string));
+ if (INTP (tem) || (SYMBOLP (name) && !EQ (name, tem)))
+ return Qnil;
+ else
+ return tem;
}
\f
DEFUN ("unintern", Funintern, 1, 2, 0, /*
*/
(name, obarray))
{
- Lisp_Object string, tem;
+ Lisp_Object tem;
+ struct Lisp_String *string;
int hash;
if (NILP (obarray)) obarray = Vobarray;
obarray = check_obarray (obarray);
if (SYMBOLP (name))
- XSETSTRING (string, XSYMBOL (name)->name);
+ string = symbol_name (XSYMBOL (name));
else
{
CHECK_STRING (name);
- string = name;
+ string = XSTRING (name);
}
- tem = oblookup (obarray, XSTRING_DATA (string), XSTRING_LENGTH (string));
+ tem = oblookup (obarray, string_data (string), string_length (string));
if (INTP (tem))
return Qnil;
/* If arg was a symbol, don't delete anything but that symbol itself. */
}
}
}
- XSYMBOL (tem)->obarray = Qnil;
return Qt;
}
\f
obarray = check_obarray (obarray);
obsize = XVECTOR_LENGTH (obarray);
}
-#if 0 /* FSFmacs */
- /* #### Huh? */
- /* This is sometimes needed in the middle of GC. */
- obsize &= ~ARRAY_MARK_FLAG;
-#endif
hash = hash_string (ptr, size) % obsize;
oblookup_last_bucket_number = hash;
bucket = XVECTOR_DATA (obarray)[hash];
sym);
if (symbol_is_constant (sym, val)
- || (SYMBOL_IS_KEYWORD (sym) && !EQ (newval, sym)
- && !NILP (XSYMBOL (sym)->obarray)))
+ || (SYMBOL_IS_KEYWORD (sym) && !EQ (newval, sym)))
signal_error (Qsetting_constant,
UNBOUNDP (newval) ? list1 (sym) : list2 (sym, newval));
}
write_c_string (buf, printcharfun);
}
+static const struct lrecord_description symbol_value_buffer_local_description[] = {
+ { XD_LISP_OBJECT, offsetof(struct symbol_value_buffer_local, default_value), 4 },
+ { XD_END }
+};
+
+static const struct lrecord_description symbol_value_lisp_magic_description[] = {
+ { XD_LISP_OBJECT, offsetof(struct symbol_value_lisp_magic, handler), 2*MAGIC_HANDLER_MAX+1 },
+ { XD_END }
+};
+
+static const struct lrecord_description symbol_value_varalias_description[] = {
+ { XD_LISP_OBJECT, offsetof(struct symbol_value_varalias, aliasee), 2 },
+ { XD_END }
+};
+
DEFINE_LRECORD_IMPLEMENTATION ("symbol-value-forward",
symbol_value_forward,
this_one_is_unmarkable,
- print_symbol_value_magic, 0, 0, 0,
+ print_symbol_value_magic, 0, 0, 0, 0,
struct symbol_value_forward);
DEFINE_LRECORD_IMPLEMENTATION ("symbol-value-buffer-local",
symbol_value_buffer_local,
mark_symbol_value_buffer_local,
print_symbol_value_magic, 0, 0, 0,
+ symbol_value_buffer_local_description,
struct symbol_value_buffer_local);
DEFINE_LRECORD_IMPLEMENTATION ("symbol-value-lisp-magic",
symbol_value_lisp_magic,
mark_symbol_value_lisp_magic,
print_symbol_value_magic, 0, 0, 0,
+ symbol_value_lisp_magic_description,
struct symbol_value_lisp_magic);
DEFINE_LRECORD_IMPLEMENTATION ("symbol-value-varalias",
symbol_value_varalias,
mark_symbol_value_varalias,
print_symbol_value_magic, 0, 0, 0,
+ symbol_value_varalias_description,
struct symbol_value_varalias);
\f
{
struct symbol_value_buffer_local *bfwd
= alloc_lcrecord_type (struct symbol_value_buffer_local,
- lrecord_symbol_value_buffer_local);
+ &lrecord_symbol_value_buffer_local);
Lisp_Object foo;
bfwd->magic.type = SYMVAL_BUFFER_LOCAL;
/* Make sure variable is set up to hold per-buffer values */
bfwd = alloc_lcrecord_type (struct symbol_value_buffer_local,
- lrecord_symbol_value_buffer_local);
+ &lrecord_symbol_value_buffer_local);
bfwd->magic.type = SYMVAL_SOME_BUFFER_LOCAL;
bfwd->current_buffer = Qnil;
if (!SYMBOL_VALUE_LISP_MAGIC_P (valcontents))
{
bfwd = alloc_lcrecord_type (struct symbol_value_lisp_magic,
- lrecord_symbol_value_lisp_magic);
+ &lrecord_symbol_value_lisp_magic);
bfwd->magic.type = SYMVAL_LISP_MAGIC;
for (i = 0; i < MAGIC_HANDLER_MAX; i++)
{
reject_constant_symbols (variable, Qunbound, 0, Qt);
bfwd = alloc_lcrecord_type (struct symbol_value_varalias,
- lrecord_symbol_value_varalias);
+ &lrecord_symbol_value_varalias);
bfwd->magic.type = SYMVAL_VARALIAS;
bfwd->aliasee = alias;
bfwd->shadowed = valcontents;
{ { symbol_value_forward_lheader_initializer, 0, 69},
SYMVAL_UNBOUND_MARKER };
-Lisp_Object Vpure_uninterned_symbol_table;
-
void
init_symbols_once_early (void)
{
XSETOBJ (Qnull_pointer, (enum Lisp_Type) 0, 0);
#endif
- /* see comment in Fpurecopy() */
- Vpure_uninterned_symbol_table =
- make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
- staticpro (&Vpure_uninterned_symbol_table);
-
- Qnil = Fmake_symbol (make_pure_pname ((CONST Bufbyte *) "nil", 3, 1));
- /* Bootstrapping problem: Qnil isn't set when make_pure_pname is
+ /* Bootstrapping problem: Qnil isn't set when make_string_nocopy is
called the first time. */
+ Qnil = Fmake_symbol (make_string_nocopy ((CONST Bufbyte *) "nil", 3));
XSYMBOL (Qnil)->name->plist = Qnil;
XSYMBOL (Qnil)->value = Qnil; /* Nihil ex nihil */
XSYMBOL (Qnil)->plist = Qnil;
{
int hash = hash_string (string_data (XSYMBOL (Qnil)->name), 3);
XVECTOR_DATA (Vobarray)[hash % OBARRAY_SIZE] = Qnil;
- XSYMBOL (Qnil)->obarray = Qt;
}
{
void
defsymbol (Lisp_Object *location, CONST char *name)
{
- *location = Fintern (make_pure_pname ((CONST Bufbyte *) name,
- strlen (name), 1),
+ *location = Fintern (make_string_nocopy ((CONST Bufbyte *) name,
+ strlen (name)),
Qnil);
staticpro (location);
}
#define check_sane_subr(subr, sym) /* nothing */
#endif
+#ifdef HAVE_SHLIB
+/*
+ * If we are not in a pure undumped Emacs, we need to make a duplicate of
+ * the subr. This is because the only time this function will be called
+ * in a running Emacs is when a dynamically loaded module is adding a
+ * subr, and we need to make sure that the subr is in allocated, Lisp-
+ * accessible memory. The address assigned to the static subr struct
+ * in the shared object will be a trampoline address, so we need to create
+ * a copy here to ensure that a real address is used.
+ *
+ * Once we have copied everything across, we re-use the original static
+ * structure to store a pointer to the newly allocated one. This will be
+ * used in emodules.c by emodules_doc_subr() to find a pointer to the
+ * allocated object so that we can set its doc string propperly.
+ *
+ * NOTE: We dont actually use the DOC pointer here any more, but we did
+ * in an earlier implementation of module support. There is no harm in
+ * setting it here in case we ever need it in future implementations.
+ * subr->doc will point to the new subr structure that was allocated.
+ * Code can then get this value from the statis subr structure and use
+ * it if required.
+ *
+ * FIXME: Should newsubr be staticpro()'ed? I dont think so but I need
+ * a guru to check.
+ */
+#define check_module_subr() \
+do { \
+ if (initialized) { \
+ struct Lisp_Subr *newsubr; \
+ newsubr = (Lisp_Subr *)xmalloc(sizeof(struct Lisp_Subr)); \
+ memcpy (newsubr, subr, sizeof(struct Lisp_Subr)); \
+ subr->doc = (CONST char *)newsubr; \
+ subr = newsubr; \
+ } \
+} while (0)
+#else /* ! HAVE_SHLIB */
+#define check_module_subr()
+#endif
+
void
defsubr (Lisp_Subr *subr)
{
Lisp_Object fun;
check_sane_subr (subr, sym);
+ check_module_subr ();
XSETSUBR (fun, subr);
XSYMBOL (sym)->function = fun;
Lisp_Object fun;
check_sane_subr (subr, sym);
+ check_module_subr();
XSETSUBR (fun, subr);
XSYMBOL (sym)->function = Fcons (Qmacro, fun);
magic = p;
}
- sym = Fintern (make_pure_pname ((CONST Bufbyte *) symbol_name,
- strlen (symbol_name),
- 1),
- Qnil);
+#if defined(HAVE_SHLIB)
+ /*
+ * As with defsubr(), this will only be called in a dumped Emacs when
+ * we are adding variables from a dynamically loaded module. That means
+ * we can't use purespace. Take that into account.
+ */
+ if (initialized)
+ sym = Fintern (build_string (symbol_name), Qnil);
+ else
+#endif
+ sym = Fintern (make_string_nocopy ((CONST Bufbyte *) symbol_name,
+ strlen (symbol_name)), Qnil);
+
XSETOBJ (XSYMBOL (sym)->value, Lisp_Type_Record, magic);
}
projects / chise / xemacs-chise.git.1 / blobdiff