/* Lisp parsing and input streams.
-Copyright (C) 1985-1989, 1993-1995, 1997-2013 Free Software Foundation, Inc.
+Copyright (C) 1985-1989, 1993-1995, 1997-2014 Free Software Foundation,
+Inc.
This file is part of GNU Emacs.
#define file_tell ftell
#endif
+static SCM obarrays;
+
/* Hash table read constants. */
static Lisp_Object Qhash_table, Qdata;
static Lisp_Object Qtest, Qsize;
else
{
c = BUF_FETCH_BYTE (inbuffer, pt_byte);
- if (! ASCII_BYTE_P (c))
+ if (! ASCII_CHAR_P (c))
c = BYTE8_TO_CHAR (c);
pt_byte++;
}
else
{
c = BUF_FETCH_BYTE (inbuffer, bytepos);
- if (! ASCII_BYTE_P (c))
+ if (! ASCII_CHAR_P (c))
c = BYTE8_TO_CHAR (c);
bytepos++;
}
return c;
if (multibyte)
*multibyte = 1;
- if (ASCII_BYTE_P (c))
+ if (ASCII_CHAR_P (c))
return c;
if (emacs_mule_encoding)
return read_emacs_mule_char (c, readbyte, readcharfun);
return value of `get-load-suffixes' is used, i.e. the file name is
required to have a non-empty suffix.
+When searching suffixes, this function normally stops at the first
+one that exists. If the option `load-prefer-newer' is non-nil,
+however, it tries all suffixes, and uses whichever file is the newest.
+
Loading a file records its definitions, and its `provide' and
`require' calls, in an element of `load-history' whose
car is the file name loaded. See `load-history'.
(Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage,
Lisp_Object nosuffix, Lisp_Object must_suffix)
{
- FILE *stream;
+ FILE *stream = NULL;
int fd;
- int fd_index;
- ptrdiff_t count = SPECPDL_INDEX ();
+ dynwind_begin ();
struct gcpro gcpro1, gcpro2, gcpro3;
Lisp_Object found, efound, hist_file_name;
/* True means we printed the ".el is newer" message. */
{
file = internal_condition_case_1 (Fsubstitute_in_file_name, file,
Qt, load_error_handler);
- if (NILP (file))
- return Qnil;
+ if (NILP (file)) {
+ dynwind_end ();
+ return Qnil;
+ }
}
else
file = Fsubstitute_in_file_name (file);
}
}
- fd = openp (Vload_path, file, suffixes, &found, Qnil);
+ fd = openp (Vload_path, file, suffixes, &found, Qnil, load_prefer_newer);
UNGCPRO;
}
{
if (NILP (noerror))
report_file_error ("Cannot open load file", file);
+ dynwind_end ();
return Qnil;
}
handler = Ffind_file_name_handler (found, Qt);
else
handler = Ffind_file_name_handler (found, Qload);
- if (! NILP (handler))
- return call5 (handler, Qload, found, noerror, nomessage, Qt);
+ if (! NILP (handler)) {
+ dynwind_end ();
+ return call5 (handler, Qload, found, noerror, nomessage, Qt);
+ }
#ifdef DOS_NT
/* Tramp has to deal with semi-broken packages that prepend
drive letters to remote files. For that reason, Tramp
#endif
}
- if (fd < 0)
+ if (fd >= 0)
{
- /* Pacify older GCC with --enable-gcc-warnings. */
- IF_LINT (fd_index = 0);
- }
- else
- {
- fd_index = SPECPDL_INDEX ();
- record_unwind_protect_int (close_file_unwind, fd);
+ record_unwind_protect_ptr (close_file_ptr_unwind, &fd);
+ record_unwind_protect_ptr (fclose_ptr_unwind, &stream);
}
/* Check if we're stuck in a recursive load cycle.
#ifdef DOS_NT
fmode = "rb";
#endif /* DOS_NT */
- result = stat (SSDATA (efound), &s1);
- if (result == 0)
- {
- SSET (efound, SBYTES (efound) - 1, 0);
- result = stat (SSDATA (efound), &s2);
- SSET (efound, SBYTES (efound) - 1, 'c');
- }
- if (result == 0
- && timespec_cmp (get_stat_mtime (&s1), get_stat_mtime (&s2)) < 0)
- {
- /* Make the progress messages mention that source is newer. */
- newer = 1;
+ /* openp already checked for newness, no point doing it again.
+ FIXME would be nice to get a message when openp
+ ignores suffix order due to load_prefer_newer. */
+ if (!load_prefer_newer)
+ {
+ result = stat (SSDATA (efound), &s1);
+ if (result == 0)
+ {
+ SSET (efound, SBYTES (efound) - 1, 0);
+ result = stat (SSDATA (efound), &s2);
+ SSET (efound, SBYTES (efound) - 1, 'c');
+ }
- /* If we won't print another message, mention this anyway. */
- if (!NILP (nomessage) && !force_load_messages)
- {
- Lisp_Object msg_file;
- msg_file = Fsubstring (found, make_number (0), make_number (-1));
- message_with_string ("Source file `%s' newer than byte-compiled file",
- msg_file, 1);
- }
- }
+ if (result == 0
+ && timespec_cmp (get_stat_mtime (&s1), get_stat_mtime (&s2)) < 0)
+ {
+ /* Make the progress messages mention that source is newer. */
+ newer = 1;
+
+ /* If we won't print another message, mention this anyway. */
+ if (!NILP (nomessage) && !force_load_messages)
+ {
+ Lisp_Object msg_file;
+ msg_file = Fsubstring (found, make_number (0), make_number (-1));
+ message_with_string ("Source file `%s' newer than byte-compiled file",
+ msg_file, 1);
+ }
+ }
+ } /* !load_prefer_newer */
UNGCPRO;
}
}
if (fd >= 0)
{
emacs_close (fd);
- clear_unwind_protect (fd_index);
+ fd = -1;
}
val = call4 (Vload_source_file_function, found, hist_file_name,
NILP (noerror) ? Qnil : Qt,
(NILP (nomessage) || force_load_messages) ? Qnil : Qt);
- return unbind_to (count, val);
+ dynwind_end ();
+ return val;
}
}
{
#ifdef WINDOWSNT
emacs_close (fd);
- clear_unwind_protect (fd_index);
+ fd = -1;
efound = ENCODE_FILE (found);
stream = emacs_fopen (SSDATA (efound), fmode);
#else
}
if (! stream)
report_file_error ("Opening stdio stream", file);
- set_unwind_protect_ptr (fd_index, fclose_unwind, stream);
if (! NILP (Vpurify_flag))
Vpreloaded_file_list = Fcons (Fpurecopy (file), Vpreloaded_file_list);
readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name,
0, Qnil, Qnil, Qnil, Qnil);
}
- unbind_to (count, Qnil);
+ dynwind_end ();
/* Run any eval-after-load forms for this file. */
if (!NILP (Ffboundp (Qdo_after_load_evaluation)))
(Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate)
{
Lisp_Object file;
- int fd = openp (path, filename, suffixes, &file, predicate);
+ int fd = openp (path, filename, suffixes, &file, predicate, false);
if (NILP (predicate) && fd >= 0)
emacs_close (fd);
return file;
nil is stored there on failure.
If the file we find is remote, return -2
- but store the found remote file name in *STOREPTR. */
+ but store the found remote file name in *STOREPTR.
+
+ If NEWER is true, try all SUFFIXes and return the result for the
+ newest file that exists. Does not apply to remote files,
+ or if PREDICATE is specified. */
int
openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes,
- Lisp_Object *storeptr, Lisp_Object predicate)
+ Lisp_Object *storeptr, Lisp_Object predicate, bool newer)
{
ptrdiff_t fn_size = 100;
char buf[100];
char *fn = buf;
- bool absolute = 0;
+ bool absolute;
ptrdiff_t want_length;
Lisp_Object filename;
- struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6;
- Lisp_Object string, tail, encoded_fn;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6, gcpro7;
+ Lisp_Object string, tail, encoded_fn, save_string;
ptrdiff_t max_suffix_len = 0;
int last_errno = ENOENT;
+ int save_fd = -1;
+
+ /* The last-modified time of the newest matching file found.
+ Initialize it to something less than all valid timestamps. */
+ struct timespec save_mtime = make_timespec (TYPE_MINIMUM (time_t), -1);
CHECK_STRING (str);
SBYTES (XCAR (tail)));
}
- string = filename = encoded_fn = Qnil;
- GCPRO6 (str, string, filename, path, suffixes, encoded_fn);
+ string = filename = encoded_fn = save_string = Qnil;
+ GCPRO7 (str, string, save_string, filename, path, suffixes, encoded_fn);
if (storeptr)
*storeptr = Qnil;
- if (complete_filename_p (str))
- absolute = 1;
+ absolute = complete_filename_p (str);
for (; CONSP (path); path = XCDR (path))
{
{
Lisp_Object tmp = call1 (predicate, string);
if (NILP (tmp))
- exists = 0;
+ exists = false;
else if (EQ (tmp, Qdir_ok)
|| NILP (Ffile_directory_p (string)))
- exists = 1;
+ exists = true;
else
{
- exists = 0;
+ exists = false;
last_errno = EISDIR;
}
}
if (exists)
{
- /* We succeeded; return this descriptor and filename. */
- if (storeptr)
- *storeptr = string;
- UNGCPRO;
- return -2;
+ /* We succeeded; return this descriptor and filename. */
+ if (storeptr)
+ *storeptr = string;
+ UNGCPRO;
+ return -2;
}
}
else
{
int fd;
const char *pfn;
+ struct stat st;
encoded_fn = ENCODE_FILE (string);
pfn = SSDATA (encoded_fn);
}
else
{
- struct stat st;
int err = (fstat (fd, &st) != 0 ? errno
: S_ISDIR (st.st_mode) ? EISDIR : 0);
if (err)
if (fd >= 0)
{
- /* We succeeded; return this descriptor and filename. */
- if (storeptr)
- *storeptr = string;
- UNGCPRO;
- return fd;
+ if (newer && !NATNUMP (predicate))
+ {
+ struct timespec mtime = get_stat_mtime (&st);
+
+ if (timespec_cmp (mtime, save_mtime) <= 0)
+ emacs_close (fd);
+ else
+ {
+ if (0 <= save_fd)
+ emacs_close (save_fd);
+ save_fd = fd;
+ save_mtime = mtime;
+ save_string = string;
+ }
+ }
+ else
+ {
+ /* We succeeded; return this descriptor and filename. */
+ if (storeptr)
+ *storeptr = string;
+ UNGCPRO;
+ return fd;
+ }
}
+
+ /* No more suffixes. Return the newest. */
+ if (0 <= save_fd && ! CONSP (XCDR (tail)))
+ {
+ if (storeptr)
+ *storeptr = save_string;
+ UNGCPRO;
+ return save_fd;
+ }
}
}
if (absolute)
xsignal0 (Qend_of_file);
}
+static Lisp_Object
+readevalloop_eager_expand_eval (Lisp_Object val, Lisp_Object macroexpand)
+{
+ /* If we macroexpand the toplevel form non-recursively and it ends
+ up being a `progn' (or if it was a progn to start), treat each
+ form in the progn as a top-level form. This way, if one form in
+ the progn defines a macro, that macro is in effect when we expand
+ the remaining forms. See similar code in bytecomp.el. */
+ val = call2 (macroexpand, val, Qnil);
+ if (EQ (CAR_SAFE (val), Qprogn))
+ {
+ Lisp_Object subforms = XCDR (val);
+ val = Qnil;
+ for (; CONSP (subforms); subforms = XCDR (subforms))
+ val = readevalloop_eager_expand_eval (XCAR (subforms),
+ macroexpand);
+ }
+ else
+ val = eval_sub (call2 (macroexpand, val, Qt));
+
+ return val;
+}
+
/* UNIBYTE specifies how to set load_convert_to_unibyte
for this invocation.
READFUN, if non-nil, is used instead of `read'.
{
register int c;
register Lisp_Object val;
- ptrdiff_t count = SPECPDL_INDEX ();
+ dynwind_begin ();
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
struct buffer *b = 0;
bool continue_reading_p;
continue_reading_p = 1;
while (continue_reading_p)
{
- ptrdiff_t count1 = SPECPDL_INDEX ();
+ dynwind_begin ();
if (b != 0 && !BUFFER_LIVE_P (b))
error ("Reading from killed buffer");
}
if (c < 0)
{
- unbind_to (count1, Qnil);
+ dynwind_end ();
break;
}
start = Fpoint_marker ();
/* Restore saved point and BEGV. */
- unbind_to (count1, Qnil);
+ dynwind_end ();
/* Now eval what we just read. */
if (!NILP (macroexpand))
- val = call1 (macroexpand, val);
- val = eval_sub (val);
+ val = readevalloop_eager_expand_eval (val, macroexpand);
+ else
+ val = eval_sub (val);
if (printflag)
{
UNGCPRO;
- unbind_to (count, Qnil);
+ dynwind_end ();
}
DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "",
This function preserves the position of point. */)
(Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print)
{
- ptrdiff_t count = SPECPDL_INDEX ();
+ dynwind_begin ();
Lisp_Object tem, buf;
if (NILP (buffer))
specbind (Qlexical_binding, lisp_file_lexically_bound_p (buf) ? Qt : Qnil);
readevalloop (buf, 0, filename,
!NILP (printflag), unibyte, Qnil, Qnil, Qnil);
- unbind_to (count, Qnil);
+ dynwind_end ();
return Qnil;
}
(Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function)
{
/* FIXME: Do the eval-sexp-add-defvars dance! */
- ptrdiff_t count = SPECPDL_INDEX ();
+ dynwind_begin ();
Lisp_Object tem, cbuf;
cbuf = Fcurrent_buffer ();
!NILP (printflag), Qnil, read_function,
start, end);
- return unbind_to (count, Qnil);
+ dynwind_end ();
+ return Qnil;
}
\f
if (EQ (stream, Qt))
stream = Qread_char;
if (EQ (stream, Qread_char))
- /* FIXME: ¿¡ When is this used !? */
+ /* FIXME: ?! When is this used !? */
return call1 (intern ("read-minibuffer"),
build_string ("Lisp expression: "));
XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE);
return tmp;
}
- invalid_syntax ("#^^");
+ invalid_syntax ("#^" "^");
}
invalid_syntax ("#^");
}
/* Accept compiled functions at read-time so that we don't have to
build them using function calls. */
Lisp_Object tmp;
+ struct Lisp_Vector *vec;
tmp = read_vector (readcharfun, 1);
- struct Lisp_Vector* vec = XVECTOR (tmp);
- if (vec->header.size==0)
+ vec = XVECTOR (tmp);
+ if (vec->header.size == 0)
invalid_syntax ("Empty byte-code object");
make_byte_code (vec);
return tmp;
if (saved_doc_string_size == 0)
{
- saved_doc_string = xmalloc (nskip + extra);
+ saved_doc_string = xmalloc_atomic (nskip + extra);
saved_doc_string_size = nskip + extra;
}
if (nskip > saved_doc_string_size)
/* Recurse according to subtree's type.
Every branch must return a Lisp_Object. */
- switch (XTYPE (subtree))
+ if (VECTORLIKEP (subtree))
{
- case Lisp_Vectorlike:
- {
- ptrdiff_t i, length = 0;
- if (BOOL_VECTOR_P (subtree))
- return subtree; /* No sub-objects anyway. */
- else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree)
- || COMPILEDP (subtree) || HASH_TABLE_P (subtree))
- length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK;
- else if (VECTORP (subtree))
- length = ASIZE (subtree);
- else
- /* An unknown pseudovector may contain non-Lisp fields, so we
- can't just blindly traverse all its fields. We used to call
- `Flength' which signaled `sequencep', so I just preserved this
- behavior. */
- wrong_type_argument (Qsequencep, subtree);
-
- for (i = 0; i < length; i++)
- SUBSTITUTE (AREF (subtree, i),
- ASET (subtree, i, true_value));
- return subtree;
- }
-
- case Lisp_Cons:
- {
- SUBSTITUTE (XCAR (subtree),
- XSETCAR (subtree, true_value));
- SUBSTITUTE (XCDR (subtree),
- XSETCDR (subtree, true_value));
- return subtree;
- }
-
- case Lisp_String:
- {
- /* Check for text properties in each interval.
- substitute_in_interval contains part of the logic. */
-
- INTERVAL root_interval = string_intervals (subtree);
- Lisp_Object arg = Fcons (object, placeholder);
+ ptrdiff_t i, length = 0;
+ if (BOOL_VECTOR_P (subtree))
+ return subtree; /* No sub-objects anyway. */
+ else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree)
+ || COMPILEDP (subtree) || HASH_TABLE_P (subtree))
+ length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK;
+ else if (VECTORP (subtree))
+ length = ASIZE (subtree);
+ else
+ /* An unknown pseudovector may contain non-Lisp fields, so we
+ can't just blindly traverse all its fields. We used to call
+ `Flength' which signaled `sequencep', so I just preserved this
+ behavior. */
+ wrong_type_argument (Qsequencep, subtree);
+
+ for (i = 0; i < length; i++)
+ SUBSTITUTE (AREF (subtree, i),
+ ASET (subtree, i, true_value));
+ return subtree;
+ }
+ else if (CONSP (subtree))
+ {
+ SUBSTITUTE (XCAR (subtree),
+ XSETCAR (subtree, true_value));
+ SUBSTITUTE (XCDR (subtree),
+ XSETCDR (subtree, true_value));
+ return subtree;
+ }
+ else if (STRINGP (subtree))
+ {
+ /* Check for text properties in each interval.
+ substitute_in_interval contains part of the logic. */
- traverse_intervals_noorder (root_interval,
- &substitute_in_interval, arg);
+ INTERVAL root_interval = string_intervals (subtree);
+ Lisp_Object arg = Fcons (object, placeholder);
- return subtree;
- }
+ traverse_intervals_noorder (root_interval,
+ &substitute_in_interval, arg);
- /* Other types don't recurse any further. */
- default:
return subtree;
}
+ else
+ /* Other types don't recurse any further. */
+ return subtree;
}
/* Helper function for substitute_object_recurse. */
ptrdiff_t i, size;
Lisp_Object *ptr;
Lisp_Object tem, item, vector;
- struct Lisp_Cons *otem;
Lisp_Object len;
tem = read_list (1, readcharfun);
if (!CONSP (item))
error ("Invalid byte code");
- otem = XCONS (item);
bytestr = XCAR (item);
item = XCDR (item);
- free_cons (otem);
}
/* Now handle the bytecode slot. */
}
}
ASET (vector, i, item);
- otem = XCONS (tem);
tem = Fcdr (tem);
- free_cons (otem);
}
return vector;
}
-/* FLAG means check for ] to terminate rather than ) and . */
+/* FLAG means check for ']' to terminate rather than ')' and '.'. */
static Lisp_Object
read_list (bool flag, Lisp_Object readcharfun)
\f
static Lisp_Object initial_obarray;
-/* `oblookup' stores the bucket number here, for the sake of Funintern. */
-
-static size_t oblookup_last_bucket_number;
+Lisp_Object
+obhash (Lisp_Object obarray)
+{
+ Lisp_Object tem = scm_hashq_get_handle (obarrays, obarray);
+ if (SCM_UNLIKELY (scm_is_false (tem)))
+ tem = scm_hashq_create_handle_x (obarrays, obarray,
+ scm_make_obarray ());
+ return scm_cdr (tem);
+}
/* Get an error if OBARRAY is not an obarray.
If it is one, return it. */
tem = oblookup (obarray, SSDATA (string),
SCHARS (string),
SBYTES (string));
- if (!INTEGERP (tem))
+ if (SYMBOLP (tem))
return tem;
if (!NILP (Vpurify_flag))
string = Fpurecopy (string);
- sym = Fmake_symbol (string);
- if (EQ (obarray, initial_obarray))
- XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY;
- else
- XSYMBOL (sym)->interned = SYMBOL_INTERNED;
+ sym = scm_intern (scm_from_utf8_stringn (SSDATA (string),
+ SBYTES (string)),
+ obhash (obarray));
+ initialize_symbol (sym, string);
if ((SREF (string, 0) == ':')
&& EQ (obarray, initial_obarray))
SET_SYMBOL_VAL (XSYMBOL (sym), sym);
}
- ptr = aref_addr (obarray, XINT(tem));
- if (SYMBOLP (*ptr))
- set_symbol_next (sym, XSYMBOL (*ptr));
- else
- set_symbol_next (sym, NULL);
- *ptr = sym;
- return sym;
+ return scm_intern (scm_from_utf8_stringn (SSDATA (string),
+ SBYTES (string)),
+ obhash (obarray));
}
DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0,
else
return tem;
}
+
+DEFUN ("find-symbol", Ffind_symbol, Sfind_symbol, 1, 2, 0,
+ doc: /* find-symbol */)
+ (Lisp_Object string, Lisp_Object obarray)
+{
+ Lisp_Object tem;
+
+ obarray = check_obarray (NILP (obarray) ? Vobarray : obarray);
+ CHECK_STRING (string);
+
+ tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string));
+ if (INTEGERP (tem))
+ return scm_values (scm_list_2 (Qnil, Qnil));
+ else
+ return scm_values (scm_list_2 (tem, Qt));
+}
\f
DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0,
doc: /* Delete the symbol named NAME, if any, from OBARRAY.
The value is t if a symbol was found and deleted, nil otherwise.
NAME may be a string or a symbol. If it is a symbol, that symbol
is deleted, if it belongs to OBARRAY--no other symbol is deleted.
-OBARRAY defaults to the value of the variable `obarray'. */)
+OBARRAY, if nil, defaults to the value of the variable `obarray'.
+usage: (unintern NAME OBARRAY) */)
(Lisp_Object name, Lisp_Object obarray)
{
- register Lisp_Object string, tem;
- size_t hash;
+ Lisp_Object string;
+ Lisp_Object tem;
- if (NILP (obarray)) obarray = Vobarray;
+ if (NILP (obarray))
+ obarray = Vobarray;
obarray = check_obarray (obarray);
if (SYMBOLP (name))
- string = SYMBOL_NAME (name);
- else
- {
- CHECK_STRING (name);
- string = name;
- }
-
- tem = oblookup (obarray, SSDATA (string),
- SCHARS (string),
- SBYTES (string));
- if (INTEGERP (tem))
- return Qnil;
- /* If arg was a symbol, don't delete anything but that symbol itself. */
- if (SYMBOLP (name) && !EQ (name, tem))
- return Qnil;
-
- /* There are plenty of other symbols which will screw up the Emacs
- session if we unintern them, as well as even more ways to use
- `setq' or `fset' or whatnot to make the Emacs session
- unusable. Let's not go down this silly road. --Stef */
- /* if (EQ (tem, Qnil) || EQ (tem, Qt))
- error ("Attempt to unintern t or nil"); */
-
- XSYMBOL (tem)->interned = SYMBOL_UNINTERNED;
-
- hash = oblookup_last_bucket_number;
-
- if (EQ (AREF (obarray, hash), tem))
{
- if (XSYMBOL (tem)->next)
- {
- Lisp_Object sym;
- XSETSYMBOL (sym, XSYMBOL (tem)->next);
- ASET (obarray, hash, sym);
- }
- else
- ASET (obarray, hash, make_number (0));
+ if (! EQ (name,
+ scm_find_symbol (scm_symbol_to_string (name),
+ obhash (obarray))))
+ return Qnil;
+ string = SYMBOL_NAME (name);
}
else
{
- Lisp_Object tail, following;
-
- for (tail = AREF (obarray, hash);
- XSYMBOL (tail)->next;
- tail = following)
- {
- XSETSYMBOL (following, XSYMBOL (tail)->next);
- if (EQ (following, tem))
- {
- set_symbol_next (tail, XSYMBOL (following)->next);
- break;
- }
- }
+ CHECK_STRING (name);
+ string = name;
+
}
- return Qt;
+ return (scm_is_true (scm_unintern (name, obhash (obarray))) ? Qt : Qnil);
}
\f
/* Return the symbol in OBARRAY whose names matches the string
of SIZE characters (SIZE_BYTE bytes) at PTR.
- If there is no such symbol in OBARRAY, return nil.
+ If there is no such symbol, return the integer bucket number of
+ where the symbol would be if it were present.
Also store the bucket number in oblookup_last_bucket_number. */
Lisp_Object
oblookup (Lisp_Object obarray, register const char *ptr, ptrdiff_t size, ptrdiff_t size_byte)
{
- size_t hash;
- size_t obsize;
- register Lisp_Object tail;
- Lisp_Object bucket, tem;
+ Lisp_Object sym;
+ Lisp_Object string2 = scm_from_utf8_stringn (ptr, size_byte);
obarray = check_obarray (obarray);
- obsize = ASIZE (obarray);
-
- /* This is sometimes needed in the middle of GC. */
- obsize &= ~ARRAY_MARK_FLAG;
- hash = hash_string (ptr, size_byte) % obsize;
- bucket = AREF (obarray, hash);
- oblookup_last_bucket_number = hash;
- if (EQ (bucket, make_number (0)))
- ;
- else if (!SYMBOLP (bucket))
- error ("Bad data in guts of obarray"); /* Like CADR error message. */
+ sym = scm_find_symbol (string2, obhash (obarray));
+ if (scm_is_true (sym)
+ && scm_is_true (scm_module_variable (symbol_module, sym)))
+ {
+ if (EQ (sym, Qnil_))
+ return Qnil;
+ else if (EQ (sym, Qt_))
+ return Qt;
+ else
+ return sym;
+ }
else
- for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next))
- {
- if (SBYTES (SYMBOL_NAME (tail)) == size_byte
- && SCHARS (SYMBOL_NAME (tail)) == size
- && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte))
- return tail;
- else if (XSYMBOL (tail)->next == 0)
- break;
- }
- XSETINT (tem, hash);
- return tem;
+ return make_number (0);
}
\f
void
map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg)
{
- ptrdiff_t i;
- register Lisp_Object tail;
+ Lisp_Object proc (Lisp_Object sym)
+ {
+ Lisp_Object tem = Ffind_symbol (SYMBOL_NAME (sym), obarray);
+ if (scm_is_true (scm_c_value_ref (tem, 1))
+ && EQ (sym, scm_c_value_ref (tem, 0)))
+ fn (sym, arg);
+ return SCM_UNSPECIFIED;
+ }
CHECK_VECTOR (obarray);
- for (i = ASIZE (obarray) - 1; i >= 0; i--)
- {
- tail = AREF (obarray, i);
- if (SYMBOLP (tail))
- while (1)
- {
- (*fn) (tail, arg);
- if (XSYMBOL (tail)->next == 0)
- break;
- XSETSYMBOL (tail, XSYMBOL (tail)->next);
- }
- }
+ scm_obarray_for_each (scm_c_make_gsubr ("proc", 1, 0, 0, proc),
+ obhash (obarray));
}
static void
initial_obarray = Vobarray;
staticpro (&initial_obarray);
- Qunbound = Fmake_symbol (build_pure_c_string ("unbound"));
- /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the
- NILP (Vpurify_flag) check in intern_c_string. */
- Qnil = make_number (-1); Vpurify_flag = make_number (1);
- Qnil = intern_c_string ("nil");
+ obarrays = scm_make_hash_table (SCM_UNDEFINED);
+ scm_hashq_set_x (obarrays, Vobarray, SCM_UNDEFINED);
+
+ Qnil = SCM_ELISP_NIL;
+ Qt = SCM_BOOL_T;
+
+ Qnil_ = intern_c_string ("nil");
+ SET_SYMBOL_VAL (XSYMBOL (Qnil_), Qnil);
+ XSYMBOL (Qnil_)->constant = 1;
+ XSYMBOL (Qnil_)->declared_special = 1;
- /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil,
- so those two need to be fixed manually. */
+ Qt_ = intern_c_string ("t");
+ SET_SYMBOL_VAL (XSYMBOL (Qt_), Qt);
+ XSYMBOL (Qt_)->constant = 1;
+ XSYMBOL (Qt_)->declared_special = 1;
+
+ Qunbound = Fmake_symbol (build_pure_c_string ("unbound"));
SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound);
- set_symbol_function (Qunbound, Qnil);
- set_symbol_plist (Qunbound, Qnil);
- SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil);
- XSYMBOL (Qnil)->constant = 1;
- XSYMBOL (Qnil)->declared_special = 1;
- set_symbol_plist (Qnil, Qnil);
- set_symbol_function (Qnil, Qnil);
-
- Qt = intern_c_string ("t");
- SET_SYMBOL_VAL (XSYMBOL (Qt), Qt);
- XSYMBOL (Qnil)->declared_special = 1;
- XSYMBOL (Qt)->constant = 1;
/* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
Vpurify_flag = Qt;
DEFSYM (Qvariable_documentation, "variable-documentation");
- read_buffer = xmalloc (size);
+ read_buffer = xmalloc_atomic (size);
read_buffer_size = size;
}
\f
{
Lisp_Object sym, tem;
sym = intern_c_string (sname->symbol_name);
+ SCM_NEWSMOB (sname->header.self, lisp_vectorlike_tag, sname);
XSETPVECTYPE (sname, PVEC_SUBR);
XSETSUBR (tem, sname);
set_symbol_function (sym, tem);
}
-#ifdef NOTDEF /* Use fset in subr.el now! */
-void
-defalias (struct Lisp_Subr *sname, char *string)
-{
- Lisp_Object sym;
- sym = intern (string);
- XSETSUBR (XSYMBOL (sym)->function, sname);
-}
-#endif /* NOTDEF */
-
/* Define an "integer variable"; a symbol whose value is forwarded to a
C variable of type EMACS_INT. Sample call (with "xx" to fool make-docfile):
DEFxxVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */
}
}
-/* Record the value of load-path used at the start of dumping
- so we can see if the site changed it later during dumping. */
-static Lisp_Object dump_path;
-
/* Return the default load-path, to be used if EMACSLOADPATH is unset.
This does not include the standard site-lisp directories
under the installation prefix (i.e., PATH_SITELOADSEARCH),
If purify-flag (ie dumping) just use PATH_DUMPLOADSEARCH.
Otherwise use PATH_LOADSEARCH.
- If !initialized, then just set dump_path and return PATH_DUMPLOADSEARCH.
- If initialized, then if Vload_path != dump_path, return just Vload_path.
- (Presumably the load-path has already been changed by something.
- This can only be from a site-load file during dumping.)
+ If !initialized, then just return PATH_DUMPLOADSEARCH.
+ If initialized:
If Vinstallation_directory is not nil (ie, running uninstalled):
If installation-dir/lisp exists and not already a member,
we must be running uninstalled. Reset the load-path
to just installation-dir/lisp. (The default PATH_LOADSEARCH
refers to the eventual installation directories. Since we
are not yet installed, we should not use them, even if they exist.)
- If installation-dir/lisp does not exist, just add dump_path at the
- end instead.
- Add installation-dir/leim (if exists and not already a member) at the front.
+ If installation-dir/lisp does not exist, just add
+ PATH_DUMPLOADSEARCH at the end instead.
Add installation-dir/site-lisp (if !no_site_lisp, and exists
and not already a member) at the front.
If installation-dir != source-dir (ie running an uninstalled,
out-of-tree build) AND install-dir/src/Makefile exists BUT
install-dir/src/Makefile.in does NOT exist (this is a sanity
- check), then repeat the above steps for source-dir/lisp,
- leim and site-lisp.
-*/
-Lisp_Object
-load_path_default (bool ignore_existing)
+ check), then repeat the above steps for source-dir/lisp, site-lisp. */
+
+static Lisp_Object
+load_path_default (void)
{
Lisp_Object lpath = Qnil;
const char *normal;
normal = NILP (Vpurify_flag) ? PATH_LOADSEARCH : PATH_DUMPLOADSEARCH;
- /* In a dumped Emacs, we normally reset the value of Vload_path using
- PATH_LOADSEARCH, since the value that was dumped uses lisp/ in
- the source directory, instead of the path of the installed elisp
- libraries. However, if it appears that Vload_path has already been
- changed from the default that was saved before dumping, don't
- change it further. Changes can only be due to EMACSLOADPATH, or
- site-lisp files that were processed during dumping. */
if (initialized)
{
- if (!ignore_existing && NILP (Fequal (dump_path, Vload_path)))
- {
- /* Do not make any changes. */
- return Vload_path;
- }
- else
- {
#ifdef HAVE_NS
- const char *loadpath = ns_load_path ();
- lpath = decode_env_path (0, loadpath ? loadpath : normal, 0);
+ const char *loadpath = ns_load_path ();
+ lpath = decode_env_path (0, loadpath ? loadpath : normal, 0);
#else
- lpath = decode_env_path (0, normal, 0);
+ lpath = decode_env_path (0, normal, 0);
#endif
- if (!NILP (Vinstallation_directory))
+ if (!NILP (Vinstallation_directory))
+ {
+ Lisp_Object tem, tem1;
+
+ /* Add to the path the lisp subdir of the installation
+ dir, if it is accessible. Note: in out-of-tree builds,
+ this directory is empty save for Makefile. */
+ tem = Fexpand_file_name (build_string ("lisp"),
+ Vinstallation_directory);
+ tem1 = Ffile_accessible_directory_p (tem);
+ if (!NILP (tem1))
{
- Lisp_Object tem, tem1;
-
- /* Add to the path the lisp subdir of the installation
- dir, if it is accessible. Note: in out-of-tree builds,
- this directory is empty save for Makefile. */
- tem = Fexpand_file_name (build_string ("lisp"),
- Vinstallation_directory);
- tem1 = Ffile_accessible_directory_p (tem);
- if (!NILP (tem1))
+ if (NILP (Fmember (tem, lpath)))
{
- if (NILP (Fmember (tem, lpath)))
- {
- /* We are running uninstalled. The default load-path
- points to the eventual installed lisp, leim
- directories. We should not use those now, even
- if they exist, so start over from a clean slate. */
- lpath = list1 (tem);
- }
+ /* We are running uninstalled. The default load-path
+ points to the eventual installed lisp directories.
+ We should not use those now, even if they exist,
+ so start over from a clean slate. */
+ lpath = list1 (tem);
}
- else
- /* That dir doesn't exist, so add the build-time
- Lisp dirs instead. */
- lpath = nconc2 (lpath, dump_path);
+ }
+ else
+ /* That dir doesn't exist, so add the build-time
+ Lisp dirs instead. */
+ {
+ Lisp_Object dump_path =
+ decode_env_path (0, PATH_DUMPLOADSEARCH, 0);
+ lpath = nconc2 (lpath, dump_path);
+ }
- /* Add leim under the installation dir, if it is accessible. */
- tem = Fexpand_file_name (build_string ("leim"),
+ /* Add site-lisp under the installation dir, if it exists. */
+ if (!no_site_lisp)
+ {
+ tem = Fexpand_file_name (build_string ("site-lisp"),
Vinstallation_directory);
tem1 = Ffile_accessible_directory_p (tem);
if (!NILP (tem1))
if (NILP (Fmember (tem, lpath)))
lpath = Fcons (tem, lpath);
}
+ }
- /* Add site-lisp under the installation dir, if it exists. */
- if (!no_site_lisp)
- {
- tem = Fexpand_file_name (build_string ("site-lisp"),
- Vinstallation_directory);
- tem1 = Ffile_accessible_directory_p (tem);
- if (!NILP (tem1))
- {
- if (NILP (Fmember (tem, lpath)))
- lpath = Fcons (tem, lpath);
- }
- }
+ /* If Emacs was not built in the source directory,
+ and it is run from where it was built, add to load-path
+ the lisp and site-lisp dirs under that directory. */
+
+ if (NILP (Fequal (Vinstallation_directory, Vsource_directory)))
+ {
+ Lisp_Object tem2;
- /* If Emacs was not built in the source directory,
- and it is run from where it was built, add to load-path
- the lisp, leim and site-lisp dirs under that directory. */
+ tem = Fexpand_file_name (build_string ("src/Makefile"),
+ Vinstallation_directory);
+ tem1 = Ffile_exists_p (tem);
- if (NILP (Fequal (Vinstallation_directory, Vsource_directory)))
+ /* Don't be fooled if they moved the entire source tree
+ AFTER dumping Emacs. If the build directory is indeed
+ different from the source dir, src/Makefile.in and
+ src/Makefile will not be found together. */
+ tem = Fexpand_file_name (build_string ("src/Makefile.in"),
+ Vinstallation_directory);
+ tem2 = Ffile_exists_p (tem);
+ if (!NILP (tem1) && NILP (tem2))
{
- Lisp_Object tem2;
-
- tem = Fexpand_file_name (build_string ("src/Makefile"),
- Vinstallation_directory);
- tem1 = Ffile_exists_p (tem);
-
- /* Don't be fooled if they moved the entire source tree
- AFTER dumping Emacs. If the build directory is indeed
- different from the source dir, src/Makefile.in and
- src/Makefile will not be found together. */
- tem = Fexpand_file_name (build_string ("src/Makefile.in"),
- Vinstallation_directory);
- tem2 = Ffile_exists_p (tem);
- if (!NILP (tem1) && NILP (tem2))
- {
- tem = Fexpand_file_name (build_string ("lisp"),
- Vsource_directory);
+ tem = Fexpand_file_name (build_string ("lisp"),
+ Vsource_directory);
- if (NILP (Fmember (tem, lpath)))
- lpath = Fcons (tem, lpath);
+ if (NILP (Fmember (tem, lpath)))
+ lpath = Fcons (tem, lpath);
- tem = Fexpand_file_name (build_string ("leim"),
+ if (!no_site_lisp)
+ {
+ tem = Fexpand_file_name (build_string ("site-lisp"),
Vsource_directory);
-
- if (NILP (Fmember (tem, lpath)))
- lpath = Fcons (tem, lpath);
-
- if (!no_site_lisp)
+ tem1 = Ffile_accessible_directory_p (tem);
+ if (!NILP (tem1))
{
- tem = Fexpand_file_name (build_string ("site-lisp"),
- Vsource_directory);
- tem1 = Ffile_accessible_directory_p (tem);
- if (!NILP (tem1))
- {
- if (NILP (Fmember (tem, lpath)))
- lpath = Fcons (tem, lpath);
- }
+ if (NILP (Fmember (tem, lpath)))
+ lpath = Fcons (tem, lpath);
}
}
- } /* Vinstallation_directory != Vsource_directory */
-
- } /* if Vinstallation_directory */
+ }
+ } /* Vinstallation_directory != Vsource_directory */
- } /* if dump_path == Vload_path */
+ } /* if Vinstallation_directory */
}
else /* !initialized */
{
/* NORMAL refers to PATH_DUMPLOADSEARCH, ie the lisp dir in the
source directory. We used to add ../lisp (ie the lisp dir in
- the build directory) at the front here, but that caused trouble
- because it was copied from dump_path into Vload_path, above,
- when Vinstallation_directory was non-nil. It should not be
- necessary, since in out of tree builds lisp/ is empty, save
+ the build directory) at the front here, but that should not
+ be necessary, since in out of tree builds lisp/ is empty, save
for Makefile. */
lpath = decode_env_path (0, normal, 0);
- dump_path = lpath;
}
#endif /* !CANNOT_DUMP */
{
/* First, set Vload_path. */
- /* We explicitly ignore EMACSLOADPATH when dumping. */
- if (NILP (Vpurify_flag) && egetenv ("EMACSLOADPATH"))
+ /* Ignore EMACSLOADPATH when dumping. */
+#ifdef CANNOT_DUMP
+ bool use_loadpath = true;
+#else
+ bool use_loadpath = NILP (Vpurify_flag);
+#endif
+
+ if (use_loadpath && egetenv ("EMACSLOADPATH"))
{
Vload_path = decode_env_path ("EMACSLOADPATH", 0, 1);
/* Check (non-nil) user-supplied elements. */
load_path_check (Vload_path);
- /* Replace any nil elements from the environment with the default. */
- if (Fmemq (Qnil, Vload_path))
+ /* If no nils in the environment variable, use as-is.
+ Otherwise, replace any nils with the default. */
+ if (! NILP (Fmemq (Qnil, Vload_path)))
{
- Lisp_Object lpath = Vload_path;
- Lisp_Object elem, default_lpath = load_path_default (1);
+ Lisp_Object elem, elpath = Vload_path;
+ Lisp_Object default_lpath = load_path_default ();
/* Check defaults, before adding site-lisp. */
load_path_check (default_lpath);
Vload_path = Qnil;
/* Replace nils from EMACSLOADPATH by default. */
- while (CONSP (lpath))
+ while (CONSP (elpath))
{
Lisp_Object arg[2];
- elem = XCAR (lpath);
- lpath = XCDR (lpath);
+ elem = XCAR (elpath);
+ elpath = XCDR (elpath);
arg[0] = Vload_path;
arg[1] = NILP (elem) ? default_lpath : Fcons (elem, Qnil);
Vload_path = Fappend (2, arg);
}
} /* Fmemq (Qnil, Vload_path) */
}
- else /* Vpurify_flag || !EMACSLOADPATH */
+ else
{
- Vload_path = load_path_default (0);
+ Vload_path = load_path_default ();
/* Check before adding site-lisp directories.
The install should have created them, but they are not
Or we might be running before installation. */
load_path_check (Vload_path);
- /* Add the site-lisp directories at the front, unless the
- load-path has somehow already been changed (this can only be
- from a site-load file during dumping?) from the dumped value.
- FIXME? Should we ignore any dump_path changes? */
- if (initialized && !no_site_lisp &&
- ! NILP (Fequal (dump_path, Vload_path)))
+ /* Add the site-lisp directories at the front. */
+ if (initialized && !no_site_lisp)
{
Lisp_Object sitelisp;
sitelisp = decode_env_path (0, PATH_SITELOADSEARCH, 0);
if (! NILP (sitelisp)) Vload_path = nconc2 (sitelisp, Vload_path);
}
- } /* !Vpurify_flag && EMACSLOADPATH */
+ }
Vvalues = Qnil;
void
syms_of_lread (void)
{
- defsubr (&Sread);
- defsubr (&Sread_from_string);
- defsubr (&Sintern);
- defsubr (&Sintern_soft);
- defsubr (&Sunintern);
- defsubr (&Sget_load_suffixes);
- defsubr (&Sload);
- defsubr (&Seval_buffer);
- defsubr (&Seval_region);
- defsubr (&Sread_char);
- defsubr (&Sread_char_exclusive);
- defsubr (&Sread_event);
- defsubr (&Sget_file_char);
- defsubr (&Smapatoms);
- defsubr (&Slocate_file_internal);
+#include "lread.x"
DEFVAR_LISP ("obarray", Vobarray,
doc: /* Symbol table for use by `intern' and `read'.
Vold_style_backquotes = Qnil;
DEFSYM (Qold_style_backquotes, "old-style-backquotes");
+ DEFVAR_BOOL ("load-prefer-newer", load_prefer_newer,
+ doc: /* Non-nil means `load' prefers the newest version of a file.
+This applies when a filename suffix is not explicitly specified and
+`load' is trying various possible suffixes (see `load-suffixes' and
+`load-file-rep-suffixes'). Normally, it stops at the first file
+that exists unless you explicitly specify one or the other. If this
+option is non-nil, it checks all suffixes and uses whichever file is
+newest.
+Note that if you customize this, obviously it will not affect files
+that are loaded before your customizations are read! */);
+ load_prefer_newer = 1;
+
/* Vsource_directory was initialized in init_lread. */
DEFSYM (Qcurrent_load_list, "current-load-list");
DEFSYM (Qdir_ok, "dir-ok");
DEFSYM (Qdo_after_load_evaluation, "do-after-load-evaluation");
- staticpro (&dump_path);
-
staticpro (&read_objects);
read_objects = Qnil;
staticpro (&seen_list);
HCoop / bpt / emacs.git / blobdiff