/* Lisp parsing and input streams.
-Copyright (C) 1985-1989, 1993-1995, 1997-2014 Free Software Foundation,
+Copyright (C) 1985-1989, 1993-1995, 1997-2015 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
+/* Tell globals.h to define tables needed by init_obarray. */
+#define DEFINE_SYMBOLS
#include <config.h>
#include "sysstdio.h"
#include <sys/file.h>
#include <errno.h>
#include <limits.h> /* For CHAR_BIT. */
+#include <math.h>
#include <stat-time.h>
#include "lisp.h"
#include "intervals.h"
#define file_tell ftell
#endif
-/* Hash table read constants. */
-static Lisp_Object Qhash_table, Qdata;
-static Lisp_Object Qtest;
-Lisp_Object Qsize;
-static Lisp_Object Qweakness;
-static Lisp_Object Qrehash_size;
-static Lisp_Object Qrehash_threshold;
-
-static Lisp_Object Qread_char, Qget_file_char, Qcurrent_load_list;
-Lisp_Object Qstandard_input;
-Lisp_Object Qvariable_documentation;
-static Lisp_Object Qascii_character, Qload, Qload_file_name;
-Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction;
-static Lisp_Object Qinhibit_file_name_operation;
-static Lisp_Object Qeval_buffer_list;
-Lisp_Object Qlexical_binding;
-static Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */
-
-/* Used instead of Qget_file_char while loading *.elc files compiled
- by Emacs 21 or older. */
-static Lisp_Object Qget_emacs_mule_file_char;
-
-static Lisp_Object Qload_force_doc_strings;
-
-static Lisp_Object Qload_in_progress;
-
/* The association list of objects read with the #n=object form.
Each member of the list has the form (n . object), and is used to
look up the object for the corresponding #n# construct.
Fread initializes this to false, so we need not specbind it
or worry about what happens to it when there is an error. */
static bool new_backquote_flag;
-static Lisp_Object Qold_style_backquotes;
/* A list of file names for files being loaded in Fload. Used to
check for recursive loads. */
if (!NILP (Vold_style_backquotes))
{
AUTO_STRING (format, "Loading `%s': old-style backquotes detected!");
- Fmessage (2, (Lisp_Object []) {format, file});
+ CALLN (Fmessage, format, file);
}
}
bool compiled = 0;
Lisp_Object handler;
bool safe_p = 1;
- const char *fmode = "r";
+ const char *fmode = "r" FOPEN_TEXT;
int version;
-#ifdef DOS_NT
- fmode = "rt";
-#endif /* DOS_NT */
-
CHECK_STRING (file);
/* If file name is magic, call the handler. */
{
suffixes = Fget_load_suffixes ();
if (NILP (must_suffix))
- {
- Lisp_Object arg[2];
- arg[0] = suffixes;
- arg[1] = Vload_file_rep_suffixes;
- suffixes = Fappend (2, arg);
- }
+ suffixes = CALLN (Fappend, suffixes, Vload_file_rep_suffixes);
}
fd = openp (Vload_path, file, suffixes, &found, Qnil, load_prefer_newer);
compiled = 1;
efound = ENCODE_FILE (found);
-
-#ifdef DOS_NT
- fmode = "rb";
-#endif /* DOS_NT */
+ fmode = "r" FOPEN_BINARY;
/* openp already checked for newness, no point doing it again.
FIXME would be nice to get a message when openp
return file;
}
-static Lisp_Object Qdir_ok;
-
/* Search for a file whose name is STR, looking in directories
in the Lisp list PATH, and trying suffixes from SUFFIX.
On success, return a file descriptor (or 1 or -2 as described below).
bool float_syntax = 0;
double value = 0;
- /* Compute NaN and infinities using a variable, to cope with compilers that
- think they are smarter than we are. */
- double zero = 0;
-
/* Negate the value ourselves. This treats 0, NaNs, and infinity properly on
IEEE floating point hosts, and works around a formerly-common bug where
atof ("-0.0") drops the sign. */
{
state |= E_EXP;
cp += 3;
- value = 1.0 / zero;
+ value = INFINITY;
}
else if (cp[-1] == '+'
&& cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N')
{
state |= E_EXP;
cp += 3;
- value = zero / zero;
-
- /* If that made a "negative" NaN, negate it. */
- {
- int i;
- union { double d; char c[sizeof (double)]; }
- u_data, u_minus_zero;
- u_data.d = value;
- u_minus_zero.d = -0.0;
- for (i = 0; i < sizeof (double); i++)
- if (u_data.c[i] & u_minus_zero.c[i])
- {
- value = -value;
- break;
- }
- }
- /* Now VALUE is a positive NaN. */
+ /* NAN is a "positive" NaN on all known Emacs hosts. */
+ value = NAN;
}
else
cp = ecp;
return obarray;
}
-/* Intern a symbol with name STRING in OBARRAY using bucket INDEX. */
+/* Intern symbol SYM in OBARRAY using bucket INDEX. */
-Lisp_Object
-intern_driver (Lisp_Object string, Lisp_Object obarray, ptrdiff_t index)
+static Lisp_Object
+intern_sym (Lisp_Object sym, Lisp_Object obarray, Lisp_Object index)
{
- Lisp_Object *ptr, sym = Fmake_symbol (string);
+ Lisp_Object *ptr;
XSYMBOL (sym)->interned = (EQ (obarray, initial_obarray)
? SYMBOL_INTERNED_IN_INITIAL_OBARRAY
: SYMBOL_INTERNED);
- if ((SREF (string, 0) == ':') && EQ (obarray, initial_obarray))
+ if (SREF (SYMBOL_NAME (sym), 0) == ':' && EQ (obarray, initial_obarray))
{
XSYMBOL (sym)->constant = 1;
XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL;
SET_SYMBOL_VAL (XSYMBOL (sym), sym);
}
- ptr = aref_addr (obarray, index);
+ ptr = aref_addr (obarray, XINT (index));
set_symbol_next (sym, SYMBOLP (*ptr) ? XSYMBOL (*ptr) : NULL);
*ptr = sym;
return sym;
}
+/* Intern a symbol with name STRING in OBARRAY using bucket INDEX. */
+
+Lisp_Object
+intern_driver (Lisp_Object string, Lisp_Object obarray, Lisp_Object index)
+{
+ return intern_sym (Fmake_symbol (string), obarray, index);
+}
+
/* Intern the C string STR: return a symbol with that name,
interned in the current obarray. */
Lisp_Object tem = oblookup (obarray, str, len, len);
return SYMBOLP (tem) ? tem : intern_driver (make_string (str, len),
- obarray, XINT (tem));
+ obarray, tem);
}
Lisp_Object
/* Creating a non-pure string from a string literal not implemented yet.
We could just use make_string here and live with the extra copy. */
eassert (!NILP (Vpurify_flag));
- tem = intern_driver (make_pure_c_string (str, len), obarray, XINT (tem));
+ tem = intern_driver (make_pure_c_string (str, len), obarray, tem);
}
return tem;
}
+
+static void
+define_symbol (Lisp_Object sym, char const *str)
+{
+ ptrdiff_t len = strlen (str);
+ Lisp_Object string = make_pure_c_string (str, len);
+ init_symbol (sym, string);
+
+ /* Qunbound is uninterned, so that it's not confused with any symbol
+ 'unbound' created by a Lisp program. */
+ if (! EQ (sym, Qunbound))
+ {
+ Lisp_Object bucket = oblookup (initial_obarray, str, len, len);
+ eassert (INTEGERP (bucket));
+ intern_sym (sym, initial_obarray, bucket);
+ }
+}
\f
DEFUN ("intern", Fintern, Sintern, 1, 2, 0,
doc: /* Return the canonical symbol whose name is STRING.
tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string));
if (!SYMBOLP (tem))
- tem = intern_driver (NILP (Vpurify_flag) ? string
- : Fpurecopy (string), obarray, XINT (tem));
+ tem = intern_driver (NILP (Vpurify_flag) ? string : Fpurecopy (string),
+ obarray, tem);
return tem;
}
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");
-
- /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil,
- so those two need to be fixed manually. */
- SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound);
- set_symbol_function (Qunbound, Qnil);
- set_symbol_plist (Qunbound, Qnil);
+ for (int i = 0; i < ARRAYELTS (lispsym); i++)
+ define_symbol (builtin_lisp_symbol (i), defsym_name[i]);
+
+ DEFSYM (Qunbound, "unbound");
+
+ DEFSYM (Qnil, "nil");
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);
+ XSYMBOL (Qnil)->declared_special = true;
- Qt = intern_c_string ("t");
+ DEFSYM (Qt, "t");
SET_SYMBOL_VAL (XSYMBOL (Qt), Qt);
- XSYMBOL (Qnil)->declared_special = 1;
XSYMBOL (Qt)->constant = 1;
+ XSYMBOL (Qt)->declared_special = true;
/* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
Vpurify_flag = Qt;
/* Replace nils from EMACSLOADPATH by default. */
while (CONSP (elpath))
{
- Lisp_Object arg[2];
elem = XCAR (elpath);
elpath = XCDR (elpath);
- arg[0] = Vload_path;
- arg[1] = NILP (elem) ? default_lpath : Fcons (elem, Qnil);
- Vload_path = Fappend (2, arg);
+ Vload_path = CALLN (Fappend, Vload_path,
+ NILP (elem) ? default_lpath : list1 (elem));
}
} /* Fmemq (Qnil, Vload_path) */
}
DEFSYM (Qstandard_input, "standard-input");
DEFSYM (Qread_char, "read-char");
DEFSYM (Qget_file_char, "get-file-char");
+
+ /* Used instead of Qget_file_char while loading *.elc files compiled
+ by Emacs 21 or older. */
DEFSYM (Qget_emacs_mule_file_char, "get-emacs-mule-file-char");
+
DEFSYM (Qload_force_doc_strings, "load-force-doc-strings");
DEFSYM (Qbackquote, "`");