/* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter.
- Copyright (C) 1985,86,88,93,94,95,97,98,99, 2000, 2001, 03, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1988, 1993, 1994, 1995, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2006 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; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include <config.h>
#include <stdio.h>
#include "lisp.h"
#include "puresize.h"
-#include "charset.h"
+#include "character.h"
#include "buffer.h"
#include "keyboard.h"
#include "frame.h"
}
DEFUN ("listp", Flistp, Slistp, 1, 1, 0,
- doc: /* Return t if OBJECT is a list. This includes nil. */)
+ doc: /* Return t if OBJECT is a list, that is, a cons cell or nil.
+Otherwise, return nil. */)
(object)
Lisp_Object object;
{
(object)
register Lisp_Object object;
{
- if (INTEGERP (object) || STRINGP (object))
+ if (CHARACTERP (object) || STRINGP (object))
return Qt;
return Qnil;
}
DEFUN ("car", Fcar, Scar, 1, 1, 0,
doc: /* Return the car of LIST. If arg is nil, return nil.
-Error if arg is not nil and not a cons cell. See also `car-safe'. */)
+Error if arg is not nil and not a cons cell. See also `car-safe'.
+
+See Info node `(elisp)Cons Cells' for a discussion of related basic
+Lisp concepts such as car, cdr, cons cell and list. */)
(list)
register Lisp_Object list;
{
DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0,
doc: /* Return the cdr of LIST. If arg is nil, return nil.
-Error if arg is not nil and not a cons cell. See also `cdr-safe'. */)
+Error if arg is not nil and not a cons cell. See also `cdr-safe'.
+
+See Info node `(elisp)Cons Cells' for a discussion of related basic
+Lisp concepts such as cdr, car, cons cell and list. */)
(list)
register Lisp_Object list;
{
(symbol, definition, docstring)
register Lisp_Object symbol, definition, docstring;
{
+ CHECK_SYMBOL (symbol);
if (CONSP (XSYMBOL (symbol)->function)
&& EQ (XCAR (XSYMBOL (symbol)->function), Qautoload))
LOADHIST_ATTACH (Fcons (Qt, symbol));
definition = Ffset (symbol, definition);
- LOADHIST_ATTACH (symbol);
+ LOADHIST_ATTACH (Fcons (Qdefun, symbol));
if (!NILP (docstring))
Fput (symbol, Qfunction_documentation, docstring);
return definition;
DEFUN ("interactive-form", Finteractive_form, Sinteractive_form, 1, 1, 0,
doc: /* Return the interactive form of CMD or nil if none.
-CMD must be a command. Value, if non-nil, is a list
-\(interactive SPEC). */)
+If CMD is not a command, the return value is nil.
+Value, if non-nil, is a list \(interactive SPEC). */)
(cmd)
Lisp_Object cmd;
{
register Lisp_Object valcontents, newval;
struct buffer *buf;
{
- int offset;
-
switch (SWITCH_ENUM_CAST (XTYPE (valcontents)))
{
case Lisp_Misc:
- (char *) &buffer_defaults);
int idx = PER_BUFFER_IDX (offset);
- Lisp_Object tail, buf;
+ Lisp_Object tail;
if (idx <= 0)
break;
}
DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0,
- doc: /* Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated.
+ doc: /* Set SYMBOL's default value to VALUE. SYMBOL and VALUE are evaluated.
The default value is seen in buffers that do not have their own values
for this variable. */)
(symbol, value)
return value;
}
-DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0,
+DEFUN ("setq-default", Fsetq_default, Ssetq_default, 0, UNEVALLED, 0,
doc: /* Set the default value of variable VAR to VALUE.
VAR, the variable name, is literal (not evaluated);
VALUE is an expression: it is evaluated and its value returned.
that do not have their own values for the variable.
More generally, you can use multiple variables and values, as in
- (setq-default SYMBOL VALUE SYMBOL VALUE...)
-This sets each SYMBOL's default value to the corresponding VALUE.
-The VALUE for the Nth SYMBOL can refer to the new default values
-of previous SYMs.
-usage: (setq-default SYMBOL VALUE [SYMBOL VALUE...]) */)
+ (setq-default VAR VALUE VAR VALUE...)
+This sets each VAR's default value to the corresponding VALUE.
+The VALUE for the Nth VAR can refer to the new default values
+of previous VARs.
+usage: (setq-default [VAR VALUE...]) */)
(args)
Lisp_Object args;
{
a `let'-style binding made in this buffer is in effect,
does not make the variable buffer-local. Return VARIABLE.
+In most cases it is better to use `make-local-variable',
+which makes a variable local in just one buffer.
+
The function `default-value' gets the default value and `set-default' sets it. */)
(variable)
register Lisp_Object variable;
Other buffers will continue to share a common default value.
\(The buffer-local value of VARIABLE starts out as the same value
VARIABLE previously had. If VARIABLE was void, it remains void.\)
-See also `make-variable-buffer-local'. Return VARIABLE.
+Return VARIABLE.
If the variable is already arranged to become local when set,
this function causes a local value to exist for this buffer,
(set (make-local-variable 'VARIABLE) VALUE-EXP)
works.
+See also `make-variable-buffer-local'.
+
Do not use `make-local-variable' to make a hook variable buffer-local.
Instead, use `add-hook' and specify t for the LOCAL argument. */)
(variable)
DEFUN ("make-variable-frame-local", Fmake_variable_frame_local, Smake_variable_frame_local,
1, 1, "vMake Variable Frame Local: ",
doc: /* Enable VARIABLE to have frame-local bindings.
-When a frame-local binding exists in the current frame,
-it is in effect whenever the current buffer has no buffer-local binding.
-A frame-local binding is actually a frame parameter value;
-thus, any given frame has a local binding for VARIABLE if it has
-a value for the frame parameter named VARIABLE. Return VARIABLE.
-See `modify-frame-parameters' for how to set frame parameters. */)
+This does not create any frame-local bindings for VARIABLE,
+it just makes them possible.
+
+A frame-local binding is actually a frame parameter value.
+If a frame F has a value for the frame parameter named VARIABLE,
+that also acts as a frame-local binding for VARIABLE in F--
+provided this function has been called to enable VARIABLE
+to have frame-local bindings at all.
+
+The only way to create a frame-local binding for VARIABLE in a frame
+is to set the VARIABLE frame parameter of that frame. See
+`modify-frame-parameters' for how to set frame parameters.
+
+Buffer-local bindings take precedence over frame-local bindings. */)
(variable)
register Lisp_Object variable;
{
DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p, Slocal_variable_if_set_p,
1, 2, 0,
- doc: /* Non-nil if VARIABLE will be local in buffer BUFFER if it is set there.
+ doc: /* Non-nil if VARIABLE will be local in buffer BUFFER when set there.
+More precisely, this means that setting the variable \(with `set' or`setq'),
+while it does not have a `let'-style binding that was made in BUFFER,
+will produce a buffer local binding. See Info node
+`(elisp)Creating Buffer-Local'.
BUFFER defaults to the current buffer. */)
(variable, buffer)
register Lisp_Object variable, buffer;
return hare;
}
-DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0,
+DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 2, 0,
doc: /* Return the function at the end of OBJECT's function chain.
-If OBJECT is a symbol, follow all function indirections and return the final
-function binding.
-If OBJECT is not a symbol, just return it.
-Signal a void-function error if the final symbol is unbound.
+If OBJECT is not a symbol, just return it. Otherwise, follow all
+function indirections to find the final function binding and return it.
+If the final symbol in the chain is unbound, signal a void-function error.
+Optional arg NOERROR non-nil means to return nil instead of signalling.
Signal a cyclic-function-indirection error if there is a loop in the
function chain of symbols. */)
- (object)
+ (object, noerror)
register Lisp_Object object;
+ Lisp_Object noerror;
{
Lisp_Object result;
result = indirect_function (object);
if (EQ (result, Qunbound))
- return Fsignal (Qvoid_function, Fcons (object, Qnil));
+ return (NILP (noerror)
+ ? Fsignal (Qvoid_function, Fcons (object, Qnil))
+ : Qnil);
return result;
}
\f
}
else if (CHAR_TABLE_P (array))
{
- Lisp_Object val;
-
- val = Qnil;
-
- if (idxval < 0)
- args_out_of_range (array, idx);
- if (idxval < CHAR_TABLE_ORDINARY_SLOTS)
- {
- /* For ASCII and 8-bit European characters, the element is
- stored in the top table. */
- val = XCHAR_TABLE (array)->contents[idxval];
- if (NILP (val))
- val = XCHAR_TABLE (array)->defalt;
- while (NILP (val)) /* Follow parents until we find some value. */
- {
- array = XCHAR_TABLE (array)->parent;
- if (NILP (array))
- return Qnil;
- val = XCHAR_TABLE (array)->contents[idxval];
- if (NILP (val))
- val = XCHAR_TABLE (array)->defalt;
- }
- return val;
- }
- else
- {
- int code[4], i;
- Lisp_Object sub_table;
-
- SPLIT_CHAR (idxval, code[0], code[1], code[2]);
- if (code[1] < 32) code[1] = -1;
- else if (code[2] < 32) code[2] = -1;
-
- /* Here, the possible range of CODE[0] (== charset ID) is
- 128..MAX_CHARSET. Since the top level char table contains
- data for multibyte characters after 256th element, we must
- increment CODE[0] by 128 to get a correct index. */
- code[0] += 128;
- code[3] = -1; /* anchor */
-
- try_parent_char_table:
- sub_table = array;
- for (i = 0; code[i] >= 0; i++)
- {
- val = XCHAR_TABLE (sub_table)->contents[code[i]];
- if (SUB_CHAR_TABLE_P (val))
- sub_table = val;
- else
- {
- if (NILP (val))
- val = XCHAR_TABLE (sub_table)->defalt;
- if (NILP (val))
- {
- array = XCHAR_TABLE (array)->parent;
- if (!NILP (array))
- goto try_parent_char_table;
- }
- return val;
- }
- }
- /* Here, VAL is a sub char table. We try the default value
- and parent. */
- val = XCHAR_TABLE (val)->defalt;
- if (NILP (val))
- {
- array = XCHAR_TABLE (array)->parent;
- if (!NILP (array))
- goto try_parent_char_table;
- }
- return val;
- }
+ CHECK_CHARACTER (idx);
+ return CHAR_TABLE_REF (array, idxval);
}
else
{
}
}
-/* Don't use alloca for relocating string data larger than this, lest
- we overflow their stack. The value is the same as what used in
- fns.c for base64 handling. */
-#define MAX_ALLOCA 16*1024
-
DEFUN ("aset", Faset, Saset, 3, 3, 0,
doc: /* Store into the element of ARRAY at index IDX the value NEWELT.
Return NEWELT. ARRAY may be a vector, a string, a char-table or a
}
else if (CHAR_TABLE_P (array))
{
- if (idxval < 0)
- args_out_of_range (array, idx);
- if (idxval < CHAR_TABLE_ORDINARY_SLOTS)
- XCHAR_TABLE (array)->contents[idxval] = newelt;
- else
- {
- int code[4], i;
- Lisp_Object val;
-
- SPLIT_CHAR (idxval, code[0], code[1], code[2]);
- if (code[1] < 32) code[1] = -1;
- else if (code[2] < 32) code[2] = -1;
-
- /* See the comment of the corresponding part in Faref. */
- code[0] += 128;
- code[3] = -1; /* anchor */
- for (i = 0; code[i + 1] >= 0; i++)
- {
- val = XCHAR_TABLE (array)->contents[code[i]];
- if (SUB_CHAR_TABLE_P (val))
- array = val;
- else
- {
- Lisp_Object temp;
-
- /* VAL is a leaf. Create a sub char table with the
- default value VAL or XCHAR_TABLE (array)->defalt
- and look into it. */
-
- temp = make_sub_char_table (NILP (val)
- ? XCHAR_TABLE (array)->defalt
- : val);
- XCHAR_TABLE (array)->contents[code[i]] = temp;
- array = temp;
- }
- }
- XCHAR_TABLE (array)->contents[code[i]] = newelt;
- }
+ CHECK_CHARACTER (idx);
+ CHAR_TABLE_SET (array, idxval, newelt);
}
else if (STRING_MULTIBYTE (array))
{
if (idxval < 0 || idxval >= SCHARS (array))
args_out_of_range (array, idx);
- CHECK_NUMBER (newelt);
+ CHECK_CHARACTER (newelt);
nbytes = SBYTES (array);
/* We must relocate the string data. */
int nchars = SCHARS (array);
unsigned char *str;
+ USE_SAFE_ALLOCA;
- str = (nbytes <= MAX_ALLOCA
- ? (unsigned char *) alloca (nbytes)
- : (unsigned char *) xmalloc (nbytes));
+ SAFE_ALLOCA (str, unsigned char *, nbytes);
bcopy (SDATA (array), str, nbytes);
allocate_string_data (XSTRING (array), nchars,
nbytes + new_bytes - prev_bytes);
p1 = SDATA (array) + idxval_byte;
bcopy (str + idxval_byte + prev_bytes, p1 + new_bytes,
nbytes - (idxval_byte + prev_bytes));
- if (nbytes > MAX_ALLOCA)
- xfree (str);
+ SAFE_FREE ();
clear_string_char_byte_cache ();
}
while (new_bytes--)
args_out_of_range (array, idx);
CHECK_NUMBER (newelt);
- if (XINT (newelt) < 0 || SINGLE_BYTE_CHAR_P (XINT (newelt)))
- SSET (array, idxval, XINT (newelt));
- else
- {
- /* We must relocate the string data while converting it to
- multibyte. */
- int idxval_byte, prev_bytes, new_bytes;
- unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *p0 = workbuf, *p1;
- unsigned char *origstr = SDATA (array), *str;
- int nchars, nbytes;
-
- nchars = SCHARS (array);
- nbytes = idxval_byte = count_size_as_multibyte (origstr, idxval);
- nbytes += count_size_as_multibyte (origstr + idxval,
- nchars - idxval);
- str = (nbytes <= MAX_ALLOCA
- ? (unsigned char *) alloca (nbytes)
- : (unsigned char *) xmalloc (nbytes));
- copy_text (SDATA (array), str, nchars, 0, 1);
- PARSE_MULTIBYTE_SEQ (str + idxval_byte, nbytes - idxval_byte,
- prev_bytes);
- new_bytes = CHAR_STRING (XINT (newelt), p0);
- allocate_string_data (XSTRING (array), nchars,
- nbytes + new_bytes - prev_bytes);
- bcopy (str, SDATA (array), idxval_byte);
- p1 = SDATA (array) + idxval_byte;
- while (new_bytes--)
- *p1++ = *p0++;
- bcopy (str + idxval_byte + prev_bytes, p1,
- nbytes - (idxval_byte + prev_bytes));
- if (nbytes > MAX_ALLOCA)
- xfree (str);
- clear_string_char_byte_cache ();
- }
+ if (XINT (newelt) >= 0 && ! SINGLE_BYTE_CHAR_P (XINT (newelt)))
+ args_out_of_range (array, newelt);
+ SSET (array, idxval, XINT (newelt));
}
return newelt;
int nargs;
Lisp_Object *args;
{
+ int argnum;
+ for (argnum = 2; argnum < nargs; argnum++)
+ if (FLOATP (args[argnum]))
+ return float_arith_driver (0, 0, Adiv, nargs, args);
return arith_driver (Adiv, nargs, args);
}
staticpro (&Qargs_out_of_range);
staticpro (&Qvoid_function);
staticpro (&Qcyclic_function_indirection);
+ staticpro (&Qcyclic_variable_indirection);
staticpro (&Qvoid_variable);
staticpro (&Qsetting_constant);
staticpro (&Qinvalid_read_syntax);
sigsetmask (SIGEMPTYMASK);
#endif /* not BSD4_1 */
+ SIGNAL_THREAD_CHECK (signo);
Fsignal (Qarith_error, Qnil);
}