/* Lisp parsing and input streams.
-Copyright (C) 1985-1989, 1993-1995, 1997-2011 Free Software Foundation, Inc.
+Copyright (C) 1985-1989, 1993-1995, 1997-2012 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <sys/stat.h>
#include <sys/file.h>
#include <errno.h>
-#include <limits.h> /* for CHAR_BIT */
+#include <limits.h> /* For CHAR_BIT. */
#include <setjmp.h>
#include "lisp.h"
#include "intervals.h"
-#include "buffer.h"
#include "character.h"
+#include "buffer.h"
#include "charset.h"
#include "coding.h"
#include <epaths.h>
#define file_tell ftell
#endif
-/* hash table read constants */
+/* Hash table read constants. */
static Lisp_Object Qhash_table, Qdata;
static Lisp_Object Qtest, Qsize;
static Lisp_Object Qweakness;
/* File for get_file_char to read from. Use by load. */
static FILE *instream;
-/* When nonzero, read conses in pure space */
-static int read_pure;
-
/* For use within read-from-string (this reader is non-reentrant!!) */
-static EMACS_INT read_from_string_index;
-static EMACS_INT read_from_string_index_byte;
-static EMACS_INT read_from_string_limit;
+static ptrdiff_t read_from_string_index;
+static ptrdiff_t read_from_string_index_byte;
+static ptrdiff_t read_from_string_limit;
/* Number of characters read in the current call to Fread or
- Fread_from_string. */
+ Fread_from_string. */
static EMACS_INT readchar_count;
/* This contains the last string skipped with #@. */
/* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char,
Qlambda, or a cons, we use this to keep an unread character because
a file stream can't handle multibyte-char unreading. The value -1
- means that there's no unread character. */
+ means that there's no unread character. */
static int unread_char;
static int
{
register struct buffer *inbuffer = XBUFFER (readcharfun);
- EMACS_INT pt_byte = BUF_PT_BYTE (inbuffer);
+ ptrdiff_t pt_byte = BUF_PT_BYTE (inbuffer);
if (pt_byte >= BUF_ZV_BYTE (inbuffer))
return -1;
{
register struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
- EMACS_INT bytepos = marker_byte_position (readcharfun);
+ ptrdiff_t bytepos = marker_byte_position (readcharfun);
if (bytepos >= BUF_ZV_BYTE (inbuffer))
return -1;
else if (BUFFERP (readcharfun))
{
struct buffer *b = XBUFFER (readcharfun);
- EMACS_INT charpos = BUF_PT (b);
- EMACS_INT bytepos = BUF_PT_BYTE (b);
+ ptrdiff_t charpos = BUF_PT (b);
+ ptrdiff_t bytepos = BUF_PT_BYTE (b);
if (! NILP (BVAR (b, enable_multibyte_characters)))
BUF_DEC_POS (b, bytepos);
else if (MARKERP (readcharfun))
{
struct buffer *b = XMARKER (readcharfun)->buffer;
- EMACS_INT bytepos = XMARKER (readcharfun)->bytepos;
+ ptrdiff_t bytepos = XMARKER (readcharfun)->bytepos;
XMARKER (readcharfun)->charpos--;
if (! NILP (BVAR (b, enable_multibyte_characters)))
c = getc (instream);
#ifdef EINTR
- /* Interrupted reads have been observed while reading over the network */
+ /* Interrupted reads have been observed while reading over the network. */
while (c == EOF && ferror (instream) && errno == EINTR)
{
UNBLOCK_INPUT;
int sec, usec;
double duration = extract_float (seconds);
- sec = (int) duration;
- usec = (duration - sec) * 1000000;
+ if (0 < duration)
+ duration_to_sec_usec (duration, &sec, &usec);
+ else
+ sec = usec = 0;
+
EMACS_GET_TIME (end_time);
EMACS_SET_SECS_USECS (wait_time, sec, usec);
EMACS_ADD_TIME (end_time, end_time, wait_time);
}
/* Stop scanning if no colon was found before end marker. */
- if (!in_file_vars)
+ if (!in_file_vars || ch == '\n' || ch == EOF)
break;
while (i > 0 && (var[i - 1] == ' ' || var[i - 1] == '\t'))
ch = READCHAR;
}
if (! in_file_vars)
- /* The value was terminated by an end-marker, which
- remove. */
+ /* The value was terminated by an end-marker, which remove. */
i -= 3;
while (i > 0 && (val[i - 1] == ' ' || val[i - 1] == '\t'))
i--;
{
register FILE *stream;
register int fd = -1;
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
struct gcpro gcpro1, gcpro2, gcpro3;
Lisp_Object found, efound, hist_file_name;
/* 1 means we printed the ".el is newer" message. */
/* Avoid weird lossage with null string as arg,
- since it would try to load a directory as a Lisp file */
+ since it would try to load a directory as a Lisp file. */
if (SBYTES (file) > 0)
{
ptrdiff_t size = SBYTES (file);
Vload_source_file_function. */
specbind (Qlexical_binding, Qnil);
- /* Get the name for load-history. */
+ /* Get the name for load-history. */
hist_file_name = (! NILP (Vpurify_flag)
? Fconcat (2, (tmp[0] = Ffile_name_directory (file),
tmp[1] = Ffile_name_nondirectory (found),
}
unbind_to (count, Qnil);
- /* Run any eval-after-load forms for this file */
+ /* Run any eval-after-load forms for this file. */
if (!NILP (Ffboundp (Qdo_after_load_evaluation)))
call1 (Qdo_after_load_evaluation, hist_file_name) ;
}
static Lisp_Object
-load_unwind (Lisp_Object arg) /* used as unwind-protect function in load */
+load_unwind (Lisp_Object arg) /* Used as unwind-protect function in load. */
{
FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer;
if (stream != NULL)
openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate)
{
register int fd;
- EMACS_INT fn_size = 100;
+ ptrdiff_t fn_size = 100;
char buf[100];
register char *fn = buf;
int absolute = 0;
- EMACS_INT want_length;
+ ptrdiff_t want_length;
Lisp_Object filename;
struct stat st;
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6;
Lisp_Object string, tail, encoded_fn;
- EMACS_INT max_suffix_len = 0;
+ ptrdiff_t max_suffix_len = 0;
CHECK_STRING (str);
{
filename = Fexpand_file_name (str, XCAR (path));
if (!complete_filename_p (filename))
- /* If there are non-absolute elts in PATH (eg ".") */
+ /* If there are non-absolute elts in PATH (eg "."). */
/* Of course, this could conceivably lose if luser sets
- default-directory to be something non-absolute... */
+ default-directory to be something non-absolute... */
{
filename = Fexpand_file_name (filename, BVAR (current_buffer, directory));
if (!complete_filename_p (filename))
- /* Give up on this path element! */
+ /* Give up on this path element! */
continue;
}
{
/* Check that we can access or open it. */
if (NATNUMP (predicate))
- fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1;
+ fd = (((XFASTINT (predicate) & ~INT_MAX) == 0
+ && access (pfn, XFASTINT (predicate)) == 0)
+ ? 1 : -1);
else
fd = emacs_open (pfn, O_RDONLY, 0);
{
tem = XCAR (tail);
- /* Find the feature's previous assoc list... */
+ /* Find the feature's previous assoc list... */
if (!NILP (Fequal (filename, Fcar (tem))))
{
foundit = 1;
- /* If we're loading the entire file, remove old data. */
+ /* If we're loading the entire file, remove old data. */
if (entire)
{
if (NILP (prev))
Vload_history);
}
-static Lisp_Object
-unreadpure (Lisp_Object junk) /* Used as unwind-protect function in readevalloop */
-{
- read_pure = 0;
- return Qnil;
-}
-
static Lisp_Object
readevalloop_1 (Lisp_Object old)
{
{
register int c;
register Lisp_Object val;
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
struct buffer *b = 0;
int continue_reading_p;
GCPRO4 (sourcename, readfun, start, end);
- /* Try to ensure sourcename is a truename, except whilst preloading. */
+ /* Try to ensure sourcename is a truename, except whilst preloading. */
if (NILP (Vpurify_flag)
&& !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename))
&& !NILP (Ffboundp (Qfile_truename)))
continue_reading_p = 1;
while (continue_reading_p)
{
- int count1 = SPECPDL_INDEX ();
+ ptrdiff_t count1 = SPECPDL_INDEX ();
if (b != 0 && NILP (BVAR (b, name)))
error ("Reading from killed buffer");
/* Ignore whitespace here, so we can detect eof. */
if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r'
- || c == 0x8a0) /* NBSP */
+ || c == 0xa0) /* NBSP */
goto read_next;
if (!NILP (Vpurify_flag) && c == '(')
{
- record_unwind_protect (unreadpure, Qnil);
- val = read_list (-1, readcharfun);
+ val = read_list (0, readcharfun);
}
else
{
This function preserves the position of point. */)
(Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print)
{
- int count = SPECPDL_INDEX ();
+ ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object tem, buf;
if (NILP (buffer))
This function does not move point. */)
(Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function)
{
- /* FIXME: Do the eval-sexp-add-defvars danse! */
- int count = SPECPDL_INDEX ();
+ /* FIXME: Do the eval-sexp-add-defvars dance! */
+ ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object tem, cbuf;
cbuf = Fcurrent_buffer ();
specbind (Qstandard_output, tem);
specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list));
- /* readevalloop calls functions which check the type of start and end. */
+ /* `readevalloop' calls functions which check the type of start and end. */
readevalloop (cbuf, 0, BVAR (XBUFFER (cbuf), filename),
!NILP (printflag), Qnil, read_function,
start, end);
doc: /* Read one Lisp expression which is represented as text by STRING.
Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
FINAL-STRING-INDEX is an integer giving the position of the next
- remaining chararacter in STRING.
+ remaining character in STRING.
START and END optionally delimit a substring of STRING from which to read;
they default to 0 and (length STRING) respectively. */)
(Lisp_Object string, Lisp_Object start, Lisp_Object end)
{
Lisp_Object ret;
CHECK_STRING (string);
- /* read_internal_start sets read_from_string_index. */
+ /* `read_internal_start' sets `read_from_string_index'. */
ret = read_internal_start (string, start, end);
return Fcons (ret, make_number (read_from_string_index));
}
/* Function to set up the global context we need in toplevel read
- calls. */
+ calls. */
static Lisp_Object
read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end)
-/* start, end only used when stream is a string. */
+/* `start', `end' only used when stream is a string. */
{
Lisp_Object retval;
if (STRINGP (stream)
|| ((CONSP (stream) && STRINGP (XCAR (stream)))))
{
- EMACS_INT startval, endval;
+ ptrdiff_t startval, endval;
Lisp_Object string;
if (STRINGP (stream))
else
{
CHECK_NUMBER (end);
- endval = XINT (end);
- if (endval < 0 || endval > SCHARS (string))
+ if (! (0 <= XINT (end) && XINT (end) <= SCHARS (string)))
args_out_of_range (string, end);
+ endval = XINT (end);
}
if (NILP (start))
else
{
CHECK_NUMBER (start);
- startval = XINT (start);
- if (startval < 0 || startval > endval)
+ if (! (0 <= XINT (start) && XINT (start) <= endval))
args_out_of_range (string, start);
+ startval = XINT (start);
}
read_from_string_index = startval;
read_from_string_index_byte = string_char_to_byte (string, startval);
/* Use this for recursive reads, in contexts where internal tokens
- are not allowed. */
+ are not allowed. */
static Lisp_Object
read0 (Lisp_Object readcharfun)
{
register int c = READCHAR;
/* \u allows up to four hex digits, \U up to eight. Default to the
- behavior for \u, and change this value in the case that \U is seen. */
+ behavior for \u, and change this value in the case that \U is seen. */
int unicode_hex_count = 4;
switch (c)
case 'x':
/* A hex escape, as in ANSI C. */
{
- int i = 0;
+ unsigned int i = 0;
int count = 0;
while (1)
{
UNREAD (c);
break;
}
- if (MAX_CHAR < i)
+ /* Allow hex escapes as large as ?\xfffffff, because some
+ packages use them to denote characters with modifiers. */
+ if ((CHAR_META | (CHAR_META - 1)) < i)
error ("Hex character out of range: \\x%x...", i);
count += count < 3;
}
while (++count <= unicode_hex_count)
{
c = READCHAR;
- /* isdigit and isalpha may be locale-specific, which we don't
- want. */
+ /* `isdigit' and `isalpha' may be locale-specific, which we don't
+ want. */
if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
{
/* Accept extended format for hashtables (extensible to
other types), e.g.
- #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */
+ #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */
Lisp_Object tmp = read_list (0, readcharfun);
Lisp_Object head = CAR_SAFE (tmp);
Lisp_Object data = Qnil;
Lisp_Object val = Qnil;
/* The size is 2 * number of allowed keywords to
- make-hash-table. */
+ make-hash-table. */
Lisp_Object params[10];
Lisp_Object ht;
Lisp_Object key = Qnil;
tmp = CDR_SAFE (tmp);
- /* This is repetitive but fast and simple. */
+ /* This is repetitive but fast and simple. */
params[param_count] = QCsize;
- params[param_count+1] = Fplist_get (tmp, Qsize);
+ params[param_count + 1] = Fplist_get (tmp, Qsize);
if (!NILP (params[param_count + 1]))
param_count += 2;
params[param_count] = QCtest;
- params[param_count+1] = Fplist_get (tmp, Qtest);
+ params[param_count + 1] = Fplist_get (tmp, Qtest);
if (!NILP (params[param_count + 1]))
param_count += 2;
params[param_count] = QCweakness;
- params[param_count+1] = Fplist_get (tmp, Qweakness);
+ params[param_count + 1] = Fplist_get (tmp, Qweakness);
if (!NILP (params[param_count + 1]))
param_count += 2;
params[param_count] = QCrehash_size;
- params[param_count+1] = Fplist_get (tmp, Qrehash_size);
+ params[param_count + 1] = Fplist_get (tmp, Qrehash_size);
if (!NILP (params[param_count + 1]))
param_count += 2;
params[param_count] = QCrehash_threshold;
- params[param_count+1] = Fplist_get (tmp, Qrehash_threshold);
+ params[param_count + 1] = Fplist_get (tmp, Qrehash_threshold);
if (!NILP (params[param_count + 1]))
param_count += 2;
- /* This is the hashtable data. */
+ /* This is the hashtable data. */
data = Fplist_get (tmp, Qdata);
- /* Now use params to make a new hashtable and fill it. */
+ /* Now use params to make a new hashtable and fill it. */
ht = Fmake_hash_table (param_count, params);
while (CONSP (data))
if (c == '[')
{
Lisp_Object tmp;
- EMACS_INT depth, size;
+ int depth;
+ ptrdiff_t size;
tmp = read_vector (readcharfun, 0);
- if (!INTEGERP (AREF (tmp, 0)))
+ size = ASIZE (tmp);
+ if (size == 0)
+ error ("Invalid size char-table");
+ if (! RANGED_INTEGERP (1, AREF (tmp, 0), 3))
error ("Invalid depth in char-table");
depth = XINT (AREF (tmp, 0));
- if (depth < 1 || depth > 3)
- error ("Invalid depth in char-table");
- size = ASIZE (tmp) - 2;
- if (chartab_size [depth] != size)
+ if (chartab_size[depth] != size - 2)
error ("Invalid size char-table");
XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE);
return tmp;
build them using function calls. */
Lisp_Object tmp;
tmp = read_vector (readcharfun, 1);
- return Fmake_byte_code (ASIZE (tmp),
- XVECTOR (tmp)->contents);
+ make_byte_code (XVECTOR (tmp));
+ return tmp;
}
if (c == '(')
{
uninterned_symbol = 1;
c = READCHAR;
if (!(c > 040
- && c != 0x8a0
+ && c != 0xa0 /* NBSP */
&& (c >= 0200
|| strchr ("\"';()[]#`,", c) == NULL)))
{
n for #n#. */
if (c == '=')
{
- /* Make a placeholder for #n# to use temporarily */
+ /* Make a placeholder for #n# to use temporarily. */
Lisp_Object placeholder;
Lisp_Object cell;
cell = Fcons (make_number (n), placeholder);
read_objects = Fcons (cell, read_objects);
- /* Read the object itself. */
+ /* Read the object itself. */
tem = read0 (readcharfun);
- /* Now put it everywhere the placeholder was... */
+ /* Now put it everywhere the placeholder was... */
substitute_object_in_subtree (tem, placeholder);
/* ...and #n# will use the real value from now on. */
So we now use the same heuristic as for backquote: old-style
unquotes are only recognized when first on a list, and when
followed by a space.
- Because it's more difficult to peak 2 chars ahead, a new-style
+ Because it's more difficult to peek 2 chars ahead, a new-style
,@ can still not be used outside of a `, unless it's in the middle
of a list. */
if (new_backquote_flag
ch = read_escape (readcharfun, 1);
- /* CH is -1 if \ newline has just been seen */
+ /* CH is -1 if \ newline has just been seen. */
if (ch == -1)
{
if (p == read_buffer)
force_singlebyte = 1;
else if (! ASCII_CHAR_P (ch))
force_multibyte = 1;
- else /* i.e. ASCII_CHAR_P (ch) */
+ else /* I.e. ASCII_CHAR_P (ch). */
{
/* Allow `\C- ' and `\C-?'. */
if (modifiers == CHAR_CTL)
/* If purifying, and string starts with \ newline,
return zero instead. This is for doc strings
- that we are really going to find in etc/DOC.nn.nn */
+ that we are really going to find in etc/DOC.nn.nn. */
if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel)
return make_number (0);
- if (force_multibyte)
- /* READ_BUFFER already contains valid multibyte forms. */
- ;
- else if (force_singlebyte)
+ if (! force_multibyte && force_singlebyte)
{
+ /* READ_BUFFER contains raw 8-bit bytes and no multibyte
+ forms. Convert it to unibyte. */
nchars = str_as_unibyte ((unsigned char *) read_buffer,
p - read_buffer);
p = read_buffer + nchars;
}
- else
- {
- /* Otherwise, READ_BUFFER contains only ASCII. */
- }
- if (read_pure)
- return make_pure_string (read_buffer, nchars, p - read_buffer,
- (force_multibyte
- || (p - read_buffer != nchars)));
return make_specified_string (read_buffer, nchars, p - read_buffer,
(force_multibyte
|| (p - read_buffer != nchars)));
default:
default_label:
if (c <= 040) goto retry;
- if (c == 0x8a0) /* NBSP */
+ if (c == 0xa0) /* NBSP */
goto retry;
read_symbol:
c = READCHAR;
}
while (c > 040
- && c != 0x8a0 /* NBSP */
+ && c != 0xa0 /* NBSP */
&& (c >= 0200
|| strchr ("\"';()[]#`,", c) == NULL));
}
{
Lisp_Object name, result;
- EMACS_INT nbytes = p - read_buffer;
- EMACS_INT nchars
+ ptrdiff_t nbytes = p - read_buffer;
+ ptrdiff_t nchars
= (multibyte
? multibyte_chars_in_text ((unsigned char *) read_buffer,
nbytes)
: nbytes);
- if (uninterned_symbol && ! NILP (Vpurify_flag))
- name = make_pure_string (read_buffer, nchars, nbytes, multibyte);
- else
- name = make_specified_string (read_buffer, nchars, nbytes,multibyte);
+ name = ((uninterned_symbol && ! NILP (Vpurify_flag)
+ ? make_pure_string : make_specified_string)
+ (read_buffer, nchars, nbytes, multibyte));
result = (uninterned_symbol ? Fmake_symbol (name)
: Fintern (name, Qnil));
if (EQ (Vread_with_symbol_positions, Qt)
|| EQ (Vread_with_symbol_positions, readcharfun))
- Vread_symbol_positions_list =
- Fcons (Fcons (result, make_number (start_position)),
- Vread_symbol_positions_list);
+ Vread_symbol_positions_list
+ = Fcons (Fcons (result, make_number (start_position)),
+ Vread_symbol_positions_list);
return result;
}
}
}
\f
-/* List of nodes we've seen during substitute_object_in_subtree. */
+/* List of nodes we've seen during substitute_object_in_subtree. */
static Lisp_Object seen_list;
static void
{
Lisp_Object check_object;
- /* We haven't seen any objects when we start. */
+ /* We haven't seen any objects when we start. */
seen_list = Qnil;
- /* Make all the substitutions. */
+ /* Make all the substitutions. */
check_object
= substitute_object_recurse (object, placeholder, object);
- /* Clear seen_list because we're done with it. */
+ /* Clear seen_list because we're done with it. */
seen_list = Qnil;
/* The returned object here is expected to always eq the
- original. */
+ original. */
if (!EQ (check_object, object))
error ("Unexpected mutation error in reader");
}
-/* Feval doesn't get called from here, so no gc protection is needed. */
+/* Feval doesn't get called from here, so no gc protection is needed. */
#define SUBSTITUTE(get_val, set_val) \
do { \
Lisp_Object old_value = get_val; \
static Lisp_Object
substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree)
{
- /* If we find the placeholder, return the target object. */
+ /* If we find the placeholder, return the target object. */
if (EQ (placeholder, subtree))
return object;
- /* If we've been to this node before, don't explore it again. */
+ /* If we've been to this node before, don't explore it again. */
if (!EQ (Qnil, Fmemq (subtree, seen_list)))
return subtree;
case Lisp_String:
{
/* Check for text properties in each interval.
- substitute_in_interval contains part of the logic. */
+ substitute_in_interval contains part of the logic. */
INTERVAL root_interval = STRING_INTERVALS (subtree);
Lisp_Object arg = Fcons (object, placeholder);
return subtree;
}
- /* Other types don't recurse any further. */
+ /* Other types don't recurse any further. */
default:
return subtree;
}
tem = read_list (1, readcharfun);
len = Flength (tem);
- vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil));
+ vector = Fmake_vector (len, Qnil);
size = ASIZE (vector);
ptr = XVECTOR (vector)->contents;
}
/* Now handle the bytecode slot. */
- ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr;
+ ptr[COMPILED_BYTECODE] = bytestr;
}
else if (i == COMPILED_DOC_STRING
&& STRINGP (item)
item = Fstring_as_multibyte (item);
}
}
- ptr[i] = read_pure ? Fpurecopy (item) : item;
+ ptr[i] = item;
otem = XCONS (tem);
tem = Fcdr (tem);
free_cons (otem);
return vector;
}
-/* FLAG = 1 means check for ] to terminate rather than ) and .
- FLAG = -1 means check for starting with defun
- and make structure pure. */
+/* FLAG = 1 means check for ] to terminate rather than ) and . */
static Lisp_Object
read_list (int flag, register Lisp_Object readcharfun)
{
- /* -1 means check next element for defun,
- 0 means don't check,
- 1 means already checked and found defun. */
- int defunflag = flag < 0 ? -1 : 0;
Lisp_Object val, tail;
register Lisp_Object elt, tem;
struct gcpro gcpro1, gcpro2;
We don't use Fexpand_file_name because that would make
the directory absolute now. */
elt = concat2 (build_string ("../lisp/"),
- Ffile_name_nondirectory (elt));
+ Ffile_name_nondirectory (elt));
}
else if (EQ (elt, Vload_file_name)
&& ! NILP (elt)
}
invalid_syntax ("] in a list");
}
- tem = (read_pure && flag <= 0
- ? pure_cons (elt, Qnil)
- : Fcons (elt, Qnil));
+ tem = Fcons (elt, Qnil);
if (!NILP (tail))
XSETCDR (tail, tem);
else
val = tem;
tail = tem;
- if (defunflag < 0)
- defunflag = EQ (elt, Qdefun);
- else if (defunflag > 0)
- read_pure = 1;
}
}
\f
static Lisp_Object initial_obarray;
-/* oblookup stores the bucket number here, for the sake of Funintern. */
+/* `oblookup' stores the bucket number here, for the sake of Funintern. */
static size_t oblookup_last_bucket_number;
Also store the bucket number in oblookup_last_bucket_number. */
Lisp_Object
-oblookup (Lisp_Object obarray, register const char *ptr, EMACS_INT size, EMACS_INT size_byte)
+oblookup (Lisp_Object obarray, register const char *ptr, ptrdiff_t size, ptrdiff_t size_byte)
{
size_t hash;
size_t obsize;
if (EQ (bucket, make_number (0)))
;
else if (!SYMBOLP (bucket))
- error ("Bad data in guts of obarray"); /* Like CADR error message */
+ error ("Bad data in guts of obarray"); /* Like CADR error message. */
else
for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next))
{
Qnil = intern_c_string ("nil");
/* Fmake_symbol inits fields of new symbols with Qunbound and Qnil,
- so those two need to be fixed manally. */
+ so those two need to be fixed manually. */
SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound);
XSYMBOL (Qunbound)->function = Qunbound;
XSYMBOL (Qunbound)->plist = Qnil;
/* XSYMBOL (Qnil)->function = Qunbound; */
SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil);
XSYMBOL (Qnil)->constant = 1;
+ XSYMBOL (Qnil)->declared_special = 1;
XSYMBOL (Qnil)->plist = 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. */
XSETSUBR (XSYMBOL (sym)->function, sname);
}
-#ifdef NOTDEF /* use fset in subr.el now */
+#ifdef NOTDEF /* Use fset in subr.el now! */
void
defalias (struct Lisp_Subr *sname, char *string)
{
const char *normal;
int turn_off_warning = 0;
- /* Compute the default load-path. */
+ /* Compute the default Vload-path, with the following logic:
+ If CANNOT_DUMP just use PATH_LOADSEARCH.
+ Else if purify-flag (ie dumping) start from PATH_DUMPLOADSEARCH;
+ otherwise start from PATH_LOADSEARCH.
+ If !initialized, then just set both Vload_path and dump_path.
+ If initialized, then if Vload_path != dump_path, do nothing.
+ (Presumably the load-path has already been changed by something.)
+ Also do nothing if Vinstallation_directory is nil.
+ Otherwise:
+ Remove site-lisp directories from the front of load-path.
+ Add installation-dir/lisp (if exists and not already a member),
+ at the front, and turn off warnings about missing directories
+ (because we are presumably running uninstalled).
+ If it does not exist, add dump_path at the end instead.
+ Add installation-dir/leim (if exists and not already a member)
+ at the front.
+ 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.
+ Finally, add the previously removed site-lisp directories back
+ at the front (if !no_site_lisp).
+
+ We then warn about any of the load-path elements that do not
+ exist. The only ones that might not exist are those from
+ PATH_LOADSEARCH, and perhaps dump_path.
+
+ Having done all this, we then throw it all away if purify-flag is
+ nil (ie, not dumping) and EMACSLOADPATH is set, and just
+ unconditionally use the latter value instead.
+ So AFAICS the only net results of all the previous steps will be
+ possibly to issue some irrelevant warnings.
+
+ FIXME? There's a case for saying that if we are running
+ uninstalled, the eventual installation directories should not yet
+ be included in load-path.
+ */
#ifdef CANNOT_DUMP
normal = PATH_LOADSEARCH;
Vload_path = decode_env_path (0, normal);
else
normal = PATH_DUMPLOADSEARCH;
- /* In a dumped Emacs, we normally have to reset the value of
- Vload_path from PATH_LOADSEARCH, since the value that was dumped
- uses ../lisp, instead of the path of the installed elisp
- libraries. However, if it appears that Vload_path was changed
- from the default before dumping, don't override that value. */
+ /* 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. */
if (initialized)
{
if (! NILP (Fequal (dump_path, Vload_path)))
{
Vload_path = decode_env_path (0, normal);
- if (!NILP (Vinstallation_directory))
+ if (no_site_lisp || !NILP (Vinstallation_directory))
{
Lisp_Object tem, tem1, sitelisp;
- /* Remove site-lisp dirs from path temporarily and store
- them in sitelisp, then conc them on at the end so
- they're always first in path. */
+ /* Remove "site-lisp" dirs from front of path temporarily
+ and store them in sitelisp, then conc them on at the
+ end so they're always first in path.
+ Note that this won't work if you used a
+ --enable-locallisppath element that does not happen
+ to contain "site-lisp" in its name.
+ */
sitelisp = Qnil;
while (1)
{
break;
}
- /* Add to the path the lisp subdir of the
- installation dir, if it exists. */
- tem = Fexpand_file_name (build_string ("lisp"),
- Vinstallation_directory);
- tem1 = Ffile_exists_p (tem);
- if (!NILP (tem1))
+ if (!NILP (Vinstallation_directory))
{
- if (NILP (Fmember (tem, Vload_path)))
+ /* Add to the path the lisp subdir of the
+ installation dir, if it exists. */
+ tem = Fexpand_file_name (build_string ("lisp"),
+ Vinstallation_directory);
+ tem1 = Ffile_exists_p (tem);
+ if (!NILP (tem1))
{
- turn_off_warning = 1;
- Vload_path = Fcons (tem, Vload_path);
+ if (NILP (Fmember (tem, Vload_path)))
+ {
+ turn_off_warning = 1;
+ Vload_path = Fcons (tem, Vload_path);
+ }
}
- }
- else
- /* That dir doesn't exist, so add the build-time
- Lisp dirs instead. */
- Vload_path = nconc2 (Vload_path, dump_path);
-
- /* Add leim under the installation dir, if it exists. */
- tem = Fexpand_file_name (build_string ("leim"),
- Vinstallation_directory);
- tem1 = Ffile_exists_p (tem);
- if (!NILP (tem1))
- {
- if (NILP (Fmember (tem, Vload_path)))
- Vload_path = Fcons (tem, Vload_path);
- }
-
- /* Add site-lisp under the installation dir, if it exists. */
- tem = Fexpand_file_name (build_string ("site-lisp"),
- Vinstallation_directory);
- tem1 = Ffile_exists_p (tem);
- if (!NILP (tem1))
- {
- if (NILP (Fmember (tem, Vload_path)))
- Vload_path = Fcons (tem, Vload_path);
- }
-
- /* 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. */
-
- if (NILP (Fequal (Vinstallation_directory, Vsource_directory)))
- {
- Lisp_Object tem2;
+ else
+ /* That dir doesn't exist, so add the build-time
+ Lisp dirs instead. */
+ Vload_path = nconc2 (Vload_path, dump_path);
- tem = Fexpand_file_name (build_string ("src/Makefile"),
+ /* Add leim under the installation dir, if it exists. */
+ tem = Fexpand_file_name (build_string ("leim"),
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))
+ if (!NILP (tem1))
{
- tem = Fexpand_file_name (build_string ("lisp"),
- Vsource_directory);
-
if (NILP (Fmember (tem, Vload_path)))
Vload_path = Fcons (tem, Vload_path);
+ }
- tem = Fexpand_file_name (build_string ("leim"),
- Vsource_directory);
+ /* 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_exists_p (tem);
+ if (!NILP (tem1))
+ {
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = Fcons (tem, Vload_path);
+ }
+ }
- if (NILP (Fmember (tem, Vload_path)))
- Vload_path = Fcons (tem, Vload_path);
+ /* 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 ("site-lisp"),
- Vsource_directory);
+ if (NILP (Fequal (Vinstallation_directory, Vsource_directory)))
+ {
+ 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);
- if (NILP (Fmember (tem, Vload_path)))
- Vload_path = Fcons (tem, Vload_path);
- }
- }
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = Fcons (tem, Vload_path);
+
+ tem = Fexpand_file_name (build_string ("leim"),
+ Vsource_directory);
+
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = Fcons (tem, Vload_path);
+
+ if (!no_site_lisp)
+ {
+ tem = Fexpand_file_name (build_string ("site-lisp"),
+ Vsource_directory);
+
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = Fcons (tem, Vload_path);
+ }
+ }
+ } /* Vinstallation_directory != Vsource_directory */
+ } /* if Vinstallation_directory */
if (!NILP (sitelisp) && !no_site_lisp)
Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path);
- }
- }
+ } /* if Vinstallation_directory || no_site_lisp */
+ } /* if dump_path == Vload_path */
}
- else
+ else /* !initialized */
{
/* NORMAL refers to the lisp dir in the source directory. */
/* We used to add ../lisp at the front here, but
Vload_path = decode_env_path (0, normal);
dump_path = Vload_path;
}
-#endif
+#endif /* CANNOT_DUMP */
#if (!(defined (WINDOWSNT) || (defined (HAVE_NS))))
/* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
confuses users. Since PATH_LOADSEARCH is always overridden by the
EMACSLOADPATH environment variable below, disable the warning on NT. */
+ /* HAVE_NS also uses EMACSLOADPATH. */
+
/* Warn if dirs in the *standard* path don't exist. */
if (!turn_off_warning)
{
if (STRINGP (dirfile))
{
dirfile = Fdirectory_file_name (dirfile);
+ /* Do we really need to warn about missing site-lisp dirs?
+ It's true that the installation should have created
+ them and added subdirs.el, but it's harmless if they
+ are not there. */
if (access (SSDATA (dirfile), 0) < 0)
dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
XCAR (path_tail));
{
fprintf (stderr, format, SDATA (dirname));
- /* Don't log the warning before we've initialized!! */
+ /* Don't log the warning before we've initialized!! */
if (initialized)
{
char *buffer;
DEFVAR_LISP ("values", Vvalues,
doc: /* List of values of all expressions which were read, evaluated and printed.
-Order is reverse chronological. */);
+ Order is reverse chronological. */);
+ XSYMBOL (intern ("values"))->declared_special = 0;
DEFVAR_LISP ("standard-input", Vstandard_input,
doc: /* Stream for read to get input from.
The positions are relative to the last call to `read' or
`read-from-string'. It is probably a bad idea to set this variable at
-the toplevel; bind it instead. */);
+the toplevel; bind it instead. */);
Vread_with_symbol_positions = Qnil;
DEFVAR_LISP ("read-symbol-positions-list", Vread_symbol_positions_list,
Note that a symbol will appear multiple times in this list, if it was
read multiple times. The list is in the same order as the symbols
-were read in. */);
+were read in. */);
Vread_symbol_positions_list = Qnil;
DEFVAR_LISP ("read-circle", Vread_circle,
Vread_circle = Qt;
DEFVAR_LISP ("load-path", Vload_path,
- doc: /* *List of directories to search for files to load.
+ doc: /* List of directories to search for files to load.
Each element is a string (directory name) or nil (try default directory).
Initialized based on EMACSLOADPATH environment variable, if any,
otherwise to default specified by file `epaths.h' when Emacs was built. */);
Non-nil means that the code in the current buffer should be evaluated
with lexical binding.
This variable is automatically set from the file variables of an
-interpreted Lisp file read using `load'. */);
+interpreted Lisp file read using `load'. Unlike other file local
+variables, this must be set in the first line of a file. */);
Fmake_variable_buffer_local (Qlexical_binding);
DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list,
HCoop / bpt / emacs.git / blobdiff