/* Random utility Lisp functions.
- Copyright (C) 1985-1987, 1993-1995, 1997-2012
- Free Software Foundation, Inc.
+
+Copyright (C) 1985-1987, 1993-1995, 1997-2013 Free Software Foundation, Inc.
This file is part of GNU Emacs.
With positive integer LIMIT, return random number in interval [0,LIMIT).
With argument t, set the random number seed from the current time and pid.
-Other values of LIMIT are ignored. */)
+With a string argument, set the seed based on the string's contents.
+Other values of LIMIT are ignored.
+
+See Info node `(elisp)Random Numbers' for more details. */)
(Lisp_Object limit)
{
EMACS_INT val;
before it's time to do a QUIT. This must be a power of 2. */
enum { QUIT_COUNT_HEURISTIC = 1 << 16 };
-/* Random data-structure functions */
+/* Random data-structure functions. */
+
+static void
+CHECK_LIST_END (Lisp_Object x, Lisp_Object y)
+{
+ CHECK_TYPE (NILP (x), Qlistp, y);
+}
DEFUN ("length", Flength, Slength, 1, 1, 0,
doc: /* Return the length of vector, list or string SEQUENCE.
DEFUN ("compare-strings", Fcompare_strings, Scompare_strings, 6, 7, 0,
doc: /* Compare the contents of two strings, converting to multibyte if needed.
-In string STR1, skip the first START1 characters and stop at END1.
-In string STR2, skip the first START2 characters and stop at END2.
-END1 and END2 default to the full lengths of the respective strings.
-
-Case is significant in this comparison if IGNORE-CASE is nil.
-Unibyte strings are converted to multibyte for comparison.
+The arguments START1, END1, START2, and END2, if non-nil, are
+positions specifying which parts of STR1 or STR2 to compare. In
+string STR1, compare the part between START1 (inclusive) and END1
+\(exclusive). If START1 is nil, it defaults to 0, the beginning of
+the string; if END1 is nil, it defaults to the length of the string.
+Likewise, in string STR2, compare the part between START2 and END2.
+
+The strings are compared by the numeric values of their characters.
+For instance, STR1 is "less than" STR2 if its first differing
+character has a smaller numeric value. If IGNORE-CASE is non-nil,
+characters are converted to lower-case before comparing them. Unibyte
+strings are converted to multibyte for comparison.
The value is t if the strings (or specified portions) match.
If string STR1 is less, the value is a negative number N;
if (!CONSP (arg) && !VECTORP (arg) && !STRINGP (arg))
wrong_type_argument (Qsequencep, arg);
- return concat (1, &arg, CONSP (arg) ? Lisp_Cons : XTYPE (arg), 0);
+ return concat (1, &arg, XTYPE (arg), 0);
}
/* This structure holds information of an argument of `concat' that is
tail = list;
prev = Qnil;
- while (!NILP (tail))
+ while (CONSP (tail))
{
CHECK_LIST_CONS (tail, list);
tem = XCAR (tail);
prev = tail;
QUIT;
}
- newcell = Fcons (prop, Fcons (val, Qnil));
+ newcell = list2 (prop, val);
if (NILP (prev))
return newcell;
else
d1 = extract_float (o1);
d2 = extract_float (o2);
/* If d is a NaN, then d != d. Two NaNs should be `equal' even
- though they are not =. */
+ though they are not =. */
return d1 == d2 || (d1 != d1 && d2 != d2);
}
CHECK_STRING (prompt);
#ifdef HAVE_MENUS
- if (FRAME_WINDOW_P (SELECTED_FRAME ())
- && (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event))
+ if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event))
&& use_dialog_box
- && have_menus_p ())
+ && window_system_available (SELECTED_FRAME ()))
{
Lisp_Object pane, menu, obj;
redisplay_preserve_echo_area (4);
- pane = Fcons (Fcons (build_string ("Yes"), Qt),
- Fcons (Fcons (build_string ("No"), Qnil),
- Qnil));
+ pane = list2 (Fcons (build_string ("Yes"), Qt),
+ Fcons (build_string ("No"), Qnil));
GCPRO1 (pane);
menu = Fcons (prompt, pane);
obj = Fx_popup_dialog (Qt, menu, Qnil);
Fding (Qnil);
Fdiscard_input ();
- message ("Please answer yes or no.");
+ message1 ("Please answer yes or no.");
Fsleep_for (make_number (2), Qnil);
}
}
return (NILP (tem)) ? Qnil : Qt;
}
+static Lisp_Object Qfuncall;
+
DEFUN ("provide", Fprovide, Sprovide, 1, 2, 0,
doc: /* Announce that FEATURE is a feature of the current Emacs.
The optional argument SUBFEATURES should be a list of symbols listing
/* Run any load-hooks for this file. */
tem = Fassq (feature, Vafter_load_alist);
if (CONSP (tem))
- Fprogn (XCDR (tem));
+ Fmapc (Qfuncall, XCDR (tem));
return feature;
}
static Lisp_Object require_nesting_list;
-static Lisp_Object
+static void
require_unwind (Lisp_Object old_value)
{
- return require_nesting_list = old_value;
+ require_nesting_list = old_value;
}
DEFUN ("require", Frequire, Srequire, 1, 3, 0,
usage: (widget-apply WIDGET PROPERTY &rest ARGS) */)
(ptrdiff_t nargs, Lisp_Object *args)
{
- /* This function can GC. */
+ /* This function can GC. */
Lisp_Object newargs[3];
struct gcpro gcpro1, gcpro2;
Lisp_Object result;
val = build_unibyte_string (str);
/* Fixme: Is this coding system necessarily right, even if
it is consistent with CODESET? If not, what to do? */
- Faset (v, make_number (i),
- code_convert_string_norecord (val, Vlocale_coding_system,
- 0));
+ ASET (v, i, code_convert_string_norecord (val, Vlocale_coding_system,
+ 0));
}
UNGCPRO;
return v;
{
str = nl_langinfo (months[i]);
val = build_unibyte_string (str);
- Faset (v, make_number (i),
- code_convert_string_norecord (val, Vlocale_coding_system, 0));
+ ASET (v, i, code_convert_string_norecord (val, Vlocale_coding_system,
+ 0));
}
UNGCPRO;
return v;
but is in the locale files. This could be used by ps-print. */
#ifdef PAPER_WIDTH
else if (EQ (item, Qpaper))
- {
- return list2 (make_number (nl_langinfo (PAPER_WIDTH)),
- make_number (nl_langinfo (PAPER_HEIGHT)));
- }
+ return list2i (nl_langinfo (PAPER_WIDTH), nl_langinfo (PAPER_HEIGHT));
#endif /* PAPER_WIDTH */
#endif /* HAVE_LANGINFO_CODESET*/
return Qnil;
/* Various symbols. */
-static Lisp_Object Qhash_table_p, Qkey, Qvalue;
-Lisp_Object Qeq, Qeql, Qequal;
+static Lisp_Object Qhash_table_p;
+static Lisp_Object Qkey, Qvalue, Qeql;
+Lisp_Object Qeq, Qequal;
Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness;
static Lisp_Object Qhash_table_test, Qkey_or_value, Qkey_and_value;
Utilities
***********************************************************************/
+static void
+CHECK_HASH_TABLE (Lisp_Object x)
+{
+ CHECK_TYPE (HASH_TABLE_P (x), Qhash_table_p, x);
+}
+
+static void
+set_hash_key_and_value (struct Lisp_Hash_Table *h, Lisp_Object key_and_value)
+{
+ h->key_and_value = key_and_value;
+}
+static void
+set_hash_next (struct Lisp_Hash_Table *h, Lisp_Object next)
+{
+ h->next = next;
+}
+static void
+set_hash_next_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+{
+ gc_aset (h->next, idx, val);
+}
+static void
+set_hash_hash (struct Lisp_Hash_Table *h, Lisp_Object hash)
+{
+ h->hash = hash;
+}
+static void
+set_hash_hash_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+{
+ gc_aset (h->hash, idx, val);
+}
+static void
+set_hash_index (struct Lisp_Hash_Table *h, Lisp_Object index)
+{
+ h->index = index;
+}
+static void
+set_hash_index_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+{
+ gc_aset (h->index, idx, val);
+}
+
/* If OBJ is a Lisp hash table, return a pointer to its struct
Lisp_Hash_Table. Otherwise, signal an error. */
Low-level Functions
***********************************************************************/
+static struct hash_table_test hashtest_eq;
+struct hash_table_test hashtest_eql, hashtest_equal;
+
/* Compare KEY1 which has hash code HASH1 and KEY2 with hash code
HASH2 in hash table H using `eql'. Value is true if KEY1 and
KEY2 are the same. */
static bool
-cmpfn_eql (struct Lisp_Hash_Table *h,
- Lisp_Object key1, EMACS_UINT hash1,
- Lisp_Object key2, EMACS_UINT hash2)
+cmpfn_eql (struct hash_table_test *ht,
+ Lisp_Object key1,
+ Lisp_Object key2)
{
return (FLOATP (key1)
&& FLOATP (key2)
KEY2 are the same. */
static bool
-cmpfn_equal (struct Lisp_Hash_Table *h,
- Lisp_Object key1, EMACS_UINT hash1,
- Lisp_Object key2, EMACS_UINT hash2)
+cmpfn_equal (struct hash_table_test *ht,
+ Lisp_Object key1,
+ Lisp_Object key2)
{
- return hash1 == hash2 && !NILP (Fequal (key1, key2));
+ return !NILP (Fequal (key1, key2));
}
if KEY1 and KEY2 are the same. */
static bool
-cmpfn_user_defined (struct Lisp_Hash_Table *h,
- Lisp_Object key1, EMACS_UINT hash1,
- Lisp_Object key2, EMACS_UINT hash2)
+cmpfn_user_defined (struct hash_table_test *ht,
+ Lisp_Object key1,
+ Lisp_Object key2)
{
- if (hash1 == hash2)
- {
- Lisp_Object args[3];
+ Lisp_Object args[3];
- args[0] = h->user_cmp_function;
- args[1] = key1;
- args[2] = key2;
- return !NILP (Ffuncall (3, args));
- }
- else
- return 0;
+ args[0] = ht->user_cmp_function;
+ args[1] = key1;
+ args[2] = key2;
+ return !NILP (Ffuncall (3, args));
}
in a Lisp integer. */
static EMACS_UINT
-hashfn_eq (struct Lisp_Hash_Table *h, Lisp_Object key)
+hashfn_eq (struct hash_table_test *ht, Lisp_Object key)
{
- EMACS_UINT hash = XUINT (key) ^ XTYPE (key);
- eassert ((hash & ~INTMASK) == 0);
+ EMACS_UINT hash = XHASH (key) ^ XTYPE (key);
return hash;
}
-
/* Value is a hash code for KEY for use in hash table H which uses
`eql' to compare keys. The hash code returned is guaranteed to fit
in a Lisp integer. */
static EMACS_UINT
-hashfn_eql (struct Lisp_Hash_Table *h, Lisp_Object key)
+hashfn_eql (struct hash_table_test *ht, Lisp_Object key)
{
EMACS_UINT hash;
if (FLOATP (key))
hash = sxhash (key, 0);
else
- hash = XUINT (key) ^ XTYPE (key);
- eassert ((hash & ~INTMASK) == 0);
+ hash = XHASH (key) ^ XTYPE (key);
return hash;
}
-
/* Value is a hash code for KEY for use in hash table H which uses
`equal' to compare keys. The hash code returned is guaranteed to fit
in a Lisp integer. */
static EMACS_UINT
-hashfn_equal (struct Lisp_Hash_Table *h, Lisp_Object key)
+hashfn_equal (struct hash_table_test *ht, Lisp_Object key)
{
EMACS_UINT hash = sxhash (key, 0);
- eassert ((hash & ~INTMASK) == 0);
return hash;
}
-
/* Value is a hash code for KEY for use in hash table H which uses as
user-defined function to compare keys. The hash code returned is
guaranteed to fit in a Lisp integer. */
static EMACS_UINT
-hashfn_user_defined (struct Lisp_Hash_Table *h, Lisp_Object key)
+hashfn_user_defined (struct hash_table_test *ht, Lisp_Object key)
{
Lisp_Object args[2], hash;
- args[0] = h->user_hash_function;
+ args[0] = ht->user_hash_function;
args[1] = key;
hash = Ffuncall (2, args);
if (!INTEGERP (hash))
one of the symbols `key', `value', `key-or-value', or `key-and-value'. */
Lisp_Object
-make_hash_table (Lisp_Object test, Lisp_Object size, Lisp_Object rehash_size,
- Lisp_Object rehash_threshold, Lisp_Object weak,
- Lisp_Object user_test, Lisp_Object user_hash)
+make_hash_table (struct hash_table_test test,
+ Lisp_Object size, Lisp_Object rehash_size,
+ Lisp_Object rehash_threshold, Lisp_Object weak)
{
struct Lisp_Hash_Table *h;
Lisp_Object table;
double index_float;
/* Preconditions. */
- eassert (SYMBOLP (test));
+ eassert (SYMBOLP (test.name));
eassert (INTEGERP (size) && XINT (size) >= 0);
eassert ((INTEGERP (rehash_size) && XINT (rehash_size) > 0)
|| (FLOATP (rehash_size) && 1 < XFLOAT_DATA (rehash_size)));
/* Initialize hash table slots. */
h->test = test;
- if (EQ (test, Qeql))
- {
- h->cmpfn = cmpfn_eql;
- h->hashfn = hashfn_eql;
- }
- else if (EQ (test, Qeq))
- {
- h->cmpfn = NULL;
- h->hashfn = hashfn_eq;
- }
- else if (EQ (test, Qequal))
- {
- h->cmpfn = cmpfn_equal;
- h->hashfn = hashfn_equal;
- }
- else
- {
- h->user_cmp_function = user_test;
- h->user_hash_function = user_hash;
- h->cmpfn = cmpfn_user_defined;
- h->hashfn = hashfn_user_defined;
- }
-
h->weak = weak;
h->rehash_threshold = rehash_threshold;
h->rehash_size = rehash_size;
ptrdiff_t start_of_bucket;
Lisp_Object idx;
- hash_code = h->hashfn (h, key);
+ hash_code = h->test.hashfn (&h->test, key);
+ eassert ((hash_code & ~INTMASK) == 0);
if (hash)
*hash = hash_code;
{
ptrdiff_t i = XFASTINT (idx);
if (EQ (key, HASH_KEY (h, i))
- || (h->cmpfn
- && h->cmpfn (h, key, hash_code,
- HASH_KEY (h, i), XUINT (HASH_HASH (h, i)))))
+ || (h->test.cmpfn
+ && hash_code == XUINT (HASH_HASH (h, i))
+ && h->test.cmpfn (&h->test, key, HASH_KEY (h, i))))
break;
idx = HASH_NEXT (h, i);
}
ptrdiff_t start_of_bucket;
Lisp_Object idx, prev;
- hash_code = h->hashfn (h, key);
+ hash_code = h->test.hashfn (&h->test, key);
+ eassert ((hash_code & ~INTMASK) == 0);
start_of_bucket = hash_code % ASIZE (h->index);
idx = HASH_INDEX (h, start_of_bucket);
prev = Qnil;
ptrdiff_t i = XFASTINT (idx);
if (EQ (key, HASH_KEY (h, i))
- || (h->cmpfn
- && h->cmpfn (h, key, hash_code,
- HASH_KEY (h, i), XUINT (HASH_HASH (h, i)))))
+ || (h->test.cmpfn
+ && hash_code == XUINT (HASH_HASH (h, i))
+ && h->test.cmpfn (&h->test, key, HASH_KEY (h, i))))
{
/* Take entry out of collision chain. */
if (NILP (prev))
#define SXHASH_MAX_LEN 7
-/* Combine two integers X and Y for hashing. The result might not fit
- into a Lisp integer. */
-
-#define SXHASH_COMBINE(X, Y) \
- ((((EMACS_UINT) (X) << 4) + ((EMACS_UINT) (X) >> (BITS_PER_EMACS_INT - 4))) \
- + (EMACS_UINT) (Y))
-
-/* Hash X, returning a value that fits into a Lisp integer. */
-#define SXHASH_REDUCE(X) \
- ((((X) ^ (X) >> (BITS_PER_EMACS_INT - FIXNUM_BITS))) & INTMASK)
-
/* Return a hash for string PTR which has length LEN. The hash value
can be any EMACS_UINT value. */
while (p != end)
{
c = *p++;
- hash = SXHASH_COMBINE (hash, c);
+ hash = sxhash_combine (hash, c);
}
return hash;
/* Return a hash for the floating point value VAL. */
-static EMACS_INT
+static EMACS_UINT
sxhash_float (double val)
{
EMACS_UINT hash = 0;
u.val = val;
memset (&u.val + 1, 0, sizeof u - sizeof u.val);
for (i = 0; i < WORDS_PER_DOUBLE; i++)
- hash = SXHASH_COMBINE (hash, u.word[i]);
+ hash = sxhash_combine (hash, u.word[i]);
return SXHASH_REDUCE (hash);
}
list = XCDR (list), ++i)
{
EMACS_UINT hash2 = sxhash (XCAR (list), depth + 1);
- hash = SXHASH_COMBINE (hash, hash2);
+ hash = sxhash_combine (hash, hash2);
}
if (!NILP (list))
{
EMACS_UINT hash2 = sxhash (list, depth + 1);
- hash = SXHASH_COMBINE (hash, hash2);
+ hash = sxhash_combine (hash, hash2);
}
return SXHASH_REDUCE (hash);
for (i = 0; i < n; ++i)
{
EMACS_UINT hash2 = sxhash (AREF (vec, i), depth + 1);
- hash = SXHASH_COMBINE (hash, hash2);
+ hash = sxhash_combine (hash, hash2);
}
return SXHASH_REDUCE (hash);
n = min (SXHASH_MAX_LEN, XBOOL_VECTOR (vec)->header.size);
for (i = 0; i < n; ++i)
- hash = SXHASH_COMBINE (hash, XBOOL_VECTOR (vec)->data[i]);
+ hash = sxhash_combine (hash, XBOOL_VECTOR (vec)->data[i]);
return SXHASH_REDUCE (hash);
}
break;
case Lisp_Misc:
- hash = XUINT (obj);
+ hash = XHASH (obj);
break;
case Lisp_Symbol:
else
/* Others are `equal' if they are `eq', so let's take their
address as hash. */
- hash = XUINT (obj);
+ hash = XHASH (obj);
break;
case Lisp_Cons:
(ptrdiff_t nargs, Lisp_Object *args)
{
Lisp_Object test, size, rehash_size, rehash_threshold, weak;
- Lisp_Object user_test, user_hash;
+ struct hash_table_test testdesc;
char *used;
ptrdiff_t i;
/* See if there's a `:test TEST' among the arguments. */
i = get_key_arg (QCtest, nargs, args, used);
test = i ? args[i] : Qeql;
- if (!EQ (test, Qeq) && !EQ (test, Qeql) && !EQ (test, Qequal))
+ if (EQ (test, Qeq))
+ testdesc = hashtest_eq;
+ else if (EQ (test, Qeql))
+ testdesc = hashtest_eql;
+ else if (EQ (test, Qequal))
+ testdesc = hashtest_equal;
+ else
{
/* See if it is a user-defined test. */
Lisp_Object prop;
prop = Fget (test, Qhash_table_test);
if (!CONSP (prop) || !CONSP (XCDR (prop)))
signal_error ("Invalid hash table test", test);
- user_test = XCAR (prop);
- user_hash = XCAR (XCDR (prop));
+ testdesc.name = test;
+ testdesc.user_cmp_function = XCAR (prop);
+ testdesc.user_hash_function = XCAR (XCDR (prop));
+ testdesc.hashfn = hashfn_user_defined;
+ testdesc.cmpfn = cmpfn_user_defined;
}
- else
- user_test = user_hash = Qnil;
/* See if there's a `:size SIZE' argument. */
i = get_key_arg (QCsize, nargs, args, used);
if (!used[i])
signal_error ("Invalid argument list", args[i]);
- return make_hash_table (test, size, rehash_size, rehash_threshold, weak,
- user_test, user_hash);
+ return make_hash_table (testdesc, size, rehash_size, rehash_threshold, weak);
}
doc: /* Return the test TABLE uses. */)
(Lisp_Object table)
{
- return check_hash_table (table)->test;
+ return check_hash_table (table)->test.name;
}
DEFVAR_LISP ("features", Vfeatures,
doc: /* A list of symbols which are the features of the executing Emacs.
Used by `featurep' and `require', and altered by `provide'. */);
- Vfeatures = Fcons (intern_c_string ("emacs"), Qnil);
+ Vfeatures = list1 (intern_c_string ("emacs"));
DEFSYM (Qsubfeatures, "subfeatures");
+ DEFSYM (Qfuncall, "funcall");
#ifdef HAVE_LANGINFO_CODESET
DEFSYM (Qcodeset, "codeset");
defsubr (&Smd5);
defsubr (&Ssecure_hash);
defsubr (&Slocale_info);
+
+ hashtest_eq.name = Qeq;
+ hashtest_eq.user_hash_function = Qnil;
+ hashtest_eq.user_cmp_function = Qnil;
+ hashtest_eq.cmpfn = 0;
+ hashtest_eq.hashfn = hashfn_eq;
+
+ hashtest_eql.name = Qeql;
+ hashtest_eql.user_hash_function = Qnil;
+ hashtest_eql.user_cmp_function = Qnil;
+ hashtest_eql.cmpfn = cmpfn_eql;
+ hashtest_eql.hashfn = hashfn_eql;
+
+ hashtest_equal.name = Qequal;
+ hashtest_equal.user_hash_function = Qnil;
+ hashtest_equal.user_cmp_function = Qnil;
+ hashtest_equal.cmpfn = cmpfn_equal;
+ hashtest_equal.hashfn = hashfn_equal;
}