/* chartab.c -- char-table support
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H13PRO009
XCHAR_TABLE (copy)->defalt = XCHAR_TABLE (table)->defalt;
XCHAR_TABLE (copy)->parent = XCHAR_TABLE (table)->parent;
XCHAR_TABLE (copy)->purpose = XCHAR_TABLE (table)->purpose;
- XCHAR_TABLE (copy)->ascii = XCHAR_TABLE (table)->ascii;
for (i = 0; i < chartab_size[0]; i++)
XCHAR_TABLE (copy)->contents[i]
= (SUB_CHAR_TABLE_P (XCHAR_TABLE (table)->contents[i])
? copy_sub_char_table (XCHAR_TABLE (table)->contents[i])
: XCHAR_TABLE (table)->contents[i]);
- if (SUB_CHAR_TABLE_P (XCHAR_TABLE (copy)->ascii))
- XCHAR_TABLE (copy)->ascii = char_table_ascii (copy);
+ XCHAR_TABLE (copy)->ascii = char_table_ascii (copy);
size -= VECSIZE (struct Lisp_Char_Table) - 1;
for (i = 0; i < size; i++)
XCHAR_TABLE (copy)->extras[i] = XCHAR_TABLE (table)->extras[i];
int depth = XINT (tbl->depth);
int min_char = XINT (tbl->min_char);
int max_char = min_char + chartab_chars[depth - 1] - 1;
- int index = CHARTAB_IDX (c, depth, min_char);
+ int index = CHARTAB_IDX (c, depth, min_char), idx;
Lisp_Object val;
val = tbl->contents[index];
- *from = min_char + index * chartab_chars[depth];
- *to = *from + chartab_chars[depth] - 1;
if (SUB_CHAR_TABLE_P (val))
val = sub_char_table_ref_and_range (val, c, from, to, defalt);
else if (NILP (val))
val = defalt;
- while (*from > min_char
- && *from == min_char + index * chartab_chars[depth])
+ idx = index;
+ while (idx > 0 && *from < min_char + idx * chartab_chars[depth])
{
Lisp_Object this_val;
- int this_from = *from - chartab_chars[depth];
- int this_to = *from - 1;
- index--;
- this_val = tbl->contents[index];
+ c = min_char + idx * chartab_chars[depth] - 1;
+ idx--;
+ this_val = tbl->contents[idx];
if (SUB_CHAR_TABLE_P (this_val))
- this_val = sub_char_table_ref_and_range (this_val, this_to,
- &this_from, &this_to,
- defalt);
+ this_val = sub_char_table_ref_and_range (this_val, c, from, to, defalt);
else if (NILP (this_val))
this_val = defalt;
if (! EQ (this_val, val))
- break;
- *from = this_from;
+ {
+ *from = c + 1;
+ break;
+ }
}
- index = CHARTAB_IDX (c, depth, min_char);
- while (*to < max_char
- && *to == min_char + (index + 1) * chartab_chars[depth] - 1)
+ while ((c = min_char + (index + 1) * chartab_chars[depth]) < max_char
+ && *to >= c)
{
Lisp_Object this_val;
- int this_from = *to + 1;
- int this_to = this_from + chartab_chars[depth] - 1;
index++;
this_val = tbl->contents[index];
if (SUB_CHAR_TABLE_P (this_val))
- this_val = sub_char_table_ref_and_range (this_val, this_from,
- &this_from, &this_to,
- defalt);
+ this_val = sub_char_table_ref_and_range (this_val, c, from, to, defalt);
else if (NILP (this_val))
this_val = defalt;
if (! EQ (this_val, val))
- break;
- *to = this_to;
+ {
+ *to = c - 1;
+ break;
+ }
}
return val;
}
-/* Return the value for C in char-table TABLE. Set *FROM and *TO to
- the range of characters (containing C) that have the same value as
- C. It is not assured that the value of (*FROM - 1) and (*TO + 1)
- is different from that of C. */
+/* Return the value for C in char-table TABLE. Shrink the range *FROM
+ and *TO to cover characters (containing C) that have the same value
+ as C. It is not assured that the values of (*FROM - 1) and (*TO +
+ 1) are different from that of C. */
Lisp_Object
char_table_ref_and_range (table, c, from, to)
int *from, *to;
{
struct Lisp_Char_Table *tbl = XCHAR_TABLE (table);
- int index = CHARTAB_IDX (c, 0, 0);
+ int index = CHARTAB_IDX (c, 0, 0), idx;
Lisp_Object val;
val = tbl->contents[index];
- *from = index * chartab_chars[0];
- *to = *from + chartab_chars[0] - 1;
+ if (*from < 0)
+ *from = 0;
+ if (*to < 0)
+ *to = MAX_CHAR;
if (SUB_CHAR_TABLE_P (val))
val = sub_char_table_ref_and_range (val, c, from, to, tbl->defalt);
else if (NILP (val))
val = tbl->defalt;
- while (*from > 0 && *from == index * chartab_chars[0])
+ idx = index;
+ while (*from < idx * chartab_chars[0])
{
Lisp_Object this_val;
- int this_from = *from - chartab_chars[0];
- int this_to = *from - 1;
- index--;
- this_val = tbl->contents[index];
+ c = idx * chartab_chars[0] - 1;
+ idx--;
+ this_val = tbl->contents[idx];
if (SUB_CHAR_TABLE_P (this_val))
- this_val = sub_char_table_ref_and_range (this_val, this_to,
- &this_from, &this_to,
+ this_val = sub_char_table_ref_and_range (this_val, c, from, to,
tbl->defalt);
else if (NILP (this_val))
this_val = tbl->defalt;
if (! EQ (this_val, val))
- break;
- *from = this_from;
+ {
+ *from = c + 1;
+ break;
+ }
}
- while (*to < MAX_CHAR && *to == (index + 1) * chartab_chars[0] - 1)
+ while (*to >= (index + 1) * chartab_chars[0])
{
Lisp_Object this_val;
- int this_from = *to + 1;
- int this_to = this_from + chartab_chars[0] - 1;
index++;
+ c = index * chartab_chars[0];
this_val = tbl->contents[index];
if (SUB_CHAR_TABLE_P (this_val))
- this_val = sub_char_table_ref_and_range (this_val, this_from,
- &this_from, &this_to,
+ this_val = sub_char_table_ref_and_range (this_val, c, from, to,
tbl->defalt);
else if (NILP (this_val))
this_val = tbl->defalt;
if (! EQ (this_val, val))
- break;
- *to = this_to;
+ {
+ *to = c - 1;
+ break;
+ }
}
return val;
}
static Lisp_Object
-optimize_sub_char_table (table)
- Lisp_Object table;
+optimize_sub_char_table (table, test)
+ Lisp_Object table, test;
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT (tbl->depth);
Lisp_Object elt, this;
- int i;
+ int i, optimizable;
elt = XSUB_CHAR_TABLE (table)->contents[0];
if (SUB_CHAR_TABLE_P (elt))
- elt = XSUB_CHAR_TABLE (table)->contents[0] = optimize_sub_char_table (elt);
- if (SUB_CHAR_TABLE_P (elt))
- return table;
+ elt = XSUB_CHAR_TABLE (table)->contents[0]
+ = optimize_sub_char_table (elt, test);
+ optimizable = SUB_CHAR_TABLE_P (elt) ? 0 : 1;
for (i = 1; i < chartab_size[depth]; i++)
{
this = XSUB_CHAR_TABLE (table)->contents[i];
if (SUB_CHAR_TABLE_P (this))
this = XSUB_CHAR_TABLE (table)->contents[i]
- = optimize_sub_char_table (this);
- if (SUB_CHAR_TABLE_P (this)
- || NILP (Fequal (this, elt)))
- break;
+ = optimize_sub_char_table (this, test);
+ if (optimizable
+ && (NILP (test) ? NILP (Fequal (this, elt)) /* defaults to `equal'. */
+ : EQ (test, Qeq) ? !EQ (this, elt) /* Optimize `eq' case. */
+ : NILP (call2 (test, this, elt))))
+ optimizable = 0;
}
- return (i < chartab_size[depth] ? table : elt);
+ return (optimizable ? elt : table);
}
DEFUN ("optimize-char-table", Foptimize_char_table, Soptimize_char_table,
- 1, 1, 0,
- doc: /* Optimize CHAR-TABLE. */)
- (char_table)
- Lisp_Object char_table;
+ 1, 2, 0,
+ doc: /* Optimize CHAR-TABLE.
+TEST is the comparison function used to decide whether two entries are
+equivalent and can be merged. It defaults to `equal'. */)
+ (char_table, test)
+ Lisp_Object char_table, test;
{
Lisp_Object elt;
int i;
{
elt = XCHAR_TABLE (char_table)->contents[i];
if (SUB_CHAR_TABLE_P (elt))
- XCHAR_TABLE (char_table)->contents[i] = optimize_sub_char_table (elt);
+ XCHAR_TABLE (char_table)->contents[i]
+ = optimize_sub_char_table (elt, test);
}
+ /* Reset the `ascii' cache, in case it got optimized away. */
+ XCHAR_TABLE (char_table)->ascii = char_table_ascii (char_table);
+
return Qnil;
}
{
if (NILP (this))
this = default_val;
- if (NILP (Fequal (val, this)))
+ if (!EQ (val, this))
{
int different_value = 1;
parent, arg, val, range,
XCHAR_TABLE (parent)->defalt,
XCHAR_TABLE (parent)->parent);
- if (! NILP (Fequal (val, this)))
+ if (EQ (val, this))
different_value = 0;
}
}
Lisp_Object function, table, arg;
{
Lisp_Object range, val;
- int c, i;
struct gcpro gcpro1, gcpro2, gcpro3;
range = Fcons (make_number (0), make_number (MAX_CHAR));
}
+/* Support function for `map-charset-chars'. Map C_FUNCTION or
+ FUNCTION over TABLE, calling it for each character or a group of
+ succeeding characters that have non-nil value in TABLE. TABLE is a
+ "mapping table" or a "deunifier table" of a certain charset.
+
+ If CHARSET is not NULL (this is the case that `map-charset-chars'
+ is called with non-nil FROM-CODE and TO-CODE), it is a charset who
+ owns TABLE, and the function is called only on a character in the
+ range FROM and TO. FROM and TO are not character codes, but code
+ points of a character in CHARSET.
+
+ This function is called in these two cases:
+
+ (1) A charset has a mapping file name in :map property.
+
+ (2) A charset has an upper code space in :offset property and a
+ mapping file name in :unify-map property. In this case, this
+ function is called only for characters in the Unicode code space.
+ Characters in upper code space are handled directly in
+ map_charset_chars. */
+
void
map_char_table_for_charset (c_function, function, table, arg,
charset, from, to)