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This commit is contained in:
Behdad Esfahbod 2011-07-29 17:02:48 -04:00
parent 743807a3ce
commit 8f0b64fb69
2 changed files with 9 additions and 5 deletions
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6
src/hb-ot-shape-complex-arabic.cc
View File

@ -61,21 +61,21 @@ static unsigned int get_joining_type (hb_codepoint_t u, hb_unicode_general_categ
{
/* TODO Macroize the magic bit operations */
if (likely (hb_codepoint_in_range (u, JOINING_TABLE_FIRST, JOINING_TABLE_LAST))) {
if (likely (hb_in_range<hb_codepoint_t> (u, JOINING_TABLE_FIRST, JOINING_TABLE_LAST))) {
unsigned int j_type = joining_table[u - JOINING_TABLE_FIRST];
if (likely (j_type != JOINING_TYPE_X))
return j_type;
}
/* Mongolian joining data is not in ArabicJoining.txt yet */
if (unlikely (hb_codepoint_in_range (u, 0x1800, 0x18AF)))
if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x1800, 0x18AF)))
{
/* All letters, SIBE SYLLABLE BOUNDARY MARKER, and NIRUGU are D */
if (gen_cat == HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER || u == 0x1807 || u == 0x180A)
return JOINING_TYPE_D;
}
if (unlikely (hb_codepoint_in_range (u, 0x200C, 0x200D))) {
if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x200C, 0x200D))) {
return u == 0x200C ? JOINING_TYPE_U : JOINING_TYPE_C;
}

8
src/hb-private.hh
View File

@ -573,13 +573,14 @@ HB_BEGIN_DECLS
/* Misc */
HB_END_DECLS
/* Pre-mature optimization:
* Checks for lo <= u <= hi but with an optimization if lo and hi
* are only different in a contiguous set of lower-most bits.
*/
static inline bool
hb_codepoint_in_range (hb_codepoint_t u, hb_codepoint_t lo, hb_codepoint_t hi)
template <typename T> inline bool
hb_in_range (T u, T lo, T hi)
{
if ( ((lo^hi) & lo) == 0 &&
((lo^hi) & hi) == (lo^hi) &&
@ -589,10 +590,13 @@ hb_codepoint_in_range (hb_codepoint_t u, hb_codepoint_t lo, hb_codepoint_t hi)
return lo <= u && u <= hi;
}
HB_BEGIN_DECLS
/* Useful for set-operations on small enums */
#define FLAG(x) (1<<(x))
HB_END_DECLS
#endif /* HB_PRIVATE_HH */