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[cff] Micro-optimize

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This commit is contained in:
Behdad Esfahbod 2023-06-05 13:44:00 -06:00
parent 27299e0d20
commit 1636e112c4
1 changed files with 6 additions and 12 deletions
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18
src/hb-ot-cff-common.hh
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@ -143,6 +143,7 @@ struct CFFIndex
void set_offset_at (unsigned int index, unsigned int offset)
{
assert (index <= count);
unsigned int size = offSize;
const HBUINT8 *p = offsets + size * index;
switch (size)
@ -172,15 +173,6 @@ struct CFFIndex
}
}
unsigned int length_at (unsigned int index) const
{
unsigned offset0 = offset_at (index);
unsigned offset1 = offset_at (index + 1);
if (unlikely (offset1 < offset0 || offset1 > offset_at (count)))
return 0;
return offset1 - offset0;
}
const unsigned char *data_base () const
{ return (const unsigned char *) this + min_size + offSize.static_size + offset_array_size (); }
public:
@ -189,9 +181,11 @@ struct CFFIndex
{
if (unlikely (index >= count)) return hb_ubytes_t ();
_hb_compiler_memory_r_barrier ();
unsigned length = length_at (index);
if (unlikely (!length)) return hb_ubytes_t ();
return hb_ubytes_t (data_base () + offset_at (index) - 1, length);
unsigned offset0 = offset_at (index);
unsigned offset1 = offset_at (index + 1);
if (unlikely (offset1 < offset0 || offset1 > offset_at (count)))
return hb_ubytes_t ();
return hb_ubytes_t (data_base () + offset0 - 1, offset1 - offset0);
}
unsigned int get_size () const