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[aat] Add enums for pre-defined state and classes 

Not sure how I didn't add before...
This commit is contained in:
Behdad Esfahbod 2018-09-14 11:31:33 +02:00
parent 67449c3933
commit 4653e6cf3c
1 changed files with 16 additions and 3 deletions
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19
src/hb-aat-layout-common.hh
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@ -439,10 +439,23 @@ struct Entry<void>
template <typename Extra>
struct StateTable
{
enum State
{
STATE_START_OF_TEXT = 0,
STATE_START_OF_LINE = 1,
};
enum Class
{
CLASS_END_OF_TEXT = 0,
CLASS_OUT_OF_BOUNDS = 1,
CLASS_DELETED_GLYPH = 2,
CLASS_END_OF_LINE = 3,
};
inline unsigned int get_class (hb_codepoint_t glyph_id, unsigned int num_glyphs) const
{
const HBUINT16 *v = (this+classTable).get_value (glyph_id, num_glyphs);
return v ? *v : 1;
return v ? *v : CLASS_OUT_OF_BOUNDS;
}
inline const Entry<Extra> *get_entries () const
@ -538,13 +551,13 @@ struct StateTableDriver
if (!c->in_place)
buffer->clear_output ();
unsigned int state = 0;
unsigned int state = StateTable<EntryData>::STATE_START_OF_TEXT;
bool last_was_dont_advance = false;
for (buffer->idx = 0;;)
{
unsigned int klass = buffer->idx < buffer->len ?
machine.get_class (info[buffer->idx].codepoint, num_glyphs) :
0 /* End of text */;
(unsigned) StateTable<EntryData>::CLASS_END_OF_TEXT;
const Entry<EntryData> *entry = machine.get_entryZ (state, klass);
if (unlikely (!entry))
break;