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[OTLayout] Implement ChainContext collect_glyphs() 

All of collect_glyphs() complete and untested now.
This commit is contained in:
Behdad Esfahbod 2012-11-24 01:55:34 -05:00
parent cdd756b9f4
commit f1b12781d2
1 changed files with 96 additions and 7 deletions
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103
src/hb-ot-layout-gsubgpos-private.hh
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@ -534,13 +534,14 @@ static inline void collect_coverage (hb_set_t *glyphs, const USHORT &value, cons
(data+coverage).add_coverage (glyphs);
}
static inline void collect_array (hb_collect_glyphs_context_t *c,
hb_set_t *glyphs,
unsigned int count,
const USHORT values[],
collect_glyphs_func_t collect_func,
const void *collect_data)
{
for (unsigned int i = 0; i < count; i++)
collect_func (&c->input, values[i], collect_data);
collect_func (glyphs, values[i], collect_data);
}
@ -912,7 +913,7 @@ static inline void context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c
const LookupRecord lookupRecord[],
ContextCollectGlyphsLookupContext &lookup_context)
{
collect_array (c,
collect_array (c, &c->input,
inputCount ? inputCount - 1 : 0, input,
lookup_context.funcs.collect, lookup_context.collect_data);
recurse_lookups (c,
@ -1093,7 +1094,7 @@ struct ContextFormat1
unsigned int count = ruleSet.len;
for (unsigned int i = 0; i < count; i++)
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c) const
@ -1181,7 +1182,7 @@ struct ContextFormat2
unsigned int count = ruleSet.len;
for (unsigned int i = 0; i < count; i++)
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c) const
@ -1375,6 +1376,12 @@ struct ChainContextClosureLookupContext
const void *intersects_data[3];
};
struct ChainContextCollectGlyphsLookupContext
{
ContextCollectGlyphsFuncs funcs;
const void *collect_data[3];
};
struct ChainContextApplyLookupContext
{
ContextApplyFuncs funcs;
@ -1405,6 +1412,30 @@ static inline void chain_context_closure_lookup (hb_closure_context_t *c,
lookupCount, lookupRecord);
}
static inline void chain_context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c,
unsigned int backtrackCount,
const USHORT backtrack[],
unsigned int inputCount, /* Including the first glyph (not matched) */
const USHORT input[], /* Array of input values--start with second glyph */
unsigned int lookaheadCount,
const USHORT lookahead[],
unsigned int lookupCount,
const LookupRecord lookupRecord[],
ChainContextCollectGlyphsLookupContext &lookup_context)
{
collect_array (c, &c->before,
backtrackCount, backtrack,
lookup_context.funcs.collect, lookup_context.collect_data[0]);
collect_array (c, &c->input,
inputCount ? inputCount - 1 : 0, input,
lookup_context.funcs.collect, lookup_context.collect_data[1]);
collect_array (c, &c->after,
lookaheadCount, lookahead,
lookup_context.funcs.collect, lookup_context.collect_data[2]);
recurse_lookups (c,
lookupCount, lookupRecord);
}
static inline bool chain_context_would_apply_lookup (hb_would_apply_context_t *c,
unsigned int backtrackCount,
const USHORT backtrack[],
@ -1466,6 +1497,20 @@ struct ChainRule
lookup_context);
}
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ChainContextCollectGlyphsLookupContext &lookup_context) const
{
TRACE_COLLECT_GLYPHS (this);
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack);
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input);
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
chain_context_collect_glyphs_lookup (c,
backtrack.len, backtrack.array,
input.len, input.array,
lookahead.len, lookahead.array,
lookup.len, lookup.array,
lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const
{
TRACE_WOULD_APPLY (this);
@ -1531,6 +1576,14 @@ struct ChainRuleSet
(this+rule[i]).closure (c, lookup_context);
}
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ChainContextCollectGlyphsLookupContext &lookup_context) const
{
TRACE_COLLECT_GLYPHS (this);
unsigned int num_rules = rule.len;
for (unsigned int i = 0; i < num_rules; i++)
(this+rule[i]).collect_glyphs (c, lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const
{
TRACE_WOULD_APPLY (this);
@ -1588,7 +1641,17 @@ struct ChainContextFormat1
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const
{
/* XXXXXXXXXX */
TRACE_COLLECT_GLYPHS (this);
(this+coverage).add_coverage (&c->input);
struct ChainContextCollectGlyphsLookupContext lookup_context = {
{collect_glyph},
{NULL, NULL, NULL}
};
unsigned int count = ruleSet.len;
for (unsigned int i = 0; i < count; i++)
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c) const
@ -1668,7 +1731,17 @@ struct ChainContextFormat2
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const
{
/* XXXXXXXXXX */
TRACE_COLLECT_GLYPHS (this);
(this+coverage).add_coverage (&c->input);
struct ChainContextCollectGlyphsLookupContext lookup_context = {
{collect_class},
{NULL, NULL, NULL}
};
unsigned int count = ruleSet.len;
for (unsigned int i = 0; i < count; i++)
(this+ruleSet[i]).collect_glyphs (c, lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c) const
@ -1769,7 +1842,23 @@ struct ChainContextFormat3
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const
{
/* XXXXXXXXXX */
TRACE_COLLECT_GLYPHS (this);
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack);
(this+input[0]).add_coverage (&c->input);
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input);
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
struct ChainContextCollectGlyphsLookupContext lookup_context = {
{collect_coverage},
{this, this, this}
};
chain_context_collect_glyphs_lookup (c,
backtrack.len, (const USHORT *) backtrack.array,
input.len, (const USHORT *) input.array + 1,
lookahead.len, (const USHORT *) lookahead.array,
lookup.len, lookup.array,
lookup_context);
}
inline bool would_apply (hb_would_apply_context_t *c) const