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Simplify PairSet

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This commit is contained in:
Behdad Esfahbod 2010-05-11 00:23:50 -04:00
parent 97e7f8f305
commit 70c9bfd564
1 changed files with 54 additions and 47 deletions
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101
src/hb-ot-layout-gpos-private.hh
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@ -546,6 +546,7 @@ struct SinglePos
struct PairValueRecord
{
friend struct PairPosFormat1;
friend struct PairSet;
private:
GlyphID secondGlyph; /* GlyphID of second glyph in the
@ -561,12 +562,50 @@ struct PairSet
{
friend struct PairPosFormat1;
/* Note: Doesn't sanitize the Device entries in the ValueRecord */
inline bool sanitize (hb_sanitize_context_t *context, unsigned int format_len) {
inline bool apply (hb_apply_context_t *context,
const ValueFormat *valueFormats,
unsigned int pos) const
{
TRACE_APPLY ();
unsigned int len1 = valueFormats[0].get_len ();
unsigned int len2 = valueFormats[1].get_len ();
unsigned int record_size = USHORT::static_size * (1 + len1 + len2);
unsigned int count = len;
const PairValueRecord *record = CastP<PairValueRecord> (array);
for (unsigned int i = 0; i < count; i++)
{
if (IN_GLYPH (pos) == record->secondGlyph)
{
valueFormats[0].apply_value (context->layout, this, &record->values[0], CURPOSITION ());
valueFormats[1].apply_value (context->layout, this, &record->values[len1], POSITION (pos));
if (len2)
pos++;
context->buffer->in_pos = pos;
return true;
}
record = &StructAtOffset<PairValueRecord> (record, record_size);
}
return false;
}
struct sanitize_closure_t {
void *base;
ValueFormat *valueFormats;
unsigned int len1; /* valueFormats[0].get_len() */
unsigned int stride; /* 1 + len1 + len2 */
};
inline bool sanitize (hb_sanitize_context_t *context, const sanitize_closure_t *closure) {
TRACE_SANITIZE ();
if (!context->check_struct (this)) return false;
unsigned int count = (1 + format_len) * len;
return context->check_array (array, USHORT::static_size, count);
if (!(context->check_struct (this)
&& context->check_array (array, USHORT::static_size * closure->stride, len))) return false;
unsigned int count = len;
PairValueRecord *record = CastP<PairValueRecord> (array);
return closure->valueFormats[0].sanitize_values_stride_unsafe (context, closure->base, &record->values[0], count, closure->stride)
&& closure->valueFormats[1].sanitize_values_stride_unsafe (context, closure->base, &record->values[closure->len1], count, closure->stride);
}
private:
@ -601,28 +640,7 @@ struct PairPosFormat1
j++;
}
unsigned int len1 = valueFormat1.get_len ();
unsigned int len2 = valueFormat2.get_len ();
unsigned int record_size = USHORT::static_size * (1 + len1 + len2);
const PairSet &pair_set = this+pairSet[index];
unsigned int count = pair_set.len;
const PairValueRecord *record = CastP<PairValueRecord> (pair_set.array);
for (unsigned int i = 0; i < count; i++)
{
if (IN_GLYPH (j) == record->secondGlyph)
{
valueFormat1.apply_value (context->layout, this, &record->values[0], CURPOSITION ());
valueFormat2.apply_value (context->layout, this, &record->values[len1], POSITION (j));
if (len2)
j++;
context->buffer->in_pos = j;
return true;
}
record = &StructAtOffset<PairValueRecord> (record, record_size);
}
return false;
return (this+pairSet[index]).apply (context, &valueFormat1, j);
}
inline bool sanitize (hb_sanitize_context_t *context) {
@ -630,27 +648,16 @@ struct PairPosFormat1
unsigned int len1 = valueFormat1.get_len ();
unsigned int len2 = valueFormat2.get_len ();
PairSet::sanitize_closure_t closure = {
this,
&valueFormat1,
len1,
1 + len1 + len2
};
if (!(context->check_struct (this)
&& coverage.sanitize (context, this)
&& pairSet.sanitize (context, this, len1 + len2))) return false;
if (!(valueFormat1.has_device () || valueFormat2.has_device ())) return true;
unsigned int stride = 1 + len1 + len2;
unsigned int count1 = pairSet.len;
for (unsigned int i = 0; i < count1; i++)
{
PairSet &pair_set = const_cast<PairSet &> (this+pairSet[i]); /* XXX clean this up */
unsigned int count2 = pair_set.len;
PairValueRecord *record = CastP<PairValueRecord> (pair_set.array);
if (!(valueFormat1.sanitize_values_stride_unsafe (context, this, &record->values[0], count2, stride) &&
valueFormat2.sanitize_values_stride_unsafe (context, this, &record->values[len1], count2, stride)))
return false;
}
return true;
return context->check_struct (this)
&& coverage.sanitize (context, this)
&& pairSet.sanitize (context, this, &closure);
}
private: