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Merge buffer->out_pos and buffer->out_length

This commit is contained in:
Behdad Esfahbod 2010-05-14 21:58:22 -04:00
parent 22f668eb9a
commit 8e6b6bb293
4 changed files with 24 additions and 33 deletions
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1
src/hb-buffer-private.hh
View File

@ -113,7 +113,6 @@ struct _hb_buffer_t {
unsigned int in_length;
unsigned int out_length;
unsigned int in_pos;
unsigned int out_pos; /* out_length and out_pos are actually always the same */
hb_internal_glyph_info_t *in_string;
hb_internal_glyph_info_t *out_string;

48
src/hb-buffer.cc
View File

@ -184,7 +184,6 @@ hb_buffer_clear (hb_buffer_t *buffer)
buffer->in_length = 0;
buffer->out_length = 0;
buffer->in_pos = 0;
buffer->out_pos = 0;
buffer->out_string = buffer->in_string;
buffer->max_lig_id = 0;
}
@ -247,7 +246,6 @@ _hb_buffer_clear_output (hb_buffer_t *buffer)
buffer->have_output = TRUE;
buffer->have_positions = FALSE;
buffer->out_length = 0;
buffer->out_pos = 0;
buffer->out_string = buffer->in_string;
}
@ -287,9 +285,7 @@ _hb_buffer_swap (hb_buffer_t *buffer)
buffer->in_length = buffer->out_length;
buffer->out_length = tmp;
tmp = buffer->in_pos;
buffer->in_pos = buffer->out_pos;
buffer->out_pos = tmp;
buffer->in_pos = 0;
}
/* The following function copies `num_out' elements from `glyph_data'
@ -325,9 +321,9 @@ _hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
unsigned int cluster;
if (buffer->out_string != buffer->in_string ||
buffer->out_pos + num_out > buffer->in_pos + num_in)
buffer->out_length + num_out > buffer->in_pos + num_in)
{
hb_buffer_ensure_separate (buffer, buffer->out_pos + num_out);
hb_buffer_ensure_separate (buffer, buffer->out_length + num_out);
}
mask = buffer->in_string[buffer->in_pos].mask;
@ -339,7 +335,7 @@ _hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
for (i = 0; i < num_out; i++)
{
hb_internal_glyph_info_t *info = &buffer->out_string[buffer->out_pos + i];
hb_internal_glyph_info_t *info = &buffer->out_string[buffer->out_length + i];
info->codepoint = glyph_data[i];
info->mask = mask;
info->cluster = cluster;
@ -349,8 +345,7 @@ _hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
}
buffer->in_pos += num_in;
buffer->out_pos += num_out;
buffer->out_length = buffer->out_pos;
buffer->out_length += num_out;
}
void
@ -366,9 +361,9 @@ _hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
unsigned int cluster;
if (buffer->out_string != buffer->in_string ||
buffer->out_pos + num_out > buffer->in_pos + num_in)
buffer->out_length + num_out > buffer->in_pos + num_in)
{
hb_buffer_ensure_separate (buffer, buffer->out_pos + num_out);
hb_buffer_ensure_separate (buffer, buffer->out_length + num_out);
}
mask = buffer->in_string[buffer->in_pos].mask;
@ -380,7 +375,7 @@ _hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
for (i = 0; i < num_out; i++)
{
hb_internal_glyph_info_t *info = &buffer->out_string[buffer->out_pos + i];
hb_internal_glyph_info_t *info = &buffer->out_string[buffer->out_length + i];
info->codepoint = hb_be_uint16 (glyph_data_be[i]);
info->mask = mask;
info->cluster = cluster;
@ -390,8 +385,7 @@ _hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
}
buffer->in_pos += num_in;
buffer->out_pos += num_out;
buffer->out_length = buffer->out_pos;
buffer->out_length += num_out;
}
void
@ -404,13 +398,13 @@ _hb_buffer_add_output_glyph (hb_buffer_t *buffer,
if (buffer->out_string != buffer->in_string)
{
hb_buffer_ensure (buffer, buffer->out_pos + 1);
buffer->out_string[buffer->out_pos] = buffer->in_string[buffer->in_pos];
hb_buffer_ensure (buffer, buffer->out_length + 1);
buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
}
else if (buffer->out_pos != buffer->in_pos)
buffer->out_string[buffer->out_pos] = buffer->in_string[buffer->in_pos];
else if (buffer->out_length != buffer->in_pos)
buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
info = &buffer->out_string[buffer->out_pos];
info = &buffer->out_string[buffer->out_length];
info->codepoint = glyph_index;
if (component != 0xFFFF)
info->component = component;
@ -419,8 +413,7 @@ _hb_buffer_add_output_glyph (hb_buffer_t *buffer,
info->gproperty = HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN;
buffer->in_pos++;
buffer->out_pos++;
buffer->out_length = buffer->out_pos;
buffer->out_length++;
}
void
@ -430,14 +423,13 @@ _hb_buffer_next_glyph (hb_buffer_t *buffer)
{
if (buffer->out_string != buffer->in_string)
{
hb_buffer_ensure (buffer, buffer->out_pos + 1);
buffer->out_string[buffer->out_pos] = buffer->in_string[buffer->in_pos];
hb_buffer_ensure (buffer, buffer->out_length + 1);
buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
}
else if (buffer->out_pos != buffer->in_pos)
buffer->out_string[buffer->out_pos] = buffer->in_string[buffer->in_pos];
else if (buffer->out_length != buffer->in_pos)
buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
buffer->out_pos++;
buffer->out_length = buffer->out_pos;
buffer->out_length++;
}
buffer->in_pos++;

2
src/hb-ot-layout-gsub-private.hh
View File

@ -289,7 +289,7 @@ struct AlternateSubstFormat1
/* XXX callback to user to choose alternate
if (c->layout->face->altfunc)
alt_index = (c->layout->face->altfunc)(c->layout->layout, c->buffer,
c->buffer->out_pos, glyph_id,
c->buffer->out_length, glyph_id,
alt_set.len, alt_set.array);
*/

6
src/hb-ot-layout-gsubgpos-private.hh
View File

@ -116,10 +116,10 @@ static inline bool match_backtrack (hb_apply_context_t *c,
match_func_t match_func,
const void *match_data)
{
if (unlikely (c->buffer->out_pos < count))
if (unlikely (c->buffer->out_length < count))
return false;
for (unsigned int i = 0, j = c->buffer->out_pos - 1; i < count; i++, j--)
for (unsigned int i = 0, j = c->buffer->out_length - 1; i < count; i++, j--)
{
while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->out_string[j], c->lookup_flag, NULL))
{
@ -519,7 +519,7 @@ static inline bool chain_context_lookup (hb_apply_context_t *c,
ChainContextLookupContext &lookup_context)
{
/* First guess */
if (unlikely (c->buffer->out_pos < backtrackCount ||
if (unlikely (c->buffer->out_length < backtrackCount ||
c->buffer->in_pos + inputCount + lookaheadCount > c->buffer->in_length ||
inputCount + lookaheadCount > c->context_length))
return false;