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[subset-cff] Add has_calls to parsed charstrings 

Optimize closure based on it.
This commit is contained in:
Behdad Esfahbod 2022-11-26 17:49:21 -07:00
parent 6d53074e63
commit 46ab15137b
1 changed files with 13 additions and 4 deletions
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17
src/hb-subset-cff-common.hh
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@ -340,6 +340,7 @@ struct parsed_cs_str_t : parsed_values_t<parsed_cs_op_t>
parsed = false;
hint_dropped = false;
has_prefix_ = false;
has_calls_ = false;
}
void add_op (op_code_t op, const byte_str_ref_t& str_ref)
@ -352,6 +353,8 @@ struct parsed_cs_str_t : parsed_values_t<parsed_cs_op_t>
{
if (!is_parsed ())
{
has_calls_ = true;
unsigned int parsed_len = get_count ();
if (likely (parsed_len > 0))
values[parsed_len-1].set_skip ();
@ -388,11 +391,14 @@ struct parsed_cs_str_t : parsed_values_t<parsed_cs_op_t>
op_code_t prefix_op () const { return prefix_op_; }
const number_t &prefix_num () const { return prefix_num_; }
bool has_calls () const { return has_calls_; }
protected:
bool parsed;
bool hint_dropped;
bool vsindex_dropped;
bool has_prefix_;
bool parsed : 1;
bool hint_dropped : 1;
bool vsindex_dropped : 1;
bool has_prefix_ : 1;
bool has_calls_ : 1;
op_code_t prefix_op_;
number_t prefix_num_;
@ -967,6 +973,9 @@ struct subr_subsetter_t
void collect_subr_refs_in_str (const parsed_cs_str_t &str, const subr_subset_param_t &param)
{
if (!str.has_calls ())
return;
auto *value = str.values.arrayZ;
auto *end = value + str.values.length;
for (; value < end; value++)