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-rw-r--r--thirdparty/harfbuzz/src/hb-cff2-interp-cs.hh89
1 files changed, 52 insertions, 37 deletions
diff --git a/thirdparty/harfbuzz/src/hb-cff2-interp-cs.hh b/thirdparty/harfbuzz/src/hb-cff2-interp-cs.hh
index 766183760e..d0b9e7b086 100644
--- a/thirdparty/harfbuzz/src/hb-cff2-interp-cs.hh
+++ b/thirdparty/harfbuzz/src/hb-cff2-interp-cs.hh
@@ -64,14 +64,14 @@ struct blend_arg_t : number_t
typedef interp_env_t<blend_arg_t> BlendInterpEnv;
typedef biased_subrs_t<CFF2Subrs> cff2_biased_subrs_t;
-struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
+template <typename ELEM>
+struct cff2_cs_interp_env_t : cs_interp_env_t<ELEM, CFF2Subrs>
{
template <typename ACC>
- void init (const byte_str_t &str, ACC &acc, unsigned int fd,
- const int *coords_=nullptr, unsigned int num_coords_=0)
+ cff2_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd,
+ const int *coords_=nullptr, unsigned int num_coords_=0)
+ : SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs)
{
- SUPER::init (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs);
-
coords = coords_;
num_coords = num_coords_;
varStore = acc.varStore;
@@ -100,18 +100,14 @@ struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
return OpCode_return;
}
- const blend_arg_t& eval_arg (unsigned int i)
+ const ELEM& eval_arg (unsigned int i)
{
- blend_arg_t &arg = argStack[i];
- blend_arg (arg);
- return arg;
+ return SUPER::argStack[i];
}
- const blend_arg_t& pop_arg ()
+ const ELEM& pop_arg ()
{
- blend_arg_t &arg = argStack.pop ();
- blend_arg (arg);
- return arg;
+ return SUPER::argStack.pop ();
}
void process_blend ()
@@ -122,7 +118,7 @@ struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
if (do_blend)
{
if (unlikely (!scalars.resize (region_count)))
- set_error ();
+ SUPER::set_error ();
else
varStore->varStore.get_region_scalars (get_ivs (), coords, num_coords,
&scalars[0], region_count);
@@ -133,10 +129,10 @@ struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
void process_vsindex ()
{
- unsigned int index = argStack.pop_uint ();
+ unsigned int index = SUPER::argStack.pop_uint ();
if (unlikely (seen_vsindex () || seen_blend))
{
- set_error ();
+ SUPER::set_error ();
}
else
{
@@ -151,22 +147,18 @@ struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
void set_ivs (unsigned int ivs_) { ivs = ivs_; }
bool seen_vsindex () const { return seen_vsindex_; }
- protected:
- void blend_arg (blend_arg_t &arg)
+ double blend_deltas (hb_array_t<const ELEM> deltas) const
{
- if (do_blend && arg.blending ())
+ double v = 0;
+ if (do_blend)
{
- if (likely (scalars.length == arg.deltas.length))
+ if (likely (scalars.length == deltas.length))
{
- double v = arg.to_real ();
for (unsigned int i = 0; i < scalars.length; i++)
- {
- v += (double)scalars[i] * arg.deltas[i].to_real ();
- }
- arg.set_real (v);
- arg.deltas.resize (0);
+ v += (double) scalars[i] * deltas[i].to_real ();
}
}
+ return v;
}
protected:
@@ -180,22 +172,24 @@ struct cff2_cs_interp_env_t : cs_interp_env_t<blend_arg_t, CFF2Subrs>
bool seen_vsindex_;
bool seen_blend;
- typedef cs_interp_env_t<blend_arg_t, CFF2Subrs> SUPER;
+ typedef cs_interp_env_t<ELEM, CFF2Subrs> SUPER;
};
-template <typename OPSET, typename PARAM, typename PATH=path_procs_null_t<cff2_cs_interp_env_t, PARAM>>
-struct cff2_cs_opset_t : cs_opset_t<blend_arg_t, OPSET, cff2_cs_interp_env_t, PARAM, PATH>
+template <typename OPSET, typename PARAM, typename ELEM, typename PATH=path_procs_null_t<cff2_cs_interp_env_t<ELEM>, PARAM>>
+struct cff2_cs_opset_t : cs_opset_t<ELEM, OPSET, cff2_cs_interp_env_t<ELEM>, PARAM, PATH>
{
- static void process_op (op_code_t op, cff2_cs_interp_env_t &env, PARAM& param)
+ static void process_op (op_code_t op, cff2_cs_interp_env_t<ELEM> &env, PARAM& param)
{
switch (op) {
case OpCode_callsubr:
case OpCode_callgsubr:
/* a subroutine number shouldn't be a blended value */
+#if 0
if (unlikely (env.argStack.peek ().blending ()))
{
env.set_error ();
break;
}
+#endif
SUPER::process_op (op, env, param);
break;
@@ -204,11 +198,13 @@ struct cff2_cs_opset_t : cs_opset_t<blend_arg_t, OPSET, cff2_cs_interp_env_t, PA
break;
case OpCode_vsindexcs:
+#if 0
if (unlikely (env.argStack.peek ().blending ()))
{
env.set_error ();
break;
}
+#endif
OPSET::process_vsindex (env, param);
break;
@@ -217,7 +213,26 @@ struct cff2_cs_opset_t : cs_opset_t<blend_arg_t, OPSET, cff2_cs_interp_env_t, PA
}
}
- static void process_blend (cff2_cs_interp_env_t &env, PARAM& param)
+ template <typename T = ELEM,
+ hb_enable_if (hb_is_same (T, blend_arg_t))>
+ static void process_arg_blend (cff2_cs_interp_env_t<ELEM> &env,
+ ELEM &arg,
+ const hb_array_t<const ELEM> blends,
+ unsigned n, unsigned i)
+ {
+ arg.set_blends (n, i, blends.length, blends);
+ }
+ template <typename T = ELEM,
+ hb_enable_if (!hb_is_same (T, blend_arg_t))>
+ static void process_arg_blend (cff2_cs_interp_env_t<ELEM> &env,
+ ELEM &arg,
+ const hb_array_t<const ELEM> blends,
+ unsigned n, unsigned i)
+ {
+ arg.set_real (arg.to_real () + env.blend_deltas (blends));
+ }
+
+ static void process_blend (cff2_cs_interp_env_t<ELEM> &env, PARAM& param)
{
unsigned int n, k;
@@ -234,26 +249,26 @@ struct cff2_cs_opset_t : cs_opset_t<blend_arg_t, OPSET, cff2_cs_interp_env_t, PA
}
for (unsigned int i = 0; i < n; i++)
{
- const hb_array_t<const blend_arg_t> blends = env.argStack.get_subarray (start + n + (i * k));
- env.argStack[start + i].set_blends (n, i, k, blends);
+ const hb_array_t<const ELEM> blends = env.argStack.sub_array (start + n + (i * k), k);
+ process_arg_blend (env, env.argStack[start + i], blends, n, i);
}
/* pop off blend values leaving default values now adorned with blend values */
env.argStack.pop (k * n);
}
- static void process_vsindex (cff2_cs_interp_env_t &env, PARAM& param)
+ static void process_vsindex (cff2_cs_interp_env_t<ELEM> &env, PARAM& param)
{
env.process_vsindex ();
env.clear_args ();
}
private:
- typedef cs_opset_t<blend_arg_t, OPSET, cff2_cs_interp_env_t, PARAM, PATH> SUPER;
+ typedef cs_opset_t<ELEM, OPSET, cff2_cs_interp_env_t<ELEM>, PARAM, PATH> SUPER;
};
-template <typename OPSET, typename PARAM>
-struct cff2_cs_interpreter_t : cs_interpreter_t<cff2_cs_interp_env_t, OPSET, PARAM> {};
+template <typename OPSET, typename PARAM, typename ELEM>
+using cff2_cs_interpreter_t = cs_interpreter_t<cff2_cs_interp_env_t<ELEM>, OPSET, PARAM>;
} /* namespace CFF */
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