diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-open-type.hh')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-open-type.hh | 60 |
1 files changed, 36 insertions, 24 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-open-type.hh b/src/3rdparty/harfbuzz-ng/src/hb-open-type.hh index d3fdd1caf5..6967bca3d4 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-open-type.hh +++ b/src/3rdparty/harfbuzz-ng/src/hb-open-type.hh @@ -309,7 +309,7 @@ struct _hb_has_null<Type, true> static Type *get_crap () { return &Crap (Type); } }; -template <typename Type, typename OffsetType, bool has_null=true> +template <typename Type, typename OffsetType, typename BaseType=void, bool has_null=true> struct OffsetTo : Offset<OffsetType, has_null> { using target_t = Type; @@ -335,22 +335,22 @@ struct OffsetTo : Offset<OffsetType, has_null> } template <typename Base, - hb_enable_if (hb_is_convertible (const Base, const void *))> + hb_enable_if (hb_is_convertible (const Base, const BaseType *))> friend const Type& operator + (const Base &base, const OffsetTo &offset) { return offset ((const void *) base); } template <typename Base, - hb_enable_if (hb_is_convertible (const Base, const void *))> + hb_enable_if (hb_is_convertible (const Base, const BaseType *))> friend const Type& operator + (const OffsetTo &offset, const Base &base) { return offset ((const void *) base); } template <typename Base, - hb_enable_if (hb_is_convertible (Base, void *))> + hb_enable_if (hb_is_convertible (Base, BaseType *))> friend Type& operator + (Base &&base, OffsetTo &offset) { return offset ((void *) base); } template <typename Base, - hb_enable_if (hb_is_convertible (Base, void *))> + hb_enable_if (hb_is_convertible (Base, BaseType *))> friend Type& operator + (OffsetTo &offset, Base &&base) { return offset ((void *) base); } - template <typename ...Ts> + template <typename Base, typename ...Ts> bool serialize_subset (hb_subset_context_t *c, const OffsetTo& src, - const void *src_base, Ts&&... ds) + const Base *src_base, Ts&&... ds) { *this = 0; if (src.is_null ()) @@ -414,10 +414,11 @@ struct OffsetTo : Offset<OffsetType, has_null> const void *src_base, unsigned dst_bias = 0) { return serialize_copy (c, src, src_base, dst_bias, hb_serialize_context_t::Head); } - bool sanitize_shallow (hb_sanitize_context_t *c, const void *base) const + bool sanitize_shallow (hb_sanitize_context_t *c, const BaseType *base) const { TRACE_SANITIZE (this); if (unlikely (!c->check_struct (this))) return_trace (false); + hb_barrier (); //if (unlikely (this->is_null ())) return_trace (true); if (unlikely ((const char *) base + (unsigned) *this < (const char *) base)) return_trace (false); return_trace (true); @@ -427,10 +428,11 @@ struct OffsetTo : Offset<OffsetType, has_null> #ifndef HB_OPTIMIZE_SIZE HB_ALWAYS_INLINE #endif - bool sanitize (hb_sanitize_context_t *c, const void *base, Ts&&... ds) const + bool sanitize (hb_sanitize_context_t *c, const BaseType *base, Ts&&... ds) const { TRACE_SANITIZE (this); return_trace (sanitize_shallow (c, base) && + hb_barrier () && (this->is_null () || c->dispatch (StructAtOffset<Type> (base, *this), std::forward<Ts> (ds)...) || neuter (c))); @@ -445,14 +447,14 @@ struct OffsetTo : Offset<OffsetType, has_null> DEFINE_SIZE_STATIC (sizeof (OffsetType)); }; /* Partial specializations. */ -template <typename Type, bool has_null=true> using Offset16To = OffsetTo<Type, HBUINT16, has_null>; -template <typename Type, bool has_null=true> using Offset24To = OffsetTo<Type, HBUINT24, has_null>; -template <typename Type, bool has_null=true> using Offset32To = OffsetTo<Type, HBUINT32, has_null>; +template <typename Type, typename BaseType=void, bool has_null=true> using Offset16To = OffsetTo<Type, HBUINT16, BaseType, has_null>; +template <typename Type, typename BaseType=void, bool has_null=true> using Offset24To = OffsetTo<Type, HBUINT24, BaseType, has_null>; +template <typename Type, typename BaseType=void, bool has_null=true> using Offset32To = OffsetTo<Type, HBUINT32, BaseType, has_null>; -template <typename Type, typename OffsetType> using NNOffsetTo = OffsetTo<Type, OffsetType, false>; -template <typename Type> using NNOffset16To = Offset16To<Type, false>; -template <typename Type> using NNOffset24To = Offset24To<Type, false>; -template <typename Type> using NNOffset32To = Offset32To<Type, false>; +template <typename Type, typename OffsetType, typename BaseType=void> using NNOffsetTo = OffsetTo<Type, OffsetType, BaseType, false>; +template <typename Type, typename BaseType=void> using NNOffset16To = Offset16To<Type, BaseType, false>; +template <typename Type, typename BaseType=void> using NNOffset24To = Offset24To<Type, BaseType, false>; +template <typename Type, typename BaseType=void> using NNOffset32To = Offset32To<Type, BaseType, false>; /* @@ -536,6 +538,7 @@ struct UnsizedArrayOf TRACE_SANITIZE (this); if (unlikely (!sanitize_shallow (c, count))) return_trace (false); if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + hb_barrier (); for (unsigned int i = 0; i < count; i++) if (unlikely (!c->dispatch (arrayZ[i], std::forward<Ts> (ds)...))) return_trace (false); @@ -555,17 +558,17 @@ struct UnsizedArrayOf }; /* Unsized array of offset's */ -template <typename Type, typename OffsetType, bool has_null=true> -using UnsizedArray16OfOffsetTo = UnsizedArrayOf<OffsetTo<Type, OffsetType, has_null>>; +template <typename Type, typename OffsetType, typename BaseType=void, bool has_null=true> +using UnsizedArray16OfOffsetTo = UnsizedArrayOf<OffsetTo<Type, OffsetType, BaseType, has_null>>; /* Unsized array of offsets relative to the beginning of the array itself. */ -template <typename Type, typename OffsetType, bool has_null=true> -struct UnsizedListOfOffset16To : UnsizedArray16OfOffsetTo<Type, OffsetType, has_null> +template <typename Type, typename OffsetType, typename BaseType=void, bool has_null=true> +struct UnsizedListOfOffset16To : UnsizedArray16OfOffsetTo<Type, OffsetType, BaseType, has_null> { const Type& operator [] (int i_) const { unsigned int i = (unsigned int) i_; - const OffsetTo<Type, OffsetType, has_null> *p = &this->arrayZ[i]; + const OffsetTo<Type, OffsetType, BaseType, has_null> *p = &this->arrayZ[i]; if (unlikely ((const void *) p < (const void *) this->arrayZ)) return Null (Type); /* Overflowed. */ _hb_compiler_memory_r_barrier (); return this+*p; @@ -573,7 +576,7 @@ struct UnsizedListOfOffset16To : UnsizedArray16OfOffsetTo<Type, OffsetType, has_ Type& operator [] (int i_) { unsigned int i = (unsigned int) i_; - const OffsetTo<Type, OffsetType, has_null> *p = &this->arrayZ[i]; + const OffsetTo<Type, OffsetType, BaseType, has_null> *p = &this->arrayZ[i]; if (unlikely ((const void *) p < (const void *) this->arrayZ)) return Crap (Type); /* Overflowed. */ _hb_compiler_memory_r_barrier (); return this+*p; @@ -583,7 +586,7 @@ struct UnsizedListOfOffset16To : UnsizedArray16OfOffsetTo<Type, OffsetType, has_ bool sanitize (hb_sanitize_context_t *c, unsigned int count, Ts&&... ds) const { TRACE_SANITIZE (this); - return_trace ((UnsizedArray16OfOffsetTo<Type, OffsetType, has_null> + return_trace ((UnsizedArray16OfOffsetTo<Type, OffsetType, BaseType, has_null> ::sanitize (c, count, this, std::forward<Ts> (ds)...))); } }; @@ -725,6 +728,7 @@ struct ArrayOf TRACE_SANITIZE (this); if (unlikely (!sanitize_shallow (c))) return_trace (false); if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + hb_barrier (); unsigned int count = len; for (unsigned int i = 0; i < count; i++) if (unlikely (!c->dispatch (arrayZ[i], std::forward<Ts> (ds)...))) @@ -735,7 +739,9 @@ struct ArrayOf bool sanitize_shallow (hb_sanitize_context_t *c) const { TRACE_SANITIZE (this); - return_trace (len.sanitize (c) && c->check_array_sized (arrayZ, len, sizeof (LenType))); + return_trace (len.sanitize (c) && + hb_barrier () && + c->check_array_sized (arrayZ, len, sizeof (LenType))); } public: @@ -866,6 +872,7 @@ struct HeadlessArrayOf TRACE_SANITIZE (this); if (unlikely (!sanitize_shallow (c))) return_trace (false); if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + hb_barrier (); unsigned int count = get_length (); for (unsigned int i = 0; i < count; i++) if (unlikely (!c->dispatch (arrayZ[i], std::forward<Ts> (ds)...))) @@ -878,6 +885,7 @@ struct HeadlessArrayOf { TRACE_SANITIZE (this); return_trace (lenP1.sanitize (c) && + hb_barrier () && (!lenP1 || c->check_array_sized (arrayZ, lenP1 - 1, sizeof (LenType)))); } @@ -919,6 +927,7 @@ struct ArrayOfM1 TRACE_SANITIZE (this); if (unlikely (!sanitize_shallow (c))) return_trace (false); if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + hb_barrier (); unsigned int count = lenM1 + 1; for (unsigned int i = 0; i < count; i++) if (unlikely (!c->dispatch (arrayZ[i], std::forward<Ts> (ds)...))) @@ -931,6 +940,7 @@ struct ArrayOfM1 { TRACE_SANITIZE (this); return_trace (lenM1.sanitize (c) && + hb_barrier () && (c->check_array_sized (arrayZ, lenM1 + 1, sizeof (LenType)))); } @@ -1104,6 +1114,7 @@ struct VarSizedBinSearchArrayOf TRACE_SANITIZE (this); if (unlikely (!sanitize_shallow (c))) return_trace (false); if (!sizeof... (Ts) && hb_is_trivially_copyable(Type)) return_trace (true); + hb_barrier (); unsigned int count = get_length (); for (unsigned int i = 0; i < count; i++) if (unlikely (!(*this)[i].sanitize (c, std::forward<Ts> (ds)...))) @@ -1130,6 +1141,7 @@ struct VarSizedBinSearchArrayOf { TRACE_SANITIZE (this); return_trace (header.sanitize (c) && + hb_barrier () && Type::static_size <= header.unitSize && c->check_range (bytesZ.arrayZ, header.nUnits, |