diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh index 99634b76f05..dc0ae1d9899 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-open-type.hh @@ -53,14 +53,19 @@ namespace OT { */ /* Integer types in big-endian order and no alignment requirement */ -template <typename Type, unsigned int Size> +template <typename Type, + unsigned int Size = sizeof (Type)> struct IntType { typedef Type type; - typedef hb_conditional<hb_is_signed (Type), signed, unsigned> wide_type; - IntType& operator = (wide_type i) { v = i; return *this; } - operator wide_type () const { return v; } + IntType () = default; + explicit constexpr IntType (Type V) : v {V} {} + IntType& operator = (Type i) { v = i; return *this; } + /* For reason we define cast out operator for signed/unsigned, instead of Type, see: + * https://github.com/harfbuzz/harfbuzz/pull/2875/commits/09836013995cab2b9f07577a179ad7b024130467 */ + operator hb_conditional<hb_is_signed (Type), signed, unsigned> () const { return v; } + bool operator == (const IntType &o) const { return (Type) v == (Type) o.v; } bool operator != (const IntType &o) const { return !(*this == o); } @@ -80,14 +85,21 @@ struct IntType return pb->cmp (*pa); } - template <typename Type2> + template <typename Type2, + hb_enable_if (hb_is_integral (Type2) && + sizeof (Type2) < sizeof (int) && + sizeof (Type) < sizeof (int))> int cmp (Type2 a) const { Type b = v; - if (sizeof (Type) < sizeof (int) && sizeof (Type2) < sizeof (int)) - return (int) a - (int) b; - else - return a < b ? -1 : a == b ? 0 : +1; + return (int) a - (int) b; + } + template <typename Type2, + hb_enable_if (hb_is_convertible (Type2, Type))> + int cmp (Type2 a) const + { + Type b = v; + return a < b ? -1 : a == b ? 0 : +1; } bool sanitize (hb_sanitize_context_t *c) const { @@ -100,12 +112,12 @@ struct IntType DEFINE_SIZE_STATIC (Size); }; -typedef IntType<uint8_t, 1> HBUINT8; /* 8-bit unsigned integer. */ -typedef IntType<int8_t, 1> HBINT8; /* 8-bit signed integer. */ -typedef IntType<uint16_t, 2> HBUINT16; /* 16-bit unsigned integer. */ -typedef IntType<int16_t, 2> HBINT16; /* 16-bit signed integer. */ -typedef IntType<uint32_t, 4> HBUINT32; /* 32-bit unsigned integer. */ -typedef IntType<int32_t, 4> HBINT32; /* 32-bit signed integer. */ +typedef IntType<uint8_t> HBUINT8; /* 8-bit unsigned integer. */ +typedef IntType<int8_t> HBINT8; /* 8-bit signed integer. */ +typedef IntType<uint16_t> HBUINT16; /* 16-bit unsigned integer. */ +typedef IntType<int16_t> HBINT16; /* 16-bit signed integer. */ +typedef IntType<uint32_t> HBUINT32; /* 32-bit unsigned integer. */ +typedef IntType<int32_t> HBINT32; /* 32-bit signed integer. */ /* Note: we cannot defined a signed HBINT24 because there's no corresponding C type. * Works for unsigned, but not signed, since we rely on compiler for sign-extension. */ typedef IntType<uint32_t, 3> HBUINT24; /* 24-bit unsigned integer. */ @@ -163,8 +175,8 @@ struct Tag : HBUINT32 { Tag& operator = (hb_tag_t i) { HBUINT32::operator= (i); return *this; } /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ - operator const char* () const { return reinterpret_cast<const char *> (&this->v); } - operator char* () { return reinterpret_cast<char *> (&this->v); } + operator const char* () const { return reinterpret_cast<const char *> (this); } + operator char* () { return reinterpret_cast<char *> (this); } public: DEFINE_SIZE_STATIC (4); }; |