#include "hb-null.hh"
#include "hb-number.hh"
+#include <algorithm>
+#include <initializer_list>
+#include <functional>
+#include <new>
+
+/*
+ * Flags
+ */
+
+/* Enable bitwise ops on enums marked as flags_t */
+/* To my surprise, looks like the function resolver is happy to silently cast
+ * one enum to another... So this doesn't provide the type-checking that I
+ * originally had in mind... :(.
+ *
+ * For MSVC warnings, see: https://github.com/harfbuzz/harfbuzz/pull/163
+ */
+#ifdef _MSC_VER
+# pragma warning(disable:4200)
+# pragma warning(disable:4800)
+#endif
+#define HB_MARK_AS_FLAG_T(T) \
+ extern "C++" { \
+ static inline constexpr T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \
+ static inline constexpr T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \
+ static inline constexpr T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \
+ static inline constexpr T operator ~ (T r) { return T (~(unsigned int) r); } \
+ static inline T& operator |= (T &l, T r) { l = l | r; return l; } \
+ static inline T& operator &= (T& l, T r) { l = l & r; return l; } \
+ static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \
+ } \
+ static_assert (true, "")
+
+/* Useful for set-operations on small enums.
+ * For example, for testing "x ∈ {x1, x2, x3}" use:
+ * (FLAG_UNSAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
+ */
+#define FLAG(x) (static_assert_expr ((unsigned)(x) < 32) + (((uint32_t) 1U) << (unsigned)(x)))
+#define FLAG_UNSAFE(x) ((unsigned)(x) < 32 ? (((uint32_t) 1U) << (unsigned)(x)) : 0)
+#define FLAG_RANGE(x,y) (static_assert_expr ((x) < (y)) + FLAG(y+1) - FLAG(x))
+#define FLAG64(x) (static_assert_expr ((unsigned)(x) < 64) + (((uint64_t) 1ULL) << (unsigned)(x)))
+#define FLAG64_UNSAFE(x) ((unsigned)(x) < 64 ? (((uint64_t) 1ULL) << (unsigned)(x)) : 0)
+
+
+/*
+ * Big-endian integers.
+ */
+
+/* Endian swap, used in Windows related backends */
+static inline constexpr uint16_t hb_uint16_swap (uint16_t v)
+{ return (v >> 8) | (v << 8); }
+static inline constexpr uint32_t hb_uint32_swap (uint32_t v)
+{ return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16); }
+
+template <typename Type, int Bytes = sizeof (Type)>
+struct BEInt;
+template <typename Type>
+struct BEInt<Type, 1>
+{
+ public:
+ BEInt () = default;
+ constexpr BEInt (Type V) : v {uint8_t (V)} {}
+ constexpr operator Type () const { return v; }
+ private: uint8_t v;
+};
+template <typename Type>
+struct BEInt<Type, 2>
+{
+ public:
+ BEInt () = default;
+ constexpr BEInt (Type V) : v {uint8_t ((V >> 8) & 0xFF),
+ uint8_t ((V ) & 0xFF)} {}
+
+ struct __attribute__((packed)) packed_uint16_t { uint16_t v; };
+ constexpr operator Type () const
+ {
+#if ((defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)) && \
+ defined(__BYTE_ORDER) && \
+ (__BYTE_ORDER == __LITTLE_ENDIAN || __BYTE_ORDER == __BIG_ENDIAN)
+ /* Spoon-feed the compiler a big-endian integer with alignment 1.
+ * https://github.com/harfbuzz/harfbuzz/pull/1398 */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ return __builtin_bswap16 (((packed_uint16_t *) this)->v);
+#else /* __BYTE_ORDER == __BIG_ENDIAN */
+ return ((packed_uint16_t *) this)->v;
+#endif
+#else
+ return (v[0] << 8)
+ + (v[1] );
+#endif
+ }
+ private: uint8_t v[2];
+};
+template <typename Type>
+struct BEInt<Type, 3>
+{
+ static_assert (!std::is_signed<Type>::value, "");
+ public:
+ BEInt () = default;
+ constexpr BEInt (Type V) : v {uint8_t ((V >> 16) & 0xFF),
+ uint8_t ((V >> 8) & 0xFF),
+ uint8_t ((V ) & 0xFF)} {}
+
+ constexpr operator Type () const { return (v[0] << 16)
+ + (v[1] << 8)
+ + (v[2] ); }
+ private: uint8_t v[3];
+};
+template <typename Type>
+struct BEInt<Type, 4>
+{
+ public:
+ BEInt () = default;
+ constexpr BEInt (Type V) : v {uint8_t ((V >> 24) & 0xFF),
+ uint8_t ((V >> 16) & 0xFF),
+ uint8_t ((V >> 8) & 0xFF),
+ uint8_t ((V ) & 0xFF)} {}
+ constexpr operator Type () const { return (v[0] << 24)
+ + (v[1] << 16)
+ + (v[2] << 8)
+ + (v[3] ); }
+ private: uint8_t v[4];
+};
+
+/* Floats. */
+
+/* We want our rounding towards +infinity. */
+static inline float
+_hb_roundf (float x) { return floorf (x + .5f); }
+#define roundf(x) _hb_roundf(x)
+
/* Encodes three unsigned integers in one 64-bit number. If the inputs have more than 21 bits,
* values will be truncated / overlap, and might not decode exactly. */
#define HB_CODEPOINT_DECODE3_11_7_14_2(v) ((hb_codepoint_t) (((v) >> 14) & 0x007Fu) | 0x0300)
#define HB_CODEPOINT_DECODE3_11_7_14_3(v) ((hb_codepoint_t) (v) & 0x3FFFu)
+
struct
{
/* Note. This is dangerous in that if it's passed an rvalue, it returns rvalue-reference. */
template <typename T> constexpr auto
- operator () (T&& v) const HB_AUTO_RETURN ( hb_forward<T> (v) )
+ operator () (T&& v) const HB_AUTO_RETURN ( std::forward<T> (v) )
}
HB_FUNCOBJ (hb_identity);
struct
struct
{
template <typename T> constexpr bool
- operator () (T&& v) const { return bool (hb_forward<T> (v)); }
+ operator () (T&& v) const { return bool (std::forward<T> (v)); }
}
HB_FUNCOBJ (hb_bool);
+template <typename T>
+static inline
+T hb_coerce (const T v) { return v; }
+template <typename T, typename V,
+ hb_enable_if (!hb_is_same (hb_decay<T>, hb_decay<V>) && std::is_pointer<V>::value)>
+static inline
+T hb_coerce (const V v) { return *v; }
+
struct
{
private:
template <typename T> constexpr auto
- impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, hb_deref (v).hash ())
+ impl (const T& v, hb_priority<2>) const HB_RETURN (uint32_t, hb_deref (v).hash ())
+
+/* Sadly, we must give further hints to VS2015 to build the following template item */
+#if !defined (_MSC_VER) || defined (__clang__) || (_MSC_VER >= 1910)
+ template <typename T> constexpr auto
+ impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, std::hash<hb_decay<decltype (hb_deref (v))>>{} (hb_deref (v)))
+#else
+ template <typename T> constexpr auto
+ impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, std::hash<hb_decay<decltype (hb_deref (v).hash ())>>{} (hb_deref (v)))
+#endif
template <typename T,
- hb_enable_if (hb_is_integral (T))> constexpr auto
+ hb_enable_if (std::is_integral<T>::value)> constexpr auto
impl (const T& v, hb_priority<0>) const HB_AUTO_RETURN
(
/* Knuth's multiplicative method: */
/* Pointer-to-member-function. */
template <typename Appl, typename T, typename ...Ts> auto
impl (Appl&& a, hb_priority<2>, T &&v, Ts&&... ds) const HB_AUTO_RETURN
- ((hb_deref (hb_forward<T> (v)).*hb_forward<Appl> (a)) (hb_forward<Ts> (ds)...))
+ ((hb_deref (std::forward<T> (v)).*std::forward<Appl> (a)) (std::forward<Ts> (ds)...))
/* Pointer-to-member. */
template <typename Appl, typename T> auto
impl (Appl&& a, hb_priority<1>, T &&v) const HB_AUTO_RETURN
- ((hb_deref (
hb_forward<T> (v))).*hb_forward<Appl> (a))
+ ((hb_deref (
std::forward<T> (v))).*std::forward<Appl> (a))
/* Operator(). */
template <typename Appl, typename ...Ts> auto
impl (Appl&& a, hb_priority<0>, Ts&&... ds) const HB_AUTO_RETURN
- (hb_deref (hb_forward<Appl> (a)) (hb_forward<Ts> (ds)...))
+ (hb_deref (std::forward<Appl> (a)) (std::forward<Ts> (ds)...))
public:
template <typename Appl, typename ...Ts> auto
operator () (Appl&& a, Ts&&... ds) const HB_AUTO_RETURN
(
- impl (
hb_forward<Appl> (a),
+ impl (
std::forward<Appl> (a),
hb_prioritize,
- hb_forward<Ts> (ds)...)
+ std::forward<Ts> (ds)...)
)
}
HB_FUNCOBJ (hb_invoke);
hb_declval (V),
hb_declval (Ts)...))
{
- return hb_invoke (
hb_forward<Appl> (a),
- hb_forward<V> (v),
- hb_forward<Ts> (ds)...);
+ return hb_invoke (
std::forward<Appl> (a),
+ std::forward<V> (v),
+ std::forward<Ts> (ds)...);
}
template <typename T0, typename ...Ts,
unsigned P = Pos,
hb_declval (V),
hb_declval (Ts)...))
{
- return hb_invoke (
hb_forward<Appl> (a),
- hb_forward<T0> (d0),
- hb_forward<V> (v),
- hb_forward<Ts> (ds)...);
+ return hb_invoke (
std::forward<Appl> (a),
+ std::forward<T0> (d0),
+ std::forward<V> (v),
+ std::forward<Ts> (ds)...);
}
private:
#define HB_PARTIALIZE(Pos) \
template <typename _T> \
decltype(auto) operator () (_T&& _v) const \
- { return hb_partial<Pos> (this, hb_forward<_T> (_v)); } \
+ { return hb_partial<Pos> (this, std::forward<_T> (_v)); } \
static_assert (true, "")
#else
/* https://github.com/harfbuzz/harfbuzz/issues/1724 */
#define HB_PARTIALIZE(Pos) \
template <typename _T> \
auto operator () (_T&& _v) const HB_AUTO_RETURN \
- (hb_partial<Pos> (+this, hb_forward<_T> (_v))) \
+ (hb_partial<Pos> (+this, std::forward<_T> (_v))) \
static_assert (true, "")
#endif
template <typename Pred, typename Val> auto
impl (Pred&& p, Val &&v, hb_priority<1>) const HB_AUTO_RETURN
- (hb_deref (hb_forward<Pred> (p)).has (hb_forward<Val> (v)))
+ (
+ hb_deref (std::forward<Pred> (p)).has (std::forward<Val> (v))
+ )
template <typename Pred, typename Val> auto
impl (Pred&& p, Val &&v, hb_priority<0>) const HB_AUTO_RETURN
(
- hb_invoke (
hb_forward<Pred> (p),
- hb_forward<Val> (v))
+ hb_invoke (
std::forward<Pred> (p),
+ std::forward<Val> (v))
)
public:
template <typename Pred, typename Val> auto
operator () (Pred&& p, Val &&v) const HB_RETURN (bool,
- impl (
hb_forward<Pred> (p),
- hb_forward<Val> (v),
+ impl (
std::forward<Pred> (p),
+ std::forward<Val> (v),
hb_prioritize)
)
}
template <typename Pred, typename Val> auto
impl (Pred&& p, Val &&v, hb_priority<1>) const HB_AUTO_RETURN
(
- hb_has (
hb_forward<Pred> (p),
- hb_forward<Val> (v))
+ hb_has (
std::forward<Pred> (p),
+ std::forward<Val> (v))
)
template <typename Pred, typename Val> auto
impl (Pred&& p, Val &&v, hb_priority<0>) const HB_AUTO_RETURN
(
- hb_forward<Pred> (p) == hb_forward<Val> (v)
+ std::forward<Pred> (p) == std::forward<Val> (v)
)
public:
template <typename Pred, typename Val> auto
operator () (Pred&& p, Val &&v) const HB_RETURN (bool,
- impl (
hb_forward<Pred> (p),
- hb_forward<Val> (v),
+ impl (
std::forward<Pred> (p),
+ std::forward<Val> (v),
hb_prioritize)
)
}
template <typename Proj, typename Val> auto
impl (Proj&& f, Val &&v, hb_priority<2>) const HB_AUTO_RETURN
- (hb_deref (hb_forward<Proj> (f)).get (hb_forward<Val> (v)))
+ (
+ hb_deref (std::forward<Proj> (f)).get (std::forward<Val> (v))
+ )
template <typename Proj, typename Val> auto
impl (Proj&& f, Val &&v, hb_priority<1>) const HB_AUTO_RETURN
(
- hb_invoke (
hb_forward<Proj> (f),
- hb_forward<Val> (v))
+ hb_invoke (
std::forward<Proj> (f),
+ std::forward<Val> (v))
)
template <typename Proj, typename Val> auto
impl (Proj&& f, Val &&v, hb_priority<0>) const HB_AUTO_RETURN
(
- hb_forward<Proj> (f)[hb_forward<Val> (v)]
+ std::forward<Proj> (f)[std::forward<Val> (v)]
)
public:
template <typename Proj, typename Val> auto
operator () (Proj&& f, Val &&v) const HB_AUTO_RETURN
(
- impl (
hb_forward<Proj> (f),
- hb_forward<Val> (v),
+ impl (
std::forward<Proj> (f),
+ std::forward<Val> (v),
hb_prioritize)
)
}
HB_FUNCOBJ (hb_get);
+struct
+{
+ private:
+
+ template <typename T1, typename T2> auto
+ impl (T1&& v1, T2 &&v2, hb_priority<3>) const HB_AUTO_RETURN
+ (
+ std::forward<T2> (v2).cmp (std::forward<T1> (v1)) == 0
+ )
+
+ template <typename T1, typename T2> auto
+ impl (T1&& v1, T2 &&v2, hb_priority<2>) const HB_AUTO_RETURN
+ (
+ std::forward<T1> (v1).cmp (std::forward<T2> (v2)) == 0
+ )
+
+ template <typename T1, typename T2> auto
+ impl (T1&& v1, T2 &&v2, hb_priority<1>) const HB_AUTO_RETURN
+ (
+ std::forward<T1> (v1) == std::forward<T2> (v2)
+ )
+
+ template <typename T1, typename T2> auto
+ impl (T1&& v1, T2 &&v2, hb_priority<0>) const HB_AUTO_RETURN
+ (
+ std::forward<T2> (v2) == std::forward<T1> (v1)
+ )
+
+ public:
+
+ template <typename T1, typename T2> auto
+ operator () (T1&& v1, T2 &&v2) const HB_AUTO_RETURN
+ (
+ impl (std::forward<T1> (v1),
+ std::forward<T2> (v2),
+ hb_prioritize)
+ )
+}
+HB_FUNCOBJ (hb_equal);
+
template <typename T1, typename T2>
struct hb_pair_t
typedef T2 second_t;
typedef hb_pair_t<T1, T2> pair_t;
+ template <typename U1 = T1, typename U2 = T2,
+ hb_enable_if (std::is_default_constructible<U1>::value &&
+ std::is_default_constructible<U2>::value)>
+ hb_pair_t () : first (), second () {}
hb_pair_t (T1 a, T2 b) : first (a), second (b) {}
template <typename Q1, typename Q2,
{
template <typename T, typename T2> constexpr auto
operator () (T&& a, T2&& b) const HB_AUTO_RETURN
- (hb_forward<T> (a) <= hb_forward<T2> (b) ? hb_forward<T> (a) : hb_forward<T2> (b))
+ (a <= b ? std::forward<T> (a) : std::forward<T2> (b))
}
HB_FUNCOBJ (hb_min);
struct
{
template <typename T, typename T2> constexpr auto
operator () (T&& a, T2&& b) const HB_AUTO_RETURN
- (hb_forward<T> (a) >= hb_forward<T2> (b) ? hb_forward<T> (a) : hb_forward<T2> (b))
+ (a >= b ? std::forward<T> (a) : std::forward<T2> (b))
}
HB_FUNCOBJ (hb_max);
struct
{
template <typename T, typename T2, typename T3> constexpr auto
operator () (T&& x, T2&& min, T3&& max) const HB_AUTO_RETURN
- (hb_min (hb_max (hb_forward<T> (x), hb_forward<T2> (min)), hb_forward<T3> (max)))
+ (hb_min (hb_max (std::forward<T> (x), std::forward<T2> (min)), std::forward<T3> (max)))
}
HB_FUNCOBJ (hb_clamp);
+struct
+{
+ template <typename T> void
+ operator () (T& a, T& b) const
+ {
+ using std::swap; // allow ADL
+ swap (a, b);
+ }
+}
+HB_FUNCOBJ (hb_swap);
/*
* Bithacks.
/* Return the number of 1 bits in v. */
template <typename T>
-static inline HB_CONST_FUNC unsigned int
+static inline unsigned int
hb_popcount (T v)
{
#if (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__)
/* Returns the number of bits needed to store number */
template <typename T>
-static inline HB_CONST_FUNC unsigned int
+static inline unsigned int
hb_bit_storage (T v)
{
if (unlikely (!v)) return 0;
/* Returns the number of zero bits in the least significant side of v */
template <typename T>
-static inline HB_CONST_FUNC unsigned int
+static inline unsigned int
hb_ctz (T v)
{
if (unlikely (!v)) return 8 * sizeof (T);
#define ARRAY_LENGTH_CONST(__array) ((signed int) (sizeof (__array) / sizeof (__array[0])))
+static inline void *
+hb_memcpy (void *__restrict dst, const void *__restrict src, size_t len)
+{
+ /* It's illegal to pass 0 as size to memcpy. */
+ if (unlikely (!len)) return dst;
+ return memcpy (dst, src, len);
+}
+
static inline int
hb_memcmp (const void *a, const void *b, unsigned int len)
{
template <typename T> static inline bool
hb_in_range (T u, T lo, T hi)
{
- static_assert (!hb_is_signed<T>::value, "");
+ static_assert (!std::is_signed<T>::value, "");
/* The casts below are important as if T is smaller than int,
* the subtract results will become a signed int! */
#pragma GCC diagnostic ignored "-Wcast-align"
V* p = (V*) (((const char *) base) + (mid * stride));
#pragma GCC diagnostic pop
- int c = compar ((const void *) hb_addressof (key), (const void *) p, ds...);
+ int c = compar ((const void *) std::addressof (key), (const void *) p, ds...);
if (c < 0)
max = mid - 1;
else if (c > 0)
/* Operators. */
-struct hb_bitwise_and
+struct
{ HB_PARTIALIZE(2);
- static constexpr bool passthru_left = false;
- static constexpr bool passthru_right = false;
template <typename T> constexpr auto
operator () (const T &a, const T &b) const HB_AUTO_RETURN (a & b)
}
HB_FUNCOBJ (hb_bitwise_and);
-struct hb_bitwise_or
+struct
{ HB_PARTIALIZE(2);
- static constexpr bool passthru_left = true;
- static constexpr bool passthru_right = true;
template <typename T> constexpr auto
operator () (const T &a, const T &b) const HB_AUTO_RETURN (a | b)
}
HB_FUNCOBJ (hb_bitwise_or);
-struct hb_bitwise_xor
+struct
{ HB_PARTIALIZE(2);
- static constexpr bool passthru_left = true;
- static constexpr bool passthru_right = true;
template <typename T> constexpr auto
operator () (const T &a, const T &b) const HB_AUTO_RETURN (a ^ b)
}
HB_FUNCOBJ (hb_bitwise_xor);
-struct hb_bitwise_sub
+struct
+{ HB_PARTIALIZE(2);
+ template <typename T> constexpr auto
+ operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a & b)
+}
+HB_FUNCOBJ (hb_bitwise_lt);
+struct
{ HB_PARTIALIZE(2);
- static constexpr bool passthru_left = true;
- static constexpr bool passthru_right = false;
template <typename T> constexpr auto
operator () (const T &a, const T &b) const HB_AUTO_RETURN (a & ~b)
}
-HB_FUNCOBJ (hb_bitwise_sub);
+HB_FUNCOBJ (hb_bitwise_gt); // aka sub
+struct
+{ HB_PARTIALIZE(2);
+ template <typename T> constexpr auto
+ operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a | b)
+}
+HB_FUNCOBJ (hb_bitwise_le);
+struct
+{ HB_PARTIALIZE(2);
+ template <typename T> constexpr auto
+ operator () (const T &a, const T &b) const HB_AUTO_RETURN (a | ~b)
+}
+HB_FUNCOBJ (hb_bitwise_ge);
struct
{
template <typename T> constexpr auto
struct
{ HB_PARTIALIZE(2);
template <typename T, typename T2> constexpr auto
+ operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (b - a)
+}
+HB_FUNCOBJ (hb_rsub);
+struct
+{ HB_PARTIALIZE(2);
+ template <typename T, typename T2> constexpr auto
operator () (const T &a, const T2 &b) const HB_AUTO_RETURN (a * b)
}
HB_FUNCOBJ (hb_mul);
projects / platform / upstream / harfbuzz.git / blobdiff