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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-null.hh79
1 files changed, 57 insertions, 22 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-null.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-null.hh
index 1583d5b90e0..8a3e0d4056e 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-null.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-null.hh
@@ -36,7 +36,7 @@
/* Global nul-content Null pool. Enlarge as necessary. */
-#define HB_NULL_POOL_SIZE 1024
+#define HB_NULL_POOL_SIZE 9880
/* Use SFINAE to sniff whether T has min_size; in which case return T::null_size,
* otherwise return sizeof(T). */
@@ -59,7 +59,10 @@ struct hb_null_size
{ enum { value = _hb_null_size<T, _hb_bool_type<true> >::value }; };
#define hb_null_size(T) hb_null_size<T>::value
-/* This doesn't belong here, but since is copy/paste from above, put it here. */
+/* These doesn't belong here, but since is copy/paste from above, put it here. */
+
+/* hb_static_size (T)
+ * Returns T::static_size if T::min_size is defined, or sizeof (T) otherwise. */
template <typename T, typename B>
struct _hb_static_size
@@ -74,26 +77,52 @@ struct hb_static_size
#define hb_static_size(T) hb_static_size<T>::value
+/* hb_assign (obj, value)
+ * Calls obj.set (value) if obj.min_size is defined and value has different type
+ * from obj, or obj = v otherwise. */
+
+template <typename T, typename V, typename B>
+struct _hb_assign
+{ static inline void value (T &o, const V v) { o = v; } };
+template <typename T, typename V>
+struct _hb_assign<T, V, _hb_bool_type<(bool) (1 + (unsigned int) T::min_size)> >
+{ static inline void value (T &o, const V v) { o.set (v); } };
+template <typename T>
+struct _hb_assign<T, T, _hb_bool_type<(bool) (1 + (unsigned int) T::min_size)> >
+{ static inline void value (T &o, const T v) { o = v; } };
+
+template <typename T, typename V>
+static inline void hb_assign (T &o, const V v)
+{ _hb_assign<T, V, _hb_bool_type<true> >::value (o, v); };
+
+
/*
* Null()
*/
+
extern HB_INTERNAL
hb_vector_size_impl_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_size_impl_t) - 1) / sizeof (hb_vector_size_impl_t)];
/* Generic nul-content Null objects. */
template <typename Type>
-static inline Type const & Null (void) {
+static inline Type const & Null () {
static_assert (hb_null_size (Type) <= HB_NULL_POOL_SIZE, "Increase HB_NULL_POOL_SIZE.");
return *reinterpret_cast<Type const *> (_hb_NullPool);
}
-#define Null(Type) Null<typename hb_remove_const (typename hb_remove_reference (Type))> ()
+template <typename QType>
+struct NullHelper
+{
+ typedef typename hb_remove_const (typename hb_remove_reference (QType)) Type;
+ static const Type & get_null () { return Null<Type> (); }
+};
+#define Null(Type) NullHelper<Type>::get_null ()
/* Specializations for arbitrary-content Null objects expressed in bytes. */
#define DECLARE_NULL_NAMESPACE_BYTES(Namespace, Type) \
} /* Close namespace. */ \
extern HB_INTERNAL const unsigned char _hb_Null_##Namespace##_##Type[Namespace::Type::null_size]; \
template <> \
- /*static*/ inline const Namespace::Type& Null<Namespace::Type> (void) { \
+ /*static*/ inline const Namespace::Type& Null<Namespace::Type> () { \
return *reinterpret_cast<const Namespace::Type *> (_hb_Null_##Namespace##_##Type); \
} \
namespace Namespace { \
@@ -105,7 +134,7 @@ static inline Type const & Null (void) {
#define DECLARE_NULL_INSTANCE(Type) \
extern HB_INTERNAL const Type _hb_Null_##Type; \
template <> \
- /*static*/ inline const Type& Null<Type> (void) { \
+ /*static*/ inline const Type& Null<Type> () { \
return _hb_Null_##Type; \
} \
static_assert (true, "Just so we take semicolon after.")
@@ -123,23 +152,29 @@ extern HB_INTERNAL
/* CRAP pool: Common Region for Access Protection. */
template <typename Type>
-static inline Type& Crap (void) {
+static inline Type& Crap () {
static_assert (hb_null_size (Type) <= HB_NULL_POOL_SIZE, "Increase HB_NULL_POOL_SIZE.");
Type *obj = reinterpret_cast<Type *> (_hb_CrapPool);
memcpy (obj, &Null(Type), sizeof (*obj));
return *obj;
}
-#define Crap(Type) Crap<typename hb_remove_const (typename hb_remove_reference (Type))> ()
+template <typename QType>
+struct CrapHelper
+{
+ typedef typename hb_remove_const (typename hb_remove_reference (QType)) Type;
+ static Type & get_crap () { return Crap<Type> (); }
+};
+#define Crap(Type) CrapHelper<Type>::get_crap ()
template <typename Type>
-struct CrapOrNull {
- static inline Type & get (void) { return Crap(Type); }
+struct CrapOrNullHelper {
+ static Type & get () { return Crap(Type); }
};
template <typename Type>
-struct CrapOrNull<const Type> {
- static inline Type const & get (void) { return Null(Type); }
+struct CrapOrNullHelper<const Type> {
+ static const Type & get () { return Null(Type); }
};
-#define CrapOrNull(Type) CrapOrNull<Type>::get ()
+#define CrapOrNull(Type) CrapOrNullHelper<Type>::get ()
/*
@@ -151,16 +186,16 @@ struct hb_nonnull_ptr_t
{
typedef typename hb_remove_pointer (P) T;
- inline hb_nonnull_ptr_t (T *v_ = nullptr) : v (v_) {}
- inline T * operator = (T *v_) { return v = v_; }
- inline T * operator -> (void) const { return get (); }
- inline T & operator * (void) const { return *get (); }
- inline T ** operator & (void) const { return &v; }
+ hb_nonnull_ptr_t (T *v_ = nullptr) : v (v_) {}
+ T * operator = (T *v_) { return v = v_; }
+ T * operator -> () const { return get (); }
+ T & operator * () const { return *get (); }
+ T ** operator & () const { return &v; }
/* Only auto-cast to const types. */
- template <typename C> inline operator const C * (void) const { return get (); }
- inline operator const char * (void) const { return (const char *) get (); }
- inline T * get (void) const { return v ? v : const_cast<T *> (&Null(T)); }
- inline T * get_raw (void) const { return v; }
+ template <typename C> operator const C * () const { return get (); }
+ operator const char * () const { return (const char *) get (); }
+ T * get () const { return v ? v : const_cast<T *> (&Null(T)); }
+ T * get_raw () const { return v; }
T *v;
};