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[null] Modernize template work

This commit is contained in:
Behdad Esfahbod 2019-05-10 20:11:29 -07:00
parent 61d150c916
commit 5a171ed3a6
1 changed files with 6 additions and 13 deletions
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19
src/hb-null.hh
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@ -47,15 +47,12 @@
*/
template <typename T, typename B>
struct _hb_null_size
{ enum { value = sizeof (T) }; };
struct _hb_null_size : hb_integral_constant<unsigned, sizeof (T)> {};
template <typename T>
struct _hb_null_size<T, hb_bool_constant<true || sizeof (T::min_size)>>
{ enum { value = T::null_size }; };
struct _hb_null_size<T, hb_bool_constant<true || sizeof (T::min_size)>> : hb_integral_constant<unsigned, T::null_size> {};
template <typename T>
struct hb_null_size
{ enum { value = _hb_null_size<T, hb_true_type>::value }; };
using hb_null_size = _hb_null_size<T, hb_true_type>;
#define hb_null_size(T) hb_null_size<T>::value
/* These doesn't belong here, but since is copy/paste from above, put it here. */
@ -64,15 +61,11 @@ struct hb_null_size
* Returns T::static_size if T::min_size is defined, or sizeof (T) otherwise. */
template <typename T, typename B>
struct _hb_static_size
{ enum { value = sizeof (T) }; };
struct _hb_static_size : hb_integral_constant<unsigned, sizeof (T)> {};
template <typename T>
struct _hb_static_size<T, hb_bool_constant<true || sizeof (T::min_size)>>
{ enum { value = T::static_size }; };
struct _hb_static_size<T, hb_bool_constant<true || sizeof (T::min_size)>> : hb_integral_constant<unsigned, T::static_size> {};
template <typename T>
struct hb_static_size
{ enum { value = _hb_static_size<T, hb_true_type>::value }; };
using hb_static_size = _hb_static_size<T, hb_true_type>;
#define hb_static_size(T) hb_static_size<T>::value