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authorWeiyi Wang <wwylele@gmail.com>2019-01-25 18:16:23 +0100
committerfearlessTobi <thm.frey@gmail.com>2019-02-06 17:29:39 +0100
commit6b81ceb060a0e985380bc33d2f51dcc76aad3eb3 (patch)
treec24e09bdd88947696f7ea6827f18a10a847df8bb /src/common
parentcommon/swap: remove default value for swap type internal storage (diff)
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Diffstat (limited to '')
-rw-r--r--src/common/bit_field.h12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/common/bit_field.h b/src/common/bit_field.h
index 21e07925d..bd9e21e1e 100644
--- a/src/common/bit_field.h
+++ b/src/common/bit_field.h
@@ -34,6 +34,7 @@
#include <limits>
#include <type_traits>
#include "common/common_funcs.h"
+#include "common/swap.h"
/*
* Abstract bitfield class
@@ -108,7 +109,7 @@
* symptoms.
*/
#pragma pack(1)
-template <std::size_t Position, std::size_t Bits, typename T>
+template <std::size_t Position, std::size_t Bits, typename T, typename EndianTag = LETag>
struct BitField {
private:
// We hide the copy assigment operator here, because the default copy
@@ -127,6 +128,8 @@ private:
// We store the value as the unsigned type to avoid undefined behaviour on value shifting
using StorageType = std::make_unsigned_t<UnderlyingType>;
+ using StorageTypeWithEndian = typename AddEndian<StorageType, EndianTag>::type;
+
public:
/// Constants to allow limited introspection of fields if needed
static constexpr std::size_t position = Position;
@@ -172,7 +175,7 @@ public:
}
constexpr FORCE_INLINE void Assign(const T& value) {
- storage = (storage & ~mask) | FormatValue(value);
+ storage = (static_cast<StorageType>(storage) & ~mask) | FormatValue(value);
}
constexpr T Value() const {
@@ -184,7 +187,7 @@ public:
}
private:
- StorageType storage;
+ StorageTypeWithEndian storage;
static_assert(bits + position <= 8 * sizeof(T), "Bitfield out of range");
@@ -195,3 +198,6 @@ private:
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable in a BitField");
};
#pragma pack()
+
+template <std::size_t Position, std::size_t Bits, typename T>
+using BitFieldBE = BitField<Position, Bits, T, BETag>;