AK: Add templated Span<u8> and Span<u8 const> constructors for C-arrays

This helper constructor exists on the unspecialized Span<T> class also,
and is convenient for e.g. creating Bytes from:

    u8 buffer[64];
    Bytes bytes { buffer };

1 files changed, 17 insertions, 0 deletions

diff --git a/AK/Span.h b/AK/Span.h
index 4399dcc136..6c77ce04f4 100644
--- a/AK/Span.h
+++ b/AK/Span.h
@@ -64,12 +64,20 @@ public:
         , m_size(size)
     {
     }
+
     ALWAYS_INLINE Span(void* values, size_t size)
         : m_values(reinterpret_cast<u8*>(values))
         , m_size(size)
     {
     }
 
+    template<size_t size>
+    ALWAYS_INLINE constexpr Span(u8 (&values)[size])
+        : m_values(values)
+        , m_size(size)
+    {
+    }
+
 protected:
     u8* m_values { nullptr };
     size_t m_size { 0 };
@@ -85,17 +93,26 @@ public:
         , m_size(size)
     {
     }
+
     ALWAYS_INLINE Span(void const* values, size_t size)
         : m_values(reinterpret_cast<u8 const*>(values))
         , m_size(size)
     {
     }
+
     ALWAYS_INLINE Span(char const* values, size_t size)
         : m_values(reinterpret_cast<u8 const*>(values))
         , m_size(size)
     {
     }
 
+    template<size_t size>
+    ALWAYS_INLINE constexpr Span(u8 const (&values)[size])
+        : m_values(values)
+        , m_size(size)
+    {
+    }
+
 protected:
     u8 const* m_values { nullptr };
     size_t m_size { 0 };