alchemy/src/byte_sized.rs

/// The size of an 8 bit whole number. 1 byte.
pub const U8_BYTES: usize = 1usize;

/// The size of a 16 bit whole number. 2 byte.
pub const U16_BYTES: usize = 2usize;

/// The size of a 32 bit whole number. 4 byte.
pub const U32_BYTES: usize = 4usize;

/// The size of a 64 bit whole number. 8 byte.
pub const U64_BYTES: usize = 8usize;

/// The size of an 8 bit integer. 1 byte.
pub const I8_BYTES: usize = 1usize;

/// The size of a 16 bit integer. 2 bytes.
pub const I16_BYTES: usize = 2usize;

/// The size of a 32 bit integer. 4 bytes.
pub const I32_BYTES: usize = 4usize;

/// The size of a 64 bit integer. 8 bytes.
pub const I64_BYTES: usize = 8usize;


/// The size of a 32 bit floating point number. 4 bytes.
pub const F32_BYTES: usize = 4usize;

/// The size of a 64 bit floating point number. 8 bytes.
pub const F64_BYTES: usize = 8usize;

#[cfg(target_pointer_width = "8")]
/// This should be the size of the systems pointer width. 1 byte.
pub const USIZE_BYTES: usize = 1usize;

#[cfg(target_pointer_width = "16")]
/// This should be the size of the systems pointer width. 2 bytes.
pub const USIZE_BYTES: usize = 2usize;

#[cfg(target_pointer_width = "32")]
/// This should be the size of the systems pointer width. 4 bytes.
pub const USIZE_BYTES: usize = 4usize;

#[cfg(target_pointer_width = "64")]
/// This should be the size of the systems pointer width. 8 bytes.
pub const USIZE_BYTES: usize = 8usize;

#[cfg(target_pointer_width = "8")]
/// This should be the size of the systems pointer width. 1 byte.
pub const ISIZE_BYTES: usize = 1usize;

#[cfg(target_pointer_width = "16")]
/// This should be the size of the systems pointer width. 2 bytes.
pub const ISIZE_BYTES: usize = 2usize;

#[cfg(target_pointer_width = "32")]
/// This should be the size of the systems pointer width. 4 bytes.
pub const ISIZE_BYTES: usize = 4usize;

#[cfg(target_pointer_width = "64")]
/// This should be the size of the systems pointer width. 8 bytes.
pub const ISIZE_BYTES: usize = 8usize;



// Note: This is named after my sister Jessica "Monkey" Smith.
/// Denotes a type that knows how many bits/bytes
/// it takes to represent it.
pub trait ByteSized
{
   /// The amount of bits it takes to represent this type.
   const BITS: usize;

   /// The amount of bytes it takes to represent this type.
   const BYTES: usize;



   /// The amount of bits it takes to represent this type.
   fn get_bit_size() -> usize;

   /// The amount of bytes it takes to represent this type.
   fn get_byte_size() -> usize;
}



macro_rules! byte_sized_impl
{
   ($(($varType: ty, $numBytes: expr))*) =>
   {$(
      impl ByteSized for $varType
      {
         const BITS: usize = $numBytes * 8;
         const BYTES: usize = $numBytes;



         fn get_bit_size() -> usize
         {
            Self::BITS
         }

         fn get_byte_size() -> usize
         {
            Self::BYTES
         }
      }
   )*}
}

byte_sized_impl!((u8, U8_BYTES) (u16, U16_BYTES));
byte_sized_impl!((u32, U32_BYTES) (u64, I64_BYTES));
byte_sized_impl!((i8, I8_BYTES) (i16, I16_BYTES));
byte_sized_impl!((i32, I32_BYTES) (i64, U64_BYTES));
byte_sized_impl!((f32, F32_BYTES) (f64, F64_BYTES));
byte_sized_impl!((usize, USIZE_BYTES) (isize, ISIZE_BYTES));