[][src]Crate bytify

Converts a sequence of arbitrary literal values into a single byte array at the compile time.

List of supported literals:

  • UTF-8 characters ('?') as well as UTF-8 strings ("こんにちは世界").
  • Integers, also negative and size-suffixed (-99u32).
    • Non-suffixed integers are written in a form as small as possible.
    • The little endian is used as a default endianness but could be changed build-wise by enabling default-big-endian feature.
    • It is possible to set endianness for a single literal using the "ascription" syntax, e.g. 9000: LE or 0x8u32: be.
  • Floats, also negative and size-suffixed (-3.1415926f64).
    • Non-suffixed floats are written in a form as small as possible.
    • The little endian is used as a default endianness but could be changed build-wise by enabling default-big-endian feature.
    • It is possible to set endianness for a single literal using the "ascription" syntax, e.g. 0.2: LE or -15.92f64: be.

Examples

#[macro_use]
extern crate bytify;

fn main() {
    assert_eq!(&bytify!(
        "The 🎂 is a lie!",
        2948509150, -559038801: BE,
        0.36658e+8, -2583.1f64: le,
    )[..], &[
        b'T', b'h', b'e', b' ',
        0xF0, 0x9F, 0x8E, 0x82,
        b' ', b'i', b's', b' ', b'a', b' ', b'l', b'i', b'e', b'!',
        0xDE, 0xAD, 0xBE, 0xAF, 0xDE, 0xAD, 0xBE, 0xAF,
        0xD4, 0xD6, 0x0B, 0x4C, 0x33, 0x33, 0x33, 0x33, 0x33, 0x2e, 0xa4, 0xc0,
    ][..]);
}

Macros

bytify

Converts a sequence of arbitrary literal values into a single byte array at the compile time.

bytify_ref

The same macro as bytify but returns a slice, instead of array.