bitpattern

bitwise pattern matching and extracting

Usage

Cargo.toml [dependencies] bitpattern = "0.1.0"

Example

```rust let x = 0xacu8; // 10101100

// '0' means the bit must be 0.
// '1' means the bit must be 1.
// '_' can be uses as separator.
assert_eq!(bitpattern!("1010_1100", x), Some(()));
assert_eq!(bitpattern!("1010_0100", x), None);

// '?' means the bit can be 0 or 1.
assert_eq!(bitpattern!("1?10_1?00", x), Some(()));

// Other charactors can be used for extracting.
// 'a' extracts a single bit.
assert_eq!(bitpattern!("1a10_1100", x), Some(0));
assert_eq!(bitpattern!("10a0_1100", x), Some(1));

// Multi-bit extracting by continuous charactors.
assert_eq!(bitpattern!("1aaa_a100", x), Some(5));

// Multiple extracting.
assert_eq!(bitpattern!("1aa0_aa00", x), Some((1, 3)));

// If the extracting fields are adjacent, the different charactors can be used.
assert_eq!(bitpattern!("1aab_bccc", x), Some((1, 1, 4)));

```

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.