bitpattern

位运算模式匹配和提取

用法

[dependencies]
bitpattern = "0.1.0"

示例

    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)));

许可证

许可协议为以下之一

• Apache 许可证2.0版（LICENSE-APACHE 或 http://www.apache.org/licenses/LICENSE-2.0）
• MIT 许可证（LICENSE-MIT 或 http://opensource.org/licenses/MIT）

任选其一。

贡献

除非您明确表示，否则根据 Apache-2.0 许可证定义的，任何有意提交以包含在作品中的贡献，都将根据上述许可进行双重许可，不附加任何额外的条款或条件。