Class CmdlineOptions

tools/bitwise.rs:14–54

#[derive(Debug, Parser)]
#[clap(name = "bitwise", verbatim_doc_comment)]
struct CmdlineOptions {
    /// The log level
    #[clap(short, long, default_value_t = tracing::Level::INFO)]
    log_level: tracing::Level,

    /// Output file to write result to. Defaults to stdout.
    #[clap(short, long)]
    output: Option<PathBuf>,

    /// Whether to output points or connected lines
    #[clap(long, default_value_t = false)]
    points: bool,

    /// Maximum x coordinate
    #[clap(short = 'x', long, default_value_t = 0)]
    x_min: i64,

    /// Maximum x coordinate
    #[clap(short = 'X', long, default_value_t = 48)]
    x_max: i64,

    /// Minimum y coordinate
    #[clap(short = 'y', long, default_value_t = 0)]
    y_min: i64,

    /// Maximum y coordinate
    #[clap(short = 'Y', long, default_value_t = 48)]
    y_max: i64,

    /// The order to search adjacent cells for neighbors. Comma separated.
    #[clap(short, long,
           use_value_delimiter = true,
           value_delimiter = ',',
           default_values_t = [Neighbor::East, Neighbor::SouthEast, Neighbor::South, Neighbor::SouthWest]
    )]
    neighbor_search_order: Vec<Neighbor>,

    /// A valid Rust expression taking 'x' and 'y', and returning an i64
    #[clap(default_value = "(x & y) & (x ^ y) % 13")]
    expression: String,
}

type BitwiseExpression = Box<dyn Fn(i64, i64) -> i64>;