INNER CODE UNIT · Rust

build_parser_expr

databricks/click · src/command_processor.rs:48

fn build_parser_expr(line: &str, range: Range<usize>) -> Result<(&str, RightExpr<'_>), ClickError> {
    let (click_cmd, rest) = line.split_at(range.start);

    let rbytes = rest.as_bytes();
    let sep = rbytes[0];
    let mut sepcnt = 0;

    while rbytes[sepcnt] == sep {
        sepcnt += 1;
    }

    if sep == b'|' && sepcnt > 1 {
        Err(ClickError::ParseErr(format!(
            "Parse error at {}: unexpected ||",
            range.start
        )))
    } else if sep == b'>' && sepcnt > 2 {
        Err(ClickError::ParseErr(format!(

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