Function block_i64_flat 

pub fn block_i64_flat<'src>() -> impl Parser<'src, &'src str, Vec<i64>, Err<Simple<'src, char>>> + Clone

Block-body helper: parse a sequence of whitespace-separated i64s as flat rows between an outer { … } provided by the caller. The body itself is a sequence of i64s with any whitespace (including newlines) between them.

Real usage: device slm.filling { 0 1 2 3 };.