pest_derive 2.9.3

pest's derive macro
Documentation 
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// Example grammar from the issue demonstrating deep nesting
// This grammar can cause stack overflow with deeply nested parentheses

WHITESPACE = _{ " " | "\t" | "\n" | "\r" }
expression = { SOI ~ add_expr ~ EOI }
add_expr = { mul_expr ~ ("+" ~ mul_expr)* }
mul_expr = { primary ~ ("*" ~ primary)* }
primary = { number | "(" ~ add_expr ~ ")" }
number = @{ ASCII_DIGIT+ }