newline = ${ "\n" | "\r" }
space = ${ " "+ }
other = ${ !(string) ~ ANY }
comment = ${ single_line_comment | multiline_comment }
single_line_comment = _{ "#" ~ (!(newline) ~ ANY)* }
multiline_comment = _{ "'''" ~ (!("'''") ~ ANY)* ~ "'''"}
string = ${ string_val }
string_val = _{
("'" ~ (!(newline | "'") ~ ANY)* ~ "'")
| ("\"\"\"" ~ (!("\"\"\"") ~ ANY)* ~ "\"\"\""+)
| ("\"" ~ (!(newline | "\"") ~ ANY)* ~ "\"")
}
regexp = ${
( "r'" ~ (!(newline | "'") ~ ANY)* ~ "'" )
| ("r\"\"\"" ~ (!("\"\"\"") ~ ANY)* ~ "\"\"\"")
| ("compile(" ~ " "* ~ string_val ~ (!")" ~ ANY)* ~ ")" )
}
line = _{ regexp | comment | string | space | other | newline }
item = _{ SOI ~ line* ~ EOI }