rqml/pest/qml.pest

COMMENT = _{ "/*" ~ (!"*/" ~ ANY)* ~ "*/" }
string = ${ "\"" ~ inner ~ "\"" }
inner = @{ char* }
char = {
    !("\"" | "\\") ~ ANY
    | "\\" ~ ("\"" | "\\" | "/" | "b" | "f" | "n" | "r" | "t")
    | "\\" ~ ("u" ~ ASCII_HEX_DIGIT{4})
}

number = @{
    "-"?
    ~ ("0" | ASCII_NONZERO_DIGIT ~ ASCII_DIGIT*)
    ~ ("." ~ ASCII_DIGIT*)?
    ~ (^"e" ~ ("+" | "-")? ~ ASCII_DIGIT+)?
}

alpha = { 'a'..'z' | 'A'..'Z' }
digit = { '0'..'9' }

ident = { (alpha | digit | ".")+}
version = {digit* ~ "." ~ digit*}

import = {"import" ~ WHITE_SPACE ~ ident ~ WHITE_SPACE ~ NEWLINE*}

function_code = {
    !(                // if the following text is not
        "]]"           //     a space
    )
    ~ ANY             // then consume one character
}

function = {WHITE_SPACE* ~ ident ~ WHITE_SPACE* ~ "=" ~ WHITE_SPACE* ~ "[[" ~ function_code* ~ "]]" ~ NEWLINE* }

property = {WHITE_SPACE* ~ ident ~ ":" ~ WHITE_SPACE* ~ (number|string |ident|("[[" ~ function_code* ~ "]]")) ~ NEWLINE* }

body = {WHITE_SPACE* ~ ident ~ WHITE_SPACE ~ "{"  ~ NEWLINE* ~ (property|function|body)* ~ NEWLINE* ~ WHITE_SPACE* ~ "}" ~ NEWLINE?}

qml = {import* ~ NEWLINE* ~ body}