// Monarch syntax highlighting for the snakeskin language.
export default {
    keywords: [
        '@@ignore','block','break','catch','continue','doctype','else','eval','extends','finally','for','forEach','forIn','head','if','import','include','interface','namespace','placeholder','putIn','return','super','switch','target','template','throw','try','unless','with'
    ],
    operators: [
        '#','&+','*','+=','-','->','<','<!','=','=>','>','?'
    ],
    symbols: /#|&\+|\*|\+=|-|->|<|<!|=|=>|>|\?/,

    tokenizer: {
        initial: [
            { regex: /(?<=\n\s*)\(\)\s*=>\s/, action: {"token":"FUNC_PREFIX"} },
            { regex: /(?<=[\n\r]+\s+)(?!=+=|\/\*)[^\-\s<:?].*?(?=\r?\n)/s, action: {"token":"TEXT"} },
            { regex: /,/, action: {"token":"COMMA"} },
            { regex: /JS Object, will be overwritten in the TokenBuilder/, action: {"token":"JS_EXPR"} },
            { regex: /(?<==\s*).+?(?=\s+\.\s+|\s+\|\s+)/s, action: {"token":"ATTR_VAL_ML"} },
            { regex: /(?<=\s(return|=|if|for|throw|unless|- target|\?) ).+?(?=\r?\n)/, action: {"token":"EXPR_TILL_EOL"} },
            { regex: /from/, action: {"token":"FROM"} },
            { regex: /[_a-zA-Z\-][\w\-]*?(?=-\w)[\-\w]+/, action: {"token":"DASHED_ID"} },
            { regex: /(?<=\s)as(?=\s)/, action: {"token":"AS"} },
            { regex: /(?<=\s)async(?=\s)/, action: {"token":"ASYNC"} },
            { regex: /[_a-zA-Z][\w]*/, action: { cases: { '@keywords': {"token":"keyword"}, '@default': {"token":"ID"} }} },
            { regex: /(?<!<\s*|\()\@[\w:\-\[\]]*/, action: { cases: { '@keywords': {"token":"keyword"}, '@default': {"token":"EVENT_ATTR_KEY"} }} },
            { regex: /\@\[[\w:\-\(\)\.]*?\]/, action: {"token":"EVENT_ATTR_KEY2"} },
            { regex: /-[\w\-]*/, action: {"token":"DATA_ATTR_KEY"} },
            { regex: /(((((((?<!<\s*|\()\@[\w:\-\[\]]*)|(\@\[[\w:\-\(\)\.]*?\]))|(-[\w\-]*))|([_a-zA-Z\-][\w\-]*?(?=-\w)[\-\w]+))|([_a-zA-Z][\w]*))(\$\{.+?\})?((?=\s*=\s*|\.|\s)))/, action: {"token":"ATTR_KEY"} },
            { regex: /@/, action: { cases: { '@keywords': {"token":"keyword"}, '@default': {"token":"AT"} }} },
            { regex: /"(\\.|[^"\\])*"|'(\\.|[^'\\])*'/, action: {"token":"string"} },
            { regex: /%\w+%/, action: {"token":"MACRO"} },
            { regex: /\$\{.+?\}/, action: {"token":"INTERPOLATION"} },
            { regex: /:synthetic-indent:/, action: {"token":"INDENT"} },
            { regex: /:synthetic-dedent:/, action: {"token":"DEDENT"} },
            { regex: /[_a-z\-&][\w\-&]*/, action: { cases: { '@keywords': {"token":"keyword"}, '@default': {"token":"CLASS_NAME"} }} },
            { regex: /\./, action: {"token":"DOT"} },
            { regex: /\(/, action: {"token":"L_PAREN"} },
            { regex: /\)/, action: {"token":"R_PAREN"} },
            { regex: /\[/, action: {"token":"L_BRAC"} },
            { regex: /\]/, action: {"token":"R_BRAC"} },
            { regex: /\|/, action: {"token":"PIPE"} },
            { regex: /!/, action: {"token":"EXC"} },
            { regex: /:/, action: {"token":"COLON"} },
            { include: '@whitespace' },
            { regex: /@symbols/, action: { cases: { '@operators': {"token":"operator"}, '@default': {"token":""} }} },
        ],
        whitespace: [
            { regex: /(?=\s*=\s*|\.|\s)/, action: {"token":"white"} },
            { regex: /(?<=\s)&(?=[\r\n]+)/, action: {"token":"comment"} },
            { regex: /(?<=\n\s+)\.(?=[\r\n]+)/, action: {"token":"comment"} },
            { regex: /[ \t]+/, action: {"token":"white"} },
            { regex: /\/\*/, action: {"token":"comment","next":"@comment"} },
            { regex: /\/\/\/[^\n\r]*/, action: {"token":"comment"} },
            { regex: /[\r\n]+/, action: {"token":"white"} },
        ],
        comment: [
            { regex: /[^/\*]+/, action: {"token":"comment"} },
            { regex: /\*\//, action: {"token":"comment","next":"@pop"} },
            { regex: /[/\*]/, action: {"token":"comment"} },
        ],
    }
};