Prism.languages.liquid = {
  comment: {
    pattern: /(^\{%\s*comment\s*%\})[\s\S]+(?=\{%\s*endcomment\s*%\}$)/,
    lookbehind: true,
  },
  delimiter: {
    pattern: /^\{(?:\{\{|[%\{])-?|-?(?:\}\}|[%\}])\}$/,
    alias: 'punctuation',
  },
  string: {
    pattern: /"[^"]*"|'[^']*'/,
    greedy: true,
  },
  keyword:
    /\b(?:as|assign|break|(?:end)?(?:capture|case|comment|for|form|if|paginate|raw|style|tablerow|unless)|continue|cycle|decrement|echo|else|elsif|in|include|increment|limit|liquid|offset|range|render|reversed|section|when|with)\b/,
  object:
    /\b(?:address|all_country_option_tags|article|block|blog|cart|checkout|collection|color|country|country_option_tags|currency|current_page|current_tags|customer|customer_address|date|discount_allocation|discount_application|external_video|filter|filter_value|font|forloop|fulfillment|generic_file|gift_card|group|handle|image|line_item|link|linklist|localization|location|measurement|media|metafield|model|model_source|order|page|page_description|page_image|page_title|part|policy|product|product_option|recommendations|request|robots|routes|rule|script|search|selling_plan|selling_plan_allocation|selling_plan_group|shipping_method|shop|shop_locale|sitemap|store_availability|tax_line|template|theme|transaction|unit_price_measurement|user_agent|variant|video|video_source)\b/,
  function: [
    {
      pattern: /(\|\s*)\w+/,
      lookbehind: true,
      alias: 'filter',
    },
    {
      // array functions
      pattern: /(\.\s*)(?:first|last|size)/,
      lookbehind: true,
    },
  ],
  boolean: /\b(?:false|nil|true)\b/,
  range: {
    pattern: /\.\./,
    alias: 'operator',
  },
  // https://github.com/Shopify/liquid/blob/698f5e0d967423e013f6169d9111bd969bd78337/lib/liquid/lexer.rb#L21
  number: /\b\d+(?:\.\d+)?\b/,
  operator: /[!=]=|<>|[<>]=?|[|?:=-]|\b(?:and|contains(?=\s)|or)\b/,
  punctuation: /[.,\[\]()]/,
  empty: {
    pattern: /\bempty\b/,
    alias: 'keyword',
  },
};

Prism.hooks.add('before-tokenize', function (env) {
  var liquidPattern =
    /\{%\s*comment\s*%\}[\s\S]*?\{%\s*endcomment\s*%\}|\{(?:%[\s\S]*?%|\{\{[\s\S]*?\}\}|\{[\s\S]*?\})\}/g;
  var insideRaw = false;

  Prism.languages['markup-templating'].buildPlaceholders(
    env,
    'liquid',
    liquidPattern,
    function (match) {
      var tagMatch = /^\{%-?\s*(\w+)/.exec(match);
      if (tagMatch) {
        var tag = tagMatch[1];
        if (tag === 'raw' && !insideRaw) {
          insideRaw = true;
          return true;
        } else if (tag === 'endraw') {
          insideRaw = false;
          return true;
        }
      }

      return !insideRaw;
    }
  );
});

Prism.hooks.add('after-tokenize', function (env) {
  Prism.languages['markup-templating'].tokenizePlaceholders(env, 'liquid');
});