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path: root/public/prism/prism-tt2.js
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(function (Prism) {
  Prism.languages.tt2 = Prism.languages.extend('clike', {
    comment: /#.*|\[%#[\s\S]*?%\]/,
    keyword:
      /\b(?:BLOCK|CALL|CASE|CATCH|CLEAR|DEBUG|DEFAULT|ELSE|ELSIF|END|FILTER|FINAL|FOREACH|GET|IF|IN|INCLUDE|INSERT|LAST|MACRO|META|NEXT|PERL|PROCESS|RAWPERL|RETURN|SET|STOP|SWITCH|TAGS|THROW|TRY|UNLESS|USE|WHILE|WRAPPER)\b/,
    punctuation: /[[\]{},()]/,
  });

  Prism.languages.insertBefore('tt2', 'number', {
    operator: /=[>=]?|!=?|<=?|>=?|&&|\|\|?|\b(?:and|not|or)\b/,
    variable: {
      pattern: /\b[a-z]\w*(?:\s*\.\s*(?:\d+|\$?[a-z]\w*))*\b/i,
    },
  });

  Prism.languages.insertBefore('tt2', 'keyword', {
    delimiter: {
      pattern: /^(?:\[%|%%)-?|-?%\]$/,
      alias: 'punctuation',
    },
  });

  Prism.languages.insertBefore('tt2', 'string', {
    'single-quoted-string': {
      pattern: /'[^\\']*(?:\\[\s\S][^\\']*)*'/,
      greedy: true,
      alias: 'string',
    },
    'double-quoted-string': {
      pattern: /"[^\\"]*(?:\\[\s\S][^\\"]*)*"/,
      greedy: true,
      alias: 'string',
      inside: {
        variable: {
          pattern: /\$(?:[a-z]\w*(?:\.(?:\d+|\$?[a-z]\w*))*)/i,
        },
      },
    },
  });

  // The different types of TT2 strings "replace" the C-like standard string
  delete Prism.languages.tt2.string;

  Prism.hooks.add('before-tokenize', function (env) {
    var tt2Pattern = /\[%[\s\S]+?%\]/g;
    Prism.languages['markup-templating'].buildPlaceholders(
      env,
      'tt2',
      tt2Pattern
    );
  });

  Prism.hooks.add('after-tokenize', function (env) {
    Prism.languages['markup-templating'].tokenizePlaceholders(env, 'tt2');
  });
})(Prism);