refractor/lang/twig.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

'use strict';

module.exports = twig;
twig.displayName = 'twig';
twig.aliases = [];
function twig(Prism) {
  Prism.languages.twig = {
    comment: /\{#[\s\S]*?#\}/,
    tag: {
      pattern: /\{\{[\s\S]*?\}\}|\{%[\s\S]*?%\}/,
      inside: {
        ld: {
          pattern: /^(?:\{\{-?|\{%-?\s*\w+)/,
          inside: {
            punctuation: /^(?:\{\{|\{%)-?/,
            keyword: /\w+/
          }
        },
        rd: {
          pattern: /-?(?:%\}|\}\})$/,
          inside: {
            punctuation: /.*/
          }
        },
        string: {
          pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
          inside: {
            punctuation: /^['"]|['"]$/
          }
        },
        keyword: /\b(?:even|if|odd)\b/,
        boolean: /\b(?:true|false|null)\b/,
        number: /\b-?(?:0x[\dA-Fa-f]+|\d*\.?\d+(?:[Ee][-+]?\d+)?)\b/,
        operator: [
          {
            pattern: /(\s)(?:and|b-and|b-xor|b-or|ends with|in|is|matches|not|or|same as|starts with)(?=\s)/,
            lookbehind: true
          },
          /[=<>]=?|!=|\*\*?|\/\/?|\?:?|[-+~%|]/
        ],
        property: /\b[a-zA-Z_]\w*\b/,
        punctuation: /[()\[\]{}:.,]/
      }
    },
    // The rest can be parsed as HTML
    other: {
      // We want non-blank matches
      pattern: /\S(?:[\s\S]*\S)?/,
      inside: Prism.languages.markup
    }
  };
}