refractor/lang/rust.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

'use strict';

module.exports = rust;
rust.displayName = 'rust';
rust.aliases = [];
function rust(Prism) {
  /* TODO
Add support for Markdown notation inside doc comments
Add support for nested block comments...
Match closure params even when not followed by dash or brace
Add better support for macro definition
*/
  Prism.languages.rust = {
    comment: [
      {
        pattern: /(^|[^\\])\/\*[\s\S]*?\*\//,
        lookbehind: true
      },
      {
        pattern: /(^|[^\\:])\/\/.*/,
        lookbehind: true
      }
    ],
    string: [
      {
        pattern: /b?r(#*)"(?:\\.|(?!"\1)[^\\\r\n])*"\1/,
        greedy: true
      },
      {
        pattern: /b?("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
        greedy: true
      }
    ],
    keyword: /\b(?:abstract|alignof|as|be|box|break|const|continue|crate|do|else|enum|extern|false|final|fn|for|if|impl|in|let|loop|match|mod|move|mut|offsetof|once|override|priv|pub|pure|ref|return|sizeof|static|self|struct|super|true|trait|type|typeof|unsafe|unsized|use|virtual|where|while|yield)\b/,
    attribute: {
      pattern: /#!?\[.+?\]/,
      greedy: true,
      alias: 'attr-name'
    },
    function: [
      /\w+(?=\s*\()/,
      // Macros can use parens or brackets
      /\w+!(?=\s*\(|\[)/
    ],
    'macro-rules': {
      pattern: /\w+!/,
      alias: 'function'
    },
    // Hex, oct, bin, dec numbers with visual separators and type suffix
    number: /\b-?(?:0x[\dA-Fa-f](?:_?[\dA-Fa-f])*|0o[0-7](?:_?[0-7])*|0b[01](?:_?[01])*|(\d(?:_?\d)*)?\.?\d(?:_?\d)*(?:[Ee][+-]?\d+)?)(?:_?(?:[iu](?:8|16|32|64)?|f32|f64))?\b/,
    // Closure params should not be confused with bitwise OR |
    'closure-params': {
      pattern: /\|[^|]*\|(?=\s*[{-])/,
      inside: {
        punctuation: /[|:,]/,
        operator: /[&*]/
      }
    },
    punctuation: /[{}[\];(),:]|\.+|->/,
    operator: /[-+*\/%!^=]=?|@|&[&=]?|\|[|=]?|<<?=?|>>?=?/
  };
}