reprism/src/languages/vhdl.js

Modular Syntax highlighting for the web

export default {
  language: 'vhdl',
  init: Prism => {
    Prism.languages.vhdl = {
      comment: /--.+/,
      // support for all logic vectors
      'vhdl-vectors': {
        pattern: /\b[oxb]"[\da-f_]+"|"[01uxzwlh-]+"/i,
        alias: 'number',
      },
      // support for operator overloading included
      'quoted-function': {
        pattern: /"\S+?"(?=\()/,
        alias: 'function',
      },
      string: /"(?:[^\\"\r\n]|\\(?:\r\n|[\s\S]))*"/,
      constant: /\b(?:use|library)\b/i,
      // support for predefined attributes included
      keyword: /\b(?:'active|'ascending|'base|'delayed|'driving|'driving_value|'event|'high|'image|'instance_name|'last_active|'last_event|'last_value|'left|'leftof|'length|'low|'path_name|'pos|'pred|'quiet|'range|'reverse_range|'right|'rightof|'simple_name|'stable|'succ|'transaction|'val|'value|access|after|alias|all|architecture|array|assert|attribute|begin|block|body|buffer|bus|case|component|configuration|constant|disconnect|downto|else|elsif|end|entity|exit|file|for|function|generate|generic|group|guarded|if|impure|in|inertial|inout|is|label|library|linkage|literal|loop|map|new|next|null|of|on|open|others|out|package|port|postponed|procedure|process|pure|range|record|register|reject|report|return|select|severity|shared|signal|subtype|then|to|transport|type|unaffected|units|until|use|variable|wait|when|while|with)\b/i,
      boolean: /\b(?:true|false)\b/i,
      function: /\w+(?=\()/,
      // decimal, based, physical, and exponential numbers supported
      number: /'[01uxzwlh-]'|\b(?:\d+#[\da-f_.]+#|\d[\d_.]*)(?:e[-+]?\d+)?/i,
      operator: /[<>]=?|:=|[-+*/&=]|\b(?:abs|not|mod|rem|sll|srl|sla|sra|rol|ror|and|or|nand|xnor|xor|nor)\b/i,
      punctuation: /[{}[\];(),.:]/,
    }
  },
}