reprism/src/languages/aspnet.js

Modular Syntax highlighting for the web

export default {
  language: 'aspnet',
  init: Prism => {
    Prism.languages.aspnet = Prism.languages.extend('markup', {
      'page-directive tag': {
        pattern: /<%\s*@.*%>/i,
        inside: {
          'page-directive tag': /<%\s*@\s*(?:Assembly|Control|Implements|Import|Master(?:Type)?|OutputCache|Page|PreviousPageType|Reference|Register)?|%>/i,
          rest: Prism.languages.markup.tag.inside,
        },
      },
      'directive tag': {
        pattern: /<%.*%>/i,
        inside: {
          'directive tag': /<%\s*?[$=%#:]{0,2}|%>/i,
          rest: Prism.languages.csharp,
        },
      },
    })
    // Regexp copied from prism-markup, with a negative look-ahead added
    Prism.languages.aspnet.tag.pattern = /<(?!%)\/?[^\s>\/]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s'">=]+))?)*\s*\/?>/i

    // match directives of attribute value foo="<% Bar %>"
    Prism.languages.insertBefore(
      'inside',
      'punctuation',
      {
        'directive tag': Prism.languages.aspnet['directive tag'],
      },
      Prism.languages.aspnet.tag.inside['attr-value']
    )

    Prism.languages.insertBefore('aspnet', 'comment', {
      'asp comment': /<%--[\s\S]*?--%>/,
    })

    // script runat="server" contains csharp, not javascript
    Prism.languages.insertBefore(
      'aspnet',
      Prism.languages.javascript ? 'script' : 'tag',
      {
        'asp script': {
          pattern: /(<script(?=.*runat=['"]?server['"]?)[\s\S]*?>)[\s\S]*?(?=<\/script>)/i,
          lookbehind: true,
          inside: Prism.languages.csharp || {},
        },
      }
    )
  },
}