lexers/asp.lua

   1 -- Copyright 2006-2016 Mitchell mitchell.att.foicica.com. See LICENSE.
   2 -- ASP LPeg lexer.
   3
   4 local l = require('lexer')
   5 local token, word_match = l.token, l.word_match
   6 local P, R, S = lpeg.P, lpeg.R, lpeg.S
   7
   8 local M = {_NAME = 'asp'}
   9
  10 -- Embedded in HTML.
  11 local html = l.load('html')
  12
  13 -- Embedded VB.
  14 local vb = l.load('vb')
  15 local vb_start_rule = token('asp_tag', '<%' * P('=')^-1)
  16 local vb_end_rule = token('asp_tag', '%>')
  17 l.embed_lexer(html, vb, vb_start_rule, vb_end_rule)
  18
  19 -- Embedded VBScript.
  20 local vbs = l.load('vbscript')
  21 local script_element = word_match({'script'}, nil, html.case_insensitive_tags)
  22 local vbs_start_rule = #(P('<') * script_element * (P(function(input, index)
  23   if input:find('^%s+language%s*=%s*(["\'])vbscript%1', index) or
  24      input:find('^%s+type%s*=%s*(["\'])text/vbscript%1', index) then
  25     return index
  26   end
  27 end) + '>')) * html.embed_start_tag -- <script language="vbscript">
  28 local vbs_end_rule = #('</' * script_element * l.space^0 * '>') *
  29                      html.embed_end_tag -- </script>
  30 l.embed_lexer(html, vbs, vbs_start_rule, vbs_end_rule)
  31
  32 M._tokenstyles = {
  33   asp_tag = l.STYLE_EMBEDDED
  34 }
  35
  36 local _foldsymbols = html._foldsymbols
  37 _foldsymbols._patterns[#_foldsymbols._patterns + 1] = '<%%'
  38 _foldsymbols._patterns[#_foldsymbols._patterns + 1] = '%%>'
  39 _foldsymbols.asp_tag = {['<%'] = 1, ['%>'] = -1}
  40 M._foldsymbols = _foldsymbols
  41
  42 return M