lexers/rhtml.lua

   1 -- Copyright 2006-2015 Mitchell mitchell.att.foicica.com. See LICENSE.
   2 -- RHTML 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 = 'rhtml'}
   9
  10 -- Embedded in HTML.
  11 local html = l.load('html')
  12
  13 -- Embedded Ruby.
  14 local ruby = l.load('rails')
  15 local ruby_start_rule = token('rhtml_tag', '<%' * P('=')^-1)
  16 local ruby_end_rule = token('rhtml_tag', '%>')
  17 l.embed_lexer(html, ruby, ruby_start_rule, ruby_end_rule)
  18
  19 M._tokenstyles = {
  20   rhtml_tag = l.STYLE_EMBEDDED
  21 }
  22
  23 local _foldsymbols = html._foldsymbols
  24 _foldsymbols._patterns[#_foldsymbols._patterns + 1] = '<%%'
  25 _foldsymbols._patterns[#_foldsymbols._patterns + 1] = '%%>'
  26 _foldsymbols.rhtml_tag = {['<%'] = 1, ['%>'] = -1}
  27 M._foldsymbols = _foldsymbols
  28
  29 return M