#
# Context free grammar of tokens (terminal
# nodes) for the Emerald language.
#
grammar Tokens
  rule base_keyword
    'images' / 'metas' / 'scripts' / 'styles'
  end

  rule special_keyword
    'images' / 'scripts' / 'styles'
  end

  rule tag
    [a-z] [a-z1-9]*
  end

  rule attr
    [a-z\-_]+
  end

  rule event
    'onabort' / 'onclick' / 'onhover' / 'onbeforeprint' / 'onbeforeunload'
  end

  rule equals
    '='
  end

  rule comma
    ','
  end

  rule lparen
    '('
  end

  rule rparen
    ')'
  end

  rule lbrace
    "{"
  end

  rule rbrace
    "}"
  end

  rule space
    ' '
  end

  rule newline
    [\n] <Node>
  end
end