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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
module Rouge
# @abstract
# A TemplateLexer is one that accepts a :parent option, to specify
# which language is being templated. The lexer class can specify its
# own default for the parent lexer, which is otherwise defaulted to
# HTML.
class TemplateLexer < RegexLexer
# the parent lexer - the one being templated.
def parent
return @parent if instance_variable_defined? :@parent
@parent = lexer_option(:parent) || Lexers::HTML.new(@options)
end
option :parent, "the parent language (default: html)"
start { parent.reset! }
end
end
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