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Versions: 11
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Stored size: 1.83 KB
Contents
# -*- coding: utf-8; frozen_string_literal: true -*-
#
#--
# Copyright (C) 2009-2019 Thomas Leitner <t_leitner@gmx.at>
#
# This file is part of kramdown which is licensed under the MIT.
#++
#
module Kramdown
module Parser
class Kramdown
EMPHASIS_START = /(?:\*\*?|__?)/
# Parse the emphasis at the current location.
def parse_emphasis
start_line_number = @src.current_line_number
saved_pos = @src.save_pos
result = @src.scan(EMPHASIS_START)
element = (result.length == 2 ? :strong : :em)
type = result[0..0]
if (type == '_' && @src.pre_match =~ /[[:alpha:]]-?[[:alpha:]]*\z/) || @src.check(/\s/) ||
@tree.type == element || @stack.any? {|el, _| el.type == element }
add_text(result)
return
end
sub_parse = lambda do |delim, elem|
el = Element.new(elem, nil, nil, location: start_line_number)
stop_re = /#{Regexp.escape(delim)}/
found = parse_spans(el, stop_re) do
(@src.pre_match[-1, 1] !~ /\s/) &&
(elem != :em || !@src.match?(/#{Regexp.escape(delim * 2)}(?!#{Regexp.escape(delim)})/)) &&
(type != '_' || !@src.match?(/#{Regexp.escape(delim)}[[:alnum:]]/)) && !el.children.empty?
end
[found, el, stop_re]
end
found, el, stop_re = sub_parse.call(result, element)
if !found && element == :strong && @tree.type != :em
@src.revert_pos(saved_pos)
@src.pos += 1
found, el, stop_re = sub_parse.call(type, :em)
end
if found
@src.scan(stop_re)
@tree.children << el
else
@src.revert_pos(saved_pos)
@src.pos += result.length
add_text(result)
end
end
define_parser(:emphasis, EMPHASIS_START, '\*|_')
end
end
end
Version data entries
11 entries across 11 versions & 4 rubygems