/
line_length_help.rb
89 lines (71 loc) · 2.44 KB
/
line_length_help.rb
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# frozen_string_literal: true
module RuboCop
module Cop
# Help methods for determining if a line is too long.
module LineLengthHelp
private
def ignore_cop_directives?
config.for_cop('Layout/LineLength')['IgnoreCopDirectives']
end
def directive_on_source_line?(line_index)
source_line_number = line_index + processed_source.buffer.first_line
comment =
processed_source.comments
.detect { |e| e.location.line == source_line_number }
return false unless comment
comment.text.match(CommentConfig::COMMENT_DIRECTIVE_REGEXP)
end
def allow_uri?
config.for_cop('Layout/LineLength')['AllowURI']
end
def allowed_uri_position?(line, uri_range)
uri_range.begin < max_line_length &&
(uri_range.end == line_length(line) ||
uri_range.end == line_length(line) - 1)
end
def line_length(line)
line.length + indentation_difference(line)
end
def find_excessive_uri_range(line)
last_uri_match = match_uris(line).last
return nil unless last_uri_match
begin_position, end_position = last_uri_match.offset(0).map do |pos|
pos + indentation_difference(line)
end
return nil if begin_position < max_line_length &&
end_position < max_line_length
begin_position...end_position
end
def match_uris(string)
matches = []
string.scan(uri_regexp) do
matches << $LAST_MATCH_INFO if valid_uri?($LAST_MATCH_INFO[0])
end
matches
end
def indentation_difference(line)
return 0 unless tab_indentation_width
line.match(/^\t*/)[0].size * (tab_indentation_width - 1)
end
def tab_indentation_width
config.for_cop('Layout/IndentationStyle')['IndentationWidth'] ||
config.for_cop('Layout/IndentationWidth')['Width']
end
def uri_regexp
@uri_regexp ||=
URI::DEFAULT_PARSER
.make_regexp(config.for_cop('Layout/LineLength')['URISchemes'])
end
def valid_uri?(uri_ish_string)
URI.parse(uri_ish_string)
true
rescue URI::InvalidURIError, NoMethodError
false
end
def line_length_without_directive(line)
before_comment, = line.split(CommentConfig::COMMENT_DIRECTIVE_REGEXP)
before_comment.rstrip.length
end
end
end
end