128 lines
3.0 KiB
Ruby
128 lines
3.0 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module RuboCop
|
|
module Cop
|
|
# Ensures a line break around conditional blocks.
|
|
#
|
|
# @example
|
|
# # bad
|
|
# do_something
|
|
# if condition
|
|
# do_extra_stuff
|
|
# end
|
|
# do_something_more
|
|
#
|
|
# # good
|
|
# do_something
|
|
#
|
|
# if condition
|
|
# do_extra_stuff
|
|
# end
|
|
#
|
|
# do_something_more
|
|
#
|
|
# # bad
|
|
# do_something
|
|
# unless condition
|
|
# do_extra_stuff
|
|
# end
|
|
#
|
|
# do_something_more
|
|
#
|
|
# # good
|
|
# def a_method
|
|
# if condition
|
|
# do_something
|
|
# end
|
|
# end
|
|
#
|
|
# # good
|
|
# on_block do
|
|
# if condition
|
|
# do_something
|
|
# end
|
|
# end
|
|
class LineBreakAroundConditionalBlock < RuboCop::Cop::Cop
|
|
include RangeHelp
|
|
|
|
MSG = 'Add a line break around conditional blocks'
|
|
|
|
def on_if(node)
|
|
# This cop causes errors in haml files, so let's skip those
|
|
return if in_haml?(node)
|
|
return if node.single_line?
|
|
return unless node.if? || node.unless?
|
|
|
|
add_offense(node, location: :expression, message: MSG) unless previous_line_valid?(node)
|
|
add_offense(node, location: :expression, message: MSG) unless last_line_valid?(node)
|
|
end
|
|
|
|
def autocorrect(node)
|
|
lambda do |corrector|
|
|
line = range_by_whole_lines(node.source_range)
|
|
unless previous_line_valid?(node)
|
|
corrector.insert_before(line, "\n")
|
|
end
|
|
|
|
unless last_line_valid?(node)
|
|
corrector.insert_after(line, "\n")
|
|
end
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def previous_line_valid?(node)
|
|
previous_line(node).empty? ||
|
|
start_clause_line?(previous_line(node)) ||
|
|
block_start?(previous_line(node)) ||
|
|
begin_line?(previous_line(node)) ||
|
|
assignment_line?(previous_line(node))
|
|
end
|
|
|
|
def last_line_valid?(node)
|
|
last_line(node).empty? ||
|
|
end_line?(last_line(node)) ||
|
|
end_clause_line?(last_line(node))
|
|
end
|
|
|
|
def previous_line(node)
|
|
processed_source[node.loc.line - 2]
|
|
end
|
|
|
|
def last_line(node)
|
|
processed_source[node.loc.last_line]
|
|
end
|
|
|
|
def start_clause_line?(line)
|
|
line =~ /^\s*(def|=end|#|module|class|if|unless|else|elsif|ensure|when)/
|
|
end
|
|
|
|
def end_clause_line?(line)
|
|
line =~ /^\s*(#|rescue|else|elsif|when)/
|
|
end
|
|
|
|
def begin_line?(line)
|
|
# an assignment followed by a begin or ust a begin
|
|
line =~ /^\s*(@?(\w|\|+|=|\[|\]|\s)+begin|begin)/
|
|
end
|
|
|
|
def assignment_line?(line)
|
|
line =~ /^\s*.*=/
|
|
end
|
|
|
|
def block_start?(line)
|
|
line.match(/ (do|{)( \|.*?\|)?\s?$/)
|
|
end
|
|
|
|
def end_line?(line)
|
|
line =~ /^\s*(end|})/
|
|
end
|
|
|
|
def in_haml?(node)
|
|
node.location.expression.source_buffer.name.end_with?('.haml.rb')
|
|
end
|
|
end
|
|
end
|
|
end
|