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Versions: 11
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Contents
# frozen_string_literal: true
module RuboCop
module Cop
# Common functionality for modifier cops.
module StatementModifier
include IfNode
def single_line_as_modifier?(node)
cond, body, = if_node_parts(node)
return false if non_eligible_node?(node) || non_eligible_body?(body) ||
non_eligible_condition?(cond)
modifier_fits_on_single_line?(node)
end
def non_eligible_node?(node)
line_count(node) > 3 || commented?(node.loc.end)
end
def non_eligible_body?(body)
return true unless body
body.begin_type? || empty_body?(body) || commented?(body.source_range)
end
def non_eligible_condition?(condition)
condition.each_node.any?(&:lvasgn_type?)
end
def modifier_fits_on_single_line?(node)
cond, body, = if_node_parts(node)
body_length = body_length(body)
length_in_modifier_form(node, cond, body_length) <= max_line_length
end
def length_in_modifier_form(node, cond, body_length)
indentation = node.loc.keyword.column
kw_length = node.loc.keyword.size
cond_length = cond.source_range.size
space = 1
indentation + body_length + space + kw_length + space + cond_length
end
def max_line_length
cop_config['MaxLineLength'] ||
config.for_cop('Metrics/LineLength')['Max']
end
def line_count(node)
node.source.lines.grep(/\S/).size
end
def empty_body?(body)
body_length(body).zero?
end
def body_length(body)
body.source_range ? body.source_range.size : 0
end
def commented?(source)
comment_lines.include?(source.line)
end
def comment_lines
@comment_lines ||= processed_source.comments.map { |c| c.location.line }
end
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems