Module: RuboCop::Cop::Style::ConditionalAssignmentHelper

Included in:
CaseCorrector, ConditionalAssignment, IfCorrector, TernaryCorrector, UnlessCorrector
Defined in:
lib/rubocop/cop/style/conditional_assignment.rb

Overview

Helper module to provide common methods to classes needed for the ConditionalAssignment Cop.

Constant Summary collapse

EQUAL = 
'='.freeze
END_ALIGNMENT = 
'Lint/EndAlignment'.freeze
ALIGN_WITH = 
'EnforcedStyleAlignWith'.freeze
KEYWORD = 
'keyword'.freeze

Instance Method Summary collapse

Instance Method Details

#expand_elses(branch) ⇒ Object

elsif branches show up in the node as an else. We need to recursively iterate over all else branches and consider all but the last node an elsif branch and consider the last node the actual else branch.



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# File 'lib/rubocop/cop/style/conditional_assignment.rb', line 18

def expand_elses(branch)
  elsif_branches = expand_elsif(branch)
  else_branch = elsif_branches.any? ? elsif_branches.pop : branch
  [elsif_branches, else_branch]
end

#expand_when_branches(when_branches) ⇒ Object

when nodes contain the entire branch including the condition. We only need the contents of the branch, not the condition.



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# File 'lib/rubocop/cop/style/conditional_assignment.rb', line 26

def expand_when_branches(when_branches)
  when_branches.map { |branch| branch.children[1] }
end

#indent(cop, source) ⇒ Object 



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# File 'lib/rubocop/cop/style/conditional_assignment.rb', line 53

def indent(cop, source)
  if cop.config[END_ALIGNMENT] &&
     cop.config[END_ALIGNMENT][ALIGN_WITH] &&
     cop.config[END_ALIGNMENT][ALIGN_WITH] == KEYWORD
    ' ' * source.length
  else
    ''
  end
end

#lhs(node) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/rubocop/cop/style/conditional_assignment.rb', line 34

def lhs(node) # rubocop:disable Metrics/MethodLength
  case node.type
  when :send
    lhs_for_send(node)
  when :op_asgn
    "#{node.children[0].source} #{node.children[1]}= "
  when :and_asgn
    "#{node.children[0].source} &&= "
  when :or_asgn
    "#{node.children[0].source} ||= "
  when :casgn
    "#{node.children[1]} = "
  when *ConditionalAssignment::VARIABLE_ASSIGNMENT_TYPES
    "#{node.children[0]} = "
  else
    node.source
  end
end

#tail(branch) ⇒ Object 



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# File 'lib/rubocop/cop/style/conditional_assignment.rb', line 30

def tail(branch)
  branch.begin_type? ? [*branch].last : branch
end