class RuboCop::Cop::Style::OrAssignment

name ||= ‘Bozhidar’
# good - set name to ‘Bozhidar’, only if it’s nil or false
name = ‘Bozhidar’ unless name
# bad
end
name = ‘Bozhidar’
unless name
# bad
end
’Bozhidar’
else
name
name = if name
# bad
name = name ? name : ‘Bozhidar’
# bad
@example
This cop checks for potential usage of the ‘||=` operator.

def autocorrect(node) 

def autocorrect(node)
  if ternary_assignment?(node)
    variable, default = take_variable_and_default_from_ternary(node)
  else
    variable, default = take_variable_and_default_from_unless(node)
  end
  lambda do |corrector|
    corrector.replace(node.source_range,
                      "#{variable} ||= #{default.source}")
  end
end

def on_if(node) 

def on_if(node)
  return unless unless_assignment?(node)
  add_offense(node)
end

def on_lvasgn(node) 

def on_lvasgn(node)
  return unless ternary_assignment?(node)
  add_offense(node)
end

def take_variable_and_default_from_ternary(node) 

def take_variable_and_default_from_ternary(node)
  variable, if_statement = *node
  [variable, if_statement.else_branch]
end

def take_variable_and_default_from_unless(node) 

def take_variable_and_default_from_unless(node)
  variable, default = *node.if_branch
  [variable, default]
end