class RuboCop::Cop::Lint::RedundantStringCoercion
Checks for string conversion in string interpolation, ‘print`, `puts`, and `warn` arguments, which is redundant.
@example
# bad "result is #{something.to_s}" print something.to_s puts something.to_s warn something.to_s # good "result is #{something}" print something puts something warn something
Constants
- MSG_DEFAULT
- MSG_SELF
- RESTRICT_ON_SEND
Public Instance Methods
Source
# File lib/rubocop/cop/lint/redundant_string_coercion.rb, line 34 def on_interpolation(begin_node) final_node = begin_node.children.last return unless to_s_without_args?(final_node) register_offense(final_node, 'interpolation') end
Source
# File lib/rubocop/cop/lint/redundant_string_coercion.rb, line 42 def on_send(node) return if node.receiver node.each_child_node(:call) do |child| next if !child.method?(:to_s) || child.arguments.any? register_offense(child, "`#{node.method_name}`") end end
Private Instance Methods
Source
# File lib/rubocop/cop/lint/redundant_string_coercion.rb, line 54 def register_offense(node, context) receiver = node.receiver template = receiver ? MSG_DEFAULT : MSG_SELF message = format(template, context: context) add_offense(node.loc.selector, message: message) do |corrector| replacement = receiver ? receiver.source : 'self' corrector.replace(node, replacement) end end