Class: RuboCop::Cop::Style::DigChain

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
CommentsHelp, DigHelp
Defined in:
lib/rubocop/cop/style/dig_chain.rb

Overview

Check for chained ‘dig` calls that can be collapsed into a single `dig`.

Examples:

# bad
x.dig(:foo).dig(:bar).dig(:baz)
x.dig(:foo, :bar).dig(:baz)
x.dig(:foo, :bar)&.dig(:baz)

# good
x.dig(:foo, :bar, :baz)

# good - `dig`s cannot be combined
x.dig(:foo).bar.dig(:baz)

Constant Summary collapse

MSG = 
'Use `%<replacement>s` instead of chaining.'
RESTRICT_ON_SEND = 
%i[dig].freeze

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

Methods included from DigHelp

#dig?, #single_argument_dig?

Methods included from CommentsHelp

#comments_contain_disables?, #comments_in_range, #contains_comments?, #source_range_with_comment

Instance Method Details

#on_send(node) ⇒ Object Also known as: on_csend 



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# File 'lib/rubocop/cop/style/dig_chain.rb', line 33

def on_send(node)
  return if ignored_node?(node)
  return unless node.loc.dot
  return unless dig?(node)

  range, arguments = inspect_chain(node)
  return if invalid_arguments?(arguments)
  return unless range

  register_offense(node, range, arguments)
end