Class: Rubocop::Cop::Style::RedundantException

Inherits:

Cop

• Object
• Cop
• Rubocop::Cop::Style::RedundantException

Defined in:

lib/rubocop/cop/style/redundant_exception.rb

Overview

This cop checks for RuntimeError as the argument of raise/fail.

Currently it checks for code like this:

Examples:

raise RuntimeError, 'message'

Constant Summary

MSG =

'Redundant `RuntimeError` argument can be removed.'

TARGET_NODE =

s(:const, nil, :RuntimeError)

Constants inherited from Cop

Cop::OPERATOR_METHODS

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offences, #processed_source

Instance Method Summary

• #on_send(node) ⇒ Object

Methods inherited from Cop

#add_offence, all, #autocorrect?, #convention, #cop_config, cop_name, #cop_name, cop_type, #debug?, #ignore_node, inherited, #initialize, lint?, #message, non_rails, rails?, style?, #support_autocorrect?, #warning

Constructor Details

This class inherits a constructor from Rubocop::Cop::Cop

Instance Method Details

#on_send(node) ⇒ Object

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

def on_send(node)
  return unless command?(:raise, node) || command?(:fail, node)

  _receiver, _selector, *args = *node

  return unless args.size == 2

  first_arg, = *args

  convention(first_arg, :expression) if first_arg == TARGET_NODE
end