Class: RuboCop::Cop::Style::Proc

Inherits:

Cop

• Object
• Cop
• RuboCop::Cop::Style::Proc

Defined in:

lib/rubocop/cop/style/proc.rb

Overview

This cops checks for uses of Proc.new where Kernel#proc would be more appropriate.

Constant Summary

MSG =

'Use `proc` instead of `Proc.new`.'

TARGET =

s(:send, s(:const, nil, :Proc), :new)

Constants included from Util

Util::ASGN_NODES, Util::EQUALS_ASGN_NODES, Util::OPERATOR_METHODS, Util::PROC_NEW_NODE, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary

• #autocorrect(node) ⇒ Object
• #on_block(node) ⇒ Object

Methods inherited from Cop

#add_offense, all, #autocorrect?, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, cop_name_with_namespace, cop_type, #debug?, #display_cop_names?, inherited, #initialize, #join_force?, lint?, #message, non_rails, qualified_cop_name, rails?, #relevant_file?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, block_length, command?, comment_line?, const_name, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, numeric_range_size, on_node, operator?, parentheses?, proc?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, within_node?

Methods included from PathUtil

issue_deprecation_warning, match_path?, relative_path

Constructor Details

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

Instance Method Details

#autocorrect(node) ⇒ Object

# File 'lib/rubocop/cop/style/proc.rb', line 24

def autocorrect(node)
  @corrections << lambda do |corrector|
    corrector.replace(node.loc.expression, 'proc')
  end
end

#on_block(node) ⇒ Object

# File 'lib/rubocop/cop/style/proc.rb', line 13

def on_block(node)
  # We're looking for
  # (block
  #   (send
  #     (const nil :Proc) :new)
  #   ...)
  block_method, = *node

  add_offense(block_method, :expression) if block_method == TARGET
end