Class: RuboCop::Cop::Lint::SpaceBeforeFirstArg

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/lint/space_before_first_arg.rb

Overview

Checks for space between a method name and the first argument for method calls without parentheses.

Examples:


something?x
something!x

Constant Summary collapse

MSG =
'Put space between the method name and the first argument.'

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 collapse

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_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(range) ⇒ Object


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# File 'lib/rubocop/cop/lint/space_before_first_arg.rb', line 38

def autocorrect(range)
  @corrections << ->(corrector) { corrector.insert_before(range, ' ') }
end

#on_send(node) ⇒ Object


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# File 'lib/rubocop/cop/lint/space_before_first_arg.rb', line 17

def on_send(node)
  return if parentheses?(node)

  _receiver, method_name, *args = *node
  return if args.empty?
  return if operator?(method_name)
  return if method_name.to_s.end_with?('=')

  # Setter calls with parentheses are parsed this way. The parentheses
  # belong to the argument, not the send node.
  return if args.first.type == :begin

  arg1 = args.first.loc.expression
  arg1_with_space = range_with_surrounding_space(arg1, :left)
  space = Parser::Source::Range.new(arg1.source_buffer,
                                    arg1_with_space.begin_pos,
                                    arg1.begin_pos)

  add_offense(space, arg1) if arg1_with_space.source =~ /\A\S/
end