Class: RuboCop::Cop::Lint::ParenthesesAsGroupedExpression

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

Overview

Checks for space between a the name of a called method and a left parenthesis.

puts (x + y)

Constant Summary collapse

MSG =
'`(...)` interpreted as grouped expression.'

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

#on_send(node) ⇒ Object


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# File 'lib/rubocop/cop/lint/parentheses_as_grouped_expression.rb', line 15

def on_send(node)
  _receiver, method_name, args = *node
  return if operator?(method_name) || method_name.to_s.end_with?('=')
  return unless args && args.loc.expression.source.start_with?('(')

  space_length = spaces_before_left_parenthesis(node)
  return unless space_length > 0
  expr = args.loc.expression
  space_range =
    Parser::Source::Range.new(expr.source_buffer,
                              expr.begin_pos - space_length,
                              expr.begin_pos)

  add_offense(nil, space_range)
end