Class: RuboCop::Cop::Style::ColonMethodCall

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/style/colon_method_call.rb

Overview

This cop checks for methods invoked via the :: operator instead of the . operator (like FileUtils::rmdir instead of FileUtils.rmdir).

Constant Summary collapse

MSG =
'Do not use `::` for method calls.'
JAVA_TYPES =
[:byte, :boolean, :byte, :short, :char,
:int, :long, :float, :double]
JAVA_TYPE_NODES =
JAVA_TYPES.map { |t| s(:send, s(:const, nil, :Java), t) }

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

#allowed_name(method_name) ⇒ Object


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# File 'lib/rubocop/cop/style/colon_method_call.rb', line 30

def allowed_name(method_name)
  method_name.match(/^[A-Z]/)
end

#autocorrect(node) ⇒ Object


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# File 'lib/rubocop/cop/style/colon_method_call.rb', line 34

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

#on_send(node) ⇒ Object


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# File 'lib/rubocop/cop/style/colon_method_call.rb', line 17

def on_send(node)
  # ignore Java interop code like Java::int
  return if JAVA_TYPE_NODES.include?(node)

  receiver, method_name, *_args = *node

  # discard methods with nil receivers and op methods(like [])
  return unless receiver && node.loc.dot && node.loc.dot.is?('::')
  return if allowed_name(method_name.to_s)

  add_offense(node, :dot)
end