Class: RuboCop::Cop::Lint::AmbiguousAssignment

Inherits:
Base
  • Object
show all
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/lint/ambiguous_assignment.rb

Overview

This cop checks for mistyped shorthand assignments.

Examples:

# bad
x =- y
x =+ y
x =* y
x =! y

# good
x -= y # or x = -y
x += y # or x = +y
x *= y # or x = *y
x != y # or x = !y

Constant Summary collapse

MSG =
'Suspicious assignment detected. Did you mean `%<op>s`?'
SIMPLE_ASSIGNMENT_TYPES =
%i[lvasgn ivasgn cvasgn gvasgn casgn].freeze
MISTAKES =
{ '=-' => '-=', '=+' => '+=', '=*' => '*=', '=!' => '!=' }.freeze

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #parse, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from ExcludeLimit

#exclude_limit

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

silence_warnings

Constructor Details

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

Instance Method Details

#on_asgn(node) ⇒ Object


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# File 'lib/rubocop/cop/lint/ambiguous_assignment.rb', line 30

def on_asgn(node)
  return unless (rhs = rhs(node))

  range = range_between(node.loc.operator.end_pos - 1, rhs.source_range.begin_pos + 1)
  source = range.source
  return unless MISTAKES.key?(source)

  add_offense(range, message: format(MSG, op: MISTAKES[source]))
end