require_relative "../spell_checker" module DidYouMean class MethodNameChecker attr_reader :method_name, :receiver NAMES_TO_EXCLUDE = { NilClass => nil.methods } NAMES_TO_EXCLUDE.default = [] # +MethodNameChecker::RB_RESERVED_WORDS+ is the list of reserved words in # Ruby that take an argument. Unlike # +VariableNameChecker::RB_RESERVED_WORDS+, these reserved words require # an argument, and a +NoMethodError+ is raised due to the presence of the # argument. # # The +MethodNameChecker+ will use this list to suggest a reversed word if # a +NoMethodError+ is raised and found closest matches. # # Also see +VariableNameChecker::RB_RESERVED_WORDS+. RB_RESERVED_WORDS = %i( alias case def defined? elsif end ensure for rescue super undef unless until when while yield ) def initialize(exception) @method_name = exception.name @receiver = exception.receiver @private_call = exception.respond_to?(:private_call?) ? exception.private_call? : false end def corrections @corrections ||= SpellChecker.new(dictionary: RB_RESERVED_WORDS + method_names).correct(method_name) - names_to_exclude end def method_names if Object === receiver method_names = receiver.methods + receiver.singleton_methods method_names += receiver.private_methods if @private_call method_names.uniq! method_names else [] end end def names_to_exclude Object === receiver ? NAMES_TO_EXCLUDE[receiver.class] : [] end end end