JezK
Edit File: did_you_mean.rb
require_relative "did_you_mean/version" require_relative "did_you_mean/core_ext/name_error" require_relative "did_you_mean/spell_checker" require_relative 'did_you_mean/spell_checkers/name_error_checkers' require_relative 'did_you_mean/spell_checkers/method_name_checker' require_relative 'did_you_mean/spell_checkers/key_error_checker' require_relative 'did_you_mean/spell_checkers/null_checker' require_relative 'did_you_mean/formatters/plain_formatter' require_relative 'did_you_mean/tree_spell_checker' # The +DidYouMean+ gem adds functionality to suggest possible method/class # names upon errors such as +NameError+ and +NoMethodError+. In Ruby 2.3 or # later, it is automatically activated during startup. # # @example # # methosd # # => NameError: undefined local variable or method `methosd' for main:Object # # Did you mean? methods # # method # # OBject # # => NameError: uninitialized constant OBject # # Did you mean? Object # # @full_name = "Yuki Nishijima" # first_name, last_name = full_name.split(" ") # # => NameError: undefined local variable or method `full_name' for main:Object # # Did you mean? @full_name # # @@full_name = "Yuki Nishijima" # @@full_anme # # => NameError: uninitialized class variable @@full_anme in Object # # Did you mean? @@full_name # # full_name = "Yuki Nishijima" # full_name.starts_with?("Y") # # => NoMethodError: undefined method `starts_with?' for "Yuki Nishijima":String # # Did you mean? start_with? # # hash = {foo: 1, bar: 2, baz: 3} # hash.fetch(:fooo) # # => KeyError: key not found: :fooo # # Did you mean? :foo # # # == Disabling +did_you_mean+ # # Occasionally, you may want to disable the +did_you_mean+ gem for e.g. # debugging issues in the error object itself. You can disable it entirely by # specifying +--disable-did_you_mean+ option to the +ruby+ command: # # $ ruby --disable-did_you_mean -e "1.zeor?" # -e:1:in `<main>': undefined method `zeor?' for 1:Integer (NameError) # # When you do not have direct access to the +ruby+ command (e.g. # +rails console+, +irb+), you could applyoptions using the +RUBYOPT+ # environment variable: # # $ RUBYOPT='--disable-did_you_mean' irb # irb:0> 1.zeor? # # => NoMethodError (undefined method `zeor?' for 1:Integer) # # # == Getting the original error message # # Sometimes, you do not want to disable the gem entirely, but need to get the # original error message without suggestions (e.g. testing). In this case, you # could use the +#original_message+ method on the error object: # # no_method_error = begin # 1.zeor? # rescue NoMethodError => error # error # end # # no_method_error.message # # => NoMethodError (undefined method `zeor?' for 1:Integer) # # Did you mean? zero? # # no_method_error.original_message # # => NoMethodError (undefined method `zeor?' for 1:Integer) # module DidYouMean # Map of error types and spell checker objects. SPELL_CHECKERS = Hash.new(NullChecker) # Adds +DidYouMean+ functionality to an error using a given spell checker def self.correct_error(error_class, spell_checker) SPELL_CHECKERS[error_class.name] = spell_checker error_class.prepend(Correctable) unless error_class < Correctable end correct_error NameError, NameErrorCheckers correct_error KeyError, KeyErrorChecker correct_error NoMethodError, MethodNameChecker # Returns the currenctly set formatter. By default, it is set to +DidYouMean::Formatter+. def self.formatter @@formatter end # Updates the primary formatter used to format the suggestions. def self.formatter=(formatter) @@formatter = formatter end self.formatter = PlainFormatter.new end