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# frozen-string-literal: true
require_relative '../../did_you_mean'
module DidYouMean
module Experimental #:nodoc:
class IvarNameCheckerBuilder #:nodoc:
attr_reader :original_checker
def initialize(original_checker) #:nodoc:
@original_checker = original_checker
end
def new(no_method_error) #:nodoc:
IvarNameChecker.new(no_method_error, original_checker: @original_checker)
end
end
class IvarNameChecker #:nodoc:
REPLS = {
"(irb)" => -> { Readline::HISTORY.to_a.last }
}
TRACE = TracePoint.trace(:raise) do |tp|
e = tp.raised_exception
if SPELL_CHECKERS.include?(e.class.to_s) && !e.instance_variable_defined?(:@frame_binding)
e.instance_variable_set(:@frame_binding, tp.binding)
end
end
attr_reader :original_checker
def initialize(no_method_error, original_checker: )
@original_checker = original_checker.new(no_method_error)
@location = no_method_error.backtrace_locations.first
@ivar_names = no_method_error.frame_binding.receiver.instance_variables
no_method_error.remove_instance_variable(:@frame_binding)
end
def corrections
original_checker.corrections + ivar_name_corrections
end
def ivar_name_corrections
@ivar_name_corrections ||= SpellChecker.new(dictionary: @ivar_names).correct(receiver_name.to_s)
end
private
def receiver_name
return unless @original_checker.receiver.nil?
abs_path = @location.absolute_path
lineno = @location.lineno
/@(\w+)*\.#{@original_checker.method_name}/ =~ line(abs_path, lineno).to_s && $1
end
def line(abs_path, lineno)
if REPLS[abs_path]
REPLS[abs_path].call
elsif File.exist?(abs_path)
File.open(abs_path) do |file|
file.detect { file.lineno == lineno }
end
end
end
end
end
NameError.send(:attr, :frame_binding)
SPELL_CHECKERS['NoMethodError'] = Experimental::IvarNameCheckerBuilder.new(SPELL_CHECKERS['NoMethodError'])
end
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