JezK
Edit File: source_location.rb
module MethodSource module ReeSourceLocation # Ruby enterprise edition provides all the information that's # needed, in a slightly different way. def source_location [__file__, __line__] rescue nil end end module SourceLocation module MethodExtensions if Proc.method_defined? :__file__ include ReeSourceLocation elsif defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /jruby/ require 'java' # JRuby version source_location hack # @return [Array] A two element array containing the source location of the method def source_location to_java.source_location(Thread.current.to_java.getContext()) end else def trace_func(event, file, line, id, binding, classname) return unless event == 'call' set_trace_func nil @file, @line = file, line raise :found end private :trace_func # Return the source location of a method for Ruby 1.8. # @return [Array] A two element array. First element is the # file, second element is the line in the file where the # method definition is found. def source_location if @file.nil? args =[*(1..(arity<-1 ? -arity-1 : arity ))] set_trace_func method(:trace_func).to_proc call(*args) rescue nil set_trace_func nil @file = File.expand_path(@file) if @file && File.exist?(File.expand_path(@file)) end [@file, @line] if @file end end end module ProcExtensions if Proc.method_defined? :__file__ include ReeSourceLocation elsif defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /rbx/ # Return the source location for a Proc (Rubinius only) # @return [Array] A two element array. First element is the # file, second element is the line in the file where the # proc definition is found. def source_location [block.file.to_s, block.line] end else # Return the source location for a Proc (in implementations # without Proc#source_location) # @return [Array] A two element array. First element is the # file, second element is the line in the file where the # proc definition is found. def source_location self.to_s =~ /@(.*):(\d+)/ [$1, $2.to_i] end end end module UnboundMethodExtensions if Proc.method_defined? :__file__ include ReeSourceLocation elsif defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /jruby/ require 'java' # JRuby version source_location hack # @return [Array] A two element array containing the source location of the method def source_location to_java.source_location(Thread.current.to_java.getContext()) end else # Return the source location of an instance method for Ruby 1.8. # @return [Array] A two element array. First element is the # file, second element is the line in the file where the # method definition is found. def source_location klass = case owner when Class owner when Module method_owner = owner Class.new { include(method_owner) } end # deal with immediate values case when klass == Symbol return :a.method(name).source_location when klass == Integer return 0.method(name).source_location when klass == TrueClass return true.method(name).source_location when klass == FalseClass return false.method(name).source_location when klass == NilClass return nil.method(name).source_location end begin Object.instance_method(:method).bind(klass.allocate).call(name).source_location rescue TypeError # Assume we are dealing with a Singleton Class: # 1. Get the instance object # 2. Forward the source_location lookup to the instance instance ||= ObjectSpace.each_object(owner).first Object.instance_method(:method).bind(instance).call(name).source_location end end end end end end