# # irb/lib/tracer.rb - # $Release Version: 0.9.6$ # $Revision: 38515 $ # by Keiju ISHITSUKA(keiju@ruby-lang.org) # # -- # # # require "tracer" module IRB # initialize tracing function def IRB.initialize_tracer Tracer.verbose = false Tracer.add_filter { |event, file, line, id, binding, *rests| /^#{Regexp.quote(@CONF[:IRB_LIB_PATH])}/ !~ file and File::basename(file) != "irb.rb" } end class Context # Whether Tracer is used when evaluating statements in this context. # # See +lib/tracer.rb+ for more information. attr_reader :use_tracer alias use_tracer? use_tracer # Sets whether or not to use the Tracer library when evaluating statements # in this context. # # See +lib/tracer.rb+ for more information. def use_tracer=(opt) if opt Tracer.set_get_line_procs(@irb_path) { |line_no, *rests| @io.line(line_no) } elsif !opt && @use_tracer Tracer.off end @use_tracer=opt end end class WorkSpace alias __evaluate__ evaluate # Evaluate the context of this workspace and use the Tracer library to # output the exact lines of code are being executed in chronological order. # # See +lib/tracer.rb+ for more information. def evaluate(context, statements, file = nil, line = nil) if context.use_tracer? && file != nil && line != nil Tracer.on begin __evaluate__(context, statements, file, line) ensure Tracer.off end else __evaluate__(context, statements, file || __FILE__, line || __LINE__) end end end IRB.initialize_tracer end