Class: DEBUGGER__::ObjectTracer

Inherits:
Tracer show all
Defined in:
lib/debug/tracer.rb

Instance Attribute Summary

Attributes inherited from Tracer

#key, #type

Instance Method Summary collapse

Methods inherited from Tracer

#colorize, #disable, #enable, #header, #minfo, #out, #puts, #skip?, #skip_with_pattern?, #to_s

Methods included from Color

#color_pp, #colored_inspect, #colorize, #colorize_blue, #colorize_code, #colorize_cyan, #colorize_dim, #colorize_magenta, #irb_colorize, #with_inspection_error_guard

Methods included from SkipPathHelper

#skip_config_skip_path?, #skip_internal_path?, #skip_location?, #skip_path?

Constructor Details

#initialize(ui, obj_id, obj_inspect, **kw) ⇒ ObjectTracer

Returns a new instance of ObjectTracer.



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# File 'lib/debug/tracer.rb', line 170

def initialize ui, obj_id, obj_inspect, **kw
  @obj_id = obj_id
  @obj_inspect = obj_inspect
  super(ui, **kw)
  @key = [@type, @obj_id, @pattern, @into].freeze
end

Instance Method Details

#colorized_obj_inspect ⇒ Object 



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# File 'lib/debug/tracer.rb', line 181

def colorized_obj_inspect
  colorize_magenta(@obj_inspect)
end

#description ⇒ Object 



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# File 'lib/debug/tracer.rb', line 177

def description
  " for #{@obj_inspect}"
end

#setup ⇒ Object 



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# File 'lib/debug/tracer.rb', line 185

def setup
  @tracer = TracePoint.new(:a_call){|tp|
    next if skip?(tp)

    if M_OBJECT_ID.bind_call(tp.self) == @obj_id
      klass = tp.defined_class
      method = tp.method_id
      method_info =
        if klass.singleton_class?
          if tp.self.is_a?(Class)
            ".#{method} (#{klass}.#{method})"
          else
            ".#{method}"
          end
        else
          "##{method} (#{klass}##{method})"
        end

      out tp, " #{colorized_obj_inspect} receives #{colorize_blue(method_info)}"
    elsif !tp.parameters.empty?
      b = tp.binding
      method_info = colorize_blue(minfo(tp))

      tp.parameters.each{|type, name|
        next unless name

        colorized_name = colorize_cyan(name)

        case type
        when :req, :opt, :key, :keyreq
          if b.local_variable_get(name).object_id == @obj_id
            out tp, " #{colorized_obj_inspect} is used as a parameter #{colorized_name} of #{method_info}"
          end
        when :rest
          next if name == :"*"

          ary = b.local_variable_get(name)
          ary.each{|e|
            if e.object_id == @obj_id
              out tp, " #{colorized_obj_inspect} is used as a parameter in #{colorized_name} of #{method_info}"
            end
          }
        when :keyrest
          next if name == :'**'
          h = b.local_variable_get(name)
          h.each{|k, e|
            if e.object_id == @obj_id
              out tp, " #{colorized_obj_inspect} is used as a parameter in #{colorized_name} of #{method_info}"
            end
          }
        end
      }
    end
  }
end