Class: Debugger::VarInstanceCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/ruby-debug/commands/variables.rb

Overview

:nodoc:

Constant Summary

Constants inherited from Command

Command::DEF_OPTIONS

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

commands, #find, inherited, #initialize, load_commands, #match, method_missing, options

Constructor Details

This class inherits a constructor from Debugger::Command

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Debugger::Command

Class Method Details

.help(cmd) ⇒ Object 



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# File 'lib/ruby-debug/commands/variables.rb', line 102

def help(cmd)
  %{
    v[ar] i[nstance] <object>\tshow instance variables of object, object can be given by its id or an expression
  }
end

.help_command ⇒ Object 



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# File 'lib/ruby-debug/commands/variables.rb', line 98

def help_command
  'var'
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/ruby-debug/commands/variables.rb', line 61

def execute
  if (@match[1])
    obj = ObjectSpace._id2ref(@match[1].hex) rescue nil
    unless obj
      # TODO: ensure that empty variables frame will be printed
      @printer.print_msg("Unknown object id : %s", @match[1])
    end
  else
    obj = debug_eval(@match.post_match)
  end
  return unless obj
  if (obj.is_a?(Array)) then
    print_array(obj)
  elsif (obj.is_a?(Hash)) then
    print_hash(obj)
  else
    print_element("variables") do
      # instance variables
      kind = 'instance'
      inst_vars = obj.instance_variables
      instance_binding = obj.instance_eval{binding()}
      # print self at top position
      print_variable('self', debug_eval('self', instance_binding), kind) if inst_vars.include?('self')
      inst_vars.sort.each do |var|
        print_variable(var, debug_eval(var, instance_binding), kind) unless var == 'self'
      end
      
      # class variables
      class_binding = obj.class.class_eval('binding()')
      obj.class.class_variables.sort.each do |var|
        print_variable(var, debug_eval(var, class_binding), 'class')
      end
    end
  end 
end

#regexp ⇒ Object 



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# File 'lib/ruby-debug/commands/variables.rb', line 56

def regexp
  # id will be read as first match, name as post match
  /^\s*v(?:ar)?\s+i(?:nstance)?\s+((?:[\\+-]0x)[\dabcdef]+)?/
end