Class: Debugger::EvalCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/ruby-debug/commands/eval.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, inherited, #initialize, load_commands, method_missing, options

Constructor Details

This class inherits a constructor from Debugger::Command

Class Method Details

.help(cmd) ⇒ Object 



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# File 'lib/ruby-debug/commands/eval.rb', line 27

def help(cmd)
  if cmd == 'p'
    %{
      p expression\tevaluate expression and print its value
    }
  else
    %{
      e[val] expression\tevaluate expression and print its value,
      \t\t\talias for p.
      e[val] on/off\t\twhen 'on', debugger will evaluate every unknown command.
    }
  end
end

.help_command ⇒ Object 



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# File 'lib/ruby-debug/commands/eval.rb', line 23

def help_command
  %w|p eval|
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/ruby-debug/commands/eval.rb', line 12

def execute
  if @match && @match[1] != 'p' && %w[on off].include?(@match[2])
    self.class.unknown = @match[2] == 'on'
    print "Evaluation of unknown command is #{self.class.unknown ? 'on': 'off'}.\n"
    return
  end
  expr = @match ? @match.post_match : @input
  print "%s\n", debug_eval(expr).inspect
end

#match(input) ⇒ Object 



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# File 'lib/ruby-debug/commands/eval.rb', line 3

def match(input)
  @input = input
  super
end

#regexp ⇒ Object 



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# File 'lib/ruby-debug/commands/eval.rb', line 8

def regexp
  /^\s*(p|e(?:val)?)(?:\s+(on|off)$|\s+)/
end