Module: IRB::ExtendCommandBundle

Defined in:
lib/irb/extend-command.rb,
lib/irb/ext/use-loader.rb

Overview

IRB extended command

Constant Summary collapse

EXCB = 
ExtendCommandBundle
NO_OVERRIDE = 
0
OVERRIDE_PRIVATE_ONLY = 
0x01
OVERRIDE_ALL = 
0x02

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.def_extend_command(cmd_name, cmd_class, load_file = nil, *aliases) ⇒ Object

aliases = [commans_alias, flag], …



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# File 'lib/irb/extend-command.rb', line 116

def self.def_extend_command(cmd_name, cmd_class, load_file = nil, *aliases)
  case cmd_class
  when Symbol
  cmd_class = cmd_class.id2name
  when String
  when Class
  cmd_class = cmd_class.name
  end

  if load_file
  eval %[
    def #{cmd_name}(*opts, &b)
 require "#{load_file}"
 eval %[
   def #{cmd_name}(*opts, &b)
    ExtendCommand::#{cmd_class}.execute(irb_context, *opts, &b)
   end
 ]
 send :#{cmd_name}, *opts, &b
    end
  ]
  else
  eval %[
    def #{cmd_name}(*opts, &b)
 ExtendCommand::#{cmd_class}.execute(irb_context, *opts, &b)
    end
  ]
  end

  for ali, flag in aliases
  @ALIASES.push [ali, cmd_name, flag]
  end
end

.extend_object(obj) ⇒ Object 



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# File 'lib/irb/extend-command.rb', line 175

def self.extend_object(obj)
  unless (class<<obj;ancestors;end).include?(EXCB)
  super
  for ali, com, flg in @ALIASES
    obj.install_alias_method(ali, com, flg)
  end
  end
end

.install_extend_commands ⇒ Object 



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# File 'lib/irb/extend-command.rb', line 109

def self.install_extend_commands
  for args in @EXTEND_COMMANDS
  def_extend_command(*args)
  end
end

.irb_original_method_name(method_name) ⇒ Object 



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# File 'lib/irb/extend-command.rb', line 171

def self.irb_original_method_name(method_name)
  "irb_" + method_name + "_org"
end

Instance Method Details

#install_alias_method(to, from, override = NO_OVERRIDE) ⇒ Object

override = OVERRIDE_PRIVATE_ONLY, OVERRIDE_ALL



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# File 'lib/irb/extend-command.rb', line 151

def install_alias_method(to, from, override = NO_OVERRIDE)
  to = to.id2name unless to.kind_of?(String)
  from = from.id2name unless from.kind_of?(String)

  if override == OVERRIDE_ALL or
    (override == OVERRIDE_PRIVATE_ONLY) && !respond_to?(to) or
    (override == NO_OVERRIDE) &&  !respond_to?(to, true)
  target = self
  (class<<self;self;end).instance_eval{
    if target.respond_to?(to, true) && 
   !target.respond_to?(EXCB.irb_original_method_name(to), true)
 alias_method(EXCB.irb_original_method_name(to), to) 
    end
    alias_method to, from
  }
  else
  print "irb: warn: can't alias #{to} from #{from}.\n"
  end
end

#irb_context ⇒ Object 



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# File 'lib/irb/extend-command.rb', line 27

def irb_context
  IRB.CurrentContext
end

#irb_exit(ret = 0) ⇒ Object 



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# File 'lib/irb/extend-command.rb', line 23

def irb_exit(ret = 0)
  irb_context.exit(ret)
end

#irb_load(*opts, &b) ⇒ Object 



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# File 'lib/irb/ext/use-loader.rb', line 23

def irb_load(*opts, &b)
  ExtendCommand::Load.execute(irb_context, *opts, &b)
end

#irb_require(*opts, &b) ⇒ Object 



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# File 'lib/irb/ext/use-loader.rb', line 26

def irb_require(*opts, &b)
  ExtendCommand::Require.execute(irb_context, *opts, &b)
end