Class: IRB::Context

Relationships & Source Files
Inherits:	Object
Defined in:	lib/irb/context.rb, lib/irb/ext/change-ws.rb, lib/irb/ext/history.rb, lib/irb/ext/save-history.rb, lib/irb/ext/tracer.rb, lib/irb/ext/use-loader.rb, lib/irb/ext/workspaces.rb

Overview

A class that wraps the current state of the irb session, including the configuration of conf.

Constant Summary

IDNAME_IVARS = Internal use only
# File 'lib/irb/context.rb', line 400
```
["@prompt_mode"]
```
NOPRINTING_IVARS = Internal use only
# File 'lib/irb/context.rb', line 398
```
["@last_value"]
```
NO_INSPECTING_IVARS = Internal use only
# File 'lib/irb/context.rb', line 399
```
["@irb", "@io"]
```

Class Method Summary

.new(irb, workspace = nil, input_method = nil, output_method = nil) ⇒ Context constructor

Creates a new ::IRB context.

Instance Attribute Summary

#ap_name rw

A copy of the default IRB.conf[:AP_NAME].
#auto_indent_mode rw

Can be either the default IRB.conf[:AUTO_INDENT], or the mode set by #prompt_mode=
#back_trace_limit rw

The limit of backtrace lines displayed as top n and tail n.
#debug? ⇒ Boolean readonly

Whether or not debug mode is enabled, see #debug_level=.
#debug_level rw

The debug level of irb.
#debug_level=(value) rw

Sets the debug level of irb.
#echo? rw

Alias for #echo.
#eval_history rw

The command result history limit.
#eval_history=(no) rw

Sets command result history limit.
#file_input? ⇒ Boolean readonly

Whether #io uses a File for the input_method passed when creating the current context, see .new
#history_file rw

A copy of the default IRB.conf[:HISTORY_FILE].
#history_file=(hist) rw

Set IRB.conf[:HISTORY_FILE] to the given hist.
#ignore_eof? rw

Alias for #ignore_eof.
#ignore_sigint? rw

Alias for #ignore_sigint.
#inspect? ⇒ Boolean readonly

Whether #inspect_mode is set or not, see #inspect_mode= for more detail.
#inspect_mode rw

A copy of the default IRB.conf[:INSPECT_MODE].
#inspect_mode=(opt) rw

Specifies the inspect mode with opt:
#io rw

The current input method.
#irb rw

Current irb session.
#irb_name rw

Can be either name from IRB.conf[:IRB_NAME], or the number of the current job set by JobManager, such as irb#2.
#irb_path rw

Can be either the #irb_name surrounded by parenthesis, or the input_method passed to .new
#last_value readonly

The return value of the last statement evaluated.
#load_modules rw

A copy of the default IRB.conf[:LOAD_MODULES].
#prompt_c rw

::IRB prompt for continuated statement (e.g. immediately after an if).
#prompt_i rw

Standard IRB prompt.
#prompt_mode rw

A copy of the default IRB.conf[:PROMPT_MODE].
#prompt_mode=(mode) rw

Sets the mode of the prompt in this context.
#prompt_n rw

See IRB@Customizing+the+IRB+Prompt for more information.
#prompt_s rw

::IRB prompt for continuated strings.
#prompting? ⇒ Boolean readonly

Whether #verbose? is true, and input_method is either StdioInputMethod or ReadlineInputMethod, see #io for more information.
#rc? rw

Alias for #rc.
#return_format rw

The format of the return statement, set by #prompt_mode= using the :RETURN of the mode passed to set the current #prompt_mode.
#save_history rw

A copy of the default IRB.conf[:SAVE_HISTORY].
#save_history=(val) rw

Sets IRB.conf[:SAVE_HISTORY] to the given val and calls #init_save_history with this context.
#thread readonly

The current thread in this context.
#use_loader (also: #use_loader?) rw

Returns whether #irb‘s own file reader method is used by load/require or not.
#use_loader=(opt) rw

Sets IRB.conf.
#use_loader? rw

Alias for #use_loader.
#use_readline=(opt) rw

Obsolete method.
#use_readline? rw

Alias for #use_readline.
#use_tracer=(opt) rw

Sets whether or not to use the Tracer library when evaluating statements in this context.
#use_tracer? rw

Alias for #use_tracer.
#verbose rw

Whether verbose messages are displayed or not.
#verbose? ⇒ Boolean rw

Returns whether messages are displayed or not.
#workspace rw

WorkSpace in the current context.
#workspace_home readonly

The toplevel workspace, see #home_workspace

Instance Method Summary

#__exit__
#__inspect__
#__to_s__
#_set_last_value(value)

Alias for #set_last_value.
#change_workspace(*_main)

Changes the current workspace to given object or binding.
#echo (also: #echo?) rw

Whether to echo the return value to output or not.
#exit(ret = 0)

Exits the current session, see irb_exit
#home_workspace

Inherited from TOPLEVEL_BINDING.
#ignore_eof (also: #ignore_eof?) rw

Whether ^D (control-d) will be ignored or not.
#ignore_sigint (also: #ignore_sigint?) rw

Whether ^C (control-c) will be ignored or not.
#irb_level

Size of the current WorkSpace stack.
#main

The top-level workspace, see WorkSpace#main
#pop_workspace

Removes the last element from the current #workspaces stack and returns it, or nil if the current workspace stack is empty.
#push_workspace(*_main)

Creates a new workspace with the given object or binding, and appends it onto the current #workspaces stack.
#rc (also: #rc?) rw

A copy of the default IRB.conf[:RC].
#set_last_value(value) (also: #_set_last_value)

Sets the return value from the last statement evaluated in this context to #last_value.
#to_s

Alias for #inspect.
#use_readline (also: #use_readline?) rw

Whether Readline is enabled or not.
#use_tracer (also: #use_tracer?) rw

Whether Tracer is used when evaluating statements in this context.
#workspaces

WorkSpaces in the current stack.
#evaluate(line, line_no, exception: nil) Internal use only
#init_save_history Internal use only
#inspect (also: #to_s) readonly Internal use only
#inspect_last_value Internal use only

Constructor Details

.new(irb, workspace = nil, input_method = nil, output_method = nil) ⇒ `Context`

Creates a new ::IRB context.

The optional input_method argument:

nil: uses stdin or Readline
String: uses a File
other: uses this as InputMethod

[ GitHub ]

# File 'lib/irb/context.rb', line 28


def initialize(irb, workspace = nil, input_method = nil, output_method = nil)
  @irb = irb
  if workspace
    @workspace = workspace
  else
    @workspace = WorkSpace.new
  end
  @thread = Thread.current if defined? Thread

  # copy of default configuration
  @ap_name = IRB.conf[:AP_NAME]
  @rc = IRB.conf[:RC]
  @load_modules = IRB.conf[:LOAD_MODULES]

  @use_readline = IRB.conf[:USE_READLINE]
  @verbose = IRB.conf[:VERBOSE]
  @io = nil

  self.inspect_mode = IRB.conf[:INSPECT_MODE]
  self.use_tracer = IRB.conf[:USE_TRACER] if IRB.conf[:USE_TRACER]
  self.use_loader = IRB.conf[:USE_LOADER] if IRB.conf[:USE_LOADER]
  self.eval_history = IRB.conf[:EVAL_HISTORY] if IRB.conf[:EVAL_HISTORY]

  @ignore_sigint = IRB.conf[:IGNORE_SIGINT]
  @ignore_eof = IRB.conf[:IGNORE_EOF]

  @back_trace_limit = IRB.conf[:BACK_TRACE_LIMIT]

  self.prompt_mode = IRB.conf[:PROMPT_MODE]

  if IRB.conf[:SINGLE_IRB] or !defined?(IRB::JobManager)
    @irb_name = IRB.conf[:IRB_NAME]
  else
    @irb_name = IRB.conf[:IRB_NAME]"#"IRB.JobManager.n_jobs.to_s
  end
  @irb_path = "(" + @irb_name + ")"

  case input_method
  when nil
    case use_readline?
    when nil
      if (defined?(ReadlineInputMethod) && STDIN.tty? &&
          IRB.conf[:PROMPT_MODE] != :INF_RUBY)
        @io = ReadlineInputMethod.new
      else
        @io = StdioInputMethod.new
      end
    when false
      @io = StdioInputMethod.new
    when true
      if defined?(ReadlineInputMethod)
        @io = ReadlineInputMethod.new
      else
        @io = StdioInputMethod.new
      end
    end

  when String
    @io = FileInputMethod.new(input_method)
    @irb_name = File.basename(input_method)
    @irb_path = input_method
  else
    @io = input_method
  end
  self.save_history = IRB.conf[:SAVE_HISTORY] if IRB.conf[:SAVE_HISTORY]

  if output_method
    @output_method = output_method
  else
    @output_method = StdioOutputMethod.new
  end

  @echo = IRB.conf[:ECHO]
  if @echo.nil?
    @echo = true
  end
  self.debug_level = IRB.conf[:DEBUG_LEVEL]
end

Instance Attribute Details

#ap_name (rw)

A copy of the default IRB.conf[:AP_NAME]

[ GitHub ]

# File 'lib/irb/context.rb', line 128


attr_accessor :ap_name

#auto_indent_mode (rw)

Can be either the default IRB.conf[:AUTO_INDENT], or the mode set by #prompt_mode=

To enable auto-indentation in irb:

IRB.conf[:AUTO_INDENT] = true

irb_context.auto_indent_mode = true

IRB.CurrentContext.auto_indent_mode = true

See IRB@Configuration for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 181


attr_accessor :auto_indent_mode

#back_trace_limit (rw)

The limit of backtrace lines displayed as top n and tail n.

The default value is 16.

Can also be set using the --back-trace-limit command line option.

See IRB@Command+line+options for more command line options.

[ GitHub ]

# File 'lib/irb/context.rb', line 226


attr_accessor :back_trace_limit

#debug? ⇒ `Boolean` (readonly)

Whether or not debug mode is enabled, see #debug_level=.

[ GitHub ]

# File 'lib/irb/context.rb', line 375


def debug?
  @debug_level > 0
end

#debug_level (rw)

The debug level of irb

See #debug_level= for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 217


attr_reader :debug_level

#debug_level=(value) (rw)

Sets the debug level of irb

Can also be set using the --irb_debug command line option.

See IRB@Command+line+options for more command line options.

[ GitHub ]

# File 'lib/irb/context.rb', line 369


def debug_level=(value)
  @debug_level = value
  RubyLex.debug_level = value
end

#echo? (rw)

Alias for #echo.

[ GitHub ]

# File 'lib/irb/context.rb', line 234


alias echo? echo

#eval_history (rw)

The command result history limit.

[ GitHub ]

# File 'lib/irb/ext/history.rb', line 34


attr_reader :eval_history

#eval_history=(no) (rw)

Sets command result history limit.

no is an Integer or nil.

Returns no of history items if greater than 0.

If no is 0, the number of history items is unlimited.

If no is nil, execution result history isn’t used (default).

[ GitHub ]

# File 'lib/irb/ext/history.rb', line 44


def eval_history=(no)
  if no
    if defined?(@eval_history) && @eval_history
      @eval_history_values.size(no)
    else
      @eval_history_values = History.new(no)
      IRB.conf[:__TMP__EHV__] = @eval_history_values
      @workspace.evaluate(self, "__ = IRB.conf[:__TMP__EHV__]")
      IRB.conf.delete(:__TMP_EHV__)
    end
  else
    @eval_history_values = nil
  end
  @eval_history = no
end

#file_input? ⇒ `Boolean` (readonly)

Whether #io uses a File for the input_method passed when creating the current context, see .new

[ GitHub ]

# File 'lib/irb/context.rb', line 293


def file_input?
  @io.class == FileInputMethod
end

#history_file (rw)

A copy of the default IRB.conf[:HISTORY_FILE]

[ GitHub ]

# File 'lib/irb/ext/save-history.rb', line 50


def history_file
  IRB.conf[:HISTORY_FILE]
end

#history_file=(hist) (rw)

Set IRB.conf[:HISTORY_FILE] to the given hist.

[ GitHub ]

# File 'lib/irb/ext/save-history.rb', line 55


def history_file=(hist)
  IRB.conf[:HISTORY_FILE] = hist
end

#ignore_eof? (rw)

Alias for #ignore_eof.

[ GitHub ]

# File 'lib/irb/context.rb', line 233


alias ignore_eof? ignore_eof

#ignore_sigint? (rw)

Alias for #ignore_sigint.

[ GitHub ]

# File 'lib/irb/context.rb', line 232


alias ignore_sigint? ignore_sigint

#inspect? ⇒ `Boolean` (readonly)

Whether #inspect_mode is set or not, see #inspect_mode= for more detail.

[ GitHub ]

# File 'lib/irb/context.rb', line 287


def inspect?
  @inspect_mode.nil? or @inspect_mode
end

#inspect_mode (rw)

A copy of the default IRB.conf[:INSPECT_MODE]

[ GitHub ]

# File 'lib/irb/context.rb', line 147


attr_reader :inspect_mode

#inspect_mode=(opt) (rw)

Specifies the inspect mode with opt:

true: display #inspect
false: display #to_s
nil: inspect mode in non-math mode, non-inspect mode in math mode

See Inspector for more information.

Can also be set using the --inspect and --noinspect command line options.

See IRB@Command+line+options for more command line options.

[ GitHub ]

# File 'lib/irb/context.rb', line 310


def inspect_mode=(opt)

  if i = Inspector::INSPECTORS[opt]
    @inspect_mode = opt
    @inspect_method = i
    i.init
  else
    case opt
    when nil
      if Inspector.keys_with_inspector(Inspector::INSPECTORS[true]).include?(@inspect_mode)
        self.inspect_mode = false
      elsif Inspector.keys_with_inspector(Inspector::INSPECTORS[false]).include?(@inspect_mode)
        self.inspect_mode = true
      else
        puts "Can't switch inspect mode."
        return
      end
    when /^\s*\{.*\}\s*$/
      begin
        inspector = eval "proc#{opt}"
      rescue Exception
        puts "Can't switch inspect mode(#{opt})."
        return
      end
      self.inspect_mode = inspector
    when Proc
      self.inspect_mode = IRB::Inspector(opt)
    when Inspector
      prefix = "usr%d"
      i = 1
      while Inspector::INSPECTORS[format(prefix, i)]; i += 1; end
      @inspect_mode = format(prefix, i)
      @inspect_method = opt
      Inspector.def_inspector(format(prefix, i), @inspect_method)
    else
      puts "Can't switch inspect mode(#{opt})."
      return
    end
  end
  print "Switch to#{unless @inspect_mode; ' non';end} inspect mode.\n" if verbose?
  @inspect_mode
end

#io (rw)

The current input method

Can be either StdioInputMethod, ReadlineInputMethod, FileInputMethod or other specified when the context is created. See .new for more information on input_method.

[ GitHub ]

# File 'lib/irb/context.rb', line 123


attr_accessor :io

#irb (rw)

Current irb session

[ GitHub ]

# File 'lib/irb/context.rb', line 126


attr_accessor :irb

#irb_name (rw)

Can be either name from IRB.conf[:IRB_NAME], or the number of the current job set by JobManager, such as irb#2

[ GitHub ]

# File 'lib/irb/context.rb', line 135


attr_accessor :irb_name

#irb_path (rw)

Can be either the #irb_name surrounded by parenthesis, or the input_method passed to .new

[ GitHub ]

# File 'lib/irb/context.rb', line 138


attr_accessor :irb_path

#last_value (readonly)

The return value of the last statement evaluated.

[ GitHub ]

# File 'lib/irb/context.rb', line 259


attr_reader :last_value

#load_modules (rw)

A copy of the default IRB.conf[:LOAD_MODULES]

[ GitHub ]

# File 'lib/irb/context.rb', line 132


attr_accessor :load_modules

#prompt_c (rw)

::IRB prompt for continuated statement (e.g. immediately after an if)

See IRB@Customizing+the+IRB+Prompt for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 162


attr_accessor :prompt_c

#prompt_i (rw)

Standard IRB prompt

See IRB@Customizing+the+IRB+Prompt for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 154


attr_accessor :prompt_i

#prompt_mode (rw)

A copy of the default IRB.conf[:PROMPT_MODE]

[ GitHub ]

# File 'lib/irb/context.rb', line 150


attr_reader :prompt_mode

#prompt_mode=(mode) (rw)

Sets the mode of the prompt in this context.

See IRB@Customizing+the+IRB+Prompt for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 271


def prompt_mode=(mode)
  @prompt_mode = mode
  pconf = IRB.conf[:PROMPT][mode]
  @prompt_i = pconf[:PROMPT_I]
  @prompt_s = pconf[:PROMPT_S]
  @prompt_c = pconf[:PROMPT_C]
  @prompt_n = pconf[:PROMPT_N]
  @return_format = pconf[:RETURN]
  if ai = pconf.include?(:AUTO_INDENT)
    @auto_indent_mode = ai
  else
    @auto_indent_mode = IRB.conf[:AUTO_INDENT]
  end
end

#prompt_n (rw)

See IRB@Customizing+the+IRB+Prompt for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 164


attr_accessor :prompt_n

#prompt_s (rw)

::IRB prompt for continuated strings

See IRB@Customizing+the+IRB+Prompt for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 158


attr_accessor :prompt_s

#prompting? ⇒ `Boolean` (readonly)

Whether #verbose? is true, and input_method is either StdioInputMethod or ReadlineInputMethod, see #io for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 253


def prompting?
  verbose? || (STDIN.tty? && @io.kind_of?(StdioInputMethod) ||
               (defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)))
end

#rc? (rw)

Alias for #rc.

[ GitHub ]

# File 'lib/irb/context.rb', line 231


alias rc? rc

#return_format (rw)

The format of the return statement, set by #prompt_mode= using the :RETURN of the mode passed to set the current #prompt_mode.

[ GitHub ]

# File 'lib/irb/context.rb', line 184


attr_accessor :return_format

#save_history (rw)

A copy of the default IRB.conf[:SAVE_HISTORY]

[ GitHub ]

# File 'lib/irb/ext/save-history.rb', line 26


def save_history
  IRB.conf[:SAVE_HISTORY]
end

#save_history=(val) (rw)

Sets IRB.conf[:SAVE_HISTORY] to the given val and calls #init_save_history with this context.

Will store the number of val entries of history in the #history_file

Add the following to your .irbrc to change the number of history entries stored to 1000:

IRB.conf[:SAVE_HISTORY] = 1000

[ GitHub ]

# File 'lib/irb/ext/save-history.rb', line 40


def save_history=(val)
  IRB.conf[:SAVE_HISTORY] = val
  if val
    main_context = IRB.conf[:MAIN_CONTEXT]
    main_context = self unless main_context
    main_context.init_save_history
  end
end

#thread (readonly)

The current thread in this context

[ GitHub ]

# File 'lib/irb/context.rb', line 117


attr_reader :thread

#use_loader (rw) Also known as: #use_loader?

Returns whether #irb‘s own file reader method is used by load/require or not.

This mode is globally affected (irb-wide).

[ GitHub ]

# File 'lib/irb/ext/use-loader.rb', line 41


def use_loader
  IRB.conf[:USE_LOADER]
end

#use_loader=(opt) (rw)

Sets IRB.conf

See #use_loader for more information.

[ GitHub ]

# File 'lib/irb/ext/use-loader.rb', line 50


def use_loader=(opt)

  if IRB.conf[:USE_LOADER] != opt
    IRB.conf[:USE_LOADER] = opt
    if opt
      if !$".include?("irb/cmd/load")
      end
      (class<<@workspace.main;self;end).instance_eval {
        alias_method :load, :irb_load
        alias_method :require, :irb_require
      }
    else
      (class<<@workspace.main;self;end).instance_eval {
        alias_method :load, :__original__load__IRB_use_loader__
        alias_method :require, :__original__require__IRB_use_loader__
      }
    end
  end
  print "Switch to load/require#{unless use_loader; ' non';end} trace mode.\n" if verbose?
  opt
end

#use_loader? (rw)

Alias for #use_loader.

[ GitHub ]

# File 'lib/irb/ext/use-loader.rb', line 45


alias use_loader? use_loader

#use_readline=(opt) (rw)

Obsolete method.

Can be set using the --noreadline and --readline command line options.

See IRB@Command+line+options for more command line options.

[ GitHub ]

# File 'lib/irb/context.rb', line 359


def use_readline=(opt)
  print "This method is obsolete."
  print "Do nothing."
end

#use_readline? (rw)

Alias for #use_readline.

[ GitHub ]

# File 'lib/irb/context.rb', line 229


alias use_readline? use_readline

#use_tracer=(opt) (rw)

Sets whether or not to use the Tracer library when evaluating statements in this context.

See lib/tracer.rb for more information.

[ GitHub ]

# File 'lib/irb/ext/tracer.rb', line 37


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

#use_tracer? (rw)

Alias for #use_tracer.

[ GitHub ]

# File 'lib/irb/ext/tracer.rb', line 31


alias use_tracer? use_tracer

#verbose (rw)

Whether verbose messages are displayed or not.

A copy of the default IRB.conf[:VERBOSE]

[ GitHub ]

# File 'lib/irb/context.rb', line 213


attr_accessor :verbose

#verbose? ⇒ `Boolean` (rw)

Returns whether messages are displayed or not.

[ GitHub ]

# File 'lib/irb/context.rb', line 237


def verbose?
  if @verbose.nil?
    if defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)
      false
    elsif !STDIN.tty? or @io.kind_of?(FileInputMethod)
      true
    else
      false
    end
  else
    @verbose
  end
end

#workspace (rw)

WorkSpace in the current context

[ GitHub ]

# File 'lib/irb/context.rb', line 115


attr_accessor :workspace

#workspace_home (readonly)

The toplevel workspace, see #home_workspace

[ GitHub ]

# File 'lib/irb/context.rb', line 113


attr_reader :workspace_home

Instance Method Details

#exit

[ GitHub ]

# File 'lib/irb/context.rb', line 392


alias __exit__ exit

#inspect

[ GitHub ]

# File 'lib/irb/context.rb', line 402


alias __inspect__ inspect

#__to_s__

[ GitHub ]

# File 'lib/irb/context.rb', line 422


alias __to_s__ to_s

#_set_last_value(value)

Alias for #set_last_value.

[ GitHub ]

# File 'lib/irb/ext/history.rb', line 20


alias _set_last_value set_last_value

#change_workspace(*_main)

Changes the current workspace to given object or binding.

If the optional argument is omitted, the workspace will be #home_workspace which is inherited from TOPLEVEL_BINDING or the main object, IRB.conf[:MAIN_CONTEXT] when irb was initialized.

See WorkSpace.new for more information.

[ GitHub ]

# File 'lib/irb/ext/change-ws.rb', line 32


def change_workspace(*_main)
  if _main.empty?
    @workspace = home_workspace
    return main
  end

  @workspace = WorkSpace.new(_main[0])

  if !(class<<main;ancestors;end).include?(ExtendCommandBundle)
    main.extend ExtendCommandBundle
  end
end

#echo (rw) Also known as: #echo?

Whether to echo the return value to output or not.

Uses IRB.conf if available, or defaults to true.

puts "hello"
# hello
#=> nil
IRB.CurrentContext.echo = false
puts "omg"
# omg

[ GitHub ]

# File 'lib/irb/context.rb', line 209


attr_accessor :echo

#evaluate(line, line_no, exception: nil)

This method is for internal use only.

[ GitHub ]

# File 'lib/irb/context.rb', line 379


def evaluate(line, line_no, exception: nil) # :nodoc:
  @line_no = line_no
  if exception
    line = "begin ::Kernel.raise _; rescue _.class; #{line}; end"
    @workspace.local_variable_set(:_, exception)
  end
  set_last_value(@workspace.evaluate(self, line, irb_path, line_no))
end

#exit(ret = 0)

Exits the current session, see IRB.irb_exit

[ GitHub ]

# File 'lib/irb/context.rb', line 394


def exit(ret = 0)
  IRB.irb_exit(@irb, ret)
end

#home_workspace

Inherited from TOPLEVEL_BINDING.

[ GitHub ]

# File 'lib/irb/ext/change-ws.rb', line 17


def home_workspace
  if defined? @home_workspace
    @home_workspace
  else
    @home_workspace = @workspace
  end
end

#ignore_eof (rw) Also known as: #ignore_eof?

Whether ^D (control-d) will be ignored or not.

If set to false, ^D will quit irb.

[ GitHub ]

# File 'lib/irb/context.rb', line 198


attr_accessor :ignore_eof

#ignore_sigint (rw) Also known as: #ignore_sigint?

Whether ^C (control-c) will be ignored or not.

If set to false, ^C will quit irb.

If set to true,

during input: cancel input then return to top level.
during execute: abandon current execution.

[ GitHub ]

# File 'lib/irb/context.rb', line 194


attr_accessor :ignore_sigint

#init_save_history

This method is for internal use only.

[ GitHub ]

# File 'lib/irb/ext/save-history.rb', line 19


def init_save_history# :nodoc:
  unless (class<<@io;self;end).include?(HistorySavingAbility)
    @io.extend(HistorySavingAbility)
  end
end

#inspect (readonly) Also known as: #to_s

This method is for internal use only.

[ GitHub ]

# File 'lib/irb/context.rb', line 403


def inspect # :nodoc:
  array = []
  for ivar in instance_variables.sort{|e1, e2| e1 <=> e2}
    ivar = ivar.to_s
    name = ivar.sub(/^@(.*)$/, '\1')
    val = instance_eval(ivar)
    case ivar
    when *NOPRINTING_IVARS
      array.push format("conf.%s=%s", name, "...")
    when *NO_INSPECTING_IVARS
      array.push format("conf.%s=%s", name, val.to_s)
    when *IDNAME_IVARS
      array.push format("conf.%s=:%s", name, val.id2name)
    else
      array.push format("conf.%s=%s", name, val.inspect)
    end
  end
  array.join("\n")
end

#inspect_last_value

This method is for internal use only.

[ GitHub ]

# File 'lib/irb/context.rb', line 388


def inspect_last_value # :nodoc:
  @inspect_method.inspect_value(@last_value)
end

#irb_level

Size of the current WorkSpace stack

[ GitHub ]

# File 'lib/irb/ext/workspaces.rb', line 17


def irb_level
  workspace_stack.size
end

#main

The top-level workspace, see WorkSpace#main

[ GitHub ]

# File 'lib/irb/context.rb', line 108


def main
  @workspace.main
end

#pop_workspace

Removes the last element from the current #workspaces stack and returns it, or nil if the current workspace stack is empty.

Also, see #push_workspace.

[ GitHub ]

# File 'lib/irb/ext/workspaces.rb', line 58


def pop_workspace
  if workspaces.empty?
    print "workspace stack empty\n"
    return
  end
  @workspace = workspaces.pop
end

#push_workspace(*_main)

Creates a new workspace with the given object or binding, and appends it onto the current #workspaces stack.

See #change_workspace and WorkSpace.new for more information.

[ GitHub ]

# File 'lib/irb/ext/workspaces.rb', line 35


def push_workspace(*_main)
  if _main.empty?
    if workspaces.empty?
      print "No other workspace\n"
      return nil
    end
    ws = workspaces.pop
    workspaces.push @workspace
    @workspace = ws
    return workspaces
  end

  workspaces.push @workspace
  @workspace = WorkSpace.new(@workspace.binding, _main[0])
  if !(class<<main;ancestors;end).include?(ExtendCommandBundle)
    main.extend ExtendCommandBundle
  end
end

#rc (rw) Also known as: #rc?

A copy of the default IRB.conf[:RC]

[ GitHub ]

# File 'lib/irb/context.rb', line 130


attr_accessor :rc

#set_last_value(value) Also known as: #_set_last_value

Sets the return value from the last statement evaluated in this context to #last_value.

See additional method definition at file lib/irb/context.rb line 263.

[ GitHub ]

# File 'lib/irb/ext/history.rb', line 22


def set_last_value(value)
  @last_value = value
  @workspace.local_variable_set :_, value
end

#to_s

Alias for #inspect.

[ GitHub ]

# File 'lib/irb/context.rb', line 423


alias to_s inspect

#use_readline (rw) Also known as: #use_readline?

Whether Readline is enabled or not.

A copy of the default IRB.conf[:USE_READLINE]

See #use_readline= for more information.

[ GitHub ]

# File 'lib/irb/context.rb', line 145


attr_reader :use_readline

#use_tracer (rw) Also known as: #use_tracer?

Whether Tracer is used when evaluating statements in this context.

See lib/tracer.rb for more information.

[ GitHub ]

# File 'lib/irb/ext/tracer.rb', line 30


attr_reader :use_tracer

#workspaces

WorkSpaces in the current stack

[ GitHub ]

# File 'lib/irb/ext/workspaces.rb', line 22


def workspaces
  if defined? @workspaces
    @workspaces
  else
    @workspaces = []
  end
end

Class: IRB::Context

Overview

Constant Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(irb, workspace = nil, input_method = nil, output_method = nil) ⇒ Context

Instance Attribute Details

#ap_name (rw)

#auto_indent_mode (rw)

#back_trace_limit (rw)

#debug? ⇒ Boolean (readonly)

#debug_level (rw)

#debug_level=(value) (rw)

#echo? (rw)

#eval_history (rw)

#eval_history=(no) (rw)

#file_input? ⇒ Boolean (readonly)

#history_file (rw)

#history_file=(hist) (rw)

#ignore_eof? (rw)

#ignore_sigint? (rw)

#inspect? ⇒ Boolean (readonly)

#inspect_mode (rw)

#inspect_mode=(opt) (rw)

#io (rw)

#irb (rw)

#irb_name (rw)

#irb_path (rw)

#last_value (readonly)

#load_modules (rw)

#prompt_c (rw)

#prompt_i (rw)

#prompt_mode (rw)

#prompt_mode=(mode) (rw)

#prompt_n (rw)

#prompt_s (rw)

#prompting? ⇒ Boolean (readonly)

#rc? (rw)

#return_format (rw)

#save_history (rw)

#save_history=(val) (rw)

#thread (readonly)

#use_loader (rw) Also known as: #use_loader?

#use_loader=(opt) (rw)

#use_loader? (rw)

#use_readline=(opt) (rw)

#use_readline? (rw)

#use_tracer=(opt) (rw)

#use_tracer? (rw)

#verbose (rw)

#verbose? ⇒ Boolean (rw)

#workspace (rw)

#workspace_home (readonly)

Instance Method Details

#__exit__

#__inspect__

#__to_s__

#_set_last_value(value)

#change_workspace(*_main)

#echo (rw) Also known as: #echo?

#evaluate(line, line_no, exception: nil)

#exit(ret = 0)

#home_workspace

#ignore_eof (rw) Also known as: #ignore_eof?

#ignore_sigint (rw) Also known as: #ignore_sigint?

#init_save_history

#inspect (readonly) Also known as: #to_s

#inspect_last_value

#irb_level

#main

#pop_workspace

#push_workspace(*_main)

#rc (rw) Also known as: #rc?

#set_last_value(value) Also known as: #_set_last_value

#to_s

#use_readline (rw) Also known as: #use_readline?

#use_tracer (rw) Also known as: #use_tracer?

#workspaces

.new(irb, workspace = nil, input_method = nil, output_method = nil) ⇒ `Context`

#debug? ⇒ `Boolean` (readonly)

#file_input? ⇒ `Boolean` (readonly)

#inspect? ⇒ `Boolean` (readonly)

#prompting? ⇒ `Boolean` (readonly)

#verbose? ⇒ `Boolean` (rw)

#exit

#inspect