Module: IRB

Defined in:
lib/irb.rb,
lib/irb/help.rb,
lib/irb/init.rb,
lib/irb/color.rb,
lib/irb/debug.rb,
lib/irb/frame.rb,
lib/irb/pager.rb,
lib/irb/cmd/ls.rb,
lib/irb/locale.rb,
lib/irb/cmd/nop.rb,
lib/irb/context.rb,
lib/irb/history.rb,
lib/irb/version.rb,
lib/irb/cmd/chws.rb,
lib/irb/cmd/edit.rb,
lib/irb/cmd/exit.rb,
lib/irb/cmd/help.rb,
lib/irb/cmd/info.rb,
lib/irb/cmd/load.rb,
lib/irb/cmd/next.rb,
lib/irb/cmd/step.rb,
lib/irb/debug/ui.rb,
lib/irb/lc/error.rb,
lib/irb/notifier.rb,
lib/irb/ruby-lex.rb,
lib/irb/cmd/break.rb,
lib/irb/cmd/catch.rb,
lib/irb/cmd/debug.rb,
lib/irb/inspector.rb,
lib/irb/statement.rb,
lib/irb/workspace.rb,
lib/irb/cmd/delete.rb,
lib/irb/cmd/finish.rb,
lib/irb/cmd/pushws.rb,
lib/irb/cmd/subirb.rb,
lib/irb/completion.rb,
lib/irb/easter-egg.rb,
lib/irb/ext/loader.rb,
lib/irb/ext/tracer.rb,
lib/irb/cmd/history.rb,
lib/irb/cmd/measure.rb,
lib/irb/lc/ja/error.rb,
lib/irb/cmd/continue.rb,
lib/irb/cmd/irb_info.rb,
lib/irb/cmd/show_doc.rb,
lib/irb/cmd/whereami.rb,
lib/irb/input-method.rb,
lib/irb/cmd/backtrace.rb,
lib/irb/cmd/show_cmds.rb,
lib/irb/color_printer.rb,
lib/irb/ext/change-ws.rb,
lib/irb/ext/multi-irb.rb,
lib/irb/output-method.rb,
lib/irb/source_finder.rb,
lib/irb/ext/use-loader.rb,
lib/irb/ext/workspaces.rb,
lib/irb/extend-command.rb,
lib/irb/nesting_parser.rb,
lib/irb/cmd/show_source.rb,
lib/irb/ext/eval_history.rb

Overview

history.rb -

	by Keiju ISHITSUKA(keiju@ruby-lang.org)

Defined Under Namespace

Modules: Color, ContextExtender, Debug, ExtendCommand, ExtendCommandBundle, HistorySavingAbility, InputCompletor, IrbLoader, NestingParser, Notifier Classes: Abort, BaseCompletor, CantChangeBinding, CantReturnToNormalMode, Canvas, ColorPrinter, Context, EvalHistory, FileInputMethod, Frame, IllegalParameter, IllegalRCGenerator, InputMethod, Inspector, Irb, IrbAlreadyDead, IrbSwitchedToCurrentThread, JobManager, LoadAbort, Locale, NoSuchJob, NotImplementedError, OutputMethod, Pager, ReadlineInputMethod, RegexpCompletor, ReidlineInputMethod, RelineInputMethod, RubyLex, RubyModel, SourceFinder, Statement, StdioInputMethod, StdioOutputMethod, TypeCompletor, UndefinedPromptMode, UnrecognizedSwitch, Vec, WorkSpace

Constant Summary collapse

IRBRC_EXT = 
"rc"
VERSION =

:nodoc:

"1.11.1"
TOPLEVEL_BINDING = 
binding

Class Method Summary collapse

Class Method Details

.conf ⇒ Object

Displays current configuration.

Modifying the configuration is achieved by sending a message to IRB.conf.

See IRB@Configuration for more information.



15
16
17
 
# File 'lib/irb/init.rb', line 15

def IRB.conf
  @CONF
end

.CurrentContext ⇒ Object

The current Context in this session



868
869
870
 
# File 'lib/irb.rb', line 868

def IRB.CurrentContext
  IRB.conf[:MAIN_CONTEXT]
end

.init_config(ap_path) ⇒ Object 



64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
 
# File 'lib/irb/init.rb', line 64

def IRB.init_config(ap_path)
  # class instance variables
  @TRACER_INITIALIZED = false

  # default configurations
  unless ap_path and @CONF[:AP_NAME]
    ap_path = File.join(File.dirname(File.dirname(__FILE__)), "irb.rb")
  end
  @CONF[:VERSION] = version
  @CONF[:AP_NAME] = File::basename(ap_path, ".rb")

  @CONF[:IRB_NAME] = "irb"
  @CONF[:IRB_LIB_PATH] = File.dirname(__FILE__)

  @CONF[:RC] = true
  @CONF[:LOAD_MODULES] = []
  @CONF[:IRB_RC] = nil

  @CONF[:USE_SINGLELINE] = false unless defined?(ReadlineInputMethod)
  @CONF[:USE_COLORIZE] = (nc = ENV['NO_COLOR']).nil? || nc.empty?
  @CONF[:USE_AUTOCOMPLETE] = ENV.fetch("IRB_USE_AUTOCOMPLETE", "true") != "false"
  @CONF[:COMPLETOR] = ENV.fetch("IRB_COMPLETOR", "regexp").to_sym
  @CONF[:INSPECT_MODE] = true
  @CONF[:USE_TRACER] = false
  @CONF[:USE_LOADER] = false
  @CONF[:IGNORE_SIGINT] = true
  @CONF[:IGNORE_EOF] = false
  @CONF[:USE_PAGER] = true
  @CONF[:EXTRA_DOC_DIRS] = []
  @CONF[:ECHO] = nil
  @CONF[:ECHO_ON_ASSIGNMENT] = nil
  @CONF[:VERBOSE] = nil

  @CONF[:EVAL_HISTORY] = nil
  @CONF[:SAVE_HISTORY] = 1000

  @CONF[:BACK_TRACE_LIMIT] = 16

  @CONF[:PROMPT] = {
    :NULL => {
      :PROMPT_I => nil,
      :PROMPT_S => nil,
      :PROMPT_C => nil,
      :RETURN => "%s\n"
    },
    :DEFAULT => {
      :PROMPT_I => "%N(%m):%03n> ",
      :PROMPT_S => "%N(%m):%03n%l ",
      :PROMPT_C => "%N(%m):%03n* ",
      :RETURN => "=> %s\n"
    },
    :CLASSIC => {
      :PROMPT_I => "%N(%m):%03n:%i> ",
      :PROMPT_S => "%N(%m):%03n:%i%l ",
      :PROMPT_C => "%N(%m):%03n:%i* ",
      :RETURN => "%s\n"
    },
    :SIMPLE => {
      :PROMPT_I => ">> ",
      :PROMPT_S => "%l> ",
      :PROMPT_C => "?> ",
      :RETURN => "=> %s\n"
    },
    :INF_RUBY => {
      :PROMPT_I => "%N(%m):%03n> ",
      :PROMPT_S => nil,
      :PROMPT_C => nil,
      :RETURN => "%s\n",
      :AUTO_INDENT => true
    },
    :XMP => {
      :PROMPT_I => nil,
      :PROMPT_S => nil,
      :PROMPT_C => nil,
      :RETURN => "    ==>%s\n"
    }
  }

  @CONF[:PROMPT_MODE] = (STDIN.tty? ? :DEFAULT : :NULL)
  @CONF[:AUTO_INDENT] = true

  @CONF[:CONTEXT_MODE] = 4 # use a copy of TOPLEVEL_BINDING
  @CONF[:SINGLE_IRB] = false

  @CONF[:MEASURE] = false
  @CONF[:MEASURE_PROC] = {}
  @CONF[:MEASURE_PROC][:TIME] = proc { |context, code, line_no, &block|
    time = Time.now
    result = block.()
    now = Time.now
    puts 'processing time: %fs' % (now - time) if IRB.conf[:MEASURE]
    result
  }
  # arg can be either a symbol for the mode (:cpu, :wall, ..) or a hash for
  # a more complete configuration.
  # See https://github.com/tmm1/stackprof#all-options.
  @CONF[:MEASURE_PROC][:STACKPROF] = proc { |context, code, line_no, arg, &block|
    return block.() unless IRB.conf[:MEASURE]
    success = false
    begin
      require 'stackprof'
      success = true
    rescue LoadError
      puts 'Please run "gem install stackprof" before measuring by StackProf.'
    end
    if success
      result = nil
      arg = { mode: arg || :cpu } unless arg.is_a?(Hash)
      stackprof_result = StackProf.run(**arg) do
        result = block.()
      end
      case stackprof_result
      when File
        puts "StackProf report saved to #{stackprof_result.path}"
      when Hash
        StackProf::Report.new(stackprof_result).print_text
      else
        puts "Stackprof ran with #{arg.inspect}"
      end
      result
    else
      block.()
    end
  }
  @CONF[:MEASURE_CALLBACKS] = []

  @CONF[:LC_MESSAGES] = Locale.new

  @CONF[:AT_EXIT] = []

  @CONF[:COMMAND_ALIASES] = {
    # Symbol aliases
    :'$' => :show_source,
    :'@' => :whereami,
  }
end

.init_error ⇒ Object 



248
249
250
 
# File 'lib/irb/init.rb', line 248

def IRB.init_error
  @CONF[:LC_MESSAGES].load("irb/error.rb")
end

.initialize_tracer ⇒ Object

initialize tracing function



24
25
26
27
28
29
30
31
 
# File 'lib/irb/ext/tracer.rb', line 24

def IRB.initialize_tracer
  Tracer.verbose = false
  Tracer.add_filter {
    |event, file, line, id, binding, *rests|
    /^#{Regexp.quote(@CONF[:IRB_LIB_PATH])}/ !~ file and
      File::basename(file) != "irb.rb"
  }
end

.initialized? ⇒ Boolean

Returns:

  • (Boolean) 


45
46
47
 
# File 'lib/irb/init.rb', line 45

def IRB.initialized?
  !!@INITIALIZED
end

.inspect ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/irb/init.rb', line 19

def @CONF.inspect
  array = []
  for k, v in sort{|a1, a2| a1[0].id2name <=> a2[0].id2name}
    case k
    when :MAIN_CONTEXT, :__TMP__EHV__
      array.push format("CONF[:%s]=...myself...", k.id2name)
    when :PROMPT
      s = v.collect{
        |kk, vv|
        ss = vv.collect{|kkk, vvv| ":#{kkk.id2name}=>#{vvv.inspect}"}
        format(":%s=>{%s}", kk.id2name, ss.join(", "))
      }
      array.push format("CONF[:%s]={%s}", k.id2name, s.join(", "))
    else
      array.push format("CONF[:%s]=%s", k.id2name, v.inspect)
    end
  end
  array.join("\n")
end

.Inspector(inspect, init = nil) ⇒ Object

Convenience method to create a new Inspector, using the given inspect proc, and optional init proc and passes them to Inspector.new

irb(main):001:0> ins = IRB::Inspector(proc{ |v| "omg! #{v}" })
irb(main):001:0> IRB.CurrentContext.inspect_mode = ins # => omg! #<IRB::Inspector:0x007f46f7ba7d28>
irb(main):001:0> "what?" #=> omg! what?



17
18
19
 
# File 'lib/irb/inspector.rb', line 17

def IRB::Inspector(inspect, init = nil)
  Inspector.new(inspect, init)
end

.irb(file = nil, *main) ⇒ Object

Creates a new IRB session, see Irb.new.

The optional file argument is given to Context.new, along with the workspace created with the remaining arguments, see WorkSpace.new



182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
 
# File 'lib/irb/ext/multi-irb.rb', line 182

def IRB.irb(file = nil, *main)
  workspace = WorkSpace.new(*main)
  parent_thread = Thread.current
  Thread.start do
    begin
      irb = Irb.new(workspace, file)
    rescue
      print "Subirb can't start with context(self): ", workspace.main.inspect, "\n"
      print "return to main irb\n"
      Thread.pass
      Thread.main.wakeup
      Thread.exit
    end
    @CONF[:IRB_RC].call(irb.context) if @CONF[:IRB_RC]
    @JobManager.insert(irb)
    @JobManager.current_job = irb
    begin
      system_exit = false
      catch(:IRB_EXIT) do
        irb.eval_input
      end
    rescue SystemExit
      system_exit = true
      raise
      #fail
    ensure
      unless system_exit
        @JobManager.delete(irb)
        if @JobManager.current_job == irb
          if parent_thread.alive?
            @JobManager.current_job = @JobManager.irb(parent_thread)
            parent_thread.run
          else
            @JobManager.current_job = @JobManager.main_irb
            @JobManager.main_thread.run
          end
        end
      end
    end
  end
  Thread.stop
  @JobManager.current_job = @JobManager.irb(Thread.current)
end

.irb_abort(irb, exception = Abort) ⇒ Object

Aborts then interrupts irb.

Will raise an Abort exception, or the given exception.



895
896
897
 
# File 'lib/irb.rb', line 895

def IRB.irb_abort(irb, exception = Abort)
  irb.context.thread.raise exception, "abort then interrupt!"
end

.irb_exit ⇒ Object

Quits irb



888
889
890
 
# File 'lib/irb.rb', line 888

def IRB.irb_exit(*)
  throw :IRB_EXIT
end

.JobManager ⇒ Object

The current JobManager in the session



169
170
171
 
# File 'lib/irb/ext/multi-irb.rb', line 169

def IRB.JobManager
  @JobManager
end

.load_modules ⇒ Object

loading modules



454
455
456
457
458
459
460
461
462
 
# File 'lib/irb/init.rb', line 454

def IRB.load_modules
  for m in @CONF[:LOAD_MODULES]
    begin
      require m
    rescue LoadError => err
      warn "#{err.class}: #{err}", uplevel: 0
    end
  end
end

.parse_opts(argv: ::ARGV) ⇒ Object

option analyzing



253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
 
# File 'lib/irb/init.rb', line 253

def IRB.parse_opts(argv: ::ARGV)
  load_path = []
  while opt = argv.shift
    case opt
    when "-f"
      @CONF[:RC] = false
    when "-d"
      $DEBUG = true
      $VERBOSE = true
    when "-w"
      Warning[:deprecated] = $VERBOSE = true
    when /^-W(.+)?/
      opt = $1 || argv.shift
      case opt
      when "0"
        $VERBOSE = nil
      when "1"
        $VERBOSE = false
      else
        Warning[:deprecated] = $VERBOSE = true
      end
    when /^-r(.+)?/
      opt = $1 || argv.shift
      @CONF[:LOAD_MODULES].push opt if opt
    when /^-I(.+)?/
      opt = $1 || argv.shift
      load_path.concat(opt.split(File::PATH_SEPARATOR)) if opt
    when '-U'
      set_encoding("UTF-8", "UTF-8")
    when /^-E(.+)?/, /^--encoding(?:=(.+))?/
      opt = $1 || argv.shift
      set_encoding(*opt.split(':', 2))
    when "--inspect"
      if /^-/ !~ argv.first
        @CONF[:INSPECT_MODE] = argv.shift
      else
        @CONF[:INSPECT_MODE] = true
      end
    when "--noinspect"
      @CONF[:INSPECT_MODE] = false
    when "--no-pager"
      @CONF[:USE_PAGER] = false
    when "--singleline", "--readline", "--legacy"
      @CONF[:USE_SINGLELINE] = true
    when "--nosingleline", "--noreadline"
      @CONF[:USE_SINGLELINE] = false
    when "--multiline", "--reidline"
      if opt == "--reidline"
        warn <<~MSG.strip
          --reidline is deprecated, please use --multiline instead.
        MSG
      end

      @CONF[:USE_MULTILINE] = true
    when "--nomultiline", "--noreidline"
      if opt == "--noreidline"
        warn <<~MSG.strip
          --noreidline is deprecated, please use --nomultiline instead.
        MSG
      end

      @CONF[:USE_MULTILINE] = false
    when /^--extra-doc-dir(?:=(.+))?/
      opt = $1 || argv.shift
      @CONF[:EXTRA_DOC_DIRS] << opt
    when "--echo"
      @CONF[:ECHO] = true
    when "--noecho"
      @CONF[:ECHO] = false
    when "--echo-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = true
    when "--noecho-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = false
    when "--truncate-echo-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = :truncate
    when "--verbose"
      @CONF[:VERBOSE] = true
    when "--noverbose"
      @CONF[:VERBOSE] = false
    when "--colorize"
      @CONF[:USE_COLORIZE] = true
    when "--nocolorize"
      @CONF[:USE_COLORIZE] = false
    when "--autocomplete"
      @CONF[:USE_AUTOCOMPLETE] = true
    when "--noautocomplete"
      @CONF[:USE_AUTOCOMPLETE] = false
    when "--regexp-completor"
      @CONF[:COMPLETOR] = :regexp
    when "--type-completor"
      @CONF[:COMPLETOR] = :type
    when /^--prompt-mode(?:=(.+))?/, /^--prompt(?:=(.+))?/
      opt = $1 || argv.shift
      prompt_mode = opt.upcase.tr("-", "_").intern
      @CONF[:PROMPT_MODE] = prompt_mode
    when "--noprompt"
      @CONF[:PROMPT_MODE] = :NULL
    when "--script"
      noscript = false
    when "--noscript"
      noscript = true
    when "--inf-ruby-mode"
      @CONF[:PROMPT_MODE] = :INF_RUBY
    when "--sample-book-mode", "--simple-prompt"
      @CONF[:PROMPT_MODE] = :SIMPLE
    when "--tracer"
      @CONF[:USE_TRACER] = true
    when /^--back-trace-limit(?:=(.+))?/
      @CONF[:BACK_TRACE_LIMIT] = ($1 || argv.shift).to_i
    when /^--context-mode(?:=(.+))?/
      @CONF[:CONTEXT_MODE] = ($1 || argv.shift).to_i
    when "--single-irb"
      @CONF[:SINGLE_IRB] = true
    when "-v", "--version"
      print IRB.version, "\n"
      exit 0
    when "-h", "--help"
      require_relative "help"
      IRB.print_usage
      exit 0
    when "--"
      if !noscript && (opt = argv.shift)
        @CONF[:SCRIPT] = opt
        $0 = opt
      end
      break
    when /^-./
      fail UnrecognizedSwitch, opt
    else
      if noscript
        argv.unshift(opt)
      else
        @CONF[:SCRIPT] = opt
        $0 = opt
      end
      break
    end
  end

  load_path.collect! do |path|
    /\A\.\// =~ path ? path : File.expand_path(path)
  end
  $LOAD_PATH.unshift(*load_path)
end

.print_usage ⇒ Object

Outputs the irb help message, see IRB@Command-Line+Options.



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/irb/help.rb', line 9

def IRB.print_usage
  lc = IRB.conf[:LC_MESSAGES]
  path = lc.find("irb/help-message")
  space_line = false
  File.open(path){|f|
    f.each_line do |l|
      if /^\s*$/ =~ l
        lc.puts l unless space_line
        space_line = true
        next
      end
      space_line = false

      l.sub!(/#.*$/, "")
      next if /^\s*$/ =~ l
      lc.puts l
    end
  }
end

.rc_file(ext = IRBRC_EXT) ⇒ Object 



413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
 
# File 'lib/irb/init.rb', line 413

def IRB.rc_file(ext = IRBRC_EXT)
  if !@CONF[:RC_NAME_GENERATOR]
    rc_file_generators do |rcgen|
      @CONF[:RC_NAME_GENERATOR] ||= rcgen
      if File.exist?(rcgen.call(IRBRC_EXT))
        @CONF[:RC_NAME_GENERATOR] = rcgen
        break
      end
    end
  end
  case rc_file = @CONF[:RC_NAME_GENERATOR].call(ext)
  when String
    rc_file
  else
    fail IllegalRCNameGenerator
  end
end

.rc_file_generators {|proc{|rc| current_dir+"/.irb#{rc}"}| ... } ⇒ Object

enumerate possible rc-file base name generators

Yields:

  • (proc{|rc| current_dir+"/.irb#{rc}"}) 


432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
 
# File 'lib/irb/init.rb', line 432

def IRB.rc_file_generators
  if irbrc = ENV["IRBRC"]
    yield proc{|rc| rc == "rc" ? irbrc : irbrc+rc}
  end
  if xdg_config_home = ENV["XDG_CONFIG_HOME"]
    irb_home = File.join(xdg_config_home, "irb")
    if File.directory?(irb_home)
      yield proc{|rc| irb_home + "/irb#{rc}"}
    end
  end
  if home = ENV["HOME"]
    yield proc{|rc| home+"/.irb#{rc}"}
    yield proc{|rc| home+"/.config/irb/irb#{rc}"}
  end
  current_dir = Dir.pwd
  yield proc{|rc| current_dir+"/.irb#{rc}"}
  yield proc{|rc| current_dir+"/irb#{rc.sub(/\A_?/, '.')}"}
  yield proc{|rc| current_dir+"/_irb#{rc}"}
  yield proc{|rc| current_dir+"/$irb#{rc}"}
end

.run_config ⇒ Object

Run the config file



399
400
401
402
403
404
405
406
407
408
409
410
 
# File 'lib/irb/init.rb', line 399

def IRB.run_config
  if @CONF[:RC]
    begin
      file = rc_file
      # Because rc_file always returns `HOME/.irbrc` even if no rc file is present, we can't warn users about missing rc files.
      # Otherwise, it'd be very noisy.
      load file if File.exist?(file)
    rescue StandardError, ScriptError => e
      warn "Error loading RC file '#{file}':\n#{e.full_message(highlight: false)}"
    end
  end
end

.set_measure_callback(type = nil, arg = nil, &block) ⇒ Object 



201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
 
# File 'lib/irb/init.rb', line 201

def IRB.set_measure_callback(type = nil, arg = nil, &block)
  added = nil
  if type
    type_sym = type.upcase.to_sym
    if IRB.conf[:MEASURE_PROC][type_sym]
      added = [type_sym, IRB.conf[:MEASURE_PROC][type_sym], arg]
    end
  elsif IRB.conf[:MEASURE_PROC][:CUSTOM]
    added = [:CUSTOM, IRB.conf[:MEASURE_PROC][:CUSTOM], arg]
  elsif block_given?
    added = [:BLOCK, block, arg]
    found = IRB.conf[:MEASURE_CALLBACKS].find{ |m| m[0] == added[0] && m[2] == added[2] }
    if found
      found[1] = block
      return added
    else
      IRB.conf[:MEASURE_CALLBACKS] << added
      return added
    end
  else
    added = [:TIME, IRB.conf[:MEASURE_PROC][:TIME], arg]
  end
  if added
    IRB.conf[:MEASURE] = true
    found = IRB.conf[:MEASURE_CALLBACKS].find{ |m| m[0] == added[0] && m[2] == added[2] }
    if found
      # already added
      nil
    else
      IRB.conf[:MEASURE_CALLBACKS] << added if added
      added
    end
  else
    nil
  end
end

.setup(ap_path, argv: ::ARGV) ⇒ Object

initialize config



50
51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/irb/init.rb', line 50

def IRB.setup(ap_path, argv: ::ARGV)
  IRB.init_config(ap_path)
  IRB.init_error
  IRB.parse_opts(argv: argv)
  IRB.run_config
  IRB.load_modules

  unless @CONF[:PROMPT][@CONF[:PROMPT_MODE]]
    fail UndefinedPromptMode, @CONF[:PROMPT_MODE]
  end
  @INITIALIZED = true
end

.start(ap_path = nil) ⇒ Object

Initializes IRB and creates a new Irb.irb object at the TOPLEVEL_BINDING



873
874
875
876
877
878
879
880
881
882
883
884
885
 
# File 'lib/irb.rb', line 873

def IRB.start(ap_path = nil)
  STDOUT.sync = true
  $0 = File::basename(ap_path, ".rb") if ap_path

  IRB.setup(ap_path)

  if @CONF[:SCRIPT]
    irb = Irb.new(nil, @CONF[:SCRIPT])
  else
    irb = Irb.new
  end
  irb.run(@CONF)
end

.unset_measure_callback(type = nil) ⇒ Object 



238
239
240
241
242
243
244
245
246
 
# File 'lib/irb/init.rb', line 238

def IRB.unset_measure_callback(type = nil)
  if type.nil?
    IRB.conf[:MEASURE_CALLBACKS].clear
  else
    type_sym = type.upcase.to_sym
    IRB.conf[:MEASURE_CALLBACKS].reject!{ |t, | t == type_sym }
  end
  IRB.conf[:MEASURE] = nil if IRB.conf[:MEASURE_CALLBACKS].empty?
end

.version ⇒ Object

Returns the current version of IRB, including release version and last updated date.



41
42
43
 
# File 'lib/irb/init.rb', line 41

def IRB.version
  format("irb %s (%s)", @RELEASE_VERSION, @LAST_UPDATE_DATE)
end