# frozen_string_literal: false

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#

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# irb/context.rb - irb context

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# $Release Version: 0.9.6$

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# $Revision$

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

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#

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# --

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#

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#

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#

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require_relative "workspace"

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require_relative "inspector"

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require_relative "input-method"

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require_relative "output-method"

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module IRB

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# A class that wraps the current state of the irb session, including the

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# configuration of IRB.conf.

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class Context

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# Creates a new IRB context.

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#

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# The optional +input_method+ argument:

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#

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# +nil+:: uses stdin or Reidline or Readline

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# +String+:: uses a File

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# +other+:: uses this as InputMethod

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def initialize(irb, workspace = nil, input_method = nil)

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@irb = irb

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if workspace

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@workspace = workspace

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else

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@workspace = WorkSpace.new

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end

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@thread = Thread.current if defined? Thread

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# copy of default configuration

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@ap_name = IRB.conf[:AP_NAME]

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@rc = IRB.conf[:RC]

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@load_modules = IRB.conf[:LOAD_MODULES]

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if IRB.conf.has_key?(:USE_SINGLELINE)

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@use_singleline = IRB.conf[:USE_SINGLELINE]

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elsif IRB.conf.has_key?(:USE_READLINE) # backward compatibility

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@use_singleline = IRB.conf[:USE_READLINE]

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else

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@use_singleline = nil

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end

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if IRB.conf.has_key?(:USE_MULTILINE)

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@use_multiline = IRB.conf[:USE_MULTILINE]

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elsif IRB.conf.has_key?(:USE_REIDLINE) # backward compatibility

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@use_multiline = IRB.conf[:USE_REIDLINE]

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else

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@use_multiline = nil

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end

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@use_colorize = IRB.conf[:USE_COLORIZE]

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@verbose = IRB.conf[:VERBOSE]

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@io = nil

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self.inspect_mode = IRB.conf[:INSPECT_MODE]

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self.use_tracer = IRB.conf[:USE_TRACER] if IRB.conf[:USE_TRACER]

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self.use_loader = IRB.conf[:USE_LOADER] if IRB.conf[:USE_LOADER]

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self.eval_history = IRB.conf[:EVAL_HISTORY] if IRB.conf[:EVAL_HISTORY]

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@ignore_sigint = IRB.conf[:IGNORE_SIGINT]

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@ignore_eof = IRB.conf[:IGNORE_EOF]

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@back_trace_limit = IRB.conf[:BACK_TRACE_LIMIT]

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self.prompt_mode = IRB.conf[:PROMPT_MODE]

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if IRB.conf[:SINGLE_IRB] or !defined?(IRB::JobManager)

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@irb_name = IRB.conf[:IRB_NAME]

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else

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@irb_name = IRB.conf[:IRB_NAME]+"#"+IRB.JobManager.n_jobs.to_s

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end

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@irb_path = "(" + @irb_name + ")"

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case input_method

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when nil

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@io = nil

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case use_multiline?

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when nil

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if STDIN.tty? && IRB.conf[:PROMPT_MODE] != :INF_RUBY && !use_singleline?

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# Both of multiline mode and singleline mode aren't specified.

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@io = ReidlineInputMethod.new

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else

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@io = nil

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end

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when false

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@io = nil

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when true

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@io = ReidlineInputMethod.new

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end

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unless @io

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case use_singleline?

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when nil

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if (defined?(ReadlineInputMethod) && STDIN.tty? &&

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IRB.conf[:PROMPT_MODE] != :INF_RUBY)

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@io = ReadlineInputMethod.new

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else

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@io = nil

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end

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when false

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@io = nil

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when true

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if defined?(ReadlineInputMethod)

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@io = ReadlineInputMethod.new

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else

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@io = nil

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end

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else

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@io = nil

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end

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end

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@io = StdioInputMethod.new unless @io

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when String

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@io = FileInputMethod.new(input_method)

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@irb_name = File.basename(input_method)

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@irb_path = input_method

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else

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@io = input_method

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end

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self.save_history = IRB.conf[:SAVE_HISTORY] if IRB.conf[:SAVE_HISTORY]

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@echo = IRB.conf[:ECHO]

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if @echo.nil?

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@echo = true

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end

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@echo_on_assignment = IRB.conf[:ECHO_ON_ASSIGNMENT]

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if @echo_on_assignment.nil?

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@echo_on_assignment = true

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end

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@omit_on_assignment = IRB.conf[:OMIT_ON_ASSIGNMENT]

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if @omit_on_assignment.nil?

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@omit_on_assignment = true

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end

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@newline_before_multiline_output = IRB.conf[:NEWLINE_BEFORE_MULTILINE_OUTPUT]

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if @newline_before_multiline_output.nil?

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@newline_before_multiline_output = true

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end

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end

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# The top-level workspace, see WorkSpace#main

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def main

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@workspace.main

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end

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# The toplevel workspace, see #home_workspace

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attr_reader :workspace_home

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# WorkSpace in the current context

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attr_accessor :workspace

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# The current thread in this context

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attr_reader :thread

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# The current input method

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#

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# Can be either StdioInputMethod, ReadlineInputMethod,

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# ReidlineInputMethod, FileInputMethod or other specified when the

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# context is created. See ::new for more # information on +input_method+.

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attr_accessor :io

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# Current irb session

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attr_accessor :irb

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# A copy of the default <code>IRB.conf[:AP_NAME]</code>

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attr_accessor :ap_name

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# A copy of the default <code>IRB.conf[:RC]</code>

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attr_accessor :rc

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# A copy of the default <code>IRB.conf[:LOAD_MODULES]</code>

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attr_accessor :load_modules

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# Can be either name from <code>IRB.conf[:IRB_NAME]</code>, or the number of

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# the current job set by JobManager, such as <code>irb#2</code>

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attr_accessor :irb_name

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# Can be either the #irb_name surrounded by parenthesis, or the

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# +input_method+ passed to Context.new

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attr_accessor :irb_path

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# Whether multiline editor mode is enabled or not.

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#

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# A copy of the default <code>IRB.conf[:USE_MULTILINE]</code>

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attr_reader :use_multiline

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# Whether singleline editor mode is enabled or not.

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#

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# A copy of the default <code>IRB.conf[:USE_SINGLELINE]</code>

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attr_reader :use_singleline

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# Whether colorization is enabled or not.

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#

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# A copy of the default <code>IRB.conf[:USE_COLORIZE]</code>

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attr_reader :use_colorize

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# A copy of the default <code>IRB.conf[:INSPECT_MODE]</code>

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attr_reader :inspect_mode

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# A copy of the default <code>IRB.conf[:PROMPT_MODE]</code>

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attr_reader :prompt_mode

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# Standard IRB prompt

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#

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

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attr_accessor :prompt_i

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# IRB prompt for continuated strings

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#

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

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attr_accessor :prompt_s

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

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#

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

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attr_accessor :prompt_c

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

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attr_accessor :prompt_n

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# Can be either the default <code>IRB.conf[:AUTO_INDENT]</code>, or the

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# mode set by #prompt_mode=

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#

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# To disable auto-indentation in irb:

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#

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# IRB.conf[:AUTO_INDENT] = false

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#

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# or

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#

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# irb_context.auto_indent_mode = false

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#

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# or

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#

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# IRB.CurrentContext.auto_indent_mode = false

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#

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# See IRB@Configuration for more information.

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attr_accessor :auto_indent_mode

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# The format of the return statement, set by #prompt_mode= using the

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# +:RETURN+ of the +mode+ passed to set the current #prompt_mode.

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attr_accessor :return_format

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# Whether <code>^C</code> (+control-c+) will be ignored or not.

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#

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# If set to +false+, <code>^C</code> will quit irb.

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#

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# If set to +true+,

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#

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# * during input: cancel input then return to top level.

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# * during execute: abandon current execution.

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attr_accessor :ignore_sigint

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# Whether <code>^D</code> (+control-d+) will be ignored or not.

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#

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# If set to +false+, <code>^D</code> will quit irb.

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attr_accessor :ignore_eof

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# Whether to echo the return value to output or not.

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#

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# Uses <code>IRB.conf[:ECHO]</code> if available, or defaults to +true+.

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#

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# puts "hello"

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# # hello

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# #=> nil

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# IRB.CurrentContext.echo = false

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# puts "omg"

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# # omg

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attr_accessor :echo

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# Whether to echo for assignment expressions

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#

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# Uses <code>IRB.conf[:ECHO_ON_ASSIGNMENT]</code> if available, or defaults to +true+.

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#

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# a = "omg"

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# #=> omg

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# IRB.CurrentContext.echo_on_assignment = false

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# a = "omg"

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attr_accessor :echo_on_assignment

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# Whether to omit echo for assignment expressions

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#

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# Uses <code>IRB.conf[:OMIT_ON_ASSIGNMENT]</code> if available, or defaults to +true+.

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#

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# a = [1] * 10

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# #=> [1, 1, 1, 1, 1, 1, 1, 1, ...

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# [1] * 10

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# #=> [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

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# IRB.CurrentContext.omit_on_assignment = false

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# a = [1] * 10

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# #=> [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

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# [1] * 10

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# #=> [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

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attr_accessor :omit_on_assignment

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# Whether a newline is put before multiline output.

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#

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# Uses <code>IRB.conf[:NEWLINE_BEFORE_MULTILINE_OUTPUT]</code> if available,

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# or defaults to +true+.

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#

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# "abc\ndef"

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# #=>

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# abc

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# def

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# IRB.CurrentContext.newline_before_multiline_output = false

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# "abc\ndef"

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# #=> abc

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# def

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attr_accessor :newline_before_multiline_output

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# Whether verbose messages are displayed or not.

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#

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# A copy of the default <code>IRB.conf[:VERBOSE]</code>

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attr_accessor :verbose

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

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#

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# The default value is 16.

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#

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

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#

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

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attr_accessor :back_trace_limit

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# Alias for #use_multiline

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alias use_multiline? use_multiline

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# Alias for #use_singleline

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alias use_singleline? use_singleline

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# backward compatibility

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alias use_reidline use_multiline

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# backward compatibility

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alias use_reidline? use_multiline

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# backward compatibility

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alias use_readline use_singleline

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# backward compatibility

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alias use_readline? use_singleline

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# Alias for #use_colorize

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alias use_colorize? use_colorize

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# Alias for #rc

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alias rc? rc

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alias ignore_sigint? ignore_sigint

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alias ignore_eof? ignore_eof

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alias echo? echo

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alias echo_on_assignment? echo_on_assignment

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alias omit_on_assignment? omit_on_assignment

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alias newline_before_multiline_output? newline_before_multiline_output

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# Returns whether messages are displayed or not.

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def verbose?

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if @verbose.nil?

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if @io.kind_of?(ReidlineInputMethod)

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false

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elsif defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)

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false

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elsif !STDIN.tty? or @io.kind_of?(FileInputMethod)

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true

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else

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false

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end

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else

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@verbose

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end

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end

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# Whether #verbose? is +true+, and +input_method+ is either

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# StdioInputMethod or ReidlineInputMethod or ReadlineInputMethod, see #io

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# for more information.

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def prompting?

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verbose? || (STDIN.tty? && @io.kind_of?(StdioInputMethod) ||

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@io.kind_of?(ReidlineInputMethod) ||

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(defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)))

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end

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# The return value of the last statement evaluated.

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attr_reader :last_value

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

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# to #last_value.

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def set_last_value(value)

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@last_value = value

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@workspace.local_variable_set :_, value

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end

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# Sets the +mode+ of the prompt in this context.

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#

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

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def prompt_mode=(mode)

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@prompt_mode = mode

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pconf = IRB.conf[:PROMPT][mode]

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@prompt_i = pconf[:PROMPT_I]

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@prompt_s = pconf[:PROMPT_S]

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@prompt_c = pconf[:PROMPT_C]

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@prompt_n = pconf[:PROMPT_N]

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@return_format = pconf[:RETURN]

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if ai = pconf.include?(:AUTO_INDENT)

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@auto_indent_mode = ai

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else

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@auto_indent_mode = IRB.conf[:AUTO_INDENT]

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end

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end

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

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def inspect?

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@inspect_mode.nil? or @inspect_mode

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end

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# Whether #io uses a File for the +input_method+ passed when creating the

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# current context, see ::new

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def file_input?

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@io.class == FileInputMethod

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end

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# Specifies the inspect mode with +opt+:

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#

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# +true+:: display +inspect+

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# +false+:: display +to_s+

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# +nil+:: inspect mode in non-math mode,

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# non-inspect mode in math mode

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#

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# See IRB::Inspector for more information.

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#

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# Can also be set using the +--inspect+ and +--noinspect+ command line

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# options.

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#

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

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def inspect_mode=(opt)

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if i = Inspector::INSPECTORS[opt]

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@inspect_mode = opt

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@inspect_method = i

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i.init

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else

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case opt

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when nil

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if Inspector.keys_with_inspector(Inspector::INSPECTORS[true]).include?(@inspect_mode)

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self.inspect_mode = false

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elsif Inspector.keys_with_inspector(Inspector::INSPECTORS[false]).include?(@inspect_mode)

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self.inspect_mode = true

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else

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puts "Can't switch inspect mode."

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return

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end

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when /^\s*\{.*\}\s*$/

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begin

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inspector = eval "proc#{opt}"

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rescue Exception

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puts "Can't switch inspect mode(#{opt})."

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return

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end

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self.inspect_mode = inspector

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when Proc

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self.inspect_mode = IRB::Inspector(opt)

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when Inspector

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prefix = "usr%d"

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i = 1

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while Inspector::INSPECTORS[format(prefix, i)]; i += 1; end

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@inspect_mode = format(prefix, i)

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@inspect_method = opt

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Inspector.def_inspector(format(prefix, i), @inspect_method)

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else

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puts "Can't switch inspect mode(#{opt})."

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return

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end

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end

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print "Switch to#{unless @inspect_mode; ' non';end} inspect mode.\n" if verbose?

[447] Fix | Delete

@inspect_mode

[448] Fix | Delete

end

[449] Fix | Delete

[450] Fix | Delete

def evaluate(line, line_no, exception: nil) # :nodoc:

[451] Fix | Delete

@line_no = line_no

[452] Fix | Delete

if exception

[453] Fix | Delete

line_no -= 1

[454] Fix | Delete

line = "begin ::Kernel.raise _; rescue _.class\n#{line}\n""end"

[455] Fix | Delete

@workspace.local_variable_set(:_, exception)

[456] Fix | Delete

end

[457] Fix | Delete

set_last_value(@workspace.evaluate(self, line, irb_path, line_no))

[458] Fix | Delete

end

[459] Fix | Delete

[460] Fix | Delete

def inspect_last_value # :nodoc:

[461] Fix | Delete

@inspect_method.inspect_value(@last_value)

[462] Fix | Delete

end

[463] Fix | Delete

[464] Fix | Delete

alias __exit__ exit

[465] Fix | Delete

# Exits the current session, see IRB.irb_exit

[466] Fix | Delete

def exit(ret = 0)

[467] Fix | Delete

IRB.irb_exit(@irb, ret)

[468] Fix | Delete

end

[469] Fix | Delete

[470] Fix | Delete

NOPRINTING_IVARS = ["@last_value"] # :nodoc:

[471] Fix | Delete

NO_INSPECTING_IVARS = ["@irb", "@io"] # :nodoc:

[472] Fix | Delete

IDNAME_IVARS = ["@prompt_mode"] # :nodoc:

[473] Fix | Delete

[474] Fix | Delete

alias __inspect__ inspect

[475] Fix | Delete

def inspect # :nodoc:

[476] Fix | Delete

array = []

[477] Fix | Delete

for ivar in instance_variables.sort{|e1, e2| e1 <=> e2}

[478] Fix | Delete

ivar = ivar.to_s

[479] Fix | Delete

name = ivar.sub(/^@(.*)$/, '\1')

[480] Fix | Delete

val = instance_eval(ivar)

[481] Fix | Delete

case ivar

[482] Fix | Delete

when *NOPRINTING_IVARS

[483] Fix | Delete

array.push format("conf.%s=%s", name, "...")

[484] Fix | Delete

when *NO_INSPECTING_IVARS

[485] Fix | Delete

array.push format("conf.%s=%s", name, val.to_s)

[486] Fix | Delete

when *IDNAME_IVARS

[487] Fix | Delete

array.push format("conf.%s=:%s", name, val.id2name)

[488] Fix | Delete

else

[489] Fix | Delete

array.push format("conf.%s=%s", name, val.inspect)

[490] Fix | Delete

end

[491] Fix | Delete

end

[492] Fix | Delete

array.join("\n")

[493] Fix | Delete

end

[494] Fix | Delete

alias __to_s__ to_s

[495] Fix | Delete

alias to_s inspect

[496] Fix | Delete

end

[497] Fix | Delete

end

[498] Fix | Delete

[499] Fix | Delete