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PATH: opt / alt / ruby34 / share / gems / gems / irb-1.14.3 / lib / irb / command

# frozen_string_literal: true

module IRB
  module Command
    class ShowDoc < Base
      include RubyArgsExtractor

category "Context"
      description "Look up documentation with RI."

help_message <<~HELP_MESSAGE
        Usage: show_doc [name]

When name is provided, IRB will look up the documentation for the given name.
        When no name is provided, a RI session will be started.

Examples:

show_doc
          show_doc Array
          show_doc Array#each

HELP_MESSAGE

def execute(arg)
        # Accept string literal for backward compatibility
        name = unwrap_string_literal(arg)
        require 'rdoc/ri/driver'

unless ShowDoc.const_defined?(:Ri)
          opts = RDoc::RI::Driver.process_args([])
          ShowDoc.const_set(:Ri, RDoc::RI::Driver.new(opts))
        end

if name.nil?
          Ri.interactive
        else
          begin
            Ri.display_name(name)
          rescue RDoc::RI::Error
            puts $!.message
          end
        end

nil
      rescue LoadError, SystemExit
        warn "Can't display document because `rdoc` is not installed."
      end
    end
  end
end

[-] subirb.rb [edit]
[-] catch.rb [edit]
[-] continue.rb [edit]
[-] force_exit.rb [edit]
[-] chws.rb [edit]
[-] load.rb [edit]
[-] break.rb [edit]
[-] whereami.rb [edit]
[-] history.rb [edit]
[-] disable_irb.rb [edit]
[-] irb_info.rb [edit]
[-] show_source.rb [edit]
[-] next.rb [edit]
[-] delete.rb [edit]
[-] finish.rb [edit]
[-] step.rb [edit]
[-] debug.rb [edit]
[-] show_doc.rb [edit]
[-] internal_helpers.rb [edit]
[-] info.rb [edit]
[-] pushws.rb [edit]
[-] help.rb [edit]
[-] base.rb [edit]
[-] backtrace.rb [edit]
[-] ls.rb [edit]
[-] cd.rb [edit]
[+] ..
[-] edit.rb [edit]
[-] measure.rb [edit]
[-] exit.rb [edit]
[-] context.rb [edit]