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Class: XMP::StringInputMethod

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::IRB::InputMethod
Instance Chain:
self, ::IRB::InputMethod
Inherits: IRB::InputMethod
Defined in: lib/irb/xmp.rb

Overview

A custom InputMethod class used by ::XMP for evaluating string io.

Class Method Summary

::IRB::InputMethod - Inherited

.new

Creates a new input method object.

Instance Attribute Summary

::IRB::InputMethod - Inherited

#prompt

The irb prompt associated with this input method.
#file_name

The file name of this input method, usually given during initialization.
#readable_after_eof?

Whether this input method is still readable when there is no more data to read.

Instance Method Summary

  • #gets

    Reads the next expression from this printer.

  • #puts(exps)

    Concatenates all expressions in this printer, separated by newlines.

::IRB::InputMethod - Inherited

#gets

Reads the next line from this input method.

Constructor Details

.new ⇒ StringInputMethod

Creates a new StringInputMethod object

[ GitHub ] 

  


# File 'lib/irb/xmp.rb', line 101



def initialize
  super
  @exps = []
end


  







Instance Attribute Details



  

    #encoding   (readonly)
  



  

    

Returns the encoding of last expression printed by #puts.


  



  [ GitHub ]


  

  


# File 'lib/irb/xmp.rb', line 143



attr_reader :encoding


  








  

    #eof?  ⇒ Boolean  (readonly)
  



  

    

Whether there are any expressions left in this printer.


  





  


  [ GitHub ]


  

  


# File 'lib/irb/xmp.rb', line 107



def eof?
  @exps.empty?
end


  







Instance Method Details



  

    #gets  
  



  

    

Reads the next expression from this printer.



See IO#gets for more information.


  



  [ GitHub ]


  

  


# File 'lib/irb/xmp.rb', line 114



def gets
  while l = @exps.shift
    next if /^\s+$/ =~ l
    l.concat "\n"
    print @prompt, l
    break
  end
  l
end


  








  

    #puts(exps)  
  



  

    

Concatenates all expressions in this printer, separated by newlines.



An Encoding::CompatibilityError is raised of the given exps's encoding doesn't match the previous expression evaluated.


  



  [ GitHub ]


  

  


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



def puts(exps)
  if @encoding and exps.encoding != @encoding
    enc = Encoding.compatible?(@exps.join("\n"), exps)
    if enc.nil?
      raise Encoding::CompatibilityError, "Encoding in which the passed expression is encoded is not compatible to the preceding's one"
    else
      @encoding = enc
    end
  else
    @encoding = exps.encoding
  end
  @exps.concat exps.split(/\n/)
end