1 files changed, 58 insertions, 7 deletions

diff --git a/lib/irb/input-method.rb b/lib/irb/input-method.rb
index 7227df4ca0..e1a680847c 100644
--- a/lib/irb/input-method.rb
+++ b/lib/irb/input-method.rb
@@ -12,34 +12,39 @@ require 'irb/src_encoding'
 require 'irb/magic-file'
 
 module IRB
-  #
-  # InputMethod
-  #	StdioInputMethod
-  #	FileInputMethod
-  #	(ReadlineInputMethod)
-  #
-  STDIN_FILE_NAME = "(line)"
+  STDIN_FILE_NAME = "(line)" # :nodoc:
   class InputMethod
     @RCS_ID='-$Id$-'
 
+    # Creates a new input method object
     def initialize(file = STDIN_FILE_NAME)
       @file_name = file
     end
+    # The file name of this input method, usually given during initialization.
     attr_reader :file_name
 
+    # The irb prompt associated with this input method
     attr_accessor :prompt
 
+    # Reads the next line from this input method.
+    #
+    # See IO#gets for more information.
     def gets
       IRB.fail NotImplementedError, "gets"
     end
     public :gets
 
+    # Whether this input method is still readable when there is no more data to
+    # read.
+    #
+    # See IO#eof for more information.
     def readable_atfer_eof?
       false
     end
   end
 
   class StdioInputMethod < InputMethod
+    # Creates a new input method object
     def initialize
       super
       @line_no = 0
@@ -48,40 +53,67 @@ module IRB
       @stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
     end
 
+    # Reads the next line from this input method.
+    #
+    # See IO#gets for more information.
     def gets
       print @prompt
       line = @stdin.gets
       @line[@line_no += 1] = line
     end
 
+    # Whether the end of this input method has been reached, returns +true+ if
+    # there is no more data to read.
+    #
+    # See IO#eof? for more information.
     def eof?
       @stdin.eof?
     end
 
+    # Whether this input method is still readable when there is no more data to
+    # read.
+    #
+    # See IO#eof for more information.
     def readable_atfer_eof?
       true
     end
 
+    # Returns the current line number for #io.
+    #
+    # #line counts the number of times #gets is called.
+    #
+    # See IO#lineno for more information.
     def line(line_no)
       @line[line_no]
     end
 
+    # The external encoding for standard input.
     def encoding
       @stdin.external_encoding
     end
   end
 
+  # Use a File for IO with irb, see InputMethod
   class FileInputMethod < InputMethod
+    # Creates a new input method object
     def initialize(file)
       super
       @io = IRB::MagicFile.open(file)
     end
+    # The file name of this input method, usually given during initialization.
     attr_reader :file_name
 
+    # Whether the end of this input method has been reached, returns +true+ if
+    # there is no more data to read.
+    #
+    # See IO#eof? for more information.
     def eof?
       @io.eof?
     end
 
+    # Reads the next line from this input method.
+    #
+    # See IO#gets for more information.
     def gets
       print @prompt
       l = @io.gets
@@ -89,6 +121,7 @@ module IRB
       l
     end
 
+    # The external encoding for standard input.
     def encoding
       @io.external_encoding
     end
@@ -98,6 +131,7 @@ module IRB
     require "readline"
     class ReadlineInputMethod < InputMethod
       include Readline
+      # Creates a new input method object using Readline
       def initialize
 	super
 
@@ -109,6 +143,9 @@ module IRB
 	@stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
       end
 
+      # Reads the next line from this input method.
+      #
+      # See IO#gets for more information.
       def gets
         Readline.input = @stdin
         Readline.output = @stdout
@@ -121,18 +158,32 @@ module IRB
 	end
       end
 
+      # Whether the end of this input method has been reached, returns +true+
+      # if there is no more data to read.
+      #
+      # See IO#eof? for more information.
       def eof?
 	@eof
       end
 
+      # Whether this input method is still readable when there is no more data to
+      # read.
+      #
+      # See IO#eof for more information.
       def readable_atfer_eof?
 	true
       end
 
+      # Returns the current line number for #io.
+      #
+      # #line counts the number of times #gets is called.
+      #
+      # See IO#lineno for more information.
       def line(line_no)
 	@line[line_no]
       end
 
+      # The external encoding for standard input.
       def encoding
 	@stdin.external_encoding
       end