In Files

Stream::ReversedStream

Each reversable stream (a stream that implements backward and at_beginning?) can be wrapped by a ReversedStream.

A ReversedStream is created by the method reverse:

(1..6).create_stream.reverse.to_a ==> [6, 5, 4, 3, 2, 1]

Public Class Methods

new(otherStream) click to toggle source

Create a reversing wrapper for the reversable stream otherStream. If otherStream does not support backward moving a NotImplementedError is signaled on the first backward move.

# File lib/stream.rb, line 311
def initialize (otherStream)
  super otherStream
  set_to_begin
end

Public Instance Methods

at_beginning?() click to toggle source

Returns true if the wrapped stream is at_end?.

# File lib/stream.rb, line 317
def at_beginning?; wrapped_stream.at_end?; end
at_end?() click to toggle source

Returns true if the wrapped stream is at_beginning?.

# File lib/stream.rb, line 319
def at_end?; wrapped_stream.at_beginning?; end
basic_backward() click to toggle source

Moves the wrapped stream one step forward.

# File lib/stream.rb, line 324
def basic_backward; wrapped_stream.basic_forward; end
basic_forward() click to toggle source

Moves the wrapped stream one step backward.

# File lib/stream.rb, line 322
def basic_forward; wrapped_stream.basic_backward; end
set_to_begin() click to toggle source

Sets the wrapped stream to the end.

# File lib/stream.rb, line 329
def set_to_begin; wrapped_stream.set_to_end; end
set_to_end() click to toggle source

Sets the wrapped stream to the beginning.

# File lib/stream.rb, line 327
def set_to_end; wrapped_stream.set_to_begin; end

[Validate]

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