class Reline::KillRing - RDoc Documentation

# class Reline::KillRing

### Constants

RingPoint

### Public Class Methods

new(max = 1024) click to toggle source

    # File lib/reline/kill_ring.rb, line 61
    def initialize(max = 1024)
      @ring = RingBuffer.new(max)
      @ring_pointer = nil
      @buffer = nil
      @state = State::FRESH
    end

### Public Instance Methods

append(string, before_p = false) click to toggle source

    # File lib/reline/kill_ring.rb, line 68
    def append(string, before_p = false)
      case @state
      when State::FRESH, State::YANK
        @ring << RingPoint.new(string)
        @state = State::CONTINUED
      when State::CONTINUED, State::PROCESSED
        if before_p
          @ring.head.str.prepend(string)
        else
          @ring.head.str.concat(string)
        end
        @state = State::CONTINUED
      end
    end

each() { |str| ... } click to toggle source

    # File lib/reline/kill_ring.rb, line 116
    def each
      start = head = @ring.head
      loop do
        break if head.nil?
        yield head.str
        head = head.backward
        break if head == start
      end
    end

process() click to toggle source

    # File lib/reline/kill_ring.rb, line 83
    def process
      case @state
      when State::FRESH
        # nothing to do
      when State::CONTINUED
        @state = State::PROCESSED
      when State::PROCESSED
        @state = State::FRESH
      when State::YANK
        # nothing to do
      end
    end

yank() click to toggle source

    # File lib/reline/kill_ring.rb, line 96
    def yank
      unless @ring.empty?
        @state = State::YANK
        @ring_pointer = @ring.head
        @ring_pointer.str
      else
        nil
      end
    end

yank_pop() click to toggle source

    # File lib/reline/kill_ring.rb, line 106
    def yank_pop
      if @state == State::YANK
        prev_yank = @ring_pointer.str
        @ring_pointer = @ring_pointer.backward
        [@ring_pointer.str, prev_yank]
      else
        nil
      end
    end