class PathBuilder

# File lib/path-builder.rb, line 18
def [](*args)
  if @base_args
    @base_args += args
  else
    @base_args = args
  end
  self
end

# File lib/path-builder.rb, line 29
def base_args
  @base_args ||= []
end

# File lib/path-builder.rb, line 26
def base_args=(v)
  @base_args = v
end

# File lib/path-builder.rb, line 15
def base_path
  @base_path ||= []
end

# File lib/path-builder.rb, line 12
def base_path=(path)
  @base_path = path
end

# File lib/path-builder.rb, line 32
def break_on_empty
  @break_on_empty.nil? ? superclass.respond_to?(:break_on_empty) && superclass.break_on_empty : @break_on_empty
end

# File lib/path-builder.rb, line 35
def break_on_empty=(v)
  @break_on_empty = v
end

# File lib/path-builder.rb, line 2
def initialize(*segments)
  @path = self.class.base_path.dup
  @args = self.class.base_args.dup
  self.call(*segments)
end

# File lib/path-builder.rb, line 9
def version
  "0.1.3"
end

# File lib/path-builder.rb, line 69
def +(other)
  @path += other.path!
  @args += other.args!
  self
end

# File lib/path-builder.rb, line 65
def -(number)
  @path.pop number
end

# File lib/path-builder.rb, line 53
def [](*args, break_on_empty: self.class.break_on_empty)
  @args += args
  @path.map do |segment|
    if segment.is_a? Symbol
      @args.shift || (break_on_empty ? nil : segment)
    else
      segment
    end
  end.take_while{|i|i}.join('/') << '/'
end

# File lib/path-builder.rb, line 79
def args!
  @args
end

# File lib/path-builder.rb, line 48
def call(*segments)
  @path += segments.flat_map{ |s| s.split('/') }
  self
end

# File lib/path-builder.rb, line 90
def inspect
  "#<#{self.class.name} /#{@path.map(&:inspect).join('/')}>"
end

# File lib/path-builder.rb, line 41
def method_missing(segment, *args)
  @path << segment.to_s
  @path += args.map{ |a| a.to_sym }
  self
end

# File lib/path-builder.rb, line 75
def path!
  @path
end

# File lib/path-builder.rb, line 83
def save!(break_on_empty: nil)
  klass = Class.new self.class
  klass.base_path = @path
  klass.break_on_empty = break_on_empty unless break_on_empty.nil?
  klass
end