Class: Ohbjects::OptionBuilder

Inherits:
Object
  • Object
show all
Extended by:
Buildable
Defined in:
lib/ohbjects/options.rb

Constant Summary collapse

METHOD_LOOKUP = 
{
  :optionRoot  => :root,
  :strikePrice => :strike,
  :expDate     => :expires,
  :bidSize     => :bids,
  :askSize     => :asks
}

Instance Attribute Summary

Attributes included from Buildable

#spec

Class Method Summary collapse

Methods included from Buildable

build?, builds, extended, underscore

Class Method Details

.build(fragment) ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/ohbjects/options.rb', line 16

def build(fragment)
  put, call = Put.new, Call.new

  fragment.attributes.each do |key, attr|
    match = key.match(/^(call|put)?(.*)$/)

    option_type, method = match.captures

    method = METHOD_LOOKUP[method.to_sym] || underscore(method)
    setter = "#{method}="

    value  = attr.value

    if option_type
      option = option_type == "call" ? call : put
      option.send(setter, value) if option.respond_to?(setter)
    else
      [put, call].each do |option|
        option.send(setter, value) if option.respond_to?(setter)
      end
    end
  end

  [put, call]
end