--[[
Copyright (c) 2012-2013 Kaarle Ritvanen
See LICENSE file for license details
--]]

module(..., package.seeall)

local err = require('acf.error')
local raise = err.raise

local fld = require('acf.model.field')
local String = fld.String

local to_field = require('acf.model.model').to_field

local object = require('acf.object')
local class = object.class
local super = object.super


require 'stringy'


Range = class(String)

function Range:init(params)
   super(self, Range):init(params)
   if not self.type then self.type = fld.Integer end
end

function Range:validate(context, value)
   local comps = stringy.split(value, '-')
   if #comps > 2 then raise(context.path, 'Invalid range') end
   for _, v in ipairs(comps) do to_field(self.type):_validate(context, v) end
end


Union = class(String)

function Union:validate(context, value)
   super(self, Union):validate(context, value)
   for _, tpe in ipairs(self.types) do
      local field = to_field(tpe)
      if err.call(field.validate, field, context, value) then return end
   end
   raise(context.path, self.error or 'Invalid value')
end