1 files changed, 47 insertions, 0 deletions
diff --git a/acf/model/combination.lua b/acf/model/combination.lua
new file mode 100644
index 0000000..7228233
--- /dev/null
+++ b/acf/model/combination.lua
@@ -0,0 +1,47 @@
+--[[
+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