Initial project with Context and Variable.

Stencil/Variable.swift

@@ -0,0 +1,51 @@
+//
+//  Variable.swift
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+import Foundation
+
+public struct Variable {
+    public let variable:String
+
+    public init(_ variable:String) {
+        self.variable = variable
+    }
+
+    private func lookup() -> [String] {
+        return variable.componentsSeparatedByString(".")
+    }
+
+    public func resolve(context:Context) -> AnyObject? {
+        var current:AnyObject? = context
+
+        if (variable.hasPrefix("'") && variable.hasSuffix("'")) || (variable.hasPrefix("\"") && variable.hasSuffix("\"")) {
+            return variable.substringWithRange(variable.startIndex.successor() ..< variable.endIndex.predecessor())
+        }
+
+        for bit in lookup() {
+            if let context = current as? Context {
+                current = context[bit]
+            } else if let dictionary = current as? Dictionary<String, AnyObject> {
+                current = dictionary[bit]
+            } else if let array = current as? [AnyObject] {
+                if let index = bit.toInt() {
+                    current = array[index]
+                } else if bit == "first" {
+                    current = array.first
+                } else if bit == "last" {
+                    current = array.last
+                }
+            } else if let object = current as? NSObject {
+                current = object.valueForKey(bit)
+            } else {
+                return nil
+            }
+        }
+
+        return current
+    }
+}