Initial project with Context and Variable.

Stencil/Context.swift

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+//
+//  Context.swift
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+import Foundation
+
+/// A container for template variables.
+public class Context : Equatable {
+    var dictionaries:[Dictionary<String, AnyObject>]
+
+    public init(dictionary:Dictionary<String, AnyObject>) {
+        dictionaries = [dictionary]
+    }
+
+    public subscript(key: String) -> AnyObject? {
+        get {
+            for dictionary in reverse(dictionaries) {
+                if let value:AnyObject = dictionary[key] {
+                    return value
+                }
+            }
+
+            return nil
+        }
+
+        set(value) {
+            if dictionaries.count > 0 {
+                var dictionary = dictionaries.removeLast()
+                dictionary[key] = value
+                dictionaries.append(dictionary)
+            }
+        }
+    }
+
+    public func push() {
+        push(Dictionary<String, String>())
+    }
+
+    public func push(dictionary:Dictionary<String, String>) {
+        dictionaries.append(dictionary)
+    }
+
+    public func pop() {
+        dictionaries.removeLast()
+    }
+}
+
+public func ==(lhs:Context, rhs:Context) -> Bool {
+    return lhs.dictionaries == rhs.dictionaries
+}

Stencil/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.cocode.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2014 Cocode. All rights reserved.</string>
+	<key>NSPrincipalClass</key>
+	<string></string>
+</dict>
+</plist>

Stencil/Stencil.h

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+//
+//  Stencil.h
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+//! Project version number for Stencil.
+FOUNDATION_EXPORT double StencilVersionNumber;
+
+//! Project version string for Stencil.
+FOUNDATION_EXPORT const unsigned char StencilVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <Stencil/PublicHeader.h>
+
+

Stencil/Variable.swift

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+//
+//  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
+    }
+}