From 4c786232d8b4061918c23140d0bd833d84fa825e Mon Sep 17 00:00:00 2001
From: Christopher <chrisgregan@gmail.com>
Date: Mon, 27 Jun 2016 18:42:50 +0100
Subject: [PATCH] Added Preprocessor support for LuaEnvironment / LuaUtils

---
 .../FungusLua/Scripts/LuaEnvironment.cs       | 20 +++++++++++++++++--
 .../Thirdparty/FungusLua/Scripts/LuaUtils.cs  |  8 ++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaEnvironment.cs b/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaEnvironment.cs
index dd0724ee..a7354f56 100644
--- a/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaEnvironment.cs
+++ b/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaEnvironment.cs
@@ -27,7 +27,12 @@ namespace Fungus
 			/// <summary>
 			/// Called when the LuaEnvironment is initializing.
 			/// </summary>
-			public abstract void Initialize();			
+			public abstract void Initialize();
+
+            /// <summary>
+            /// Applies transformations to the input script prior to execution.
+            /// </summary>
+            public abstract string PreprocessScript(string input);
 		}
 
         /// <summary>
@@ -216,11 +221,22 @@ namespace Fungus
         {
             InitEnvironment();
 
+            string processedString;
+            Initializer initializer = GetComponent<Initializer>();
+            if (initializer != null)
+            {
+                processedString = initializer.PreprocessScript(luaString);
+            }
+            else
+            {
+                processedString = luaString;
+            }
+
             // Load the Lua script
             DynValue res = null;
             try
             {
-                res = interpreter.LoadString(luaString, null, friendlyName);
+                res = interpreter.LoadString(processedString, null, friendlyName);
             }
             catch (InterpreterException ex)
             {
diff --git a/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaUtils.cs b/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaUtils.cs
index c2e68d7c..4e27b6fe 100644
--- a/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaUtils.cs
+++ b/Assets/Fungus/Thirdparty/FungusLua/Scripts/LuaUtils.cs
@@ -95,6 +95,14 @@ namespace Fungus
 			InitBindings();
         }
 
+        /// <summary>
+        /// Called by LuaEnvironment prior to executing a script.
+        /// </summary>
+        public override string PreprocessScript(string input)
+        {
+            return input;
+        }
+
 		/// <summary>
 		/// Registers all listed c# types for interop with Lua.
 		/// You can also register types directly in the Awake method of any