diff --git a/src/compilation.rs b/src/compilation.rs
index c92e6d1..f11f21f 100644
--- a/src/compilation.rs
+++ b/src/compilation.rs
@@ -8,7 +8,7 @@ use self::iron_llvm::core;
 use self::iron_llvm::core::types::{RealTypeCtor, RealTypeRef};
 use self::iron_llvm::{LLVMRef, LLVMRefCtor};
 
-use parser::{ParseResult, AST, ASTNode};
+use parser::{ParseResult, AST, ASTNode, Prototype, Expression};
 
 pub struct Context {
     context: core::Context,
@@ -96,3 +96,19 @@ impl IRBuilder for AST {
         result
     }
 }
+
+impl IRBuilder for ASTNode {
+    fn codegen(&self, context: &mut Context, module_provider: &mut ModuleProvider) -> IRBuildingResult {
+        match self {
+            &ASTNode::ExprNode(ref expression) => expression.codegen(context, module_provider),
+            &ASTNode::FuncNode(ref function) => function.codegen(context, module_provider),
+        }
+    }
+}
+
+impl IRBuilder for Function {
+    fn codegen(&self, context: &mut Context, module_provider: &mut ModuleProvider) -> IRBuildingResult {
+
+
+    }
+}