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diff --git a/MLKLexicalContext-MLKLLVMCompilation.mm b/MLKLexicalContext-MLKLLVMCompilation.mm
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+++ b/MLKLexicalContext-MLKLLVMCompilation.mm
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+/* -*- mode: objc; coding: utf-8 -*- */
+/* Toilet Lisp, a Common Lisp subset for the Étoilé runtime.
+ * Copyright (C) 2008  Matthias Andreas Benkard.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "MLKLexicalContext-MLKLLVMCompilation.h"
+
+#import <Foundation/NSString.h>
+#import <Foundation/NSValue.h>
+
+#include <vector>
+#include <llvm/Value.h>
+#include <llvm/BasicBlock.h>
+using namespace llvm;
+using namespace std;
+
+
+@implementation MLKLexicalContext (MLKLLVMCompilation)
+-(void) setVariableHeapAllocation:(BOOL)heapp
+                        forSymbol:(id)name
+{
+  [self setDeepProperty:[NSNumber numberWithBool:heapp]
+        forVariable:name
+        key:@"LLVM.heap-flag"];
+}
+
+-(BOOL) variableHeapAllocationForSymbol:(id)name;
+{
+  id flag = [self deepPropertyForVariable:name
+                  key:@"LLVM.heap-flag"];
+
+  return (flag && [flag boolValue]);
+}
+
+-(Value *) functionCellForSymbol:(id)name
+{
+  return (Value *) [[self deepPropertyForFunction:name
+                          key:@"LLVM.function-cell"]
+                     pointerValue];
+}
+
+-(Value *) closureDataPointerForSymbol:(id)name
+{
+  return (Value *) [[self deepPropertyForFunction:name
+                          key:@"LLVM.closure-data-pointer"]
+                     pointerValue];
+}
+
+-(Value *) bindingForSymbol:(id)name
+{
+  return (Value *) [[self deepPropertyForVariable:name
+                          key:@"LLVM.variable-binding"]
+                     pointerValue];
+}
+
+-(Value *) valueForSymbol:(id)name
+{
+  return (Value *) [[self deepPropertyForVariable:name
+                          key:@"LLVM.variable-value"]
+                     pointerValue];
+}
+@end