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diff --git a/src/mem/slicc/ast/VarExprAST.cc b/src/mem/slicc/ast/VarExprAST.cc
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+++ b/src/mem/slicc/ast/VarExprAST.cc
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+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * VarExprAST.C
+ *
+ * Description: See VarExprAST.h
+ *
+ * $Id$
+ *
+ */
+
+#include "VarExprAST.hh"
+#include "StatementAST.hh"
+#include "SymbolTable.hh"
+
+VarExprAST::~VarExprAST()
+{
+  delete m_var_ptr;
+}
+
+
+Var* VarExprAST::getVar() const
+{
+  string var = *m_var_ptr;
+  Var* var_ptr = g_sym_table.getVar(var);
+  if (var_ptr == NULL) {
+    error("Unrecognized variable: " + var);
+  }
+  return var_ptr;
+}
+
+void VarExprAST::assertType(string type_ident) const
+{
+  Type* expected_type_ptr = g_sym_table.getType(type_ident);
+  if (expected_type_ptr == NULL) {
+    error("There must be a type '" + type_ident + "' declared in this scope");
+  }
+
+  if (getVar()->getType() != expected_type_ptr) {
+    error("Incorrect type: '" + getVar()->getIdent() + "' is expected to be type '" + expected_type_ptr->toString() + "'");
+  }
+}
+
+Type* VarExprAST::generate(string& code) const
+{
+  Var* var_ptr = getVar();
+  code += var_ptr->getCode();
+  return var_ptr->getType();
+}