--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/NodeFactory.java	Fri Dec 21 10:45:37 2012 -0800
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.sl;
+
+import java.io.*;
+import java.math.*;
+import java.util.*;
+
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.sl.nodes.*;
+import com.oracle.truffle.sl.ops.*;
+import com.oracle.truffle.sl.types.*;
+
+public class NodeFactory {
+
+    private final HashMap<String, FunctionDefinitionNode> functions;
+    private final PrintStream printOutput;
+
+    private FrameDescriptor frameDescriptor;
+    private TypedNode returnValue;
+
+    public NodeFactory(PrintStream printOutput) {
+        this.functions = new HashMap<>();
+        this.printOutput = printOutput;
+    }
+
+    public FunctionDefinitionNode findFunction(String name) {
+        return functions.get(name);
+    }
+
+    public void startFunction() {
+        frameDescriptor = new FrameDescriptor(TypesGen.TYPES);
+    }
+
+    public void createFunction(StatementNode body, String name) {
+        functions.put(name, new FunctionDefinitionNode(body, frameDescriptor, name, returnValue));
+    }
+
+    public TypedNode createLocal(String name) {
+        return ReadLocalOpFactory.create(frameDescriptor.findOrAddFrameSlot(name));
+    }
+
+    public TypedNode createStringLiteral(String value) {
+        return StringLiteralFactory.create(value);
+    }
+
+    public StatementNode createAssignment(String name, TypedNode right) {
+        return WriteLocalOpFactory.create(right, frameDescriptor.findOrAddFrameSlot(name));
+    }
+
+    public StatementNode createPrint(List<TypedNode> expressions) {
+        return new PrintNode(expressions, printOutput);
+    }
+
+    public StatementNode createWhile(ConditionNode condition, StatementNode body) {
+        return new WhileNode(condition, body);
+    }
+
+    public StatementNode createBlock(List<StatementNode> statements) {
+        return new BlockNode(statements.toArray(new StatementNode[statements.size()]));
+    }
+
+    public TypedNode createBinary(String operation, TypedNode left, TypedNode right) {
+        switch (operation) {
+            case "+":
+                return AddOpFactory.create(left, right);
+            case "*":
+                return MulOpFactory.create(left, right);
+            case "<":
+                return LessThanOpFactory.create(left, right);
+            case "&&":
+                return LogicalAndOpFactory.create(left, right);
+            default:
+                throw new RuntimeException("unexpected operation: " + operation);
+        }
+    }
+
+    public TypedNode createNumericLiteral(String value) {
+        try {
+            return IntegerLiteralFactory.create(Integer.parseInt(value));
+        } catch (NumberFormatException ex) {
+            return BigIntegerLiteralFactory.create(new BigInteger(value));
+        }
+    }
+
+    public TypedNode createTime() {
+        return TimeOpFactory.create();
+    }
+
+    public StatementNode createReturn(TypedNode value) {
+        FrameSlot slot = frameDescriptor.findOrAddFrameSlot("<retval>");
+        if (returnValue == null) {
+            returnValue = ReadLocalOpFactory.create(slot);
+        }
+        StatementNode write = WriteLocalOpFactory.create(value, slot);
+        return new ReturnNode(write);
+    }
+}