--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/SLNodeFactory.java	Mon Nov 11 21:34:44 2013 +0100
@@ -0,0 +1,158 @@
+/*
+ * 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.math.*;
+import java.util.*;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.nodes.*;
+import com.oracle.truffle.sl.nodes.ArithmeticNodeFactory.AddNodeFactory;
+import com.oracle.truffle.sl.nodes.ArithmeticNodeFactory.DivNodeFactory;
+import com.oracle.truffle.sl.nodes.ArithmeticNodeFactory.MulNodeFactory;
+import com.oracle.truffle.sl.nodes.ArithmeticNodeFactory.SubNodeFactory;
+import com.oracle.truffle.sl.nodes.*;
+import com.oracle.truffle.sl.parser.*;
+import com.oracle.truffle.sl.runtime.*;
+
+public class SLNodeFactory {
+
+    private final SLContext context;
+
+    private Parser parser;
+    private FrameDescriptor frameDescriptor;
+    private TypedNode returnValue;
+
+    private Source source;
+    private String currentFunctionName;
+
+    public SLNodeFactory(SLContext context) {
+        this.context = context;
+    }
+
+    public void setSource(Source source) {
+        this.source = source;
+    }
+
+    public void setParser(Parser parser) {
+        this.parser = parser;
+    }
+
+    public CallTarget findFunction(String name) {
+        return context.getFunctionRegistry().lookup(name);
+    }
+
+    public void startFunction() {
+        frameDescriptor = new FrameDescriptor();
+    }
+
+    public void createFunction(StatementNode body, String name, String[] parameterNames) {
+        context.getFunctionRegistry().register(name, FunctionRootNode.createFunction(body, frameDescriptor, name, returnValue, parameterNames));
+        this.currentFunctionName = name;
+        this.returnValue = null;
+    }
+
+    private <T extends Node> T assignSource(T node) {
+        node.assignSourceSection(ParserUtils.createSourceSection(source, currentFunctionName, parser));
+        return node;
+    }
+
+    public TypedNode createLocal(String name) {
+        return assignSource(new ReadUninitializedNode(context, frameDescriptor.findOrAddFrameSlot(name, FrameSlotKind.Int)));
+    }
+
+    public TypedNode createStringLiteral(String value) {
+        return assignSource(new StringLiteralNode(value));
+    }
+
+    public TypedNode createAssignment(TypedNode read, TypedNode assignment) {
+        FrameSlot slot = ((ReadUninitializedNode) read).getSlot();
+        return assignSource(WriteLocalNodeFactory.create(slot, assignment));
+    }
+
+    public StatementNode createWhile(ConditionNode condition, StatementNode body) {
+        return assignSource(new WhileNode(condition, body));
+    }
+
+    public StatementNode createBlock(List<StatementNode> statements) {
+        return assignSource(new BlockNode(statements.toArray(new StatementNode[statements.size()])));
+    }
+
+    public TypedNode createCall(TypedNode function, TypedNode[] parameters) {
+        return assignSource(CallNode.create(function, parameters));
+    }
+
+    public TypedNode createBinary(String operation, TypedNode left, TypedNode right) {
+        TypedNode binary;
+        switch (operation) {
+            case "+":
+                binary = AddNodeFactory.create(left, right);
+                break;
+            case "*":
+                binary = MulNodeFactory.create(left, right);
+                break;
+            case "/":
+                binary = DivNodeFactory.create(left, right);
+                break;
+            case "-":
+                binary = SubNodeFactory.create(left, right);
+                break;
+            case "<":
+                binary = LessThanNodeFactory.create(left, right);
+                break;
+            case "&&":
+                binary = LogicalAndNodeFactory.create(left, right);
+                break;
+            default:
+                throw new RuntimeException("unexpected operation: " + operation);
+        }
+        return assignSource(binary);
+    }
+
+    public TypedNode createNumericLiteral(String value) {
+        try {
+            return assignSource(new IntegerLiteralNode(Integer.parseInt(value)));
+        } catch (NumberFormatException ex) {
+            return assignSource(new BigIntegerLiteralNode(new BigInteger(value)));
+        }
+    }
+
+    public StatementNode createReturn(TypedNode value) {
+        FrameSlot slot = frameDescriptor.findOrAddFrameSlot("<retval>", FrameSlotKind.Int);
+        if (returnValue == null) {
+            returnValue = ReadLocalNodeFactory.create(slot);
+        }
+        StatementNode write = WriteLocalNodeFactory.create(slot, value);
+        return assignSource(new ReturnNode(write));
+    }
+
+    public TypedNode createTernary(TypedNode condition, TypedNode thenPart, TypedNode elsePart) {
+        return assignSource(TernaryNodeFactory.create(condition, thenPart, elsePart));
+    }
+
+    public StatementNode createIf(ConditionNode condition, StatementNode then, StatementNode elseNode) {
+        return assignSource(IfNodeFactory.create(then, elseNode, condition));
+    }
+
+}