Mercurial > hg > graal-jvmci-8
comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/ReadUninitializedNode.java @ 12752:71991b7a0f14
SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
| author | Christian Humer <christian.humer@gmail.com> |
|---|---|
| date | Mon, 11 Nov 2013 21:34:44 +0100 |
| parents | |
| children |
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| 12712:882a0aadfed6 | 12752:71991b7a0f14 |
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| 1 /* | |
| 2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 package com.oracle.truffle.sl.nodes; | |
| 24 | |
| 25 import com.oracle.truffle.api.*; | |
| 26 import com.oracle.truffle.api.frame.*; | |
| 27 import com.oracle.truffle.sl.runtime.*; | |
| 28 | |
| 29 public class ReadUninitializedNode extends TypedNode { | |
| 30 | |
| 31 private final SLContext context; | |
| 32 private final FrameSlot slot; | |
| 33 | |
| 34 public ReadUninitializedNode(SLContext context, FrameSlot slot) { | |
| 35 this.context = context; | |
| 36 this.slot = slot; | |
| 37 } | |
| 38 | |
| 39 public FrameSlot getSlot() { | |
| 40 return slot; | |
| 41 } | |
| 42 | |
| 43 @Override | |
| 44 public Object executeGeneric(VirtualFrame frame) { | |
| 45 CompilerDirectives.transferToInterpreter(); | |
| 46 Object result = frame.getValue(slot); | |
| 47 String identifier = (String) slot.getIdentifier(); | |
| 48 if (result == null) { | |
| 49 // function access | |
| 50 return replace(new ReadFunctionNode(context.getFunctionRegistry(), identifier)).executeGeneric(frame); | |
| 51 } else { | |
| 52 // local variable access | |
| 53 return replace(ReadLocalNodeFactory.create(slot)).executeGeneric(frame); | |
| 54 } | |
| 55 } | |
| 56 } |