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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultFrameTypeConversion.java @ 9258:07f8d136a05e

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Truffle API changes for the Frame API. Introduction of Assumptions class.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 23 Apr 2013 15:34:06 +0200
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children 494b818b527c
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07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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6 * under the terms of the GNU General Public License version 2 only, as
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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12 * version 2 for more details (a copy is included in the LICENSE file that
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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16 * 2 along with this work; if not, write to the Free Software Foundation,
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.api.impl;
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25 import com.oracle.truffle.api.frame.*;
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26
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27 /**
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28 * Interface for defining type conversions for frame slot values.
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29 */
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30 public class DefaultFrameTypeConversion implements FrameTypeConversion {
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31
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32 private static final DefaultFrameTypeConversion INSTANCE = new DefaultFrameTypeConversion();
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33
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34 @Override
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35 public Object getDefaultValue() {
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36 return null;
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37 }
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38
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39 @Override
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40 public void updateFrameSlot(Frame frame, FrameSlot slot, Object value) {
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41 FrameUtil.setObjectSafe(frame, slot, value);
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42 }
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43
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44 public static DefaultFrameTypeConversion getInstance() {
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45 return INSTANCE;
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46 }
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47 }