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annotate graal/com.oracle.truffle.ruby.parser/src/com/oracle/truffle/ruby/parser/RubyFrameTypeConversion.java @ 13735:2c1c805153e6

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Ruby: refactor low level instrumentation services
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Wed, 22 Jan 2014 21:02:06 -0800
parents 0fbee3eb71f0
children
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0fbee3eb71f0 Ruby: import project.
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1 /*
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2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
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4 * redistribute it and/or modify it under the terms of the:
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5 *
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6 * Eclipse Public License version 1.0
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7 * GNU General Public License version 2
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8 * GNU Lesser General Public License version 2.1
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9 */
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10 package com.oracle.truffle.ruby.parser;
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11
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12 import com.oracle.truffle.api.impl.*;
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13 import com.oracle.truffle.ruby.runtime.*;
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15 public final class RubyFrameTypeConversion extends DefaultFrameTypeConversion {
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17 private static final RubyFrameTypeConversion INSTANCE = new RubyFrameTypeConversion();
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18
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19 private RubyFrameTypeConversion() {
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20 }
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21
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22 @Override
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23 public Object getDefaultValue() {
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24 return NilPlaceholder.INSTANCE;
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25 }
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26
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27 public static RubyFrameTypeConversion getInstance() {
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28 return INSTANCE;
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29 }
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30 }