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annotate graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/UndefinedPlaceholder.java @ 13918:22bf5a8ba9eb

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Ruby: restore prototype debugger.
author Chris Seaton <chris.seaton@oracle.com>
date Mon, 10 Feb 2014 03:39:21 +0000
parents 0fbee3eb71f0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
0fbee3eb71f0 Ruby: import project.
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
0fbee3eb71f0 Ruby: import project.
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4 * redistribute it and/or modify it under the terms of the:
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5 *
0fbee3eb71f0 Ruby: import project.
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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 */
0fbee3eb71f0 Ruby: import project.
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10 package com.oracle.truffle.ruby.runtime;
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11
0fbee3eb71f0 Ruby: import project.
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12 /**
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13 * The {@link UndefinedPlaceholder} is a value that represents an undefined value in Ruby. This is
0fbee3eb71f0 Ruby: import project.
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14 * used to differentiate between nil and the true absence of a value, such as an argument that has
0fbee3eb71f0 Ruby: import project.
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15 * not been passed.
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16 */
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17 public final class UndefinedPlaceholder {
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18
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19 public static final UndefinedPlaceholder INSTANCE = new UndefinedPlaceholder();
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20
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21 private UndefinedPlaceholder() {
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22 }
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23
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24 }