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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.*;
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13 import com.oracle.truffle.api.frame.*;
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14 import com.oracle.truffle.ruby.nodes.*;
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15 import com.oracle.truffle.ruby.runtime.*;
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16
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17 /**
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18 * Dead nodes are removed wherever they are found during translation. They fill in for some missing
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19 * nodes when we're processing the AST.
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20 */
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21 public class DeadNode extends RubyNode {
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22
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23 public DeadNode(RubyContext context, SourceSection sourceSection) {
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24 super(context, sourceSection);
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25 }
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26
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27 @Override
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28 public Object execute(VirtualFrame frame) {
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29 throw new UnsupportedOperationException("Dead nodes should have been pruned before execution starts");
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30 }
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31 }
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