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annotate graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/arguments/ReadPostArgumentNode.java @ 13954:87709646a797

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Fix assert in HotSpotDebugInfoBuilder
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 14 Feb 2014 16:59:27 +0100
parents 0fbee3eb71f0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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.nodes.methods.arguments;
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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.api.nodes.*;
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15 import com.oracle.truffle.ruby.nodes.*;
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16 import com.oracle.truffle.ruby.runtime.*;
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17
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18 /**
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19 * Read a post-optional argument.
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20 */
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21 @NodeInfo(shortName = "read-post-optional-argument")
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22 public class ReadPostArgumentNode extends RubyNode {
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23
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24 private final int indexFromEnd;
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25
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26 public ReadPostArgumentNode(RubyContext context, SourceSection sourceSection, int indexFromEnd) {
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27 super(context, sourceSection);
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28 this.indexFromEnd = indexFromEnd;
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29 }
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30
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31 @Override
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32 public Object execute(VirtualFrame frame) {
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33 final Object[] arguments = frame.getArguments(RubyArguments.class).getArguments();
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34 final int effectiveIndex = arguments.length - 1 - indexFromEnd;
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35 assert effectiveIndex < arguments.length;
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36 return arguments[effectiveIndex];
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37 }
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38
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39 }