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annotate graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/arguments/ReadRestArgumentNode.java @ 13514:0fbee3eb71f0

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Ruby: import project.
author Chris Seaton <chris.seaton@oracle.com>
date Mon, 06 Jan 2014 17:12:09 +0000
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13514
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.nodes.methods.arguments;
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11
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12 import java.util.*;
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13
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14 import com.oracle.truffle.api.*;
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15 import com.oracle.truffle.api.frame.*;
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16 import com.oracle.truffle.api.nodes.*;
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17 import com.oracle.truffle.ruby.nodes.*;
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18 import com.oracle.truffle.ruby.runtime.*;
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19 import com.oracle.truffle.ruby.runtime.core.*;
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20 import com.oracle.truffle.ruby.runtime.core.array.*;
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21
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22 /**
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23 * Read the rest of arguments after a certain point into an array.
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24 */
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25 @NodeInfo(shortName = "read-rest-of-arguments")
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26 public class ReadRestArgumentNode extends RubyNode {
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27
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28 private final int index;
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29
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30 public ReadRestArgumentNode(RubyContext context, SourceSection sourceSection, int index) {
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31 super(context, sourceSection);
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32 this.index = index;
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33 }
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34
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35 @Override
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36 public Object execute(VirtualFrame frame) {
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37 final RubyArguments rubyArguments = frame.getArguments(RubyArguments.class);
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38
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39 final Object[] arguments = rubyArguments.getArguments();
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40
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41 final RubyClass arrayClass = getContext().getCoreLibrary().getArrayClass();
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42
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43 if (arguments.length <= index) {
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44 return new RubyArray(arrayClass);
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45 } else if (index == 0) {
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46 return new RubyArray(arrayClass, new ObjectArrayStore(arguments));
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47 } else {
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48 return new RubyArray(arrayClass, new ObjectArrayStore(Arrays.copyOfRange(arguments, index, arguments.length)));
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49 }
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50 }
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51 }