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comparison 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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13513:64a23ce736a0 13514:0fbee3eb71f0
1 /*
2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.nodes.methods.arguments;
11
12 import java.util.*;
13
14 import com.oracle.truffle.api.*;
15 import com.oracle.truffle.api.frame.*;
16 import com.oracle.truffle.api.nodes.*;
17 import com.oracle.truffle.ruby.nodes.*;
18 import com.oracle.truffle.ruby.runtime.*;
19 import com.oracle.truffle.ruby.runtime.core.*;
20 import com.oracle.truffle.ruby.runtime.core.array.*;
21
22 /**
23 * Read the rest of arguments after a certain point into an array.
24 */
25 @NodeInfo(shortName = "read-rest-of-arguments")
26 public class ReadRestArgumentNode extends RubyNode {
27
28 private final int index;
29
30 public ReadRestArgumentNode(RubyContext context, SourceSection sourceSection, int index) {
31 super(context, sourceSection);
32 this.index = index;
33 }
34
35 @Override
36 public Object execute(VirtualFrame frame) {
37 final RubyArguments rubyArguments = frame.getArguments(RubyArguments.class);
38
39 final Object[] arguments = rubyArguments.getArguments();
40
41 final RubyClass arrayClass = getContext().getCoreLibrary().getArrayClass();
42
43 if (arguments.length <= index) {
44 return new RubyArray(arrayClass);
45 } else if (index == 0) {
46 return new RubyArray(arrayClass, new ObjectArrayStore(arguments));
47 } else {
48 return new RubyArray(arrayClass, new ObjectArrayStore(Arrays.copyOfRange(arguments, index, arguments.length)));
49 }
50 }
51 }