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comparison graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/literal/NilNode.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.literal;
11
12 import com.oracle.truffle.api.*;
13 import com.oracle.truffle.api.frame.*;
14 import com.oracle.truffle.api.nodes.*;
15 import com.oracle.truffle.ruby.nodes.*;
16 import com.oracle.truffle.ruby.runtime.*;
17
18 /**
19 * A node that does nothing and evaluates to Nil. A no-op.
20 */
21 @NodeInfo(shortName = "nil")
22 public final class NilNode extends RubyNode {
23
24 public NilNode(RubyContext context, SourceSection sourceSection) {
25 super(context, sourceSection);
26 }
27
28 @Override
29 public NilPlaceholder executeNilPlaceholder(VirtualFrame frame) {
30 return NilPlaceholder.INSTANCE;
31 }
32
33 @Override
34 public Object execute(VirtualFrame frame) {
35 return executeNilPlaceholder(frame);
36 }
37
38 @Override
39 public void executeVoid(VirtualFrame frame) {
40 }
41
42 }