Mercurial > hg > graal-compiler
comparison graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/call/ProcOrNullNode.java @ 13529:856c2c294f84
Merge.
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 07 Jan 2014 18:53:04 +0100 |
parents | 0fbee3eb71f0 |
children |
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13528:5a0c694ef735 | 13529:856c2c294f84 |
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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.call; | |
11 | |
12 import com.oracle.truffle.api.*; | |
13 import com.oracle.truffle.api.dsl.*; | |
14 import com.oracle.truffle.api.frame.*; | |
15 import com.oracle.truffle.api.nodes.*; | |
16 import com.oracle.truffle.ruby.nodes.*; | |
17 import com.oracle.truffle.ruby.runtime.*; | |
18 import com.oracle.truffle.ruby.runtime.core.*; | |
19 | |
20 /** | |
21 * Wraps some node that will produce either a {@link RubyProc} or a {@link NilPlaceholder} and | |
22 * returns {@code null} in case of the latter. Used in parts of the dispatch chain. | |
23 */ | |
24 @NodeInfo(shortName = "proc-or-null") | |
25 @NodeChild(value = "child", type = RubyNode.class) | |
26 public abstract class ProcOrNullNode extends RubyNode { | |
27 | |
28 public ProcOrNullNode(RubyContext context, SourceSection sourceSection) { | |
29 super(context, sourceSection); | |
30 } | |
31 | |
32 public ProcOrNullNode(ProcOrNullNode prev) { | |
33 super(prev); | |
34 } | |
35 | |
36 @Specialization | |
37 public Object doNil(@SuppressWarnings("unused") NilPlaceholder nil) { | |
38 return null; | |
39 } | |
40 | |
41 @Specialization | |
42 public Object doProc(RubyProc proc) { | |
43 return proc; | |
44 } | |
45 | |
46 @Override | |
47 public RubyProc executeRubyProc(VirtualFrame frame) { | |
48 final Object proc = execute(frame); | |
49 | |
50 // The standard asRubyProc test doesn't allow for null | |
51 assert proc == null || RubyTypesGen.RUBYTYPES.isRubyProc(proc); | |
52 | |
53 return (RubyProc) proc; | |
54 } | |
55 | |
56 } |