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comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/TernaryNode.java @ 7794:b891ec348f8a

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Made the usage of generic types more flexible for short circuits and generic specializations.
author Christian Humer <christian.humer@gmail.com>
date Fri, 15 Feb 2013 19:32:58 +0100
parents
children 0110e781b6fa
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7793:8b48c8ebdff4 7794:b891ec348f8a
1 /*
2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.sl.nodes;
24
25 import java.math.*;
26
27 import com.oracle.truffle.api.codegen.*;
28
29 @SuppressWarnings("unused")
30 @ExecuteChildren({"conditionNode", "ifPartNode", "elsePartNode"})
31 public abstract class TernaryNode extends TypedNode {
32
33 @Child protected ConditionNode conditionNode;
34
35 @Child protected TypedNode ifPartNode;
36
37 @Child protected TypedNode elsePartNode;
38
39 public TernaryNode(ConditionNode condition, TypedNode ifPart, TypedNode elsePart) {
40 this.conditionNode = adoptChild(condition);
41 this.ifPartNode = adoptChild(ifPart);
42 this.elsePartNode = adoptChild(elsePart);
43 }
44
45 public TernaryNode(TernaryNode condition) {
46 this(condition.conditionNode, condition.ifPartNode, condition.elsePartNode);
47 }
48
49 @ShortCircuit("ifPartNode")
50 public boolean needsIfPart(boolean condition) {
51 return condition;
52 }
53
54 @ShortCircuit("elsePartNode")
55 public boolean needsElsePart(boolean condition, boolean hasIfPart, Object ifPart) {
56 return !hasIfPart;
57 }
58
59 @Specialization
60 public int doInteger(boolean condition, boolean hasIfPart, int ifPart, boolean hasElsePart, int elsePart) {
61 return hasIfPart ? ifPart : elsePart;
62 }
63
64 @Specialization
65 public BigInteger doBigInteger(boolean condition, boolean hasIfPart, BigInteger ifPart, boolean hasElsePart, BigInteger elsePart) {
66 return hasIfPart ? ifPart : elsePart;
67 }
68
69 @Generic
70 public Object doGeneric(boolean condition, boolean hasIfPart, Object ifPart, boolean hasElsePart, Object elsePart) {
71 return hasIfPart ? ifPart : elsePart;
72 }
73 }