Mercurial > hg > truffle

annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLDivNode.java @ 21951:9c8c0937da41

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLDivNode.java@b625b459cf45
children 112aba5e3e12
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
1 /*
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
4 *
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
8 *
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
13 * accompanied this code).
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
14 *
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
18 *
14772
c929a4a3b6c5 added checkheaders command for checking Java source headers without relying on Checkstyle
Doug Simon <doug.simon@oracle.com>
parents: 13882
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
21 * questions.
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
22 */
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
23 package com.oracle.truffle.sl.nodes.expression;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
24
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
25 import java.math.*;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
26
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
27 import com.oracle.truffle.api.dsl.*;
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
28 import com.oracle.truffle.api.nodes.*;
16512
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 14772
diff changeset
29 import com.oracle.truffle.api.source.*;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
30 import com.oracle.truffle.sl.nodes.*;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
31
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
32 /**
13882
afd6fa5e8229 SL: Feedback from reviewers
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13836
diff changeset
33 * This class is similar to the extensively documented {@link SLAddNode}. Divisions by 0 throw the
afd6fa5e8229 SL: Feedback from reviewers
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13836
diff changeset
34 * same {@link ArithmeticException exception} as in Java, SL has no special handling for it to keep
afd6fa5e8229 SL: Feedback from reviewers
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13836
diff changeset
35 * the code simple.
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
36 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
37 @NodeInfo(shortName = "/")
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
38 public abstract class SLDivNode extends SLBinaryNode {
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
39
16512
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 14772
diff changeset
40 public SLDivNode(SourceSection src) {
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 14772
diff changeset
41 super(src);
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 14772
diff changeset
42 }
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 14772
diff changeset
43
21121
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
44 @Specialization(rewriteOn = ArithmeticException.class)
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
45 protected long div(long left, long right) throws ArithmeticException {
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
46 long result = left / right;
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
47 /*
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
48 * The division overflows if left is Long.MIN_VALUE and right is -1.
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
49 */
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
50 if ((left & right & result) < 0) {
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
51 throw new ArithmeticException("long overflow");
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
52 }
b625b459cf45 SL: fix division long overflow. Contributed-by: Raffaello Giulietti <raffaello.giulietti@supsi.ch>
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
53 return result;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
54 }
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
55
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
56 @Specialization
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
57 protected BigInteger div(BigInteger left, BigInteger right) {
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
58 return left.divide(right);
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
59 }
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
60 }