Mercurial > hg > truffle

annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLEqualNode.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/SLEqualNode.java@c0455554d45b
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 *
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
25 import java.math.*;
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
26
13761
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.*;
20953
c0455554d45b SL: some minor simplifications.
Christian Humer <christian.humer@gmail.com>
parents: 16761
diff changeset
28 import com.oracle.truffle.api.frame.*;
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
29 import com.oracle.truffle.api.nodes.*;
16512
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 13882
diff changeset
30 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
31 import com.oracle.truffle.sl.nodes.*;
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
32 import com.oracle.truffle.sl.runtime.*;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
33
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
34 /**
13882
afd6fa5e8229 SL: Feedback from reviewers
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13836
diff changeset
35 * The {@code ==} operator of SL is defined on all types. Therefore, we need a
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
36 * {@link #equal(Object, Object) generic implementation} that can handle all possible types. But
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
37 * since {@code ==} can only return {@code true} when the type of the left and right operand are the
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
38 * same, the specializations already cover all possible cases that can return {@code true} and the
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
39 * generic case is trivial.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
40 * <p>
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
41 * Note that we do not need the analogous {@code =!} operator, because we can just
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
42 * {@link SLLogicalNotNode negate} the {@code ==} operator.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
43 */
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
44 @NodeInfo(shortName = "==")
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
45 public abstract class SLEqualNode extends SLBinaryNode {
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
46
16512
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 13882
diff changeset
47 public SLEqualNode(SourceSection src) {
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 13882
diff changeset
48 super(src);
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 13882
diff changeset
49 }
abe7128ca473 SL: upgrade source attribution
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 13882
diff changeset
50
20953
c0455554d45b SL: some minor simplifications.
Christian Humer <christian.humer@gmail.com>
parents: 16761
diff changeset
51 @Override
c0455554d45b SL: some minor simplifications.
Christian Humer <christian.humer@gmail.com>
parents: 16761
diff changeset
52 public abstract boolean executeBoolean(VirtualFrame frame);
c0455554d45b SL: some minor simplifications.
Christian Humer <christian.humer@gmail.com>
parents: 16761
diff changeset
53
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
54 @Specialization
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
55 protected boolean equal(long left, long right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
56 return left == right;
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
57 }
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
58
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
59 @Specialization
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
60 protected boolean equal(BigInteger left, BigInteger right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
61 return left.equals(right);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
62 }
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
63
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
64 @Specialization
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
65 protected boolean equal(boolean left, boolean right) {
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
66 return left == right;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
67 }
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
68
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
69 @Specialization
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
70 protected boolean equal(String left, String right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
71 return left.equals(right);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
72 }
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
73
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
74 @Specialization
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
75 protected boolean equal(SLFunction left, SLFunction right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
76 /*
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
77 * Our function registry maintains one canonical SLFunction object per function name, so we
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
78 * do not need equals().
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
79 */
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
80 return left == right;
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
81 }
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
82
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
83 @Specialization
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
84 protected boolean equal(SLNull left, SLNull right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
85 /* There is only the singleton instance of SLNull, so we do not need equals(). */
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
86 return left == right;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
87 }
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
88
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
89 /**
16761
e5e1013c04fd SL: adapt SL for @Generic to @Fallback rename.
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
90 * The {@link Fallback} annotation informs the Truffle DSL that this method should be executed
13836
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
91 * when no {@link Specialization specialized method} matches. The operand types must be
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
92 * {@link Object}.
64c77f0577bb More documentation and improvements of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13821
diff changeset
93 */
16761
e5e1013c04fd SL: adapt SL for @Generic to @Fallback rename.
Christian Humer <christian.humer@gmail.com>
parents: 16512
diff changeset
94 @Fallback
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
95 protected boolean equal(Object left, Object right) {
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
96 /*
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
97 * We covered all the cases that can return true in specializations. If we compare two
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
98 * values with different types, no specialization matches and we end up here.
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
99 */
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
100 assert !left.equals(right);
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13761
diff changeset
101 return false;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
102 }
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
103 }