Mercurial > hg > truffle

comparison truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/GuardExpression.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.dsl.processor/src/com/oracle/truffle/dsl/processor/model/GuardExpression.java@08aa0372dad4
children dc83cc1f94f2
comparison
equal deleted inserted replaced
21950:2a5011c7e641 21951:9c8c0937da41
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.dsl.processor.model;
24
25 import java.util.*;
26
27 import javax.lang.model.element.*;
28
29 import com.oracle.truffle.dsl.processor.expression.*;
30 import com.oracle.truffle.dsl.processor.expression.DSLExpression.Negate;
31 import com.oracle.truffle.dsl.processor.java.*;
32
33 public final class GuardExpression extends MessageContainer {
34
35 private final TemplateMethod source;
36 private final DSLExpression expression;
37
38 public GuardExpression(TemplateMethod source, DSLExpression expression) {
39 this.source = source;
40 this.expression = expression;
41 }
42
43 @Override
44 public Element getMessageElement() {
45 return source.getMessageElement();
46 }
47
48 @Override
49 public AnnotationMirror getMessageAnnotation() {
50 return source.getMessageAnnotation();
51 }
52
53 @Override
54 public AnnotationValue getMessageAnnotationValue() {
55 return ElementUtils.getAnnotationValue(getMessageAnnotation(), "guards");
56 }
57
58 public DSLExpression getExpression() {
59 return expression;
60 }
61
62 public boolean equalsNegated(GuardExpression other) {
63 boolean negated = false;
64 DSLExpression thisExpression = expression;
65 if (thisExpression instanceof Negate) {
66 negated = true;
67 thisExpression = ((Negate) thisExpression).getReceiver();
68 }
69
70 boolean otherNegated = false;
71 DSLExpression otherExpression = other.expression;
72 if (otherExpression instanceof Negate) {
73 otherNegated = true;
74 otherExpression = ((Negate) otherExpression).getReceiver();
75 }
76 return Objects.equals(thisExpression, otherExpression) && negated != otherNegated;
77 }
78
79 public boolean implies(GuardExpression other) {
80 if (Objects.equals(expression, other.expression)) {
81 return true;
82 }
83 return false;
84 }
85
86 }