1 | // -*- c-basic-offset: 2 -*- |
2 | /* |
3 | * This file is part of the KDE libraries |
4 | * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Library General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Library General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Library General Public License |
17 | * along with this library; see the file COPYING.LIB. If not, write to |
18 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | * Boston, MA 02110-1301, USA. |
20 | * |
21 | */ |
22 | |
23 | #ifndef _KJS_OPERATIONS_H_ |
24 | #define _KJS_OPERATIONS_H_ |
25 | |
26 | #include "global.h" |
27 | #include <math.h> |
28 | |
29 | namespace KJS { |
30 | |
31 | class ExecState; |
32 | class JSValue; |
33 | |
34 | enum Operator { OpEqual, |
35 | OpEqEq, |
36 | OpPlus, |
37 | OpMinus, |
38 | OpMult, |
39 | OpDiv, |
40 | OpMod, |
41 | OpNotEq, |
42 | OpStrEq, |
43 | OpStrNEq, |
44 | OpPlusEq, |
45 | OpMinusEq, |
46 | OpMultEq, |
47 | OpDivEq, |
48 | OpPlusPlus, |
49 | OpMinusMinus, |
50 | OpLess, |
51 | OpLessEq, |
52 | OpGreater, |
53 | OpGreaterEq, |
54 | OpAndEq, |
55 | OpXOrEq, |
56 | OpOrEq, |
57 | OpModEq, |
58 | OpAnd, |
59 | OpOr, |
60 | OpBitAnd, |
61 | OpBitXOr, |
62 | OpBitOr, |
63 | OpLShift, |
64 | OpRShift, |
65 | OpURShift, |
66 | OpIn, |
67 | OpInstanceOf |
68 | }; |
69 | |
70 | #if PLATFORM(DARWIN) |
71 | inline bool isNaN(double d) { return isnan(d); } |
72 | inline bool isInf(double d) { return isinf(d); } |
73 | inline bool isPosInf(double d) { return isinf(d) && d > 0; } |
74 | inline bool isNegInf(double d) { return isinf(d) && d < 0; } |
75 | #else |
76 | KJS_EXPORT bool isNaN(double d); |
77 | KJS_EXPORT bool isInf(double d); |
78 | KJS_EXPORT bool isPosInf(double d); |
79 | KJS_EXPORT bool isNegInf(double d); |
80 | #endif |
81 | |
82 | bool equal(ExecState *exec, JSValue *v1, JSValue *v2); |
83 | bool strictEqual(ExecState *exec, JSValue *v1, JSValue *v2); |
84 | // Same as strictEqual, except for "-0" and "0" difference. |
85 | // Used in PropertyDescriptor::equalTo and Object::defineOwnProperty to check |
86 | // if the value changed and we need to update. |
87 | bool sameValue(ExecState *exec, JSValue *v1, JSValue *v2); |
88 | /** |
89 | * This operator performs an abstract relational comparison of the two |
90 | * arguments that can be of arbitrary type. If possible, conversions to the |
91 | * string or number type will take place before the comparison. |
92 | * |
93 | * @return 1 if v1 is "less-than" v2, 0 if the relation is "greater-than-or- |
94 | * equal". -1 if the result is undefined. |
95 | */ |
96 | int relation(ExecState *exec, JSValue *v1, JSValue *v2, bool leftFirst = true); |
97 | int relation(ExecState *exec, JSValue *v1, double n2); |
98 | int maxInt(int d1, int d2); |
99 | int minInt(int d1, int d2); |
100 | |
101 | } |
102 | |
103 | #endif |
104 | |