ReactOS  0.4.14-dev-337-gf981a68
variant.h
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1 /*
2  * Variant Inlines
3  *
4  * Copyright 2003 Jon Griffiths
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 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  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19  */
20 
21 #pragma once
22 
23 #include "windef.h"
24 #include "winerror.h"
25 #include "objbase.h"
26 #include "oleauto.h"
27 #include <math.h>
28 
29 /* Get just the type from a variant pointer */
30 #define V_TYPE(v) (V_VT((v)) & VT_TYPEMASK)
31 
32 /* Flags set in V_VT, other than the actual type value */
33 #define VT_EXTRA_TYPE (VT_VECTOR|VT_ARRAY|VT_BYREF|VT_RESERVED)
34 
35 /* Get the extra flags from a variant pointer */
36 #define V_EXTRA_TYPE(v) (V_VT((v)) & VT_EXTRA_TYPE)
37 
38 /* Missing in Windows but useful VTBIT_* defines */
39 #define VTBIT_BOOL (1 << VT_BSTR)
40 #define VTBIT_BSTR (1 << VT_BSTR)
41 #define VTBIT_DATE (1 << VT_DATE)
42 #define VTBIT_DISPATCH (1 << VT_DISPATCH)
43 #define VTBIT_EMPTY (1 << VT_EMPTY)
44 #define VTBIT_ERROR (1 << VT_ERROR)
45 #define VTBIT_INT (1 << VT_INT)
46 #define VTBIT_NULL (1 << VT_NULL)
47 #define VTBIT_UINT (1 << VT_UINT)
48 #define VTBIT_UNKNOWN (1 << VT_UNKNOWN)
49 #define VTBIT_VARIANT (1 << VT_VARIANT)
50 #define VTBIT_15 (1 << 15) /* no variant type with this number */
51 
52 /* Size constraints */
53 #define I1_MAX 0x7f
54 #define I1_MIN ((-I1_MAX)-1)
55 #define UI1_MAX 0xff
56 #define UI1_MIN 0
57 #define I2_MAX 0x7fff
58 #define I2_MIN ((-I2_MAX)-1)
59 #define UI2_MAX 0xffff
60 #define UI2_MIN 0
61 #define I4_MAX 0x7fffffff
62 #define I4_MIN ((-I4_MAX)-1)
63 #define UI4_MAX 0xffffffff
64 #define UI4_MIN 0
65 #define I8_MAX (((LONGLONG)I4_MAX << 32) | UI4_MAX)
66 #define I8_MIN ((-I8_MAX)-1)
67 #define UI8_MAX (((ULONGLONG)UI4_MAX << 32) | UI4_MAX)
68 #define UI8_MIN 0
69 #define DATE_MAX 2958465
70 #define DATE_MIN -657434
71 #define R4_MAX 3.402823567797336e38
72 #define R4_MIN 1.40129846432481707e-45
73 #define R8_MAX 1.79769313486231470e+308
74 #define R8_MIN 4.94065645841246544e-324
75 
76 /* Value of sign for a positive decimal number */
77 #define DECIMAL_POS 0
78 
79 /* Native headers don't change the union ordering for DECIMAL sign/scale (duh).
80  * This means that the signscale member is only useful for setting both members to 0.
81  * SIGNSCALE creates endian-correct values so that we can properly set both at once
82  * to values other than 0.
83  */
84 #ifdef WORDS_BIGENDIAN
85 #define SIGNSCALE(sign,scale) (((scale) << 8) | sign)
86 #else
87 #define SIGNSCALE(sign,scale) (((sign) << 8) | scale)
88 #endif
89 
90 /* Macros for getting at a DECIMAL's parts */
91 #define DEC_SIGN(d) ((d)->u.s.sign)
92 #define DEC_SCALE(d) ((d)->u.s.scale)
93 #define DEC_SIGNSCALE(d) ((d)->u.signscale)
94 #define DEC_HI32(d) ((d)->Hi32)
95 #define DEC_MID32(d) ((d)->u1.s1.Mid32)
96 #define DEC_LO32(d) ((d)->u1.s1.Lo32)
97 #define DEC_LO64(d) ((d)->u1.Lo64)
98 
99 #define DEC_MAX_SCALE 28 /* Maximum scale for a decimal */
100 
101 /* Internal flags for low level conversion functions */
102 #define VAR_BOOLONOFF 0x0400 /* Convert bool to "On"/"Off" */
103 #define VAR_BOOLYESNO 0x0800 /* Convert bool to "Yes"/"No" */
104 #define VAR_NEGATIVE 0x1000 /* Number is negative */
105 
106 /* The localised characters that make up a valid number */
108 {
118 
122  const WCHAR *, WCHAR *, int) DECLSPEC_HIDDEN;
WCHAR cCurrencyDigitSeparator
Definition: variant.h:116
HRESULT VARIANT_ClearInd(VARIANTARG *) DECLSPEC_HIDDEN
Definition: variant.c:579
unsigned int get_type_size(ULONG *, VARTYPE) DECLSPEC_HIDDEN
Definition: usrmarshal.c:209
DWORD LCID
Definition: nls.h:13
unsigned int BOOL
Definition: ntddk_ex.h:94
struct tagVARIANT_NUMBER_CHARS VARIANT_NUMBER_CHARS
__wchar_t WCHAR
Definition: xmlstorage.h:180
LONG HRESULT
Definition: typedefs.h:77
unsigned long DWORD
Definition: ntddk_ex.h:95
#define DECLSPEC_HIDDEN
Definition: precomp.h:8
unsigned short VARTYPE
Definition: compat.h:1903
unsigned int ULONG
Definition: retypes.h:1
BOOL get_date_format(LCID, DWORD, const SYSTEMTIME *, const WCHAR *, WCHAR *, int) DECLSPEC_HIDDEN
Definition: vartype.c:6667