ReactOS 0.4.15-dev-7704-gc07eb9f
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;
#define DECLSPEC_HIDDEN
Definition: precomp.h:8
unsigned short VARTYPE
Definition: compat.h:2254
unsigned int BOOL
Definition: ntddk_ex.h:94
unsigned long DWORD
Definition: ntddk_ex.h:95
DWORD LCID
Definition: nls.h:13
WCHAR cCurrencyDigitSeparator
Definition: variant.h:116
uint32_t ULONG
Definition: typedefs.h:59
HRESULT VARIANT_ClearInd(VARIANTARG *) DECLSPEC_HIDDEN
Definition: variant.c:576
BOOL get_date_format(LCID, DWORD, const SYSTEMTIME *, const WCHAR *, WCHAR *, int) DECLSPEC_HIDDEN
Definition: vartype.c:6668
struct tagVARIANT_NUMBER_CHARS VARIANT_NUMBER_CHARS
unsigned int get_type_size(ULONG *, VARTYPE) DECLSPEC_HIDDEN
Definition: usrmarshal.c:209
__wchar_t WCHAR
Definition: xmlstorage.h:180