417 lines
16 KiB
C
417 lines
16 KiB
C
/*
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* Variant Inlines
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*
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* Copyright 2003 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "windef.h"
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#include "winerror.h"
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#include "oleauto.h"
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#include <math.h>
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/* Size constraints */
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#define I1_MAX 0x7f
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#define I1_MIN ((-I1_MAX)-1)
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#define UI1_MAX 0xff
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#define UI1_MIN 0
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#define I2_MAX 0x7fff
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#define I2_MIN ((-I2_MAX)-1)
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#define UI2_MAX 0xffff
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#define UI2_MIN 0
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#define I4_MAX 0x7fffffff
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#define I4_MIN ((-I4_MAX)-1)
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#define UI4_MAX 0xffffffff
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#define UI4_MIN 0
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#define I8_MAX (((LONGLONG)I4_MAX << 32) | UI4_MAX)
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#define I8_MIN ((-I8_MAX)-1)
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#define UI8_MAX (((ULONGLONG)UI4_MAX << 32) | UI4_MAX)
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#define UI8_MIN 0
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#define DATE_MAX 2958465
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#define DATE_MIN -657434
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#define R4_MAX 3.402823567797336e38
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#define R4_MIN 1.40129846432481707e-45
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#define R8_MAX 1.79769313486231470e+308
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#define R8_MIN 4.94065645841246544e-324
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/* Value of sign for a positive number */
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#define DECIMAL_POS 0
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/* Native headers don't change the union ordering for DECIMAL sign/scale (duh).
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* This means that the signscale member is only useful for setting both members to 0.
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* SIGNSCALE creates endian-correct values so that we can properly set both at once
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* to values other than 0.
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*/
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#ifdef WORDS_BIGENDIAN
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#define SIGNSCALE(sign,scale) (((scale) << 8) | sign)
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#else
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#define SIGNSCALE(sign,scale) (((sign) << 8) | scale)
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#endif
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/* Macros for getting at a DECIMAL's parts */
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#define DEC_SIGN(d) ((d)->u.s.sign)
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#define DEC_SCALE(d) ((d)->u.s.scale)
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#define DEC_SIGNSCALE(d) ((d)->u.signscale)
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#define DEC_HI32(d) ((d)->Hi32)
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#define DEC_MID32(d) ((d)->u1.s1.Mid32)
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#define DEC_LO32(d) ((d)->u1.s1.Lo32)
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#define DEC_LO64(d) ((d)->u1.Lo64)
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#define DEC_MAX_SCALE 28 /* Maximum scale for a decimal */
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/* Inline return type */
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#define RETTYP inline static HRESULT
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/* Simple compiler cast from one type to another */
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#define SIMPLE(dest, src, func) RETTYP _##func(src in, dest* out) { \
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*out = in; return S_OK; }
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/* Compiler cast where input cannot be negative */
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#define NEGTST(dest, src, func) RETTYP _##func(src in, dest* out) { \
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if (in < (src)0) return DISP_E_OVERFLOW; *out = in; return S_OK; }
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/* Compiler cast where input cannot be > some number */
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#define POSTST(dest, src, func, tst) RETTYP _##func(src in, dest* out) { \
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if (in > (dest)tst) return DISP_E_OVERFLOW; *out = in; return S_OK; }
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/* Compiler cast where input cannot be < some number or >= some other number */
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#define BOTHTST(dest, src, func, lo, hi) RETTYP _##func(src in, dest* out) { \
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if (in < (dest)lo || in > hi) return DISP_E_OVERFLOW; *out = in; return S_OK; }
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/* Conversions from IDispatch use the same code */
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HRESULT VARIANT_FromDisp(IDispatch*,LCID,void*,VARTYPE);
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/* As do conversions from BSTR to numeric types */
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HRESULT VARIANT_NumberFromBstr(OLECHAR*,LCID,ULONG,void*,VARTYPE);
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#define CY_MULTIPLIER 10000 /* 4 dp of precision */
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#define CY_MULTIPLIER_F 10000.0
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#define CY_HALF (CY_MULTIPLIER/2) /* 0.5 */
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#define CY_HALF_F (CY_MULTIPLIER_F/2.0)
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/* I1 */
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POSTST(signed char, BYTE, VarI1FromUI1, I1_MAX);
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BOTHTST(signed char, SHORT, VarI1FromI2, I1_MIN, I1_MAX);
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BOTHTST(signed char, LONG, VarI1FromI4, I1_MIN, I1_MAX);
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#define _VarI1FromR4(flt,out) VarI1FromR8((double)flt,out)
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#define _VarI1FromR8 VarI1FromR8
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#define _VarI1FromCy VarI1FromCy
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#define _VarI1FromDate(dt,out) VarI1FromR8((double)dt,out)
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#define _VarI1FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_I1)
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#define _VarI1FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, (BYTE*)out, VT_I1)
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SIMPLE(signed char, VARIANT_BOOL, VarI1FromBool);
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POSTST(signed char, USHORT, VarI1FromUI2, I1_MAX);
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POSTST(signed char, ULONG, VarI1FromUI4, I1_MAX);
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#define _VarI1FromDec VarI1FromDec
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BOTHTST(signed char, LONG64, VarI1FromI8, I1_MIN, I1_MAX);
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POSTST(signed char, ULONG64, VarI1FromUI8, I1_MAX);
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/* UI1 */
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BOTHTST(BYTE, SHORT, VarUI1FromI2, UI1_MIN, UI1_MAX);
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#define _VarUI1FromR4(flt,out) VarUI1FromR8((double)flt,out)
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#define _VarUI1FromR8 VarUI1FromR8
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#define _VarUI1FromCy VarUI1FromCy
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#define _VarUI1FromDate(dt,out) VarUI1FromR8((double)dt,out)
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#define _VarUI1FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_UI1)
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#define _VarUI1FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_UI1)
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SIMPLE(BYTE, VARIANT_BOOL, VarUI1FromBool);
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NEGTST(BYTE, signed char, VarUI1FromI1);
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POSTST(BYTE, USHORT, VarUI1FromUI2, UI1_MAX);
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BOTHTST(BYTE, LONG, VarUI1FromI4, UI1_MIN, UI1_MAX);
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POSTST(BYTE, ULONG, VarUI1FromUI4, UI1_MAX);
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#define _VarUI1FromDec VarUI1FromDec
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BOTHTST(BYTE, LONG64, VarUI1FromI8, UI1_MIN, UI1_MAX);
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POSTST(BYTE, ULONG64, VarUI1FromUI8, UI1_MAX);
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/* I2 */
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POSTST(SHORT, BYTE, VarI2FromUI1, I2_MAX);
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BOTHTST(SHORT, LONG, VarI2FromI4, I2_MIN, I2_MAX);
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#define _VarI2FromR4(flt,out) VarI2FromR8((double)flt,out)
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#define _VarI2FromR8 VarI2FromR8
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#define _VarI2FromCy VarI2FromCy
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#define _VarI2FromDate(dt,out) VarI2FromR8((double)dt,out)
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#define _VarI2FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_I2)
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#define _VarI2FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, (BYTE*)out, VT_I2)
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SIMPLE(SHORT, VARIANT_BOOL, VarI2FromBool);
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SIMPLE(SHORT, signed char, VarI2FromI1);
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POSTST(SHORT, USHORT, VarI2FromUI2, I2_MAX);
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POSTST(SHORT, ULONG, VarI2FromUI4, I2_MAX);
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#define _VarI2FromDec VarI2FromDec
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BOTHTST(SHORT, LONG64, VarI2FromI8, I2_MIN, I2_MAX);
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POSTST(SHORT, ULONG64, VarI2FromUI8, I2_MAX);
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/* UI2 */
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SIMPLE(USHORT, BYTE, VarUI2FromUI1);
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NEGTST(USHORT, SHORT, VarUI2FromI2);
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BOTHTST(USHORT, LONG, VarUI2FromI4, UI2_MIN, UI2_MAX);
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#define _VarUI2FromR4(flt,out) VarUI2FromR8((double)flt,out)
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#define _VarUI2FromR8 VarUI2FromR8
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#define _VarUI2FromCy VarUI2FromCy
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#define _VarUI2FromDate(dt,out) VarUI2FromR8((double)dt,out)
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#define _VarUI2FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_UI2)
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#define _VarUI2FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_UI2)
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SIMPLE(USHORT, VARIANT_BOOL, VarUI2FromBool);
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NEGTST(USHORT, signed char, VarUI2FromI1);
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POSTST(USHORT, ULONG, VarUI2FromUI4, UI2_MAX);
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#define _VarUI2FromDec VarUI2FromDec
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BOTHTST(USHORT, LONG64, VarUI2FromI8, UI2_MIN, UI2_MAX);
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POSTST(USHORT, ULONG64, VarUI2FromUI8, UI2_MAX);
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/* I4 */
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SIMPLE(LONG, BYTE, VarI4FromUI1);
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SIMPLE(LONG, SHORT, VarI4FromI2);
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#define _VarI4FromR4(flt,out) VarI4FromR8((double)flt,out)
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#define _VarI4FromR8 VarI4FromR8
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#define _VarI4FromCy VarI4FromCy
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#define _VarI4FromDate(dt,out) VarI4FromR8((double)dt,out)
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#define _VarI4FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_I4)
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#define _VarI4FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, (BYTE*)out, VT_I4)
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SIMPLE(LONG, VARIANT_BOOL, VarI4FromBool);
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SIMPLE(LONG, signed char, VarI4FromI1);
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SIMPLE(LONG, USHORT, VarI4FromUI2);
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POSTST(LONG, ULONG, VarI4FromUI4, I4_MAX);
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#define _VarI4FromDec VarI4FromDec
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BOTHTST(LONG, LONG64, VarI4FromI8, I4_MIN, I4_MAX);
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POSTST(LONG, ULONG64, VarI4FromUI8, I4_MAX);
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/* UI4 */
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SIMPLE(ULONG, BYTE, VarUI4FromUI1);
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NEGTST(ULONG, SHORT, VarUI4FromI2);
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NEGTST(ULONG, LONG, VarUI4FromI4);
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#define _VarUI4FromR4(flt,out) VarUI4FromR8((double)flt,out)
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#define _VarUI4FromR8 VarUI4FromR8
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#define _VarUI4FromCy VarUI4FromCy
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#define _VarUI4FromDate(dt,out) VarUI4FromR8((double)dt,out)
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#define _VarUI4FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_UI4)
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#define _VarUI4FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_UI4)
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SIMPLE(ULONG, VARIANT_BOOL, VarUI4FromBool);
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NEGTST(ULONG, signed char, VarUI4FromI1);
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SIMPLE(ULONG, USHORT, VarUI4FromUI2);
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#define _VarUI4FromDec VarUI4FromDec
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BOTHTST(ULONG, LONG64, VarUI4FromI8, UI4_MIN, UI4_MAX);
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POSTST(ULONG, ULONG64, VarUI4FromUI8, UI4_MAX);
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/* I8 */
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SIMPLE(LONG64, BYTE, VarI8FromUI1);
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SIMPLE(LONG64, SHORT, VarI8FromI2);
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#define _VarI8FromR4 VarI8FromR8
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#define _VarI8FromR8 VarI8FromR8
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#define _VarI8FromCy VarI8FromCy
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#define _VarI8FromDate(dt,out) VarI8FromR8((double)dt,out)
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#define _VarI8FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_I8)
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#define _VarI8FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_I8)
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#define _VarI8FromBool _VarI8FromI2
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SIMPLE(LONG64, signed char, VarI8FromI1);
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SIMPLE(LONG64, USHORT, VarI8FromUI2);
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SIMPLE(LONG64, LONG, VarI8FromI4);
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SIMPLE(LONG64, ULONG, VarI8FromUI4);
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#define _VarI8FromDec VarI8FromDec
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POSTST(LONG64, ULONG64, VarI8FromUI8, I8_MAX);
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/* UI8 */
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SIMPLE(ULONG64, BYTE, VarUI8FromUI1);
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NEGTST(ULONG64, SHORT, VarUI8FromI2);
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#define _VarUI8FromR4 VarUI8FromR8
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#define _VarUI8FromR8 VarUI8FromR8
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#define _VarUI8FromCy VarUI8FromCy
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#define _VarUI8FromDate(dt,out) VarUI8FromR8((double)dt,out)
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#define _VarUI8FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_UI8)
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#define _VarUI8FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_UI8)
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#define _VarUI8FromBool _VarI8FromI2
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NEGTST(ULONG64, signed char, VarUI8FromI1);
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SIMPLE(ULONG64, USHORT, VarUI8FromUI2);
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NEGTST(ULONG64, LONG, VarUI8FromI4);
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SIMPLE(ULONG64, ULONG, VarUI8FromUI4);
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#define _VarUI8FromDec VarUI8FromDec
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NEGTST(ULONG64, LONG64, VarUI8FromI8);
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/* R4 (float) */
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SIMPLE(float, BYTE, VarR4FromUI1);
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SIMPLE(float, SHORT, VarR4FromI2);
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RETTYP _VarR4FromR8(double i, float* o) {
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double d = i < 0.0 ? -i : i;
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if (d > R4_MAX) return DISP_E_OVERFLOW;
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*o = i;
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return S_OK;
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}
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RETTYP _VarR4FromCy(CY i, float* o) { *o = (double)i.int64 / CY_MULTIPLIER_F; return S_OK; }
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#define _VarR4FromDate(dt,out) _VarR4FromR8((double)dt,out)
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#define _VarR4FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_R4)
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#define _VarR4FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_R4)
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#define _VarR4FromBool _VarR4FromI2
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SIMPLE(float, signed char, VarR4FromI1);
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SIMPLE(float, USHORT, VarR4FromUI2);
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SIMPLE(float, LONG, VarR4FromI4);
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SIMPLE(float, ULONG, VarR4FromUI4);
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#define _VarR4FromDec VarR4FromDec
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SIMPLE(float, LONG64, VarR4FromI8);
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SIMPLE(float, ULONG64, VarR4FromUI8);
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/* R8 (double) */
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SIMPLE(double, BYTE, VarR8FromUI1);
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SIMPLE(double, SHORT, VarR8FromI2);
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SIMPLE(double, float, VarR8FromR4);
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RETTYP _VarR8FromCy(CY i, double* o) { *o = (double)i.int64 / CY_MULTIPLIER_F; return S_OK; }
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SIMPLE(double, DATE, VarR8FromDate);
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#define _VarR8FromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_R8)
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#define _VarR8FromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_R8)
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#define _VarR8FromBool _VarR8FromI2
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SIMPLE(double, signed char, VarR8FromI1);
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SIMPLE(double, USHORT, VarR8FromUI2);
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SIMPLE(double, LONG, VarR8FromI4);
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SIMPLE(double, ULONG, VarR8FromUI4);
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#define _VarR8FromDec VarR8FromDec
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SIMPLE(double, LONG64, VarR8FromI8);
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SIMPLE(double, ULONG64, VarR8FromUI8);
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/* BOOL */
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#define BOOLFUNC(src, func) RETTYP _##func(src in, VARIANT_BOOL* out) { \
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*out = in ? VARIANT_TRUE : VARIANT_FALSE; return S_OK; }
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BOOLFUNC(signed char,VarBoolFromI1);
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BOOLFUNC(BYTE,VarBoolFromUI1);
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BOOLFUNC(SHORT,VarBoolFromI2);
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BOOLFUNC(USHORT,VarBoolFromUI2);
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BOOLFUNC(LONG,VarBoolFromI4);
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BOOLFUNC(ULONG,VarBoolFromUI4);
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BOOLFUNC(LONG64,VarBoolFromI8);
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BOOLFUNC(ULONG64,VarBoolFromUI8);
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#define _VarBoolFromR4(flt,out) _VarBoolFromR8((double)flt,out)
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BOOLFUNC(double,VarBoolFromR8);
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#define _VarBoolFromCy(i,o) _VarBoolFromI8(i.int64,o)
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#define _VarBoolFromDate(dt,out) _VarBoolFromR8((double)dt,out)
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#define _VarBoolFromStr VarBoolFromStr
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#define _VarBoolFromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, (BYTE*)out, VT_BOOL)
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#define _VarBoolFromDec VarBoolFromDec
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/* DECIMAL */
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#define _VarDecFromUI1 VarDecFromUI4
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#define _VarDecFromI2 VarDecFromI4
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#define _VarDecFromR4 VarDecFromR8
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#define _VarDecFromR8 VarDecFromR8
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#define _VarDecFromCy VarDecFromCy
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#define _VarDecFromDate(dt,out) VarDecFromR8((double)dt,out)
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#define _VarDecFromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_DECIMAL)
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#define _VarDecFromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_DECIMAL)
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#define _VarDecFromBool VarDecFromBool
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#define _VarDecFromI1 VarDecFromI4
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#define _VarDecFromUI2 VarDecFromUI4
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#define _VarDecFromI4 VarDecFromI4
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#define _VarDecFromUI4 VarDecFromUI4
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#define _VarDecFromI8 VarDecFromI8
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#define _VarDecFromUI8 VarDecFromUI8
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/* CY (Currency) */
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#define _VarCyFromUI1 VarCyFromR8
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#define _VarCyFromI2 VarCyFromR8
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#define _VarCyFromR4 VarCyFromR8
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#define _VarCyFromR8 VarCyFromR8
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#define _VarCyFromDate VarCyFromR8
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#define _VarCyFromStr(str,lcid,flags,out) VARIANT_NumberFromBstr(str,lcid,flags,(BYTE*)out,VT_CY)
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#define _VarCyFromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_CY)
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#define _VarCyFromBool VarCyFromR8
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#define _VarCyFromI1 VarCyFromR8
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#define _VarCyFromUI2 VarCyFromR8
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#define _VarCyFromI4 VarCyFromR8
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#define _VarCyFromUI4 VarCyFromR8
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#define _VarCyFromDec VarCyFromDec
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RETTYP _VarCyFromI8(LONG64 i, CY* o) {
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if (i <= (I8_MIN/CY_MULTIPLIER) || i >= (I8_MAX/CY_MULTIPLIER)) return DISP_E_OVERFLOW;
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o->int64 = i * CY_MULTIPLIER;
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return S_OK;
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}
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#define _VarCyFromUI8 VarCyFromR8
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/* DATE */
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#define _VarDateFromUI1 VarDateFromR8
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#define _VarDateFromI2 VarDateFromR8
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#define _VarDateFromR4 VarDateFromR8
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#define _VarDateFromR8 VarDateFromR8
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#define _VarDateFromCy VarDateFromCy
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#define _VarDateFromStr VarDateFromStr
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#define _VarDateFromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_DATE)
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#define _VarDateFromBool VarDateFromR8
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#define _VarDateFromI1 VarDateFromR8
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#define _VarDateFromUI2 VarDateFromR8
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|
#define _VarDateFromI4 VarDateFromR8
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#define _VarDateFromUI4 VarDateFromR8
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#define _VarDateFromDec VarDateFromDec
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|
#define _VarDateFromI8 VarDateFromR8
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#define _VarDateFromUI8 VarDateFromR8
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|
|
|
/* BSTR */
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|
#define _VarBstrFromUI1 VarBstrFromUI4
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|
#define _VarBstrFromI2 VarBstrFromI4
|
|
#define _VarBstrFromR4 VarBstrFromR8
|
|
#define _VarBstrFromR8 VarBstrFromR8
|
|
#define _VarBstrFromCy VarBstrFromCy
|
|
#define _VarBstrFromDate VarBstrFromDate
|
|
#define _VarBstrFromDisp(disp,lcid,out) VARIANT_FromDisp(disp, lcid, out, VT_BSTR)
|
|
#define _VarBstrFromBool VarBstrFromBool
|
|
#define _VarBstrFromI1 VarBstrFromI4
|
|
#define _VarBstrFromUI2 VarBstrFromUI4
|
|
#define _VarBstrFromI4 VarBstrFromI4
|
|
#define _VarBstrFromUI4 VarBstrFromUI4
|
|
#define _VarBstrFromDec VarBstrFromDec
|
|
#define _VarBstrFromI8 VarBstrFromI8
|
|
#define _VarBstrFromUI8 VarBstrFromUI8
|
|
|
|
/* Macro to inline conversion from a float or double to any integer type,
|
|
* rounding according to the 'dutch' convention.
|
|
*/
|
|
#define OLEAUT32_DutchRound(typ, value, res) do { \
|
|
double whole = floor((double)value), fract = (double)value - whole; \
|
|
if (fract > 0.5) res = (typ)whole + (typ)1; \
|
|
else if (fract == 0.5) { typ is_odd = (typ)whole & 1; res = whole + is_odd; } \
|
|
else if (fract >= 0.0) res = (typ)whole; \
|
|
else if (fract == -0.5) { typ is_odd = (typ)whole & 1; res = whole - is_odd; } \
|
|
else if (fract > -0.5) res = (typ)whole; \
|
|
else res = (typ)whole - (typ)1; \
|
|
} while(0);
|
|
|
|
/* Localised text for variant conversions */
|
|
typedef struct tagVARIANT_TEXT
|
|
{
|
|
LPCWSTR szText;
|
|
BYTE langId;
|
|
BYTE iOffsetFalse;
|
|
BYTE iOffsetYes;
|
|
BYTE iOffsetNo;
|
|
BYTE iOffsetOn;
|
|
BYTE iOffsetOff;
|
|
} VARIANT_TEXT;
|
|
|
|
#define NUM_LOCALISED_LANGS 13
|
|
|
|
extern const VARIANT_TEXT VARIANT_LocalisedTextList[NUM_LOCALISED_LANGS];
|
|
|
|
const VARIANT_TEXT *VARIANT_GetLocalisedText(LANGID);
|
|
|
|
/* The localised characters that make up a valid number */
|
|
typedef struct tagVARIANT_NUMBER_CHARS
|
|
{
|
|
WCHAR cNegativeSymbol;
|
|
WCHAR cPositiveSymbol;
|
|
WCHAR cDecimalPoint;
|
|
WCHAR cDigitSeperator;
|
|
WCHAR cCurrencyLocal;
|
|
WCHAR cCurrencyLocal2;
|
|
WCHAR cCurrencyDecimalPoint;
|
|
WCHAR cCurrencyDigitSeperator;
|
|
} VARIANT_NUMBER_CHARS;
|
|
|
|
void VARIANT_GetLocalisedNumberChars(VARIANT_NUMBER_CHARS*,LCID,DWORD);
|