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