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mariadb/storage/connect/value.h
Dave Gosselin db0c28eff8 MDEV-33746 Supply missing override markings 
Find and fix missing virtual override markings.  Updates cmake
maintainer flags to include -Wsuggest-override and
-Winconsistent-missing-override.
2024-06-20 11:32:13 -04:00

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/**************** Value H Declares Source Code File (.H) ***************/
/* Name: VALUE.H Version 2.4 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2001-2019 */
/* */
/* This file contains the VALUE and derived classes declares. */
/***********************************************************************/
#ifndef __VALUE__H__
#define __VALUE__H__
/***********************************************************************/
/* Include required application header files */
/* assert.h is header required when using the assert function. */
/* block.h is header containing Block global declarations. */
/***********************************************************************/
#include "assert.h"
#include "block.h"
/***********************************************************************/
/* This should list the processors accepting unaligned numeral values.*/
/***********************************************************************/
#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64) || defined(_M_IA64)
#define UNALIGNED_OK
#endif
/***********************************************************************/
/* Types used in some class definitions. */
/***********************************************************************/
enum CONV {CNV_ANY = 0, /* Convert to any type */
CNV_CHAR = 1, /* Convert to character type */
CNV_NUM = 2}; /* Convert to numeric type */
/***********************************************************************/
/* Types used in some class definitions. */
/***********************************************************************/
class CONSTANT; // For friend setting
typedef struct _datpar *PDTP; // For DTVAL
/***********************************************************************/
/* Utilities used to test types and to allocated values. */
/***********************************************************************/
// Exported functions
DllExport PCSZ GetTypeName(int);
DllExport unsigned GetTypeSize(int, unsigned);
#ifdef ODBC_SUPPORT
/* This function is exported for use in OEM table type DLLs */
DllExport int TranslateSQLType(int stp, int prec,
int& len, char& v, bool& w);
#endif
DllExport const char *GetFormatType(int);
DllExport int GetFormatType(char);
DllExport bool IsTypeChar(int type);
DllExport bool IsTypeNum(int type);
DllExport int ConvertType(int, int, CONV, bool match = false);
DllExport PVAL AllocateValue(PGLOBAL, void *, short, short = 2);
DllExport PVAL AllocateValue(PGLOBAL, PVAL, int = TYPE_VOID, int = 0);
DllExport PVAL AllocateValue(PGLOBAL, int, int len = 0, int prec = 0,
bool uns = false, PCSZ fmt = NULL);
DllExport ulonglong CharToNumber(PCSZ, int, ulonglong, bool,
bool *minus = NULL, bool *rc = NULL);
DllExport BYTE OpBmp(PGLOBAL g, OPVAL opc);
/***********************************************************************/
/* Class VALUE represents a constant or variable of any valid type. */
/***********************************************************************/
class DllExport VALUE : public BLOCK {
friend class CONSTANT; // The only object allowed to use SetConstFormat
friend class SWAP; // The only class allowed to access protected
public:
// Constructors
// Implementation
virtual bool IsTypeNum(void) = 0;
virtual bool IsZero(void) = 0;
virtual bool IsCi(void) {return false;}
virtual bool IsUnsigned(void) {return Unsigned;}
virtual void Reset(void) = 0;
virtual int GetSize(void) = 0;
virtual int GetValLen(void) = 0;
virtual int GetValPrec(void) = 0;
virtual int GetLength(void) {return 1;}
virtual PSZ GetCharValue(void) {assert(false); return NULL;}
virtual char GetTinyValue(void) {assert(false); return 0;}
virtual uchar GetUTinyValue(void) {assert(false); return 0;}
virtual short GetShortValue(void) {assert(false); return 0;}
virtual ushort GetUShortValue(void) {assert(false); return 0;}
virtual int GetIntValue(void) = 0;
virtual uint GetUIntValue(void) = 0;
virtual longlong GetBigintValue(void) = 0;
virtual ulonglong GetUBigintValue(void) = 0;
virtual double GetFloatValue(void) = 0;
virtual void *GetTo_Val(void) = 0;
virtual void SetPrec(int prec) {Prec = prec;}
bool IsNull(void) {return (Nullable && Null);}
void SetNull(bool b) {Null = (Nullable ? b : false);}
bool GetNullable(void) {return Nullable;}
void SetNullable(bool b) {Nullable = b;}
int GetType(void) {return Type;}
int GetClen(void) {return Clen;}
void SetGlobal(PGLOBAL g) {Global = g;}
// Methods
virtual bool SetValue_pval(PVAL valp, bool chktype = false) = 0;
virtual bool SetValue_char(const char *p, int n) = 0;
virtual void SetValue_psz(PCSZ s) = 0;
virtual void SetValue_bool(bool) {assert(false);}
virtual int CompareValue(PVAL vp) = 0;
virtual BYTE TestValue(PVAL vp);
virtual void SetValue(char) {assert(false);}
virtual void SetValue(uchar) {assert(false);}
virtual void SetValue(short) {assert(false);}
virtual void SetValue(ushort) {assert(false);}
virtual void SetValue(int) {assert(false);}
virtual void SetValue(uint) {assert(false);}
virtual void SetValue(longlong) {assert(false);}
virtual void SetValue(ulonglong) {assert(false);}
virtual void SetValue(double) {assert(false);}
virtual void SetValue_pvblk(PVBLK blk, int n) = 0;
virtual void SetBinValue(void* p) = 0;
virtual bool GetBinValue(void *buf, int buflen, bool go) = 0;
virtual int ShowValue(char *buf, int len) = 0;
virtual char *GetCharString(char *p) = 0;
virtual bool IsEqual(PVAL vp, bool chktype) = 0;
virtual bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op);
virtual bool FormatValue(PVAL vp, PCSZ fmt) = 0;
void Printf(PGLOBAL g, FILE *, uint) override;
void Prints(PGLOBAL g, char *ps, uint z) override;
/**
Set value from a non-aligned in-memory value in the machine byte order.
TYPE can be either of:
- int, short, longlong
- uint, ushort, ulonglong
- float, double
@param - a pointer to a non-aligned value of type TYPE.
*/
template<typename TYPE>
void SetValueNonAligned(const char *p)
{
#if defined(UNALIGNED_OK)
SetValue(*((TYPE*)p)); // x86 can cast non-aligned memory directly
#else
TYPE tmp; // a slower version for non-x86 platforms
memcpy(&tmp, p, sizeof(tmp));
SetValue(tmp);
#endif
} // end of SetValueNonAligned
/**
Get value from a non-aligned in-memory value in the machine byte order.
TYPE can be either of:
- int, short, longlong
- uint, ushort, ulonglong
- float, double
@params - a pointer to a non-aligned value of type TYPE, the TYPE value.
*/
template<typename TYPE>
void GetValueNonAligned(char *p, TYPE n)
{
#if defined(UNALIGNED_OK)
*(TYPE *)p = n; // x86 can cast non-aligned memory directly
#else
TYPE tmp = n; // a slower version for non-x86 platforms
memcpy(p, &tmp, sizeof(tmp));
#endif
} // end of SetValueNonAligned
protected:
virtual bool SetConstFormat(PGLOBAL, FORMAT&) = 0;
const char *GetXfmt(void);
// Constructor used by derived classes
VALUE(int type, bool un = false);
// Members
PGLOBAL Global; // To reduce arglist
const char *Fmt;
const char *Xfmt;
bool Nullable; // True if value can be null
bool Null; // True if value is null
bool Unsigned; // True if unsigned
int Type; // The value type
int Clen; // Internal value length
int Prec;
}; // end of class VALUE
/***********************************************************************/
/* Class TYPVAL: represents a typed value. */
/***********************************************************************/
template <class TYPE>
class DllExport TYPVAL : public VALUE {
public:
// Constructor
TYPVAL(TYPE n, int type, int prec = 0, bool un = false);
// Implementation
bool IsTypeNum(void) override {return true;}
bool IsZero(void) override {return Tval == 0;}
void Reset(void) override {Tval = 0;}
int GetValLen(void) override;
int GetValPrec() override {return Prec;}
int GetSize(void) override {return sizeof(TYPE);}
//virtual PSZ GetCharValue(void) {return VALUE::GetCharValue();}
char GetTinyValue(void) override {return (char)Tval;}
uchar GetUTinyValue(void) override {return (uchar)Tval;}
short GetShortValue(void) override {return (short)Tval;}
ushort GetUShortValue(void) override {return (ushort)Tval;}
int GetIntValue(void) override {return (int)Tval;}
uint GetUIntValue(void) override {return (uint)Tval;}
longlong GetBigintValue(void) override {return (longlong)Tval;}
ulonglong GetUBigintValue(void) override {return (ulonglong)Tval;}
double GetFloatValue(void) override {return (double)Tval;}
void *GetTo_Val(void) override {return &Tval;}
// Methods
bool SetValue_pval(PVAL valp, bool chktype) override;
bool SetValue_char(const char *p, int n) override;
void SetValue_psz(PCSZ s) override;
void SetValue_bool(bool b) override {Tval = (b) ? 1 : 0;}
int CompareValue(PVAL vp) override;
void SetValue(char c) override {Tval = (TYPE)c; Null = false;}
void SetValue(uchar c) override {Tval = (TYPE)c; Null = false;}
void SetValue(short i) override {Tval = (TYPE)i; Null = false;}
void SetValue(ushort i) override {Tval = (TYPE)i; Null = false;}
void SetValue(int n) override {Tval = (TYPE)n; Null = false;}
void SetValue(uint n) override {Tval = (TYPE)n; Null = false;}
void SetValue(longlong n) override {Tval = (TYPE)n; Null = false;}
void SetValue(ulonglong n) override {Tval = (TYPE)n; Null = false;}
void SetValue(double f) override {Tval = (TYPE)f; Null = false;}
void SetValue_pvblk(PVBLK blk, int n) override;
void SetBinValue(void *p) override;
bool GetBinValue(void *buf, int buflen, bool go) override;
int ShowValue(char *buf, int len) override;
char *GetCharString(char *p) override;
bool IsEqual(PVAL vp, bool chktype) override;
bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op) override;
bool SetConstFormat(PGLOBAL, FORMAT&) override;
bool FormatValue(PVAL vp, PCSZ fmt) override;
protected:
static TYPE MinMaxVal(bool b);
TYPE SafeAdd(TYPE n1, TYPE n2);
TYPE SafeMult(TYPE n1, TYPE n2);
bool Compall(PGLOBAL g, PVAL *vp, int np, OPVAL op);
// Default constructor not to be used
TYPVAL(void) : VALUE(TYPE_ERROR) {}
// Specialized functions
static ulonglong MaxVal(void);
TYPE GetTypedValue(PVAL vp);
TYPE GetTypedValue(PVBLK blk, int n);
// TYPE GetTypedValue(PSZ s);
// Members
TYPE Tval;
}; // end of class TYPVAL
/***********************************************************************/
/* Specific STRING class. */
/***********************************************************************/
template <>
class DllExport TYPVAL<PSZ>: public VALUE {
friend class SWAP; // The only class allowed to offsets Strg
public:
// Constructors
TYPVAL(PSZ s, short c = 0);
TYPVAL(PGLOBAL g, PSZ s, int n, int c);
// Implementation
bool IsTypeNum(void) override {return false;}
bool IsZero(void) override {return *Strp == 0;}
void Reset(void) override {*Strp = 0;}
int GetValLen(void) override {return Len;};
int GetValPrec() override {return (Ci) ? 1 : 0;}
int GetSize(void) override {return (Strp) ? (int)strlen(Strp) : 0;}
PSZ GetCharValue(void) override {return Strp;}
char GetTinyValue(void) override;
uchar GetUTinyValue(void) override;
short GetShortValue(void) override;
ushort GetUShortValue(void) override;
int GetIntValue(void) override;
uint GetUIntValue(void) override;
longlong GetBigintValue(void) override;
ulonglong GetUBigintValue(void) override;
double GetFloatValue(void) override {return atof(Strp);}
void *GetTo_Val(void) override {return Strp;}
void SetPrec(int prec) override {Ci = prec != 0;}
// Methods
bool SetValue_pval(PVAL valp, bool chktype) override;
bool SetValue_char(const char *p, int n) override;
void SetValue_psz(PCSZ s) override;
void SetValue_pvblk(PVBLK blk, int n) override;
void SetValue(char c) override;
void SetValue(uchar c) override;
void SetValue(short i) override;
void SetValue(ushort i) override;
void SetValue(int n) override;
void SetValue(uint n) override;
void SetValue(longlong n) override;
void SetValue(ulonglong n) override;
void SetValue(double f) override;
void SetBinValue(void *p) override;
int CompareValue(PVAL vp) override;
bool GetBinValue(void *buf, int buflen, bool go) override;
int ShowValue(char *buf, int len) override;
char *GetCharString(char *p) override;
bool IsEqual(PVAL vp, bool chktype) override;
bool Compute(PGLOBAL g, PVAL *vp, int np, OPVAL op) override;
bool FormatValue(PVAL vp, PCSZ fmt) override;
bool SetConstFormat(PGLOBAL, FORMAT&) override;
void Prints(PGLOBAL g, char *ps, uint z) override;
protected:
// Members
PSZ Strp;
bool Ci; // true if case insensitive
int Len;
}; // end of class TYPVAL<PSZ>
/***********************************************************************/
/* Specific DECIMAL class. */
/***********************************************************************/
class DllExport DECVAL: public TYPVAL<PSZ> {
public:
// Constructors
DECVAL(PSZ s);
DECVAL(PGLOBAL g, PSZ s, int n, int prec, bool uns);
// Implementation
bool IsTypeNum(void) override {return true;}
bool IsZero(void) override;
void Reset(void) override;
int GetValPrec() override {return Prec;}
// Methods
bool GetBinValue(void *buf, int buflen, bool go) override;
int ShowValue(char *buf, int len) override;
bool IsEqual(PVAL vp, bool chktype) override;
int CompareValue(PVAL vp) override;
protected:
// Members
}; // end of class DECVAL
/***********************************************************************/
/* Specific BINARY class. */
/***********************************************************************/
class DllExport BINVAL: public VALUE {
friend class SWAP; // The only class allowed to offsets pointers
public:
// Constructors
//BINVAL(void *p);
BINVAL(PGLOBAL g, void *p, int cl, int n);
// Implementation
bool IsTypeNum(void) override {return false;}
bool IsZero(void) override;
void Reset(void) override;
int GetValLen(void) override {return Clen;};
int GetValPrec() override {return 0;}
int GetSize(void) override {return Len;}
PSZ GetCharValue(void) override {return (PSZ)Binp;}
char GetTinyValue(void) override;
uchar GetUTinyValue(void) override;
short GetShortValue(void) override;
ushort GetUShortValue(void) override;
int GetIntValue(void) override;
uint GetUIntValue(void) override;
longlong GetBigintValue(void) override;
ulonglong GetUBigintValue(void) override;
double GetFloatValue(void) override;
void *GetTo_Val(void) override {return Binp;}
// Methods
bool SetValue_pval(PVAL valp, bool chktype) override;
bool SetValue_char(const char *p, int n) override;
void SetValue_psz(PCSZ s) override;
void SetValue_pvblk(PVBLK blk, int n) override;
void SetValue(char c) override;
void SetValue(uchar c) override;
void SetValue(short i) override;
void SetValue(ushort i) override;
void SetValue(int n) override;
void SetValue(uint n) override;
void SetValue(longlong n) override;
void SetValue(ulonglong n) override;
void SetValue(double f) override;
void SetBinValue(void *p) override;
virtual void SetBinValue(void* p, ulong len);
bool GetBinValue(void *buf, int buflen, bool go) override;
int CompareValue(PVAL) override {assert(false); return 0;}
int ShowValue(char *buf, int len) override;
char *GetCharString(char *p) override;
bool IsEqual(PVAL vp, bool chktype) override;
bool FormatValue(PVAL vp, PCSZ fmt) override;
bool SetConstFormat(PGLOBAL, FORMAT&) override;
protected:
// Members
void *Binp;
char *Chrp;
int Len;
}; // end of class BINVAL
/***********************************************************************/
/* Class DTVAL: represents a time stamp value. */
/***********************************************************************/
class DllExport DTVAL : public TYPVAL<int> {
public:
// Constructors
DTVAL(PGLOBAL g, int n, int p, PCSZ fmt);
DTVAL(int n);
using TYPVAL<int>::SetValue;
// Implementation
bool SetValue_pval(PVAL valp, bool chktype) override;
bool SetValue_char(const char *p, int n) override;
void SetValue_psz(PCSZ s) override;
void SetValue_pvblk(PVBLK blk, int n) override;
void SetValue(int n) override;
PSZ GetCharValue(void) override { return Sdate; }
char *GetCharString(char *p) override;
int ShowValue(char *buf, int len) override;
bool FormatValue(PVAL vp, PCSZ fmt) override;
bool SetFormat(PGLOBAL g, PCSZ fmt, int len, int year = 0);
bool SetFormat(PGLOBAL g, PVAL valp);
bool IsFormatted(void) {return Pdtp != NULL;}
bool MakeTime(struct tm *ptm);
static void SetTimeShift(void);
static int GetShift(void) {return Shift;}
// Methods
bool MakeDate(PGLOBAL g, int *val, int nval);
struct tm *GetGmTime(struct tm *);
protected:
// Default constructor not to be used
DTVAL(void) : TYPVAL<int>() {}
// Members
static int Shift; // Time zone shift in seconds
PDTP Pdtp; // To the DATPAR structure
char *Sdate; // Utility char buffer
int DefYear; // Used by ExtractDate
int Len; // Used by CHAR scalar function
}; // end of class DTVAL
#endif // __VALUE__H__
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