c75c684458
Files correlati : cg3 Ricompilazione Demo : [ ] Commento : Aggiunto insertore per TVariant git-svn-id: svn://10.65.10.50/trunk@14987 c028cbd2-c16b-5b4b-a496-9718f37d4682
105 lines
2.7 KiB
C++
Executable File
105 lines
2.7 KiB
C++
Executable File
#ifndef __VARIANT_H
|
|
#define __VARIANT_H
|
|
|
|
#ifndef __DATE_H
|
|
#include <date.h>
|
|
#endif
|
|
|
|
#ifndef __REAL_H
|
|
#include <real.h>
|
|
#endif
|
|
|
|
#ifndef __RECTYPES_H
|
|
#include <rectypes.h>
|
|
#endif
|
|
|
|
///////////////////////////////////////////////////////////
|
|
// TVariant
|
|
///////////////////////////////////////////////////////////
|
|
|
|
class TVariant : public TSortable
|
|
{
|
|
TFieldtypes _type;
|
|
void* _ptr;
|
|
|
|
protected:
|
|
virtual TObject* dup() const { return new TVariant(*this); }
|
|
virtual word class_id() const { return CLASS_VARIANT; }
|
|
virtual bool is_kind_of(word cid) const;
|
|
void copy(const TVariant& var);
|
|
|
|
public:
|
|
TFieldtypes type() const { return _type; } // Internal use only
|
|
bool is_string() const { return _type == _alfafld; }
|
|
bool is_date() const { return _type == _datefld; }
|
|
bool is_empty() const;
|
|
bool is_null() const { return _type == _nullfld; }
|
|
bool is_zero() const;
|
|
void set_null();
|
|
|
|
void set(const char* str);
|
|
void set(const real& r);
|
|
void set(const long n);
|
|
void set(const TDate& d);
|
|
|
|
TVariant& operator=(const TVariant& var) { copy(var); return *this; }
|
|
TVariant& operator=(const char* str) { set(str); return *this; }
|
|
TVariant& operator=(const real& r) { set(r); return *this; }
|
|
TVariant& operator=(const long n) { set(n); return *this; }
|
|
TVariant& operator=(const TDate& d) { set(d); return *this; }
|
|
TVariant& operator=(bool b) { set(long(b)); return *this; }
|
|
|
|
const TString& as_string() const;
|
|
bool as_string(TString& str) const;
|
|
real as_real() const;
|
|
long as_int() const;
|
|
TDate as_date() const;
|
|
bool as_bool() const;
|
|
unsigned long as_color() const;
|
|
|
|
void convert_to(TFieldtypes ft);
|
|
|
|
virtual void print_on(ostream& out) const;
|
|
virtual int compare(const TSortable& s) const;
|
|
TVariant& add(const TVariant& var);
|
|
TVariant& sub(const TVariant& var);
|
|
|
|
TVariant() : _type(_nullfld), _ptr(NULL) { }
|
|
TVariant(const char* str) : _type(_alfafld), _ptr(new TString(str)) { }
|
|
TVariant(const real& num) : _type(_realfld), _ptr(new real(num)) { };
|
|
TVariant(const TDate& d) : _type(_datefld), _ptr((void*)d.date2ansi()) { };
|
|
TVariant(long num) : _type(_longfld), _ptr((void*)num) { };
|
|
TVariant(bool ok) : _type(_longfld), _ptr((void*)ok) { };
|
|
TVariant(const TVariant& var) : _type(_nullfld), _ptr(NULL) { copy(var); }
|
|
virtual ~TVariant() { set_null(); }
|
|
};
|
|
|
|
extern const TVariant NULL_VARIANT;
|
|
|
|
class TVariant_stack : public TObject
|
|
{
|
|
TArray _var;
|
|
int _sp;
|
|
|
|
public:
|
|
int items() const { return _sp; }
|
|
bool empty() const { return _sp <= 0; }
|
|
bool drop();
|
|
TVariant& pop();
|
|
TVariant& peek(int depth = 0);
|
|
void roll(int depth);
|
|
|
|
void push(const TVariant& var);
|
|
void push(long n);
|
|
void push(const real& n);
|
|
void push(const char* str);
|
|
void reset();
|
|
bool overflow() const;
|
|
|
|
TVariant_stack() : _sp(0) { }
|
|
};
|
|
|
|
|
|
#endif
|
|
|