cppvariant

cppvariant Commit Details


Date:2013-06-28 00:10:00 (11 years 9 months ago)
Author:Natalie Adams
Branch:default
Commit:39ba50dd77ee
Message:Adding source and sample
Changes:
Amain.cpp (full)
Avariant.h (full)

File differences

main.cpp
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#include <iostream>␍␊
#include <map>␍␊
#include "variant.h"␍␊
␍␊
class A { public: void woof() { cout << "woof" << endl; } };␍␊
class B : public A { public: void woof() { cout << "woof2" << endl; } };␍␊
␍␊
int main()␍␊
{␍␊
␉variant<> v1 = 1;␍␊
␉variant<> v2 = "2";␍␊
␉variant<> v3 = v1 + v2;␍␊
␉cout << v3 << endl;␍␊
␉//variant<A> a = new A();␍␊
␉//a = 444;␍␊
␉//a = (int)v3;␍␊
␉//cout << a << endl;␍␊
␉variant<A> a = new A();␍␊
␉variant<B> b = new B();␍␊
␉a = (A*)b;␍␊
␉//variant<A> a = new A();␍␊
␉//variant<B> b = new B();␍␊
␉//a = 5;␍␊
␉/*variant<> v = 123;␍␊
␉variant<> v3 = 33;␍␊
␉v3 = v;␍␊
␉int x = v;␍␊
␉cout << x << endl;␍␊
␉x += 1;␍␊
␉v = x;␍␊
␉cout << v << endl;*/␍␊
␉/*string x;␍␊
␉//cin >> x;␍␊
␉variant<> v = "10";␍␊
␉cout << v << endl;␍␊
␉v += 10;*/␍␊
␉//cout << v << endl;␍␊
␉//cin >> v;␍␊
␉//cout << v << endl;␍␊
␉/*cout << x << endl;␍␊
␉cout << v3 << endl;␍␊
␉cout << v << endl;␍␊
␉v = v + 1;␍␊
␉cout << v << endl;␍␊
␉variant<A> v2 = new A();␍␊
␉((A)v2).f();*/␍␊
␉//v2 = v;␍␊
␉//cout << v << endl;␍␊
␉//std::map<string, variant> t;␍␊
␉//t["test"] = 123;␍␊
␉//cout << t["test"].getInt() << endl;␍␊
␉/*variant v = "a";␍␊
␉variant v2 = "bb";␍␊
␉if (v < v2)␍␊
␉␉cout << "true" << endl;*/␍␊
␉//cout << v.getString() << endl;␍␊
}
variant.h
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#ifndef VARIANT_H␍␊
#define VARIANT_H␍␊
␍␊
#include <iostream>␍␊
#include <exception>␍␊
#include <map>␍␊
#include <sstream>␍␊
#include <typeinfo>␍␊
#include <string>␍␊
␍␊
using namespace std;␍␊
␍␊
enum VAR_TYPES { INT, CHAR, DOUBLE, STRING, OBJECT, NONE };␍␊
␍␊
//␊
// portable 64-bit integers␊
//␊
␊
#if defined(_MSC_VER) || defined(__BORLANDC__)␊
   typedef __int64             large;␊
   typedef unsigned __int64    ularge;␊
#  define LLCONST(a) (a##i64)␊
#else␊
   typedef long long           large;␊
   typedef unsigned long long  ularge;␊
#  define LLCONST(a) (a##ll)␊
#endif␍␊
␍␊
template<typename T>␍␊
T StrToType(std::string& str)␍␊
{␍␊
    std::istringstream ss(str);␍␊
    T ret;␍␊
    ss >> ret;␍␊
    return ret;␍␊
}␍␊
␍␊
template <typename T>␍␊
std::string TypeToStr (const T & obj )␍␊
{␍␊
    std::ostringstream ss;␍␊
    ss << obj;␍␊
    return ss.str();␍␊
}␍␊
␍␊
template <class T = void>␍␊
class variant␍␊
{␍␊
protected:␍␊
␉VAR_TYPES _type;␍␊
␉union {␍␊
␉␉large i;␍␊
␉␉char c;␍␊
␉␉double d;␍␊
␉␉string * s;␍␊
␉␉T * v;␍␊
␉} _container;␍␊
␍␊
␉void releaseObject() ␍␊
␉{ ␍␊
␉␉if (this->_type == STRING) ␍␊
␉␉␉delete this->_container.s;␍␊
␉␉if (this->_type == OBJECT && typeid(this->_container.v) != typeid(void*))␍␊
␉␉␉delete this->_container.v;␍␊
␍␊
␉␉this->_type = NONE; ␍␊
␉}␍␊
␉void setString(const string& s) ␍␊
␉{ ␍␊
␉␉this->_container.s = new string(s); ␍␊
␉␉this->_type = STRING; ␍␊
␉}␍␊
␍␊
␉void setObject(const T* o)␍␊
␉{␍␊
␉␉this->_container.v = o;␍␊
␉␉this->_type = OBJECT;␍␊
␉}␍␊
␉␍␊
public:␍␊
␉~variant() { releaseObject(); }␍␊
␉variant() { type = NONE; };␍␊
␍␊
␉variant(int i) ␍␊
␉{ ␍␊
␉␉this->_container.i = i; ␍␊
␉␉this->_type = INT; ␍␊
␉}␍␊
␉␍␊
␉variant(const string& s) ␍␊
␉{ ␍␊
␉␉setString(s);  ␍␊
␉}␍␊
␉␍␊
␉variant(const char* s) ␍␊
␉{ ␍␊
␉␉setString(s);  ␍␊
␉}␍␊
␍␊
␉variant(char c) ␍␊
␉{␍␊
␉␉this->_container.c = c;␍␊
␉␉this->_type = CHAR;␍␊
␉}␍␊
␍␊
␉variant(double d) ␍␊
␉{␍␊
␉␉this->_container.d = d;␍␊
␉␉this->_type = DOUBLE;␍␊
␉}␍␊
␍␊
␉variant(T * o) ␍␊
␉{␍␊
␉␉this->_container.v = o;␍␊
␉␉this->_type = OBJECT;␍␊
␉}␍␊
␉␍␊
␉variant operator=(const string& s) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉setString(s); ␍␊
␉␉return *this; ␍␊
␉}␍␊
␉␍␊
␉variant operator=(const char * s) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉setString(s); ␍␊
␉␉return *this; ␍␊
␉}␍␊
␉␍␊
␉variant operator=(large i) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉this->_type = INT; ␍␊
␉␉this->_container.i = i; ␍␊
␉␉return *this; ␍␊
␉}␍␊
␍␊
␉variant operator=(char c) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉this->_type = CHAR; ␍␊
␉␉this->_container.c = c; ␍␊
␉␉return *this; ␍␊
␉}␍␊
␍␊
␉variant operator=(int i) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉this->_type = INT; ␍␊
␉␉this->_container.i = i; ␍␊
␉␉return *this; ␍␊
␉}␍␊
␍␊
␉variant operator=(double d) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉this->_type = DOUBLE; ␍␊
␉␉this->_container.d = d; ␍␊
␉␉return *this; ␍␊
␉}␍␊
␍␊
␉variant operator=(T * o) ␍␊
␉{ ␍␊
␉␉releaseObject(); ␍␊
␉␉this->_type = OBJECT; ␍␊
␉␉this->_container.v = o; ␍␊
␉␉return *this; ␍␊
␉}␍␊
␍␊
␉variant operator=(variant<> & v) ␍␊
␉{ ␍␊
␉␉if (this != &v)␍␊
␉␉{␍␊
␉␉␉switch (v._type)␍␊
␉␉␉{␍␊
␉␉␉␉case STRING:␍␊
␉␉␉␉␉this->_container.s = v._container.s;␍␊
␉␉␉␉␉v._type = NONE;␍␊
␉␉␉␉␉return *this;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case INT:␍␊
␉␉␉␉␉this->_container.i = v._container.i;␍␊
␉␉␉␉␉return *this;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉this->_container.d = v._container.d;␍␊
␉␉␉␉␉return *this;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case CHAR:␍␊
␉␉␉␉␉this->_container.c = v._container.c;␍␊
␉␉␉␉␉return *this;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉v._type = NONE;␍␊
␉␉␉␉␉this->_container.v = v._container.v;␍␊
␉␉␉␉␉return *this;␍␊
␉␉␉␉␉break;␍␊
␉␉␉}␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉bool operator>(const variant& v)␍␊
␉{␍␊
␉␉if (this->type == NONE || v.type == NONE)␍␊
␉␉␉return true;␍␊
␍␊
␉␉if (this->type == STRING && v.type == STRING)␍␊
␉␉{␍␊
␉␉␉return *this->_container.s > *v._container.s;␍␊
␉␉} else if (this->_type == INT && v._type == INT)␍␊
␉␉{␍␊
␉␉␉return this->_container.i > this->_container.i;␍␊
␉␉} else {␍␊
␉␉␉return true;␍␊
␉␉}␍␊
␉}␍␊
␍␊
␉bool operator<(const variant & v)␍␊
␉{␍␊
␉␉return !(*this > v);␍␊
␉}␍␊
␍␊
␍␊
␉operator large() const␍␊
␉{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉return this->_container.i;␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉return StrToType<int>(this->_container.s);␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉return (large)this->_container.d;␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉return (large)this->_container.c;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉return (large)this->_container.v;␍␊
␍␊
␉␉}␍␊
␉␉return NULL;␍␊
␉}␍␊
␍␊
␉operator double() const␍␊
␉{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉return (double)this->_container.i;␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉return StrToType<double>(this->_container.s);␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉return (double)this->_container.d;␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉return (double)this->_container.c;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉return (double)this->_container.v;␍␊
␉␉}␍␊
␉␉return NULL;␍␊
␉}␍␊
␍␊
␉operator int() const␍␊
␉{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉return (int)this->_container.i;␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉return StrToType<int>(*this->_container.s);␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉return (int)this->_container.d;␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉return (int)this->_container.c;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉return (int)this->_container.v;␍␊
␍␊
␉␉}␍␊
␉␉return NULL;␍␊
␉}␍␊
␍␊
␉operator char() const␍␊
␉{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉return (char)this->_container.i;␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉return StrToType<char>(*this->_container.s);␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉return (char)this->_container.d;␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉return this->_container.c;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉return (char)this->_container.v;␍␊
␍␊
␉␉}␍␊
␉␉return NULL;␍␊
␉}␍␊
␍␊
␉operator string() const␍␊
␉{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉return TypeToStr<large>(this->_container.i);␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉return *this->_container.s;␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉return TypeToStr<double>(this->_container.d);␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉return TypeToStr<char>(this->_container.c);␍␊
␉␉␉␉break;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉return TypeToStr<T*>(this->_container.v);␍␊
␉␉␉␉break;␍␊
␍␊
␉␉}␍␊
␉␉return "";␍␊
␉}␍␊
␍␊
␉variant & operator+(const variant & v)␍␊
␉{␍␊
␉␉*this += v;␍␊
␉␉/*if (this->_type == v._type)␍␊
␉␉{␍␊
␉␉␉switch (this->_type)␍␊
␉␉␉{␍␊
␉␉␉␉case INT:␍␊
␉␉␉␉␉this->_container.i += v._container.i;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉this->_container.d += v._container.d;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case STRING:␍␊
␉␉␉␉␉*this->_container.s += *v._container.s;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case CHAR:␍␊
␉␉␉␉␉this->_container.c += v._container.c;␍␊
␉␉␉␉␉break;␍␊
␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉//*this->_container.v += *v._container.v;␍␊
␉␉␉␉␉//if (typeid(this->_container.v) != typeid(void*) && typeid(v._container.v) != typeid(void*))␍␊
␉␉␉␉␉//{␍␊
␉␉␉␉␉//␉T a = *this->_container.v;␍␊
␉␉␉␉␉//}␍␊
␉␉␉␉␉␉␍␊
␉␉␉␉␉break;␍␊
␉␉␉}␍␊
␉␉}*/␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(large i)␍␊
␉{␍␊
␉␉if (this->_type == INT)␍␊
␉␉{␍␊
␉␉␉this->_container.i += i;␍␊
␉␉}␍␊
␉␉else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉large i = StrToType(*this->_container.s) + i;␍␊
␉␉␉releaseObject();␍␊
␉␉␉this->_container.s = new string(TypeToStr<large>(i));␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(int i)␍␊
␉{␍␊
␉␉if (this->_type == INT)␍␊
␉␉{␍␊
␉␉␉this->_container.i += i;␍␊
␉␉} else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉large i2 = StrToType<large>(*this->_container.s) + i;␍␊
␉␉␉releaseObject();␍␊
␉␉␉this->_type = STRING;␍␊
␉␉␉this->_container.s = new string(TypeToStr<large>(i2));␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(const string & s)␍␊
␉{␍␊
␉␉if (this->_type == STRING)␍␊
␉␉␉(*this->_container.s) += s;␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(char c)␍␊
␉{␍␊
␉␉if (this->_type == CHAR)␍␊
␉␉{␍␊
␉␉␉this->_container.c += c;␍␊
␉␉} else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉(*this->_container.s) += c;␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(double d)␍␊
␉{␍␊
␉␉if (this->_type == DOUBLE)␍␊
␉␉␉this->_container.d += d;␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+(T * obj)␍␊
␉{␍␊
␉␉if (this->_type == OBJECT)␍␊
␉␉␉(*this->_container.o) += *obj;␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉/*variant & operator+=(void * o)␍␊
␉{␍␊
␉␉return *this;␍␊
␉}*/␍␊
␍␊
␉variant & operator+=(const variant & v)␍␊
␉{␍␊
␉␉//if (this->_type == v._type)␍␊
␉␉//{␍␊
␉␉switch (this->_type)␍␊
␉␉{␍␊
␉␉␉case INT:␍␊
␉␉␉␉switch (v._type)␍␊
␉␉␉␉{␍␊
␉␉␉␉␉case INT:␍␊
␉␉␉␉␉␉this->_container.i += v._container.i;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case CHAR:␍␊
␉␉␉␉␉␉this->_container.i += (large)v._container.c;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉␉this->_container.i += (large)v._container.d;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case STRING:␍␊
␉␉␉␉␉␉this->_container.i += StrToType<large>(*v._container.s);␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉␍␊
␉␉␉␉}␍␊
␉␉␉␉break;␍␊
␉␉␉case DOUBLE:␍␊
␉␉␉␉switch (v._type)␍␊
␉␉␉␉{␍␊
␉␉␉␉␉case INT:␍␊
␉␉␉␉␉␉this->_container.d += (double)v._container.i;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case CHAR:␍␊
␉␉␉␉␉␉this->_container.d += (double)v._container.c;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉␉this->_container.d += v._container.d;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case STRING:␍␊
␉␉␉␉␉␉this->_container.d += StrToType<double>(*v._container.s);␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉␍␊
␉␉␉␉}␍␊
␉␉␉␉break;␍␊
␉␉␉case STRING:␍␊
␉␉␉␉switch (v._type)␍␊
␉␉␉␉{␍␊
␉␉␉␉␉case INT:␍␊
␉␉␉␉␉␉*this->_container.s += TypeToStr<large>(v._container.i);␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case CHAR:␍␊
␉␉␉␉␉␉*this->_container.s += v._container.c;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉␉*this->_container.s += TypeToStr<double>(v._container.d);␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case STRING:␍␊
␉␉␉␉␉␉*this->_container.s += *v._container.s;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉␍␊
␉␉␉␉}␍␊
␉␉␉␉break;␍␊
␉␉␉case CHAR:␍␊
␉␉␉␉switch (v._type)␍␊
␉␉␉␉{␍␊
␉␉␉␉␉case INT:␍␊
␉␉␉␉␉␉this->_container.c += TypeToStr<large>(v._container.i)[0];␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case CHAR:␍␊
␉␉␉␉␉␉this->_container.c += v._container.c;␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case DOUBLE:␍␊
␉␉␉␉␉␉this->_container.c += TypeToStr<double>(v._container.d)[0];␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case STRING:␍␊
␉␉␉␉␉␉this->_container.c += (*v._container.s)[0];␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉case OBJECT:␍␊
␉␉␉␉␉␉break;␍␊
␉␉␉␉␉␍␊
␉␉␉␉}␍␊
␉␉␉␉break;␍␊
␉␉␉case OBJECT:␍␊
␉␉␉␉//this->_container.v += v._container.v;␍␊
␉␉␉␉break;␍␊
␉␉}␍␊
␉␉//}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(large i)␍␊
␉{␍␊
␉␉if (this->_type == INT)␍␊
␉␉{␍␊
␉␉␉this->_container.i += i;␍␊
␉␉}␍␊
␉␉else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉large i = StrToType(*this->_container.s) + i;␍␊
␉␉␉releaseObject();␍␊
␉␉␉this->_container.s = new string(TypeToStr<large>(i));␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(int i)␍␊
␉{␍␊
␉␉if (this->_type == INT)␍␊
␉␉{␍␊
␉␉␉this->_container.i += i;␍␊
␉␉} else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉large i2 = StrToType<large>(*this->_container.s) + i;␍␊
␉␉␉releaseObject();␍␊
␉␉␉this->_type = STRING;␍␊
␉␉␉this->_container.s = new string(TypeToStr<large>(i2));␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(const string & s)␍␊
␉{␍␊
␉␉if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉(*this->_container.s) += s;␍␊
␉␉} else if (this->_type == INT) {␍␊
␉␉␉large i = StrToType<large>(const_cast<string>(s));␍␊
␉␉␉this->_container.i += i;␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(const char * s)␍␊
␉{␍␊
␉␉if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉(*this->_container.s) += s;␍␊
␉␉} else if (this->_type == INT)␍␊
␉␉{␍␊
␉␉␉string tmp = string(s);␍␊
␉␉␉large i = StrToType<large>(tmp);␍␊
␉␉␉this->_container.i += i;␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(char c)␍␊
␉{␍␊
␉␉if (this->_type == CHAR)␍␊
␉␉{␍␊
␉␉␉this->_container.c += c;␍␊
␉␉} else if (this->_type == STRING)␍␊
␉␉{␍␊
␉␉␉(*this->_container.s) += c;␍␊
␉␉}␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(double d)␍␊
␉{␍␊
␉␉if (this->_type == DOUBLE)␍␊
␉␉␉this->_container.d += d;␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉variant & operator+=(T * obj)␍␊
␉{␍␊
␉␉if (this->_type == OBJECT)␍␊
␉␉␉(*this->_container.o) += *obj;␍␊
␉␉return *this;␍␊
␉}␍␊
␍␊
␉friend ostream & operator<<(const ostream & o, variant<T> & v);␍␊
␉friend istream & operator>>(istream & i, variant<T> & v);␍␊
␍␊
␉friend ostream & operator<<(const ostream & o, variant<> & v);␍␊
␉friend istream & operator>>(istream & i, variant<> & v);␍␊
␍␊
␉operator T*() const␍␊
␉{␍␊
␉␉return this->_container.v;␍␊
␉}␍␊
␍␊
␉operator T() const␍␊
␉{␍␊
␉␉return *this->_container.v;␍␊
␉}␍␊
␍␊
␉VAR_TYPES type() { return this->_type; }␍␊
};␍␊
␍␊
ostream & operator<<(ostream& o, variant<> & v)␍␊
{␍␊
␉o << (string)v;␍␊
␉return o;␍␊
}␍␊
␍␊
istream & operator>>(istream & i, variant<> & v)␍␊
{␍␊
␉string * x = new string();␍␊
␉i >> *x;␍␊
␉v._type = STRING;␍␊
␉v._container.s = x;␍␊
␉return i;␍␊
}␍␊
␍␊
template <class T>␍␊
ostream & operator<<(ostream& o, variant<T> & v)␍␊
{␍␊
␉o << (string)v;␍␊
␉return o;␍␊
}␍␊
␍␊
template <class T>␍␊
istream & operator>>(istream & i, variant<T> & v)␍␊
{␍␊
␉string * x = new string();␍␊
␉i >> *x;␍␊
␉v._type = STRING;␍␊
␉v._container.s = x;␍␊
␉return i;␍␊
}␍␊
␍␊
#endif

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