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/**
* Arithmethic.h
*
* Helper class that takes care of arithmetic operations on PHP variables
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2013 Copernica BV
*/
/**
* Set up namespace
*/
namespace Php {
/**
* Class definition
*/
template < template<typename T> class F>
class Arithmetic
{
public:
/**
* Constructor
* @param value The original object
*/
Arithmetic(Value *value) : _value(value) {}
/**
* Destructor
*/
virtual ~Arithmetic() {}
/**
* Apply a number, and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(const Value &value)
{
// is this a type a floating point type?
if (value.isFloat()) return apply(value.floatValue());
// we are going to treat it as a numeric (non floating) type
return apply(value.numericValue());
}
/**
* Apply a number, and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(int16_t value)
{
// check if the current object is a floating point number
if (_value->isFloat()) return Value(F<double>()(_value->floatValue(), value));
// apply to natural numbers
return Value(F<int64_t>()(_value->numericValue(), value));
}
/**
* Apply a number, and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(int32_t value)
{
// check if the current object is a floating point number
if (_value->isFloat()) return Value(F<double>()(_value->floatValue(), value));
// apply to natural numbers
return Value(F<int64_t>()(_value->numericValue(), value));
}
/**
* Apply a number, and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(int64_t value)
{
// check if the current object is a floating point number
if (_value->isFloat()) return Value(F<double>()(_value->floatValue(), value));
// apply to natural numbers
return Value(F<int64_t>()(_value->numericValue(), value));
}
/**
* Apply a boolean (treat is as 0 or 1), and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(bool value)
{
// check if the current object is a floating point number
if (_value->isFloat()) return Value(F<double>()(_value->floatValue(), value?1:0));
// apply to natural numbers
return Value(F<int64_t>()(_value->numericValue(), value?1:0));
}
/**
* Apply a character (value between '0' and '9'), and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(char value)
{
// convert to an integer
int v = value < '0' || value > '9' ? 0 : value - '0';
// check if the current object is a floating point number
if (_value->isFloat()) return Value(F<double>()(_value->floatValue(), v));
// apply to natural numbers
return Value(F<int64_t>()(_value->numericValue(), v));
}
/**
* Apply a string (representing a number), and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(const std::string &value)
{
// convert string to integer
return apply(atoi(value.c_str()));
}
/**
* Apply a string (representing a number), and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(const char *value)
{
// convert string to integer
return apply(atoi(value));
}
/**
* Apply a string (representing a number), and return a new value object after running the arithmetic function
* @param value
* @return Value
*/
Value apply(double value)
{
return Value(F<double>()(_value->floatValue(), value));
}
/**
* Assign a different value object, applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(const Value &value)
{
// is this a type a floating point type?
if (value.isFloat()) return assign(value.floatValue());
// we are going to treat it as a numeric (non floating) type
return assign(value.numericValue());
}
/**
* Assign a 16bit number, applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(int16_t value)
{
// is the current object a floating point type?
if (_value->isFloat()) return _value->operator=(F<double>()(_value->floatValue(), value));
// do a numeric operation
return _value->operator=(F<int64_t>()(_value->numericValue(), value));
}
/**
* Assign 32bit integer, applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(int32_t value)
{
// is the current object a floating point type?
if (_value->isFloat()) return _value->operator=(F<double>()(_value->floatValue(), value));
// do a numeric operation
return _value->operator=(F<int64_t>()(_value->numericValue(), value));
}
/**
* Assign 64bit integer, applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(int64_t value)
{
// is the current object a floating point type?
if (_value->isFloat()) return _value->operator=(F<double>()(_value->floatValue(), value));
// do a numeric operation
return _value->operator=(F<int64_t>()(_value->numericValue(), value));
}
/**
* Assign 64bit integer - which is treated as 1 or 0 - applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(bool value)
{
// is the current object a floating point type?
if (_value->isFloat()) return _value->operator=(F<double>()(_value->floatValue(), value?1:0));
// do a numeric operation
return _value->operator=(F<int64_t>()(_value->numericValue(), value?1:0));
}
/**
* Assign a single character - which is treated as an int, and applying the arithmetic function
* @param value
* @return Value
*/
Value &assign(char value)
{
// convert to an integer
int v = value < '0' || value > '9' ? 0 : value - '0';
// is the current object a floating point type?
if (_value->isFloat()) return _value->operator=(F<double>()(_value->floatValue(), v));
// do a numeric operation
return _value->operator=(F<int64_t>()(_value->numericValue(), v));
}
/**
* Assign a a string - treating it as an integer, and applying the arithmetic function
* @param value
* @return Value
*/
Value &assign(const std::string &value)
{
// assign integer
return assign(atoi(value.c_str()));
}
/**
* Assign a string - treating it as an integer, and applying the arithmetic function
* @param value
* @return Value
*/
Value &assign(const char *value)
{
// assign integer
return assign(atoi(value));
}
/**
* Assign a double, applying the arithmetic operation
* @param value
* @return Value
*/
Value &assign(double value)
{
// do float operation
return _value->operator=(F<double>()(_value->floatValue(), value));
}
private:
/**
* Pointer to the original value object
* @var Value
*/
Value *_value;
};
/**
* End of namespace
*/
}
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