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/**
* NativeFunction.h
*
* The NativeFunction class is an extension of the Function class that
* forwards the function call directly to a native function in C/C++
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2013 Copernica BV
*/
/**
* Set up namespace
*/
namespace Php {
/**
* Class definition
*/
class NativeFunction : public Function
{
public:
/**
* Constructor
* @param name Function name
* @param function The native C function
*/
NativeFunction(const char *name, native_callback_0 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(0) { _function.f0 = function; }
NativeFunction(const char *name, native_callback_1 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(1) { _function.f1 = function; }
NativeFunction(const char *name, native_callback_2 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(2) { _function.f2 = function; }
NativeFunction(const char *name, native_callback_3 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(3) { _function.f3 = function; }
NativeFunction(const char *name, native_callback_4 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(4) { _function.f4 = function; }
NativeFunction(const char *name, native_callback_5 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(5) { _function.f5 = function; }
NativeFunction(const char *name, native_callback_6 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(6) { _function.f6 = function; }
NativeFunction(const char *name, native_callback_7 function, const std::initializer_list<Argument> &arguments = {}) : Function(name, arguments), _type(7) { _function.f7 = function; }
/**
* Destructor
*/
virtual ~NativeFunction() {}
/**
* Method that gets called every time the function is executed
* @param environment Environment
* @param params The parameters that were passed
* @return Variable Return value
*/
virtual Value invoke(Environment &environment, Parameters ¶ms) override
{
switch (_type) {
case 0: _function.f0(); return Value();
case 1: _function.f1(params); return Value();
case 2: _function.f2(environment); return Value();
case 3: _function.f3(environment, params); return Value();
case 4: return _function.f4();
case 5: return _function.f5(params);
case 6: return _function.f6(environment);
case 7: return _function.f7(environment, params);
default: return Value();
}
}
private:
/**
* Union of supported callbacks
* One of the callbacks will be set
*/
union {
native_callback_0 f0;
native_callback_1 f1;
native_callback_2 f2;
native_callback_3 f3;
native_callback_4 f4;
native_callback_5 f5;
native_callback_6 f6;
native_callback_7 f7;
} _function;
/**
* The callback that is set
* @var integer
*/
int _type;
};
/**
* End of namespace
*/
}
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