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/**
* Function.h
*
* The Function class is an extension of the Callable 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 Function : public Callable
{
public:
/**
* Constructor
* @param name Function name
* @param function The native C function
*/
Function(const char *name, const native_callback_0 &function, const Arguments &arguments = {}) : Callable(name, arguments), _type(0) { _function.f0 = function; }
Function(const char *name, const native_callback_1 &function, const Arguments &arguments = {}) : Callable(name, arguments), _type(1) { _function.f1 = function; }
Function(const char *name, const native_callback_2 &function, const Arguments &arguments = {}) : Callable(name, arguments), _type(2) { _function.f2 = function; }
Function(const char *name, const native_callback_3 &function, const Arguments &arguments = {}) : Callable(name, arguments), _type(3) { _function.f3 = function; }
/**
* Copy constructor
* @param that
*/
Function(const Function &that) : Callable(that), _function(that._function), _type(that._type) {}
/**
* Move constructor
* @param that
*/
Function(Function &&that) : Callable(std::move(that)), _function(that._function), _type(that._type) {}
/**
* Destructor
*/
virtual ~Function() {}
/**
* Method that gets called every time the function is executed
* @param params The parameters that were passed
* @return Variable Return value
*/
virtual Value invoke(Parameters ¶ms) override
{
switch (_type) {
case 0: _function.f0(); return Value();
case 1: _function.f1(params); return Value();
case 2: return _function.f2();
case 3: return _function.f3(params);
default: return Value();
}
}
/**
* Fill a function entry
* @param prefix Active namespace prefix
* @param entry Entry to be filled
*/
void initialize(const std::string &prefix, zend_function_entry *entry)
{
// if there is a namespace prefix, we should adjust the name
if (prefix.size()) _ptr = HiddenPointer<Callable>(this, prefix+"\\"+(const char *)_ptr);
// call base initialize
Callable::initialize(entry);
}
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;
} _function;
/**
* The callback that is set
* @var integer
*/
int _type;
};
/**
* End of namespace
*/
}
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