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// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#ifndef INCLUDED_GRAS_DETAIL_BLOCK_HPP
#define INCLUDED_GRAS_DETAIL_BLOCK_HPP
#include <typeinfo>
namespace gras
{
struct GRAS_API FunctionRegistry
{
FunctionRegistry(void);
virtual ~FunctionRegistry(void);
virtual PMCC call(const std::vector<PMCC> &args) = 0;
};
template <typename ClassType, typename ReturnType, typename Arg0, typename Arg1>
class FunctionRegistryImpl : public FunctionRegistry
{
public:
FunctionRegistryImpl(
ClassType *obj,
ReturnType(ClassType::*fcn0)(void),
ReturnType(ClassType::*fcn1)(const Arg0 &) = NULL,
ReturnType(ClassType::*fcn2)(const Arg0 &, const Arg1 &) = NULL
):
_obj(obj),
_fcn0(fcn0),
_fcn1(fcn1),
_fcn2(fcn2)
{}
virtual ~FunctionRegistryImpl(void){}
PMCC call(const std::vector<PMCC> &args)
{
if (_fcn0) return PMC_M((_obj->*_fcn0)());
if (_fcn1) return PMC_M((_obj->*_fcn1)(args[0].safe_as<Arg0>()));
if (_fcn2) return PMC_M((_obj->*_fcn2)(args[0].safe_as<Arg0>(), args[1].safe_as<Arg1>()));
return PMCC();//should not get here
}
private:
ClassType *_obj;
ReturnType(ClassType::*_fcn0)(void);
ReturnType(ClassType::*_fcn1)(const Arg0 &);
ReturnType(ClassType::*_fcn2)(const Arg0 &, const Arg1 &);
};
template <typename ClassType, typename ReturnType> void Block::register_call(const std::string &key, ReturnType(ClassType::*fcn)(void))
{
ClassType *obj = dynamic_cast<ClassType *>(this);
void *fr = new FunctionRegistryImpl<ClassType, ReturnType, int, int>(obj, fcn);
_register_function(key, fr);
}
template <typename ClassType, typename ReturnType, typename Arg0> void Block::register_call(const std::string &key, ReturnType(ClassType::*fcn)(const Arg0 &))
{
ClassType *obj = dynamic_cast<ClassType *>(this);
void *fr = new FunctionRegistryImpl<ClassType, ReturnType, Arg0, int>(obj, NULL, fcn);
_register_function(key, fr);
}
template <typename ClassType, typename ReturnType, typename Arg0, typename Arg1> void Block::register_call(const std::string &key, ReturnType(ClassType::*fcn)(const Arg0 &, const Arg1 &))
{
ClassType *obj = dynamic_cast<ClassType *>(this);
void *fr = new FunctionRegistryImpl<ClassType, ReturnType, Arg0, Arg1>(obj, NULL, NULL, fcn);
_register_function(key, fr);
}
template <typename ReturnType> ReturnType Block::call(const std::string &key)
{
std::vector<PMCC> args;
PMCC r = _handle_function_access(key, args);
return r.safe_as<ReturnType>();
}
template <typename ReturnType, typename Arg0> ReturnType Block::call(const std::string &key, const Arg0 &a0)
{
std::vector<PMCC> args;
args.push_back(PMC_M(a0));
PMCC r = _handle_function_access(key, args);
return r.safe_as<ReturnType>();
}
template <typename ReturnType, typename Arg0, typename Arg1> ReturnType Block::call(const std::string &key, const Arg0 &a0, const Arg1 &a1)
{
std::vector<PMCC> args;
args.push_back(PMC_M(a0));
args.push_back(PMC_M(a1));
PMCC r = _handle_function_access(key, args);
return r.safe_as<ReturnType>();
}
struct GRAS_API PropertyRegistry
{
PropertyRegistry(void);
virtual ~PropertyRegistry(void);
virtual void set(const PMCC &) = 0;
virtual PMCC get(void) = 0;
virtual const std::type_info &type(void) const = 0;
};
template <typename ClassType, typename ValueType>
class PropertyRegistryImpl : public PropertyRegistry
{
public:
PropertyRegistryImpl(
ClassType *my_class,
ValueType(ClassType::*getter)(void),
void(ClassType::*setter)(const ValueType &)
):
_my_class(my_class),
_getter(getter),
_setter(setter)
{}
virtual ~PropertyRegistryImpl(void){}
void set(const PMCC &value)
{
(_my_class->*_setter)(value.safe_as<ValueType>());
}
PMCC get(void)
{
return PMC_M((_my_class->*_getter)());
}
const std::type_info &type(void) const
{
return typeid(ValueType);
}
private:
ClassType *_my_class;
ValueType(ClassType::*_getter)(void);
void(ClassType::*_setter)(const ValueType &);
};
/*!
* The following functions implement the templated methods in Block
*/
template <typename ClassType, typename ValueType>
inline void Block::register_getter(
const std::string &key,
ValueType(ClassType::*get)(void)
)
{
ClassType *obj = dynamic_cast<ClassType *>(this);
void *pr = new PropertyRegistryImpl<ClassType, ValueType>(obj, get, NULL);
this->_register_getter(key, pr);
}
template <typename ClassType, typename ValueType>
inline void Block::register_setter(
const std::string &key,
void(ClassType::*set)(const ValueType &)
)
{
ClassType *obj = dynamic_cast<ClassType *>(this);
void *pr = new PropertyRegistryImpl<ClassType, ValueType>(obj, NULL, set);
this->_register_setter(key, pr);
}
template <typename ValueType>
inline void Block::set(const std::string &key, const ValueType &value)
{
this->_set_property(key, PMC_M(value));
}
template <typename ValueType>
inline void Block::get(const std::string &key, ValueType &value)
{
value = this->_get_property(key).safe_as<ValueType>();
}
template <typename ValueType>
inline ValueType Block::get(const std::string &key)
{
return this->_get_property(key).safe_as<ValueType>();
}
template <typename ValueType>
inline void Block::post_output_msg(const size_t i, const ValueType &value)
{
this->_post_output_msg(i, PMC_M(value));
}
template <>
inline void Block::post_output_msg(const size_t i, const PMCC &value)
{
this->_post_output_msg(i, value);
}
template <>
inline void Block::post_output_msg(const size_t i, const PMC &value)
{
this->_post_output_msg(i, value);
}
template <typename ValueType>
inline void Block::post_input_msg(const size_t i, const ValueType &value)
{
this->_post_input_msg(i, PMC_M(value));
}
template <>
inline void Block::post_input_msg(const size_t i, const PMCC &value)
{
this->_post_input_msg(i, value);
}
template <>
inline void Block::post_input_msg(const size_t i, const PMC &value)
{
this->_post_input_msg(i, value);
}
} //namespace gras
#endif /*INCLUDED_GRAS_DETAIL_BLOCK_HPP*/
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