forked from enlightenment/efl
485 lines
11 KiB
C++
485 lines
11 KiB
C++
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#ifndef EFL_EOLIAN_INTEROP_HH
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#define EFL_EOLIAN_INTEROP_HH
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#include <string>
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#include <tuple>
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#include <utility>
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#include <type_traits>
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#include <initializer_list>
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#include <Eina.hh>
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#include <Eo.hh>
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#include "eo_concrete.hh"
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namespace efl { namespace eolian {
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//// From C++ to C
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inline const char*
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to_c(std::string const& x)
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{
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return x.c_str();
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}
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inline const char*
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to_c(eina::optional<std::string> const& x)
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{
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if (!x)
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return nullptr;
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return x->c_str();
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}
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inline const char*
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to_c(eina::string_view const& x)
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{
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return x.data();
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}
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inline const char*
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to_c(eina::optional<eina::string_view> const& x)
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{
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if (!x)
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return nullptr;
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return x->data();
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}
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inline const char*
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to_c(efl::eina::stringshare const& x)
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{
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return x.c_str();
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}
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inline const char*
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to_c(eina::optional<efl::eina::stringshare> const& x)
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{
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if (!x)
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return nullptr;
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return x->c_str();
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}
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inline Eina_Bool
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to_c(bool x)
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{
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return x ? EINA_TRUE : EINA_FALSE;
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}
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inline Eina_Bool*
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to_c(bool* x)
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{
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static_assert(sizeof(bool) == sizeof(Eina_Bool), "");
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return reinterpret_cast<Eina_Bool*>(x);
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}
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template <typename T>
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T to_c(T const& v, typename std::enable_if<!std::is_convertible<T*, ::efl::eo::concrete*>::value>::type* = 0)
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{
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return v;
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}
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template <typename T>
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Eo* to_c(T const& v, typename std::enable_if<std::is_convertible<T*, ::efl::eo::concrete*>::value>::type* = 0)
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{
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return v._eo_ptr();
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}
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template <typename T>
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Eo* to_c(eina::optional<T> const& v, typename std::enable_if<std::is_convertible<T*, ::efl::eo::concrete*>::value>::type* = 0)
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{
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if (!v)
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return nullptr;
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return v->_eo_ptr();
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}
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template <typename T>
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Eo** to_c(T* v, typename std::enable_if<std::is_convertible<T*, ::efl::eo::concrete*>::value>::type* = 0)
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{
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static_assert(sizeof(T) == sizeof(Eo*), "");
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return static_cast<Eo**>(static_cast<void*>(v));
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}
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template <typename R, typename T>
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R to_native(T& v)
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{
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static_assert(sizeof(T) == sizeof(R), "");
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return v.native_handle();
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}
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template <typename R, typename T>
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R to_native(eina::optional<T>& v)
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{
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static_assert(sizeof(T) == sizeof(R), "");
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if (!v)
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return nullptr;
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return v->native_handle();
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}
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template <typename R, typename T>
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R to_native(T* v)
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{
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static_assert(sizeof(T) == sizeof(typename std::remove_pointer<R>::type), "");
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return static_cast<R>(static_cast<void*>(v));
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}
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//// From C to C++
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template <typename T>
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struct tag {};
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template <typename T, typename U, typename O>
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T to_cxx(U object, O o);
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// XXX
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inline void*
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to_cxx(void *x, std::tuple<std::false_type>, tag<void*>)
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{
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return x;
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}
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// XXX
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inline const void*
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to_cxx(const void *x, std::tuple<std::false_type>, tag<const void*>)
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{
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return x;
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}
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template <typename T>
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inline T
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to_cxx(Eo* x, std::tuple<std::true_type>, tag<T>)
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{
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return T(x);
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}
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template <typename T>
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inline T
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to_cxx(Eo* x, std::tuple<std::false_type>, tag<T>)
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{
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return T(::eo_ref(x));
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}
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template <typename T>
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inline eina::optional<T>
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to_cxx(Eo* x, std::tuple<std::true_type>, tag<eina::optional<T> >)
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{
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if (!x)
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return nullptr;
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return T(x);
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}
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template <typename T>
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inline eina::optional<T>
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to_cxx(Eo* x, std::tuple<std::false_type>, tag<eina::optional<T> >)
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{
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if (!x)
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return nullptr;
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return T(::eo_ref(x));
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}
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template <typename T>
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inline T
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to_cxx(Eo** x, std::tuple<std::false_type>, tag<T>)
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{
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static_assert(sizeof(Eo*) == sizeof(typename std::remove_pointer<T>::type), "");
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return static_cast<T>((static_cast<void*>(x)));
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}
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#ifdef _EVAS_H
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template <typename T>
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Evas_Object_Textblock_Node_Format *
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to_cxx(Evas_Object_Textblock_Node_Format* x, std::tuple<std::false_type>, tag<T>)
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{
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return x; // XXX
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}
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#endif
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inline bool
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to_cxx(Eina_Bool x, std::tuple<std::false_type>, tag<bool>)
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{
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return !!x;
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}
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inline std::string
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to_cxx(const char* x, std::tuple<std::false_type>, tag<std::string>)
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{
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return std::string(x);
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}
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inline eina::optional<std::string>
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to_cxx(const char* x, std::tuple<std::false_type>, tag<eina::optional<std::string> >)
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{
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if (!x)
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return nullptr;
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return std::string(x);
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}
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inline eina::string_view
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to_cxx(const char* x, std::tuple<std::false_type>, tag<eina::string_view>)
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{
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return eina::string_view(x);
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}
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inline eina::optional<eina::string_view>
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to_cxx(const char* x, std::tuple<std::false_type>, tag<eina::optional<eina::string_view> >)
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{
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if (!x)
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return nullptr;
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return eina::string_view(x);
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}
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template <typename T, typename Enable = void>
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struct traits
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{
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typedef T type;
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};
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template <typename T>
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struct traits
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<T, typename std::enable_if<std::is_base_of<::efl::eo::concrete, T>::value>::type>
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{
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typedef Eo* type;
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};
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template <typename T>
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struct traits
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<T, typename std::enable_if<std::is_base_of<std::basic_string<char>, T>::value>::type>
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{
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typedef const char* type;
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};
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template <typename T>
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struct traits
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<T, typename std::enable_if<std::is_base_of<::efl::eina::basic_string_view<char>, T>::value>::type>
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{
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typedef const char* type;
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};
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template <typename T, typename ...Args>
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inline efl::eina::range_list<T const>
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to_cxx(const Eina_List* x, std::tuple<std::false_type, Args...>, tag< efl::eina::range_list<T> >)
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{
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return efl::eina::range_list<T const> {x};
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}
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template <typename T, typename ...Args>
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inline eina::optional<efl::eina::range_list<T const> >
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to_cxx(const Eina_List* x, std::tuple<std::false_type, Args...>, tag< eina::optional<efl::eina::range_list<T> > >)
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{
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if (!x)
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return nullptr;
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return efl::eina::range_list<T const> {x};
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}
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template <typename T, typename ...Args>
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inline efl::eina::range_list<T>
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to_cxx(Eina_List* x, std::tuple<std::false_type, Args...>, tag< efl::eina::range_list<T> >)
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{
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return efl::eina::range_list<T>{x};
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}
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template <typename T, typename ...Args>
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inline eina::optional<efl::eina::range_list<T> >
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to_cxx(Eina_List* x, std::tuple<std::false_type, Args...>, tag< eina::optional<efl::eina::range_list<T> > >)
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{
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if (!x)
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return nullptr;
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return efl::eina::range_list<T>{x};
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}
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template <typename T, typename ...Args>
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inline efl::eina::list<T>
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to_cxx(Eina_List* x, std::tuple<std::true_type, Args...>, tag< efl::eina::list<T> >)
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{
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return efl::eina::list<T> {x};
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}
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template <typename T, typename ...Args>
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inline eina::optional<efl::eina::list<T> >
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to_cxx(Eina_List* x, std::tuple<std::true_type, Args...>, tag< eina::optional<efl::eina::list<T> > >)
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{
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if (!x)
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return nullptr;
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return efl::eina::list<T> {x};
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}
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inline eina::stringshare
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to_cxx(Eina_Stringshare const* x, const std::false_type, tag<eina::stringshare>)
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{
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return ::eina_stringshare_ref(x);
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}
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inline eina::optional<eina::stringshare>
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to_cxx(Eina_Stringshare const* x, const std::false_type, tag<eina::optional<eina::stringshare> >)
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{
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if (!x)
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return nullptr;
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return eina::stringshare(::eina_stringshare_ref(x));
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}
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template <typename T, typename ...Args>
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inline efl::eina::accessor<T>
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to_cxx(Eina_Accessor* x, std::tuple<std::false_type, Args...>, tag< efl::eina::accessor<T> >)
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{
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return efl::eina::accessor<T>(x);
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}
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template <typename T, typename ...Args>
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inline eina::optional<efl::eina::accessor<T> >
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to_cxx(Eina_Accessor* x, std::tuple<std::false_type, Args...>, tag< eina::optional<efl::eina::accessor<T> > >)
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{
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if (!x)
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return nullptr;
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return efl::eina::accessor<T>(x);
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}
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template <typename T, typename ...Args>
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inline efl::eina::iterator<T>
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to_cxx(Eina_Iterator* x, std::tuple<std::false_type, Args...>, tag< efl::eina::iterator<T> >)
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{
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return efl::eina::iterator<T>(x);
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}
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template <typename T, typename ...Args>
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inline eina::optional<efl::eina::iterator<T> >
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to_cxx(Eina_Iterator* x, std::tuple<std::false_type, Args...>, tag< eina::optional<efl::eina::iterator<T> > >)
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{
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if (!x)
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return nullptr;
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return efl::eina::iterator<T>(x);
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}
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template <typename T, typename ...Args>
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T
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to_cxx(Eo const* x, std::tuple<std::false_type, Args...>, tag< T >
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, typename std::enable_if<std::is_base_of<::efl::eo::concrete, T>::value>* = 0)
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{
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// Workaround for erroneous constness
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return T{ ::eo_ref(const_cast<Eo*>(x))};
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}
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template <typename T, typename ...Args>
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eina::optional<T>
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to_cxx(Eo const* x, std::tuple<std::false_type, Args...>, tag< eina::optional<T> >
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, typename std::enable_if<std::is_base_of<::efl::eo::concrete, T>::value>* = 0)
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{
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// Workaround for erroneous constness
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if (!x)
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return nullptr;
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return T{ ::eo_ref(const_cast<Eo*>(x))};
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}
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template <typename T, typename ...Args>
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T
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to_cxx(Eo const* x, std::tuple<std::true_type, Args...>, tag< T >
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, typename std::enable_if<std::is_base_of<::efl::eo::concrete, T>::value>* = 0)
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{
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// Workaround for erroneous constness
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return T{const_cast<Eo*>(x)};
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}
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template <typename T, typename ...Args>
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eina::optional<T>
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to_cxx(Eo const* x, std::tuple<std::true_type, Args...>, tag< eina::optional<T> >
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, typename std::enable_if<std::is_base_of<::efl::eo::concrete, T>::value>* = 0)
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{
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// Workaround for erroneous constness
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if (!x)
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return nullptr;
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return T{const_cast<Eo*>(x)};
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}
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template <typename T, typename U, typename O>
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T to_cxx(U object, O o)
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{
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return to_cxx(object, o, tag<T>());
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}
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//// Callbacks
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template <typename F, typename R, typename V, typename... Args>
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R funcall(V* data, Args... args)
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{
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F const* f = static_cast<F const*>(data);
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return (*f)(args...);
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}
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template <typename T>
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struct callback_result_type;
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template <typename R, typename... Args>
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struct callback_result_type<R(*)(Args...)>
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{
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typedef R type;
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};
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template <typename R>
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struct callback_args_type;
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template <typename R, typename... Args>
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struct callback_args_type<R(*)(Args...)>
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{
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typedef std::tuple<Args...> type;
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};
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template <typename C, typename F, typename R, typename V, typename... Args>
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C get_callback_impl(tag<std::tuple<V*, Args...> >)
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{
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static_assert(std::is_same<void, typename std::remove_cv<V>::type>::value,
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"First argument of callback should be void* or const void*");
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return static_cast<C>(&eolian::funcall<F, R, V, Args...>);
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}
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template <typename C, typename F>
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C get_callback()
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{
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return get_callback_impl<C, F, typename callback_result_type<C>::type>
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(tag<typename callback_args_type<C>::type>());
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}
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template <typename F>
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Eina_Bool free_callback_callback(void* data, ::Eo_Event const*)
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{
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delete static_cast<F*>(data);
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return EO_CALLBACK_CONTINUE;
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}
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template <typename... Fs>
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inline
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void register_ev_del_free_callback(Eo* eoptr, Fs&&... fs)
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{
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std::initializer_list<int const> const v {(fs.register_ev_del_free_callback(eoptr), 0)...};
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(void) v; (void) eoptr;
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}
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template <typename F>
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inline
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std::vector<F>& get_static_callback_vector()
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{
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static std::vector<F> vec;
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return vec;
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}
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template <typename F>
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inline
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F* alloc_static_callback(F&& f)
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{
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get_static_callback_vector<F>().push_back(std::forward<F>(f));
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return &(get_static_callback_vector<F>().back());
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}
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/// Miscellaneous
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template <typename... Fs>
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inline
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void call_ctors(Eo* _obj_eo_self, Fs&&... fs)
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{
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std::initializer_list<int const> const v {(fs(_obj_eo_self), 0)...};
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(void) v;
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(void) _obj_eo_self;
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}
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} } // namespace efl { namespace eolian {
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#endif // EFL_EOLIAN_INTEROP_HH
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