2014-09-01 11:08:49 -07:00
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#ifndef EFL_EINA_JS_GET_VALUE_FROM_C_HH
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#define EFL_EINA_JS_GET_VALUE_FROM_C_HH
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#include <eina_js_compatibility.hh>
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#include <type_traits>
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#include <cstdlib>
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#include <typeinfo>
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#include <memory>
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namespace efl { namespace eina { namespace js {
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template <typename T> struct print_tag {};
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(T v, v8::Isolate* isolate, const char*
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, typename std::enable_if<std::is_integral<typename std::remove_reference<T>::type>::value && !std::is_same<T, Eina_Bool>::value>::type* = 0)
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{
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return eina::js::compatibility_new<v8::Integer>(isolate, v);
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}
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(T v, v8::Isolate* isolate, const char*
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, typename std::enable_if<std::is_enum<typename std::remove_reference<T>::type>::value>::type* = 0)
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{
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return eina::js::compatibility_new<v8::Integer>(isolate, v);
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}
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(T v, v8::Isolate* isolate, const char*
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, typename std::enable_if<std::is_same<typename std::remove_reference<T>::type, Eina_Bool>::value>::type* = 0)
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{
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return eina::js::compatibility_new<v8::Boolean>(isolate, v);
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}
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template <typename T>
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inline v8::Local<T>
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get_value_from_c(v8::Local<T> v, v8::Isolate*, const char*)
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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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inline v8::Local<v8::Value>
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get_value_from_c(T v, v8::Isolate* isolate, const char*
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, typename std::enable_if<std::is_floating_point<typename std::remove_reference<T>::type>::value>::type* = 0)
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{
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return eina::js::compatibility_new<v8::Number>(isolate, v);
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}
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inline v8::Local<v8::Value>
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get_value_from_c(const char* v, v8::Isolate* isolate, const char*)
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{
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if (!v)
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return v8::Null(isolate);
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return eina::js::compatibility_new<v8::String>(isolate, v);
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}
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inline v8::Local<v8::Value>
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get_value_from_c(char* v, v8::Isolate* isolate, const char* class_name)
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{
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return js::get_value_from_c(const_cast<const char*>(v), isolate, class_name);
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}
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inline v8::Local<v8::Value>
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get_value_from_c(void*, v8::Isolate*, const char*)
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{
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// TODO: create Extern?
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std::cerr << "aborting because we don't know the type void*" << std::endl;
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std::abort();
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}
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inline v8::Local<v8::Value>
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get_value_from_c(const void*, v8::Isolate*, const char*)
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{
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// TODO: create Extern?
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std::cerr << "aborting because we don't know the type void*" << std::endl;
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std::abort();
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}
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// For function pointer types
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(T, v8::Isolate*, const char*
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, typename std::enable_if
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<std::is_pointer<typename std::remove_reference<T>::type>::value
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&& std::is_function<typename std::remove_pointer<typename std::remove_reference<T>::type>::type>::value
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>::type* = 0)
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{
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// TODO: create Extern?
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std::cerr << "aborting because we don't know the type " << typeid(print_tag<T>).name() << std::endl;
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std::abort();
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}
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// For all non-pointer types that are not handled
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(T, v8::Isolate*, const char*
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, typename std::enable_if
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<!std::is_pointer<typename std::remove_reference<T>::type>::value
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&& !std::is_integral<typename std::remove_reference<T>::type>::value
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&& !std::is_floating_point<typename std::remove_reference<T>::type>::value
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&& !std::is_enum<typename std::remove_reference<T>::type>::value
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&& !std::is_same<typename std::remove_reference<T>::type, Eina_Bool>::value
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&& !js::is_struct_tag<typename std::remove_reference<T>::type>::value
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&& !js::is_struct_ptr_tag<typename std::remove_reference<T>::type>::value
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&& !js::is_complex_tag<typename std::remove_reference<T>::type>::value
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>::type* = 0)
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{
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std::cerr << "aborting because we don't know the type " << typeid(print_tag<T>).name() << std::endl;
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std::abort();
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}
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// For all non-handled pointer types (which are not function pointers):
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// - we try to dereference it in the SFINAE
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// - if it matches we call get_value_from_c for the dereferenced type
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// - if it fails (probably because it is opaque) the void* or const void*
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// overload will take place (implicit conversion)
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template <typename T>
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inline auto
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get_value_from_c(T object, v8::Isolate* isolate, const char* class_name
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, typename std::enable_if<
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(std::is_pointer<typename std::remove_reference<T>::type>::value
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&& !std::is_function<typename std::remove_pointer<typename std::remove_reference<T>::type>::type>::value
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)
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&& !(std::is_same<typename std::remove_reference<T>::type, char*>::value ||
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std::is_same<typename std::remove_reference<T>::type, const char*>::value ||
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std::is_same<typename std::remove_reference<T>::type, void*>::value ||
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std::is_same<typename std::remove_reference<T>::type, const void*>::value ||
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std::is_same<typename std::remove_reference<T>::type, Eo*>::value ||
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std::is_same<typename std::remove_reference<T>::type, const Eo*>::value
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)>::type* = 0) -> decltype(get_value_from_c(*object, isolate, class_name))
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{
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std::cerr << "dereferencing " << typeid(print_tag<T>).name() << std::endl;
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return get_value_from_c(*object, isolate, class_name);
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}
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inline v8::Local<v8::Value>
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get_value_from_c(Eo* v, v8::Isolate* isolate, const char* class_name)
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{
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auto ctor = ::efl::eina::js::get_class_constructor(class_name);
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return new_v8_external_instance(ctor, v, isolate);
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}
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inline v8::Local<v8::Value>
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get_value_from_c(const Eo* v, v8::Isolate* isolate, const char* class_name)
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{
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// TODO: implement const objects?
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auto ctor = ::efl::eina::js::get_class_constructor(class_name);
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return new_v8_external_instance(ctor, const_cast<Eo*>(v), isolate);
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}
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(struct_ptr_tag<T> v, v8::Isolate* isolate, const char* class_name)
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{
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// TODO: implement const structs?
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auto ctor = ::efl::eina::js::get_class_constructor(class_name);
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return new_v8_external_instance(ctor, const_cast<typename std::remove_const<T>::type>(v.value), isolate);
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}
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template <typename T>
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inline v8::Local<v8::Value>
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get_value_from_c(struct_tag<T> v, v8::Isolate* isolate, const char* class_name)
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{
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return get_value_from_c(struct_ptr_tag<T*>{new T(v.value)}, isolate, class_name);
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<Eina_Accessor *, T, K> v, v8::Isolate* isolate, const char*)
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{
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using wrapped_type = typename container_wrapper<T>::type;
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auto a = new ::efl::eina::accessor<wrapped_type>{v.value};
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return export_accessor<T>(*a , isolate, K::class_name());
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<const Eina_Accessor *, T, K> v, v8::Isolate* isolate, const char* class_name)
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{
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// TODO implement const accessor?
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return get_value_from_c(efl::eina::js::complex_tag<Eina_Accessor*, T, K>{const_cast<Eina_Accessor*>(v.value)}, isolate, class_name);
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<Eina_Array *, T, K> v, v8::Isolate* isolate, const char*)
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{
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// TODO: use unique_ptr for eina_array to avoid leak ?
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auto o = new ::efl::eina::js::range_eina_array<T, K>(v.value);
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auto ctor = get_array_instance_template();
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return new_v8_external_instance(ctor, o, isolate);
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<const Eina_Array *, T, K> v, v8::Isolate* isolate, const char* class_name)
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{
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// TODO: implement const array?
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return get_value_from_c(efl::eina::js::complex_tag<Eina_Array *, T, K>{const_cast<Eina_Array*>(v.value)}, isolate, class_name);
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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2016-03-16 12:08:45 -07:00
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get_value_from_c(efl::eina::js::complex_tag<Eina_Iterator *, T, K> v, v8::Isolate* isolate, const char*)
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2014-09-01 11:08:49 -07:00
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{
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2016-03-16 12:08:45 -07:00
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bool own = false; // TODO: handle ownership
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auto ptr = v.value;
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auto obj = export_iterator<T>(ptr , isolate, K::class_name());
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if (own && ptr)
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efl::eina::js::make_weak(isolate, obj, [ptr]{ ::eina_iterator_free(ptr); });
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return obj;
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2014-09-01 11:08:49 -07:00
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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2016-03-16 12:08:45 -07:00
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get_value_from_c(efl::eina::js::complex_tag<const Eina_Iterator *, T, K> v, v8::Isolate* isolate, const char* class_name)
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2014-09-01 11:08:49 -07:00
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{
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2016-03-16 12:08:45 -07:00
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// TODO: implement const iterators?
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return get_value_from_c(efl::eina::js::complex_tag<Eina_Iterator *, T, K>{const_cast<Eina_Iterator*>(v.value)}, isolate, class_name);
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2014-09-01 11:08:49 -07:00
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}
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2016-03-14 09:14:37 -07:00
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template <typename T, typename KT, typename U, typename KU>
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2014-09-01 11:08:49 -07:00
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inline v8::Local<v8::Value>
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2016-03-14 09:14:37 -07:00
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get_value_from_c(efl::eina::js::complex_tag<Eina_Hash *, T, KT, U, KU>, v8::Isolate*, const char*)
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2014-09-01 11:08:49 -07:00
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{
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std::cerr << "get_value_from_c for Eina_Hash not implemented. Aborting..." << std::endl;
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std::abort();
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}
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2016-03-14 09:14:37 -07:00
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template <typename T, typename KT, typename U, typename KU>
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2014-09-01 11:08:49 -07:00
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inline v8::Local<v8::Value>
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2016-03-14 09:14:37 -07:00
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get_value_from_c(efl::eina::js::complex_tag<const Eina_Hash *, T, KT, U, KU>, v8::Isolate*, const char*)
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2014-09-01 11:08:49 -07:00
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{
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std::cerr << "get_value_from_c for Eina_Hash not implemented. Aborting..." << std::endl;
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std::abort();
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<Eina_List *, T, K> v, v8::Isolate* isolate, const char*)
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{
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// TODO: ensure eina_list ownership ???
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auto o = new ::efl::eina::js::range_eina_list<T, K>(v.value);
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auto ctor = get_list_instance_template();
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return new_v8_external_instance(ctor, o, isolate);
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}
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template <typename T, typename K>
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inline v8::Local<v8::Value>
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get_value_from_c(efl::eina::js::complex_tag<const Eina_List *, T, K> v, v8::Isolate* isolate, const char* class_name)
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{
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// TODO: implement const list?
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return get_value_from_c(efl::eina::js::complex_tag<Eina_List *, T, K>{const_cast<Eina_List*>(v.value)}, isolate, class_name);
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}
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} } }
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#endif
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