1 /********************************************************************* 2 * NAN - Native Abstractions for Node.js 3 * 4 * Copyright (c) 2018 NAN contributors 5 * 6 * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md> 7 ********************************************************************/ 8 9 #ifndef NAN_CONVERTERS_H_ 10 #define NAN_CONVERTERS_H_ 11 12 namespace imp { 13 template<typename T> struct ToFactoryBase { 14 typedef MaybeLocal<T> return_t; 15 }; 16 template<typename T> struct ValueFactoryBase { typedef Maybe<T> return_t; }; 17 18 template<typename T> struct ToFactory; 19 20 template<> 21 struct ToFactory<v8::Function> : ToFactoryBase<v8::Function> { 22 static inline return_t convert(v8::Local<v8::Value> val) { 23 if (val.IsEmpty() || !val->IsFunction()) return MaybeLocal<v8::Function>(); 24 return MaybeLocal<v8::Function>(val.As<v8::Function>()); 25 } 26 }; 27 28 #define X(TYPE) \ 29 template<> \ 30 struct ToFactory<v8::TYPE> : ToFactoryBase<v8::TYPE> { \ 31 static inline return_t convert(v8::Local<v8::Value> val); \ 32 }; 33 34 X(Boolean) 35 X(Number) 36 X(String) 37 X(Object) 38 X(Integer) 39 X(Uint32) 40 X(Int32) 41 42 #undef X 43 44 #define X(TYPE) \ 45 template<> \ 46 struct ToFactory<TYPE> : ValueFactoryBase<TYPE> { \ 47 static inline return_t convert(v8::Local<v8::Value> val); \ 48 }; 49 50 X(bool) 51 X(double) 52 X(int64_t) 53 X(uint32_t) 54 X(int32_t) 55 56 #undef X 57 } // end of namespace imp 58 59 template<typename T> 60 inline 61 typename imp::ToFactory<T>::return_t To(v8::Local<v8::Value> val) { 62 return imp::ToFactory<T>::convert(val); 63 } 64 65 #if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 || \ 66 (V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3)) 67 # include "nan_converters_43_inl.h" 68 #else 69 # include "nan_converters_pre_43_inl.h" 70 #endif 71 72 #endif // NAN_CONVERTERS_H_ 73