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| // BSD 3-Clause License; see https://github.com/scikit-hep/awkward-1.0/blob/main/LICENSE | ||
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| #ifndef AWKWARD_UTILS_H_ | ||
| #define AWKWARD_UTILS_H_ | ||
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| #include <iterator> | ||
| #include <complex> | ||
| #include <type_traits> | ||
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| namespace awkward { | ||
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| template <typename T> | ||
| const std::string | ||
| type_to_name() { | ||
| return typeid(T).name(); | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<bool>() { | ||
| return "bool"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<int8_t>() { | ||
| return "int8"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<int16_t>() { | ||
| return "int16"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<int32_t>() { | ||
| return "int32"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<int64_t>() { | ||
| return "int64"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<uint8_t>() { | ||
| return "uint8"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<uint16_t>() { | ||
| return "uint16"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<uint32_t>() { | ||
| return "uint32"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<uint64_t>() { | ||
| return "uint64"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<float>() { | ||
| return "float32"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<double>() { | ||
| return "float64"; | ||
| } | ||
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| template <> | ||
| const std::string | ||
| type_to_name<char>() { | ||
| return "char"; | ||
| } | ||
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| template <typename, typename = void> | ||
| constexpr bool is_iterable{}; | ||
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| template <typename T> | ||
| constexpr bool is_iterable< | ||
| T, | ||
| std::void_t< decltype(std::declval<T>().begin()), | ||
| decltype(std::declval<T>().end()) | ||
| > | ||
| > = true; | ||
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| template <typename Test, template <typename...> class Ref> | ||
| struct is_specialization : std::false_type { | ||
| }; | ||
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| template <template <typename...> class Ref, typename... Args> | ||
| struct is_specialization<Ref<Args...>, Ref> : std::true_type { | ||
| }; | ||
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| template <typename T> | ||
| std::string | ||
| type_to_form(int64_t form_key_id) { | ||
| if (std::string(typeid(T).name()).find("awkward") != string::npos) { | ||
| return std::string("awkward type"); | ||
| } | ||
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| std::stringstream form_key; | ||
| form_key << "node" << (form_key_id++); | ||
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| if (std::is_arithmetic<T>::value) { | ||
| std::string parameters(type_to_name<T>() + "\","); | ||
| if (std::is_same<T, char>::value) { | ||
| parameters = std::string("uint8\", \"parameters\": { \"__array__\": \"char\" }, "); | ||
| } | ||
| return "{\"class\": \"NumpyArray\", \"primitive\": \"" | ||
| + parameters + "\"form_key\": \"" + form_key.str() + "\"}"; | ||
| } else if (is_specialization<T, std::complex>::value) { | ||
| return "{\"class\": \"NumpyArray\", \"primitive\": \"complex128\", \"form_key\": \"" | ||
| + form_key.str() + "\"}"; | ||
| } | ||
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| typedef typename T::value_type value_type; | ||
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| if (is_iterable<T>) { | ||
| std::string parameters(""); | ||
| if (std::is_same<value_type, char>::value) { | ||
| parameters = std::string(" \"parameters\": { \"__array__\": \"string\" }, "); | ||
| } | ||
| return "{\"class\": \"ListOffsetArray\", \"offsets\": \"i64\", \"content\":" | ||
| + type_to_form<value_type>(form_key_id) | ||
| + ", " + parameters + "\"form_key\": \"" + form_key.str() + "\"}"; | ||
| } | ||
| return "unsupported type"; | ||
| } | ||
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| } | ||
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| #endif // AWKWARD_UTILS_H_ |