7 #include <nlohmann/detail/meta/detected.hpp>
8 #include <nlohmann/detail/meta/type_traits.hpp>
15 using null_function_t = decltype(std::declval<T&>().
null());
18 using boolean_function_t =
19 decltype(std::declval<T&>().
boolean(std::declval<bool>()));
21 template <
typename T,
typename Integer>
22 using number_integer_function_t =
23 decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
25 template <
typename T,
typename Un
signed>
26 using number_unsigned_function_t =
27 decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
29 template <
typename T,
typename Float,
typename String>
30 using number_float_function_t = decltype(std::declval<T&>().number_float(
31 std::declval<Float>(), std::declval<const String&>()));
33 template <
typename T,
typename String>
34 using string_function_t =
35 decltype(std::declval<T&>().
string(std::declval<String&>()));
38 using start_object_function_t =
39 decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
41 template <
typename T,
typename String>
42 using key_function_t =
43 decltype(std::declval<T&>().key(std::declval<String&>()));
46 using end_object_function_t = decltype(std::declval<T&>().end_object());
49 using start_array_function_t =
50 decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
53 using end_array_function_t = decltype(std::declval<T&>().end_array());
55 template <
typename T,
typename Exception>
56 using parse_error_function_t = decltype(std::declval<T&>().parse_error(
57 std::declval<std::size_t>(), std::declval<const std::string&>(),
58 std::declval<const Exception&>()));
60 template <
typename SAX,
typename BasicJsonType>
65 "BasicJsonType must be of type basic_json<...>");
67 using number_integer_t =
typename BasicJsonType::number_integer_t;
68 using number_unsigned_t =
typename BasicJsonType::number_unsigned_t;
69 using number_float_t =
typename BasicJsonType::number_float_t;
70 using string_t =
typename BasicJsonType::string_t;
71 using exception_t =
typename BasicJsonType::exception;
74 static constexpr
bool value =
75 is_detected_exact<bool, null_function_t, SAX>::value &&
76 is_detected_exact<bool, boolean_function_t, SAX>::value &&
77 is_detected_exact<bool, number_integer_function_t, SAX,
78 number_integer_t>::value &&
79 is_detected_exact<bool, number_unsigned_function_t, SAX,
80 number_unsigned_t>::value &&
81 is_detected_exact<bool, number_float_function_t, SAX, number_float_t,
83 is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
84 is_detected_exact<bool, start_object_function_t, SAX>::value &&
85 is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
86 is_detected_exact<bool, end_object_function_t, SAX>::value &&
87 is_detected_exact<bool, start_array_function_t, SAX>::value &&
88 is_detected_exact<bool, end_array_function_t, SAX>::value &&
89 is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
92 template <
typename SAX,
typename BasicJsonType>
97 "BasicJsonType must be of type basic_json<...>");
99 using number_integer_t =
typename BasicJsonType::number_integer_t;
100 using number_unsigned_t =
typename BasicJsonType::number_unsigned_t;
101 using number_float_t =
typename BasicJsonType::number_float_t;
102 using string_t =
typename BasicJsonType::string_t;
103 using exception_t =
typename BasicJsonType::exception;
106 static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
107 "Missing/invalid function: bool null()");
108 static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
109 "Missing/invalid function: bool boolean(bool)");
110 static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
111 "Missing/invalid function: bool boolean(bool)");
113 is_detected_exact<
bool, number_integer_function_t, SAX,
114 number_integer_t>::value,
115 "Missing/invalid function: bool number_integer(number_integer_t)");
117 is_detected_exact<
bool, number_unsigned_function_t, SAX,
118 number_unsigned_t>::value,
119 "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
120 static_assert(is_detected_exact<
bool, number_float_function_t, SAX,
121 number_float_t, string_t>::value,
122 "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
124 is_detected_exact<bool, string_function_t, SAX, string_t>::value,
125 "Missing/invalid function: bool string(string_t&)");
126 static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
127 "Missing/invalid function: bool start_object(std::size_t)");
128 static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
129 "Missing/invalid function: bool key(string_t&)");
130 static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
131 "Missing/invalid function: bool end_object()");
132 static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
133 "Missing/invalid function: bool start_array(std::size_t)");
134 static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
135 "Missing/invalid function: bool end_array()");
137 is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
138 "Missing/invalid function: bool parse_error(std::size_t, const "
139 "std::string&, const exception&)");