mirror of
https://github.com/nlohmann/json.git
synced 2024-11-23 22:19:02 +08:00
♻️ add proper SFINAE for 64 bit check
This commit is contained in:
Niels Lohmann
parent
0c4e6aa2cd
commit
612f326052
@ -918,20 +918,72 @@ class lexer : public lexer_base<BasicJsonType>
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f = std::strtold(str, endptr);
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}
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template < detail::enable_if_t<sizeof(number_unsigned_t) <= 64, int> = 0>
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JSON_HEDLEY_NON_NULL(2)
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auto strtoull(const char* str, char** str_end) -> decltype(std::strtoull(str, str_end, 10))
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template<typename NumberType>
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struct is_64_bit : std::integral_constant < bool, (sizeof(NumberType) <= 8) >
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{};
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JSON_HEDLEY_NON_NULL(2)
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unsigned long long strtoull(const char* str, char** str_end, std::true_type)
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{
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return std::strtoull(str, str_end, 10);
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}
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template < detail::enable_if_t<sizeof(number_integer_t) <= 64, int> = 0>
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JSON_HEDLEY_NON_NULL(2)
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auto strtoll(const char* str, char** str_end) -> decltype(std::strtoll(str, str_end, 10))
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JSON_HEDLEY_NON_NULL(2)
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number_unsigned_t strtoull(const char* str, char** str_end, std::false_type)
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{
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number_unsigned_t val = 0;
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const char* p = str;
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while (*p >= '0' and * p <= '9')
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{
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val = (10 * val) + (*p - '0');
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p++;
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}
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if (str_end != nullptr)
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{
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*str_end = (char*)p;
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}
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return val;
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}
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JSON_HEDLEY_NON_NULL(2)
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long long strtoll(const char* str, char** str_end, std::true_type)
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{
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return std::strtoll(str, str_end, 10);
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}
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JSON_HEDLEY_NON_NULL(2)
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number_integer_t strtoll(const char* str, char** str_end, std::false_type)
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{
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number_integer_t val = 0;
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const char* p = str;
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if (*p == '-')
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{
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p++;
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}
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while (*p >= '0' and * p <= '9')
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{
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val = (10 * val) + (*p - '0');
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p++;
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}
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if (*str == '-')
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{
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val = val * -1;
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}
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if (str_end != nullptr)
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{
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*str_end = (char*)p;
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}
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return val;
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}
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/*!
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@brief scan a number literal
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@ -1256,7 +1308,7 @@ scan_number_done:
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// try to parse integers first and fall back to floats
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if (number_type == token_type::value_unsigned)
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{
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const auto x = strtoull(token_buffer.data(), &endptr);
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const auto x = strtoull(token_buffer.data(), &endptr, is_64_bit<number_unsigned_t>());
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// we checked the number format before
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assert(endptr == token_buffer.data() + token_buffer.size());
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@ -1272,7 +1324,7 @@ scan_number_done:
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}
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else if (number_type == token_type::value_integer)
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{
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const auto x = strtoll(token_buffer.data(), &endptr);
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const auto x = strtoll(token_buffer.data(), &endptr, is_64_bit<number_integer_t>());
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// we checked the number format before
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assert(endptr == token_buffer.data() + token_buffer.size());
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@ -9030,20 +9030,72 @@ class lexer : public lexer_base<BasicJsonType>
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f = std::strtold(str, endptr);
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}
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template < detail::enable_if_t<sizeof(number_unsigned_t) <= 64, int> = 0>
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JSON_HEDLEY_NON_NULL(2)
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auto strtoull(const char* str, char** str_end) -> decltype(std::strtoull(str, str_end, 10))
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template<typename NumberType>
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struct is_64_bit : std::integral_constant < bool, (sizeof(NumberType) <= 8) >
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{};
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JSON_HEDLEY_NON_NULL(2)
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unsigned long long strtoull(const char* str, char** str_end, std::true_type)
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{
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return std::strtoull(str, str_end, 10);
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}
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template < detail::enable_if_t<sizeof(number_integer_t) <= 64, int> = 0>
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JSON_HEDLEY_NON_NULL(2)
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auto strtoll(const char* str, char** str_end) -> decltype(std::strtoll(str, str_end, 10))
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JSON_HEDLEY_NON_NULL(2)
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number_unsigned_t strtoull(const char* str, char** str_end, std::false_type)
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{
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number_unsigned_t val = 0;
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const char* p = str;
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while (*p >= '0' and * p <= '9')
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{
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val = (10 * val) + (*p - '0');
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p++;
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}
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if (str_end != nullptr)
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{
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*str_end = (char*)p;
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}
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return val;
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}
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JSON_HEDLEY_NON_NULL(2)
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long long strtoll(const char* str, char** str_end, std::true_type)
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{
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return std::strtoll(str, str_end, 10);
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}
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JSON_HEDLEY_NON_NULL(2)
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number_integer_t strtoll(const char* str, char** str_end, std::false_type)
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{
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number_integer_t val = 0;
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const char* p = str;
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if (*p == '-')
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{
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p++;
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}
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while (*p >= '0' and * p <= '9')
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{
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val = (10 * val) + (*p - '0');
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p++;
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}
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if (*str == '-')
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{
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val = val * -1;
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}
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if (str_end != nullptr)
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{
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*str_end = (char*)p;
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}
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return val;
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}
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/*!
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@brief scan a number literal
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@ -9368,7 +9420,7 @@ scan_number_done:
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// try to parse integers first and fall back to floats
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if (number_type == token_type::value_unsigned)
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{
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const auto x = strtoull(token_buffer.data(), &endptr);
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const auto x = strtoull(token_buffer.data(), &endptr, is_64_bit<number_unsigned_t>());
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// we checked the number format before
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assert(endptr == token_buffer.data() + token_buffer.size());
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@ -9384,7 +9436,7 @@ scan_number_done:
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}
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else if (number_type == token_type::value_integer)
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{
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const auto x = strtoll(token_buffer.data(), &endptr);
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const auto x = strtoll(token_buffer.data(), &endptr, is_64_bit<number_integer_t>());
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// we checked the number format before
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assert(endptr == token_buffer.data() + token_buffer.size());
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@ -9800,7 +9852,7 @@ enum class parse_event_t : uint8_t
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template<typename BasicJsonType>
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using parser_callback_t =
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std::function<bool(int depth, parse_event_t event, BasicJsonType& parsed)>;
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std::function<bool(int depth, parse_event_t event, BasicJsonType& parsed)>;
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/*!
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@brief syntax analysis
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@ -9817,7 +9869,7 @@ class parser
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using lexer_t = lexer<BasicJsonType, InputAdapterType>;
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using token_type = typename lexer_t::token_type;
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public:
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public:
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/// a parser reading from an input adapter
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explicit parser(InputAdapterType&& adapter,
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const parser_callback_t<BasicJsonType> cb = nullptr,
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@ -9927,7 +9979,7 @@ public:
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return result;
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}
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private:
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private:
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template <typename SAX>
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JSON_HEDLEY_NON_NULL(2)
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bool sax_parse_internal(SAX* sax)
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@ -10246,7 +10298,7 @@ private:
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return error_msg;
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}
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private:
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private:
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/// callback function
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const parser_callback_t<BasicJsonType> callback = nullptr;
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/// the type of the last read token
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@ -10469,7 +10521,7 @@ class iter_impl
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static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
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"iter_impl only accepts (const) basic_json");
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public:
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public:
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/// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
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/// The C++ Standard has never required user-defined iterators to derive from std::iterator.
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@ -10582,7 +10634,7 @@ public:
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return *this;
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}
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private:
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private:
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/*!
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@brief set the iterator to the first value
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@pre The iterator is initialized; i.e. `m_object != nullptr`.
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@ -10650,7 +10702,7 @@ private:
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}
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}
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public:
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public:
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/*!
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@brief return a reference to the value pointed to by the iterator
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@pre The iterator is initialized; i.e. `m_object != nullptr`.
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@ -11046,7 +11098,7 @@ public:
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return operator*();
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}
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private:
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private:
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/// associated JSON instance
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pointer m_object = nullptr;
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/// the actual iterator of the associated instance
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@ -11093,7 +11145,7 @@ create @ref const_reverse_iterator).
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template<typename Base>
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class json_reverse_iterator : public std::reverse_iterator<Base>
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{
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public:
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public:
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using difference_type = std::ptrdiff_t;
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/// shortcut to the reverse iterator adapter
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using base_iterator = std::reverse_iterator<Base>;
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@ -11208,7 +11260,7 @@ class json_pointer
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NLOHMANN_BASIC_JSON_TPL_DECLARATION
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friend class basic_json;
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public:
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public:
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/*!
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@brief create JSON pointer
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@ -11506,7 +11558,7 @@ public:
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return reference_tokens.empty();
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}
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private:
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private:
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/*!
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@param[in] s reference token to be converted into an array index
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@ -12177,7 +12229,7 @@ namespace detail
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template<typename BasicJsonType>
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class json_ref
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{
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public:
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public:
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using value_type = BasicJsonType;
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json_ref(value_type&& value)
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@ -12232,7 +12284,7 @@ public:
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return static_cast<value_type const*>(value_ref);
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}
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private:
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private:
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mutable value_type owned_value = nullptr;
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value_type* value_ref = nullptr;
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const bool is_rvalue = true;
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@ -12295,7 +12347,7 @@ using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
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template<typename CharType>
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class output_vector_adapter : public output_adapter_protocol<CharType>
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{
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public:
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public:
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explicit output_vector_adapter(std::vector<CharType>& vec) noexcept
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: v(vec)
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{}
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@ -12311,7 +12363,7 @@ public:
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std::copy(s, s + length, std::back_inserter(v));
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}
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private:
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private:
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std::vector<CharType>& v;
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};
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@ -12319,7 +12371,7 @@ private:
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template<typename CharType>
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class output_stream_adapter : public output_adapter_protocol<CharType>
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{
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public:
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public:
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explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
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: stream(s)
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{}
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@ -12335,7 +12387,7 @@ public:
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stream.write(s, static_cast<std::streamsize>(length));
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}
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private:
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private:
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std::basic_ostream<CharType>& stream;
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};
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@ -12343,7 +12395,7 @@ private:
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template<typename CharType, typename StringType = std::basic_string<CharType>>
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class output_string_adapter : public output_adapter_protocol<CharType>
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{
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public:
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public:
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explicit output_string_adapter(StringType& s) noexcept
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: str(s)
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{}
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@ -12359,14 +12411,14 @@ public:
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str.append(s, length);
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}
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private:
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private:
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StringType& str;
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};
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template<typename CharType, typename StringType = std::basic_string<CharType>>
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class output_adapter
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{
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public:
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public:
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output_adapter(std::vector<CharType>& vec)
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: oa(std::make_shared<output_vector_adapter<CharType>>(vec)) {}
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@ -12381,7 +12433,7 @@ public:
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return oa;
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}
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private:
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private:
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output_adapter_t<CharType> oa = nullptr;
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};
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} // namespace detail
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@ -12406,7 +12458,7 @@ class binary_writer
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using binary_t = typename BasicJsonType::binary_t;
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using number_float_t = typename BasicJsonType::number_float_t;
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public:
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public:
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/*!
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@brief create a binary writer
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@ -13262,7 +13314,7 @@ public:
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}
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}
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private:
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private:
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//////////
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// BSON //
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//////////
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@ -13891,7 +13943,7 @@ private:
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}
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}
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public:
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public:
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// The following to_char_type functions are implement the conversion
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// between uint8_t and CharType. In case CharType is not unsigned,
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// such a conversion is required to allow values greater than 128.
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@ -13932,7 +13984,7 @@ public:
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return x;
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}
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private:
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private:
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/// whether we can assume little endianess
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const bool is_little_endian = little_endianess();
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@ -15113,7 +15165,7 @@ class serializer
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static constexpr std::uint8_t UTF8_ACCEPT = 0;
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static constexpr std::uint8_t UTF8_REJECT = 1;
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public:
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public:
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/*!
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@param[in] s output stream to serialize to
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@param[in] ichar indentation character to use
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@ -15428,7 +15480,7 @@ public:
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}
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}
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private:
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private:
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/*!
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@brief dump escaped string
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@ -15984,7 +16036,7 @@ private:
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return static_cast<number_unsigned_t>(-(x + 1)) + 1;
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}
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private:
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private:
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/// the output of the serializer
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output_adapter_t<char> o = nullptr;
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@ -16142,7 +16194,7 @@ class basic_json
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detail::parser_callback_t<basic_json>cb = nullptr,
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const bool allow_exceptions = true,
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const bool ignore_comments = false
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)
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)
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{
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return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
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std::move(cb), allow_exceptions, ignore_comments);
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@ -24678,7 +24730,7 @@ template<>
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inline void swap<nlohmann::json>(nlohmann::json& j1, nlohmann::json& j2) noexcept(
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is_nothrow_move_constructible<nlohmann::json>::value and
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is_nothrow_move_assignable<nlohmann::json>::value
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)
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)
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{
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j1.swap(j2);
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}
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