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json
Commit f1969e60 by Francois Chabot
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reamalgamate

parent 5684d9a4
Showing with 78 additions and 127 deletions
include/nlohmann/json.hpp
......@@ -6750,7 +6750,7 @@ class basic_json
}
/*!
@brief deserialize from stream
......
single_include/nlohmann/json.hpp
......@@ -4547,14 +4547,16 @@ class iterator_input_adapter
public:
using char_type = typename std::iterator_traits<IteratorType>::value_type;
iterator_input_adapter(IteratorType begin_ite, IteratorType end_ite)
: current(std::move(begin_ite)), end(std::move(end_ite)) {}
iterator_input_adapter(IteratorType first, IteratorType last)
: current(std::move(first)), end(std::move(last)) {}
typename std::char_traits<char_type>::int_type get_character()
{
if (current != end)
{
return *current++;
auto result = std::char_traits<char_type>::to_int_type(*current);
std::advance(current, 1);
return result;
}
else
{
......@@ -4562,14 +4564,18 @@ class iterator_input_adapter
}
}
private:
IteratorType current;
IteratorType end;
template<typename BaseInputAdapter, size_t T>
friend class wide_string_input_helper;
bool empty() const
{
return current == end;
}
private:
IteratorType current;
IteratorType end;
};
......@@ -4737,7 +4743,7 @@ class wide_string_input_adapter
std::size_t utf8_bytes_index = 0;
/// number of valid bytes in the utf8_codes array
std::size_t utf8_bytes_filled = 0;
}
};
template<typename IteratorType, typename Enable = void>
......@@ -4747,15 +4753,15 @@ struct iterator_input_adapter_factory
using char_type = typename std::iterator_traits<iterator_type>::value_type;
using adapter_type = iterator_input_adapter<iterator_type>;
adapter_type create(IteratorType begin, IteratorType end)
static adapter_type create(IteratorType begin, IteratorType end)
{
return adapter_type(std::move(begin), std::mve(end));
return adapter_type(std::move(begin), std::move(end));
}
};
template<typename IteratorType>
struct iterator_input_adapter_factory<IteratorType,
typename std::enable_if<(sizeof(typename std::iterator_traits<iterator_type>::value_type)>1)>::type >
typename std::enable_if<(sizeof(typename std::iterator_traits<IteratorType>::value_type)>1)>::type >
{
using iterator_type = IteratorType;
......@@ -4763,9 +4769,9 @@ struct iterator_input_adapter_factory<IteratorType,
using base_adapter_type = iterator_input_adapter<iterator_type>;
using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
adapter_type create(IteratorType begin, IteratorType end)
static adapter_type create(IteratorType begin, IteratorType end)
{
return adapter_type(base_adapter_type(std::move(begin), std::mve(end)));
return adapter_type(base_adapter_type(std::move(begin), std::move(end)));
}
};
......@@ -4773,12 +4779,13 @@ struct iterator_input_adapter_factory<IteratorType,
template<typename IteratorType>
typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType begin, IteratorType end)
{
return iterator_input_adapter_factory<IteratorType>::create(begin, end);
using factory_type = iterator_input_adapter_factory<IteratorType>;
return factory_type::create(begin, end);
}
// Convenience shorthand from container to iterator
template<typename ContainerType>
decltype(input_adapter(begin(container), end(container))) input_adapter(const T& container)
auto input_adapter(const ContainerType& container) -> decltype(input_adapter(begin(container), end(container)))
{
return input_adapter(begin(container), end(container));
}
......@@ -4799,6 +4806,8 @@ inline input_stream_adapter input_adapter(std::istream&& stream)
return input_stream_adapter(stream);
}
using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
// Null-delimited strings, and the like.
template<typename CharT,
typename std::enable_if<
......@@ -4806,7 +4815,7 @@ template<typename CharT,
std::is_integral<typename std::remove_pointer<CharT>::type>::value and
sizeof(typename std::remove_pointer<CharT>::type) == 1,
int>::type = 0>
input_buffer_adapter input_adapter(CharT b)
contiguous_bytes_input_adapter input_adapter(CharT b)
{
auto length = std::strlen(reinterpret_cast<const char*>(b));
auto ptr = reinterpret_cast<const char*>(b);
......@@ -4827,7 +4836,7 @@ class span_input_adapter
sizeof(typename std::remove_pointer<CharT>::type) == 1,
int>::type = 0>
span_input_adapter(CharT b, std::size_t l)
: ia(reinterpret_cast<const char*>(b), l) {}
: ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
template<typename CharT,
typename std::enable_if<
......@@ -4836,8 +4845,7 @@ class span_input_adapter
sizeof(typename std::remove_pointer<CharT>::type) == 1,
int>::type = 0>
span_input_adapter(CharT b)
: span_input_adapter(reinterpret_cast<const char*>(b),
std::strlen(reinterpret_cast<const char*>(b))) {}
: span_input_adapter(b, std::strlen(reinterpret_cast<const char*>(b))) {}
template<class IteratorType,
typename std::enable_if<
......@@ -4858,13 +4866,13 @@ class span_input_adapter
span_input_adapter(const ContiguousContainer& c)
: span_input_adapter(std::begin(c), std::end(c)) {}
input_buffer_adapter&& get()
contiguous_bytes_input_adapter&& get()
{
return std::move(ia);
}
private:
input_buffer_adapter ia;
contiguous_bytes_input_adapter ia;
};
} // namespace detail
} // namespace nlohmann
......@@ -22390,7 +22398,7 @@ class basic_json
const bool allow_exceptions = true)
{
basic_json result;
parser(detail::iterator_input_adapter(std::move(begin), std::move(end)), cb, allow_exceptions).parse(true, result);
parser(detail::input_adapter(std::move(begin), std::move(end)), cb, allow_exceptions).parse(true, result);
return result;
}
......@@ -22413,7 +22421,7 @@ class basic_json
template<typename IteratorType>
static bool accept(IteratorType begin, IteratorType end)
{
return parser(detail::iterator_input_adapter(std::move(begin), std::move(end))).accept(true);
return parser(detail::input_adapter(std::move(begin), std::move(end))).accept(true);
}
static bool accept(detail::span_input_adapter&& i)
......@@ -22474,7 +22482,7 @@ class basic_json
@since version 3.2.0
*/
template <typename SAX, typename InputType>
template <typename InputType, typename SAX>
JSON_HEDLEY_NON_NULL(2)
static bool sax_parse(InputType&& i, SAX* sax,
input_format_t format = input_format_t::json,
......@@ -22486,6 +22494,18 @@ class basic_json
: detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
}
template<class IteratorType, class SAX>
JSON_HEDLEY_NON_NULL(3)
static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
input_format_t format = input_format_t::json,
const bool strict = true)
{
auto ia = detail::input_adapter(std::move(first), std::move(last));
return format == input_format_t::json
? parser(std::move(ia)).sax_parse(sax, strict)
: detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
}
template <typename SAX>
JSON_HEDLEY_NON_NULL(2)
static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
......@@ -22499,86 +22519,7 @@ class basic_json
}
/*!
@brief deserialize from an iterator range with contiguous storage
This function reads from an iterator range of a container with contiguous
storage of 1-byte values. Compatible container types include
`std::vector`, `std::string`, `std::array`, `std::valarray`, and
`std::initializer_list`. Furthermore, C-style arrays can be used with
`std::begin()`/`std::end()`. User-defined containers can be used as long
as they implement random-access iterators and a contiguous storage.
@pre The iterator range is contiguous. Violating this precondition yields
undefined behavior. **This precondition is enforced with an assertion.**
@pre Each element in the range has a size of 1 byte. Violating this
precondition yields undefined behavior. **This precondition is enforced
with a static assertion.**
@warning There is no way to enforce all preconditions at compile-time. If
the function is called with noncompliant iterators and with
assertions switched off, the behavior is undefined and will most
likely yield segmentation violation.
@tparam IteratorType iterator of container with contiguous storage
@param[in] first begin of the range to parse (included)
@param[in] last end of the range to parse (excluded)
@param[in] cb a parser callback function of type @ref parser_callback_t
which is used to control the deserialization by filtering unwanted values
(optional)
@param[in] allow_exceptions whether to throw exceptions in case of a
parse error (optional, true by default)
@return deserialized JSON value; in case of a parse error and
@a allow_exceptions set to `false`, the return value will be
value_t::discarded.
@throw parse_error.101 in case of an unexpected token
@throw parse_error.102 if to_unicode fails or surrogate error
@throw parse_error.103 if to_unicode fails
@complexity Linear in the length of the input. The parser is a predictive
LL(1) parser. The complexity can be higher if the parser callback function
@a cb has a super-linear complexity.
@note A UTF-8 byte order mark is silently ignored.
@liveexample{The example below demonstrates the `parse()` function reading
from an iterator range.,parse__iteratortype__parser_callback_t}
@since version 2.0.3
*/
template<class IteratorType, typename std::enable_if<
std::is_base_of<
std::random_access_iterator_tag,
typename std::iterator_traits<IteratorType>::iterator_category>::value, int>::type = 0>
static basic_json parse(IteratorType first, IteratorType last,
const parser_callback_t cb = nullptr,
const bool allow_exceptions = true)
{
basic_json result;
parser(detail::input_adapter(first, last), cb, allow_exceptions).parse(true, result);
return result;
}
template<class IteratorType, typename std::enable_if<
std::is_base_of<
std::random_access_iterator_tag,
typename std::iterator_traits<IteratorType>::iterator_category>::value, int>::type = 0>
static bool accept(IteratorType first, IteratorType last)
{
return parser(detail::input_adapter(first, last)).accept(true);
}
template<class IteratorType, class SAX, typename std::enable_if<
std::is_base_of<
std::random_access_iterator_tag,
typename std::iterator_traits<IteratorType>::iterator_category>::value, int>::type = 0>
JSON_HEDLEY_NON_NULL(3)
static bool sax_parse(IteratorType first, IteratorType last, SAX* sax)
{
return parser(detail::input_adapter(first, last)).sax_parse(sax);
}
/*!
@brief deserialize from stream
......@@ -23228,16 +23169,16 @@ class basic_json
/*!
@copydoc from_cbor(detail::input_adapter&&, const bool, const bool)
*/
template<typename A1, typename A2,
detail::enable_if_t<std::is_constructible<detail::span_input_adapter, A1, A2>::value, int> = 0>
template<typename IteratorType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_cbor(A1 && a1, A2 && a2,
static basic_json from_cbor(IteratorType first, IteratorType last,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(detail::span_input_adapter(std::forward<A1>(a1), std::forward<A2>(a2)).get()).sax_parse(input_format_t::cbor, &sdp, strict);
auto ia = detail::input_adapter(std::move(first), std::move(last));
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23248,7 +23189,8 @@ class basic_json
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(i.get()).sax_parse(input_format_t::cbor, &sdp, strict);
auto ia = i.get();
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23354,16 +23296,16 @@ class basic_json
/*!
@copydoc from_msgpack(detail::input_adapter&&, const bool, const bool)
*/
template<typename A1, typename A2,
detail::enable_if_t<std::is_constructible<detail::span_input_adapter, A1, A2>::value, int> = 0>
template<typename IteratorType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_msgpack(A1 && a1, A2 && a2,
static basic_json from_msgpack(IteratorType first, IteratorType last,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(detail::span_input_adapter(std::forward<A1>(a1), std::forward<A2>(a2)).get()).sax_parse(input_format_t::msgpack, &sdp, strict);
auto ia = detail::input_adapter(std::move(first), std::move(last));
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23375,7 +23317,8 @@ class basic_json
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(i.get()).sax_parse(input_format_t::msgpack, &sdp, strict);
auto ia = i.get();
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23457,16 +23400,16 @@ class basic_json
/*!
@copydoc from_ubjson(detail::input_adapter&&, const bool, const bool)
*/
template<typename A1, typename A2,
detail::enable_if_t<std::is_constructible<detail::span_input_adapter, A1, A2>::value, int> = 0>
template<typename IteratorType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_ubjson(A1 && a1, A2 && a2,
static basic_json from_ubjson(IteratorType first, IteratorType last,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(detail::span_input_adapter(std::forward<A1>(a1), std::forward<A2>(a2)).get()).sax_parse(input_format_t::ubjson, &sdp, strict);
auto ia = detail::input_adapter(std::move(first), std::move(last));
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23477,7 +23420,8 @@ class basic_json
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(i.get()).sax_parse(input_format_t::ubjson, &sdp, strict);
auto ia = i.get();
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23558,16 +23502,16 @@ class basic_json
/*!
@copydoc from_bson(detail::input_adapter&&, const bool, const bool)
*/
template<typename A1, typename A2,
detail::enable_if_t<std::is_constructible<detail::span_input_adapter, A1, A2>::value, int> = 0>
template<typename IteratorType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_bson(A1 && a1, A2 && a2,
static basic_json from_bson(IteratorType first, IteratorType last,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(detail::span_input_adapter(std::forward<A1>(a1), std::forward<A2>(a2)).get()).sax_parse(input_format_t::bson, &sdp, strict);
auto ia = detail::input_adapter(std::move(first), std::move(last));
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
......@@ -23578,7 +23522,8 @@ class basic_json
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader<detail::input_buffer_adapter>(i.get()).sax_parse(input_format_t::bson, &sdp, strict);
auto ia = i.get();
const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
/// @}
......
test/src/unit-user_defined_input.cpp
......@@ -79,7 +79,8 @@ TEST_CASE("Custom iterator")
{
const char* raw_data = "[1,2,3,4]";
struct MyIterator {
struct MyIterator
{
using difference_type = std::size_t;
using value_type = char;
using pointer = const char*;
......@@ -87,13 +88,18 @@ TEST_CASE("Custom iterator")
using iterator_category = std::input_iterator_tag;
MyIterator& operator++() {
MyIterator& operator++()
{
++ptr;
return *this;
}
reference operator*() const {return *ptr;}
bool operator!=(const MyIterator& rhs) const {
reference operator*() const
{
return *ptr;
}
bool operator!=(const MyIterator& rhs) const
{
return ptr != rhs.ptr;
}
......
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