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Author SHA1 Message Date
Niels Lohmann df0dad135c Merge branch 'develop' into claude/issue-2226-5c9bef
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-28 22:22:32 +02:00
Niels Lohmann 55670233ea Skip json reference tuple tests on clang < 4 and GCC < 5
ci_test_compilers_gcc_old (4.8) and ci_test_compilers_clang (3.4) could
not compile the new tuple tests. Creating a std::tuple of basic_json
references, e.g. std::forward_as_tuple(j), makes these compilers
instantiate basic_json's conversion operator for libstdc++'s internal
tuple bases, which fails hard. This happens with and without
JSON_DISABLE_TUPLE_REFERENCE_CONVERSION, so it is a limitation of these
compilers, not of the new option.

Tested with the CI images: clang 3.4 to 3.9 and GCC 4.8 and 4.9 fail,
clang 4, 5, and 6 and GCC 5 and 6 compile all cases. Skip only the
checks that create such tuples; the is_constructible checks still run.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-28 18:59:28 +02:00
Niels Lohmann 82667aadff Convert one-element tuples to arrays on every compiler
to_json for std::tuple assigns a braced list, j = { std::get<Idx>(t)... }.
With a single element that is itself a basic_json, Apple clang 15 and 16
treat j = {x} as a copy of x, so std::tuple<json>{true} became true
instead of [true]. The macOS jobs (Xcode 15.1, 16.1) failed the new
checks in unit-disable-tuple-reference-conversion and unit-regression2.

The one-element overload that already handles
JSON_BRACE_INIT_COPY_SEMANTICS builds the array (or object, for a
[string, value] element) explicitly, the same way the initializer-list
constructor does. Use it unconditionally. The output is unchanged on
compilers that already wrapped the element.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-28 02:10:24 +02:00
Niels Lohmann bc69ff786d Merge branch 'develop' into claude/issue-2226-5c9bef
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-27 20:57:52 +02:00
Niels Lohmann c5f1694b01 Add JSON_DISABLE_TUPLE_REFERENCE_CONVERSION to fix std::tuple conversions
basic_json can be constructed from std::tuple<json&>, which it turns into
a one-element array. Because of this, std::tuple picks its converting
constructor that converts the whole source tuple instead of the
element-wise one. As a result, std::tuple<const json&> built from
std::forward_as_tuple(j) binds to a temporary (a compile error with libc++,
a dangling reference with other standard libraries), and std::tuple<json>
built the same way holds [j] instead of a copy of j.

The new opt-in macro JSON_DISABLE_TUPLE_REFERENCE_CONVERSION (CMake option
JSON_DisableTupleReferenceConversion) removes the conversion from a
one-element tuple holding a reference to the same basic_json type, so
std::tuple converts element-wise. It is off by default, so existing
behavior is unchanged. It does not change any function body and therefore
is not part of the ABI tag.

Fixes #2226

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-27 17:17:51 +02:00
40 changed files with 697 additions and 5057 deletions
+1 -1
View File
@@ -100,7 +100,7 @@ jobs:
container: ubuntu:focal
strategy:
matrix:
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls, ci_test_disableenumserialization, ci_test_skiplibraryversioncheck, ci_test_simdutf, ci_test_strict_nul_handling, ci_test_no_thread_local]
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls, ci_test_disableenumserialization, ci_test_disabletuplereferenceconversion, ci_test_skiplibraryversioncheck, ci_test_simdutf, ci_test_strict_nul_handling, ci_test_no_thread_local]
steps:
- name: Install build-essential
run: apt-get update ; apt-get install -y build-essential unzip wget git libssl-dev
-10
View File
@@ -20,9 +20,7 @@ cc_library(
hdrs = [
"include/nlohmann/adl_serializer.hpp",
"include/nlohmann/byte_container_with_subtype.hpp",
"include/nlohmann/detail/abi_config.hpp",
"include/nlohmann/detail/abi_macros.hpp",
"include/nlohmann/detail/bit_ops.hpp",
"include/nlohmann/detail/conversions/from_json.hpp",
"include/nlohmann/detail/conversions/to_chars.hpp",
"include/nlohmann/detail/conversions/to_json.hpp",
@@ -35,7 +33,6 @@ cc_library(
"include/nlohmann/detail/input/number_parse.hpp",
"include/nlohmann/detail/input/parser.hpp",
"include/nlohmann/detail/input/position_t.hpp",
"include/nlohmann/detail/input/pow5_table.hpp",
"include/nlohmann/detail/input/string_scan.hpp",
"include/nlohmann/detail/iterators/internal_iterator.hpp",
"include/nlohmann/detail/iterators/iter_impl.hpp",
@@ -66,13 +63,6 @@ cc_library(
"include/nlohmann/detail/string_escape.hpp",
"include/nlohmann/detail/string_utils.hpp",
"include/nlohmann/detail/value_t.hpp",
"include/nlohmann/detail/view/builder.hpp",
"include/nlohmann/detail/view/document_data.hpp",
"include/nlohmann/detail/view/macro_scope.hpp",
"include/nlohmann/detail/view/macro_unscope.hpp",
"include/nlohmann/detail/view/node.hpp",
"include/nlohmann/detail/view/scan.hpp",
"include/nlohmann/detail/view/string_ref.hpp",
"include/nlohmann/json.hpp",
"include/nlohmann/json_fwd.hpp",
"include/nlohmann/ordered_map.hpp",
+6
View File
@@ -55,6 +55,7 @@ option(JSON_Diagnostic_Positions "Enable diagnostic positions." OFF)
option(JSON_GlobalUDLs "Place user-defined string literals in the global namespace." ON)
option(JSON_ImplicitConversions "Enable implicit conversions." ON)
option(JSON_DisableEnumSerialization "Disable default integer enum serialization." OFF)
option(JSON_DisableTupleReferenceConversion "Disable conversion from a one-element tuple of a JSON reference." OFF)
option(JSON_LegacyDiscardedValueComparison "Enable legacy discarded value comparison." OFF)
option(JSON_Install "Install CMake targets during install step." ${MAIN_PROJECT})
option(JSON_MultipleHeaders "Use non-amalgamated version of the library." ON)
@@ -101,6 +102,10 @@ if (JSON_DisableEnumSerialization)
message(STATUS "Enum integer serialization is disabled (JSON_DISABLE_ENUM_SERIALIZATION=1)")
endif()
if (JSON_DisableTupleReferenceConversion)
message(STATUS "Tuple reference conversion is disabled (JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1)")
endif()
if (JSON_LegacyDiscardedValueComparison)
message(STATUS "Legacy discarded value comparison enabled (JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1)")
endif()
@@ -143,6 +148,7 @@ target_compile_definitions(
$<$<NOT:$<BOOL:${JSON_GlobalUDLs}>>:JSON_USE_GLOBAL_UDLS=0>
$<$<NOT:$<BOOL:${JSON_ImplicitConversions}>>:JSON_USE_IMPLICIT_CONVERSIONS=0>
$<$<BOOL:${JSON_DisableEnumSerialization}>:JSON_DISABLE_ENUM_SERIALIZATION=1>
$<$<BOOL:${JSON_DisableTupleReferenceConversion}>:JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1>
$<$<BOOL:${JSON_Diagnostics}>:JSON_DIAGNOSTICS=1>
$<$<BOOL:${JSON_Diagnostic_Positions}>:JSON_DIAGNOSTIC_POSITIONS=1>
$<$<BOOL:${JSON_LegacyDiscardedValueComparison}>:JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1>
-1
View File
@@ -1395,7 +1395,6 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
- The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
- The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
- The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
- The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
<img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">
+14
View File
@@ -276,6 +276,20 @@ add_custom_target(ci_test_disableenumserialization
COMMENT "Compile and test with enum serialization disabled"
)
###############################################################################
# Disable conversion from a one-element tuple of a JSON reference.
###############################################################################
add_custom_target(ci_test_disabletuplereferenceconversion
COMMAND ${CMAKE_COMMAND}
-DCMAKE_BUILD_TYPE=Debug -GNinja
-DJSON_BuildTests=ON -DJSON_FastTests=ON -DJSON_DisableTupleReferenceConversion=ON
-S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion
COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion
COMMAND cd ${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
COMMENT "Compile and test with tuple reference conversion disabled"
)
###############################################################################
# Skip the multiple-inclusion library version check.
###############################################################################
+1
View File
@@ -210,6 +210,7 @@ INSERT INTO searchIndex(name, type, path) VALUES ('JSON_CATCH_USER', 'Macro', 'a
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTICS', 'Macro', 'api/macros/json_diagnostics/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTIC_POSITIONS', 'Macro', 'api/macros/json_diagnostic_positions/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_ENUM_SERIALIZATION', 'Macro', 'api/macros/json_disable_enum_serialization/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_TUPLE_REFERENCE_CONVERSION', 'Macro', 'api/macros/json_disable_tuple_reference_conversion/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_11', 'Macro', 'api/macros/json_has_cpp_11/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_14', 'Macro', 'api/macros/json_has_cpp_11/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_17', 'Macro', 'api/macros/json_has_cpp_11/index.html');
@@ -159,6 +159,8 @@ basic_json(basic_json&& other) noexcept;
- `CompatibleType` is not `basic_json` (to avoid hijacking copy/move constructors),
- `CompatibleType` is not a different `basic_json` type (i.e. with different template arguments)
- `CompatibleType` is not a `basic_json` nested type (e.g., `json_pointer`, `iterator`, etc.)
- if [`JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../macros/json_disable_tuple_reference_conversion.md) is defined
to `1`: `CompatibleType` is not a one-element `std::tuple` holding a reference to `basic_json`
- `json_serializer<U>` (with `U = uncvref_t<CompatibleType>`) has a `to_json(basic_json_t&, CompatibleType&&)`
method
+1
View File
@@ -52,6 +52,7 @@ header. See also the [macro overview page](../../features/macros.md).
- [**JSON_BRACE_INIT_COPY_SEMANTICS**](json_brace_init_copy_semantics.md) - opt in to copy/move semantics for single-element brace initialization
- [**JSON_DISABLE_ENUM_SERIALIZATION**](json_disable_enum_serialization.md) - switch off default serialization/deserialization functions for enums
- [**JSON_DISABLE_TUPLE_REFERENCE_CONVERSION**](json_disable_tuple_reference_conversion.md) - switch off conversion from a one-element tuple of a JSON reference
- [**JSON_USE_IMPLICIT_CONVERSIONS**](json_use_implicit_conversions.md) - control implicit conversions
## Comparison behavior
@@ -0,0 +1,114 @@
# JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION /* value */
```
When defined to `1`, a `basic_json` value can no longer be constructed from a one-element `std::tuple` whose element is
a reference to that `basic_json` type, such as `std::tuple<json&>`, `std::tuple<const json&>`, or `std::tuple<json&&>`.
These are the tuples created by `std::forward_as_tuple(j)`.
## Default definition
The default value is `0` (disabled — existing behavior is preserved).
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 0
```
## Notes
!!! note "Background"
By default, `basic_json` can be constructed from any `std::tuple` whose elements can be converted to JSON; the result
is an array. This includes `std::tuple<json&>`, which becomes a one-element array.
`std::tuple` only converts another tuple element by element if its element type cannot be constructed from the whole
source tuple. Because `json` *can* be constructed from `std::tuple<json&>`, `std::tuple` instead converts the whole
tuple into a single `json` value. This has two surprising effects:
```cpp
json j = true;
// rejected by some standard libraries (e.g., libc++); with others, the
// reference binds to a temporary that is destroyed right away
std::tuple<const json&> t1(std::forward_as_tuple(j));
// compiles, but std::get<0>(t2) is [true], not true
std::tuple<json> t2(std::forward_as_tuple(j));
```
Enabling this macro removes the conversion, so both tuples are converted element by element: `std::get<0>(t1)`
refers to `j`, and `std::get<0>(t2)` is a copy of `j` (see [#2226](https://github.com/nlohmann/json/issues/2226)).
!!! warning "Opt-in only"
This macro must be defined **before** including `<nlohmann/json.hpp>`. Defining it after the include has no effect.
!!! note "Affected conversions"
Only one-element tuples holding a reference to the **same** `basic_json` type are affected. Constructing a JSON value
from them no longer compiles:
```cpp
json j = true;
json a = std::forward_as_tuple(j); // error with the macro enabled
json b = json::array({j}); // use this instead: [true]
```
Tuples holding a JSON value (`std::make_tuple(j)`), tuples with more than one element, and tuples holding references
to other types (including other `basic_json` specializations) are converted to arrays as before.
!!! hint "CMake option"
This behavior can also be controlled with the CMake option
[`JSON_DisableTupleReferenceConversion`](../../integration/cmake.md#json_disabletuplereferenceconversion)
(`OFF` by default) which defines `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION` accordingly.
## Examples
??? example "Default behavior (macro not defined)"
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
json j = true;
std::tuple<json> t(std::forward_as_tuple(j));
// std::get<0>(t) is [true] -- the whole tuple was converted
}
```
??? example "Conversion disabled (macro defined to 1)"
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
json j = true;
std::tuple<json> t(std::forward_as_tuple(j));
// std::get<0>(t) is true -- a copy of j
std::tuple<const json&> r(std::forward_as_tuple(j));
// std::get<0>(r) refers to j
}
```
## See also
- [**basic_json(CompatibleType&&)**](../basic_json/basic_json.md) - the affected constructor
- [:simple-cmake: JSON_DisableTupleReferenceConversion](../../integration/cmake.md#json_disabletuplereferenceconversion) -
CMake option to control the macro
## Version history
- Added in version 3.13.0.
+7
View File
@@ -83,6 +83,13 @@ When defined, default parse and serialize functions for enums are excluded and h
See [full documentation of `JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md).
## `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`
When defined to `1`, a JSON value can no longer be created from a one-element `std::tuple` holding a reference to a JSON
value, such as the result of `std::forward_as_tuple(j)`. This lets `std::tuple` convert such tuples element-wise.
See [full documentation of `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../api/macros/json_disable_tuple_reference_conversion.md).
## `JSON_NO_IO`
When defined, headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and `<ostream>` are not included and parse functions
-2
View File
@@ -19,5 +19,3 @@ The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed und
The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
+6
View File
@@ -169,6 +169,12 @@ Enable position diagnostics by defining macro [`JSON_DIAGNOSTIC_POSITIONS`](../a
Disable default `enum` serialization by defining the macro
[`JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md). This option is `OFF` by default.
### `JSON_DisableTupleReferenceConversion`
Disable the conversion from a one-element `std::tuple` holding a reference to a JSON value by defining the macro
[`JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../api/macros/json_disable_tuple_reference_conversion.md). This option is
`OFF` by default.
### `JSON_FastTests`
Skip expensive/slow test suites. This option is `OFF` by default. Depends on `JSON_BuildTests`.
+1
View File
@@ -287,6 +287,7 @@ nav:
- 'JSON_DIAGNOSTICS': api/macros/json_diagnostics.md
- 'JSON_DIAGNOSTIC_POSITIONS': api/macros/json_diagnostic_positions.md
- 'JSON_DISABLE_ENUM_SERIALIZATION': api/macros/json_disable_enum_serialization.md
- 'JSON_DISABLE_TUPLE_REFERENCE_CONVERSION': api/macros/json_disable_tuple_reference_conversion.md
- 'JSON_HAS_CPP_11, JSON_HAS_CPP_14, JSON_HAS_CPP_17, JSON_HAS_CPP_20': api/macros/json_has_cpp_11.md
- 'JSON_HAS_EXPERIMENTAL_FILESYSTEM, JSON_HAS_FILESYSTEM': api/macros/json_has_filesystem.md
- 'JSON_HAS_RANGES': api/macros/json_has_ranges.md
-34
View File
@@ -1,34 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <nlohmann/detail/abi_macros.hpp>
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
/*!
@brief the configuration macros that change the library's behavior
json.hpp undefines these macros at its end (see macro_unscope.hpp), so code
that builds on the library after it (json_view.hpp) reads them here. Like the
macros, they are part of the ABI namespace, so they always match the
basic_json they are used with.
*/
struct abi_config
{
/// JSON_STRICT_NUL_HANDLING: a null byte is an error, not the end of input
static constexpr bool strict_nul_handling = JSON_STRICT_NUL_HANDLING != 0;
/// JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
static constexpr bool legacy_discarded_value_comparison = JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON != 0;
};
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
-105
View File
@@ -1,105 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <cstdint> // uint64_t
#include <nlohmann/detail/abi_macros.hpp>
// Portable bit-level helpers for the number and string scanners. They use
// compiler builtins where available and plain C++ otherwise, so they need no
// platform headers and work regardless of byte order.
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
/// number of leading zero bits of x (x != 0)
inline int count_leading_zeros(std::uint64_t x) noexcept
{
#if defined(__GNUC__) || defined(__clang__)
return __builtin_clzll(x);
#else
int n = 0;
for (int shift = 32; shift != 0; shift >>= 1)
{
if ((x >> (64 - shift)) == 0)
{
n += shift;
x <<= shift;
}
}
return n;
#endif
}
/// number of trailing zero bits of x (x != 0)
inline int count_trailing_zeros(std::uint64_t x) noexcept
{
#if defined(__GNUC__) || defined(__clang__)
return __builtin_ctzll(x);
#else
int n = 0;
for (int shift = 32; shift != 0; shift >>= 1)
{
if ((x << (64 - shift)) == 0)
{
n += shift;
x >>= shift;
}
}
return n;
#endif
}
/// the 128-bit product of two 64-bit numbers
struct uint128_parts
{
std::uint64_t low;
std::uint64_t high;
};
inline uint128_parts full_multiplication(std::uint64_t a, std::uint64_t b) noexcept
{
#if defined(__SIZEOF_INT128__)
__extension__ using uint128 = unsigned __int128;
const uint128 r = static_cast<uint128>(a) * b;
return {static_cast<std::uint64_t>(r), static_cast<std::uint64_t>(r >> 64u)};
#else
const std::uint64_t a_lo = a & 0xFFFFFFFFu;
const std::uint64_t a_hi = a >> 32u;
const std::uint64_t b_lo = b & 0xFFFFFFFFu;
const std::uint64_t b_hi = b >> 32u;
const std::uint64_t lo_lo = a_lo * b_lo;
const std::uint64_t hi_lo = a_hi * b_lo;
const std::uint64_t lo_hi = a_lo * b_hi;
const std::uint64_t hi_hi = a_hi * b_hi;
const std::uint64_t cross = (lo_lo >> 32u) + (hi_lo & 0xFFFFFFFFu) + lo_hi;
return {(cross << 32u) | (lo_lo & 0xFFFFFFFFu), (hi_lo >> 32u) + (cross >> 32u) + hi_hi};
#endif
}
/// eight bytes as a little-endian word (compilers fold this into one load on
/// little-endian targets)
inline std::uint64_t read_eight_bytes(const unsigned char* b) noexcept
{
return static_cast<std::uint64_t>(b[0]) | (static_cast<std::uint64_t>(b[1]) << 8u)
| (static_cast<std::uint64_t>(b[2]) << 16u) | (static_cast<std::uint64_t>(b[3]) << 24u)
| (static_cast<std::uint64_t>(b[4]) << 32u) | (static_cast<std::uint64_t>(b[5]) << 40u)
| (static_cast<std::uint64_t>(b[6]) << 48u) | (static_cast<std::uint64_t>(b[7]) << 56u);
}
/// eight bytes as a little-endian word
inline std::uint64_t read_eight_bytes(const char* p) noexcept
{
return read_eight_bytes(reinterpret_cast<const unsigned char*>(p)); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
}
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
@@ -471,11 +471,13 @@ inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<
j = { std::get<Idx>(t)... };
}
#if JSON_BRACE_INIT_COPY_SEMANTICS
// JSON_BRACE_INIT_COPY_SEMANTICS makes a one-element braced list copy its
// element instead of wrapping it, which would serialize std::tuple<int>{5} as 5
// rather than [5]. Build what the default deduction builds instead: an object
// if the element is a [string, value] pair, a one-element array otherwise.
// A one-element braced list does not reliably wrap its element: with
// JSON_BRACE_INIT_COPY_SEMANTICS it copies it, which would serialize
// std::tuple<int>{5} as 5 rather than [5], and some compilers (e.g., Apple clang
// 15 and 16) copy an element that is itself a basic_json even without it, so
// std::tuple<json>{true} became true rather than [true]. Build what the default
// deduction builds instead: an object if the element is a [string, value] pair,
// a one-element array otherwise.
template<typename BasicJsonType, typename Tuple>
inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<0> /*unused*/)
{
@@ -493,7 +495,6 @@ inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<
j = BasicJsonType::array({std::move(element)});
}
}
#endif
template<typename BasicJsonType, typename Tuple>
inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& /*unused*/, index_sequence<> /*unused*/)
+148 -47
View File
@@ -9,8 +9,10 @@
#pragma once
#include <array> // array
#include <clocale> // localeconv
#include <cstddef> // size_t
#include <cstdio> // snprintf
#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
#include <initializer_list> // initializer_list
#include <string> // char_traits, string
#include <utility> // move
@@ -216,46 +218,20 @@ class lexer : public lexer_base<BasicJsonType>
private:
/////////////////////
// scan functions
// locales
/////////////////////
/// contiguous input: try to decode the 4 hex digits following `\u`
/// directly from the input buffer via hex_codepoint(), instead of 4 calls
/// to get(). On success, advances the adapter and the position counters
/// exactly as those 4 get() calls would (a hex digit is never '\n', so
/// only the flat counters move) and leaves @a current holding the last of
/// the 4 digits, just as the last such get() would; the codepoint is
/// written to @a out. Makes no state change and returns false - for a
/// pending unget, fewer than 4 remaining bytes, or any of the 4 bytes not
/// being a hex digit - so the caller falls back unchanged to the
/// per-character loop, which then reports the same diagnostic (stopping
/// at the first invalid digit) as before this optimization.
bool get_codepoint_bulk(std::true_type /*bulk*/, int& out)
/// return the decimal point of the current locale
static char get_decimal_point() noexcept
{
if (next_unget || ia.bulk_remaining() < 4)
{
return false;
}
const char_type* const raw = ia.bulk_data();
const int codepoint = hex_codepoint(reinterpret_cast<const unsigned char*>(raw));
if (codepoint < 0)
{
return false;
}
ia.bulk_skip(4);
// a hex digit is never a newline, so only the flat counters advance
position.chars_read_total += 4;
position.chars_read_current_line += 4;
current = char_traits<char_type>::to_int_type(raw[3]);
out = codepoint;
return true;
const auto* loc = localeconv();
JSON_ASSERT(loc != nullptr);
return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
}
/// streaming input: no bulk fast path
bool get_codepoint_bulk(std::false_type /*bulk*/, int& /*out*/) const noexcept
{
return false;
}
/////////////////////
// scan functions
/////////////////////
/*!
@brief get codepoint from 4 hex characters following `\u`
@@ -276,14 +252,6 @@ class lexer : public lexer_base<BasicJsonType>
{
// this function only makes sense after reading `\u`
JSON_ASSERT(current == 'u');
// contiguous input: decode all 4 hex digits directly from the buffer
int fast_codepoint = 0;
if (get_codepoint_bulk(std::integral_constant<bool, bulk_scan> {}, fast_codepoint))
{
return fast_codepoint;
}
int codepoint = 0;
const auto factors = { 12u, 8u, 4u, 0u };
@@ -1068,6 +1036,24 @@ class lexer : public lexer_base<BasicJsonType>
}
}
JSON_HEDLEY_NON_NULL(2)
static void strtof(float& f, const char* str, char** endptr) noexcept
{
f = std::strtof(str, endptr);
}
JSON_HEDLEY_NON_NULL(2)
static void strtof(double& f, const char* str, char** endptr) noexcept
{
f = std::strtod(str, endptr);
}
JSON_HEDLEY_NON_NULL(2)
static void strtof(long double& f, const char* str, char** endptr) noexcept
{
f = std::strtold(str, endptr);
}
/*!
@brief scan a number literal
@@ -1107,7 +1093,7 @@ class lexer : public lexer_base<BasicJsonType>
@note The scanner is independent of the current locale: token_buffer
always holds `.`. Only the std::strtod fallback of convert_number()
depends on the locale, and it looks up the decimal point right
before converting (see detail::convert_float_locale_aware()).
before converting (see convert_float_locale_aware()).
*/
token_type scan_number() // lgtm [cpp/use-of-goto] `goto` is used in this function to implement the number-parsing state machine described above. By design, any finite input will eventually reach the "done" state or return token_type::parse_error. In each intermediate state, 1 byte of the input is appended to the token_buffer vector, and only the already initialized variables token_buffer, number_type, and error_message are manipulated.
{
@@ -1438,6 +1424,59 @@ scan_number_done:
return token_type::uninitialized;
}
/*!
@brief check whether Clinger's fast path can still succeed for this token
parse_float_fast() needs a significand below 2^53. A mantissa with 17 or
more significant digits is at least 10^16 and therefore always exceeds it,
so calling the fast path would walk the token one extra time only to
decline before strtod has to run anyway.
Significant digits are the mantissa's digits from the first nonzero one on;
the sign, the decimal point, leading zeros, and the exponent do not count.
The answer is derived from indices - the digits are not scanned again - so
this stays off the hot path of the number scanners.
@param[in] mantissa_end offset just past the last mantissa byte in
token_buffer
@return false if parse_float_fast() is guaranteed to decline
*/
bool mantissa_fits_clinger(std::size_t mantissa_end) const
{
// 10^16 already exceeds 2^53, so 17 digits can never fit
constexpr std::size_t limit = 17;
const std::size_t neg = (!token_buffer.empty() && token_buffer[0] == '-') ? 1u : 0u;
const std::size_t has_dot = (decimal_point_position != std::string::npos) ? 1u : 0u;
// the JSON grammar restricts the integer part to "0" or [1-9][0-9]*, so
// a leading zero can only be a lone "0", which is not significant
const std::size_t lead_zero = (token_buffer[neg] == '0') ? 1u : 0u;
JSON_ASSERT(mantissa_end >= neg + has_dot + lead_zero);
std::size_t digits = mantissa_end - neg - has_dot - lead_zero;
if (JSON_HEDLEY_LIKELY(digits < limit))
{
return true;
}
// Only a number below 1 can carry further insignificant zeros, and only
// while the count stays at the limit does removing them change the
// answer - so this loop is skipped for all but a few tokens. The
// fraction is located through decimal_point_position rather than by
// searching '.'.
if (lead_zero != 0)
{
JSON_ASSERT(has_dot != 0); // an integer "0" cannot reach the limit
for (std::size_t i = decimal_point_position + 1;
digits >= limit && i < mantissa_end && token_buffer[i] == '0'; ++i)
{
--digits;
}
}
return digits < limit;
}
/*!
@brief convert the number text in token_buffer to its value and token type
@@ -1451,7 +1490,7 @@ scan_number_done:
token_buffer (the index of 'e'/'E', or
token_buffer.size() when there is no exponent);
used to skip Clinger's fast path when it cannot
possibly succeed - see detail::mantissa_fits_clinger()
possibly succeed - see mantissa_fits_clinger()
*/
token_type convert_number(token_type number_type, std::size_t mantissa_end)
{
@@ -1524,15 +1563,77 @@ scan_number_done:
// (Eisel-Lemire, locale-independent, correctly rounded) when available;
// otherwise the exact Clinger fast path (double only); otherwise the
// locale-aware strtof/strtod/strtold.
if (convert_float_fast(num_begin, num_end, decimal_point_position, mantissa_end, value_float))
if (parse_float_from_chars(num_begin, num_end, value_float))
{
return token_type::value_float;
}
// Skipping a fast path that cannot succeed is lossless and saves a full
// extra pass over the token's bytes, which otherwise shows up on
// high-precision inputs such as canada.json
if (mantissa_fits_clinger(mantissa_end)
&& parse_float_fast(num_begin, num_end, value_float))
{
return token_type::value_float;
}
convert_float_locale_aware(token_buffer, decimal_point_position, value_float);
convert_float_locale_aware();
return token_type::value_float;
}
/*!
@brief convert the float in token_buffer with strtof/strtod/strtold
These functions expect the decimal point of the *current* locale, so it is
looked up right before the conversion instead of once when the lexer is
constructed: a locale change in between (by a parser callback, a SAX
handler, or another thread) must not truncate the value (#5198). The
token has been validated before, so if the conversion stops early and the
decimal point changed in the meantime, the locale changed between the
lookup and the call, and the conversion is repeated with the new decimal
point. If the decimal point did not change, a retry cannot succeed: the
locale's decimal point is not a single character (e.g., the two-byte
U+066B of ar_EG.UTF-8 or fa_IR.UTF-8) and cannot be substituted in place.
The value strtod parsed up to that point is kept, as before this change.
Note that changing the locale in another thread *while* strtod runs is
undefined behavior of the C library, which this function cannot prevent.
*/
void convert_float_locale_aware()
{
const bool has_dot = decimal_point_position != std::string::npos;
char decimal_point = get_decimal_point();
for (;;)
{
const bool substitute = has_dot && decimal_point != '.';
if (substitute)
{
token_buffer[decimal_point_position] = static_cast<typename string_t::value_type>(decimal_point);
}
char* endptr = nullptr; // NOLINT(misc-const-correctness,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
strtof(value_float, token_buffer.data(), &endptr);
if (substitute)
{
// get_string() hands the token to the SAX interface with '.'
token_buffer[decimal_point_position] = '.';
}
if (JSON_HEDLEY_LIKELY(endptr == token_buffer.data() + token_buffer.size()))
{
return;
}
// retry only if the locale changed; otherwise, this would loop forever
const char current_decimal_point = get_decimal_point();
if (current_decimal_point == decimal_point)
{
return;
}
decimal_point = current_decimal_point;
}
}
/*!
@brief contiguous fast path for scanning a number
+2 -420
View File
@@ -3,7 +3,6 @@
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2021 The fast_float authors <https://github.com/fastfloat/fast_float>
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
@@ -11,16 +10,10 @@
#include <array> // array
#include <cfloat> // FLT_EVAL_METHOD
#include <clocale> // localeconv
#include <cstddef> // size_t
#include <cstdint> // int64_t, uint64_t
#include <cstdlib> // strtof, strtod, strtold
#include <cstring> // memcpy
#include <limits> // numeric_limits
#include <string> // string
#include <nlohmann/detail/bit_ops.hpp>
#include <nlohmann/detail/input/pow5_table.hpp>
#include <nlohmann/detail/macro_scope.hpp>
// std::from_chars lives in <charconv>, but being in C++17 mode does not
@@ -36,9 +29,8 @@
// This file contains the value-conversion helpers used by the lexer to turn an
// already-validated number token into a value, without the locale/errno
// overhead of std::strtoull/std::strtod where possible. They are free functions
// so the lexer stays focused on scanning (see lexer::convert_number()) and so
// that other parsers of JSON text can convert tokens exactly like it does.
// overhead of std::strtoull/std::strtod. They are free functions so the lexer
// stays focused on scanning; see lexer::convert_number().
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
@@ -301,415 +293,5 @@ bool parse_float_from_chars(const char* first, const char* last, FloatType& out)
#endif
}
/// whether the eight bytes of @a v (see read_eight_bytes()) are ASCII digits
/// (after fast_float's is_made_of_eight_digits_fast)
inline bool is_eight_digits(std::uint64_t v) noexcept
{
return ((v & 0xF0F0F0F0F0F0F0F0u) | (((v + 0x0606060606060606u) & 0xF0F0F0F0F0F0F0F0u) >> 4u)) == 0x3333333333333333u;
}
/// the value of the eight ASCII digits in @a v (see read_eight_bytes()), three
/// multiplications instead of eight (after simdjson and fast_float)
inline std::uint32_t parse_eight_digits(std::uint64_t v) noexcept
{
v = ((v & 0x0F0F0F0F0F0F0F0Fu) * 2561u) >> 8u;
v = ((v & 0x00FF00FF00FF00FFu) * 6553601u) >> 16u;
return static_cast<std::uint32_t>(((v & 0x0000FFFF0000FFFFu) * 42949672960001u) >> 32u);
}
/*!
@brief the double nearest to w * 10^q (Eisel-Lemire)
The algorithm of Daniel Lemire, "Number Parsing at a Gigabyte per Second"
(Software: Practice and Experience, 2021), after fast_float's compute_float
(used under the MIT license). With a 128-bit approximation of 5^q, the product
is always sufficient to round correctly for w with at most 19 digits (Noble
Mushtak and Daniel Lemire, "Fast number parsing without fallback", Software:
Practice and Experience, 2023). Only integer arithmetic is used, so the result
does not depend on the floating-point environment.
@param[in] q decimal exponent
@param[in] w significand, w != 0
@return the IEEE-754 bits of the positive result (0 for underflow, infinity
for overflow)
*/
inline std::uint64_t eisel_lemire(std::int64_t q, std::uint64_t w) noexcept
{
constexpr int mantissa_bits = 52;
constexpr std::uint64_t infinity = std::uint64_t{0x7FF} << mantissa_bits;
if (q < pow5_128_smallest_power)
{
return 0;
}
if (q > pow5_128_largest_power)
{
return infinity;
}
const int lz = count_leading_zeros(w);
w <<= static_cast<unsigned>(lz);
const auto index = static_cast<std::size_t>(2 * (q - pow5_128_smallest_power));
uint128_parts product = full_multiplication(w, pow5_128()[index]);
constexpr std::uint64_t precision_mask = 0xFFFFFFFFFFFFFFFFu >> (mantissa_bits + 3);
if ((product.high & precision_mask) == precision_mask)
{
// the lower bits may carry into the result: use the next 64 bits of 5^q
const uint128_parts second = full_multiplication(w, pow5_128()[index + 1]);
product.low += second.high;
if (second.high > product.low)
{
++product.high;
}
}
const auto upperbit = static_cast<int>(product.high >> 63u);
const int shift = upperbit + 64 - mantissa_bits - 3;
std::uint64_t mantissa = product.high >> static_cast<unsigned>(shift);
// floor(log2(10^q)) + 63 + 1023, with log2(10) ~ 217706 / 2^16
std::int64_t power2 = (((152170 + 65536) * q) >> 16) + 63 + upperbit - lz + 1023;
if (power2 <= 0) // subnormal
{
if (-power2 + 1 >= 64)
{
return 0;
}
mantissa >>= static_cast<unsigned>(-power2 + 1);
mantissa += (mantissa & 1u);
mantissa >>= 1u;
// rounding up may produce the smallest normal number
power2 = (mantissa < (std::uint64_t{1} << mantissa_bits)) ? 0 : 1;
return mantissa | (static_cast<std::uint64_t>(power2) << mantissa_bits);
}
// a value exactly between two doubles rounds to even; this can only
// happen for small |q|, where 5^q is exact
if (product.low <= 1 && q >= -4 && q <= 23 && (mantissa & 3u) == 1
&& (mantissa << static_cast<unsigned>(shift)) == product.high)
{
mantissa &= ~std::uint64_t{1};
}
mantissa += (mantissa & 1u);
mantissa >>= 1u;
if (mantissa >= (std::uint64_t{2} << mantissa_bits))
{
mantissa = std::uint64_t{1} << mantissa_bits;
++power2;
}
mantissa &= ~(std::uint64_t{1} << mantissa_bits);
if (power2 >= 0x7FF)
{
return infinity;
}
return mantissa | (static_cast<std::uint64_t>(power2) << mantissa_bits);
}
/*!
@brief parse a validated float token with the Eisel-Lemire algorithm
The significand is accumulated eight digits at a time where possible. A token
with more than 19 significant digits is truncated to w; the value then lies
in [w, w + 1) * 10^q, and it is only returned if both ends round to the same
double, which covers all but a few such tokens.
@param[in] first pointer to the first character of the token
@param[in] last pointer past the last character
@param[out] out the correctly rounded value on success (±infinity if it
overflows, like strtod)
@return true on success; false if strtod must decide
*/
inline bool parse_float_eisel_lemire(const char* first, const char* last, double& out) noexcept
{
const char* p = first;
const bool negative = (p != last && *p == '-');
if (negative)
{
++p;
}
std::uint64_t w = 0;
int digits = 0; // significant digits in w
std::int64_t exponent = 0;
bool truncated = false;
bool in_fraction = false;
for (;;)
{
// eight digits at a time, as long as they fit into w
while (w != 0 && digits <= 19 - 8 && last - p >= 8)
{
const std::uint64_t v = read_eight_bytes(p);
if (!is_eight_digits(v))
{
break;
}
w = (w * 100000000u) + parse_eight_digits(v);
digits += 8;
exponent -= in_fraction ? 8 : 0;
p += 8;
}
if (p == last)
{
break;
}
const char c = *p;
if (c >= '0' && c <= '9')
{
if (w == 0 && c == '0')
{
// leading zeros are not significant, but scale a fraction
exponent -= in_fraction ? 1 : 0;
}
else if (digits < 19)
{
w = (w * 10u) + static_cast<std::uint64_t>(c - '0');
++digits;
exponent -= in_fraction ? 1 : 0;
}
else
{
// dropped: the value lies between w and w + 1 (in units of
// the last kept digit) unless all dropped digits are zero
truncated = truncated || c != '0';
exponent += in_fraction ? 0 : 1;
}
++p;
}
else if (c == '.')
{
in_fraction = true;
++p;
}
else
{
break; // 'e' or 'E'
}
}
if (p != last)
{
++p; // 'e' or 'E'
bool exp_negative = false;
if (p != last && (*p == '-' || *p == '+'))
{
exp_negative = (*p == '-');
++p;
}
std::int64_t exp_value = 0;
for (; p != last; ++p)
{
// saturate: any exponent beyond this under- or overflows anyway
if (exp_value < 100000)
{
exp_value = (exp_value * 10) + (*p - '0');
}
}
exponent += exp_negative ? -exp_value : exp_value;
}
std::uint64_t bits = 0;
if (w != 0)
{
bits = eisel_lemire(exponent, w);
if (truncated && (w + 1 == 0 || eisel_lemire(exponent, w + 1) != bits))
{
return false;
}
}
bits |= negative ? (std::uint64_t{1} << 63u) : 0u;
static_assert(sizeof(double) == sizeof(std::uint64_t), "double must have 64 bits");
std::memcpy(&out, &bits, sizeof(out));
return true;
}
/// Eisel-Lemire is only implemented for `double`
template<typename FloatType>
bool parse_float_eisel_lemire(const char* /*first*/, const char* /*last*/, FloatType& /*out*/) noexcept
{
return false;
}
/*!
@brief check whether Clinger's fast path can still succeed for a float token
parse_float_fast() needs a significand below 2^53. A mantissa with 17 or
more significant digits is at least 10^16 and therefore always exceeds it,
so calling the fast path would walk the token one extra time only to
decline before strtod has to run anyway.
Significant digits are the mantissa's digits from the first nonzero one on;
the sign, the decimal point, leading zeros, and the exponent do not count.
The answer is derived from indices - the digits are not scanned again - so
this stays off the hot path of the number scanners.
@param[in] token the validated number token ('.' as decimal point)
@param[in] decimal_point_position index of the '.' in @a token, or
std::string::npos if there is none
@param[in] mantissa_end offset just past the last mantissa byte
@return false if parse_float_fast() is guaranteed to decline
*/
inline bool mantissa_fits_clinger(const char* token, std::size_t decimal_point_position, std::size_t mantissa_end) noexcept
{
// 10^16 already exceeds 2^53, so 17 digits can never fit
constexpr std::size_t limit = 17;
const std::size_t neg = (token[0] == '-') ? 1u : 0u;
const std::size_t has_dot = (decimal_point_position != std::string::npos) ? 1u : 0u;
// the JSON grammar restricts the integer part to "0" or [1-9][0-9]*, so
// a leading zero can only be a lone "0", which is not significant
const std::size_t lead_zero = (token[neg] == '0') ? 1u : 0u;
JSON_ASSERT(mantissa_end >= neg + has_dot + lead_zero);
std::size_t digits = mantissa_end - neg - has_dot - lead_zero;
if (JSON_HEDLEY_LIKELY(digits < limit))
{
return true;
}
// Only a number below 1 can carry further insignificant zeros, and only
// while the count stays at the limit does removing them change the
// answer - so this loop is skipped for all but a few tokens. The
// fraction is located through decimal_point_position rather than by
// searching '.'.
if (lead_zero != 0)
{
JSON_ASSERT(has_dot != 0); // an integer "0" cannot reach the limit
for (std::size_t i = decimal_point_position + 1;
digits >= limit && i < mantissa_end && token[i] == '0'; ++i)
{
--digits;
}
}
return digits < limit;
}
/*!
@brief convert a validated float token without the C library, if possible
Tries std::from_chars (when available), Clinger's exact fast path (double
only, skipped when it cannot succeed), and the Eisel-Lemire algorithm (double
only).
@param[in] first pointer to the first character of the token
@param[in] last pointer past the last character
@param[in] decimal_point_position index of the '.' in the token, or
std::string::npos if there is none
@param[in] mantissa_end offset just past the last mantissa byte (the
index of 'e'/'E', or the token length)
@param[out] value the converted value on success
@return true if the value was converted; false if convert_float_locale_aware()
must convert it
*/
template<typename FloatType>
bool convert_float_fast(const char* first, const char* last, std::size_t decimal_point_position,
std::size_t mantissa_end, FloatType& value) noexcept
{
if (parse_float_from_chars(first, last, value))
{
return true;
}
// Skipping a fast path that cannot succeed is lossless and saves a full
// extra pass over the token's bytes, which otherwise shows up on
// high-precision inputs such as canada.json
if (mantissa_fits_clinger(first, decimal_point_position, mantissa_end)
&& parse_float_fast(first, last, value))
{
return true;
}
return parse_float_eisel_lemire(first, last, value);
}
/// std::strtof, std::strtod, or std::strtold, chosen by the type of @a f
JSON_HEDLEY_NON_NULL(2)
inline void strtof_by_type(float& f, const char* str, char** endptr) noexcept
{
f = std::strtof(str, endptr);
}
/// std::strtof, std::strtod, or std::strtold, chosen by the type of @a f
JSON_HEDLEY_NON_NULL(2)
inline void strtof_by_type(double& f, const char* str, char** endptr) noexcept
{
f = std::strtod(str, endptr);
}
/// std::strtof, std::strtod, or std::strtold, chosen by the type of @a f
JSON_HEDLEY_NON_NULL(2)
inline void strtof_by_type(long double& f, const char* str, char** endptr) noexcept
{
f = std::strtold(str, endptr);
}
/// return the decimal point of the current locale
inline char get_decimal_point() noexcept
{
const auto* loc = localeconv();
JSON_ASSERT(loc != nullptr);
return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
}
/*!
@brief convert a validated float token with strtof/strtod/strtold
These functions expect the decimal point of the *current* locale, so it is
looked up right before the conversion instead of once when the lexer is
constructed: a locale change in between (by a parser callback, a SAX
handler, or another thread) must not truncate the value (#5198). The
token has been validated before, so if the conversion stops early and the
decimal point changed in the meantime, the locale changed between the
lookup and the call, and the conversion is repeated with the new decimal
point. If the decimal point did not change, a retry cannot succeed: the
locale's decimal point is not a single character (e.g., the two-byte
U+066B of ar_EG.UTF-8 or fa_IR.UTF-8) and cannot be substituted in place.
The value strtod parsed up to that point is kept, as before this change.
Note that changing the locale in another thread *while* strtod runs is
undefined behavior of the C library, which this function cannot prevent.
@param[in,out] token the token with '.' as decimal point; its
decimal point is replaced during the
conversion and restored afterwards
(data() must be NUL-terminated)
@param[in] decimal_point_position index of the '.' in @a token, or
std::string::npos if there is none
@param[out] value the converted value
*/
template<typename StringType, typename FloatType>
void convert_float_locale_aware(StringType& token, std::size_t decimal_point_position, FloatType& value)
{
const bool has_dot = decimal_point_position != std::string::npos;
char decimal_point = get_decimal_point();
for (;;)
{
const bool substitute = has_dot && decimal_point != '.';
if (substitute)
{
token[decimal_point_position] = static_cast<typename StringType::value_type>(decimal_point);
}
char* endptr = nullptr; // NOLINT(misc-const-correctness,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
strtof_by_type(value, token.data(), &endptr);
if (substitute)
{
// the caller hands the token on (e.g. to the SAX interface) with '.'
token[decimal_point_position] = '.';
}
if (JSON_HEDLEY_LIKELY(endptr == token.data() + token.size()))
{
return;
}
// retry only if the locale changed; otherwise, this would loop forever
const char current_decimal_point = get_decimal_point();
if (current_decimal_point == decimal_point)
{
return;
}
decimal_point = current_decimal_point;
}
}
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
@@ -1,371 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2021 The fast_float authors <https://github.com/fastfloat/fast_float>
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <array> // array
#include <cstdint> // int64_t, uint64_t
#include <nlohmann/detail/abi_macros.hpp>
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
/// the range of decimal exponents covered by pow5_128()
constexpr std::int64_t pow5_128_smallest_power = -342;
constexpr std::int64_t pow5_128_largest_power = 308;
/*!
@brief 128-bit approximations of 5^q for q in [-342, 308]
Entry q (at index 2 * (q + 342)) holds the most significant 128 bits of 5^q,
normalized so that the highest bit is set: for q >= 0 the truncated value, for
q < 0 the value rounded up. This is the table of fast_float (Daniel Lemire and
contributors, used under the MIT license), generated like its
script/table_generation.py; unit-class_lexer.cpp recomputes every entry.
*/
inline const std::array<std::uint64_t, 1302>& pow5_128() noexcept
{
static const std::array<std::uint64_t, 1302> table =
{
{
0xeef453d6923bd65au, 0x113faa2906a13b3fu, 0x9558b4661b6565f8u, 0x4ac7ca59a424c507u,
0xbaaee17fa23ebf76u, 0x5d79bcf00d2df649u, 0xe95a99df8ace6f53u, 0xf4d82c2c107973dcu,
0x91d8a02bb6c10594u, 0x79071b9b8a4be869u, 0xb64ec836a47146f9u, 0x9748e2826cdee284u,
0xe3e27a444d8d98b7u, 0xfd1b1b2308169b25u, 0x8e6d8c6ab0787f72u, 0xfe30f0f5e50e20f7u,
0xb208ef855c969f4fu, 0xbdbd2d335e51a935u, 0xde8b2b66b3bc4723u, 0xad2c788035e61382u,
0x8b16fb203055ac76u, 0x4c3bcb5021afcc31u, 0xaddcb9e83c6b1793u, 0xdf4abe242a1bbf3du,
0xd953e8624b85dd78u, 0xd71d6dad34a2af0du, 0x87d4713d6f33aa6bu, 0x8672648c40e5ad68u,
0xa9c98d8ccb009506u, 0x680efdaf511f18c2u, 0xd43bf0effdc0ba48u, 0x0212bd1b2566def2u,
0x84a57695fe98746du, 0x014bb630f7604b57u, 0xa5ced43b7e3e9188u, 0x419ea3bd35385e2du,
0xcf42894a5dce35eau, 0x52064cac828675b9u, 0x818995ce7aa0e1b2u, 0x7343efebd1940993u,
0xa1ebfb4219491a1fu, 0x1014ebe6c5f90bf8u, 0xca66fa129f9b60a6u, 0xd41a26e077774ef6u,
0xfd00b897478238d0u, 0x8920b098955522b4u, 0x9e20735e8cb16382u, 0x55b46e5f5d5535b0u,
0xc5a890362fddbc62u, 0xeb2189f734aa831du, 0xf712b443bbd52b7bu, 0xa5e9ec7501d523e4u,
0x9a6bb0aa55653b2du, 0x47b233c92125366eu, 0xc1069cd4eabe89f8u, 0x999ec0bb696e840au,
0xf148440a256e2c76u, 0xc00670ea43ca250du, 0x96cd2a865764dbcau, 0x380406926a5e5728u,
0xbc807527ed3e12bcu, 0xc605083704f5ecf2u, 0xeba09271e88d976bu, 0xf7864a44c633682eu,
0x93445b8731587ea3u, 0x7ab3ee6afbe0211du, 0xb8157268fdae9e4cu, 0x5960ea05bad82964u,
0xe61acf033d1a45dfu, 0x6fb92487298e33bdu, 0x8fd0c16206306babu, 0xa5d3b6d479f8e056u,
0xb3c4f1ba87bc8696u, 0x8f48a4899877186cu, 0xe0b62e2929aba83cu, 0x331acdabfe94de87u,
0x8c71dcd9ba0b4925u, 0x9ff0c08b7f1d0b14u, 0xaf8e5410288e1b6fu, 0x07ecf0ae5ee44dd9u,
0xdb71e91432b1a24au, 0xc9e82cd9f69d6150u, 0x892731ac9faf056eu, 0xbe311c083a225cd2u,
0xab70fe17c79ac6cau, 0x6dbd630a48aaf406u, 0xd64d3d9db981787du, 0x092cbbccdad5b108u,
0x85f0468293f0eb4eu, 0x25bbf56008c58ea5u, 0xa76c582338ed2621u, 0xaf2af2b80af6f24eu,
0xd1476e2c07286faau, 0x1af5af660db4aee1u, 0x82cca4db847945cau, 0x50d98d9fc890ed4du,
0xa37fce126597973cu, 0xe50ff107bab528a0u, 0xcc5fc196fefd7d0cu, 0x1e53ed49a96272c8u,
0xff77b1fcbebcdc4fu, 0x25e8e89c13bb0f7au, 0x9faacf3df73609b1u, 0x77b191618c54e9acu,
0xc795830d75038c1du, 0xd59df5b9ef6a2417u, 0xf97ae3d0d2446f25u, 0x4b0573286b44ad1du,
0x9becce62836ac577u, 0x4ee367f9430aec32u, 0xc2e801fb244576d5u, 0x229c41f793cda73fu,
0xf3a20279ed56d48au, 0x6b43527578c1110fu, 0x9845418c345644d6u, 0x830a13896b78aaa9u,
0xbe5691ef416bd60cu, 0x23cc986bc656d553u, 0xedec366b11c6cb8fu, 0x2cbfbe86b7ec8aa8u,
0x94b3a202eb1c3f39u, 0x7bf7d71432f3d6a9u, 0xb9e08a83a5e34f07u, 0xdaf5ccd93fb0cc53u,
0xe858ad248f5c22c9u, 0xd1b3400f8f9cff68u, 0x91376c36d99995beu, 0x23100809b9c21fa1u,
0xb58547448ffffb2du, 0xabd40a0c2832a78au, 0xe2e69915b3fff9f9u, 0x16c90c8f323f516cu,
0x8dd01fad907ffc3bu, 0xae3da7d97f6792e3u, 0xb1442798f49ffb4au, 0x99cd11cfdf41779cu,
0xdd95317f31c7fa1du, 0x40405643d711d583u, 0x8a7d3eef7f1cfc52u, 0x482835ea666b2572u,
0xad1c8eab5ee43b66u, 0xda3243650005eecfu, 0xd863b256369d4a40u, 0x90bed43e40076a82u,
0x873e4f75e2224e68u, 0x5a7744a6e804a291u, 0xa90de3535aaae202u, 0x711515d0a205cb36u,
0xd3515c2831559a83u, 0x0d5a5b44ca873e03u, 0x8412d9991ed58091u, 0xe858790afe9486c2u,
0xa5178fff668ae0b6u, 0x626e974dbe39a872u, 0xce5d73ff402d98e3u, 0xfb0a3d212dc8128fu,
0x80fa687f881c7f8eu, 0x7ce66634bc9d0b99u, 0xa139029f6a239f72u, 0x1c1fffc1ebc44e80u,
0xc987434744ac874eu, 0xa327ffb266b56220u, 0xfbe9141915d7a922u, 0x4bf1ff9f0062baa8u,
0x9d71ac8fada6c9b5u, 0x6f773fc3603db4a9u, 0xc4ce17b399107c22u, 0xcb550fb4384d21d3u,
0xf6019da07f549b2bu, 0x7e2a53a146606a48u, 0x99c102844f94e0fbu, 0x2eda7444cbfc426du,
0xc0314325637a1939u, 0xfa911155fefb5308u, 0xf03d93eebc589f88u, 0x793555ab7eba27cau,
0x96267c7535b763b5u, 0x4bc1558b2f3458deu, 0xbbb01b9283253ca2u, 0x9eb1aaedfb016f16u,
0xea9c227723ee8bcbu, 0x465e15a979c1cadcu, 0x92a1958a7675175fu, 0x0bfacd89ec191ec9u,
0xb749faed14125d36u, 0xcef980ec671f667bu, 0xe51c79a85916f484u, 0x82b7e12780e7401au,
0x8f31cc0937ae58d2u, 0xd1b2ecb8b0908810u, 0xb2fe3f0b8599ef07u, 0x861fa7e6dcb4aa15u,
0xdfbdcece67006ac9u, 0x67a791e093e1d49au, 0x8bd6a141006042bdu, 0xe0c8bb2c5c6d24e0u,
0xaecc49914078536du, 0x58fae9f773886e18u, 0xda7f5bf590966848u, 0xaf39a475506a899eu,
0x888f99797a5e012du, 0x6d8406c952429603u, 0xaab37fd7d8f58178u, 0xc8e5087ba6d33b83u,
0xd5605fcdcf32e1d6u, 0xfb1e4a9a90880a64u, 0x855c3be0a17fcd26u, 0x5cf2eea09a55067fu,
0xa6b34ad8c9dfc06fu, 0xf42faa48c0ea481eu, 0xd0601d8efc57b08bu, 0xf13b94daf124da26u,
0x823c12795db6ce57u, 0x76c53d08d6b70858u, 0xa2cb1717b52481edu, 0x54768c4b0c64ca6eu,
0xcb7ddcdda26da268u, 0xa9942f5dcf7dfd09u, 0xfe5d54150b090b02u, 0xd3f93b35435d7c4cu,
0x9efa548d26e5a6e1u, 0xc47bc5014a1a6dafu, 0xc6b8e9b0709f109au, 0x359ab6419ca1091bu,
0xf867241c8cc6d4c0u, 0xc30163d203c94b62u, 0x9b407691d7fc44f8u, 0x79e0de63425dcf1du,
0xc21094364dfb5636u, 0x985915fc12f542e4u, 0xf294b943e17a2bc4u, 0x3e6f5b7b17b2939du,
0x979cf3ca6cec5b5au, 0xa705992ceecf9c42u, 0xbd8430bd08277231u, 0x50c6ff782a838353u,
0xece53cec4a314ebdu, 0xa4f8bf5635246428u, 0x940f4613ae5ed136u, 0x871b7795e136be99u,
0xb913179899f68584u, 0x28e2557b59846e3fu, 0xe757dd7ec07426e5u, 0x331aeada2fe589cfu,
0x9096ea6f3848984fu, 0x3ff0d2c85def7621u, 0xb4bca50b065abe63u, 0x0fed077a756b53a9u,
0xe1ebce4dc7f16dfbu, 0xd3e8495912c62894u, 0x8d3360f09cf6e4bdu, 0x64712dd7abbbd95cu,
0xb080392cc4349decu, 0xbd8d794d96aacfb3u, 0xdca04777f541c567u, 0xecf0d7a0fc5583a0u,
0x89e42caaf9491b60u, 0xf41686c49db57244u, 0xac5d37d5b79b6239u, 0x311c2875c522ced5u,
0xd77485cb25823ac7u, 0x7d633293366b828bu, 0x86a8d39ef77164bcu, 0xae5dff9c02033197u,
0xa8530886b54dbdebu, 0xd9f57f830283fdfcu, 0xd267caa862a12d66u, 0xd072df63c324fd7bu,
0x8380dea93da4bc60u, 0x4247cb9e59f71e6du, 0xa46116538d0deb78u, 0x52d9be85f074e608u,
0xcd795be870516656u, 0x67902e276c921f8bu, 0x806bd9714632dff6u, 0x00ba1cd8a3db53b6u,
0xa086cfcd97bf97f3u, 0x80e8a40eccd228a4u, 0xc8a883c0fdaf7df0u, 0x6122cd128006b2cdu,
0xfad2a4b13d1b5d6cu, 0x796b805720085f81u, 0x9cc3a6eec6311a63u, 0xcbe3303674053bb0u,
0xc3f490aa77bd60fcu, 0xbedbfc4411068a9cu, 0xf4f1b4d515acb93bu, 0xee92fb5515482d44u,
0x991711052d8bf3c5u, 0x751bdd152d4d1c4au, 0xbf5cd54678eef0b6u, 0xd262d45a78a0635du,
0xef340a98172aace4u, 0x86fb897116c87c34u, 0x9580869f0e7aac0eu, 0xd45d35e6ae3d4da0u,
0xbae0a846d2195712u, 0x8974836059cca109u, 0xe998d258869facd7u, 0x2bd1a438703fc94bu,
0x91ff83775423cc06u, 0x7b6306a34627ddcfu, 0xb67f6455292cbf08u, 0x1a3bc84c17b1d542u,
0xe41f3d6a7377eecau, 0x20caba5f1d9e4a93u, 0x8e938662882af53eu, 0x547eb47b7282ee9cu,
0xb23867fb2a35b28du, 0xe99e619a4f23aa43u, 0xdec681f9f4c31f31u, 0x6405fa00e2ec94d4u,
0x8b3c113c38f9f37eu, 0xde83bc408dd3dd04u, 0xae0b158b4738705eu, 0x9624ab50b148d445u,
0xd98ddaee19068c76u, 0x3badd624dd9b0957u, 0x87f8a8d4cfa417c9u, 0xe54ca5d70a80e5d6u,
0xa9f6d30a038d1dbcu, 0x5e9fcf4ccd211f4cu, 0xd47487cc8470652bu, 0x7647c3200069671fu,
0x84c8d4dfd2c63f3bu, 0x29ecd9f40041e073u, 0xa5fb0a17c777cf09u, 0xf468107100525890u,
0xcf79cc9db955c2ccu, 0x7182148d4066eeb4u, 0x81ac1fe293d599bfu, 0xc6f14cd848405530u,
0xa21727db38cb002fu, 0xb8ada00e5a506a7cu, 0xca9cf1d206fdc03bu, 0xa6d90811f0e4851cu,
0xfd442e4688bd304au, 0x908f4a166d1da663u, 0x9e4a9cec15763e2eu, 0x9a598e4e043287feu,
0xc5dd44271ad3cdbau, 0x40eff1e1853f29fdu, 0xf7549530e188c128u, 0xd12bee59e68ef47cu,
0x9a94dd3e8cf578b9u, 0x82bb74f8301958ceu, 0xc13a148e3032d6e7u, 0xe36a52363c1faf01u,
0xf18899b1bc3f8ca1u, 0xdc44e6c3cb279ac1u, 0x96f5600f15a7b7e5u, 0x29ab103a5ef8c0b9u,
0xbcb2b812db11a5deu, 0x7415d448f6b6f0e7u, 0xebdf661791d60f56u, 0x111b495b3464ad21u,
0x936b9fcebb25c995u, 0xcab10dd900beec34u, 0xb84687c269ef3bfbu, 0x3d5d514f40eea742u,
0xe65829b3046b0afau, 0x0cb4a5a3112a5112u, 0x8ff71a0fe2c2e6dcu, 0x47f0e785eaba72abu,
0xb3f4e093db73a093u, 0x59ed216765690f56u, 0xe0f218b8d25088b8u, 0x306869c13ec3532cu,
0x8c974f7383725573u, 0x1e414218c73a13fbu, 0xafbd2350644eeacfu, 0xe5d1929ef90898fau,
0xdbac6c247d62a583u, 0xdf45f746b74abf39u, 0x894bc396ce5da772u, 0x6b8bba8c328eb783u,
0xab9eb47c81f5114fu, 0x066ea92f3f326564u, 0xd686619ba27255a2u, 0xc80a537b0efefebdu,
0x8613fd0145877585u, 0xbd06742ce95f5f36u, 0xa798fc4196e952e7u, 0x2c48113823b73704u,
0xd17f3b51fca3a7a0u, 0xf75a15862ca504c5u, 0x82ef85133de648c4u, 0x9a984d73dbe722fbu,
0xa3ab66580d5fdaf5u, 0xc13e60d0d2e0ebbau, 0xcc963fee10b7d1b3u, 0x318df905079926a8u,
0xffbbcfe994e5c61fu, 0xfdf17746497f7052u, 0x9fd561f1fd0f9bd3u, 0xfeb6ea8bedefa633u,
0xc7caba6e7c5382c8u, 0xfe64a52ee96b8fc0u, 0xf9bd690a1b68637bu, 0x3dfdce7aa3c673b0u,
0x9c1661a651213e2du, 0x06bea10ca65c084eu, 0xc31bfa0fe5698db8u, 0x486e494fcff30a62u,
0xf3e2f893dec3f126u, 0x5a89dba3c3efccfau, 0x986ddb5c6b3a76b7u, 0xf89629465a75e01cu,
0xbe89523386091465u, 0xf6bbb397f1135823u, 0xee2ba6c0678b597fu, 0x746aa07ded582e2cu,
0x94db483840b717efu, 0xa8c2a44eb4571cdcu, 0xba121a4650e4ddebu, 0x92f34d62616ce413u,
0xe896a0d7e51e1566u, 0x77b020baf9c81d17u, 0x915e2486ef32cd60u, 0x0ace1474dc1d122eu,
0xb5b5ada8aaff80b8u, 0x0d819992132456bau, 0xe3231912d5bf60e6u, 0x10e1fff697ed6c69u,
0x8df5efabc5979c8fu, 0xca8d3ffa1ef463c1u, 0xb1736b96b6fd83b3u, 0xbd308ff8a6b17cb2u,
0xddd0467c64bce4a0u, 0xac7cb3f6d05ddbdeu, 0x8aa22c0dbef60ee4u, 0x6bcdf07a423aa96bu,
0xad4ab7112eb3929du, 0x86c16c98d2c953c6u, 0xd89d64d57a607744u, 0xe871c7bf077ba8b7u,
0x87625f056c7c4a8bu, 0x11471cd764ad4972u, 0xa93af6c6c79b5d2du, 0xd598e40d3dd89bcfu,
0xd389b47879823479u, 0x4aff1d108d4ec2c3u, 0x843610cb4bf160cbu, 0xcedf722a585139bau,
0xa54394fe1eedb8feu, 0xc2974eb4ee658828u, 0xce947a3da6a9273eu, 0x733d226229feea32u,
0x811ccc668829b887u, 0x0806357d5a3f525fu, 0xa163ff802a3426a8u, 0xca07c2dcb0cf26f7u,
0xc9bcff6034c13052u, 0xfc89b393dd02f0b5u, 0xfc2c3f3841f17c67u, 0xbbac2078d443ace2u,
0x9d9ba7832936edc0u, 0xd54b944b84aa4c0du, 0xc5029163f384a931u, 0x0a9e795e65d4df11u,
0xf64335bcf065d37du, 0x4d4617b5ff4a16d5u, 0x99ea0196163fa42eu, 0x504bced1bf8e4e45u,
0xc06481fb9bcf8d39u, 0xe45ec2862f71e1d6u, 0xf07da27a82c37088u, 0x5d767327bb4e5a4cu,
0x964e858c91ba2655u, 0x3a6a07f8d510f86fu, 0xbbe226efb628afeau, 0x890489f70a55368bu,
0xeadab0aba3b2dbe5u, 0x2b45ac74ccea842eu, 0x92c8ae6b464fc96fu, 0x3b0b8bc90012929du,
0xb77ada0617e3bbcbu, 0x09ce6ebb40173744u, 0xe55990879ddcaabdu, 0xcc420a6a101d0515u,
0x8f57fa54c2a9eab6u, 0x9fa946824a12232du, 0xb32df8e9f3546564u, 0x47939822dc96abf9u,
0xdff9772470297ebdu, 0x59787e2b93bc56f7u, 0x8bfbea76c619ef36u, 0x57eb4edb3c55b65au,
0xaefae51477a06b03u, 0xede622920b6b23f1u, 0xdab99e59958885c4u, 0xe95fab368e45ecedu,
0x88b402f7fd75539bu, 0x11dbcb0218ebb414u, 0xaae103b5fcd2a881u, 0xd652bdc29f26a119u,
0xd59944a37c0752a2u, 0x4be76d3346f0495fu, 0x857fcae62d8493a5u, 0x6f70a4400c562ddbu,
0xa6dfbd9fb8e5b88eu, 0xcb4ccd500f6bb952u, 0xd097ad07a71f26b2u, 0x7e2000a41346a7a7u,
0x825ecc24c873782fu, 0x8ed400668c0c28c8u, 0xa2f67f2dfa90563bu, 0x728900802f0f32fau,
0xcbb41ef979346bcau, 0x4f2b40a03ad2ffb9u, 0xfea126b7d78186bcu, 0xe2f610c84987bfa8u,
0x9f24b832e6b0f436u, 0x0dd9ca7d2df4d7c9u, 0xc6ede63fa05d3143u, 0x91503d1c79720dbbu,
0xf8a95fcf88747d94u, 0x75a44c6397ce912au, 0x9b69dbe1b548ce7cu, 0xc986afbe3ee11abau,
0xc24452da229b021bu, 0xfbe85badce996168u, 0xf2d56790ab41c2a2u, 0xfae27299423fb9c3u,
0x97c560ba6b0919a5u, 0xdccd879fc967d41au, 0xbdb6b8e905cb600fu, 0x5400e987bbc1c920u,
0xed246723473e3813u, 0x290123e9aab23b68u, 0x9436c0760c86e30bu, 0xf9a0b6720aaf6521u,
0xb94470938fa89bceu, 0xf808e40e8d5b3e69u, 0xe7958cb87392c2c2u, 0xb60b1d1230b20e04u,
0x90bd77f3483bb9b9u, 0xb1c6f22b5e6f48c2u, 0xb4ecd5f01a4aa828u, 0x1e38aeb6360b1af3u,
0xe2280b6c20dd5232u, 0x25c6da63c38de1b0u, 0x8d590723948a535fu, 0x579c487e5a38ad0eu,
0xb0af48ec79ace837u, 0x2d835a9df0c6d851u, 0xdcdb1b2798182244u, 0xf8e431456cf88e65u,
0x8a08f0f8bf0f156bu, 0x1b8e9ecb641b58ffu, 0xac8b2d36eed2dac5u, 0xe272467e3d222f3fu,
0xd7adf884aa879177u, 0x5b0ed81dcc6abb0fu, 0x86ccbb52ea94baeau, 0x98e947129fc2b4e9u,
0xa87fea27a539e9a5u, 0x3f2398d747b36224u, 0xd29fe4b18e88640eu, 0x8eec7f0d19a03aadu,
0x83a3eeeef9153e89u, 0x1953cf68300424acu, 0xa48ceaaab75a8e2bu, 0x5fa8c3423c052dd7u,
0xcdb02555653131b6u, 0x3792f412cb06794du, 0x808e17555f3ebf11u, 0xe2bbd88bbee40bd0u,
0xa0b19d2ab70e6ed6u, 0x5b6aceaeae9d0ec4u, 0xc8de047564d20a8bu, 0xf245825a5a445275u,
0xfb158592be068d2eu, 0xeed6e2f0f0d56712u, 0x9ced737bb6c4183du, 0x55464dd69685606bu,
0xc428d05aa4751e4cu, 0xaa97e14c3c26b886u, 0xf53304714d9265dfu, 0xd53dd99f4b3066a8u,
0x993fe2c6d07b7fabu, 0xe546a8038efe4029u, 0xbf8fdb78849a5f96u, 0xde98520472bdd033u,
0xef73d256a5c0f77cu, 0x963e66858f6d4440u, 0x95a8637627989aadu, 0xdde7001379a44aa8u,
0xbb127c53b17ec159u, 0x5560c018580d5d52u, 0xe9d71b689dde71afu, 0xaab8f01e6e10b4a6u,
0x9226712162ab070du, 0xcab3961304ca70e8u, 0xb6b00d69bb55c8d1u, 0x3d607b97c5fd0d22u,
0xe45c10c42a2b3b05u, 0x8cb89a7db77c506au, 0x8eb98a7a9a5b04e3u, 0x77f3608e92adb242u,
0xb267ed1940f1c61cu, 0x55f038b237591ed3u, 0xdf01e85f912e37a3u, 0x6b6c46dec52f6688u,
0x8b61313bbabce2c6u, 0x2323ac4b3b3da015u, 0xae397d8aa96c1b77u, 0xabec975e0a0d081au,
0xd9c7dced53c72255u, 0x96e7bd358c904a21u, 0x881cea14545c7575u, 0x7e50d64177da2e54u,
0xaa242499697392d2u, 0xdde50bd1d5d0b9e9u, 0xd4ad2dbfc3d07787u, 0x955e4ec64b44e864u,
0x84ec3c97da624ab4u, 0xbd5af13bef0b113eu, 0xa6274bbdd0fadd61u, 0xecb1ad8aeacdd58eu,
0xcfb11ead453994bau, 0x67de18eda5814af2u, 0x81ceb32c4b43fcf4u, 0x80eacf948770ced7u,
0xa2425ff75e14fc31u, 0xa1258379a94d028du, 0xcad2f7f5359a3b3eu, 0x096ee45813a04330u,
0xfd87b5f28300ca0du, 0x8bca9d6e188853fcu, 0x9e74d1b791e07e48u, 0x775ea264cf55347eu,
0xc612062576589ddau, 0x95364afe032a819eu, 0xf79687aed3eec551u, 0x3a83ddbd83f52205u,
0x9abe14cd44753b52u, 0xc4926a9672793543u, 0xc16d9a0095928a27u, 0x75b7053c0f178294u,
0xf1c90080baf72cb1u, 0x5324c68b12dd6339u, 0x971da05074da7beeu, 0xd3f6fc16ebca5e04u,
0xbce5086492111aeau, 0x88f4bb1ca6bcf585u, 0xec1e4a7db69561a5u, 0x2b31e9e3d06c32e6u,
0x9392ee8e921d5d07u, 0x3aff322e62439fd0u, 0xb877aa3236a4b449u, 0x09befeb9fad487c3u,
0xe69594bec44de15bu, 0x4c2ebe687989a9b4u, 0x901d7cf73ab0acd9u, 0x0f9d37014bf60a11u,
0xb424dc35095cd80fu, 0x538484c19ef38c95u, 0xe12e13424bb40e13u, 0x2865a5f206b06fbau,
0x8cbccc096f5088cbu, 0xf93f87b7442e45d4u, 0xafebff0bcb24aafeu, 0xf78f69a51539d749u,
0xdbe6fecebdedd5beu, 0xb573440e5a884d1cu, 0x89705f4136b4a597u, 0x31680a88f8953031u,
0xabcc77118461cefcu, 0xfdc20d2b36ba7c3eu, 0xd6bf94d5e57a42bcu, 0x3d32907604691b4du,
0x8637bd05af6c69b5u, 0xa63f9a49c2c1b110u, 0xa7c5ac471b478423u, 0x0fcf80dc33721d54u,
0xd1b71758e219652bu, 0xd3c36113404ea4a9u, 0x83126e978d4fdf3bu, 0x645a1cac083126eau,
0xa3d70a3d70a3d70au, 0x3d70a3d70a3d70a4u, 0xccccccccccccccccu, 0xcccccccccccccccdu,
0x8000000000000000u, 0x0000000000000000u, 0xa000000000000000u, 0x0000000000000000u,
0xc800000000000000u, 0x0000000000000000u, 0xfa00000000000000u, 0x0000000000000000u,
0x9c40000000000000u, 0x0000000000000000u, 0xc350000000000000u, 0x0000000000000000u,
0xf424000000000000u, 0x0000000000000000u, 0x9896800000000000u, 0x0000000000000000u,
0xbebc200000000000u, 0x0000000000000000u, 0xee6b280000000000u, 0x0000000000000000u,
0x9502f90000000000u, 0x0000000000000000u, 0xba43b74000000000u, 0x0000000000000000u,
0xe8d4a51000000000u, 0x0000000000000000u, 0x9184e72a00000000u, 0x0000000000000000u,
0xb5e620f480000000u, 0x0000000000000000u, 0xe35fa931a0000000u, 0x0000000000000000u,
0x8e1bc9bf04000000u, 0x0000000000000000u, 0xb1a2bc2ec5000000u, 0x0000000000000000u,
0xde0b6b3a76400000u, 0x0000000000000000u, 0x8ac7230489e80000u, 0x0000000000000000u,
0xad78ebc5ac620000u, 0x0000000000000000u, 0xd8d726b7177a8000u, 0x0000000000000000u,
0x878678326eac9000u, 0x0000000000000000u, 0xa968163f0a57b400u, 0x0000000000000000u,
0xd3c21bcecceda100u, 0x0000000000000000u, 0x84595161401484a0u, 0x0000000000000000u,
0xa56fa5b99019a5c8u, 0x0000000000000000u, 0xcecb8f27f4200f3au, 0x0000000000000000u,
0x813f3978f8940984u, 0x4000000000000000u, 0xa18f07d736b90be5u, 0x5000000000000000u,
0xc9f2c9cd04674edeu, 0xa400000000000000u, 0xfc6f7c4045812296u, 0x4d00000000000000u,
0x9dc5ada82b70b59du, 0xf020000000000000u, 0xc5371912364ce305u, 0x6c28000000000000u,
0xf684df56c3e01bc6u, 0xc732000000000000u, 0x9a130b963a6c115cu, 0x3c7f400000000000u,
0xc097ce7bc90715b3u, 0x4b9f100000000000u, 0xf0bdc21abb48db20u, 0x1e86d40000000000u,
0x96769950b50d88f4u, 0x1314448000000000u, 0xbc143fa4e250eb31u, 0x17d955a000000000u,
0xeb194f8e1ae525fdu, 0x5dcfab0800000000u, 0x92efd1b8d0cf37beu, 0x5aa1cae500000000u,
0xb7abc627050305adu, 0xf14a3d9e40000000u, 0xe596b7b0c643c719u, 0x6d9ccd05d0000000u,
0x8f7e32ce7bea5c6fu, 0xe4820023a2000000u, 0xb35dbf821ae4f38bu, 0xdda2802c8a800000u,
0xe0352f62a19e306eu, 0xd50b2037ad200000u, 0x8c213d9da502de45u, 0x4526f422cc340000u,
0xaf298d050e4395d6u, 0x9670b12b7f410000u, 0xdaf3f04651d47b4cu, 0x3c0cdd765f114000u,
0x88d8762bf324cd0fu, 0xa5880a69fb6ac800u, 0xab0e93b6efee0053u, 0x8eea0d047a457a00u,
0xd5d238a4abe98068u, 0x72a4904598d6d880u, 0x85a36366eb71f041u, 0x47a6da2b7f864750u,
0xa70c3c40a64e6c51u, 0x999090b65f67d924u, 0xd0cf4b50cfe20765u, 0xfff4b4e3f741cf6du,
0x82818f1281ed449fu, 0xbff8f10e7a8921a4u, 0xa321f2d7226895c7u, 0xaff72d52192b6a0du,
0xcbea6f8ceb02bb39u, 0x9bf4f8a69f764490u, 0xfee50b7025c36a08u, 0x02f236d04753d5b4u,
0x9f4f2726179a2245u, 0x01d762422c946590u, 0xc722f0ef9d80aad6u, 0x424d3ad2b7b97ef5u,
0xf8ebad2b84e0d58bu, 0xd2e0898765a7deb2u, 0x9b934c3b330c8577u, 0x63cc55f49f88eb2fu,
0xc2781f49ffcfa6d5u, 0x3cbf6b71c76b25fbu, 0xf316271c7fc3908au, 0x8bef464e3945ef7au,
0x97edd871cfda3a56u, 0x97758bf0e3cbb5acu, 0xbde94e8e43d0c8ecu, 0x3d52eeed1cbea317u,
0xed63a231d4c4fb27u, 0x4ca7aaa863ee4bddu, 0x945e455f24fb1cf8u, 0x8fe8caa93e74ef6au,
0xb975d6b6ee39e436u, 0xb3e2fd538e122b44u, 0xe7d34c64a9c85d44u, 0x60dbbca87196b616u,
0x90e40fbeea1d3a4au, 0xbc8955e946fe31cdu, 0xb51d13aea4a488ddu, 0x6babab6398bdbe41u,
0xe264589a4dcdab14u, 0xc696963c7eed2dd1u, 0x8d7eb76070a08aecu, 0xfc1e1de5cf543ca2u,
0xb0de65388cc8ada8u, 0x3b25a55f43294bcbu, 0xdd15fe86affad912u, 0x49ef0eb713f39ebeu,
0x8a2dbf142dfcc7abu, 0x6e3569326c784337u, 0xacb92ed9397bf996u, 0x49c2c37f07965404u,
0xd7e77a8f87daf7fbu, 0xdc33745ec97be906u, 0x86f0ac99b4e8dafdu, 0x69a028bb3ded71a3u,
0xa8acd7c0222311bcu, 0xc40832ea0d68ce0cu, 0xd2d80db02aabd62bu, 0xf50a3fa490c30190u,
0x83c7088e1aab65dbu, 0x792667c6da79e0fau, 0xa4b8cab1a1563f52u, 0x577001b891185938u,
0xcde6fd5e09abcf26u, 0xed4c0226b55e6f86u, 0x80b05e5ac60b6178u, 0x544f8158315b05b4u,
0xa0dc75f1778e39d6u, 0x696361ae3db1c721u, 0xc913936dd571c84cu, 0x03bc3a19cd1e38e9u,
0xfb5878494ace3a5fu, 0x04ab48a04065c723u, 0x9d174b2dcec0e47bu, 0x62eb0d64283f9c76u,
0xc45d1df942711d9au, 0x3ba5d0bd324f8394u, 0xf5746577930d6500u, 0xca8f44ec7ee36479u,
0x9968bf6abbe85f20u, 0x7e998b13cf4e1ecbu, 0xbfc2ef456ae276e8u, 0x9e3fedd8c321a67eu,
0xefb3ab16c59b14a2u, 0xc5cfe94ef3ea101eu, 0x95d04aee3b80ece5u, 0xbba1f1d158724a12u,
0xbb445da9ca61281fu, 0x2a8a6e45ae8edc97u, 0xea1575143cf97226u, 0xf52d09d71a3293bdu,
0x924d692ca61be758u, 0x593c2626705f9c56u, 0xb6e0c377cfa2e12eu, 0x6f8b2fb00c77836cu,
0xe498f455c38b997au, 0x0b6dfb9c0f956447u, 0x8edf98b59a373fecu, 0x4724bd4189bd5eacu,
0xb2977ee300c50fe7u, 0x58edec91ec2cb657u, 0xdf3d5e9bc0f653e1u, 0x2f2967b66737e3edu,
0x8b865b215899f46cu, 0xbd79e0d20082ee74u, 0xae67f1e9aec07187u, 0xecd8590680a3aa11u,
0xda01ee641a708de9u, 0xe80e6f4820cc9495u, 0x884134fe908658b2u, 0x3109058d147fdcddu,
0xaa51823e34a7eedeu, 0xbd4b46f0599fd415u, 0xd4e5e2cdc1d1ea96u, 0x6c9e18ac7007c91au,
0x850fadc09923329eu, 0x03e2cf6bc604ddb0u, 0xa6539930bf6bff45u, 0x84db8346b786151cu,
0xcfe87f7cef46ff16u, 0xe612641865679a63u, 0x81f14fae158c5f6eu, 0x4fcb7e8f3f60c07eu,
0xa26da3999aef7749u, 0xe3be5e330f38f09du, 0xcb090c8001ab551cu, 0x5cadf5bfd3072cc5u,
0xfdcb4fa002162a63u, 0x73d9732fc7c8f7f6u, 0x9e9f11c4014dda7eu, 0x2867e7fddcdd9afau,
0xc646d63501a1511du, 0xb281e1fd541501b8u, 0xf7d88bc24209a565u, 0x1f225a7ca91a4226u,
0x9ae757596946075fu, 0x3375788de9b06958u, 0xc1a12d2fc3978937u, 0x0052d6b1641c83aeu,
0xf209787bb47d6b84u, 0xc0678c5dbd23a49au, 0x9745eb4d50ce6332u, 0xf840b7ba963646e0u,
0xbd176620a501fbffu, 0xb650e5a93bc3d898u, 0xec5d3fa8ce427affu, 0xa3e51f138ab4cebeu,
0x93ba47c980e98cdfu, 0xc66f336c36b10137u, 0xb8a8d9bbe123f017u, 0xb80b0047445d4184u,
0xe6d3102ad96cec1du, 0xa60dc059157491e5u, 0x9043ea1ac7e41392u, 0x87c89837ad68db2fu,
0xb454e4a179dd1877u, 0x29babe4598c311fbu, 0xe16a1dc9d8545e94u, 0xf4296dd6fef3d67au,
0x8ce2529e2734bb1du, 0x1899e4a65f58660cu, 0xb01ae745b101e9e4u, 0x5ec05dcff72e7f8fu,
0xdc21a1171d42645du, 0x76707543f4fa1f73u, 0x899504ae72497ebau, 0x6a06494a791c53a8u,
0xabfa45da0edbde69u, 0x0487db9d17636892u, 0xd6f8d7509292d603u, 0x45a9d2845d3c42b6u,
0x865b86925b9bc5c2u, 0x0b8a2392ba45a9b2u, 0xa7f26836f282b732u, 0x8e6cac7768d7141eu,
0xd1ef0244af2364ffu, 0x3207d795430cd926u, 0x8335616aed761f1fu, 0x7f44e6bd49e807b8u,
0xa402b9c5a8d3a6e7u, 0x5f16206c9c6209a6u, 0xcd036837130890a1u, 0x36dba887c37a8c0fu,
0x802221226be55a64u, 0xc2494954da2c9789u, 0xa02aa96b06deb0fdu, 0xf2db9baa10b7bd6cu,
0xc83553c5c8965d3du, 0x6f92829494e5acc7u, 0xfa42a8b73abbf48cu, 0xcb772339ba1f17f9u,
0x9c69a97284b578d7u, 0xff2a760414536efbu, 0xc38413cf25e2d70du, 0xfef5138519684abau,
0xf46518c2ef5b8cd1u, 0x7eb258665fc25d69u, 0x98bf2f79d5993802u, 0xef2f773ffbd97a61u,
0xbeeefb584aff8603u, 0xaafb550ffacfd8fau, 0xeeaaba2e5dbf6784u, 0x95ba2a53f983cf38u,
0x952ab45cfa97a0b2u, 0xdd945a747bf26183u, 0xba756174393d88dfu, 0x94f971119aeef9e4u,
0xe912b9d1478ceb17u, 0x7a37cd5601aab85du, 0x91abb422ccb812eeu, 0xac62e055c10ab33au,
0xb616a12b7fe617aau, 0x577b986b314d6009u, 0xe39c49765fdf9d94u, 0xed5a7e85fda0b80bu,
0x8e41ade9fbebc27du, 0x14588f13be847307u, 0xb1d219647ae6b31cu, 0x596eb2d8ae258fc8u,
0xde469fbd99a05fe3u, 0x6fca5f8ed9aef3bbu, 0x8aec23d680043beeu, 0x25de7bb9480d5854u,
0xada72ccc20054ae9u, 0xaf561aa79a10ae6au, 0xd910f7ff28069da4u, 0x1b2ba1518094da04u,
0x87aa9aff79042286u, 0x90fb44d2f05d0842u, 0xa99541bf57452b28u, 0x353a1607ac744a53u,
0xd3fa922f2d1675f2u, 0x42889b8997915ce8u, 0x847c9b5d7c2e09b7u, 0x69956135febada11u,
0xa59bc234db398c25u, 0x43fab9837e699095u, 0xcf02b2c21207ef2eu, 0x94f967e45e03f4bbu,
0x8161afb94b44f57du, 0x1d1be0eebac278f5u, 0xa1ba1ba79e1632dcu, 0x6462d92a69731732u,
0xca28a291859bbf93u, 0x7d7b8f7503cfdcfeu, 0xfcb2cb35e702af78u, 0x5cda735244c3d43eu,
0x9defbf01b061adabu, 0x3a0888136afa64a7u, 0xc56baec21c7a1916u, 0x088aaa1845b8fdd0u,
0xf6c69a72a3989f5bu, 0x8aad549e57273d45u, 0x9a3c2087a63f6399u, 0x36ac54e2f678864bu,
0xc0cb28a98fcf3c7fu, 0x84576a1bb416a7ddu, 0xf0fdf2d3f3c30b9fu, 0x656d44a2a11c51d5u,
0x969eb7c47859e743u, 0x9f644ae5a4b1b325u, 0xbc4665b596706114u, 0x873d5d9f0dde1feeu,
0xeb57ff22fc0c7959u, 0xa90cb506d155a7eau, 0x9316ff75dd87cbd8u, 0x09a7f12442d588f2u,
0xb7dcbf5354e9beceu, 0x0c11ed6d538aeb2fu, 0xe5d3ef282a242e81u, 0x8f1668c8a86da5fau,
0x8fa475791a569d10u, 0xf96e017d694487bcu, 0xb38d92d760ec4455u, 0x37c981dcc395a9acu,
0xe070f78d3927556au, 0x85bbe253f47b1417u, 0x8c469ab843b89562u, 0x93956d7478ccec8eu,
0xaf58416654a6babbu, 0x387ac8d1970027b2u, 0xdb2e51bfe9d0696au, 0x06997b05fcc0319eu,
0x88fcf317f22241e2u, 0x441fece3bdf81f03u, 0xab3c2fddeeaad25au, 0xd527e81cad7626c3u,
0xd60b3bd56a5586f1u, 0x8a71e223d8d3b074u, 0x85c7056562757456u, 0xf6872d5667844e49u,
0xa738c6bebb12d16cu, 0xb428f8ac016561dbu, 0xd106f86e69d785c7u, 0xe13336d701beba52u,
0x82a45b450226b39cu, 0xecc0024661173473u, 0xa34d721642b06084u, 0x27f002d7f95d0190u,
0xcc20ce9bd35c78a5u, 0x31ec038df7b441f4u, 0xff290242c83396ceu, 0x7e67047175a15271u,
0x9f79a169bd203e41u, 0x0f0062c6e984d386u, 0xc75809c42c684dd1u, 0x52c07b78a3e60868u,
0xf92e0c3537826145u, 0xa7709a56ccdf8a82u, 0x9bbcc7a142b17ccbu, 0x88a66076400bb691u,
0xc2abf989935ddbfeu, 0x6acff893d00ea435u, 0xf356f7ebf83552feu, 0x0583f6b8c4124d43u,
0x98165af37b2153deu, 0xc3727a337a8b704au, 0xbe1bf1b059e9a8d6u, 0x744f18c0592e4c5cu,
0xeda2ee1c7064130cu, 0x1162def06f79df73u, 0x9485d4d1c63e8be7u, 0x8addcb5645ac2ba8u,
0xb9a74a0637ce2ee1u, 0x6d953e2bd7173692u, 0xe8111c87c5c1ba99u, 0xc8fa8db6ccdd0437u,
0x910ab1d4db9914a0u, 0x1d9c9892400a22a2u, 0xb54d5e4a127f59c8u, 0x2503beb6d00cab4bu,
0xe2a0b5dc971f303au, 0x2e44ae64840fd61du, 0x8da471a9de737e24u, 0x5ceaecfed289e5d2u,
0xb10d8e1456105dadu, 0x7425a83e872c5f47u, 0xdd50f1996b947518u, 0xd12f124e28f77719u,
0x8a5296ffe33cc92fu, 0x82bd6b70d99aaa6fu, 0xace73cbfdc0bfb7bu, 0x636cc64d1001550bu,
0xd8210befd30efa5au, 0x3c47f7e05401aa4eu, 0x8714a775e3e95c78u, 0x65acfaec34810a71u,
0xa8d9d1535ce3b396u, 0x7f1839a741a14d0du, 0xd31045a8341ca07cu, 0x1ede48111209a050u,
0x83ea2b892091e44du, 0x934aed0aab460432u, 0xa4e4b66b68b65d60u, 0xf81da84d5617853fu,
0xce1de40642e3f4b9u, 0x36251260ab9d668eu, 0x80d2ae83e9ce78f3u, 0xc1d72b7c6b426019u,
0xa1075a24e4421730u, 0xb24cf65b8612f81fu, 0xc94930ae1d529cfcu, 0xdee033f26797b627u,
0xfb9b7cd9a4a7443cu, 0x169840ef017da3b1u, 0x9d412e0806e88aa5u, 0x8e1f289560ee864eu,
0xc491798a08a2ad4eu, 0xf1a6f2bab92a27e2u, 0xf5b5d7ec8acb58a2u, 0xae10af696774b1dbu,
0x9991a6f3d6bf1765u, 0xacca6da1e0a8ef29u, 0xbff610b0cc6edd3fu, 0x17fd090a58d32af3u,
0xeff394dcff8a948eu, 0xddfc4b4cef07f5b0u, 0x95f83d0a1fb69cd9u, 0x4abdaf101564f98eu,
0xbb764c4ca7a4440fu, 0x9d6d1ad41abe37f1u, 0xea53df5fd18d5513u, 0x84c86189216dc5edu,
0x92746b9be2f8552cu, 0x32fd3cf5b4e49bb4u, 0xb7118682dbb66a77u, 0x3fbc8c33221dc2a1u,
0xe4d5e82392a40515u, 0x0fabaf3feaa5334au, 0x8f05b1163ba6832du, 0x29cb4d87f2a7400eu,
0xb2c71d5bca9023f8u, 0x743e20e9ef511012u, 0xdf78e4b2bd342cf6u, 0x914da9246b255416u,
0x8bab8eefb6409c1au, 0x1ad089b6c2f7548eu, 0xae9672aba3d0c320u, 0xa184ac2473b529b1u,
0xda3c0f568cc4f3e8u, 0xc9e5d72d90a2741eu, 0x8865899617fb1871u, 0x7e2fa67c7a658892u,
0xaa7eebfb9df9de8du, 0xddbb901b98feeab7u, 0xd51ea6fa85785631u, 0x552a74227f3ea565u,
0x8533285c936b35deu, 0xd53a88958f87275fu, 0xa67ff273b8460356u, 0x8a892abaf368f137u,
0xd01fef10a657842cu, 0x2d2b7569b0432d85u, 0x8213f56a67f6b29bu, 0x9c3b29620e29fc73u,
0xa298f2c501f45f42u, 0x8349f3ba91b47b8fu, 0xcb3f2f7642717713u, 0x241c70a936219a73u,
0xfe0efb53d30dd4d7u, 0xed238cd383aa0110u, 0x9ec95d1463e8a506u, 0xf4363804324a40aau,
0xc67bb4597ce2ce48u, 0xb143c6053edcd0d5u, 0xf81aa16fdc1b81dau, 0xdd94b7868e94050au,
0x9b10a4e5e9913128u, 0xca7cf2b4191c8326u, 0xc1d4ce1f63f57d72u, 0xfd1c2f611f63a3f0u,
0xf24a01a73cf2dccfu, 0xbc633b39673c8cecu, 0x976e41088617ca01u, 0xd5be0503e085d813u,
0xbd49d14aa79dbc82u, 0x4b2d8644d8a74e18u, 0xec9c459d51852ba2u, 0xddf8e7d60ed1219eu,
0x93e1ab8252f33b45u, 0xcabb90e5c942b503u, 0xb8da1662e7b00a17u, 0x3d6a751f3b936243u,
0xe7109bfba19c0c9du, 0x0cc512670a783ad4u, 0x906a617d450187e2u, 0x27fb2b80668b24c5u,
0xb484f9dc9641e9dau, 0xb1f9f660802dedf6u, 0xe1a63853bbd26451u, 0x5e7873f8a0396973u,
0x8d07e33455637eb2u, 0xdb0b487b6423e1e8u, 0xb049dc016abc5e5fu, 0x91ce1a9a3d2cda62u,
0xdc5c5301c56b75f7u, 0x7641a140cc7810fbu, 0x89b9b3e11b6329bau, 0xa9e904c87fcb0a9du,
0xac2820d9623bf429u, 0x546345fa9fbdcd44u, 0xd732290fbacaf133u, 0xa97c177947ad4095u,
0x867f59a9d4bed6c0u, 0x49ed8eabcccc485du, 0xa81f301449ee8c70u, 0x5c68f256bfff5a74u,
0xd226fc195c6a2f8cu, 0x73832eec6fff3111u, 0x83585d8fd9c25db7u, 0xc831fd53c5ff7eabu,
0xa42e74f3d032f525u, 0xba3e7ca8b77f5e55u, 0xcd3a1230c43fb26fu, 0x28ce1bd2e55f35ebu,
0x80444b5e7aa7cf85u, 0x7980d163cf5b81b3u, 0xa0555e361951c366u, 0xd7e105bcc332621fu,
0xc86ab5c39fa63440u, 0x8dd9472bf3fefaa7u, 0xfa856334878fc150u, 0xb14f98f6f0feb951u,
0x9c935e00d4b9d8d2u, 0x6ed1bf9a569f33d3u, 0xc3b8358109e84f07u, 0x0a862f80ec4700c8u,
0xf4a642e14c6262c8u, 0xcd27bb612758c0fau, 0x98e7e9cccfbd7dbdu, 0x8038d51cb897789cu,
0xbf21e44003acdd2cu, 0xe0470a63e6bd56c3u, 0xeeea5d5004981478u, 0x1858ccfce06cac74u,
0x95527a5202df0ccbu, 0x0f37801e0c43ebc8u, 0xbaa718e68396cffdu, 0xd30560258f54e6bau,
0xe950df20247c83fdu, 0x47c6b82ef32a2069u, 0x91d28b7416cdd27eu, 0x4cdc331d57fa5441u,
0xb6472e511c81471du, 0xe0133fe4adf8e952u, 0xe3d8f9e563a198e5u, 0x58180fddd97723a6u,
0x8e679c2f5e44ff8fu, 0x570f09eaa7ea7648u,
}
};
return table;
}
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
+29 -70
View File
@@ -8,12 +8,10 @@
#pragma once
#include <array> // array
#include <cstddef> // size_t
#include <cstdint> // uint64_t, uint8_t
#include <cstdint> // uint64_t
#include <cstring> // memcpy
#include <nlohmann/detail/bit_ops.hpp>
#include <nlohmann/detail/macro_scope.hpp>
// Optional SIMD backend for bulk UTF-8 validation. This is an opt-in external
@@ -71,12 +69,18 @@ inline std::size_t find_string_special(const unsigned char* data, std::size_t n)
std::size_t i = 0;
for (; i + 8 <= n; i += 8)
{
const std::uint64_t special = swar_string_special(read_eight_bytes(data + i));
if (special != 0)
std::uint64_t word = 0;
std::memcpy(&word, data + i, sizeof(word));
if (swar_string_special(word) != 0)
{
// the lowest flagged byte is the first special one: the borrows of
// the subtractions can only flag bytes above a true hit
return i + (static_cast<std::size_t>(count_trailing_zeros(special)) / 8);
// a special byte is in this word; locate it (endian-agnostic)
for (std::size_t j = 0; j < 8; ++j)
{
if (is_string_special(data[i + j]))
{
return i + j;
}
}
}
}
for (; i < n; ++i)
@@ -110,7 +114,8 @@ inline std::size_t find_ascii_copyable_run(const unsigned char* data, std::size_
std::size_t i = 0;
for (; i + 8 <= n; i += 8)
{
const std::uint64_t v = read_eight_bytes(data + i);
std::uint64_t v = 0;
std::memcpy(&v, data + i, sizeof(v));
const std::uint64_t q = v ^ 0x2222222222222222ull; // '"' (0x22)
const std::uint64_t b = v ^ 0x5C5C5C5C5C5C5C5Cull; // '\\' (0x5C)
const std::uint64_t d = v ^ 0x7F7F7F7F7F7F7F7Full; // DEL (0x7F)
@@ -121,9 +126,7 @@ inline std::size_t find_ascii_copyable_run(const unsigned char* data, std::size_
| (v & high); // >= 0x80
if (stop != 0)
{
// the lowest flagged byte is the first one to stop at (see
// find_string_special())
return i + (static_cast<std::size_t>(count_trailing_zeros(stop)) / 8);
break;
}
}
for (; i < n; ++i)
@@ -250,18 +253,12 @@ inline std::size_t scalar_string_bulk_run(const unsigned char* data, std::size_t
{
break; // end of buffer, or a quote/escape/control byte
}
// a run of multi-byte sequences (e.g. CJK text) is validated sequence
// by sequence without searching for the next special byte in between
do
const std::size_t seq = validate_one_utf8(data + pos, n - pos);
if (seq == 0)
{
const std::size_t seq = validate_one_utf8(data + pos, n - pos);
if (seq == 0)
{
return pos; // ill-formed or truncated: let the byte path diagnose it
}
pos += seq;
break; // ill-formed or truncated: let the byte path diagnose it
}
while (pos < n && data[pos] >= 0x80u);
pos += seq;
}
return pos;
}
@@ -276,7 +273,8 @@ inline std::size_t find_string_delimiter(const unsigned char* data, std::size_t
std::size_t i = 0;
for (; i + 8 <= n; i += 8)
{
const std::uint64_t v = read_eight_bytes(data + i);
std::uint64_t v = 0;
std::memcpy(&v, data + i, sizeof(v));
const std::uint64_t q = v ^ 0x2222222222222222ull;
const std::uint64_t b = v ^ 0x5C5C5C5C5C5C5C5Cull;
const std::uint64_t hit = ((q - ones) & ~q & high)
@@ -284,8 +282,14 @@ inline std::size_t find_string_delimiter(const unsigned char* data, std::size_t
| ((v - 0x2020202020202020ull) & ~v & high);
if (hit != 0)
{
// the lowest flagged byte is the first delimiter (see find_string_special())
return i + (static_cast<std::size_t>(count_trailing_zeros(hit)) / 8);
for (std::size_t j = 0; j < 8; ++j)
{
const unsigned char c = data[i + j];
if (c == '\"' || c == '\\' || c < 0x20u)
{
return i + j;
}
}
}
}
for (; i < n; ++i)
@@ -316,50 +320,5 @@ inline std::size_t string_bulk_run(const unsigned char* data, std::size_t n) noe
return scalar_string_bulk_run(data, n);
}
// Decode the 4 hex digits at [data, data+4) - the digits following a `\u`
// escape - into a codepoint 0x0000..0xFFFF via one table lookup per byte
// (after yyjson's read_hex_u16), or return -1 if any of the 4 bytes is not a
// hex digit ('0'..'9', 'A'..'F', 'a'..'f'). The caller must already have
// checked that 4 bytes are available; used by lexer::get_codepoint()'s
// contiguous fast path. On -1 it falls back to the byte-at-a-time loop, which
// stops at the first invalid digit, so the reported error and position are
// unaffected by this fast path.
inline int hex_codepoint(const unsigned char* data) noexcept
{
static const std::array<std::uint8_t, 256> hex_digit_table = // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
{
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 00..0F
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 10..1F
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 20..2F
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 30..3F ('0'..'9')
0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 40..4F ('A'..'F')
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 50..5F
0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 60..6F ('a'..'f')
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 70..7F
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 80..8F
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 90..9F
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // A0..AF
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // B0..BF
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C0..CF
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // D0..DF
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // E0..EF
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF // F0..FF
}
};
const std::uint8_t d0 = hex_digit_table[data[0]];
const std::uint8_t d1 = hex_digit_table[data[1]];
const std::uint8_t d2 = hex_digit_table[data[2]];
const std::uint8_t d3 = hex_digit_table[data[3]];
// every valid digit is <= 0xF; the combined OR only exceeds it if at
// least one of the four bytes was not a hex digit (looked up as 0xFF)
if ((d0 | d1 | d2 | d3) > 0x0F)
{
return -1;
}
return (d0 << 12) | (d1 << 8) | (d2 << 4) | d3;
}
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
+4
View File
@@ -916,6 +916,10 @@ void templated_json_throw(ExceptionType exception)
#define JSON_DISABLE_ENUM_SERIALIZATION 0
#endif
#ifndef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 0
#endif
#ifndef JSON_USE_GLOBAL_UDLS
#define JSON_USE_GLOBAL_UDLS 1
#endif
@@ -25,6 +25,7 @@
#undef JSON_INLINE_VARIABLE
#undef JSON_NO_UNIQUE_ADDRESS
#undef JSON_DISABLE_ENUM_SERIALIZATION
#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#undef JSON_USE_GLOBAL_UDLS
#ifndef JSON_TEST_KEEP_MACROS
@@ -636,6 +636,18 @@ template<typename BasicJsonType, typename CompatibleType>
struct is_compatible_type
: is_compatible_type_impl<BasicJsonType, CompatibleType> {};
// a one-element std::tuple holding a reference to BasicJsonType, as created by
// std::forward_as_tuple(j); see JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple : std::false_type {};
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple<BasicJsonType, std::tuple<T>>
{
static constexpr bool value =
std::is_reference<T>::value && std::is_same<uncvref_t<T>, BasicJsonType>::value;
};
template<typename BasicJsonType, typename CompatibleArrayType>
struct is_compatible_binary_type
{
File diff suppressed because it is too large Load Diff
@@ -1,130 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <array> // array
#include <cstddef> // size_t
#include <cstring> // memcpy
#include <new> // operator new, placement new
#include <string> // string
#include <nlohmann/json.hpp>
#include <nlohmann/detail/view/macro_scope.hpp>
#include <nlohmann/detail/view/node.hpp>
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
namespace view
{
/// storage of a parsed document; heap-allocated (header and an initial node
/// array in one block) so that views survive moves of the owning document
struct document_data
{
const char* src = nullptr;
std::size_t size = 0;
node* tape = nullptr;
std::size_t tape_size = 0;
std::size_t tape_cap = 0;
node* inline_tape = nullptr; ///< node array allocated together with this header
std::size_t inline_cap = 0;
std::string arena{}; ///< decoded strings that contained escapes // NOLINT(readability-redundant-member-init)
std::string owned{}; ///< owned copy of the input, if any // NOLINT(readability-redundant-member-init)
std::array<const char*, 4> base = {{nullptr, nullptr, nullptr, nullptr}}; ///< string bases: source, arena (indexed by flags & node_flags::storage)
bool discarded = true;
/// one allocation for the header and room for `nodes` nodes; large
/// documents get a separate node array instead (so it can be trimmed)
static document_data* create(std::size_t nodes)
{
nodes = nodes <= 256 ? nodes : 0;
void* mem = ::operator new (sizeof(document_data) + (nodes * sizeof(node)));
auto* d = new (mem) document_data(); // NOLINT(cppcoreguidelines-owning-memory): owned by the returned pointer, freed by deleter
// (aligned: sizeof is a multiple of the alignment; through void*, as GCC's -Wcast-align wants)
d->inline_tape = static_cast<node*>(static_cast<void*>(static_cast<char*>(mem) + sizeof(document_data))); // NOLINT(bugprone-casting-through-void)
d->inline_cap = nodes;
d->tape = d->inline_tape;
d->tape_cap = nodes;
return d;
}
struct deleter
{
void operator()(document_data* d) const noexcept
{
d->~document_data();
::operator delete (d);
}
};
document_data() noexcept = default;
document_data(const document_data&) = delete;
document_data(document_data&&) = delete;
document_data& operator=(const document_data&) = delete;
document_data& operator=(document_data&&) = delete;
~document_data()
{
release();
}
void release() noexcept
{
if (tape != inline_tape)
{
::operator delete (tape);
}
tape = inline_tape;
tape_cap = inline_cap;
}
/// make room for n nodes; keeps the first tape_size nodes
void reserve(std::size_t n)
{
if (n <= tape_cap)
{
return;
}
node* fresh = static_cast<node*>(::operator new (n * sizeof(node)));
if (tape_size != 0)
{
std::memcpy(fresh, tape, tape_size * sizeof(node));
}
release();
tape = fresh;
tape_cap = n;
}
const char* str(const node& n) const noexcept
{
return base[n.flags & node_flags::storage] + n.off;
}
/// the node after n's subtree (containers span `next` nodes, scalars one)
static NLOHMANN_VIEW_ALWAYS_INLINE const node* after(const node* n) noexcept
{
return n + (is_container(*n) ? n->next : 1u);
}
/// first element (array) or first key (object) of a container
static NLOHMANN_VIEW_ALWAYS_INLINE const node* first_child(const node* n) noexcept
{
return n + 1;
}
/// end of the elements of a container
static NLOHMANN_VIEW_ALWAYS_INLINE const node* child_end(const node* n) noexcept
{
return n + n->next;
}
};
} // namespace view
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
@@ -1,63 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
// Macros of json_view.hpp and its detail headers. json.hpp undefines its own
// macros at its end (macro_unscope.hpp), so the view defines the few it needs
// under its own prefix; json_view.hpp undefines them all at its end
// (detail/view/macro_unscope.hpp). Configuration that json.hpp undefines is
// read from detail::abi_config instead.
#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
#define NLOHMANN_VIEW_HAS_CPP_17 1
#else
#define NLOHMANN_VIEW_HAS_CPP_17 0
#endif
#if defined(__GNUC__) || defined(__clang__)
#define NLOHMANN_VIEW_LIKELY(x) __builtin_expect(!!(x), 1)
#define NLOHMANN_VIEW_UNLIKELY(x) __builtin_expect(!!(x), 0)
#define NLOHMANN_VIEW_ALWAYS_INLINE inline __attribute__((always_inline))
#define NLOHMANN_VIEW_NOINLINE __attribute__((noinline))
#elif defined(_MSC_VER)
#define NLOHMANN_VIEW_LIKELY(x) (x)
#define NLOHMANN_VIEW_UNLIKELY(x) (x)
#define NLOHMANN_VIEW_ALWAYS_INLINE __forceinline
#define NLOHMANN_VIEW_NOINLINE __declspec(noinline)
#else
#define NLOHMANN_VIEW_LIKELY(x) (x)
#define NLOHMANN_VIEW_UNLIKELY(x) (x)
#define NLOHMANN_VIEW_ALWAYS_INLINE inline
#define NLOHMANN_VIEW_NOINLINE
#endif
// exceptions as in json.hpp (JSON_NOEXCEPTION, JSON_THROW_USER)
#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
#define NLOHMANN_VIEW_THROW(exception) throw exception
#else
#include <cstdlib>
// (the exception is built first, so that the arguments of the throwing
// helpers count as used; the program ends anyway)
#define NLOHMANN_VIEW_THROW(exception) (static_cast<void>(exception), std::abort())
#endif
#if defined(JSON_THROW_USER)
#undef NLOHMANN_VIEW_THROW
#define NLOHMANN_VIEW_THROW JSON_THROW_USER
#endif
// the parser stores a node's first word at once where the layout of `node` is
// known to be little-endian (MSVC targets are); elsewhere field by field
#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || defined(_MSC_VER)
#define NLOHMANN_VIEW_LITTLE_ENDIAN 1
#else
#define NLOHMANN_VIEW_LITTLE_ENDIAN 0
#endif
/// sixteen checks at fixed offsets 0..15
#define NLOHMANN_VIEW_REPEAT16(X) X(0) X(1) X(2) X(3) X(4) X(5) X(6) X(7) X(8) X(9) X(10) X(11) X(12) X(13) X(14) X(15)
@@ -1,20 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
// undefine the macros of detail/view/macro_scope.hpp (at the end of json_view.hpp)
#undef NLOHMANN_VIEW_HAS_CPP_17
#undef NLOHMANN_VIEW_LIKELY
#undef NLOHMANN_VIEW_UNLIKELY
#undef NLOHMANN_VIEW_ALWAYS_INLINE
#undef NLOHMANN_VIEW_NOINLINE
#undef NLOHMANN_VIEW_THROW
#undef NLOHMANN_VIEW_LITTLE_ENDIAN
#undef NLOHMANN_VIEW_REPEAT16
-97
View File
@@ -1,97 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <cstddef> // size_t
#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
#include <cstring> // memcpy
#include <nlohmann/json.hpp>
#include <nlohmann/detail/view/macro_scope.hpp>
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
namespace view
{
// the node kinds are value_t values; the tests of is_container() and of the
// number kinds depend on this numbering
static_assert(static_cast<std::uint8_t>(value_t::null) == 0 && static_cast<std::uint8_t>(value_t::object) == 1
&& static_cast<std::uint8_t>(value_t::array) == 2 && static_cast<std::uint8_t>(value_t::string) == 3
&& static_cast<std::uint8_t>(value_t::boolean) == 4 && static_cast<std::uint8_t>(value_t::number_integer) == 5
&& static_cast<std::uint8_t>(value_t::number_unsigned) == 6 && static_cast<std::uint8_t>(value_t::number_float) == 7,
"the node format depends on the numbering of value_t");
/// node flags
struct node_flags
{
static constexpr std::uint8_t escaped = 1; ///< string payload lives in the decode arena, not the source
static constexpr std::uint8_t storage = 3; ///< mask: where a string or number token lives (index into document_data::base)
static constexpr std::uint8_t is_true = 4; ///< boolean value
};
/// One entry of the flat index, in document order. An object's members are
/// stored as key node followed by the value's subtree. Integers keep their
/// converted 64-bit value in the len/next bytes (the node after a scalar is
/// always the next one, and the token length follows from `extra`).
struct node
{
std::uint8_t kind; ///< value_t
std::uint8_t flags; ///< node_flags
std::uint16_t extra; ///< numbers: integer digits (low byte) and fraction digits (high byte), 255 = "many"; otherwise 0
std::uint32_t off; ///< source offset (string content, number token, literal, bracket); arena offset if node_flags::escaped
std::uint32_t len; ///< string: decoded bytes; float: token bytes; array/object: element count
std::uint32_t next; ///< array/object: number of nodes of the subtree (its extent in the enclosing sequence)
};
static_assert(sizeof(node) == 16, "node must stay 16 bytes");
NLOHMANN_VIEW_ALWAYS_INLINE bool is_container(const node& n) noexcept
{
return static_cast<unsigned>(n.kind) - 1u <= 1u;
}
/// the converted value of an integer node (stored in len/next)
NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t integer_bits(const node& n) noexcept
{
std::uint64_t v = 0;
std::memcpy(&v, reinterpret_cast<const unsigned char*>(&n) + 8, 8); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
return v;
}
NLOHMANN_VIEW_ALWAYS_INLINE void set_integer_bits(node& n, std::uint64_t v) noexcept
{
std::memcpy(reinterpret_cast<unsigned char*>(&n) + 8, &v, 8); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
}
/// token length of a number node
NLOHMANN_VIEW_ALWAYS_INLINE std::uint32_t number_length(const node& n) noexcept
{
return n.kind == static_cast<std::uint8_t>(value_t::number_float) ? n.len
: (n.extra & 0xFFu) + (n.kind == static_cast<std::uint8_t>(value_t::number_integer) ? 1u : 0u);
}
/// estimated number of nodes for an input of `size` bytes (one node per ~12
/// bytes covers typical documents without regrowth)
inline std::size_t estimate_nodes(std::size_t size) noexcept
{
return (size / 12) + 16;
}
/// estimated number of nodes for the input [src, src + size): pretty-printed
/// input (whitespace after the first byte) needs about a node per 12 bytes,
/// minified input up to one per 4 (yyjson tells the two apart the same way)
inline std::size_t estimate_nodes(const char* src, std::size_t size) noexcept
{
return size >= 2 && (src[1] == ' ' || src[1] == '\n' || src[1] == '\r' || src[1] == '\t') ? estimate_nodes(size) : (size / 4) + 16;
}
} // namespace view
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
-189
View File
@@ -1,189 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-FileCopyrightText: 2020 YaoYuan <https://github.com/ibireme/yyjson>
// SPDX-License-Identifier: MIT
#pragma once
#include <array> // array
#include <cstddef> // size_t
#include <cstdint> // uint8_t, uint16_t, uint64_t
#include <cstring> // memcpy
#include <nlohmann/json.hpp>
#include <nlohmann/detail/view/macro_scope.hpp>
// Scanning primitives of the view's parser. The unrolled checks at fixed
// offsets follow yyjson (https://github.com/ibireme/yyjson, MIT license): the
// loads do not depend on each other, so the CPU can run ahead. Words are read
// with read_eight_bytes(), so nothing here depends on the byte order.
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
namespace view
{
/// 1 for bytes that may appear verbatim in a string: 0x20..0x7F except '"' and '\\'
inline const std::uint8_t* string_plain() noexcept
{
static const std::array<std::uint8_t, 256> table =
{
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x00..0x1F
1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x20..0x3F ('"')
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, // 0x40..0x5F ('\\')
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x60..0x7F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x80..0x9F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xA0..0xBF
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xC0..0xDF
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xE0..0xFF
}
};
return table.data();
}
NLOHMANN_VIEW_ALWAYS_INLINE bool is_digit(unsigned char c) noexcept
{
return static_cast<unsigned char>(c - '0') <= 9;
}
/// two bytes as they are in memory (only compared with byte-symmetric patterns)
NLOHMANN_VIEW_ALWAYS_INLINE std::uint16_t load16(const unsigned char* p) noexcept
{
std::uint16_t w = 0;
std::memcpy(&w, p, 2);
return w;
}
/// Advance over plain string bytes and well-formed UTF-8. Stops at a quote,
/// a backslash, a control character, ill-formed UTF-8, or the end. The first
/// 16 bytes are checked one by one, so that the position advances by
/// constants in predicted branches (most strings are short); longer runs
/// continue eight bytes at a time.
NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* scan_string_run(const unsigned char* p, const unsigned char* e) noexcept
{
const std::uint8_t* plain = string_plain();
for (;;)
{
if (e - p >= 16)
{
#define NLOHMANN_VIEW_STEP(i) if (NLOHMANN_VIEW_LIKELY(plain[p[i]] != 0)) {} else { p += (i); goto stop; }
NLOHMANN_VIEW_REPEAT16(NLOHMANN_VIEW_STEP)
#undef NLOHMANN_VIEW_STEP
p += 16;
while (e - p >= 8)
{
const std::uint64_t special = swar_string_special(read_eight_bytes(p));
if (special != 0)
{
p += count_trailing_zeros(special) / 8;
goto stop;
}
p += 8;
}
continue;
}
while (p != e && plain[*p] != 0)
{
++p;
}
if (p == e)
{
return p;
}
stop:
if (*p < 0x80)
{
return p; // quote, backslash, or control character
}
// non-ASCII: a run of well-formed sequences (the library's check, so
// that exactly what json::parse accepts is accepted)
do
{
const std::size_t n = validate_one_utf8(p, static_cast<std::size_t>(e - p));
if (n == 0)
{
return p;
}
p += n;
}
while (p != e && *p >= 0x80);
}
}
/// advance over ASCII digits
NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* skip_digits(const unsigned char* p, const unsigned char* e) noexcept
{
while (e - p >= 16)
{
#define NLOHMANN_VIEW_STEP(i) if (NLOHMANN_VIEW_LIKELY(is_digit(p[i]))) {} else { return p + (i); }
NLOHMANN_VIEW_REPEAT16(NLOHMANN_VIEW_STEP)
#undef NLOHMANN_VIEW_STEP
p += 16;
}
while (p != e && is_digit(*p))
{
++p;
}
return p;
}
/// powers of ten up to 10^19 as integers
inline std::uint64_t int_pow10(unsigned k) noexcept
{
static const std::array<std::uint64_t, 20> table =
{
{
1u, 10u, 100u, 1000u, 10000u, 100000u, 1000000u, 10000000u, 100000000u, 1000000000u,
10000000000u, 100000000000u, 1000000000000u, 10000000000000u, 100000000000000u, 1000000000000000u,
10000000000000000u, 100000000000000000u, 1000000000000000000u, 10000000000000000000u
}
};
return table[k];
}
/// value of 0 < k < 8 digits at p in one step if [p, p + 8) lies below
/// limit, else one digit at a time (whole blocks of eight digits are read by
/// parse_upto19() directly)
NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t parse_upto8(const unsigned char* p, unsigned k, const unsigned char* limit) noexcept
{
if (NLOHMANN_VIEW_LIKELY(limit - p >= 8))
{
// move the k digits to the top and pad the vacated low bytes with '0'
const unsigned shift = 8 * (8 - k);
return parse_eight_digits((read_eight_bytes(p) << shift) | (0x3030303030303030u >> (8 * k)));
}
std::uint64_t v = 0;
for (unsigned i = 0; i < k; ++i)
{
v = (v * 10) + static_cast<std::uint64_t>(p[i] - '0');
}
return v;
}
/// value of k <= 19 digits at p
NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t parse_upto19(const unsigned char* p, unsigned k, const unsigned char* limit) noexcept
{
std::uint64_t w = 0;
while (k >= 8)
{
// (eight digits of the token: they lie below limit)
w = (w * 100000000u) + parse_eight_digits(read_eight_bytes(p));
p += 8;
k -= 8;
}
if (k != 0)
{
w = (w * int_pow10(k)) + parse_upto8(p, k, limit);
}
return w;
}
} // namespace view
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
-111
View File
@@ -1,111 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#pragma once
#include <algorithm> // min
#include <cstddef> // size_t
#include <cstring> // memcmp, strlen
#include <string> // basic_string
#include <nlohmann/json.hpp>
#include <nlohmann/detail/view/macro_scope.hpp>
#if NLOHMANN_VIEW_HAS_CPP_17
#include <string_view> // string_view
#endif
#ifndef JSON_NO_IO
#include <ostream> // ostream
#endif
NLOHMANN_JSON_NAMESPACE_BEGIN
namespace detail
{
namespace view
{
#if NLOHMANN_VIEW_HAS_CPP_17
using string_ref = std::string_view;
#else
/// minimal C++11 stand-in for std::string_view
class string_ref
{
public:
using size_type = std::size_t;
using const_iterator = const char*;
string_ref() noexcept = default;
string_ref(const char* s) : m_data(s), m_size(std::strlen(s)) {} // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
string_ref(const char* s, std::size_t n) noexcept : m_data(s), m_size(n) {}
template<typename Traits, typename Alloc>
string_ref(const std::basic_string<char, Traits, Alloc>& s) noexcept : m_data(s.data()), m_size(s.size()) {} // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
const char* data() const noexcept
{
return m_data;
}
std::size_t size() const noexcept
{
return m_size;
}
std::size_t length() const noexcept
{
return m_size;
}
bool empty() const noexcept
{
return m_size == 0;
}
const char* begin() const noexcept
{
return m_data;
}
const char* end() const noexcept
{
return m_data + m_size;
}
char operator[](std::size_t i) const noexcept
{
return m_data[i];
}
template<typename Traits, typename Alloc>
explicit operator std::basic_string<char, Traits, Alloc>() const
{
return std::basic_string<char, Traits, Alloc>(m_data, m_size);
}
friend bool operator==(string_ref a, string_ref b) noexcept
{
return a.m_size == b.m_size && (a.m_size == 0 || std::memcmp(a.m_data, b.m_data, a.m_size) == 0);
}
friend bool operator!=(string_ref a, string_ref b) noexcept
{
return !(a == b);
}
friend bool operator<(string_ref a, string_ref b) noexcept
{
const int c = std::memcmp(a.m_data, b.m_data, (std::min)(a.m_size, b.m_size));
return c != 0 ? c < 0 : a.m_size < b.m_size;
}
#ifndef JSON_NO_IO
friend std::ostream& operator<<(std::ostream& o, string_ref s)
{
return o.write(s.m_data, static_cast<std::streamsize>(s.m_size));
}
#endif
private:
const char* m_data = "";
std::size_t m_size = 0;
};
#endif
} // namespace view
} // namespace detail
NLOHMANN_JSON_NAMESPACE_END
+6 -2
View File
@@ -43,7 +43,6 @@
#include <nlohmann/adl_serializer.hpp>
#include <nlohmann/byte_container_with_subtype.hpp>
#include <nlohmann/detail/abi_config.hpp>
#include <nlohmann/detail/conversions/from_json.hpp>
#include <nlohmann/detail/conversions/to_json.hpp>
#include <nlohmann/detail/exceptions.hpp>
@@ -1596,7 +1595,12 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
template < typename CompatibleType,
typename U = detail::uncvref_t<CompatibleType>,
detail::enable_if_t <
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value
#if JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
// see https://github.com/nlohmann/json/issues/2226
&& !detail::is_basic_json_reference_tuple<basic_json_t, U>::value
#endif
, int > = 0 >
basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
std::forward<CompatibleType>(val))))
File diff suppressed because it is too large Load Diff
-886
View File
@@ -12,15 +12,10 @@
#include <nlohmann/json.hpp>
using nlohmann::json;
#include <array> // array
#include <cfloat> // FLT_EVAL_METHOD
#include <cstdint> // uint32_t, uint64_t
#include <cstdlib> // strtod
#include <cstring> // memcpy
#include <random> // mt19937
#include <sstream> // stringstream
#include <string> // string
#include <utility> // pair
#include <vector> // vector
namespace
@@ -664,184 +659,6 @@ TEST_CASE("lexer string fast path")
}
}
TEST_CASE("lexer escape fast path")
{
// json::accept() never throws, so this section stays covered without
// exceptions; it pins which of the cases below are valid/invalid and
// checks the contiguous and streaming paths agree on that classification.
SECTION("accept() parity")
{
const std::vector<std::pair<std::string, bool>> cases =
{
{"\\u0041", true}, {"\\u00e4", true}, {"\\u00E4", true},
{"\\uD83D\\uDE00", true},
{"\\u12", false}, {"\\u12G4", false}, {"\\uXYZW", false},
{"\\uD800", false}, {"\\uD800A", false}, {"\\uD800\\u0041", false},
{"\\uDC00", false}, {"\\u", false}
};
for (const auto& c : cases)
{
for (const std::size_t offset :
{
std::size_t{0}, std::size_t{9}
})
{
const std::string doc = "[\"" + std::string(offset, 'a') + c.first + "\"]";
CAPTURE(doc);
CHECK(json::accept(doc) == c.second);
std::stringstream ss(doc);
CHECK(json::accept(ss) == c.second);
}
}
}
#if !defined(JSON_NOEXCEPTION)
// the full outcome of parsing @a doc: the parsed value, or the exact
// error message, so a mismatch in either is caught
const auto outcome = [](const std::string & doc, bool streaming) -> std::string
{
try
{
if (streaming)
{
std::stringstream ss(doc);
const json j = json::parse(ss);
return j.dump();
}
const json j = json::parse(doc);
return j.dump();
}
catch (const json::exception& e)
{
return {e.what()};
}
};
SECTION("contiguous vs streaming parity")
{
const std::vector<std::string> escapes =
{
"\\u0041", // "A"
"\\u00e4", // "ä" (lowercase hex)
"\\u00E4", // "ä" (uppercase hex)
"\\uD83D\\uDE00", // valid surrogate pair (an emoji)
"\\u12", // truncated: only 2 hex digits before the closing quote
"\\u12G4", // invalid hex digit at the 3rd position
"\\uXYZW", // all 4 bytes invalid
"\\uD800", // lone high surrogate, string ends right after
"\\uD800A", // high surrogate not followed by another \u escape
"\\uD800\\u0041", // high surrogate followed by \u, but not a low surrogate
"\\uDC00", // lone low surrogate
"\\u", // '\u' with nothing after (closing quote right away)
};
// once at the start of the string and once past the first 8-byte SWAR
// word of the outer string_bulk_run, so the escape is reached both
// right after the opening quote and mid-run
for (const auto& escape : escapes)
{
for (const std::size_t offset :
{
std::size_t{0}, std::size_t{9}
})
{
const std::string doc = "[\"" + std::string(offset, 'a') + escape + "\"]";
CAPTURE(doc);
CHECK(outcome(doc, false) == outcome(doc, true));
}
// the escape is the last thing before end of input: no closing
// quote at all
const std::string truncated_doc = "[\"" + escape;
CAPTURE(truncated_doc);
CHECK(outcome(truncated_doc, false) == outcome(truncated_doc, true));
}
}
SECTION("truncated \\u escape at every distance from the end of input")
{
// ia.bulk_remaining() must correctly report fewer than 4 bytes for
// every possible count of trailing hex-looking bytes (0, 1, 2, or 3)
// before end of input, so the fast path declines and the byte path
// alone reports the "must be followed by 4 hex digits" error, at the
// same position, in every case
for (const std::string& tail :
{
std::string{}, std::string("1"), std::string("12"), std::string("123")
})
{
const std::string doc = "[\"\\u" + tail;
CAPTURE(doc);
CHECK(outcome(doc, false) == outcome(doc, true));
CHECK(outcome(doc, false).find("must be followed by 4 hex digits") != std::string::npos);
}
}
SECTION("invalid hex digit at every position of the 4")
{
// the fast path must decline for *any* invalid byte among the 4, not
// just the first, and the byte path must then stop at exactly that
// position - same as it always has
for (std::size_t bad_pos = 0; bad_pos < 4; ++bad_pos)
{
std::string digits = "1234";
digits[bad_pos] = 'g'; // not a hex digit
const std::string doc = "[\"\\u" + digits + "\"]";
CAPTURE(doc);
CHECK(outcome(doc, false) == outcome(doc, true));
CHECK(outcome(doc, false).find("must be followed by 4 hex digits") != std::string::npos);
}
}
SECTION("random escapes")
{
// A seeded PRNG builds the 4 bytes following `\u` from a mix of hex
// digits and non-hex bytes, at varying distances from the start of
// the string, to compare the two scanners on many more shapes than
// are practical to enumerate by hand.
std::mt19937 gen(7654321); // NOLINT(cert-msc32-c,cert-msc51-cpp)
const std::string hex_alphabet = "0123456789AaBbCcDdEeFf";
std::uniform_int_distribution<std::size_t> pick_hex(0, hex_alphabet.size() - 1);
std::uniform_int_distribution<int> pick_byte(1, 255); // never NUL
std::uniform_int_distribution<int> pick_is_hex(0, 4); // 4-in-5 chance of a hex digit
std::uniform_int_distribution<std::size_t> pick_offset(0, 12);
std::vector<std::string> mismatches;
for (int iter = 0; iter < 3000; ++iter)
{
std::string digits;
for (int i = 0; i < 4; ++i)
{
if (pick_is_hex(gen) != 0)
{
digits += hex_alphabet[pick_hex(gen)];
}
else
{
char c = static_cast<char>(pick_byte(gen));
if (c == '"' || c == '\\')
{
// keep the string well-formed apart from the escape
// itself, so any mismatch is attributable to the \u
// handling and not to an unrelated quote/escape
c = 'z';
}
digits += c;
}
}
const std::string doc = "[\"" + std::string(pick_offset(gen), 'a') + "\\u" + digits + "\"]";
if (outcome(doc, false) != outcome(doc, true))
{
mismatches.push_back(doc);
}
}
CAPTURE(mismatches);
CHECK(mismatches.empty());
}
#endif
}
TEST_CASE("parse_float_fast declines what it cannot convert exactly")
{
// The lexer only hands well-formed numbers to parse_float_fast, so the
@@ -883,706 +700,3 @@ TEST_CASE("parse_float_fast declines what it cannot convert exactly")
CHECK_FALSE(fast("1e23", out));
CHECK_FALSE(fast("1e-23", out));
}
namespace
{
// arbitrary-precision unsigned integers, just enough to recompute the table of
// powers of five (little-endian 32-bit limbs)
using big_uint = std::vector<std::uint32_t>;
void big_trim(big_uint& a)
{
while (!a.empty() && a.back() == 0)
{
a.pop_back();
}
}
big_uint big_from(std::uint64_t high, std::uint64_t low)
{
big_uint a = {static_cast<std::uint32_t>(low), static_cast<std::uint32_t>(low >> 32u),
static_cast<std::uint32_t>(high), static_cast<std::uint32_t>(high >> 32u)
};
big_trim(a);
return a;
}
big_uint big_mul(const big_uint& a, const big_uint& b)
{
big_uint r(a.size() + b.size(), 0);
for (std::size_t i = 0; i < a.size(); ++i)
{
std::uint64_t carry = 0;
for (std::size_t j = 0; j < b.size(); ++j)
{
const std::uint64_t t = (static_cast<std::uint64_t>(a[i]) * b[j]) + r[i + j] + carry;
r[i + j] = static_cast<std::uint32_t>(t);
carry = t >> 32u;
}
r[i + b.size()] = static_cast<std::uint32_t>(carry);
}
big_trim(r);
return r;
}
big_uint big_shl(const big_uint& a, std::size_t s)
{
big_uint r(s / 32, 0);
std::uint32_t carry = 0;
for (const std::uint32_t x : a)
{
const std::uint64_t t = static_cast<std::uint64_t>(x) << (s % 32);
r.push_back(static_cast<std::uint32_t>(t) | carry);
carry = static_cast<std::uint32_t>(t >> 32u);
}
r.push_back(carry);
big_trim(r);
return r;
}
// a + 1 (add) or a - 1 (!add, a > 0)
big_uint big_step(big_uint a, bool add)
{
for (auto& x : a)
{
const std::uint32_t old = x;
x = add ? x + 1 : x - 1;
if ((add && x > old) || (!add && x < old))
{
break;
}
}
if (add && (a.empty() || a.back() == 0))
{
a.push_back(1);
}
big_trim(a);
return a;
}
bool big_less_equal(const big_uint& a, const big_uint& b)
{
if (a.size() != b.size())
{
return a.size() < b.size();
}
for (std::size_t i = a.size(); i-- > 0;)
{
if (a[i] != b[i])
{
return a[i] < b[i];
}
}
return true;
}
std::size_t big_bit_length(const big_uint& a)
{
std::size_t n = a.size() * 32;
for (std::uint32_t top = a.back(); (top & 0x80000000u) == 0; top <<= 1u)
{
--n;
}
return n;
}
std::uint64_t bits_of(double d)
{
std::uint64_t b = 0;
std::memcpy(&b, &d, sizeof(b));
return b;
}
bool eisel_lemire(const std::string& s, double& out)
{
return nlohmann::detail::parse_float_eisel_lemire(s.data(), s.data() + s.size(), out);
}
// significant digits of a token, without trailing zeros
std::size_t significant_digits(const std::string& s)
{
std::string digits;
for (const char c : s)
{
if (c == 'e' || c == 'E')
{
break;
}
if (c >= '0' && c <= '9' && !(digits.empty() && c == '0'))
{
digits += c;
}
}
while (!digits.empty() && digits.back() == '0')
{
digits.pop_back();
}
return digits.size();
}
} // namespace
TEST_CASE("Eisel-Lemire float conversion")
{
SECTION("the table of powers of five")
{
// Recompute every entry the way fast_float's table_generation.py
// defines it, using only multiplications and comparisons: for q >= 0
// the most significant 128 bits of 5^q; for q < 0 floor(2^b / 5^-q) + 1
// for b = z + 127 (q >= -27), or that value for b = 2z + 128 cut to
// its most significant 128 bits (q < -27), where z is the bit length
// of 5^-q.
const auto& table = nlohmann::detail::pow5_128();
big_uint power5 = {1};
for (std::int64_t q = 0; q <= nlohmann::detail::pow5_128_largest_power; ++q)
{
const auto index = static_cast<std::size_t>(2 * (q - nlohmann::detail::pow5_128_smallest_power));
const big_uint entry = big_from(table[index], table[index + 1]);
const std::size_t bits = big_bit_length(power5);
if (bits <= 128)
{
CHECK(entry == big_shl(power5, 128 - bits));
}
else
{
// floor(5^q / 2^(bits - 128))
CHECK(big_less_equal(big_shl(entry, bits - 128), power5));
CHECK_FALSE(big_less_equal(big_shl(big_step(entry, true), bits - 128), power5));
}
power5 = big_mul(power5, {5});
}
power5 = {5};
for (std::int64_t q = -1; q >= nlohmann::detail::pow5_128_smallest_power; --q)
{
const auto index = static_cast<std::size_t>(2 * (q - nlohmann::detail::pow5_128_smallest_power));
const big_uint entry = big_from(table[index], table[index + 1]);
CHECK(big_bit_length(entry) == 128);
const std::size_t z = big_bit_length(power5);
const big_uint two_b = big_shl({1}, q >= -27 ? z + 127 : (2 * z) + 128);
// c = floor(2^b / p) + 1, stored as floor(c / 2^s):
// (entry * 2^s - 1) * p <= 2^b < ((entry + 1) * 2^s - 1) * p
const std::size_t s = q >= -27 ? 0 : z + 1;
CHECK(big_less_equal(big_mul(big_step(big_shl(entry, s), false), power5), two_b));
CHECK_FALSE(big_less_equal(big_mul(big_step(big_shl(big_step(entry, true), s), false), power5), two_b));
power5 = big_mul(power5, {5});
}
}
SECTION("128-bit products and leading zeros")
{
// whichever implementation the compiler gets (with or without a
// 128-bit integer type or a builtin)
std::uint64_t state = 42;
for (int i = 0; i < 10000; ++i)
{
state ^= state << 13u;
state ^= state >> 7u;
state ^= state << 17u;
const std::uint64_t a = state;
const std::uint64_t b = (state * 0x9E3779B97F4A7C15u) >> (i % 64);
const auto product = nlohmann::detail::full_multiplication(a, b);
CHECK(big_from(product.high, product.low) == big_mul(big_from(0, a), big_from(0, b)));
const int k = i % 64;
const std::uint64_t x = (std::uint64_t{1} << k) | (a & ((std::uint64_t{1} << k) - 1));
CHECK(nlohmann::detail::count_leading_zeros(x) == 63 - k);
}
}
SECTION("known values")
{
// Generated with Python, whose float() is correctly rounded:
// cases = [<hard cases>, 2**53 + 2k + 1, 2**54 + 4k + 2, and exact midpoints
// between neighbouring doubles, also 1e-60 above and below them]
// print('{"%s", 0x%016xu},' % (s, struct.unpack('<Q', struct.pack('<d', float(s)))[0]))
const std::vector<std::pair<std::string, std::uint64_t>> known =
{
{"0", 0x0000000000000000u},
{"-0", 0x8000000000000000u},
{"0.0", 0x0000000000000000u},
{"-0.0", 0x8000000000000000u},
{"0e5", 0x0000000000000000u},
{"0.000e-9", 0x0000000000000000u},
{"1", 0x3ff0000000000000u},
{"-1", 0xbff0000000000000u},
{"0.1", 0x3fb999999999999au},
{"0.3", 0x3fd3333333333333u},
{"1.5", 0x3ff8000000000000u},
{"-2.5e-3", 0xbf647ae147ae147bu},
{"1e23", 0x44b52d02c7e14af6u},
{"1e22", 0x4480f0cf064dd592u},
{"8.98846567431158e307", 0x7fe0000000000000u},
{"2.2250738585072011e-308", 0x000fffffffffffffu},
{"2.2250738585072012e-308", 0x0010000000000000u},
{"2.2250738585072014e-308", 0x0010000000000000u},
{"4.9406564584124654e-324", 0x0000000000000001u},
{"2.4703282292062327e-324", 0x0000000000000000u},
{"2.4703282292062328e-324", 0x0000000000000001u},
{"1e-324", 0x0000000000000000u},
{"3e-324", 0x0000000000000001u},
{"1.7976931348623157e308", 0x7fefffffffffffffu},
{"1.7976931348623158e308", 0x7fefffffffffffffu},
{"1.7976931348623159e308", 0x7ff0000000000000u},
{"1e308", 0x7fe1ccf385ebc8a0u},
{"1e309", 0x7ff0000000000000u},
{"-1e400", 0xfff0000000000000u},
{"1e-400", 0x0000000000000000u},
{"9007199254740991", 0x433fffffffffffffu},
{"9007199254740992", 0x4340000000000000u},
{"9007199254740993", 0x4340000000000000u},
{"9007199254740995", 0x4340000000000002u},
{"18014398509481986", 0x4350000000000000u},
{"18014398509481990", 0x4350000000000002u},
{"7.2057594037927933e16", 0x4370000000000000u},
{"123456789012345678901234567890", 0x45f8ee90ff6c373eu},
{"1.000000000000000111", 0x3ff0000000000000u},
{"1.0000000000000001110223", 0x3ff0000000000000u},
{"1.00000000000000011102230246251565404236316680908203125", 0x3ff0000000000000u},
{"1.00000000000000011102230246251565404236316680908203126", 0x3ff0000000000001u},
{"0.00000000000000000000000000000000000000000000000000000000000001", 0x3310747ddddf22a8u},
{"100000000000000000000000000000000000000000000", 0x4911efc659cf7d4cu},
{"1234567890123456789", 0x43b12210f47de981u},
{"12345678901234567890", 0x43e56a95319d63e1u},
{"1234567890123456789.5", 0x43b12210f47de981u},
{"0.1234567890123456789012345", 0x3fbf9add3746f65fu},
{"4.4501477170144023e-308", 0x001fffffffffffffu},
{"2.4406961166466664e-309", 0x0001c14ae5310a48u},
{"5e-324", 0x0000000000000001u},
{"1.0e-307", 0x0031fa182c40c60du},
{"179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368", 0x7fefffffffffffffu},
{"4.9e-324", 0x0000000000000001u},
{"9007199254740993", 0x4340000000000000u},
{"18014398509481986", 0x4350000000000000u},
{"9007199254740995", 0x4340000000000002u},
{"18014398509481990", 0x4350000000000002u},
{"9007199254740997", 0x4340000000000002u},
{"18014398509481994", 0x4350000000000002u},
{"9007199254740999", 0x4340000000000004u},
{"18014398509481998", 0x4350000000000004u},
{"9007199254741001", 0x4340000000000004u},
{"18014398509482002", 0x4350000000000004u},
{"9007199254741003", 0x4340000000000006u},
{"18014398509482006", 0x4350000000000006u},
{"9007199254741005", 0x4340000000000006u},
{"18014398509482010", 0x4350000000000006u},
{"9007199254741007", 0x4340000000000008u},
{"18014398509482014", 0x4350000000000008u},
{"9007199254741009", 0x4340000000000008u},
{"18014398509482018", 0x4350000000000008u},
{"9007199254741011", 0x434000000000000au},
{"18014398509482022", 0x435000000000000au},
{"9007199254741013", 0x434000000000000au},
{"18014398509482026", 0x435000000000000au},
{"9007199254741015", 0x434000000000000cu},
{"18014398509482030", 0x435000000000000cu},
{"9007199254741017", 0x434000000000000cu},
{"18014398509482034", 0x435000000000000cu},
{"9007199254741019", 0x434000000000000eu},
{"18014398509482038", 0x435000000000000eu},
{"9007199254741021", 0x434000000000000eu},
{"18014398509482042", 0x435000000000000eu},
{"9007199254741023", 0x4340000000000010u},
{"18014398509482046", 0x4350000000000010u},
{"9007199254741025", 0x4340000000000010u},
{"18014398509482050", 0x4350000000000010u},
{"9007199254741027", 0x4340000000000012u},
{"18014398509482054", 0x4350000000000012u},
{"9007199254741029", 0x4340000000000012u},
{"18014398509482058", 0x4350000000000012u},
{"9007199254741031", 0x4340000000000014u},
{"18014398509482062", 0x4350000000000014u},
{"9007199254741033", 0x4340000000000014u},
{"18014398509482066", 0x4350000000000014u},
{"9007199254741035", 0x4340000000000016u},
{"18014398509482070", 0x4350000000000016u},
{"9007199254741037", 0x4340000000000016u},
{"18014398509482074", 0x4350000000000016u},
{"9007199254741039", 0x4340000000000018u},
{"18014398509482078", 0x4350000000000018u},
{"9007199254741041", 0x4340000000000018u},
{"18014398509482082", 0x4350000000000018u},
{"9007199254741043", 0x434000000000001au},
{"18014398509482086", 0x435000000000001au},
{"9007199254741045", 0x434000000000001au},
{"18014398509482090", 0x435000000000001au},
{"9007199254741047", 0x434000000000001cu},
{"18014398509482094", 0x435000000000001cu},
{"9007199254741049", 0x434000000000001cu},
{"18014398509482098", 0x435000000000001cu},
{"9007199254741051", 0x434000000000001eu},
{"18014398509482102", 0x435000000000001eu},
{"9007199254741053", 0x434000000000001eu},
{"18014398509482106", 0x435000000000001eu},
{"9007199254741055", 0x4340000000000020u},
{"18014398509482110", 0x4350000000000020u},
{"9007199254741057", 0x4340000000000020u},
{"18014398509482114", 0x4350000000000020u},
{"9007199254741059", 0x4340000000000022u},
{"18014398509482118", 0x4350000000000022u},
{"9007199254741061", 0x4340000000000022u},
{"18014398509482122", 0x4350000000000022u},
{"9007199254741063", 0x4340000000000024u},
{"18014398509482126", 0x4350000000000024u},
{"9007199254741065", 0x4340000000000024u},
{"18014398509482130", 0x4350000000000024u},
{"9007199254741067", 0x4340000000000026u},
{"18014398509482134", 0x4350000000000026u},
{"9007199254741069", 0x4340000000000026u},
{"18014398509482138", 0x4350000000000026u},
{"9007199254741071", 0x4340000000000028u},
{"18014398509482142", 0x4350000000000028u},
{"0.00000000000000000142055942108419951085063380808124102279024543292671443374397544090470546507276594638824462890625", 0x3c3a3466f662d406u},
{"0.000000000000000001420559421084199510850633808081241022790245432926714433743975440904705465072765946388244628906251", 0x3c3a3466f662d407u},
{"0.00000000000000000142055942108419951085063380808124102279024543292671443374397444090470546507276594638824462890625", 0x3c3a3466f662d406u},
{"8656.5250079159513916238211095333099365234375", 0x40c0e84333759a94u},
{"8656.52500791595139162382110953330993652343751", 0x40c0e84333759a94u},
{"8656.525007915951391623821109533309936523437499999999999999999", 0x40c0e84333759a93u},
{"13.07696731650454946560557800694368779659271240234375", 0x402a276842967ef0u},
{"13.076967316504549465605578006943687796592712402343751", 0x402a276842967ef0u},
{"13.07696731650454946560557800694368779659271240234374999999999", 0x402a276842967eefu},
{"74708253715391928", 0x437096ac2cc7ee5cu},
{"747082537153919281", 0x43a4bc5737f9e9f2u},
{"74708253715391927.99999999999999999999999999999999999999999999", 0x437096ac2cc7ee5bu},
{"1809802988.27203977108001708984375", 0x41daf7d9bb11691au},
{"1809802988.272039771080017089843751", 0x41daf7d9bb11691au},
{"1809802988.272039771080017089843749999999999999999999999999999", 0x41daf7d9bb116919u},
{"51.390809684186766759239617385901510715484619140625", 0x4049b2060d3e4568u},
{"51.3908096841867667592396173859015107154846191406251", 0x4049b2060d3e4569u},
{"51.39080968418676675923961738590151071548461914062499999999999", 0x4049b2060d3e4568u},
{"9999807412.59738445281982421875", 0x4202a0479da4c772u},
{"9999807412.597384452819824218751", 0x4202a0479da4c772u},
{"9999807412.597384452819824218749999999999999999999999999999999", 0x4202a0479da4c771u},
{"0.00000000023260971767101600534534272272645127367651785021962496102787554264068603515625", 0x3deff83a135dec10u},
{"0.000000000232609717671016005345342722726451273676517850219624961027875542640686035156251", 0x3deff83a135dec11u},
{"0.00000000023260971767101600534534272272645127367651785021962496102787544264068603515625", 0x3deff83a135dec10u},
{"0.000000000497610482021202508216234789619066523902457532813059515319764614105224609375", 0x3e01190730d1ec48u},
{"0.0000000004976104820212025082162347896190665239024575328130595153197646141052246093751", 0x3e01190730d1ec48u},
{"0.000000000497610482021202508216234789619066523902457532813059515319764514105224609375", 0x3e01190730d1ec47u},
{"0.0000000000291336422596533830691676779231223432149733287843673679162748157978057861328125", 0x3dc004321559736eu},
{"0.00000000002913364225965338306916767792312234321497332878436736791627481579780578613281251", 0x3dc004321559736fu},
{"0.0000000000291336422596533830691676779231223432149733287843673679162748057978057861328125", 0x3dc004321559736eu},
{"0.000000000000000039237155154865396441907405399546892080260012902422940561653064150959835387766361236572265625", 0x3c869e61cfa3b8a4u},
{"0.0000000000000000392371551548653964419074053995468920802600129024229405616530641509598353877663612365722656251", 0x3c869e61cfa3b8a5u},
{"0.000000000000000039237155154865396441907405399546892080260012902422940561653054150959835387766361236572265625", 0x3c869e61cfa3b8a4u},
{"0.00000000000000006496592863767266414092845207857846208631635335985395063307379359685000963509082794189453125", 0x3c92b9a3b219ee84u},
{"0.000000000000000064965928637672664140928452078578462086316353359853950633073793596850009635090827941894531251", 0x3c92b9a3b219ee85u},
{"0.00000000000000006496592863767266414092845207857846208631635335985395063307378359685000963509082794189453125", 0x3c92b9a3b219ee84u},
{"0.0000000000448169607439179753541822628688597626549217078917308754171244800090789794921875", 0x3dc8a36d2e8094dau},
{"0.00000000004481696074391797535418226286885976265492170789173087541712448000907897949218751", 0x3dc8a36d2e8094dau},
{"0.0000000000448169607439179753541822628688597626549217078917308754171244700090789794921875", 0x3dc8a36d2e8094d9u},
{"1800873890234250.875", 0x4319978a820cfe2cu},
{"1800873890234250.8751", 0x4319978a820cfe2cu},
{"1800873890234250.874999999999999999999999999999999999999999999", 0x4319978a820cfe2bu},
{"0.000023941132739153309216405436654628857695570331998169422149658203125", 0x3ef91aa61d42e0e0u},
{"0.0000239411327391533092164054366546288576955703319981694221496582031251", 0x3ef91aa61d42e0e1u},
{"0.000023941132739153309216405436654628857695570331998169422149658193125", 0x3ef91aa61d42e0e0u},
{"8339818978785937.5", 0x433da1056bb8ba92u},
{"8339818978785937.51", 0x433da1056bb8ba92u},
{"8339818978785937.499999999999999999999999999999999999999999999", 0x433da1056bb8ba91u},
{"283649145986385328", 0x438f7dcb29dae42eu},
{"2836491459863853281", 0x43c3ae9efa28ce9cu},
{"283649145986385327.9999999999999999999999999999999999999999999", 0x438f7dcb29dae42du},
{"0.0000000000000000004203729478287971874304476341685497759528753070014375965192388040492232903488911688327789306640625", 0x3c1f049ed78cb8a2u},
{"0.00000000000000000042037294782879718743044763416854977595287530700143759651923880404922329034889116883277893066406251", 0x3c1f049ed78cb8a3u},
{"0.0000000000000000004203729478287971874304476341685497759528753070014375965192387040492232903488911688327789306640625", 0x3c1f049ed78cb8a2u},
{"340031.78635183119331486523151397705078125", 0x4114c0ff25396a18u},
{"340031.786351831193314865231513977050781251", 0x4114c0ff25396a19u},
{"340031.7863518311933148652315139770507812499999999999999999999", 0x4114c0ff25396a18u},
{"0.0000000004543709717853330820053712055931242029538363880192264332436025142669677734375", 0x3dff3960f070bf76u},
{"0.00000000045437097178533308200537120559312420295383638801922643324360251426696777343751", 0x3dff3960f070bf76u},
{"0.0000000004543709717853330820053712055931242029538363880192264332436024142669677734375", 0x3dff3960f070bf75u},
{"0.0000000000007937958898451257082591244100968761704503924570008877026339177973568439483642578125", 0x3d6bede0b40e37c2u},
{"0.00000000000079379588984512570825912441009687617045039245700088770263391779735684394836425781251", 0x3d6bede0b40e37c3u},
{"0.0000000000007937958898451257082591244100968761704503924570008877026339176973568439483642578125", 0x3d6bede0b40e37c2u},
{"0.00000000000000068304843500200357021582520000166071595321259251644419041582523277611471712589263916015625", 0x3cc89c02848f8654u},
{"0.000000000000000683048435002003570215825200001660715953212592516444190415825232776114717125892639160156251", 0x3cc89c02848f8655u},
{"0.00000000000000068304843500200357021582520000166071595321259251644419041582513277611471712589263916015625", 0x3cc89c02848f8654u},
{"0.00000000147705080029041786940146712084494760863773166192913777194917201995849609375", 0x3e1960235bc34d06u},
{"0.000000001477050800290417869401467120844947608637731661929137771949172019958496093751", 0x3e1960235bc34d06u},
{"0.00000000147705080029041786940146712084494760863773166192913777194917101995849609375", 0x3e1960235bc34d05u},
{"2164972979236447104", 0x43be0b87743fb524u},
{"21649729792364471041", 0x43f2c734a8a7d136u},
{"2164972979236447103.999999999999999999999999999999999999999999", 0x43be0b87743fb523u},
{"13124633159586767", 0x4347506464a469e8u},
{"131246331595867671", 0x437d247d7dcd8461u},
{"13124633159586766.99999999999999999999999999999999999999999999", 0x4347506464a469e7u},
{"0.000000000000027605165650764659887597286048864477738779108113853499872902830247767269611358642578125", 0x3d1f14a5b417cb08u},
{"0.0000000000000276051656507646598875972860488644777387791081138534998729028302477672696113586425781251", 0x3d1f14a5b417cb09u},
{"0.000000000000027605165650764659887597286048864477738779108113853499872902820247767269611358642578125", 0x3d1f14a5b417cb08u},
{"0.01727792833395616796388072344825559412129223346710205078125", 0x3f91b14e248c42c8u},
{"0.017277928333956167963880723448255594121292233467102050781251", 0x3f91b14e248c42c9u},
{"0.01727792833395616796388072344825559412129223346710205078124999", 0x3f91b14e248c42c8u},
{"0.00000000000003096211381890547702500862566064822950373937142376501441276559489779174327850341796875", 0x3d216e1c61130b22u},
{"0.000000000000030962113818905477025008625660648229503739371423765014412765594897791743278503417968751", 0x3d216e1c61130b22u},
{"0.00000000000003096211381890547702500862566064822950373937142376501441276558489779174327850341796875", 0x3d216e1c61130b21u},
{"0.0000000000000683414954481284270259359974108983284531919182025472281338807079009711742401123046875", 0x3d333c86137e5170u},
{"0.00000000000006834149544812842702593599741089832845319191820254722813388070790097117424011230468751", 0x3d333c86137e5170u},
{"0.0000000000000683414954481284270259359974108983284531919182025472281338806979009711742401123046875", 0x3d333c86137e516fu},
{"3237539054990129.75", 0x4327010c9aa36664u},
{"3237539054990129.751", 0x4327010c9aa36664u},
{"3237539054990129.749999999999999999999999999999999999999999999", 0x4327010c9aa36663u},
{"0.0000000000000105429301486355911969397173440055240907798901443814809653076736140064895153045654296875", 0x3d07bd95dfb8a1eeu},
{"0.00000000000001054293014863559119693971734400552409077989014438148096530767361400648951530456542968751", 0x3d07bd95dfb8a1eeu},
{"0.0000000000000105429301486355911969397173440055240907798901443814809653076636140064895153045654296875", 0x3d07bd95dfb8a1edu},
{"9460.2061893763575426419265568256378173828125", 0x40c27a1a6469da1eu},
{"9460.20618937635754264192655682563781738281251", 0x40c27a1a6469da1fu},
{"9460.206189376357542641926556825637817382812499999999999999999", 0x40c27a1a6469da1eu},
{"465000373656610.53125", 0x42fa6ea56179c228u},
{"465000373656610.531251", 0x42fa6ea56179c229u},
{"465000373656610.5312499999999999999999999999999999999999999999", 0x42fa6ea56179c228u},
{"0.000000000107709773707743713401260815383950956818093214195641849073581397533416748046875", 0x3ddd9b66c974bb14u},
{"0.0000000001077097737077437134012608153839509568180932141956418490735813975334167480468751", 0x3ddd9b66c974bb14u},
{"0.000000000107709773707743713401260815383950956818093214195641849073581297533416748046875", 0x3ddd9b66c974bb13u},
{"0.012083347821554271152300064073870089487172663211822509765625", 0x3f88bf277dc215f4u},
{"0.0120833478215542711523000640738700894871726632118225097656251", 0x3f88bf277dc215f5u},
{"0.01208334782155427115230006407387008948717266321182250976562499", 0x3f88bf277dc215f4u},
{"2309804058391724800", 0x43c0070946d098e2u},
{"23098040583917248001", 0x43f408cb9884bf1au},
{"2309804058391724799.999999999999999999999999999999999999999999", 0x43c0070946d098e1u},
{"0.000000000078286047058220682019445698291671103911937290575906445155851542949676513671875", 0x3dd584e40ca80638u},
{"0.0000000000782860470582206820194456982916711039119372905759064451558515429496765136718751", 0x3dd584e40ca80638u},
{"0.000000000078286047058220682019445698291671103911937290575906445155851532949676513671875", 0x3dd584e40ca80637u},
{"2940024994425.709228515625", 0x4285643929d3cdacu},
{"2940024994425.7092285156251", 0x4285643929d3cdadu},
{"2940024994425.709228515624999999999999999999999999999999999999", 0x4285643929d3cdacu},
{"9503358.427352792583405971527099609375", 0x4162204fcdacdfc4u},
{"9503358.4273527925834059715270996093751", 0x4162204fcdacdfc4u},
{"9503358.427352792583405971527099609374999999999999999999999999", 0x4162204fcdacdfc3u},
{"0.00005589147834433423614399101542193903924271580763161182403564453125", 0x3f0d4da092aa5d6au},
{"0.000055891478344334236143991015421939039242715807631611824035644531251", 0x3f0d4da092aa5d6bu},
{"0.00005589147834433423614399101542193903924271580763161182403564452125", 0x3f0d4da092aa5d6au},
{"0.0000000164797038506435664295103900420409737126448135313694365322589874267578125", 0x3e51b1e8107bd640u},
{"0.00000001647970385064356642951039004204097371264481353136943653225898742675781251", 0x3e51b1e8107bd641u},
{"0.0000000164797038506435664295103900420409737126448135313694365322589774267578125", 0x3e51b1e8107bd640u},
{"73055.7873927834807545877993106842041015625", 0x40f1d5fc99292ce2u},
{"73055.78739278348075458779931068420410156251", 0x40f1d5fc99292ce3u},
{"73055.78739278348075458779931068420410156249999999999999999999", 0x40f1d5fc99292ce2u},
{"0.00000000002558172364455232122427880575336067736115508441940846751094795763492584228515625", 0x3dbc209d7509115au},
{"0.000000000025581723644552321224278805753360677361155084419408467510947957634925842285156251", 0x3dbc209d7509115bu},
{"0.00000000002558172364455232122427880575336067736115508441940846751094794763492584228515625", 0x3dbc209d7509115au},
{"0.000000000854497507560657937804791333430312443020238077906469698064029216766357421875", 0x3e0d5c3d540cc0d2u},
{"0.0000000008544975075606579378047913334303124430202380779064696980640292167663574218751", 0x3e0d5c3d540cc0d2u},
{"0.000000000854497507560657937804791333430312443020238077906469698064029116766357421875", 0x3e0d5c3d540cc0d1u},
{"26671499731071461376", 0x43f722433b19970eu},
{"266714997310714613761", 0x442cead409dffcd2u},
{"26671499731071461375.99999999999999999999999999999999999999999", 0x43f722433b19970eu},
{"0.0000000002725195963972150049060368088050545186395989816219298518262803554534912109375", 0x3df2ba37271cf5f2u},
{"0.00000000027251959639721500490603680880505451863959898162192985182628035545349121093751", 0x3df2ba37271cf5f2u},
{"0.0000000002725195963972150049060368088050545186395989816219298518262802554534912109375", 0x3df2ba37271cf5f1u},
{"0.0000000000377224663702246439557904325637937886957218314165629635681398212909698486328125", 0x3dc4bcf7157af68eu},
{"0.00000000003772246637022464395579043256379378869572183141656296356813982129096984863281251", 0x3dc4bcf7157af68fu},
{"0.0000000000377224663702246439557904325637937886957218314165629635681398112909698486328125", 0x3dc4bcf7157af68eu},
{"0.00000000000000009977342762593364154535842258994910996905560208471673566688053824691451154649257659912109375", 0x3c9cc1fac312e2a6u},
{"0.000000000000000099773427625933641545358422589949109969055602084716735666880538246914511546492576599121093751", 0x3c9cc1fac312e2a6u},
{"0.00000000000000009977342762593364154535842258994910996905560208471673566688052824691451154649257659912109375", 0x3c9cc1fac312e2a5u},
{"0.0000000003146248171139977444431948290159907662133509376189977047033607959747314453125", 0x3df59ef03588a228u},
{"0.00000000031462481711399774444319482901599076621335093761899770470336079597473144531251", 0x3df59ef03588a229u},
{"0.0000000003146248171139977444431948290159907662133509376189977047033606959747314453125", 0x3df59ef03588a228u},
{"488899209263030304", 0x439b23acf64c5e80u},
{"4888992092630303041", 0x43d0f64c19efbb10u},
{"488899209263030303.9999999999999999999999999999999999999999999", 0x439b23acf64c5e80u},
{"1.88357157350592807620870416940306313335895538330078125", 0x3ffe231bf23e21acu},
{"1.883571573505928076208704169403063133358955383300781251", 0x3ffe231bf23e21adu},
{"1.883571573505928076208704169403063133358955383300781249999999", 0x3ffe231bf23e21acu},
{"0.0000000216458400594294836451424756990254139044083103726734407246112823486328125", 0x3e573df694e72fb8u},
{"0.00000002164584005942948364514247569902541390440831037267344072461128234863281251", 0x3e573df694e72fb9u},
{"0.0000000216458400594294836451424756990254139044083103726734407246112723486328125", 0x3e573df694e72fb8u},
{"5107.79271041116453488939441740512847900390625", 0x40b3f3caef11cb26u},
{"5107.792710411164534889394417405128479003906251", 0x40b3f3caef11cb27u},
{"5107.792710411164534889394417405128479003906249999999999999999", 0x40b3f3caef11cb26u},
{"734059.8035226609208621084690093994140625", 0x412666d79b67527cu},
{"734059.80352266092086210846900939941406251", 0x412666d79b67527du},
{"734059.8035226609208621084690093994140624999999999999999999999", 0x412666d79b67527cu},
{"61431562016722684", 0x436b47f5c40021e0u},
{"614315620167226841", 0x43a10cf99a80152cu},
{"61431562016722683.99999999999999999999999999999999999999999999", 0x436b47f5c40021dfu},
{"2.0060840449445034305853141631814651191234588623046875", 0x40000c75cab08326u},
{"2.00608404494450343058531416318146511912345886230468751", 0x40000c75cab08326u},
{"2.006084044944503430585314163181465119123458862304687499999999", 0x40000c75cab08325u},
{"0.0000001760623599453036952716420489480075861621344301966018974781036376953125", 0x3e87a174e55262cau},
{"0.00000017606235994530369527164204894800758616213443019660189747810363769531251", 0x3e87a174e55262cbu},
{"0.0000001760623599453036952716420489480075861621344301966018974781035376953125", 0x3e87a174e55262cau},
{"0.833085849636964581588216560703585855662822723388671875", 0x3feaa8a3a7de6fb6u},
{"0.8330858496369645815882165607035858556628227233886718751", 0x3feaa8a3a7de6fb6u},
{"0.8330858496369645815882165607035858556628227233886718749999999", 0x3feaa8a3a7de6fb5u},
{"45031428.4182307310402393341064453125", 0x418579002358895au},
{"45031428.41823073104023933410644531251", 0x418579002358895bu},
{"45031428.41823073104023933410644531249999999999999999999999999", 0x418579002358895au},
{"5003361733758455296", 0x43d15be0bf39dd24u},
{"50033617337584552961", 0x4405b2d8ef08546cu},
{"5003361733758455295.999999999999999999999999999999999999999999", 0x43d15be0bf39dd23u},
};
for (const auto& c : known)
{
CAPTURE(c.first);
double out = 0;
if (eisel_lemire(c.first, out))
{
CHECK(bits_of(out) == c.second);
}
else
{
// only tokens with more than 19 significant digits are left to
// strtod: those whose value lies too close to a tie
CHECK(significant_digits(c.first) > 19);
}
}
}
SECTION("round trip")
{
// every double written by to_chars and read back, also with trailing
// digits that make the token longer than 19 digits
std::uint64_t state = 5295;
std::size_t declined = 0;
for (int i = 0; i < 200000; ++i)
{
state ^= state << 13u;
state ^= state >> 7u;
state ^= state << 17u;
std::uint64_t b = state;
if ((b & 0x7FF0000000000000u) == 0x7FF0000000000000u)
{
continue; // infinity or NaN
}
if (i % 4 == 0)
{
b &= 0x800FFFFFFFFFFFFFu; // subnormals
}
double d = 0;
std::memcpy(&d, &b, sizeof(d));
std::array<char, 64> buffer{};
const char* end = nlohmann::detail::to_chars(buffer.data(), buffer.data() + buffer.size(), d);
const std::string token(buffer.data(), static_cast<std::size_t>(end - buffer.data()));
CAPTURE(token);
double out = 0;
REQUIRE(eisel_lemire(token, out));
CHECK(bits_of(out) == b);
// insert digits before the exponent: the value moves by far less
// than the distance to the rounding boundary, so it must not change
std::string longer = token;
const std::size_t e = longer.find('e');
const std::string extra = longer.find('.') == std::string::npos ? ".000000000000000000001" : "000000000000000000001";
longer.insert(e == std::string::npos ? longer.size() : e, extra);
CAPTURE(longer);
if (eisel_lemire(longer, out))
{
CHECK(bits_of(out) == b);
}
else
{
// w and w + 1 round differently: only when the value is very
// close to a rounding boundary
++declined;
}
}
CHECK(declined < 1000); // 107 of the 200,000
}
SECTION("used by the lexer")
{
// 17 significant digits: beyond Clinger's fast path
CHECK(bits_of(json::parse("-65.613616999999977").get<double>()) == bits_of(-65.613616999999977));
CHECK(bits_of(json::parse("2.2250738585072011e-308").get<double>()) == 0x000FFFFFFFFFFFFFu);
CHECK(bits_of(json::parse("4.9406564584124654e-324").get<double>()) == 1u);
CHECK_THROWS_WITH_AS(json::parse("1.7976931348623159e308"),
"[json.exception.out_of_range.406] number overflow parsing '1.7976931348623159e308'", json::out_of_range&);
}
}
TEST_CASE("string scanning kernels")
{
// the word-at-a-time kernels must stop exactly where a byte-by-byte scan
// stops, for any content, length, and alignment
const auto reference_special = [](const unsigned char* data, std::size_t n)
{
std::size_t i = 0;
while (i < n && !nlohmann::detail::is_string_special(data[i]))
{
++i;
}
return i;
};
const auto reference_copyable = [](const unsigned char* data, std::size_t n)
{
std::size_t i = 0;
while (i < n && nlohmann::detail::is_ascii_copyable(data[i]))
{
++i;
}
return i;
};
const auto reference_bulk_run = [](const unsigned char* data, std::size_t n)
{
std::size_t i = 0;
while (i < n)
{
if (data[i] < 0x80u)
{
if (nlohmann::detail::is_string_special(data[i]))
{
break;
}
++i;
continue;
}
const std::size_t seq = nlohmann::detail::validate_one_utf8(data + i, n - i);
if (seq == 0)
{
break;
}
i += seq;
}
return i;
};
// pieces: ordinary ASCII, stops, DEL, well-formed sequences of every
// length, and ill-formed or truncated ones
const std::vector<std::string> pieces =
{
"a", "Z", " ", "~", "0123456789", "\"", "\\", std::string(1, '\0'), "\n", "\x1F", "\x7F",
"\xC3\xA4", "\xE2\x82\xAC", "\xE6\x97\xA5\xE6\x9C\xAC", "\xF0\x9F\x98\x80", "\xED\x9F\xBF",
"\x80", "\xC0\x80", "\xC3", "\xE2\x82", "\xED\xA0\x80", "\xF4\x90\x80\x80", "\xFF",
};
std::uint64_t state = 5295;
const auto next = [&state]()
{
state ^= state << 13u;
state ^= state >> 7u;
state ^= state << 17u;
return state;
};
for (int round = 0; round < 100000; ++round)
{
// mostly ordinary text, so that runs span several words
std::string text(static_cast<std::size_t>(next() % 8), '.');
const auto count = static_cast<std::size_t>(next() % 12);
for (std::size_t k = 0; k < count; ++k)
{
const std::size_t p = (next() % 4 == 0) ? static_cast<std::size_t>(next() % pieces.size()) : 0;
text += pieces[p];
text += std::string(static_cast<std::size_t>(next() % 10), 'x');
}
const auto* data = reinterpret_cast<const unsigned char*>(text.data()); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
for (std::size_t offset = 0; offset < 3 && offset <= text.size(); ++offset)
{
const std::size_t n = text.size() - offset;
CAPTURE(text);
CAPTURE(offset);
CHECK(nlohmann::detail::find_string_special(data + offset, n) == reference_special(data + offset, n));
CHECK(nlohmann::detail::find_ascii_copyable_run(data + offset, n) == reference_copyable(data + offset, n));
CHECK(nlohmann::detail::scalar_string_bulk_run(data + offset, n) == reference_bulk_run(data + offset, n));
}
}
// the trailing-zero count, whichever implementation the compiler gets
for (int k = 0; k < 64; ++k)
{
const std::uint64_t bit = std::uint64_t{1} << k;
CHECK(nlohmann::detail::count_trailing_zeros(bit) == k);
CHECK(nlohmann::detail::count_trailing_zeros(bit | (bit << 1u) | 0x8000000000000000u) == k);
}
}
@@ -0,0 +1,93 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++ (supporting code)
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#include "doctest_compatibility.h"
// This file tests the opt-in JSON_DISABLE_TUPLE_REFERENCE_CONVERSION, so it
// defines the macro itself rather than relying on a -D flag, and runs in every
// build.
#ifdef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#endif
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 1
#include <nlohmann/json.hpp>
using nlohmann::json;
using nlohmann::ordered_json;
#include <string>
#include <tuple>
#include <type_traits>
#include <utility>
// clang before 4 and GCC before 5 cannot create a std::tuple of basic_json
// references at all, with or without JSON_DISABLE_TUPLE_REFERENCE_CONVERSION:
// the tuple constructors make them instantiate basic_json's conversion operator
// for libstdc++'s internal tuple bases, which fails hard
#if (defined(__clang__) && __clang_major__ < 4) || (!defined(__clang__) && defined(__GNUC__) && __GNUC__ < 5)
#define SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
#endif
TEST_CASE("JSON_DISABLE_TUPLE_REFERENCE_CONVERSION")
{
SECTION("json is not constructible from a one-element tuple of a json reference")
{
CHECK_FALSE(std::is_constructible<json, std::tuple<json&>>::value);
CHECK_FALSE(std::is_constructible<json, std::tuple<const json&>>::value);
CHECK_FALSE(std::is_constructible < json, std::tuple < json && >>::value);
CHECK_FALSE(std::is_constructible<json, const std::tuple<json&>&>::value);
CHECK_FALSE(std::is_constructible<ordered_json, std::tuple<ordered_json&>>::value);
}
#ifndef SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
SECTION("issue #2226 - tuple<const json&> from tuple<json&> keeps the reference")
{
json j = true;
const std::tuple<const json&> tup(std::forward_as_tuple(j));
CHECK(&std::get<0>(tup) == &j);
}
SECTION("tuple<json> from tuple<json&> copies the element")
{
const json j = {{"key", "value"}};
const std::tuple<json> t1(std::forward_as_tuple(j));
CHECK(std::get<0>(t1) == j);
json j2 = "text";
const std::tuple<json> t2(std::forward_as_tuple(std::move(j2)));
CHECK(std::get<0>(t2) == "text");
}
#endif
SECTION("other tuple conversions are not affected")
{
const json j = true;
// one-element tuple holding a json value
CHECK(json(std::make_tuple(j)) == json::array({true}));
// tuples with more than one element, even when holding references
int i = 1;
#ifndef SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
CHECK(json(std::forward_as_tuple(i, j)) == json::array({1, true}));
CHECK(json(std::forward_as_tuple(j, j)) == json::array({true, true}));
#endif
// one-element tuples holding references to other types
std::string s = "text";
CHECK(json(std::forward_as_tuple(s)) == json::array({"text"}));
CHECK(json(std::forward_as_tuple(i)) == json::array({1}));
#ifndef SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
// a reference to a different basic_json specialization
ordered_json oj = true;
CHECK(json(std::forward_as_tuple(oj)) == json::array({true}));
#endif
}
}
-366
View File
@@ -1,366 +0,0 @@
// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++ (supporting code)
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#include "doctest_compatibility.h"
#include <nlohmann/json.hpp>
#include <nlohmann/detail/view/builder.hpp>
#include <nlohmann/detail/view/string_ref.hpp>
using nlohmann::json;
#include <cstdint>
#include <fstream>
#include <memory>
#include <random>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include <test_data.hpp>
namespace
{
using nlohmann::detail::view::document_data;
using nlohmann::detail::view::node;
// the node index of a text; a vector input has no terminating NUL, so that
// AddressSanitizer catches any read past the last byte
struct built
{
std::unique_ptr<document_data, document_data::deleter> data{}; // NOLINT(readability-redundant-member-init)
std::vector<char> copy{}; // NOLINT(readability-redundant-member-init)
bool ok = false;
nlohmann::detail::view::parse_failure failure{};
};
built build(const std::string& text, bool comments, bool trailing_commas, bool sentinel)
{
built r;
r.data.reset(document_data::create(nlohmann::detail::view::estimate_nodes(text.data(), text.size())));
const char* src = text.c_str();
if (!sentinel)
{
r.copy.assign(text.begin(), text.end());
src = r.copy.data();
}
r.ok = nlohmann::detail::view::build < !nlohmann::detail::abi_config::strict_nul_handling > (*r.data, src, text.size(), comments, trailing_commas, sentinel, r.failure);
r.data->src = src;
r.data->base[0] = src;
r.data->base[1] = r.data->arena.data();
return r;
}
// the value of a subtree, as json::parse would build it
json value_of(const document_data& d, const node*& n)
{
const node& x = *n;
++n;
switch (static_cast<json::value_t>(x.kind))
{
case json::value_t::object:
{
json o = json::object();
const node* const end = &x + x.next;
while (n != end)
{
const std::string key(d.str(*n), n->len);
++n;
o[key] = value_of(d, n);
}
return o;
}
case json::value_t::array:
{
json a = json::array();
const node* const end = &x + x.next;
while (n != end)
{
a.push_back(value_of(d, n));
}
return a;
}
case json::value_t::string:
return std::string(d.str(x), x.len);
case json::value_t::boolean:
return (x.flags & nlohmann::detail::view::node_flags::is_true) != 0;
case json::value_t::number_integer:
return static_cast<std::int64_t>(nlohmann::detail::view::integer_bits(x));
case json::value_t::number_unsigned:
return nlohmann::detail::view::integer_bits(x);
case json::value_t::number_float:
return json::parse(std::string(d.src + x.off, x.len)).get<double>();
case json::value_t::null:
case json::value_t::binary:
case json::value_t::discarded:
default:
return nullptr;
}
}
json value_of(const built& b)
{
const node* n = b.data->tape;
json v = value_of(*b.data, n);
CHECK(n == b.data->tape + b.data->tape_size);
return v;
}
// accept/reject and the value must match json::parse, for all options and
// with and without a NUL after the text
void check_same(const std::string& text)
{
CAPTURE(text);
for (int options = 0; options < 4; ++options)
{
const bool comments = (options & 1) != 0;
const bool trailing_commas = (options & 2) != 0;
const bool accepted = json::accept(text, comments, trailing_commas);
for (const bool sentinel :
{
true, false
})
{
const built b = build(text, comments, trailing_commas, sentinel);
CHECK(b.ok == accepted);
if (b.ok && accepted)
{
CHECK(value_of(b) == json::parse(text, nullptr, true, comments, trailing_commas));
}
}
}
}
// a small deterministic generator of documents
struct generator
{
std::mt19937 rng{5295}; // NOLINT(cert-msc32-c,cert-msc51-cpp,bugprone-random-generator-seed)
int r(int n)
{
return static_cast<int>(rng() % static_cast<unsigned>(n));
}
void ws(std::string& o)
{
for (int n = r(4) == 0 ? r(12) : r(2); n > 0; --n)
{
o += " \n\t\r "[r(6)];
}
}
void str(std::string& o)
{
static const char* const pieces[] = {"a", "Z", " ", "~", "\\n", "\\\"", "\\\\", "\\/", "\\u00e9", "\\ud83d\\ude00", "\xc3\xa9", "\xe3\x81\x82", "\xf0\x9f\x98\x80", "\x7f", "\\u001f", "long enough text to leave the first 16 bytes"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
o += '"';
for (int n = r(3) == 0 ? r(20) : r(6); n > 0; --n)
{
o += pieces[r(16)];
}
o += '"';
}
void num(std::string& o)
{
static const char* const numbers[] = {"0", "-0", "1", "-1", "12", "123456789", "1234567890123456789", "9223372036854775807", "-9223372036854775808", // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
"9223372036854775808", "18446744073709551615", "18446744073709551616", "-9223372036854775809",
"1.5", "-2.25e-3", "1e10", "1E+2", "0.000001", "3.141592653589793238462643", "1e308", "-1e-400", "123.456e7"
};
o += numbers[r(22)];
}
void value(std::string& o, int depth)
{
ws(o);
const int k = depth > 5 ? 2 + r(6) : r(8);
if (k == 0 || k == 1)
{
const bool object = k == 0;
o += object ? '{' : '[';
for (int i = r(5); i > 0; --i)
{
ws(o);
if (object)
{
str(o);
ws(o);
o += ':';
}
value(o, depth + 1);
o += i > 1 ? "," : "";
}
ws(o);
o += object ? '}' : ']';
}
else if (k < 4)
{
str(o);
}
else if (k < 6)
{
num(o);
}
else
{
static const char* const literals[] = {"true", "false", "null"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
o += literals[r(3)];
}
ws(o);
}
};
} // namespace
TEST_CASE("json_view string_ref")
{
// std::string_view in C++17, a stand-in with the same members before
using nlohmann::detail::view::string_ref;
const std::string text = "abc";
const string_ref r(text);
CHECK(r.length() == 3);
CHECK(std::string(r.begin(), r.end()) == "abc");
CHECK(r[1] == 'b');
CHECK(r != string_ref("abd"));
CHECK_FALSE(r != string_ref("abcd", 3));
std::ostringstream o;
o << r;
CHECK(o.str() == "abc");
}
TEST_CASE("json_view builder")
{
SECTION("scalars and containers")
{
for (const char* text :
{
"null", "true", "false", "0", "-0", "42", "-42", "1.5", "\"\"", "\"abc\"", "[]", "{}", "[1,2,3]", "{\"a\":1,\"b\":[true,null]}", // NOLINT(modernize-raw-string-literal)
" [ 1 , 2 ] ", "{\"a\" : {\"b\" : {}}}", "[[[]]]", "\"\\u00e4\\n\\ud83d\\ude00\"", "{\"a\":1,\"a\":2}", "18446744073709551616", // NOLINT(modernize-raw-string-literal)
"-9223372036854775809", "123456789012345678901234567890", "1e400", "-1e400", "1.7976931348623157e308"
})
{
check_same(text);
}
// the midpoint between the largest double and 2^1024 rounds to
// infinity (an overflow), one less to the largest double: with more
// than 19 digits, the fast conversions cannot decide these, and the
// overflow check falls back to strtod
const std::string midpoint = "179769313486231580793728971405303415079934132710037826936173778980444968292764750946649017977587207096330286416692887910946555547851940402630657488671505820681908902000708383676273854845817711531764475730270069855571366959622842914819860834936475292719074168444365510704342711559699508093042880177904174497792";
const std::string below = "179769313486231580793728971405303415079934132710037826936173778980444968292764750946649017977587207096330286416692887910946555547851940402630657488671505820681908902000708383676273854845817711531764475730270069855571366959622842914819860834936475292719074168444365510704342711559699508093042880177904174497791";
check_same(midpoint);
check_same("-" + midpoint);
check_same(below);
check_same("[" + below + "," + midpoint + "]");
}
SECTION("malformed input")
{
for (const char* text :
{
"", " ", "[", "]", "{", "}", "[1,]", "{\"a\":1,}", "[1 2]", "{\"a\" 1}", "{1:2}", "tru", "nul", "fals", "truex", "-", "01", "1.", ".5", "1e", "1e+",
"\"", "\"abc", "\"\\x\"", "\"\\u12\"", "\"\\u12G4\"", "\"\\ud800\"", "\"\\udc00\"", "\"\\ud800\\u0041\"", "\"\x01\"", "\"\xff\"", "\"\xc3\"", // NOLINT(modernize-raw-string-literal)
"\"\xe0\x80\x80\"", "\"\xed\xa0\x80\"", "[1]x", "[1] [2]", "/", "/*", "/* */ 1", "// c\n1", "1 // c", "[1,/*c*/2]", "[1,2,]"
})
{
check_same(text);
}
}
SECTION("NUL, BOM, and whitespace")
{
// a NUL inside a string is a control character, as for json::parse
// (where a NUL ends the input, it does so only between values)
for (const bool sentinel :
{
true, false
})
{
const built b = build(std::string("[\"ab\0cd\"]", 9), false, false, sentinel);
CHECK(!b.ok);
CHECK(b.failure.code == nlohmann::detail::view::error_code::string_control_character);
CHECK(b.failure.offset == 4);
}
check_same(std::string("[1]\0garbage", 11));
check_same(std::string("[1\0]", 4));
check_same(std::string("[1, // c\0\n2]", 12));
check_same(std::string("[1, /* c\0 */ 2]", 15));
check_same("\xEF\xBB\xBF[1]");
check_same("\xEF\xBB[1]");
check_same(" \t\r\n 7 \n");
for (const char* text :
{"[1]\r", "[1]\n", "[1]\r\n", "[1,\r2]", "[1,\r\n2]", "7\r", "\"x\"\r", "{\"a\":\r\n1}\r", "[\n 1,\n 2\n]", "{\n \"a\": [\n 1\n ]\n}"
})
{
check_same(text);
}
}
SECTION("deep nesting")
{
// the open containers beyond 64 levels live on the heap
for (const std::size_t depth :
{
63u, 64u, 65u, 1000u, 100000u
})
{
const std::string arrays = std::string(depth, '[') + std::string(depth, ']');
const built b = build(arrays, false, false, false);
REQUIRE(b.ok);
CHECK(b.data->tape_size == depth);
CHECK(b.data->tape[0].next == depth);
std::string objects;
for (std::size_t i = 0; i < depth; ++i)
{
objects += "{\"a\":";
}
objects += '1' + std::string(depth, '}');
const built o = build(objects, false, false, false);
REQUIRE(o.ok);
CHECK(o.data->tape_size == (2 * depth) + 1);
CHECK(!build(std::string(depth, '[') + std::string(depth - 1, ']'), false, false, false).ok);
}
}
SECTION("generated documents and damaged copies")
{
generator g;
for (int i = 0; i < 3000; ++i)
{
std::string text;
g.value(text, 0);
check_same(text);
// damage: flip one byte, or cut the text
std::string damaged = text;
const auto at = static_cast<std::size_t>(g.r(static_cast<int>(damaged.size())));
static const char replacements[] = {'x', '"', '\\', ',', ':', ']', '}', '[', '{', '1', '-', '.', 'e', '\0', '\n', '/'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
damaged[at] = replacements[g.r(16)];
check_same(damaged);
check_same(text.substr(0, at));
}
}
SECTION("test files")
{
for (const char* name :
{
"/json.org/1.json", "/json.org/2.json", "/json.org/3.json", "/json.org/4.json", "/json.org/5.json",
"/json_testsuite/sample.json", "/nativejson-benchmark/canada.json", "/nativejson-benchmark/citm_catalog.json",
"/nativejson-benchmark/twitter.json", "/json_tests/pass1.json", "/json_tests/pass2.json", "/json_tests/pass3.json"
})
{
CAPTURE(name);
std::ifstream f(std::string(TEST_DATA_DIRECTORY) + name, std::ios::binary);
std::stringstream ss;
ss << f.rdbuf();
const std::string text = ss.str();
REQUIRE(!text.empty());
const built b = build(text, false, false, true);
REQUIRE(b.ok);
CHECK(value_of(b) == json::parse(text));
}
}
}
+28
View File
@@ -18,6 +18,19 @@
// for some reason including this after the json header leads to linker errors with VS 2017...
#include <locale>
// skip tests if JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1 (#2226)
#if defined(JSON_DISABLE_TUPLE_REFERENCE_CONVERSION) && (JSON_DISABLE_TUPLE_REFERENCE_CONVERSION == 1)
#define SKIP_TESTS_FOR_TUPLE_REFERENCE_CONVERSION
#endif
// clang before 4 and GCC before 5 cannot create a std::tuple of basic_json
// references at all, with or without JSON_DISABLE_TUPLE_REFERENCE_CONVERSION:
// the tuple constructors make them instantiate basic_json's conversion operator
// for libstdc++'s internal tuple bases, which fails hard
#if (defined(__clang__) && __clang_major__ < 4) || (!defined(__clang__) && defined(__GNUC__) && __GNUC__ < 5)
#define SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
#endif
#define JSON_TESTS_PRIVATE
#include <nlohmann/json.hpp>
using json = nlohmann::json;
@@ -28,6 +41,7 @@ using ordered_json = nlohmann::ordered_json;
#include <cstdio>
#include <list>
#include <tuple>
#include <type_traits>
#include <utility>
@@ -542,6 +556,20 @@ TEST_CASE("regression tests 2")
)));
}
#ifndef SKIP_TESTS_FOR_TUPLE_REFERENCE_CONVERSION
SECTION("issue #2226 - std::tuple dangling reference - implicit conversion")
{
// by default, a one-element tuple holding a json reference converts to
// a one-element array; JSON_DISABLE_TUPLE_REFERENCE_CONVERSION removes
// this conversion (see unit-disable-tuple-reference-conversion.cpp)
const json j = true;
CHECK(std::is_constructible<json, std::tuple<const json&>>::value);
#ifndef SKIP_TESTS_FOR_JSON_REFERENCE_TUPLES
CHECK(json(std::forward_as_tuple(j)) == json::array({true}));
#endif
}
#endif
SECTION("PR #2181 - regression bug with lvalue")
{
// see https://github.com/nlohmann/json/pull/2181#issuecomment-653326060
-3
View File
@@ -8,6 +8,3 @@ The following changes have been made to the code with respect to <https://github
- membership check
- made function from `_is_within`
- removed unused variable `actual_path`
- Added the optional config key `external`: include paths listed there are kept as
`#include` directives instead of being inlined (the first directive per path; the
repeated ones are commented out).
-5
View File
@@ -57,11 +57,6 @@ Python v.2.7.0 or higher is required.
amalgamation. Have a look at `test/source.c.json` and `test/include.h.json`
to see two examples.
The optional `external` list names include paths that are kept as `#include`
directives instead of being inlined, e.g. `["nlohmann/json.hpp"]` for a header
that includes another amalgamated header. Only the first directive for each
of these paths is kept; the repeated ones are commented out.
* The `-s, --source` option should specify the path to the source directory.
This is useful for supporting separate source and build directories.
+5 -23
View File
@@ -62,10 +62,6 @@ class Amalgamation(object):
return None
def __init__(self, args):
# include paths that are kept as #include directives instead of
# being inlined (e.g. a header amalgamated on its own)
self.external = []
self.included_external = []
with open(args.config, 'r') as f:
config = json.loads(f.read())
for key in config:
@@ -224,14 +220,11 @@ class TranslationUnit(object):
while include_match:
if not _is_within(include_match, skippable_contexts):
include_path = include_match.group("path")
if include_path in self.amalgamation.external:
includes.append((include_match, None))
else:
search_same_dir = include_match.group(1) == '"'
found_included_path = self.amalgamation.find_included_file(
include_path, self.file_dir if search_same_dir else None)
if found_included_path:
includes.append((include_match, found_included_path))
search_same_dir = include_match.group(1) == '"'
found_included_path = self.amalgamation.find_included_file(
include_path, self.file_dir if search_same_dir else None)
if found_included_path:
includes.append((include_match, found_included_path))
include_match = self.include_pattern.search(self.content,
include_match.end())
@@ -242,17 +235,6 @@ class TranslationUnit(object):
for include in includes:
include_match, found_included_path = include
tmp_content += self.content[prev_end:include_match.start()]
if found_included_path is None:
# an external header: keep the first directive and comment
# out the repeated ones
include_path = include_match.group("path")
if include_path in self.amalgamation.included_external:
tmp_content += "// {0}".format(include_match.group(0))
else:
self.amalgamation.included_external.append(include_path)
tmp_content += include_match.group(0)
prev_end = include_match.end()
continue
tmp_content += "// {0}\n".format(include_match.group(0))
if found_included_path not in self.amalgamation.included_files:
t = TranslationUnit(found_included_path, self.amalgamation, False)
-9
View File
@@ -1,9 +0,0 @@
{
"project": "JSON for Modern C++",
"target": "single_include/nlohmann/json_view.hpp",
"sources": [
"include/nlohmann/json_view.hpp"
],
"include_paths": ["include"],
"external": ["nlohmann/json.hpp"]
}