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Niels Lohmann
330fbead59
* Document clang-tidy exclusions and drop unneeded ones Re-enable every excluded check in a run of clang-tidy 22 over all tests and remove the seven that never fire (cert-err58-cpp, clang-analyzer-webkit.NoUncountedMemberChecker, cppcoreguidelines-virtual-class-destructor, google-readability-function-size, hicpp-function-size, hicpp-no-assembler, readability-function-size). Document the reason for every remaining exclusion at the top of the file. Exclude in advance the checks that only exist in clang-tidy 23 and are noise here (bugprone-signed-bitwise, *-explicit-constructor, readability-trailing-comma, modernize-use-string-view), plus modernize-use-integer-sign-comparison, which needs C++20 std::cmp_less and flags deliberate casts. Signed-off-by: Niels Lohmann <mail@nlohmann.me> * Fix clang-tidy findings in documentation examples and replace redundant aliases Apply clang-tidy fixes to the documentation examples: - performance-avoid-endl: std::endl -> '\n' - readability-qualified-auto: auto -> auto* / const auto* - performance-for-range-copy: copy -> const reference - google-readability-casting: C-style cast -> static_cast Replace redundant aliases (readability-redundant-qualified-alias) such as "using json = nlohmann::json;" with "using nlohmann::json;" in the documentation, README, examples, tests, and benchmarks. Aliases at class scope and aliases of other types (with_base_class_t etc.) are kept. No changes to the library or its public API. All changed examples were compiled and run; their output matches the stored .output files (except max_size and meta, which depend on the platform and compiler). Signed-off-by: Niels Lohmann <mail@nlohmann.me> * Format doc examples with the pinned astyle Signed-off-by: Niels Lohmann <mail@nlohmann.me> --------- Signed-off-by: Niels Lohmann <mail@nlohmann.me>
38 lines
1.5 KiB
C++
38 lines
1.5 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.12.0
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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// cmake/test.cmake selects the C++ standard versions with which to build a
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// unit test based on the presence of JSON_HAS_CPP_<VERSION> macros.
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// The regression below only showed on C++17, so build this file for every
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// standard like the other regression tests:
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// JSON_HAS_CPP_17 JSON_HAS_CPP_20 (do not remove; see note at top of file)
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#include "doctest_compatibility.h"
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#include <nlohmann/json.hpp>
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using nlohmann::json;
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/////////////////////////////////////////////////////////////////////
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// for #4825 - explicitly instantiating basic_json must compile; this
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// forces instantiation of binary_writer::write_bjdata_ndarray, whose
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// static_cast<string_t> was ambiguous under explicit instantiation on
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// C++17. Merely compiling this translation unit is the regression test.
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//
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// The instantiation compiles every member function, so it has a file of its
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// own: in unit-regression3.cpp it made the object too large for the MinGW
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// linker to relocate (see #5511).
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/////////////////////////////////////////////////////////////////////
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template class nlohmann::basic_json<>;
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TEST_CASE("explicit instantiation of basic_json (#4825)")
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{
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const json j = {1, "two", 3.0};
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CHECK(j.size() == 3);
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CHECK(json::from_bjdata(json::to_bjdata(j)) == j);
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}
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