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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>
28 lines
929 B
C++
28 lines
929 B
C++
#include <iostream>
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#include <string>
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#include <nlohmann/json.hpp>
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using nlohmann::json;
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int main()
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{
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// the same JSON text, given in different encodings
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const std::string utf8 = "{\"name\":\"\u00e9\"}";
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const std::u16string utf16 = u"{\"name\":\"\u00e9\"}";
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const std::u32string utf32 = U"{\"name\":\"\u00e9\"}";
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const std::wstring wide = L"{\"name\":\"\u00e9\"}";
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// the encoding is deduced from the character type of the input, and all
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// of them yield the same value
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std::cout << json::parse(utf8) << '\n'
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<< json::parse(utf16) << '\n'
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<< json::parse(utf32) << '\n'
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<< json::parse(wide) << '\n';
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// a wide string literal works as well: u"..." is UTF-16, U"..." is UTF-32
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std::cout << json::parse(u"[1, 2, 3]") << '\n';
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// iterators over wide characters work as well
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std::cout << json::parse(utf16.begin(), utf16.end()) << '\n';
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}
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