Commit Graph
3 Commits
Author SHA1 Message Date
Niels Lohmann 330fbead59 Document clang-tidy exclusions, drop unneeded ones, and clean up doc examples (#5909)
* 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>

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-25 12:07:51 +01:00
Niels Lohmann 734fd305a1 Format-check the documentation examples in CI (#5386)
* Reformat parser_callback_t example with astyle

The file uses "json & /*parsed*/" in three lambda parameter lists, which
astyle rewrites to "json& /*parsed*/" per --align-reference=type. The
drift went unnoticed because CI never format-checked the documentation
examples; "make pretty" does cover them.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Format-check the documentation examples in CI

The examples live in docs/mkdocs/docs/examples, but both format checks
still referenced the long-gone docs/examples path:

- check_amalgamation.yml passed it to find, which printed an error for
  the missing path and carried on, so astyle only ever saw include and
  tests. The step still exited 0.
- ci.cmake globbed it into INDENT_FILES, and a GLOB_RECURSE over a
  missing directory silently yields nothing, so the ci_test_amalgamation
  target skipped the examples too.

Either way the 231 example files have never been format-checked. Point
both at the real path, and guard the workflow with an explicit directory
check so a future rename fails the job instead of quietly shrinking the
file list again.

Also drop the dead docs/examples/** path filter from
publish_documentation.yml; docs/mkdocs/** already covers the examples.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-08-20 12:32:50 +02:00
Niels Lohmann 1c63a120b6 docs: document how discarded values are removed by the parser callback (#5354)
Follow-up to #5342, which fixed the parser callback leaving a discarded
member behind when an array or a value under an object key was rejected.
The documentation of parser_callback_t only stated that discarded values
in structured types are skipped, without saying that this covers object
parents and that the key is removed along with the value, so there was no
way to tell the fixed behavior from the buggy one.

Spell out the discarding rules, add an example that exercises the cases
the fix repaired, and correct the return value description: a discarded
top-level value is replaced by null, not by "an empty discarded object".

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-08-04 08:45:02 +02:00