Commit Graph

15 Commits

Author SHA1 Message Date
Niels Lohmann f23b3c63a2 Add AST-based public API checker and fix documentation gaps it found (#3691)
Adds tools/api_checker/: extract_api.py derives the public API surface directly
from the libclang AST (independent of documentation status), check_docs.py flags
public entries missing @sa links (and @sa on non-public ones), diff_api.py does
an overload-aware breaking/feature diff between two refs, check_macros.py cross-
checks documented macros against #define sites, and snapshot_release.py backfills
immutable per-release surface snapshots into tools/api_checker/history/ (v3.1.0
through v3.12.0) so diff_api.py can compare releases without live extraction.
POLICY.md documents what counts as public API and what stability is guaranteed.

Running this tooling against the current tree found and fixed a real documentation
backlog: ~25 new API doc pages (ordered_map's methods, json_sax's ctor/dtor/
operator=, byte_container_with_subtype's comparison operators, several orphaned
type aliases), each with a compiled and output-verified example, plus missing
@sa comments and stale/incorrect Version History entries on several existing
pages (found by diffing consecutive release pairs and checking whether the
resulting change was actually reflected in the target page's history section).

Also adds docs/home/api_changes.md, a per-release, per-function reference of
public API changes (v3.1.0 through v3.12.0) generated from the history/
snapshots, complementing (not replacing) the existing release notes.

Along the way, found and fixed several extractor bugs by testing against real
release tags rather than trusting the algorithm in isolation -- most notably an
identity-key scheme based on libclang's USR that encoded the enclosing class
template's own arity, and a since-renamed ABI inline-namespace pattern
(json_v3_11_0 vs. today's json_abi_v3_11_2) that neither of two earlier regex
attempts stripped correctly. Both are documented in extract_api.py's docstrings
and tools/api_checker/history/README.md so the failure mode doesn't recur
silently.

.github/workflows/check_api_docs.yml runs extract_api.py + check_docs.py in CI,
advisory-only for now (documented backlog may not be at zero for entities this
PR didn't touch), plus a blocking drift check on the committed
tools/api_checker/api_surface.json.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-07-11 18:59:00 +02:00
Niels Lohmann 631e667fe5 Document a duplicate-object-key rejection recipe (#5259)
* 📡 Document a duplicate-object-key rejection recipe

RFC 8259 leaves handling of duplicate object keys to the implementation;
this library silently keeps only the last value for a repeated key.
Discussion #5085 asked for an opt-in rejection mode. Decision: don't
change library behavior, but document the existing parser-callback
workaround instead.

Adds a "Recipe: rejecting duplicate object keys" section to
parser_callbacks.md, adapted from a community-contributed workaround.
Fixed an off-by-one bug in the original snippet: object_start reports
the depth of the object's parent, while key events inside that object
report depth+1, so indexing the per-depth key set with the same depth
in both places caused an out-of-bounds access on nested objects.
Verified the published snippet compiles and behaves correctly for flat
duplicates, nested duplicates, sibling objects sharing key names, and
arrays of objects.

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

* Cross-link the duplicate-key recipe with the existing object_t behavior docs

object_t.md and features/types/index.md already document that duplicate
object keys resolve to an unspecified value (RFC 8259 leaves this to the
implementation). The new recipe's intro overstated this as a guaranteed
"last value wins" rule, which isn't true in general -- parsing text keeps
the last value, but constructing from an initializer list keeps the first.
Reworded the recipe to point at object_t's "unspecified" behavior instead
of asserting a specific rule, and added cross-links from both existing
pages to the new recipe.

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

* Turn the duplicate-key recipe into a standalone, compiled example

Replace the inline code fence in the "rejecting duplicate object keys"
recipe with a proper docs/mkdocs/docs/examples/*.cpp + .output pair,
included via --8<-- like every other example on the site. The .output
file was generated by running it through the project's actual example
build (docs/Makefile: single_include, -std=c++11, -DJSON_USE_GLOBAL_UDLS=0)
and cross-checked with `make check_output`, and the source passes the
pinned astyle 3.4.13 formatting unchanged.

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

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-07-09 20:39:59 +02:00
Niels Lohmann 8d7e0046f4 Add std::format and fmt support (#5224)
*  add std::format and fmt support

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

* ♻️ reorganize PR

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

* 🧛 fix build

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

* 🧛 fix build

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

* 🧛 fix build

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

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-07-02 15:59:36 +02:00
Caillin Nugent 58cfecf7f7 Serialize enum (#5151)
* Added NLOHNMANN_JSON_SERIALIZE_ENUM_STRICT
- duplicate of NLOHMANN_JSON_SERIALIZE_ENUM

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* Added failing tests for NLOHMANN_JSON_SERIALIZE_ENUM_STRICT

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* modified NLOHMANN_JSON_SERIALIZE_STRICT to throw

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* added documentation and changed readme to include NLOHMANN_JSON_SERIALIZE_ENUM_STRICT

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* ran amalgamate

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* docs(macros): add page for JSON_SERIALIZE_ENUM_STRICT
- added page to nav
- added links to new page where appropriate

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* refactor(macros): make JSON_SERIALIZE_ENUM_STRICT use JSON_THROW
- added templated wrapper function to fix scope error in calling JSON_THROW

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* refactor(macros): make NLOHMANN_SERIALIZE_ENUM_STRICT use error code 410
- added error code 410 to docs

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* tests(macros): add test for to_json with enum value not mentioned
	       in mapping for NLOHMANN_JSON_SERIALIZE_ENUM_STRICT

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* Apply suggestions from code review

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
Signed-off-by: Caillin Nugent <nugentcaillin@gmail.com>

* fix(macro): prevent compilation error with -Werror and -Wunused-parameter
            with NLOHMANN_JSON_SERIALIZE_ENUM_STRICT
- casted exception to void to avoid warning

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* fix(docs): add link to NLOHMANN_SERIALIZE_ENUM_STRICT docs to exception page

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* docs(macros): add example of exception throwing for NLOHMANN_JSON_SERIALIZE_ENUM_STRICT

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

* refactor(macros): add more in-depth error message to NLOHMANN_JSON_SERIALIZE_ENUM_STRICT
- changed error message to follow style of nlohmann/json#4989
- made description of throw wrapper more general
- updated tests and example of exceptions

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>

---------

Signed-off-by: Caillin Nugent <caillinn@student.unimelb.edu.au>
Signed-off-by: Caillin Nugent <nugentcaillin@gmail.com>
Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
2026-05-18 20:37:07 +02:00
George Sedov cba5dc0ed8 New macros for the named JSON convertor generation (#4563)
* Add new macros for named conversions

* Unit tests for the named conversion macros

* Update the docs to include the new macros

* Fix the documentation for the macros

the correct maximum number of member variables is 63

* Fix CI tests

* update the named macros

* move the example files

* update the explicit macros expansion

* update documentation

* fix documentation hiccups

* astyle changes

* add static analysis exceptions

* change md header to explicit html to fit the length

* Small corrections to docs

Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
Signed-off-by: George Sedov <radist.morse@gmail.com>

---------

Signed-off-by: George Sedov <radist.morse@gmail.com>
Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
2026-05-16 10:04:22 +02:00
trdesilva a0a4e7cc0b Add front methods to json_pointers (implements #4889) (#5152)
* Added front, pop_front, and push_front methods to json_pointers in order to facilitate root-to-leaf traversals of JSON object trees. (#4889)

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

* undid VS autoformatting in irrelevant code

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

* Ran make amalgamate, added navigation to json_pointer's new front methods in mkdocs, and fixed errors in documented complexity for those methods.

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

* Fixed GCC 4.8 compile error caused by const iterators

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

* Fixed another gcc-4.8 compile error

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

* amalgamated

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>

---------

Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>
2026-05-13 07:59:16 +02:00
Niels Lohmann 515d994acb 🦉 adjust year (#5044)
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-01-01 20:00:39 +01:00
Andy Choi cda9c1e3bd Use get instead of template get in REAMD.md and docs in non-template context (#4846)
Signed-off-by: Andy Choi <ccpong516@gmail.com>
2025-10-30 10:23:04 +01:00
co63oc 44bee1b138 chore: fix typos (#4921)
Signed-off-by: co63oc <co63oc@users.noreply.github.com>
2025-09-16 08:07:00 +02:00
chirsz 4b17f90f65 Add ignore_trailing_commas option (#4609)
Added examples and modified the corresponding documents and unit tests.

Signed-off-by: chirsz-ever <chirsz-ever@outlook.com>
Co-authored-by: Niels Lohmann <niels.lohmann@gmail.com>
2025-05-22 08:01:46 +02:00
Niels Lohmann 1705bfe914 🔫 set version to 3.12.0 (#4727)
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2025-04-11 10:41:14 +02:00
Niels Lohmann e90c860d53 Add note on derived return type for value function (#4628)
* 📡 add note on derived return type

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

* 📡 add note on derived return type

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

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2025-01-26 18:40:55 +01:00
Harinath Nampally d23291ba26 use diagnostic positions in exceptions (#4585)
* add a ci step for Json_Diagnostic_Positions

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* Update ci.cmake to address review comments

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* address review comment

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix typo in the comment

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix typos in ci.cmake

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* invoke the new ci step from ubuntu.yml

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* issue4561 - use diagnostic positions for exceptions

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix ci_test_documentation check

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* address review comments

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix ci check failures for unit-diagnostic-postions.cpp

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* improvements based on review comments

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix const correctness string

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* further refinements based on reviews

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* add one more test case for full coverage

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* ci check fix - add const

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* add unit tests for json_diagnostic_postions only

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix ci_test_diagnostics

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

* fix ci_test_build_documentation check

Signed-off-by: Harinath Nampally <harinath922@gmail.com>

---------

Signed-off-by: Harinath Nampally <harinath922@gmail.com>
2025-01-19 10:42:21 +01:00
kimci86 8a882f32ed Generate template functions with NLOHMANN_DEFINE_TYPE macros (#4597)
* Support any basic_json type in NLOHMANN_DEFINE_TYPE_* macros

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Test NLOHMANN_DEFINE_TYPE_* macros also support unordered_json

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Simplify test about NLOHMANN_DEFINE_TYPE_ with many arguments

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Remove extra scope in macros tests

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Remove unused test class in macros tests

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Update documentation about NLOHMANN_DEFINE_TYPE_* macros

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Fix NLOHMANN_JSON_SERIALIZE_ENUM documentation

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Mark some variables const in macros tests, fixes clang-tidy

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Workaround clang 3.5 issue with const object initialization

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Update highlighted lines in NLOHMANN_DEFINE_TYPE_* macros examples

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Fix swapped macros in documentation

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Remove extra backslashes at the end of macros

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Require basic_json type in NLOHMANN_DEFINE_TYPE_* generated functions

Signed-off-by: kimci86 <kimci86@hotmail.fr>

* Fix typos in macros documentation

Signed-off-by: kimci86 <kimci86@hotmail.fr>

---------

Signed-off-by: kimci86 <kimci86@hotmail.fr>
2025-01-18 22:59:09 +01:00
Niels Lohmann 26cfec34be Clean up and document project files (#4560) 2025-01-17 06:53:35 +01:00