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json_view: one SIMD macro set with the library

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The view's vector code follows JSON_NO_SIMD, like the lexer and the float
writer, and skips the CPU check of SSSE3 when the code is compiled for
SSSE3 anyway (__SSSE3__), like the lexer. JSON_VIEW_NO_SIMD and
JSON_VIEW_USE_SSSE3 and their ABI tags _vns and _vssse3 are removed; they
were never released. JSON_NO_SIMD keeps its tag _ns.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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Niels Lohmann committed 2026-10-26 07:12:16 +01:00
1 parent 0f2b3ae6d5
commit e6d8a0067b
24 files changed
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tools/generate_natvis/README.md
+4 -4
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@@ -34,11 +34,11 @@ version other than the one in `abi_macros.hpp`.
| Option | Description |
|-------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `--list-tags` | Print every ABI tag (in namespace order) with the macro that enables it and the `NLOHMANN_JSON_ABI_TAG_*` identifier, then exit. |
| `--abi-tags TAGS` | Add the namespaces of one configuration, given as a comma-separated list of ABI tags (`_diag,_dp,_vns`; the leading underscore is optional, and the order does not matter). Can be repeated for several configurations. Unknown tags are an error. |
| `--abi-tags TAGS` | Add the namespaces of one configuration, given as a comma-separated list of ABI tags (`_diag,_dp,_ns`; the leading underscore is optional, and the order does not matter). Can be repeated for several configurations. Unknown tags are an error. |
| `--all` | Generate the namespaces for every combination of ABI tags. The file size doubles with each tag (about 60 MB for 12 tags). Cannot be combined with `--abi-tags`. |
| `--output FILE` | Write the Natvis file to `FILE` instead of `nlohmann_json.natvis` in the repository root. |
Each configuration gets both the versioned (`json_abi_diag_dp_vns_v3_12_0`) and the unversioned (`json_abi_diag_dp_vns`,
Each configuration gets both the versioned (`json_abi_diag_dp_ns_v3_12_0`) and the unversioned (`json_abi_diag_dp_ns`,
used with `NLOHMANN_JSON_NAMESPACE_NO_VERSION`) namespace. The default namespaces (up to two ABI tags) are always
included, so a generated file can replace the checked-in one.
@@ -52,10 +52,10 @@ included, so a generated file can replace the checked-in one.
```
3. Generate a Natvis file with them, for example for `JSON_DIAGNOSTICS`, `JSON_DIAGNOSTIC_POSITIONS`, and
`JSON_VIEW_NO_SIMD`:
`JSON_NO_SIMD`:
```shell
make natvis NATVIS_ARGS="--abi-tags _diag,_dp,_vns --output my_nlohmann_json.natvis"
make natvis NATVIS_ARGS="--abi-tags _diag,_dp,_ns --output my_nlohmann_json.natvis"
```
4. Use `my_nlohmann_json.natvis` instead of the shipped `nlohmann_json.natvis`, for example by adding it to your Visual
tools/generate_natvis/generate_natvis.py
+1 -1
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@@ -91,7 +91,7 @@ if __name__ == '__main__':
'include/nlohmann/detail/abi_macros.hpp below "repo_root")')
selection = parser.add_mutually_exclusive_group()
selection.add_argument('--abi-tags', action='append', default=[], metavar='TAGS',
help='Comma-separated list of ABI tags (e.g. "_diag,_dp,_vns", leading underscores are '
help='Comma-separated list of ABI tags (e.g. "_diag,_dp,_ns", leading underscores are '
'optional) of one configuration to add to the default namespaces; can be repeated')
selection.add_argument('--all', action='store_true',
help='Generate the namespaces for every combination of ABI tags; the file size doubles '