move number_precision::none code into a dedicated function

[grisumbras]

No description provided.

[cppalliance-bot]

An automated preview of the documentation is available at https://1198.json.prtest2.cppalliance.org/libs/json/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-09-17 16:09:21 UTC

[cppalliance-bot]

GCOVR code coverage report https://1198.json.prtest2.cppalliance.org/gcovr/index.html
LCOV code coverage report https://1198.json.prtest2.cppalliance.org/genhtml/index.html
Coverage Diff Report https://1198.json.prtest2.cppalliance.org/diff-report/index.html

Build time: 2026-09-17 16:25:26 UTC

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1198/pullrequest.html

[codecov]

Codecov Report

❌ Patch coverage is 66.00791% with 86 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.98%. Comparing base (82398f9) to head (d0227d6).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
include/boost/json/basic_parser_impl.hpp	66.00%	86 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1198      +/-   ##
===========================================
- Coverage    93.72%   92.98%   -0.74%     
===========================================
  Files           85       85              
  Lines         8981     9236     +255     
===========================================
+ Hits          8417     8588     +171     
- Misses         564      648      +84     

Files with missing lines	Coverage Δ
include/boost/json/basic_parser.hpp	100.00% <ø> (ø)
include/boost/json/basic_parser_impl.hpp	93.25% <66.00%> (-5.43%)	⬇️

... and 2 files with indirect coverage changes

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[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1198/pullrequest.html