feat: constexpr URL parsing for C++20

[alandefreitas]

fix #890

[cppalliance-bot]

An automated preview of the documentation is available at https://976.url.prtest2.cppalliance.org/index.html

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

2026-02-19 22:40:15 UTC

[cppalliance-bot]

GCOVR code coverage report https://976.url.prtest2.cppalliance.org/gcovr/index.html
LCOV code coverage report https://976.url.prtest2.cppalliance.org/genhtml/index.html
Coverage Diff Report https://976.url.prtest2.cppalliance.org/diff-report/index.html

Build time: 2026-02-19 22:47:40 UTC

[codecov]

Codecov Report

❌ Patch coverage is 99.31973% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.12%. Comparing base (968127f) to head (0a2c39f).
⚠️ Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
include/boost/url/detail/memcpy.hpp	66.66%	2 Missing ⚠️
include/boost/url/impl/params_encoded_ref.hpp	97.36%	2 Missing ⚠️
include/boost/url/impl/params_ref.hpp	97.84%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #976      +/-   ##
===========================================
+ Coverage    99.11%   99.12%   +0.01%     
===========================================
  Files          162      155       -7     
  Lines        10027    10043      +16     
===========================================
+ Hits          9938     9955      +17     
+ Misses          89       88       -1     

Files with missing lines	Coverage Δ
doc/modules/ROOT/examples/unit/snippets.cpp	97.31% <100.00%> (+0.01%)	⬆️
include/boost/url/authority_view.hpp	100.00% <100.00%> (ø)
include/boost/url/detail/any_params_iter.hpp	100.00% <ø> (ø)
include/boost/url/detail/any_segments_iter.hpp	98.50% <ø> (ø)
include/boost/url/detail/fnv_1a.hpp	100.00% <100.00%> (ø)
include/boost/url/detail/impl/any_params_iter.hpp	99.40% <ø> (ø)
...nclude/boost/url/detail/impl/any_segments_iter.hpp	100.00% <ø> (ø)
include/boost/url/detail/impl/params_iter_impl.hpp	97.58% <ø> (ø)
...clude/boost/url/detail/impl/segments_iter_impl.hpp	99.19% <ø> (ø)
include/boost/url/detail/impl/url_impl.hpp	97.40% <100.00%> (ø)
... and 97 more

... and 2 files with indirect coverage changes

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