Refactoring of conversion functions

[grisumbras]

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

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Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[codecov[bot]]

Codecov Report

Merging #686 (ce144b5) into develop (9fc23d6) will increase coverage by 0.00%. The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #686   +/-   ##
========================================
  Coverage    99.13%   99.13%           
========================================
  Files           69       69           
  Lines         6584     6587    +3     
========================================
+ Hits          6527     6530    +3     
  Misses          57       57           

Impacted Files	Coverage Δ
include/boost/json/impl/value_ref.hpp	100.00% <ø> (ø)
include/boost/json/detail/value_from.hpp	100.00% <100.00%> (ø)
include/boost/json/detail/value_to.hpp	100.00% <100.00%> (ø)
include/boost/json/detail/value_traits.hpp	100.00% <100.00%> (ø)
include/boost/json/value_from.hpp	100.00% <100.00%> (ø)
include/boost/json/value_to.hpp	100.00% <100.00%> (ø)

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[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

An automated preview of the documentation is available at https://686.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/686/pullrequest.html

[vinniefalco]

This needs exposition in the docs

[vinniefalco]

@pdimov did you review this?