improve json reading/writting

[mrabine]

No description provided.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.03%	✅ 98.65%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (1d0ab67)	9192	8882	96.63%
Head commit (ac901ef)	9202 (+10)	8889 (+7)	96.60% (-0.03%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#92)	148	146	98.65%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

❌ Patch coverage is 98.63946% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.68%. Comparing base (1d0ab67) to head (ac901ef).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
join/sax/include/join/json.hpp	98.38%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #92      +/-   ##
==========================================
- Coverage   96.71%   96.68%   -0.04%     
==========================================
  Files          71       71              
  Lines        8592     8604      +12     
==========================================
+ Hits         8310     8319       +9     
- Misses        282      285       +3     

Flag	Coverage Δ
unittests	96.68% <98.63%> (-0.04%)	⬇️

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[coveralls]

Pull Request Test Coverage Report for Build 20005715047

Details

• 146 of 148 (98.65%) changed or added relevant lines in 2 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 96.599%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
join/sax/include/join/json.hpp	123	125	98.4%

Files with Coverage Reduction	New Missed Lines	%
join/sax/include/join/json.hpp	3	91.37%

Totals
Change from base Build 19948941552:	-0.03%
Covered Lines:	8889
Relevant Lines:	9202

---

💛 - Coveralls