catch3/src/catch2/internal/catch_jsonwriter.cpp, branch v3.15.1 Progmasoft Catch3: an independently maintained C++17 test framework with a parallel runner, property checks, snapshots and structured results. Improve performance of writing JSON values 2025-08-22T15:00:40+00:00 Martin Hořeňovský 2025-08-21T21:36:22+00:00 fb2e4fbe413824a5cad4101c0e94cb10b7828f0d The old code was exceedingly simple, as it went char-by-char and decided whether to write it to the output stream as-is, or escaped. This caused a _lot_ of stream writes of individual characters. The new code instead looks for characters that need escaping, and bulk-writes the non-escaped characters in between them. This leads to about the same performance for strings that comprise of only escaped characters, and 3-10x improvement for strings without any escaping needed. In practice, we should expect the former rather than the latter, but this is still nice improvement. 
The old code was exceedingly simple, as it went char-by-char and
decided whether to write it to the output stream as-is, or escaped.
This caused a _lot_ of stream writes of individual characters.

The new code instead looks for characters that need escaping, and
bulk-writes the non-escaped characters in between them. This leads
to about the same performance for strings that comprise of only
escaped characters, and 3-10x improvement for strings without any
escaping needed.

In practice, we should expect the former rather than the latter,
but this is still nice improvement.
Fix various useful clang-tidy warnings 2024-03-01T20:24:45+00:00 Martin Jeřábek 2024-03-01T10:15:27+00:00 cde35096641d55b4aa0f743bb03e04703fbb5e9c * bugprone-branch-clone * bugprone-copy-constructor-init * bugprone-empty-catch * bugprone-sizeof-expression * bugprone-switch-missing-default-case * bugprone-unused-local-non-trivial-variable * clang-analyzer-core.uninitialized.Assign * clang-analyzer-cplusplus.Move * clang-analyzer-optin.cplusplus.VirtualCall * modernize-loop-convert * modernize-raw-string-literal * modernize-use-equals-default * modernize-use-override * modernize-use-using * performance-avoid-endl * performance-inefficient-string-concatenation * performance-inefficient-vector-operation * performance-noexcept-move-constructor * performance-unnecessary-value-param (and improve generator example) * readability-duplicate-include * readability-inconsistent-declaration-parameter-name * readability-non-const-parameter * readability-redundant-casting * readability-redundant-member-init * readability-redundant-smartptr-get * readability-static-accessed-through-instance * unused variable in amalgamted tests 
* bugprone-branch-clone
* bugprone-copy-constructor-init
* bugprone-empty-catch
* bugprone-sizeof-expression
* bugprone-switch-missing-default-case
* bugprone-unused-local-non-trivial-variable
* clang-analyzer-core.uninitialized.Assign
* clang-analyzer-cplusplus.Move
* clang-analyzer-optin.cplusplus.VirtualCall
* modernize-loop-convert
* modernize-raw-string-literal
* modernize-use-equals-default
* modernize-use-override
* modernize-use-using
* performance-avoid-endl
* performance-inefficient-string-concatenation
* performance-inefficient-vector-operation
* performance-noexcept-move-constructor
* performance-unnecessary-value-param (and improve generator example)
* readability-duplicate-include
* readability-inconsistent-declaration-parameter-name
* readability-non-const-parameter
* readability-redundant-casting
* readability-redundant-member-init
* readability-redundant-smartptr-get
* readability-static-accessed-through-instance
* unused variable in amalgamted tests
JSONWriter deals in StringRefs instead of std::strings 2023-11-17T08:54:03+00:00 Martin Hořeňovský 2023-11-16T21:17:21+00:00 32d9ae24bc4a0fed9a136a73e116b4ded0ac84b7 Together with liberal use of `_sr` UDL to compile-time convert string literals into StringRefs, this will reduce the number of allocation and remove most of the strcpy calls inherent in converting string lits into `std::string`s. 
Together with liberal use of `_sr` UDL to compile-time convert
string literals into StringRefs, this will reduce the number of
allocation and remove most of the strcpy calls inherent in
converting string lits into `std::string`s.
Add JSON reporter (#2706) 2023-11-14T21:52:15+00:00 Beartama 2023-11-14T21:52:15+00:00 7bf136b501fef3e189b45091e8a4757a5eaef31f Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com> 

Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>