fix(log): update CXX log trace guard

[Lzw655]

Bugfixes:

• fix(log): update CXX log trace guard
• fix(repo): forcing compiling CXX files with GNU++20 @martinroger (Forcing compiling CXX files with GNU++20 #13)

[Copilot]

Pull Request Overview

This PR refactors the logging subsystem to use a C++ RAII-based trace guard, centralizes file-name extraction in C++ code, and updates related logging macros across backends.

• Replaces C-style trace guard macros with a log_trace_guard class leveraging std::source_location.
• Renames and consolidates backend macros (STD and ESP) to _IMPL_FUNC and _IMPL variants.
• Removes the old C implementation of esp_utils_log_extract_file_name and adds a C++ version plus a parseFunctionName helper.

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test_apps/main/test_on_cpp.cpp	Adds a LogTestClass and exercises the new C++ trace guard.
src/log/impl/esp_utils_log_impl_std.h	Refactors STD backend macros (ESP_UTILS_LOG*_IMPL[_FUNC]).
src/log/impl/esp_utils_log_impl_esp.h	Refactors ESP backend macros to match the STD pattern.
src/log/impl/esp_utils_log_impl.cpp	Introduces C++ esp_utils_log_extract_file_name and parseFunctionName.
src/log/impl/esp_utils_log_impl.c	Removes the old C version of esp_utils_log_extract_file_name.
src/log/esp_utils_log.hpp	Defines log_trace_guard class and new trace guard macros.
src/log/esp_utils_log.h	Updates ESP_UTILS_LOG_LEVEL to use _IMPL macros.
src/esp_utils_versions.h	Bumps patch version to 0.2.3.
library.properties	Updates library version to 0.2.3.
idf_component.yml	Updates component version to "0.2.3".
CHANGELOG.md	Adds v0.2.3 entry for the C++ trace guard update.

Comments suppressed due to low confidence (4)

src/log/impl/esp_utils_log_impl.cpp:33

• The new parseFunctionName function contains non-trivial parsing logic; adding unit tests to cover various signature formats (with/without namespaces and templates) would help prevent regressions.

std::string parseFunctionName(const char *func_name)

src/log/esp_utils_log.hpp:53

• [nitpick] The log_trace_guard template and its constructors aren’t documented. Consider adding Doxygen comments explaining the TAG parameter and overload behaviors.

template <FixedString TAG>

test_apps/main/test_on_cpp.cpp:15

• [nitpick] The test helper class LogTestClass has a generic name. Renaming it to reflect its purpose (e.g., TraceGuardTester) could improve readability in larger test suites.

class LogTestClass {

[Copilot]

[nitpick] The pair of macros _IMPL_FUNC and _IMPL can be confusing to maintain. Adding a brief comment or renaming to clarify their distinct roles (format-wrapping vs. tagged invocation) may aid future contributors.