Add option to skip C++ metrics calculations for lambdas and nested classes

[barnabasdomozi]

• Changed CppRecord parsing: we now also store an isLambda and context attribute
• Changed CppServiceHandler::getProperties to display the new attributes
• Added CLI options --cppmetrics-ignore-lambdas and --cppmetrics-ignore-nested-classes to skip C++ metrics calculations in those cases
• These new CLI options are considered when calculating: lackOfCohesion, efferentTypeLevel, afferentTypeLevel

[Copilot]

Pull Request Overview

This PR introduces the ability to skip certain C++ metrics (lack of cohesion, efferent/afferent coupling) for lambdas and nested classes via two new CLI options. It updates the parser to record isLambda and declaration context, filters queries based on the new options, surfaces the new attributes in the service output, and adds corresponding test changes.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
plugins/cpp_metrics/parser/src/cppmetricsparser.cpp	Added getCohesionRecordQuery, integrated option‐based filters, and registered two new CLI flags
plugins/cpp_metrics/parser/include/cppmetricsparser/cppmetricsparser.h	Declared getCohesionRecordQuery and added required includes
plugins/cpp/service/src/cppservice.cpp	Extended getProperties to include Lambda and Context fields
plugins/cpp/parser/src/clangastvisitor.h	Populated CppRecord::isLambda and context based on parent DeclContext
plugins/cpp/model/include/model/cpprecord.h	Added isLambda, Context enum, and getContextString()
plugins/cpp/test/src/cpppropertiesservicetest.cpp	Updated expected properties to include Context

Comments suppressed due to low confidence (3)

plugins/cpp/service/src/cppservice.cpp:337

• [nitpick] The property key "Lambda" is less descriptive compared to other boolean flags (e.g., "Abstract type", "POD type"). Consider renaming it to something like "Is Lambda" or "Lambda expression" for consistency and clarity.

            return_["Lambda"] = "true";

plugins/cpp/test/src/cpppropertiesservicetest.cpp:83

• There are no tests verifying the new Lambda property when type.isLambda is true. Consider adding a test case that simulates a lambda record and checks for "Lambda" : "true" in the output map.

TEST_F(CppPropertiesServiceTest, ClassPropertiesTest)

plugins/cpp_metrics/parser/src/cppmetricsparser.cpp:717

• [nitpick] The CLI option descriptions mention skipping specific metrics but could be clearer about all three metrics affected. Consider rephrasing to explicitly list or group the three metrics affected for both options.

      "Skip Efferent/Afferent Coupling, Lack of Cohesion C++ metrics calculations for lambdas.")

[Copilot]

The switch in getContextString() covers all enum cases but has no default or final return, which can trigger a missing-return warning. Consider adding a default case or a return after the switch to handle unexpected values.

[mcserep]

Great work! 👏