cpp-development

CIEL ADAPTATION: C++ Development (Core Guidelines)

This skill formalizes the use of modern C++ (C++17/20+). it prioritizes resource safety (RAII) and the C++ Core Guidelines.

The Integrity Layer (RAII)

1. No Raw Ownership: Never transfer ownership via raw pointers (T*). Use std::unique_ptr or std::shared_ptr.
2. Resource Binding: Bind all resource lifetimes (Files, Locks, Sockets) to object lifetimes via RAII classes.
3. Smart Allocation: Avoid new and delete. Use std::make_unique and std::make_shared.

Architectural Standards

• Immutability: Declaring objects const or constexpr by default. Member functions must be const unless they mutate state.
• Type Safety: Use enum class over plain enum. Prohibit C-style casts; use static_cast or dynamic_cast.
• Interfaces: Pass "in" parameters by value for cheap types and const& for expensive types.

TDD & Verification

• Framework: GoogleTest (gtest) + GoogleMock (gmock).
• CMake/CTest: Use gtest_discover_tests() for stable discovery. Run with --output-on-failure.
• Sanitizers: ALWAYS run tests with AddressSanitizer (ASan) and UndefinedBehaviorSanitizer (UBSan) in CI.

Anti-Patterns

• Naked New: Calling new without immediately wrapping it in a smart pointer or RAII class.
• Global Variables: Using non-const globals (violates I.2).
• Implicit Conversions: Allowing narrowing/lossy arithmetic conversions without explicit casting.