~/talk

C++14 Reflections Without Macros, Markup nor External Tooling..

Talkat CppCon 2016 · 2016-09-18..09-23· [compilers-and-language-design, c-and-cpp]

speaker

name:Antony Polukhin

links:none on file

resources

video:https://youtu.be/abdeAew3gmQ

slides:none on file

summary

A compile-time reflection technique for C++14 uses aggregate initialization probing plus variadic templates, constexpr, SFINAE, decltype and an implicit conversion operator to count fields and implicit conversion to capture field types, producing a std::tuple-like type map at compile time. It handles nested PODs (by flattening), const/volatile and multi-level pointers (encoding pointer bits into type IDs), and enums (by using their underlying type), and ships as apolukhin/magic_get (now pfr) on GitHub. It works and compiles fast (binary-search field detection); limitations include flattening, some loss of enum identity, and a reinterpret_cast workaround in C++14 that C++17 structured bindings can remove.

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