stephenberry/glaze v1.7.0

1.7.0

on GitHub

Clang Reflection!

For the Clang compiler only, Glaze will reflect your structs. No need to write any glz::meta structures or use any macros. The reflection is hidden from the user and computed at compile time.

• You can still write a glz::meta to customize your serialization, which will override the default reflection.
• This approach only works for types that are constexpr constructible, but this includes std::string and std::vector in newer versions of Clang.
• The glz::meta approach is still the most optimized. There is some work to be done to make the automatic reflection just as fast.
• This approach currently uses Clang's __builtin_dump_struct, but we will be able to invisibly move to standard C++ reflection whenever it becomes available.

IMPORTANT:

When writing custom serializers specializing to_json or from_json, your concepts for custom types might not take precedence over the reflection engine (when you haven't written a glz::meta for your type). The reflection engine tries to discern that no specialization occurs for your type, but this is not always possible.

To solve this problem, you can add static constexpr auto reflect = false; to your class. Or, you can add a glz::meta for your type.