fix: TypeStr support for Any type in reflection Init

[guan404ming]

Why

• Using refl::init() to define a constructor that takes Any fails to compile
• The reflection system converts Any to Any&& internally
• No Type2Str<Any&&> specialization existed to handle this case

How

• Added Type2Str<Any&&> specialization in any.h
• Added forward declaration of Any in type_traits.h

[gemini-code-assist]

Summary of Changes

Hello @guan404ming, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a compilation failure in the reflection system when attempting to define constructors that accept Any types. The issue stemmed from the internal conversion of Any to Any&& without a corresponding Type2Str specialization. By adding this specialization and a necessary forward declaration, the PR ensures that refl::init<Any>() functions as expected, allowing for robust reflection of Any parameters.

Highlights

• Reflection System Fix: Resolved a compilation error when using refl::init<Any>() by adding a Type2Str specialization for Any&&, which was previously missing.
• Type Trait Enhancement: Introduced a Type2Str<Any&&> specialization in any.h to correctly handle rvalue references of Any objects within the reflection system.
• Dependency Resolution: Added a forward declaration for class Any in type_traits.h to ensure proper compilation order and resolve potential circular dependencies.
• Test Coverage: Included new unit tests in test_reflection.cc to validate that refl::init<Any>() now correctly initializes objects with Any type parameters using various underlying data types.

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[gemini-code-assist]

Code Review

This pull request correctly addresses a compilation failure when using refl::init<Any>() by adding the missing Type2Str<Any&&> specialization. The changes are minimal and well-targeted. A new test case has been added to verify the fix, which is great. I've added a few suggestions to improve the robustness of the new test by using ASSERT_TRUE for null checks to prevent potential crashes during test execution.

[junrushao]

could you also try

Suggested change

	explicit TestObjWithAny(Any value) : value(std::move(value)) {}
	explicit TestObjWithAny(AnyView value) : value(value) {}

and see if it compiles?

[guan404ming]

The code fails to compile with the same missing TypeStr error when using refl::init<AnyView>() so I also add Type2Str<AnyView&&> specialization and related tests.

[junrushao]

LGTM! Thanks for the fix!

[guan404ming]

Thanks!