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Allow upcasting#944

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Commits on Apr 16, 2025

• Enable polymorphic shared_ptr downcasting in Any using type traits

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• Enable blackboard matching for types sharing a common base class

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• Add test fixture for Greeter type hierarchy and type trait registration

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• Add unit test for Any/Blackboard type casting

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• Avoid std::is_polymorphic instantiation on incomplete types

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• Refactor castPtr() to unify shared_ptr casting logic

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Commits on Apr 17, 2025

• Support recursive root base resolution for polymorphic shared_ptr types

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• Adjust any_cast_base<FancyHelloGreeter> to map to HelloGreeter

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Commits on Apr 18, 2025

• Add compile-time base class chain introspection using any_cast_base

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• Extend TypeInfo to store and expose base class chain

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• Add unit test for upcasting base type chain in PortInfo

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• Use original typeid for shared_ptr types in TypeInfo::Create()

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• Add PortInfo constructors that accept TypeInfo for cleaner initialization

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• Allow port type mismatch if convertible via base class chain

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• Improve test coverage for polymorphic port casting

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• Make test platform-independent by relaxing exact exception message check

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Commits on Apr 19, 2025

• Refactor upcasting tests to use clearer Animal hierarchy example

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• Restrict polymorphic upcast to INPUT ports only during type resolution

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• Revert to direct type_index comparison in Blackboard::set()

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• Add caching mechanism for derived castPtr() in Any

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