Struct TVMFFITypeAttrColumn

Struct TVMFFITypeAttrColumn#

Struct Documentation#

struct TVMFFITypeAttrColumn#

One column of a type–attribute table: extra attributes keyed by runtime type index.

TypeAttr is designed to support an open set of possible attributes that can be registered and queried across different downstream use cases.

Conceptually, TypeAttr is a dynamic variant of TypeTraits as seen in C++/Rust. It behaves like c++ type_traits, so column[T] does not contain attributes from base classes.

Typical use cases for TypeAttr include:

  • Storing extra magic trait functions that can customize behaviors like hash/eq/repr.

  • Storing extra metadata about type data structures (e.g., mutability) and properties of op/operator structures that can be used by compiler transformations (e.g., passes).

This column covers type indices in the range [begin_index, begin_index + size). For a given type_index, the corresponding entry is data[type_index - begin_index] when begin_index <= type_index < begin_index + size; otherwise the entry is not present (treat as None/null).

See also

TVMFFIRegisterTypeAttr

Public Members

const TVMFFIAny *data#

The data of the column, indexed by (type_index - begin_index).

int32_t size#

The number of elements in the data array.

The column covers type indices in the range [begin_index, begin_index + size). For a given type_index, the corresponding entry is data[type_index - begin_index] when begin_index <= type_index < begin_index + size.

int32_t begin_index#

The starting type index of the column data. A value of 0 means the data array starts at type_index 0.

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