Type Layout functions added to compiler to better support C-FFI.#229
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Type Layout functions added to compiler to better support C-FFI.#229redvers wants to merge 3 commits into
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jemc
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jemc
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jemc
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jemc
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adrianboyko
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May 9, 2026
- Rename TypeInfo primitive to ABIMemoryLayout to avoid builtin name collisions (jemc/adrianboyko consensus). - Replace offset_of[T](field: String) with offsets_of[T]() returning Array[(String, USize)] val (adrianboyko's proposal). Removes the literal-string special case from the compiler and unifies the four intrinsics under one validation shape; the single-field-lookup ergonomic is recovered with a small user-side helper. - Drop nested-path unresolved question and embed-specific testing language; no special handling of embedded fields, per sync call. - Reword the misleading "round-tripping" stride_of example. - Replace the generic-serializer example, which called a nonexistent field_value(name) method, with an honest layout-inspection example. - Document the rejected offset_of(field: String) design as an alternative.
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@redvers please ask a robot to reformat this to have no breaking lines except for paragraphs etc. or suffer and do it yourself. i think you should "ask a robot". |
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Proposes a TypeInfo primitive with four compile-time intrinsics — size_of, stride_of, align_of, offset_of — exposing layout information LLVM already computes. Covers concrete nominal types (primitives, structs, classes, actors) and tuples; unions and other abstract types are compile-time errors.