22 lines
1.4 KiB
Markdown
22 lines
1.4 KiB
Markdown
# Nyash Architecture (Phase 15)
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## Scope and Priorities
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- Primary execution path: LLVM AOT only. VM, Cranelift JIT/AOT, and the interpreter are not MIR14‑ready and are considered experimental in this phase.
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- Minimize fallback logic. Prefer simple, predictable lowering over clever heuristics that diverge across backends.
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## Value Model
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- Box = handle (i64) as the canonical runtime representation.
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- Strings: LLVM AOT favors i8* for fast path operations and bridging with NyRT. Conversions between i8* and handle exist but are kept to the minimum required surfaces.
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## Division of Responsibilities
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- NyRT (core, built‑in): fundamental boxes and operations essential for bootstrapping/self‑hosting.
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- IntegerBox, StringBox, ArrayBox, MapBox, BoolBox
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- Implemented as NyRT intrinsics (by‑id shims exist for plugin ABI compatibility).
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- Plugins: external or platform‑dependent functionality (File/Net/Regex/HTTP/DB/GUI etc.).
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- ExternCall: minimal window to the outside world (console print/log/error, debug trace, exit/now/readline); other APIs should route through BoxCall.
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## Backend Policy (Phase 15)
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- LLVM is the source of truth. All new rules and ABIs are documented for LLVM. Other backends will adopt them after LLVM stabilizes.
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- Fallback logic must be narrow and documented. If behavior depends on type annotations, the (missing) annotations should be fixed at the MIR stage rather than widening fallback.
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