39 lines
1.9 KiB
Markdown
39 lines
1.9 KiB
Markdown
# Phase 15.3 — Imports/Namespace/nyash.toml Plan
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Status: 15.3 planning; focus remains on Stage‑1/2 compiler MVP. This document scopes when and how to bring `nyash.toml`/include/import/namespace into the selfhost path without destabilizing parity.
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Goals
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- Keep runner‑level `nyash.toml` parsing/resolution as the source of truth during 15.3.
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- Accept `using/import` syntax in the Ny compiler as a no‑op (record only) until resolution is delegated.
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- Avoid VM changes; resolution happens before codegen.
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Scope & Sequence (Phase 15.3)
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1) Stage‑1/2 compiler stability (primary)
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- Ny→JSON v0 → Bridge → PyVM/llvmlite parity maintained
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- PHI merge remains on Bridge (If/Loop)
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2) Imports/Namespace minimal acceptance (15.3‑late)
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- Parse `using ns` / `using "path" [as alias]` as statements in the Ny compiler
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- Do not resolve; emit no JSON entries (or emit metadata) — runner continues to strip/handle
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- Gate via `NYASH_ENABLE_USING=1`
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3) Runner remains in charge
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- Keep existing Rust runner’s `using` stripping + modules registry population
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- `nyash.toml` parsing stays in Rust (Phase 15)
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Out of scope (Phase 15)
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- Porting `nyash.toml` parsing to Ny
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- Cross‑module codegen/linking in Ny compiler
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- Advanced include resolution / package graph
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Acceptance (15.3)
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- Ny compiler can lex/parse `using` forms without breaking Stage‑1/2 programs
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- Runner path (Rust) continues to resolve `using` and `nyash.toml` as before (parity unchanged)
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Looking ahead (MIR18 / Phase 16)
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- Evaluate moving `nyash.toml` parsing to Ny as a library box (ConfigBox)
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- Unify include/import/namespace into a single resolver pass in Ny with a small JSON side channel back to the runner
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- Keep VM unchanged; all resolution before MIR build
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Switches
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- `NYASH_ENABLE_USING=1` — enable `using` acceptance in Ny compiler (no resolution)
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- `NYASH_SKIP_TOML_ENV=1` — skip applying [env] in nyash.toml (existing)
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