33 lines
1.8 KiB
Markdown
33 lines
1.8 KiB
Markdown
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# Using → Loader Integration (Minimal)
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Goal
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- Keep `using` simple: strip lines and resolve names to paths/aliases.
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- Add the minimal integration so userland boxes referenced via `using` are actually available at compile/run time.
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Scope (pause‑safe)
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- Parser stays Phase‑0: keep `nyashstd` restriction; do not widen grammar.
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- Integration is a runner step (pre‑parse): resolve and register modules; do not change language semantics.
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Design
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- Strip `using` lines when `NYASH_ENABLE_USING=1` (already implemented).
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- For each `using ns [as alias]?`:
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- Resolve `ns` → path via: [modules] → aliases → using.paths (apps/lib/.) → context dir.
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- Register mapping in `modules_registry` as `alias_or_ns -> path` (already implemented).
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- Minimal loader hook (defer heavy linking):
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- Compile/execute entry file as today.
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- Userland boxes are accessed via tools/runners that read from `modules_registry` where needed (e.g., PyVM harness/tests).
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Notes
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- Entry thin‑ization (Mini‑VM) waits until loader reads userland boxes on demand.
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- Keep docs small: this note serves as the canonical link; avoid duplicating details in other pages.
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Preprocessing invariants (runner)
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- `using` lines are stripped and resolved prior to parse; dependencies are inlined before `Main` so names are available without changing language semantics.
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- Line‑head `@name[:T] = expr` is normalized to `local name[:T] = expr` as a purely textual pre‑expand (no semantic change). Inline `@` is not recognized; keep `@` at line head.
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- These steps are pause‑safe: they do not alter AST semantics; they only simplify authoring and module wiring.
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Links
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- Runner pipeline: src/runner/pipeline.rs
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- Using strip/resolve: src/runner/modes/common_util/resolve.rs
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- Env: NYASH_ENABLE_USING, NYASH_USING_STRICT, NYASH_SKIP_TOML_ENV
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