5e3d9e7ae4
- restore: lang/src/compiler/** (parser/emit/builder/pipeline_v2) from e917d400 - docs: docs/development/selfhosting/index-operator-hako.md - smokes(hako): tools/smokes/v2/profiles/quick/core/index_operator_hako.sh (opt-in) - smokes(vm): adjust index_operator_vm.sh for semicolon gate + stable error text - rust/parser: allow IndexExpr and assignment LHS=Index; postfix parse LBRACK chain - rust/builder: lower arr/map index to BoxCall get/set; annotate array/map literals; Fail‑Fast for unsupported types - CURRENT_TASK: mark Rust side done; add Hako tasks checklist Note: files disappeared likely due to branch FF to a lineage without lang/src/compiler; no explicit delete commit found. Added anchor checks and suggested CI guard in follow-up.
32 lines
1.2 KiB
Markdown
32 lines
1.2 KiB
Markdown
Index Operator in Hakorune Compiler (selfhost)
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Scope
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- Bring Hako-side behavior up to parity with Rust parser/MIR builder for Phase‑20.31.
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User-facing spec (Phase‑1)
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- Read: expr[index] for Array/Map
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- Write: expr[index] = value for Array/Map
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- String indexing/ranges: out of scope in Phase‑1
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- Unsupported receiver: Fail‑Fast with a stable diagnostic
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Required changes (Hako compiler)
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- Parser
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- Add IndexExpr(target, index)
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- Permit Assign(IndexExpr, value) on LHS
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- Lowering (MIR emit)
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- Array: index read/write → BoxCall("get"/"set") on ArrayBox
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- Map: index read/write → BoxCall("get"/"set") on MapBox
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- Optional (AOT): dotted extern mapping remains as today (nyash.array.get_h, nyash.map.set_hh …)
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- Diagnostics
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- If receiver type cannot be resolved to ArrayBox/MapBox, emit: "index operator is only supported for Array/Map"
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Smokes (opt‑in, external HAKO_BIN)
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- tools/smokes/v2/profiles/quick/core/index_operator_hako.sh
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- Requires HAKO_BIN; skips with WARN when missing
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- Canaries: array read/write, map rw, negative string
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Rollout
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- No flags are required; follow Rust side semantics.
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- Keep Phase‑2 (String/range) for later work.
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