mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-28 06:53:42 +08:00
Chris Tate
383f43bdeb
The global-effects summary typed each library-call argument as a
structural `{ kind: string }`. The native compiler extracted that one
record arm from the IrType union and threw on bytes, array and other
arms with more fields, so `scriptc build --lib` failed with SC3004 for
integer-slot profiles that call, for example, `Buffer.alloc` or
`String.fromCharCode`. The helper now takes `IrType`, and the bootstrap
test compares native and Node sidecars for such a profile.
28 lines
878 B
TypeScript
28 lines
878 B
TypeScript
// Integer-slot attestation over a program whose library calls take
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// non-scalar arguments: Buffer.alloc lowers to buffer.brand over a bytes
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// value, and String.fromCharCode to a call over an array. The slot check
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// summarizes which globals every call may write, reading each argument's
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// IR type; the native compiler must produce the same sidecar as Node.
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export const scratch = Buffer.alloc(8);
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export const letter = String.fromCharCode(65);
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export interface Model {
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readonly phase: number;
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}
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export type Msg = { readonly kind: "next" } | { readonly kind: "reset" };
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export function init(): Model {
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return { phase: 0 };
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}
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export function update(model: Model, msg: Msg): Model {
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switch (msg.kind) {
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case "next":
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return { phase: model.phase >= 0 && model.phase < 3 ? Math.trunc(model.phase + 1) : 0 };
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case "reset":
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return { phase: 0 };
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}
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}
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