mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +08:00
Chris Tate
be1426a5cb
- Extend native FFI with additional scalar widths and writable byte spans. - Compile stored text codecs and supported bundled module patterns without a JavaScript engine. - Document supported limits.
51 lines
2.6 KiB
TypeScript
51 lines
2.6 KiB
TypeScript
declare function nativeF32(value: number): number;
|
|
declare function nativeI8(value: number): number;
|
|
declare function nativeU16(value: number): number;
|
|
declare function nativeI16(value: number): number;
|
|
declare function callbackF32(callback: (value: number) => number, value: number): number;
|
|
declare function callbackI8(callback: (value: number) => number, value: number): number;
|
|
declare function callbackU16(callback: (value: number) => number, value: number): number;
|
|
declare function callbackI16(callback: (value: number) => number, value: number): number;
|
|
declare function scalarMix(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number, j: number, k: number, l: number): number;
|
|
declare function nativeFill(value: Uint8Array, start: number): void;
|
|
declare function widthsStart(callback: (f: number, i8: number, u16: number, i16: number) => void): void;
|
|
declare function widthsStop(callback: (f: number, i8: number, u16: number, i16: number) => void): void;
|
|
|
|
const integers: number[] = [0, -0, 127, 128, 255, 256, -129, 32767, 32768, 65535, 65536, -32769, 4294967297, -4294967297, 1.9, -1.9, NaN, Infinity, -Infinity];
|
|
for (const value of integers) {
|
|
console.log(nativeI8(value), nativeU16(value), nativeI16(value));
|
|
}
|
|
const floats: number[] = [0, -0, 0.1, 16777217, -16777217, 1e-45, 1e40, -1e40, NaN, Infinity, -Infinity];
|
|
for (const value of floats) {
|
|
const output = nativeF32(value);
|
|
console.log(output, 1 / output);
|
|
}
|
|
console.log(callbackF32((value) => { console.log("f32", value); return value + 0.1; }, 16777217));
|
|
console.log(callbackI8((value) => { console.log("i8", value); return 257; }, 255));
|
|
console.log(callbackU16((value) => { console.log("u16", value); return -2; }, -1));
|
|
console.log(callbackI16((value) => { console.log("i16", value); return 65535; }, 32768));
|
|
console.log(scalarMix(128, -1, 32768, 0.5, 255, -32768, 65535, -0.25, 129, -2, 32769, 1.5));
|
|
try {
|
|
callbackF32(() => { throw new Error("float callback"); }, 1);
|
|
} catch (error) {
|
|
if (error instanceof Error) console.log("caught", error.message);
|
|
else throw error;
|
|
}
|
|
|
|
const backing = new Uint8Array([91, 1, 2, 3, 92]);
|
|
const view = backing.subarray(1, 4);
|
|
nativeFill(view, 255);
|
|
console.log(backing.join(","), view.join(","));
|
|
nativeFill(new Uint8Array(0), 1);
|
|
const buffer = Buffer.from([93, 4, 5, 94]);
|
|
nativeFill(buffer.subarray(1, 3), 42);
|
|
console.log(buffer.join(","));
|
|
|
|
let started = false;
|
|
const foreign = (f: number, i8: number, u16: number, i16: number): void => {
|
|
console.log("foreign", started, f, i8, u16, i16);
|
|
widthsStop(foreign);
|
|
};
|
|
widthsStart(foreign);
|
|
started = true;
|