Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 19x 25x 25x 19x 15x 15x 19x 49x 63x 63x 63x 63x 48x 15x 14x 19x 50x 50x 44x 44x 6x 50x 48x 2x 46x 19x 7x | import { Context, Des, Ser } from "./types";
export function createContext(size = 4096): Context {
const buffer = new ArrayBuffer(size);
return {
i: 0,
view: new DataView(buffer),
bytes: new Uint8Array(buffer)
};
}
export function growContext(ctx: Context) {
ctx.bytes = new Uint8Array(ctx.bytes.length * 2);
ctx.view = new DataView(ctx.bytes.buffer);
}
export function contextSer<T>(
ctx: Context,
ser: Ser<T>,
data: T
): Uint8Array {
// eslint-disable-next-line no-constant-condition
while (true) {
const limit = ctx.bytes.length - 8;
ctx.i = 0;
try {
ser(ctx, data);
if (ctx.i < limit) return ctx.bytes;
} catch (error) {
if (ctx.i < limit && !(error instanceof RangeError)) throw error;
}
growContext(ctx);
}
}
export function contextDes<T>(
ctx: Context,
des: Des<T>,
bytes: Uint8Array
): T {
const { length } = bytes;
if (length < 4096) {
ctx.bytes.set(bytes);
ctx.i = 0;
} else {
ctx = contextFromBytes(bytes);
}
const data = des(ctx);
if (ctx.i !== length)
throw RangeError(
`Expected to process ${length} bytes, processed ${ctx.i} bytes instead`
);
return data;
}
export function contextFromBytes(array: Uint8Array): Context {
return {
i: 0,
bytes: array,
view: new DataView(
array.buffer,
array.byteOffset,
array.byteLength
)
};
}
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