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 68 69 | 5x 5x 5x 5x 43370x 1390x 58x 22x 5x 4114x 4114x 4114x 4114x 4114x 15228x 15228x 15228x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 21685x 2x 2x 21685x 20989x 20989x 667x 667x 667x 18x 18x 18x 11x 11x 11x 21685x | import {CborEncoder} from './CborEncoder';
import {sort} from '@jsonjoy.com/util/lib/sort/insertion2';
import {MAJOR_OVERLAY} from './constants';
import {objKeyCmp} from '@jsonjoy.com/util/lib/objKeyCmp';
const strHeaderLength = (strSize: number): 1 | 2 | 3 | 5 => {
if (strSize <= 23) return 1;
else if (strSize <= 0xff) return 2;
else if (strSize <= 0xffff) return 3;
else return 5;
};
export class CborEncoderStable extends CborEncoder {
public writeObj(obj: Record<string, unknown>): void {
const keys = Object.keys(obj);
sort(keys, objKeyCmp);
const length = keys.length;
this.writeObjHdr(length);
for (let i = 0; i < length; i++) {
const key = keys[i];
this.writeStr(key);
this.writeAny(obj[key]);
}
}
/** @todo This implementation might be even faster than the default one, verify that. */
public writeStr(str: string): void {
const writer = this.writer;
const length = str.length;
const maxSize = length * 4;
writer.ensureCapacity(5 + maxSize);
const headerLengthGuess = strHeaderLength(length);
const x0 = writer.x;
const x1 = x0 + headerLengthGuess;
writer.x = x1;
const bytesWritten = writer.utf8(str);
const uint8 = writer.uint8;
const headerLength = strHeaderLength(bytesWritten);
if (headerLength !== headerLengthGuess) {
const shift = headerLength - headerLengthGuess;
uint8.copyWithin(x1 + shift, x1, x1 + bytesWritten);
}
switch (headerLength) {
case 1:
uint8[x0] = MAJOR_OVERLAY.STR + bytesWritten;
break;
case 2:
uint8[x0] = 0x78;
uint8[x0 + 1] = bytesWritten;
break;
case 3: {
uint8[x0] = 0x79;
writer.view.setUint16(x0 + 1, bytesWritten);
break;
}
case 5: {
uint8[x0] = 0x7a;
writer.view.setUint32(x0 + 1, bytesWritten);
break;
}
}
writer.x = x0 + headerLength + bytesWritten;
}
public writeUndef(): void {
this.writeNull();
}
}
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