Metzploreur/node_modules/@smithy/eventstream-codec/dist-cjs/Int64.js
clement callaert 244d45ceb8 Version 2
2023-11-01 17:33:25 +01:00

47 lines
1.4 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Int64 = void 0;
const util_hex_encoding_1 = require("@smithy/util-hex-encoding");
class Int64 {
constructor(bytes) {
this.bytes = bytes;
if (bytes.byteLength !== 8) {
throw new Error("Int64 buffers must be exactly 8 bytes");
}
}
static fromNumber(number) {
if (number > 9223372036854776000 || number < -9223372036854776000) {
throw new Error(`${number} is too large (or, if negative, too small) to represent as an Int64`);
}
const bytes = new Uint8Array(8);
for (let i = 7, remaining = Math.abs(Math.round(number)); i > -1 && remaining > 0; i--, remaining /= 256) {
bytes[i] = remaining;
}
if (number < 0) {
negate(bytes);
}
return new Int64(bytes);
}
valueOf() {
const bytes = this.bytes.slice(0);
const negative = bytes[0] & 0b10000000;
if (negative) {
negate(bytes);
}
return parseInt((0, util_hex_encoding_1.toHex)(bytes), 16) * (negative ? -1 : 1);
}
toString() {
return String(this.valueOf());
}
}
exports.Int64 = Int64;
function negate(bytes) {
for (let i = 0; i < 8; i++) {
bytes[i] ^= 0xff;
}
for (let i = 7; i > -1; i--) {
bytes[i]++;
if (bytes[i] !== 0)
break;
}
}