ripple-binary-codec
Version:
XRP Ledger binary codec
50 lines • 1.56 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.UInt32 = void 0;
const uint_1 = require("./uint");
const utils_1 = require("../utils");
/**
* Derived UInt class for serializing/deserializing 32 bit UInt
*/
class UInt32 extends uint_1.UInt {
constructor(bytes) {
super(bytes !== null && bytes !== void 0 ? bytes : UInt32.defaultUInt32.bytes);
}
static fromParser(parser) {
return new UInt32(parser.read(UInt32.width));
}
/**
* Construct a UInt32 object from a number
*
* @param val UInt32 object or number
*/
static from(val) {
if (val instanceof UInt32) {
return val;
}
const buf = new Uint8Array(UInt32.width);
if (typeof val === 'string') {
const num = Number.parseInt(val);
(0, utils_1.writeUInt32BE)(buf, num, 0);
return new UInt32(buf);
}
if (typeof val === 'number') {
UInt32.checkUintRange(val, 0, 0xffffffff);
(0, utils_1.writeUInt32BE)(buf, val, 0);
return new UInt32(buf);
}
throw new Error('Cannot construct UInt32 from given value');
}
/**
* get the value of a UInt32 object
*
* @returns the number represented by this.bytes
*/
valueOf() {
return parseInt((0, utils_1.readUInt32BE)(this.bytes, 0), 10);
}
}
exports.UInt32 = UInt32;
UInt32.width = 32 / 8; // 4
UInt32.defaultUInt32 = new UInt32(new Uint8Array(UInt32.width));
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