ripple-binary-codec
Version:
XRP Ledger binary codec
45 lines • 1.38 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.UInt16 = void 0;
const uint_1 = require("./uint");
const utils_1 = require("../utils");
/**
* Derived UInt class for serializing/deserializing 16 bit UInt
*/
class UInt16 extends uint_1.UInt {
constructor(bytes) {
super(bytes !== null && bytes !== void 0 ? bytes : UInt16.defaultUInt16.bytes);
}
static fromParser(parser) {
return new UInt16(parser.read(UInt16.width));
}
/**
* Construct a UInt16 object from a number
*
* @param val UInt16 object or number
*/
static from(val) {
if (val instanceof UInt16) {
return val;
}
if (typeof val === 'number') {
UInt16.checkUintRange(val, 0, 0xffff);
const buf = new Uint8Array(UInt16.width);
(0, utils_1.writeUInt16BE)(buf, val, 0);
return new UInt16(buf);
}
throw new Error('Can not construct UInt16 with given value');
}
/**
* get the value of a UInt16 object
*
* @returns the number represented by this.bytes
*/
valueOf() {
return parseInt((0, utils_1.readUInt16BE)(this.bytes, 0));
}
}
exports.UInt16 = UInt16;
UInt16.width = 16 / 8; // 2
UInt16.defaultUInt16 = new UInt16(new Uint8Array(UInt16.width));
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