web3x/eth-lib/nat.js

Typescript port of web3.js

"use strict";
/*
  This file is part of web3x.

  web3x is free software: you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  web3x is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with web3x.  If not, see <http://www.gnu.org/licenses/>.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const bn_js_1 = tslib_1.__importDefault(require("bn.js"));
const bytes_1 = tslib_1.__importDefault(require("./bytes"));
const fromBN = bn => '0x' + bn.toString('hex');
const toBN = str => new bn_js_1.default(str.slice(2), 16);
const fromString = str => {
    const bn = '0x' + (str.slice(0, 2) === '0x' ? new bn_js_1.default(str.slice(2), 16) : new bn_js_1.default(str, 10)).toString('hex');
    return bn === '0x0' ? '0x' : bn;
};
const toEther = wei => toNumber(div(wei, fromString('10000000000'))) / 100000000;
const fromEther = eth => mul(fromNumber(Math.floor(eth * 100000000)), fromString('10000000000'));
const toString = a => toBN(a).toString(10);
const fromNumber = a => (typeof a === 'string' ? (/^0x/.test(a) ? a : '0x' + a) : '0x' + new bn_js_1.default(a).toString('hex'));
const toNumber = a => toBN(a).toNumber();
const toUint256 = a => bytes_1.default.pad(32, a);
const bin = method => (a, b) => fromBN(toBN(a)[method](toBN(b)));
const add = bin('add');
const mul = bin('mul');
const div = bin('div');
const sub = bin('sub');
exports.default = { toString, fromString, toNumber, fromNumber, toEther, fromEther, toUint256, add, mul, div, sub };
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