48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
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// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import BigNumber from 'bignumber.js';
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import { toChecksumAddress } from './address';
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export function asU32 (slice) {
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// TODO: validation
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return new BigNumber(slice, 16);
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}
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export function asI32 (slice) {
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if (new BigNumber(slice.substr(0, 1), 16).toString(2)[0] === '1') {
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return new BigNumber(slice, 16)
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.minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16))
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.minus(1);
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}
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return new BigNumber(slice, 16);
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}
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export function asAddress (slice) {
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// TODO: address validation?
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return toChecksumAddress(`0x${slice.slice(-40)}`);
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}
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export function asBool (slice) {
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// TODO: everything else should be 0
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return new BigNumber(slice[63]).eq(1);
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}
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