@metamask/ethjs-query
Version:
A simple query layer for the Ethereum RPC.
1,784 lines (1,560 loc) • 195 kB
JavaScript
/* eslint-disable */
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define("Eth", [], factory);
else if(typeof exports === 'object')
exports["Eth"] = factory();
else
root["Eth"] = factory();
})(typeof self !== 'undefined' ? self : this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, {
/******/ configurable: false,
/******/ enumerable: true,
/******/ get: getter
/******/ });
/******/ }
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 4);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
var isHexPrefixed = __webpack_require__(2);
/**
* Removes '0x' from a given `String` is present
* @param {String} str the string value
* @return {String|Optional} a string by pass if necessary
*/
module.exports = function stripHexPrefix(str) {
if (typeof str !== 'string') {
return str;
}
return isHexPrefixed(str) ? str.slice(2) : str;
};
/***/ }),
/* 1 */
/***/ (function(module, exports) {
var g;
// This works in non-strict mode
g = (function() {
return this;
})();
try {
// This works if eval is allowed (see CSP)
g = g || Function("return this")() || (1,eval)("this");
} catch(e) {
// This works if the window reference is available
if(typeof window === "object")
g = window;
}
// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/* 2 */
/***/ (function(module, exports) {
/**
* Returns a `Boolean` on whether or not the a `String` starts with '0x'
* @param {String} str the string input value
* @return {Boolean} a boolean if it is or is not hex prefixed
* @throws if the str input is not a string
*/
module.exports = function isHexPrefixed(str) {
if (typeof str !== 'string') {
throw new Error("[is-hex-prefixed] value must be type 'string', is currently type " + typeof str + ", while checking isHexPrefixed.");
}
return str.slice(0, 2) === '0x';
};
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var isFn = __webpack_require__(17);
var setImmediate = __webpack_require__(18);
module.exports = function (promise) {
if (!isFn(promise.then)) {
throw new TypeError('Expected a promise');
}
return function (cb) {
promise.then(function (data) {
setImmediate(cb, null, data);
}, function (err) {
setImmediate(cb, err);
});
};
};
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var format = __webpack_require__(5);
var EthRPC = __webpack_require__(16);
var promiseToCallback = __webpack_require__(3);
module.exports = Eth;
function Eth(provider, options) {
var self = this;
var optionsObject = options || {};
if (!(this instanceof Eth)) {
throw new Error('[ethjs-query] the Eth object requires the "new" flag in order to function normally (i.e. `const eth = new Eth(provider);`).');
}
if (typeof provider !== 'object') {
throw new Error("[ethjs-query] the Eth object requires that the first input 'provider' must be an object, got '" + typeof provider + "' (i.e. 'const eth = new Eth(provider);')");
}
self.options = Object.assign({
debug: optionsObject.debug || false,
logger: optionsObject.logger || console,
jsonSpace: optionsObject.jsonSpace || 0
});
self.rpc = new EthRPC(provider);
self.setProvider = self.rpc.setProvider;
}
Eth.prototype.log = function log(message) {
var self = this;
if (self.options.debug) self.options.logger.log("[ethjs-query log] " + message);
};
Object.keys(format.schema.methods).forEach(function (rpcMethodName) {
Object.defineProperty(Eth.prototype, rpcMethodName.replace('eth_', ''), {
enumerable: true,
value: generateFnFor(rpcMethodName, format.schema.methods[rpcMethodName])
});
});
function generateFnFor(rpcMethodName, methodObject) {
return function outputMethod() {
var callback = null; // eslint-disable-line
var inputs = null; // eslint-disable-line
var inputError = null; // eslint-disable-line
var self = this;
var args = [].slice.call(arguments); // eslint-disable-line
var protoMethodName = rpcMethodName.replace('eth_', ''); // eslint-disable-line
if (args.length > 0 && typeof args[args.length - 1] === 'function') {
callback = args.pop();
}
var promise = performCall.call(this);
// if callback provided, convert promise to callback
if (callback) {
return promiseToCallback(promise)(callback);
}
// only return promise if no callback provided
return promise;
function performCall() {
var _this = this;
return new Promise(function (resolve, reject) {
// validate arg length
if (args.length < methodObject[2]) {
reject(new Error("[ethjs-query] method '" + protoMethodName + "' requires at least " + methodObject[2] + " input (format type " + methodObject[0][0] + "), " + args.length + " provided. For more information visit: https://github.com/ethereum/wiki/wiki/JSON-RPC#" + rpcMethodName.toLowerCase()));
return;
}
if (args.length > methodObject[0].length) {
reject(new Error("[ethjs-query] method '" + protoMethodName + "' requires at most " + methodObject[0].length + " params, " + args.length + " provided '" + JSON.stringify(args, null, self.options.jsonSpace) + "'. For more information visit: https://github.com/ethereum/wiki/wiki/JSON-RPC#" + rpcMethodName.toLowerCase()));
return;
}
// set default block
if (methodObject[3] && args.length < methodObject[3]) {
args.push('latest');
}
// format inputs
_this.log("attempting method formatting for '" + protoMethodName + "' with inputs " + JSON.stringify(args, null, _this.options.jsonSpace));
try {
inputs = format.formatInputs(rpcMethodName, args);
_this.log("method formatting success for '" + protoMethodName + "' with formatted result: " + JSON.stringify(inputs, null, _this.options.jsonSpace));
} catch (formattingError) {
reject(new Error("[ethjs-query] while formatting inputs '" + JSON.stringify(args, null, _this.options.jsonSpace) + "' for method '" + protoMethodName + "' error: " + formattingError));
return;
}
// perform rpc call
_this.rpc.sendAsync({
method: rpcMethodName,
params: inputs
}).then(function (result) {
// format result
_this.log("attempting method formatting for '" + protoMethodName + "' with raw outputs: " + JSON.stringify(result, null, _this.options.jsonSpace));
var methodOutputs = format.formatOutputs(rpcMethodName, result);
_this.log("method formatting success for '" + protoMethodName + "' formatted result: " + JSON.stringify(methodOutputs, null, _this.options.jsonSpace));
resolve(methodOutputs);
})["catch"](function (error) {
reject(error);
});
});
}
};
}
/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var numberToBN = __webpack_require__(6);
var schema = __webpack_require__(10);
var _require = __webpack_require__(11),
arrayContainsArray = _require.arrayContainsArray,
getBinarySize = _require.getBinarySize,
padToEven = _require.padToEven;
var stripHexPrefix = __webpack_require__(0);
/**
* Format quantity values, either encode to hex or decode to BigNumber
* should intake null, stringNumber, number, BN
*
* @method formatQuantity
* @param {String|BigNumber|Number} value quantity or tag to convert
* @param {Boolean} encode to hex or decode to BigNumber
* @returns {Optional} output to BigNumber or string
* @throws error if value is a float
*/
function formatQuantity(value, encode, pad) {
if (['string', 'number', 'object'].indexOf(typeof value) === -1 || value === null) {
return value;
}
var numberValue = numberToBN(value);
var numPadding = pad && numberValue.toString(16).length % 2 ? '0' : '';
if (numberToBN(value).isNeg()) {
throw new Error("[ethjs-format] while formatting quantity '" + numberValue.toString(10) + "', invalid negative number. Number must be positive or zero.");
}
return encode ? "0x" + numPadding + numberValue.toString(16) : numberValue;
}
/**
* Format quantity or tag, if tag bypass return, else format quantity
* should intake null, stringNumber, number, BN, string tag
*
* @method formatQuantityOrTag
* @param {String|BigNumber|Number} value quantity or tag to convert
* @param {Boolean} encode encode the number to hex or decode to BigNumber
* @returns {Object|String} output to BigNumber or string
* @throws error if value is a float
*/
function formatQuantityOrTag(value, encode) {
var output = value; // eslint-disable-line
// if the value is a tag, bypass
if (schema.tags.indexOf(value) === -1) {
output = formatQuantity(value, encode);
}
return output;
}
/**
* FormatData under strict conditions hex prefix
*
* @method formatData
* @param {String} value the bytes data to be formatted
* @param {Number} byteLength the required byte length (usually 20 or 32)
* @returns {String} output output formatted data
* @throws error if minimum length isnt met
*/
function formatData(value, byteLength) {
var output = value; // eslint-disable-line
var outputByteLength = 0; // eslint-disable-line
// prefix only under strict conditions, else bypass
if (typeof value === 'string') {
output = "0x" + padToEven(stripHexPrefix(value));
outputByteLength = getBinarySize(output);
}
// format double padded zeros.
if (output === '0x00') {
output = '0x0';
}
// throw if bytelength is not correct
if (typeof byteLength === 'number' && value !== null && output !== '0x' && output !== '0x0' // support empty values
&& (!/^[0-9A-Fa-f]+$/.test(stripHexPrefix(output)) || outputByteLength !== 2 + byteLength * 2)) {
throw new Error("[ethjs-format] hex string '" + output + "' must be an alphanumeric " + (2 + byteLength * 2) + " utf8 byte hex (chars: a-fA-F) string, is " + outputByteLength + " bytes");
}
return output;
}
/**
* Format object, even with random RPC caviets
*
* @method formatObject
* @param {String|Array} formatter the unit to convert to, default ether
* @param {Object} value the object value
* @param {Boolean} encode encode to hex or decode to BigNumber
* @returns {Object} output object
* @throws error if value is a float
*/
function formatObject(formatter, value, encode) {
var output = Object.assign({}, value); // eslint-disable-line
var formatObject = null; // eslint-disable-line
// if the object is a string flag, then retreive the object
if (typeof formatter === 'string') {
if (formatter === 'Boolean|EthSyncing') {
formatObject = Object.assign({}, schema.objects.EthSyncing);
} else if (formatter === 'DATA|Transaction') {
formatObject = Object.assign({}, schema.objects.Transaction);
} else {
formatObject = Object.assign({}, schema.objects[formatter]);
}
}
// check if all required data keys are fulfilled
if (!arrayContainsArray(Object.keys(value), formatObject.__required)) {
// eslint-disable-line
throw new Error("[ethjs-format] object " + JSON.stringify(value) + " must contain properties: " + formatObject.__required.join(', ')); // eslint-disable-line
}
// assume formatObject is an object, go through keys and format each
Object.keys(formatObject).forEach(function (valueKey) {
if (valueKey !== '__required' && typeof value[valueKey] !== 'undefined') {
output[valueKey] = format(formatObject[valueKey], value[valueKey], encode);
}
});
return output;
}
/**
* Format array
*
* @method formatArray
* @param {String|Array} formatter the unit to convert to, default ether
* @param {Object} value the value in question
* @param {Boolean} encode encode to hex or decode to BigNumber
* @param {Number} lengthRequirement the required minimum array length
* @returns {Object} output object
* @throws error if minimum length isnt met
*/
function formatArray(formatter, value, encode, lengthRequirement) {
var output = value.slice(); // eslint-disable-line
var formatObject = formatter; // eslint-disable-line
// if the formatter is an array or data, then make format object an array data
if (formatter === 'Array|DATA') {
formatObject = ['D'];
}
// if formatter is a FilterChange and acts like a BlockFilter
// or PendingTx change format object to tx hash array
if (formatter === 'FilterChange' && typeof value[0] === 'string') {
formatObject = ['D32'];
}
// enforce minimum value length requirements
if (encode === true && typeof lengthRequirement === 'number' && value.length < lengthRequirement) {
throw new Error("array " + JSON.stringify(value) + " must contain at least " + lengthRequirement + " params, but only contains " + value.length + "."); // eslint-disable-line
}
// make new array, avoid mutation
formatObject = formatObject.slice();
// assume formatObject is an object, go through keys and format each
value.forEach(function (valueKey, valueIndex) {
// use key zero as formatter for all values, unless otherwise specified
var formatObjectKey = 0; // eslint-disable-line
// if format array is exact, check each argument against formatter argument
if (formatObject.length > 1) {
formatObjectKey = valueIndex;
}
output[valueIndex] = format(formatObject[formatObjectKey], valueKey, encode);
});
return output;
}
/**
* Format various kinds of data to RPC spec or into digestable JS objects
*
* @method format
* @param {String|Array} formatter the data formatter
* @param {String|Array|Object|Null|Number} value the data value input
* @param {Boolean} encode encode to hex or decode to BigNumbers, Strings, Booleans, Null
* @param {Number} lengthRequirement the minimum data length requirement
* @throws error if minimum length isnt met
*/
function format(formatter, value, encode, lengthRequirement) {
var output = value; // eslint-disable-line
// if formatter is quantity or quantity or tag
if (formatter === 'Q') {
output = formatQuantity(value, encode);
} else if (formatter === 'QP') {
output = formatQuantity(value, encode, true);
} else if (formatter === 'Q|T') {
output = formatQuantityOrTag(value, encode);
} else if (formatter === 'D') {
output = formatData(value); // dont format data flagged objects like compiler output
} else if (formatter === 'D20') {
output = formatData(value, 20); // dont format data flagged objects like compiler output
} else if (formatter === 'D32') {
output = formatData(value, 32); // dont format data flagged objects like compiler output
} else if (typeof value === 'object'
// if value is an object or array
&& value !== null && Array.isArray(value) === false) {
output = formatObject(formatter, value, encode);
} else if (Array.isArray(value)) {
output = formatArray(formatter, value, encode, lengthRequirement);
}
return output;
}
/**
* Format RPC inputs generally to the node or TestRPC
*
* @method formatInputs
* @param {Object} method the data formatter
* @param {Array} inputs the data inputs
* @returns {Array} output the formatted inputs array
* @throws error if minimum length isnt met
*/
function formatInputs(method, inputs) {
return format(schema.methods[method][0], inputs, true, schema.methods[method][2]);
}
/**
* Format RPC outputs generally from the node or TestRPC
*
* @method formatOutputs
* @param {Object} method the data formatter
* @param {Array|String|Null|Boolean|Object} outputs the data inputs
* @returns {Array|String|Null|Boolean|Object} output the formatted data
*/
function formatOutputs(method, outputs) {
return format(schema.methods[method][1], outputs, false);
}
// export formatters
module.exports = {
schema: schema,
formatQuantity: formatQuantity,
formatQuantityOrTag: formatQuantityOrTag,
formatObject: formatObject,
formatArray: formatArray,
format: format,
formatInputs: formatInputs,
formatOutputs: formatOutputs
};
/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {
var BN = __webpack_require__(7);
var stripHexPrefix = __webpack_require__(0);
/**
* Returns a BN object, converts a number value to a BN
* @param {String|Number|Object} `arg` input a string number, hex string number, number, BigNumber or BN object
* @return {Object} `output` BN object of the number
* @throws if the argument is not an array, object that isn't a bignumber, not a string number or number
*/
module.exports = function numberToBN(arg) {
if (typeof arg === 'string' || typeof arg === 'number') {
var multiplier = new BN(1); // eslint-disable-line
var formattedString = String(arg).toLowerCase().trim();
var isHexPrefixed = formattedString.substr(0, 2) === '0x' || formattedString.substr(0, 3) === '-0x';
var stringArg = stripHexPrefix(formattedString); // eslint-disable-line
if (stringArg.substr(0, 1) === '-') {
stringArg = stripHexPrefix(stringArg.slice(1));
multiplier = new BN(-1, 10);
}
stringArg = stringArg === '' ? '0' : stringArg;
if (!stringArg.match(/^-?[0-9]+$/) && stringArg.match(/^[0-9A-Fa-f]+$/) || stringArg.match(/^[a-fA-F]+$/) || isHexPrefixed === true && stringArg.match(/^[0-9A-Fa-f]+$/)) {
return new BN(stringArg, 16).mul(multiplier);
}
if ((stringArg.match(/^-?[0-9]+$/) || stringArg === '') && isHexPrefixed === false) {
return new BN(stringArg, 10).mul(multiplier);
}
} else if (typeof arg === 'object' && arg.toString && !arg.pop && !arg.push) {
if (arg.toString(10).match(/^-?[0-9]+$/) && (arg.mul || arg.dividedToIntegerBy)) {
return new BN(arg.toString(10), 10);
}
}
throw new Error('[number-to-bn] while converting number ' + JSON.stringify(arg) + ' to BN.js instance, error: invalid number value. Value must be an integer, hex string, BN or BigNumber instance. Note, decimals are not supported.');
};
/***/ }),
/* 7 */
/***/ (function(module, exports, __webpack_require__) {
/* WEBPACK VAR INJECTION */(function(module) {(function (module, exports) {
'use strict';
// Utils
function assert (val, msg) {
if (!val) throw new Error(msg || 'Assertion failed');
}
// Could use `inherits` module, but don't want to move from single file
// architecture yet.
function inherits (ctor, superCtor) {
ctor.super_ = superCtor;
var TempCtor = function () {};
TempCtor.prototype = superCtor.prototype;
ctor.prototype = new TempCtor();
ctor.prototype.constructor = ctor;
}
// BN
function BN (number, base, endian) {
if (BN.isBN(number)) {
return number;
}
this.negative = 0;
this.words = null;
this.length = 0;
// Reduction context
this.red = null;
if (number !== null) {
if (base === 'le' || base === 'be') {
endian = base;
base = 10;
}
this._init(number || 0, base || 10, endian || 'be');
}
}
if (typeof module === 'object') {
module.exports = BN;
} else {
exports.BN = BN;
}
BN.BN = BN;
BN.wordSize = 26;
var Buffer;
try {
if (typeof window !== 'undefined' && typeof window.Buffer !== 'undefined') {
Buffer = window.Buffer;
} else {
Buffer = __webpack_require__(9).Buffer;
}
} catch (e) {
}
BN.isBN = function isBN (num) {
if (num instanceof BN) {
return true;
}
return num !== null && typeof num === 'object' &&
num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
};
BN.max = function max (left, right) {
if (left.cmp(right) > 0) return left;
return right;
};
BN.min = function min (left, right) {
if (left.cmp(right) < 0) return left;
return right;
};
BN.prototype._init = function init (number, base, endian) {
if (typeof number === 'number') {
return this._initNumber(number, base, endian);
}
if (typeof number === 'object') {
return this._initArray(number, base, endian);
}
if (base === 'hex') {
base = 16;
}
assert(base === (base | 0) && base >= 2 && base <= 36);
number = number.toString().replace(/\s+/g, '');
var start = 0;
if (number[0] === '-') {
start++;
this.negative = 1;
}
if (start < number.length) {
if (base === 16) {
this._parseHex(number, start, endian);
} else {
this._parseBase(number, base, start);
if (endian === 'le') {
this._initArray(this.toArray(), base, endian);
}
}
}
};
BN.prototype._initNumber = function _initNumber (number, base, endian) {
if (number < 0) {
this.negative = 1;
number = -number;
}
if (number < 0x4000000) {
this.words = [number & 0x3ffffff];
this.length = 1;
} else if (number < 0x10000000000000) {
this.words = [
number & 0x3ffffff,
(number / 0x4000000) & 0x3ffffff
];
this.length = 2;
} else {
assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
this.words = [
number & 0x3ffffff,
(number / 0x4000000) & 0x3ffffff,
1
];
this.length = 3;
}
if (endian !== 'le') return;
// Reverse the bytes
this._initArray(this.toArray(), base, endian);
};
BN.prototype._initArray = function _initArray (number, base, endian) {
// Perhaps a Uint8Array
assert(typeof number.length === 'number');
if (number.length <= 0) {
this.words = [0];
this.length = 1;
return this;
}
this.length = Math.ceil(number.length / 3);
this.words = new Array(this.length);
for (var i = 0; i < this.length; i++) {
this.words[i] = 0;
}
var j, w;
var off = 0;
if (endian === 'be') {
for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
this.words[j] |= (w << off) & 0x3ffffff;
this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
off += 24;
if (off >= 26) {
off -= 26;
j++;
}
}
} else if (endian === 'le') {
for (i = 0, j = 0; i < number.length; i += 3) {
w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
this.words[j] |= (w << off) & 0x3ffffff;
this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
off += 24;
if (off >= 26) {
off -= 26;
j++;
}
}
}
return this._strip();
};
function parseHex4Bits (string, index) {
var c = string.charCodeAt(index);
// '0' - '9'
if (c >= 48 && c <= 57) {
return c - 48;
// 'A' - 'F'
} else if (c >= 65 && c <= 70) {
return c - 55;
// 'a' - 'f'
} else if (c >= 97 && c <= 102) {
return c - 87;
} else {
assert(false, 'Invalid character in ' + string);
}
}
function parseHexByte (string, lowerBound, index) {
var r = parseHex4Bits(string, index);
if (index - 1 >= lowerBound) {
r |= parseHex4Bits(string, index - 1) << 4;
}
return r;
}
BN.prototype._parseHex = function _parseHex (number, start, endian) {
// Create possibly bigger array to ensure that it fits the number
this.length = Math.ceil((number.length - start) / 6);
this.words = new Array(this.length);
for (var i = 0; i < this.length; i++) {
this.words[i] = 0;
}
// 24-bits chunks
var off = 0;
var j = 0;
var w;
if (endian === 'be') {
for (i = number.length - 1; i >= start; i -= 2) {
w = parseHexByte(number, start, i) << off;
this.words[j] |= w & 0x3ffffff;
if (off >= 18) {
off -= 18;
j += 1;
this.words[j] |= w >>> 26;
} else {
off += 8;
}
}
} else {
var parseLength = number.length - start;
for (i = parseLength % 2 === 0 ? start + 1 : start; i < number.length; i += 2) {
w = parseHexByte(number, start, i) << off;
this.words[j] |= w & 0x3ffffff;
if (off >= 18) {
off -= 18;
j += 1;
this.words[j] |= w >>> 26;
} else {
off += 8;
}
}
}
this._strip();
};
function parseBase (str, start, end, mul) {
var r = 0;
var b = 0;
var len = Math.min(str.length, end);
for (var i = start; i < len; i++) {
var c = str.charCodeAt(i) - 48;
r *= mul;
// 'a'
if (c >= 49) {
b = c - 49 + 0xa;
// 'A'
} else if (c >= 17) {
b = c - 17 + 0xa;
// '0' - '9'
} else {
b = c;
}
assert(c >= 0 && b < mul, 'Invalid character');
r += b;
}
return r;
}
BN.prototype._parseBase = function _parseBase (number, base, start) {
// Initialize as zero
this.words = [0];
this.length = 1;
// Find length of limb in base
for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
limbLen++;
}
limbLen--;
limbPow = (limbPow / base) | 0;
var total = number.length - start;
var mod = total % limbLen;
var end = Math.min(total, total - mod) + start;
var word = 0;
for (var i = start; i < end; i += limbLen) {
word = parseBase(number, i, i + limbLen, base);
this.imuln(limbPow);
if (this.words[0] + word < 0x4000000) {
this.words[0] += word;
} else {
this._iaddn(word);
}
}
if (mod !== 0) {
var pow = 1;
word = parseBase(number, i, number.length, base);
for (i = 0; i < mod; i++) {
pow *= base;
}
this.imuln(pow);
if (this.words[0] + word < 0x4000000) {
this.words[0] += word;
} else {
this._iaddn(word);
}
}
this._strip();
};
BN.prototype.copy = function copy (dest) {
dest.words = new Array(this.length);
for (var i = 0; i < this.length; i++) {
dest.words[i] = this.words[i];
}
dest.length = this.length;
dest.negative = this.negative;
dest.red = this.red;
};
function move (dest, src) {
dest.words = src.words;
dest.length = src.length;
dest.negative = src.negative;
dest.red = src.red;
}
BN.prototype._move = function _move (dest) {
move(dest, this);
};
BN.prototype.clone = function clone () {
var r = new BN(null);
this.copy(r);
return r;
};
BN.prototype._expand = function _expand (size) {
while (this.length < size) {
this.words[this.length++] = 0;
}
return this;
};
// Remove leading `0` from `this`
BN.prototype._strip = function strip () {
while (this.length > 1 && this.words[this.length - 1] === 0) {
this.length--;
}
return this._normSign();
};
BN.prototype._normSign = function _normSign () {
// -0 = 0
if (this.length === 1 && this.words[0] === 0) {
this.negative = 0;
}
return this;
};
// Check Symbol.for because not everywhere where Symbol defined
// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#Browser_compatibility
if (typeof Symbol !== 'undefined' && typeof Symbol.for === 'function') {
try {
BN.prototype[Symbol.for('nodejs.util.inspect.custom')] = inspect;
} catch (e) {
BN.prototype.inspect = inspect;
}
} else {
BN.prototype.inspect = inspect;
}
function inspect () {
return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
}
/*
var zeros = [];
var groupSizes = [];
var groupBases = [];
var s = '';
var i = -1;
while (++i < BN.wordSize) {
zeros[i] = s;
s += '0';
}
groupSizes[0] = 0;
groupSizes[1] = 0;
groupBases[0] = 0;
groupBases[1] = 0;
var base = 2 - 1;
while (++base < 36 + 1) {
var groupSize = 0;
var groupBase = 1;
while (groupBase < (1 << BN.wordSize) / base) {
groupBase *= base;
groupSize += 1;
}
groupSizes[base] = groupSize;
groupBases[base] = groupBase;
}
*/
var zeros = [
'',
'0',
'00',
'000',
'0000',
'00000',
'000000',
'0000000',
'00000000',
'000000000',
'0000000000',
'00000000000',
'000000000000',
'0000000000000',
'00000000000000',
'000000000000000',
'0000000000000000',
'00000000000000000',
'000000000000000000',
'0000000000000000000',
'00000000000000000000',
'000000000000000000000',
'0000000000000000000000',
'00000000000000000000000',
'000000000000000000000000',
'0000000000000000000000000'
];
var groupSizes = [
0, 0,
25, 16, 12, 11, 10, 9, 8,
8, 7, 7, 7, 7, 6, 6,
6, 6, 6, 6, 6, 5, 5,
5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5
];
var groupBases = [
0, 0,
33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
];
BN.prototype.toString = function toString (base, padding) {
base = base || 10;
padding = padding | 0 || 1;
var out;
if (base === 16 || base === 'hex') {
out = '';
var off = 0;
var carry = 0;
for (var i = 0; i < this.length; i++) {
var w = this.words[i];
var word = (((w << off) | carry) & 0xffffff).toString(16);
carry = (w >>> (24 - off)) & 0xffffff;
off += 2;
if (off >= 26) {
off -= 26;
i--;
}
if (carry !== 0 || i !== this.length - 1) {
out = zeros[6 - word.length] + word + out;
} else {
out = word + out;
}
}
if (carry !== 0) {
out = carry.toString(16) + out;
}
while (out.length % padding !== 0) {
out = '0' + out;
}
if (this.negative !== 0) {
out = '-' + out;
}
return out;
}
if (base === (base | 0) && base >= 2 && base <= 36) {
// var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
var groupSize = groupSizes[base];
// var groupBase = Math.pow(base, groupSize);
var groupBase = groupBases[base];
out = '';
var c = this.clone();
c.negative = 0;
while (!c.isZero()) {
var r = c.modrn(groupBase).toString(base);
c = c.idivn(groupBase);
if (!c.isZero()) {
out = zeros[groupSize - r.length] + r + out;
} else {
out = r + out;
}
}
if (this.isZero()) {
out = '0' + out;
}
while (out.length % padding !== 0) {
out = '0' + out;
}
if (this.negative !== 0) {
out = '-' + out;
}
return out;
}
assert(false, 'Base should be between 2 and 36');
};
BN.prototype.toNumber = function toNumber () {
var ret = this.words[0];
if (this.length === 2) {
ret += this.words[1] * 0x4000000;
} else if (this.length === 3 && this.words[2] === 0x01) {
// NOTE: at this stage it is known that the top bit is set
ret += 0x10000000000000 + (this.words[1] * 0x4000000);
} else if (this.length > 2) {
assert(false, 'Number can only safely store up to 53 bits');
}
return (this.negative !== 0) ? -ret : ret;
};
BN.prototype.toJSON = function toJSON () {
return this.toString(16, 2);
};
if (Buffer) {
BN.prototype.toBuffer = function toBuffer (endian, length) {
return this.toArrayLike(Buffer, endian, length);
};
}
BN.prototype.toArray = function toArray (endian, length) {
return this.toArrayLike(Array, endian, length);
};
var allocate = function allocate (ArrayType, size) {
if (ArrayType.allocUnsafe) {
return ArrayType.allocUnsafe(size);
}
return new ArrayType(size);
};
BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
this._strip();
var byteLength = this.byteLength();
var reqLength = length || Math.max(1, byteLength);
assert(byteLength <= reqLength, 'byte array longer than desired length');
assert(reqLength > 0, 'Requested array length <= 0');
var res = allocate(ArrayType, reqLength);
var postfix = endian === 'le' ? 'LE' : 'BE';
this['_toArrayLike' + postfix](res, byteLength);
return res;
};
BN.prototype._toArrayLikeLE = function _toArrayLikeLE (res, byteLength) {
var position = 0;
var carry = 0;
for (var i = 0, shift = 0; i < this.length; i++) {
var word = (this.words[i] << shift) | carry;
res[position++] = word & 0xff;
if (position < res.length) {
res[position++] = (word >> 8) & 0xff;
}
if (position < res.length) {
res[position++] = (word >> 16) & 0xff;
}
if (shift === 6) {
if (position < res.length) {
res[position++] = (word >> 24) & 0xff;
}
carry = 0;
shift = 0;
} else {
carry = word >>> 24;
shift += 2;
}
}
if (position < res.length) {
res[position++] = carry;
while (position < res.length) {
res[position++] = 0;
}
}
};
BN.prototype._toArrayLikeBE = function _toArrayLikeBE (res, byteLength) {
var position = res.length - 1;
var carry = 0;
for (var i = 0, shift = 0; i < this.length; i++) {
var word = (this.words[i] << shift) | carry;
res[position--] = word & 0xff;
if (position >= 0) {
res[position--] = (word >> 8) & 0xff;
}
if (position >= 0) {
res[position--] = (word >> 16) & 0xff;
}
if (shift === 6) {
if (position >= 0) {
res[position--] = (word >> 24) & 0xff;
}
carry = 0;
shift = 0;
} else {
carry = word >>> 24;
shift += 2;
}
}
if (position >= 0) {
res[position--] = carry;
while (position >= 0) {
res[position--] = 0;
}
}
};
if (Math.clz32) {
BN.prototype._countBits = function _countBits (w) {
return 32 - Math.clz32(w);
};
} else {
BN.prototype._countBits = function _countBits (w) {
var t = w;
var r = 0;
if (t >= 0x1000) {
r += 13;
t >>>= 13;
}
if (t >= 0x40) {
r += 7;
t >>>= 7;
}
if (t >= 0x8) {
r += 4;
t >>>= 4;
}
if (t >= 0x02) {
r += 2;
t >>>= 2;
}
return r + t;
};
}
BN.prototype._zeroBits = function _zeroBits (w) {
// Short-cut
if (w === 0) return 26;
var t = w;
var r = 0;
if ((t & 0x1fff) === 0) {
r += 13;
t >>>= 13;
}
if ((t & 0x7f) === 0) {
r += 7;
t >>>= 7;
}
if ((t & 0xf) === 0) {
r += 4;
t >>>= 4;
}
if ((t & 0x3) === 0) {
r += 2;
t >>>= 2;
}
if ((t & 0x1) === 0) {
r++;
}
return r;
};
// Return number of used bits in a BN
BN.prototype.bitLength = function bitLength () {
var w = this.words[this.length - 1];
var hi = this._countBits(w);
return (this.length - 1) * 26 + hi;
};
function toBitArray (num) {
var w = new Array(num.bitLength());
for (var bit = 0; bit < w.length; bit++) {
var off = (bit / 26) | 0;
var wbit = bit % 26;
w[bit] = (num.words[off] >>> wbit) & 0x01;
}
return w;
}
// Number of trailing zero bits
BN.prototype.zeroBits = function zeroBits () {
if (this.isZero()) return 0;
var r = 0;
for (var i = 0; i < this.length; i++) {
var b = this._zeroBits(this.words[i]);
r += b;
if (b !== 26) break;
}
return r;
};
BN.prototype.byteLength = function byteLength () {
return Math.ceil(this.bitLength() / 8);
};
BN.prototype.toTwos = function toTwos (width) {
if (this.negative !== 0) {
return this.abs().inotn(width).iaddn(1);
}
return this.clone();
};
BN.prototype.fromTwos = function fromTwos (width) {
if (this.testn(width - 1)) {
return this.notn(width).iaddn(1).ineg();
}
return this.clone();
};
BN.prototype.isNeg = function isNeg () {
return this.negative !== 0;
};
// Return negative clone of `this`
BN.prototype.neg = function neg () {
return this.clone().ineg();
};
BN.prototype.ineg = function ineg () {
if (!this.isZero()) {
this.negative ^= 1;
}
return this;
};
// Or `num` with `this` in-place
BN.prototype.iuor = function iuor (num) {
while (this.length < num.length) {
this.words[this.length++] = 0;
}
for (var i = 0; i < num.length; i++) {
this.words[i] = this.words[i] | num.words[i];
}
return this._strip();
};
BN.prototype.ior = function ior (num) {
assert((this.negative | num.negative) === 0);
return this.iuor(num);
};
// Or `num` with `this`
BN.prototype.or = function or (num) {
if (this.length > num.length) return this.clone().ior(num);
return num.clone().ior(this);
};
BN.prototype.uor = function uor (num) {
if (this.length > num.length) return this.clone().iuor(num);
return num.clone().iuor(this);
};
// And `num` with `this` in-place
BN.prototype.iuand = function iuand (num) {
// b = min-length(num, this)
var b;
if (this.length > num.length) {
b = num;
} else {
b = this;
}
for (var i = 0; i < b.length; i++) {
this.words[i] = this.words[i] & num.words[i];
}
this.length = b.length;
return this._strip();
};
BN.prototype.iand = function iand (num) {
assert((this.negative | num.negative) === 0);
return this.iuand(num);
};
// And `num` with `this`
BN.prototype.and = function and (num) {
if (this.length > num.length) return this.clone().iand(num);
return num.clone().iand(this);
};
BN.prototype.uand = function uand (num) {
if (this.length > num.length) return this.clone().iuand(num);
return num.clone().iuand(this);
};
// Xor `num` with `this` in-place
BN.prototype.iuxor = function iuxor (num) {
// a.length > b.length
var a;
var b;
if (this.length > num.length) {
a = this;
b = num;
} else {
a = num;
b = this;
}
for (var i = 0; i < b.length; i++) {
this.words[i] = a.words[i] ^ b.words[i];
}
if (this !== a) {
for (; i < a.length; i++) {
this.words[i] = a.words[i];
}
}
this.length = a.length;
return this._strip();
};
BN.prototype.ixor = function ixor (num) {
assert((this.negative | num.negative) === 0);
return this.iuxor(num);
};
// Xor `num` with `this`
BN.prototype.xor = function xor (num) {
if (this.length > num.length) return this.clone().ixor(num);
return num.clone().ixor(this);
};
BN.prototype.uxor = function uxor (num) {
if (this.length > num.length) return this.clone().iuxor(num);
return num.clone().iuxor(this);
};
// Not ``this`` with ``width`` bitwidth
BN.prototype.inotn = function inotn (width) {
assert(typeof width === 'number' && width >= 0);
var bytesNeeded = Math.ceil(width / 26) | 0;
var bitsLeft = width % 26;
// Extend the buffer with leading zeroes
this._expand(bytesNeeded);
if (bitsLeft > 0) {
bytesNeeded--;
}
// Handle complete words
for (var i = 0; i < bytesNeeded; i++) {
this.words[i] = ~this.words[i] & 0x3ffffff;
}
// Handle the residue
if (bitsLeft > 0) {
this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
}
// And remove leading zeroes
return this._strip();
};
BN.prototype.notn = function notn (width) {
return this.clone().inotn(width);
};
// Set `bit` of `this`
BN.prototype.setn = function setn (bit, val) {
assert(typeof bit === 'number' && bit >= 0);
var off = (bit / 26) | 0;
var wbit = bit % 26;
this._expand(off + 1);
if (val) {
this.words[off] = this.words[off] | (1 << wbit);
} else {
this.words[off] = this.words[off] & ~(1 << wbit);
}
return this._strip();
};
// Add `num` to `this` in-place
BN.prototype.iadd = function iadd (num) {
var r;
// negative + positive
if (this.negative !== 0 && num.negative === 0) {
this.negative = 0;
r = this.isub(num);
this.negative ^= 1;
return this._normSign();
// positive + negative
} else if (this.negative === 0 && num.negative !== 0) {
num.negative = 0;
r = this.isub(num);
num.negative = 1;
return r._normSign();
}
// a.length > b.length
var a, b;
if (this.length > num.length) {
a = this;
b = num;
} else {
a = num;
b = this;
}
var carry = 0;
for (var i = 0; i < b.length; i++) {
r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
this.words[i] = r & 0x3ffffff;
carry = r >>> 26;
}
for (; carry !== 0 && i < a.length; i++) {
r = (a.words[i] | 0) + carry;
this.words[i] = r & 0x3ffffff;
carry = r >>> 26;
}
this.length = a.length;
if (carry !== 0) {
this.words[this.length] = carry;
this.length++;
// Copy the rest of the words
} else if (a !== this) {
for (; i < a.length; i++) {
this.words[i] = a.words[i];
}
}
return this;
};
// Add `num` to `this`
BN.prototype.add = function add (num) {
var res;
if (num.negative !== 0 && this.negative === 0) {
num.negative = 0;
res = this.sub(num);
num.negative ^= 1;
return res;
} else if (num.negative === 0 && this.negative !== 0) {
this.negative = 0;
res = num.sub(this);
this.negative = 1;
return res;
}
if (this.length > num.length) return this.clone().iadd(num);
return num.clone().iadd(this);
};
// Subtract `num` from `this` in-place
BN.prototype.isub = function isub (num) {
// this - (-num) = this + num
if (num.negative !== 0) {
num.negative = 0;
var r = this.iadd(num);
num.negative = 1;
return r._normSign();
// -this - num = -(this + num)
} else if (this.negative !== 0) {
this.negative = 0;
this.iadd(num);
this.negative = 1;
return this._normSign();
}
// At this point both numbers are positive
var cmp = this.cmp(num);
// Optimization - zeroify
if (cmp === 0) {
this.negative = 0;
this.length = 1;
this.words[0] = 0;
return this;
}
// a > b
var a, b;
if (cmp > 0) {
a = this;
b = num;
} else {
a = num;
b = this;
}
var carry = 0;
for (var i = 0; i < b.length; i++) {
r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
carry = r >> 26;
this.words[i] = r & 0x3ffffff;
}
for (; carry !== 0 && i < a.length; i++) {
r = (a.words[i] | 0) + carry;
carry = r >> 26;
this.words[i] = r & 0x3ffffff;
}
// Copy rest of the words
if (carry === 0 && i < a.length && a !== this) {
for (; i < a.length; i++) {
this.words[i] = a.words[i];
}
}
this.length = Math.max(this.length, i);
if (a !== this) {
this.negative = 1;
}
return this._strip();
};
// Subtract `num` from `this`
BN.prototype.sub = function sub (num) {
return this.clone().isub(num);
};
function smallMulTo (self, num, out) {
out.negative = num.negative ^ self.negative;
var len = (self.length + num.length) | 0;
out.length = len;
len = (len - 1) | 0;
// Peel one iteration (compiler can't do it, because of code complexity)
var a = self.words[0] | 0;
var b = num.words[0] | 0;
var r = a * b;
var lo = r & 0x3ffffff;
var carry = (r / 0x4000000) | 0;
out.words[0] = lo;
for (var k = 1; k < len; k++) {
// Sum all words with the same `i + j = k` and accumulate `ncarry`,
// note that ncarry could be >= 0x3ffffff
var ncarry = carry >>> 26;
var rword = carry & 0x3ffffff;
var maxJ = Math.min(k, num.length - 1);
for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
var i = (k - j) | 0;
a = self.words[i] | 0;
b = num.words[j] | 0;
r = a * b + rword;
ncarry += (r / 0x4000000) | 0;
rword = r & 0x3ffffff;
}
out.words[k] = rword | 0;
carry = ncarry | 0;
}
if (carry !== 0) {
out.words[k] = carry | 0;
} else {
out.length--;
}
return out._strip();
}
// TODO(indutny): it may be reasonable to omit it for users who don't need
// to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
// multiplication (like elliptic secp256k1).
var comb10MulTo = function comb10MulTo (self, num, out) {
var a = self.words;
var b = num.words;
var o = out.words;
var c = 0;
var lo;
var mid;
var hi;
var a0 = a[0] | 0;
var al0 = a0 & 0x1fff;
var ah0 = a0 >>> 13;
var a1 = a[1] | 0;
var al1 = a1 & 0x1fff;
var ah1 = a1 >>> 13;
var a2 = a[2] | 0;
var al2 = a2 & 0x1fff;
var ah2 = a2 >>> 13;
var a3 = a[3] | 0;
var al3 = a3 & 0x1fff;
var ah3 = a3 >>> 13;
var a4 = a[4] | 0;
var al4 = a4 & 0x1fff;
var ah4 = a4 >>> 13;
var a5 = a[5] | 0;
var al5 = a5 & 0x1fff;
var ah5 = a5 >>> 13;
var a6 = a[6] | 0;
var al6 = a6 & 0x1fff;
var ah6 = a6 >>> 13;
var a7 = a[7] | 0;
var al7 = a7 & 0x1fff;
var ah7 = a7 >>> 13;
var a8 = a[8] | 0;
var al8 = a8 & 0x1fff;
var ah8 = a8 >>> 13;
var a9 = a[9] | 0;
var al9 = a9 & 0x1fff;
var ah9 = a9 >>> 13;
var b0 = b[0] | 0;
var bl0 = b0 & 0x1fff;
var bh0 = b0 >>> 13;
var b1 = b[1] | 0;
var bl1 = b1 & 0x1fff;
var bh1 = b1 >>> 13;
var b2 = b[2] | 0;
var bl2 = b2 & 0x1fff;
var bh2 = b2 >>> 13;
var b3 = b[3] | 0;
var bl3 = b3 & 0x1fff;
var bh3 = b3 >>> 13;
var b4 = b[4] | 0;
var bl4 = b4 & 0x1fff;
var bh4 = b4 >>> 13;
var b5 = b[5] | 0;
var bl5 = b5 & 0x1fff;
var bh5 = b5 >>> 13;
var b6 = b[6] | 0;
var bl6 = b6 & 0x1fff;
var bh6 = b6 >>> 13;
var b7 = b[7] | 0;
var bl7 = b7 & 0x1fff;
var bh7 = b7 >>> 13;
var b8 = b[8] | 0;
var bl8 = b8 & 0x1fff;
var bh8 = b8 >>> 13;
var b9 = b[9] | 0;
var bl9 = b9 & 0x1fff;
var bh9 = b9 >>> 13;
out.negative = self.negative ^ num.negative;
out.length = 19;
/* k = 0 */
lo = Math.imul(al0, bl0);
mid = Math.imul(al0, bh0);
mid = (mid + Math.imul(ah0, bl0)) | 0;
hi = Math.imul(ah0, bh0);
var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
w0 &= 0x3ffffff;
/* k = 1 */
lo = Math.imul(al1, bl0);
mid = Math.imul(al1, bh0);
mid = (mid + Math.imul(ah1, bl0)) | 0;
hi = Math.imul(ah1, bh0);
lo = (lo + Math.imul(al0, bl1)) | 0;
mid = (mid + Math.imul(al0, bh1)) | 0;
mid = (mid + Math.imul(ah0, bl1)) | 0;
hi = (hi + Math.imul(ah0, bh1)) | 0;
var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
w1 &= 0x3ffffff;
/* k = 2 */
lo = Math.imul(al2, bl0);
mid = Math.imul(al2, bh0);
mid =