removed old ethereum.js
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obscuren
@ -1,267 +0,0 @@
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/*
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This file is part of ethereum.js.
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ethereum.js is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser 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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ethereum.js 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with ethereum.js. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file abi.js
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* @authors:
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* Marek Kotewicz <marek@ethdev.com>
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* Gav Wood <g@ethdev.com>
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* @date 2014
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*/
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// TODO: is these line is supposed to be here?
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if (process.env.NODE_ENV !== 'build') {
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var web3 = require('./web3'); // jshint ignore:line
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}
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// TODO: make these be actually accurate instead of falling back onto JS's doubles.
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var hexToDec = function (hex) {
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return parseInt(hex, 16).toString();
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};
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var decToHex = function (dec) {
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return parseInt(dec).toString(16);
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};
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var findIndex = function (array, callback) {
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var end = false;
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var i = 0;
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for (; i < array.length && !end; i++) {
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end = callback(array[i]);
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}
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return end ? i - 1 : -1;
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};
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var findMethodIndex = function (json, methodName) {
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return findIndex(json, function (method) {
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return method.name === methodName;
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});
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};
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var padLeft = function (string, chars) {
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return new Array(chars - string.length + 1).join("0") + string;
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};
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var calcBitPadding = function (type, expected) {
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var value = type.slice(expected.length);
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if (value === "") {
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return 32;
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}
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return parseInt(value) / 8;
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};
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var calcBytePadding = function (type, expected) {
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var value = type.slice(expected.length);
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if (value === "") {
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return 32;
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}
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return parseInt(value);
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};
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var calcRealPadding = function (type, expected) {
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var value = type.slice(expected.length);
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if (value === "") {
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return 32;
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}
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var sizes = value.split('x');
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for (var padding = 0, i = 0; i < sizes; i++) {
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padding += (sizes[i] / 8);
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}
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return padding;
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};
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var setupInputTypes = function () {
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var prefixedType = function (prefix, calcPadding) {
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return function (type, value) {
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var expected = prefix;
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if (type.indexOf(expected) !== 0) {
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return false;
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}
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var padding = calcPadding(type, expected);
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if (typeof value === "number")
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value = value.toString(16);
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else if (typeof value === "string")
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value = web3.toHex(value);
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else if (value.indexOf('0x') === 0)
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value = value.substr(2);
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else
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value = (+value).toString(16);
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return padLeft(value, padding * 2);
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};
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};
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var namedType = function (name, padding, formatter) {
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return function (type, value) {
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if (type !== name) {
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return false;
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}
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return padLeft(formatter ? formatter(value) : value, padding * 2);
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};
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};
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var formatBool = function (value) {
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return value ? '0x1' : '0x0';
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};
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return [
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prefixedType('uint', calcBitPadding),
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prefixedType('int', calcBitPadding),
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prefixedType('hash', calcBitPadding),
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prefixedType('string', calcBytePadding),
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prefixedType('real', calcRealPadding),
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prefixedType('ureal', calcRealPadding),
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namedType('address', 20),
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namedType('bool', 1, formatBool),
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];
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};
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var inputTypes = setupInputTypes();
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var toAbiInput = function (json, methodName, params) {
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var bytes = "";
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var index = findMethodIndex(json, methodName);
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if (index === -1) {
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return;
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}
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bytes = "0x" + padLeft(index.toString(16), 2);
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var method = json[index];
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for (var i = 0; i < method.inputs.length; i++) {
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var found = false;
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for (var j = 0; j < inputTypes.length && !found; j++) {
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found = inputTypes[j](method.inputs[i].type, params[i]);
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}
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if (!found) {
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console.error('unsupported json type: ' + method.inputs[i].type);
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}
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bytes += found;
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}
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return bytes;
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};
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var setupOutputTypes = function () {
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var prefixedType = function (prefix, calcPadding) {
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return function (type) {
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var expected = prefix;
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if (type.indexOf(expected) !== 0) {
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return -1;
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}
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var padding = calcPadding(type, expected);
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return padding * 2;
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};
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};
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var namedType = function (name, padding) {
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return function (type) {
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return name === type ? padding * 2 : -1;
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};
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};
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var formatInt = function (value) {
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return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);
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};
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var formatHash = function (value) {
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return "0x" + value;
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};
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var formatBool = function (value) {
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return value === '1' ? true : false;
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};
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var formatString = function (value) {
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return web3.toAscii(value);
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};
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return [
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{ padding: prefixedType('uint', calcBitPadding), format: formatInt },
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{ padding: prefixedType('int', calcBitPadding), format: formatInt },
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{ padding: prefixedType('hash', calcBitPadding), format: formatHash },
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{ padding: prefixedType('string', calcBytePadding), format: formatString },
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{ padding: prefixedType('real', calcRealPadding), format: formatInt },
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{ padding: prefixedType('ureal', calcRealPadding), format: formatInt },
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{ padding: namedType('address', 20) },
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{ padding: namedType('bool', 1), format: formatBool }
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];
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};
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var outputTypes = setupOutputTypes();
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var fromAbiOutput = function (json, methodName, output) {
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var index = findMethodIndex(json, methodName);
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if (index === -1) {
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return;
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}
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output = output.slice(2);
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var result = [];
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var method = json[index];
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for (var i = 0; i < method.outputs.length; i++) {
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var padding = -1;
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for (var j = 0; j < outputTypes.length && padding === -1; j++) {
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padding = outputTypes[j].padding(method.outputs[i].type);
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}
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if (padding === -1) {
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// not found output parsing
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continue;
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}
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var res = output.slice(0, padding);
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var formatter = outputTypes[j - 1].format;
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result.push(formatter ? formatter(res) : ("0x" + res));
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output = output.slice(padding);
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}
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return result;
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};
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var inputParser = function (json) {
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var parser = {};
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json.forEach(function (method) {
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parser[method.name] = function () {
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var params = Array.prototype.slice.call(arguments);
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return toAbiInput(json, method.name, params);
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};
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});
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return parser;
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};
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var outputParser = function (json) {
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var parser = {};
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json.forEach(function (method) {
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parser[method.name] = function (output) {
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return fromAbiOutput(json, method.name, output);
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};
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});
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return parser;
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};
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if (typeof(module) !== "undefined") {
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module.exports = {
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inputParser: inputParser,
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outputParser: outputParser
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};
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}
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