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Diffstat (limited to 'cmd/ethtest/lib/abi.js')
-rw-r--r-- | cmd/ethtest/lib/abi.js | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/cmd/ethtest/lib/abi.js b/cmd/ethtest/lib/abi.js deleted file mode 100644 index 2cff503d3..000000000 --- a/cmd/ethtest/lib/abi.js +++ /dev/null @@ -1,218 +0,0 @@ -/* - This file is part of ethereum.js. - - ethereum.js 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. - - ethereum.js 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 ethereum.js. If not, see <http://www.gnu.org/licenses/>. -*/ -/** @file abi.js - * @authors: - * Marek Kotewicz <marek@ethdev.com> - * Gav Wood <g@ethdev.com> - * @date 2014 - */ - -// TODO: make these be actually accurate instead of falling back onto JS's doubles. -var hexToDec = function (hex) { - return parseInt(hex, 16).toString(); -}; - -var decToHex = function (dec) { - return parseInt(dec).toString(16); -}; - -var findIndex = function (array, callback) { - var end = false; - var i = 0; - for (; i < array.length && !end; i++) { - end = callback(array[i]); - } - return end ? i - 1 : -1; -}; - -var findMethodIndex = function (json, methodName) { - return findIndex(json, function (method) { - return method.name === methodName; - }); -}; - -var padLeft = function (string, chars) { - return Array(chars - string.length + 1).join("0") + string; -}; - -var setupInputTypes = function () { - var prefixedType = function (prefix) { - return function (type, value) { - var expected = prefix; - if (type.indexOf(expected) !== 0) { - return false; - } - - var padding = parseInt(type.slice(expected.length)) / 8; - if (typeof value === "number") - value = value.toString(16); - else if (value.indexOf('0x') === 0) - value = value.substr(2); - else - value = (+value).toString(16); - return padLeft(value, padding * 2); - }; - }; - - var namedType = function (name, padding, formatter) { - return function (type, value) { - if (type !== name) { - return false; - } - - return padLeft(formatter ? formatter(value) : value, padding * 2); - }; - }; - - var formatBool = function (value) { - return value ? '0x1' : '0x0'; - }; - - return [ - prefixedType('uint'), - prefixedType('int'), - prefixedType('hash'), - namedType('address', 20), - namedType('bool', 1, formatBool), - ]; -}; - -var inputTypes = setupInputTypes(); - -var toAbiInput = function (json, methodName, params) { - var bytes = ""; - var index = findMethodIndex(json, methodName); - - if (index === -1) { - return; - } - - bytes = "0x" + padLeft(index.toString(16), 2); - var method = json[index]; - - for (var i = 0; i < method.inputs.length; i++) { - var found = false; - for (var j = 0; j < inputTypes.length && !found; j++) { - found = inputTypes[j](method.inputs[i].type, params[i]); - } - if (!found) { - console.error('unsupported json type: ' + method.inputs[i].type); - } - bytes += found; - } - return bytes; -}; - -var setupOutputTypes = function () { - var prefixedType = function (prefix) { - return function (type) { - var expected = prefix; - if (type.indexOf(expected) !== 0) { - return -1; - } - - var padding = parseInt(type.slice(expected.length)) / 8; - return padding * 2; - }; - }; - - var namedType = function (name, padding) { - return function (type) { - return name === type ? padding * 2 : -1; - }; - }; - - var formatInt = function (value) { - return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value); - }; - - var formatHash = function (value) { - return "0x" + value; - }; - - var formatBool = function (value) { - return value === '1' ? true : false; - }; - - return [ - { padding: prefixedType('uint'), format: formatInt }, - { padding: prefixedType('int'), format: formatInt }, - { padding: prefixedType('hash'), format: formatHash }, - { padding: namedType('address', 20) }, - { padding: namedType('bool', 1), format: formatBool } - ]; -}; - -var outputTypes = setupOutputTypes(); - -var fromAbiOutput = function (json, methodName, output) { - var index = findMethodIndex(json, methodName); - - if (index === -1) { - return; - } - - output = output.slice(2); - - var result = []; - var method = json[index]; - for (var i = 0; i < method.outputs.length; i++) { - var padding = -1; - for (var j = 0; j < outputTypes.length && padding === -1; j++) { - padding = outputTypes[j].padding(method.outputs[i].type); - } - - if (padding === -1) { - // not found output parsing - continue; - } - var res = output.slice(0, padding); - var formatter = outputTypes[j - 1].format; - result.push(formatter ? formatter(res) : ("0x" + res)); - output = output.slice(padding); - } - - return result; -}; - -var inputParser = function (json) { - var parser = {}; - json.forEach(function (method) { - parser[method.name] = function () { - var params = Array.prototype.slice.call(arguments); - return toAbiInput(json, method.name, params); - }; - }); - - return parser; -}; - -var outputParser = function (json) { - var parser = {}; - json.forEach(function (method) { - parser[method.name] = function (output) { - return fromAbiOutput(json, method.name, output); - }; - }); - - return parser; -}; - -module.exports = { - inputParser: inputParser, - outputParser: outputParser -}; |