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106 lines
3.4 KiB
106 lines
3.4 KiB
/*
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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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/**
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* @file contract.js
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* @author Marek Kotewicz <marek@ethdev.com>
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* @date 2014
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*/
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var web3 = require('../web3');
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var solAbi = require('../solidity/abi');
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var utils = require('../utils/utils');
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var SolidityEvent = require('./event');
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var SolidityFunction = require('./function');
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var addFunctionsToContract = function (contract, desc) {
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desc.filter(function (json) {
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return json.type === 'function';
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}).map(function (json) {
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return new SolidityFunction(json, contract.address);
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}).forEach(function (f) {
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f.attachToContract(contract);
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});
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};
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var addEventsToContract = function (contract, desc) {
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desc.filter(function (json) {
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return json.type === 'event';
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}).map(function (json) {
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return new SolidityEvent(json, contract.address);
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}).forEach(function (e) {
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e.attachToContract(contract);
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});
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};
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/**
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* This method should be called when we want to call / transact some solidity method from javascript
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* it returns an object which has same methods available as solidity contract description
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* usage example:
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*
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* var abi = [{
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* name: 'myMethod',
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* inputs: [{ name: 'a', type: 'string' }],
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* outputs: [{name: 'd', type: 'string' }]
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* }]; // contract abi
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*
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* var MyContract = web3.eth.contract(abi); // creation of contract prototype
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*
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* var contractInstance = new MyContract('0x0123123121');
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*
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* contractInstance.myMethod('this is test string param for call'); // myMethod call (implicit, default)
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* contractInstance.call().myMethod('this is test string param for call'); // myMethod call (explicit)
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* contractInstance.sendTransaction().myMethod('this is test string param for transact'); // myMethod sendTransaction
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*
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* @param abi - abi json description of the contract, which is being created
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* @returns contract object
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*/
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var contract = function (abi) {
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// return prototype
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return Contract.bind(null, abi);
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};
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var Contract = function (abi, options) {
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this.address = '';
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if (utils.isAddress(options)) {
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this.address = options;
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} else { // is an object!
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// TODO, parse the rest of the args
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options = options || {};
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var args = Array.prototype.slice.call(arguments, 2);
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var bytes = solAbi.formatConstructorParams(abi, args);
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options.data += bytes;
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this.address = web3.eth.sendTransaction(options);
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}
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addFunctionsToContract(this, abi);
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addEventsToContract(this, abi);
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};
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Contract.prototype.call = function () {
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console.error('contract.call is deprecated');
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return this;
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};
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Contract.prototype.sendTransaction = function () {
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console.error('contract.sendTransact is deprecated');
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return this;
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};
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module.exports = contract;
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