improved contracts interface
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42
lib/main.js
42
lib/main.js
@ -22,6 +22,8 @@
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* @date 2014
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*/
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var abi = require('./abi');
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function flattenPromise (obj) {
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if (obj instanceof Promise) {
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return Promise.resolve(obj);
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@ -292,9 +294,8 @@ var web3 = {
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}
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};
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var eth = web3.eth;
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setupMethods(eth, ethMethods());
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setupProperties(eth, ethProperties());
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setupMethods(web3.eth, ethMethods());
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setupProperties(web3.eth, ethProperties());
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setupMethods(web3.db, dbMethods());
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setupMethods(web3.shh, shhMethods());
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@ -454,5 +455,40 @@ function messageHandler(data) {
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}
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}
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web3.contract = function (address, desc) {
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var inputParser = abi.inputParser(desc);
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var outputParser = abi.outputParser(desc);
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var contract = {};
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desc.forEach(function (method) {
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contract[method.name] = function () {
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var params = Array.prototype.slice.call(arguments);
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var parsed = inputParser[method.name].apply(null, params);
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var onSuccess = function (result) {
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return outputParser[method.name](result);
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};
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return {
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call: function (extra) {
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extra = extra || {};
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extra.to = address;
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extra.data = parsed;
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return web3.eth.call(extra).then(onSuccess);
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},
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transact: function (extra) {
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extra = extra || {};
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extra.to = address;
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extra.data = parsed;
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return web3.eth.transact(extra).then(onSuccess);
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}
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};
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};
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});
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return contract;
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};
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module.exports = web3;
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