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web3.js
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Merge pull request #11 from debris/master 

Update
This commit is contained in:
Marian OANCΞA 2014-11-18 09:21:06 +02:00
parent 1a9624af51 27a8799e48
commit 8fe16df6c9
11 changed files with 206 additions and 25 deletions
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5
.travis.yml
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@ -4,5 +4,8 @@ node_js:
- "0.10"
before_script:
- npm install
- npm install jshint
script:
- "jshint *.js lib"
after_script:
- npm run-script gulp
- npm run-script gulp

14
dist/ethereum.js vendored
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10
dist/ethereum.js.map vendored
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2
dist/ethereum.min.js vendored
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75
example/contract.html Normal file
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@ -0,0 +1,75 @@
<!doctype>
<html>
<head>
<script type="text/javascript" src="js/es6-promise/promise.min.js"></script>
<script type="text/javascript" src="../dist/ethereum.js"></script>
<script type="text/javascript">
var web3 = require('web3');
web3.setProvider(new web3.providers.AutoProvider());
// solidity source code
var source = "" +
"contract test {\n" +
" function multiply(uint a) returns(uint d) {\n" +
" return a * 7;\n" +
" }\n" +
"}\n";
// contract description, this will be autogenerated somehow
var desc = [{
"name": "multiply",
"inputs": [
{
"name": "a",
"type": "uint256"
}
],
"outputs": [
{
"name": "d",
"type": "uint256"
}
]
}];
var contract;
function createExampleContract() {
// hide create button
document.getElementById('create').style.visibility = 'hidden';
document.getElementById('source').innerText = source;
// create contract
web3.eth.transact({code: web3.eth.solidity(source)}).then(function (address) {
contract = web3.contract(address, desc);
document.getElementById('call').style.visibility = 'visible';
});
}
function callExampleContract() {
// this should be generated by ethereum
var param = document.getElementById('value').value;
// call the contract
contract.multiply(param).call().then(function(res) {
document.getElementById('result').innerText = res[0];
});
}
</script>
</head>
<body>
<h1>contract</h1>
<div id="source"></div>
<div id='create'>
<button type="button" onClick="createExampleContract();">create example contract</button>
</div>
<div id='call' style='visibility: hidden;'>
<input type="number" id="value" onkeyup='callExampleContract()'></input>
</div>
<div id="result"></div>
</body>
</html>

2
example/index.html
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@ -30,7 +30,7 @@
</script>
</head>
<body>
<h1>balance</h1>
<h1>coinbase balance</h1>
<button type="button" onClick="watchBalance();">watch balance</button>
<div></div>
<div id="original"></div>

2
index.js
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@ -3,6 +3,6 @@ web3.providers.WebSocketProvider = require('./lib/websocket');
web3.providers.HttpRpcProvider = require('./lib/httprpc');
web3.providers.QtProvider = require('./lib/qt');
web3.providers.AutoProvider = require('./lib/autoprovider');
web3.contract = require('./lib/abi');
web3.contract = require('./lib/contract');
module.exports = web3;

2
index_qt.js
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@ -1,5 +1,5 @@
var web3 = require('./lib/main');
web3.providers.QtProvider = require('./lib/qt');
web3.abi = require('./lib/abi');
web3.contract = require('./lib/contract');
module.exports = web3;

48
lib/abi.js
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@ -1,3 +1,24 @@
/*
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>
* @date 2014
*/
var findIndex = function (array, callback) {
var end = false;
@ -71,7 +92,8 @@ var toAbiInput = function (json, methodName, params) {
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]);
var val = parseInt(params[i]).toString(16);
found = inputTypes[j](method.inputs[i].type, val);
}
if (!found) {
console.error('unsupported json type: ' + method.inputs[i].type);
@ -148,17 +170,31 @@ var fromAbiOutput = function (json, methodName, output) {
return result;
};
var load = function (json) {
var contract = {};
var inputParser = function (json) {
var parser = {};
json.forEach(function (method) {
contract[method.name] = function () {
parser[method.name] = function () {
var params = Array.prototype.slice.call(arguments);
return toAbiInput(json, method.name, params);
};
});
return contract;
return parser;
};
module.exports = load;
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
};

63
lib/contract.js Normal file
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@ -0,0 +1,63 @@
/*
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 contract.js
* @authors:
* Marek Kotewicz <marek@ethdev.com>
* @date 2014
*/
if (process.env.NODE_ENV !== 'build') {
var web3 = require('./web3'); // jshint ignore:line
}
var abi = require('./abi');
var contract = function (address, desc) {
var inputParser = abi.inputParser(desc);
var outputParser = abi.outputParser(desc);
var contract = {};
desc.forEach(function (method) {
contract[method.name] = function () {
var params = Array.prototype.slice.call(arguments);
var parsed = inputParser[method.name].apply(null, params);
var onSuccess = function (result) {
return outputParser[method.name](result);
};
return {
call: function (extra) {
extra = extra || {};
extra.to = address;
extra.data = parsed;
return web3.eth.call(extra).then(onSuccess);
},
transact: function (extra) {
extra = extra || {};
extra.to = address;
extra.data = parsed;
return web3.eth.transact(extra).then(onSuccess);
}
};
};
});
return contract;
};
module.exports = contract;

8
lib/main.js
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@ -87,7 +87,8 @@ var ethMethods = function () {
{ name: 'uncle', call: uncleCall },
{ name: 'compilers', call: 'eth_compilers' },
{ name: 'lll', call: 'eth_lll' },
{ name: 'solidity', call: 'eth_solidity' }
{ name: 'solidity', call: 'eth_solidity' },
{ name: 'serpent', call: 'eth_serpent' }
];
return methods;
};
@ -292,9 +293,8 @@ var web3 = {
}
};
var eth = web3.eth;
setupMethods(eth, ethMethods());
setupProperties(eth, ethProperties());
setupMethods(web3.eth, ethMethods());
setupProperties(web3.eth, ethProperties());
setupMethods(web3.db, dbMethods());
setupMethods(web3.shh, shhMethods());