diff options
Diffstat (limited to 'cmd/mist/assets/ext/ethereum.js/lib/contract.js')
-rw-r--r-- | cmd/mist/assets/ext/ethereum.js/lib/contract.js | 139 |
1 files changed, 109 insertions, 30 deletions
diff --git a/cmd/mist/assets/ext/ethereum.js/lib/contract.js b/cmd/mist/assets/ext/ethereum.js/lib/contract.js index dc84eb996..e71734d0b 100644 --- a/cmd/mist/assets/ext/ethereum.js/lib/contract.js +++ b/cmd/mist/assets/ext/ethereum.js/lib/contract.js @@ -20,47 +20,126 @@ * @date 2014 */ -// TODO: is these line is supposed to be here? -if (process.env.NODE_ENV !== 'build') { - var web3 = require('./web3'); // jshint ignore:line -} - +var web3 = require('./web3'); // jshint ignore:line var abi = require('./abi'); +/** + * This method should be called when we want to call / transact some solidity method from javascript + * it returns an object which has same methods available as solidity contract description + * usage example: + * + * var abi = [{ + * name: 'myMethod', + * inputs: [{ name: 'a', type: 'string' }], + * outputs: [{name: 'd', type: 'string' }] + * }]; // contract abi + * + * var myContract = web3.eth.contract('0x0123123121', abi); // creation of contract object + * + * myContract.myMethod('this is test string param for call'); // myMethod call (implicit, default) + * myContract.call().myMethod('this is test string param for call'); // myMethod call (explicit) + * myContract.transact().myMethod('this is test string param for transact'); // myMethod transact + * + * @param address - address of the contract, which should be called + * @param desc - abi json description of the contract, which is being created + * @returns contract object + */ + var contract = function (address, desc) { + + desc.forEach(function (method) { + // workaround for invalid assumption that method.name is the full anonymous prototype of the method. + // it's not. it's just the name. the rest of the code assumes it's actually the anonymous + // prototype, so we make it so as a workaround. + if (method.name.indexOf('(') === -1) { + var displayName = method.name; + var typeName = method.inputs.map(function(i){return i.type; }).join(); + method.name = displayName + '(' + typeName + ')'; + } + }); + var inputParser = abi.inputParser(desc); var outputParser = abi.outputParser(desc); - var contract = {}; + var result = {}; + + result.call = function (options) { + result._isTransact = false; + result._options = options; + return result; + }; + + result.transact = function (options) { + result._isTransact = true; + result._options = options; + return result; + }; + + result._options = {}; + ['gas', 'gasPrice', 'value', 'from'].forEach(function(p) { + result[p] = function (v) { + result._options[p] = v; + return result; + }; + }); + desc.forEach(function (method) { - contract[method.name] = function () { + + var displayName = abi.methodDisplayName(method.name); + var typeName = abi.methodTypeName(method.name); + + var impl = 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); - } - }; + var signature = abi.methodSignature(method.name); + var parsed = inputParser[displayName][typeName].apply(null, params); + + var options = result._options || {}; + options.to = address; + options.data = signature + parsed; + + var isTransact = result._isTransact === true || (result._isTransact !== false && !method.constant); + var collapse = options.collapse !== false; + + // reset + result._options = {}; + result._isTransact = null; + + if (isTransact) { + // it's used byt natspec.js + // TODO: figure out better way to solve this + web3._currentContractAbi = desc; + web3._currentContractAddress = address; + web3._currentContractMethodName = method.name; + web3._currentContractMethodParams = params; + + // transactions do not have any output, cause we do not know, when they will be processed + web3.eth.transact(options); + return; + } + + var output = web3.eth.call(options); + var ret = outputParser[displayName][typeName](output); + if (collapse) + { + if (ret.length === 1) + ret = ret[0]; + else if (ret.length === 0) + ret = null; + } + return ret; }; + + if (result[displayName] === undefined) { + result[displayName] = impl; + } + + result[displayName][typeName] = impl; + }); - return contract; + return result; }; -if (typeof(module) !== "undefined") - module.exports = contract; +module.exports = contract; + |