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 | 209 |
1 files changed, 180 insertions, 29 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..a0525bd9d 100644 --- a/cmd/mist/assets/ext/ethereum.js/lib/contract.js +++ b/cmd/mist/assets/ext/ethereum.js/lib/contract.js @@ -20,47 +20,198 @@ * @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'); var abi = require('./abi'); +var utils = require('./utils'); +var eventImpl = require('./event'); -var contract = function (address, desc) { +var exportNatspecGlobals = function (vars) { + // it's used byt natspec.js + // TODO: figure out better way to solve this + web3._currentContractAbi = vars.abi; + web3._currentContractAddress = vars.address; + web3._currentContractMethodName = vars.method; + web3._currentContractMethodParams = vars.params; +}; + +var addFunctionRelatedPropertiesToContract = function (contract) { + + contract.call = function (options) { + contract._isTransact = false; + contract._options = options; + return contract; + }; + + contract.transact = function (options) { + contract._isTransact = true; + contract._options = options; + return contract; + }; + + contract._options = {}; + ['gas', 'gasPrice', 'value', 'from'].forEach(function(p) { + contract[p] = function (v) { + contract._options[p] = v; + return contract; + }; + }); + +}; + +var addFunctionsToContract = function (contract, desc, address) { var inputParser = abi.inputParser(desc); var outputParser = abi.outputParser(desc); - var contract = {}; + // create contract functions + utils.filterFunctions(desc).forEach(function (method) { - desc.forEach(function (method) { - contract[method.name] = function () { + var displayName = utils.extractDisplayName(method.name); + var typeName = utils.extractTypeName(method.name); + + var impl = function () { var params = Array.prototype.slice.call(arguments); - var parsed = inputParser[method.name].apply(null, params); + var signature = abi.signatureFromAscii(method.name); + var parsed = inputParser[displayName][typeName].apply(null, params); - var onSuccess = function (result) { - return outputParser[method.name](result); - }; + var options = contract._options || {}; + options.to = address; + options.data = signature + parsed; + + var isTransact = contract._isTransact === true || (contract._isTransact !== false && !method.constant); + var collapse = options.collapse !== false; + + // reset + contract._options = {}; + contract._isTransact = null; + + if (isTransact) { + + exportNatspecGlobals({ + abi: desc, + address: address, + method: method.name, + params: 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 (contract[displayName] === undefined) { + contract[displayName] = impl; + } + + contract[displayName][typeName] = impl; + }); +}; - 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 addEventRelatedPropertiesToContract = function (contract, desc, address) { + contract.address = address; + contract._onWatchEventResult = function (data) { + var matchingEvent = event.getMatchingEvent(utils.filterEvents(desc)); + var parser = eventImpl.outputParser(matchingEvent); + return parser(data); + }; + + Object.defineProperty(contract, 'topic', { + get: function() { + return utils.filterEvents(desc).map(function (e) { + return abi.eventSignatureFromAscii(e.name); + }); + } + }); + +}; + +var addEventsToContract = function (contract, desc, address) { + // create contract events + utils.filterEvents(desc).forEach(function (e) { + + var impl = function () { + var params = Array.prototype.slice.call(arguments); + var signature = abi.eventSignatureFromAscii(e.name); + var event = eventImpl.inputParser(address, signature, e); + var o = event.apply(null, params); + o._onWatchEventResult = function (data) { + var parser = eventImpl.outputParser(e); + return parser(data); }; + return web3.eth.watch(o); }; + + // this property should be used by eth.filter to check if object is an event + impl._isEvent = true; + + var displayName = utils.extractDisplayName(e.name); + var typeName = utils.extractTypeName(e.name); + + if (contract[displayName] === undefined) { + contract[displayName] = impl; + } + + contract[displayName][typeName] = impl; + }); +}; - return contract; + +/** + * 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) { + + // 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. + // TODO: we may not want to modify input params, maybe use copy instead? + desc.forEach(function (method) { + 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 result = {}; + addFunctionRelatedPropertiesToContract(result); + addFunctionsToContract(result, desc, address); + addEventRelatedPropertiesToContract(result, desc, address); + addEventsToContract(result, desc, address); + + return result; }; -if (typeof(module) !== "undefined") - module.exports = contract; +module.exports = contract; + |