From d99fea2db682c454581e1f9f60b2cea27d02c36e Mon Sep 17 00:00:00 2001
From: Marek Kotewicz <marek.kotewicz@gmail.com>
Date: Thu, 13 Nov 2014 04:21:51 +0100
Subject: [PATCH] abi output formatting

---
 dist/ethereum.js     |   2 +-
 dist/ethereum.js.map |   2 +-
 dist/ethereum.min.js |   2 +-
 example/index.html   |  53 ++++++++++------------
 lib/abi.js           | 102 +++++++++++++++++++++++++++++++++++++------
 5 files changed, 115 insertions(+), 46 deletions(-)

diff --git a/dist/ethereum.js b/dist/ethereum.js
index 8e7d5536bb..decf71e53e 100644
--- a/dist/ethereum.js
+++ b/dist/ethereum.js
@@ -1,5 +1,5 @@
 require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-var findIndex=function(array,callback){for(var end=!1,i=0;i<array.length&&!end;i++)end=callback(array[i]);return end?i-1:-1},padLeft=function(number,n){return new Array(2*n-number.toString().length+1).join("0")+number},setupTypes=function(){var prefixedType=function(prefix){return function(type,value){var padding,expected=prefix;return 0!==type.indexOf(expected)?!1:(padding=parseInt(type.slice(expected.length))/8,padLeft(value,padding))}},namedType=function(name,padding){return function(type,value){return type!==name?!1:padLeft(value,padding)}};return[prefixedType("uint"),prefixedType("int"),namedType("address",20),namedType("bool",1)]},types=setupTypes(),toBytes=function(json,methodName,params){var method,i,found,j,bytes="",index=findIndex(json,function(method){return method.name===methodName});if(-1!==index){for(bytes=bytes+index+"x0",method=json[index],i=0;i<method.inputs.length;i++){for(found=!1,j=0;j<types.length&&!found;j++)found=types[j](method.inputs[i].type,params[i]);found||console.error("unsupported json type: "+method.inputs[i].type),bytes+=found}return bytes}};module.exports={toBytes:toBytes};
+var findIndex=function(array,callback){for(var end=!1,i=0;i<array.length&&!end;i++)end=callback(array[i]);return end?i-1:-1},findMethodIndex=function(json,methodName){return findIndex(json,function(method){return method.name===methodName})},padLeft=function(number,n){return new Array(2*n-number.toString().length+1).join("0")+number},setupInputTypes=function(){var prefixedType=function(prefix){return function(type,value){var padding,expected=prefix;return 0!==type.indexOf(expected)?!1:(padding=parseInt(type.slice(expected.length))/8,padLeft(value,padding))}},namedType=function(name,padding,formatter){return function(type,value){return type!==name?!1:padLeft(formatter?value:formatter(value),padding)}},formatBool=function(value){return value?"1":"0"};return[prefixedType("uint"),prefixedType("int"),namedType("address",20),namedType("bool",1,formatBool)]},inputTypes=setupInputTypes(),toAbiInput=function(json,methodName,params){var method,i,found,j,bytes="",index=findMethodIndex(json,methodName);if(-1!==index){for(bytes=bytes+index+"x0",method=json[index],i=0;i<method.inputs.length;i++){for(found=!1,j=0;j<inputTypes.length&&!found;j++)found=inputTypes[j](method.inputs[i].type,params[i]);found||console.error("unsupported json type: "+method.inputs[i].type),bytes+=found}return bytes}},setupOutputTypes=function(){var prefixedType=function(prefix){return function(type){var padding,expected=prefix;return 0!==type.indexOf(expected)?-1:(padding=parseInt(type.slice(expected.length))/8,2*padding)}},namedType=function(name,padding){return function(type){return name===type?2*padding:-1}},formatInt=function(value){return parseInt(value,16)},formatBool=function(value){return"1"===value?!0:!1};return[{padding:prefixedType("uint"),format:formatInt},{padding:prefixedType("int"),format:formatInt},{padding:namedType("address",20)},{padding:namedType("bool",1),format:formatBool}]},outputTypes=setupOutputTypes(),fromAbiOutput=function(json,methodName,output){var result,method,i,padding,j,res,formatter,index=findMethodIndex(json,methodName);if(-1!==index){for(output=output.slice(2),result=[],method=json[index],i=0;i<method.outputs.length;i++){for(padding=-1,j=0;j<outputTypes.length&&-1===padding;j++)padding=outputTypes[j].padding(method.outputs[i].type);-1!==padding&&(res=output.slice(0,padding),formatter=outputTypes[j-1].format,result.push(formatter?formatter(res):res),output=output.slice(padding))}return result}};module.exports={toAbiInput:toAbiInput,fromAbiOutput:fromAbiOutput};
 },{}],2:[function(require,module,exports){
 var AutoProvider=function(userOptions){var options,self,closeWithSuccess,ws;if(!web3.haveProvider()){if(this.sendQueue=[],this.onmessageQueue=[],navigator.qt)return void(this.provider=new web3.providers.QtProvider);userOptions=userOptions||{},options={httprpc:userOptions.httprpc||"http://localhost:8080",websockets:userOptions.websockets||"ws://localhost:40404/eth"},self=this,closeWithSuccess=function(success){ws.close(),success?self.provider=new web3.providers.WebSocketProvider(options.websockets):(self.provider=new web3.providers.HttpRpcProvider(options.httprpc),self.poll=self.provider.poll.bind(self.provider)),self.sendQueue.forEach(function(payload){self.provider(payload)}),self.onmessageQueue.forEach(function(handler){self.provider.onmessage=handler})},ws=new WebSocket(options.websockets),ws.onopen=function(){closeWithSuccess(!0)},ws.onerror=function(){closeWithSuccess(!1)}}};AutoProvider.prototype.send=function(payload){return this.provider?void this.provider.send(payload):void this.sendQueue.push(payload)},Object.defineProperty(AutoProvider.prototype,"onmessage",{set:function(handler){return this.provider?void(this.provider.onmessage=handler):void this.onmessageQueue.push(handler)}}),module.exports=AutoProvider;
 },{}],3:[function(require,module,exports){
diff --git a/dist/ethereum.js.map b/dist/ethereum.js.map
index f9baa8d1a2..a6c1173567 100644
--- a/dist/ethereum.js.map
+++ b/dist/ethereum.js.map
@@ -16,7 +16,7 @@
   "sourceRoot": "",
   "sourcesContent": [
     "(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})",
-    "var findIndex=function(array,callback){for(var end=!1,i=0;i<array.length&&!end;i++)end=callback(array[i]);return end?i-1:-1},padLeft=function(number,n){return new Array(2*n-number.toString().length+1).join(\"0\")+number},setupTypes=function(){var prefixedType=function(prefix){return function(type,value){var padding,expected=prefix;return 0!==type.indexOf(expected)?!1:(padding=parseInt(type.slice(expected.length))/8,padLeft(value,padding))}},namedType=function(name,padding){return function(type,value){return type!==name?!1:padLeft(value,padding)}};return[prefixedType(\"uint\"),prefixedType(\"int\"),namedType(\"address\",20),namedType(\"bool\",1)]},types=setupTypes(),toBytes=function(json,methodName,params){var method,i,found,j,bytes=\"\",index=findIndex(json,function(method){return method.name===methodName});if(-1!==index){for(bytes=bytes+index+\"x0\",method=json[index],i=0;i<method.inputs.length;i++){for(found=!1,j=0;j<types.length&&!found;j++)found=types[j](method.inputs[i].type,params[i]);found||console.error(\"unsupported json type: \"+method.inputs[i].type),bytes+=found}return bytes}};module.exports={toBytes:toBytes};",
+    "var findIndex=function(array,callback){for(var end=!1,i=0;i<array.length&&!end;i++)end=callback(array[i]);return end?i-1:-1},findMethodIndex=function(json,methodName){return findIndex(json,function(method){return method.name===methodName})},padLeft=function(number,n){return new Array(2*n-number.toString().length+1).join(\"0\")+number},setupInputTypes=function(){var prefixedType=function(prefix){return function(type,value){var padding,expected=prefix;return 0!==type.indexOf(expected)?!1:(padding=parseInt(type.slice(expected.length))/8,padLeft(value,padding))}},namedType=function(name,padding,formatter){return function(type,value){return type!==name?!1:padLeft(formatter?value:formatter(value),padding)}},formatBool=function(value){return value?\"1\":\"0\"};return[prefixedType(\"uint\"),prefixedType(\"int\"),namedType(\"address\",20),namedType(\"bool\",1,formatBool)]},inputTypes=setupInputTypes(),toAbiInput=function(json,methodName,params){var method,i,found,j,bytes=\"\",index=findMethodIndex(json,methodName);if(-1!==index){for(bytes=bytes+index+\"x0\",method=json[index],i=0;i<method.inputs.length;i++){for(found=!1,j=0;j<inputTypes.length&&!found;j++)found=inputTypes[j](method.inputs[i].type,params[i]);found||console.error(\"unsupported json type: \"+method.inputs[i].type),bytes+=found}return bytes}},setupOutputTypes=function(){var prefixedType=function(prefix){return function(type){var padding,expected=prefix;return 0!==type.indexOf(expected)?-1:(padding=parseInt(type.slice(expected.length))/8,2*padding)}},namedType=function(name,padding){return function(type){return name===type?2*padding:-1}},formatInt=function(value){return parseInt(value,16)},formatBool=function(value){return\"1\"===value?!0:!1};return[{padding:prefixedType(\"uint\"),format:formatInt},{padding:prefixedType(\"int\"),format:formatInt},{padding:namedType(\"address\",20)},{padding:namedType(\"bool\",1),format:formatBool}]},outputTypes=setupOutputTypes(),fromAbiOutput=function(json,methodName,output){var result,method,i,padding,j,res,formatter,index=findMethodIndex(json,methodName);if(-1!==index){for(output=output.slice(2),result=[],method=json[index],i=0;i<method.outputs.length;i++){for(padding=-1,j=0;j<outputTypes.length&&-1===padding;j++)padding=outputTypes[j].padding(method.outputs[i].type);-1!==padding&&(res=output.slice(0,padding),formatter=outputTypes[j-1].format,result.push(formatter?formatter(res):res),output=output.slice(padding))}return result}};module.exports={toAbiInput:toAbiInput,fromAbiOutput:fromAbiOutput};",
     "var AutoProvider=function(userOptions){var options,self,closeWithSuccess,ws;if(!web3.haveProvider()){if(this.sendQueue=[],this.onmessageQueue=[],navigator.qt)return void(this.provider=new web3.providers.QtProvider);userOptions=userOptions||{},options={httprpc:userOptions.httprpc||\"http://localhost:8080\",websockets:userOptions.websockets||\"ws://localhost:40404/eth\"},self=this,closeWithSuccess=function(success){ws.close(),success?self.provider=new web3.providers.WebSocketProvider(options.websockets):(self.provider=new web3.providers.HttpRpcProvider(options.httprpc),self.poll=self.provider.poll.bind(self.provider)),self.sendQueue.forEach(function(payload){self.provider(payload)}),self.onmessageQueue.forEach(function(handler){self.provider.onmessage=handler})},ws=new WebSocket(options.websockets),ws.onopen=function(){closeWithSuccess(!0)},ws.onerror=function(){closeWithSuccess(!1)}}};AutoProvider.prototype.send=function(payload){return this.provider?void this.provider.send(payload):void this.sendQueue.push(payload)},Object.defineProperty(AutoProvider.prototype,\"onmessage\",{set:function(handler){return this.provider?void(this.provider.onmessage=handler):void this.onmessageQueue.push(handler)}}),module.exports=AutoProvider;",
     "function formatJsonRpcObject(object){return{jsonrpc:\"2.0\",method:object.call,params:object.args,id:object._id}}function formatJsonRpcMessage(message){var object=JSON.parse(message);return{_id:object.id,data:object.result,error:object.error}}var HttpRpcProvider=function(host){this.handlers=[],this.host=host};HttpRpcProvider.prototype.sendRequest=function(payload,cb){var data=formatJsonRpcObject(payload),request=new XMLHttpRequest;request.open(\"POST\",this.host,!0),request.send(JSON.stringify(data)),request.onreadystatechange=function(){4===request.readyState&&cb&&cb(request)}},HttpRpcProvider.prototype.send=function(payload){var self=this;this.sendRequest(payload,function(request){self.handlers.forEach(function(handler){handler.call(self,formatJsonRpcMessage(request.responseText))})})},HttpRpcProvider.prototype.poll=function(payload,id){var self=this;this.sendRequest(payload,function(request){var parsed=JSON.parse(request.responseText);!parsed.error&&(parsed.result instanceof Array?0!==parsed.result.length:parsed.result)&&self.handlers.forEach(function(handler){handler.call(self,{_event:payload.call,_id:id,data:parsed.result})})})},Object.defineProperty(HttpRpcProvider.prototype,\"onmessage\",{set:function(handler){this.handlers.push(handler)}}),module.exports=HttpRpcProvider;",
     "function flattenPromise(obj){return obj instanceof Promise?Promise.resolve(obj):obj instanceof Array?new Promise(function(resolve){var promises=obj.map(function(o){return flattenPromise(o)});return Promise.all(promises).then(function(res){for(var i=0;i<obj.length;i++)obj[i]=res[i];resolve(obj)})}):obj instanceof Object?new Promise(function(resolve){var keys=Object.keys(obj),promises=keys.map(function(key){return flattenPromise(obj[key])});return Promise.all(promises).then(function(res){for(var i=0;i<keys.length;i++)obj[keys[i]]=res[i];resolve(obj)})}):Promise.resolve(obj)}function messageHandler(data){if(void 0!==data._event)return void web3.trigger(data._event,data._id,data.data);if(data._id){var cb=web3._callbacks[data._id];cb&&(cb.call(this,data.error,data.data),delete web3._callbacks[data._id])}}var ethWatch,shhWatch,ProviderManager,Filter,ethMethods=function(){var blockCall=function(args){return\"string\"==typeof args[0]?\"eth_blockByHash\":\"eth_blockByNumber\"},transactionCall=function(args){return\"string\"==typeof args[0]?\"eth_transactionByHash\":\"eth_transactionByNumber\"},uncleCall=function(args){return\"string\"==typeof args[0]?\"eth_uncleByHash\":\"eth_uncleByNumber\"},methods=[{name:\"balanceAt\",call:\"eth_balanceAt\"},{name:\"stateAt\",call:\"eth_stateAt\"},{name:\"countAt\",call:\"eth_countAt\"},{name:\"codeAt\",call:\"eth_codeAt\"},{name:\"transact\",call:\"eth_transact\"},{name:\"call\",call:\"eth_call\"},{name:\"block\",call:blockCall},{name:\"transaction\",call:transactionCall},{name:\"uncle\",call:uncleCall},{name:\"compilers\",call:\"eth_compilers\"},{name:\"lll\",call:\"eth_lll\"},{name:\"solidity\",call:\"eth_solidity\"},{name:\"contractCreate\",call:\"eth_contractCreate\"},{name:\"contractCall\",call:\"eth_contractCall\"}];return methods},ethProperties=function(){return[{name:\"coinbase\",getter:\"eth_coinbase\",setter:\"eth_setCoinbase\"},{name:\"listening\",getter:\"eth_listening\",setter:\"eth_setListening\"},{name:\"mining\",getter:\"eth_mining\",setter:\"eth_setMining\"},{name:\"gasPrice\",getter:\"eth_gasPrice\"},{name:\"account\",getter:\"eth_account\"},{name:\"accounts\",getter:\"eth_accounts\"},{name:\"peerCount\",getter:\"eth_peerCount\"},{name:\"defaultBlock\",getter:\"eth_defaultBlock\",setter:\"eth_setDefaultBlock\"},{name:\"number\",getter:\"eth_number\"}]},dbMethods=function(){return[{name:\"put\",call:\"db_put\"},{name:\"get\",call:\"db_get\"},{name:\"putString\",call:\"db_putString\"},{name:\"getString\",call:\"db_getString\"}]},shhMethods=function(){return[{name:\"post\",call:\"shh_post\"},{name:\"newIdentity\",call:\"shh_newIdentity\"},{name:\"haveIdentity\",call:\"shh_haveIdentity\"},{name:\"newGroup\",call:\"shh_newGroup\"},{name:\"addToGroup\",call:\"shh_addToGroup\"}]},ethWatchMethods=function(){var newFilter=function(args){return\"string\"==typeof args[0]?\"eth_newFilterString\":\"eth_newFilter\"};return[{name:\"newFilter\",call:newFilter},{name:\"uninstallFilter\",call:\"eth_uninstallFilter\"},{name:\"getMessages\",call:\"eth_getMessages\"}]},shhWatchMethods=function(){return[{name:\"newFilter\",call:\"shh_newFilter\"},{name:\"uninstallFilter\",call:\"shh_uninstallFilter\"},{name:\"getMessage\",call:\"shh_getMessages\"}]},setupMethods=function(obj,methods){methods.forEach(function(method){obj[method.name]=function(){return flattenPromise(Array.prototype.slice.call(arguments)).then(function(args){var call=\"function\"==typeof method.call?method.call(args):method.call;return{call:call,args:args}}).then(function(request){return new Promise(function(resolve,reject){web3.provider.send(request,function(err,result){return err?void reject(err):void resolve(result)})})}).catch(function(err){console.error(err)})}})},setupProperties=function(obj,properties){properties.forEach(function(property){var proto={};proto.get=function(){return new Promise(function(resolve,reject){web3.provider.send({call:property.getter},function(err,result){return err?void reject(err):void resolve(result)})})},property.setter&&(proto.set=function(val){return flattenPromise([val]).then(function(args){return new Promise(function(resolve){web3.provider.send({call:property.setter,args:args},function(err,result){return err?void reject(err):void resolve(result)})})}).catch(function(err){console.error(err)})}),Object.defineProperty(obj,property.name,proto)})},web3={_callbacks:{},_events:{},providers:{},toHex:function(str){var i,n,hex=\"\";for(i=0;i<str.length;i++)n=str.charCodeAt(i).toString(16),hex+=n.length<2?\"0\"+n:n;return hex},toAscii:function(hex){var code,str=\"\",i=0,l=hex.length;for(\"0x\"===hex.substring(0,2)&&(i=2);l>i&&(code=hex.charCodeAt(i),0!==code);i+=2)str+=String.fromCharCode(parseInt(hex.substr(i,2),16));return str},toDecimal:function(val){return parseInt(val,16)},fromAscii:function(str,pad){pad=void 0===pad?32:pad;for(var hex=this.toHex(str);hex.length<2*pad;)hex+=\"00\";return\"0x\"+hex},eth:{prototype:Object(),watch:function(params){return new Filter(params,ethWatch)}},db:{prototype:Object()},shh:{prototype:Object(),watch:function(params){return new Filter(params,shhWatch)}},on:function(event,id,cb){return void 0===web3._events[event]&&(web3._events[event]={}),web3._events[event][id]=cb,this},off:function(event,id){return void 0!==web3._events[event]&&delete web3._events[event][id],this},trigger:function(event,id,data){var cb,callbacks=web3._events[event];callbacks&&callbacks[id]&&(cb=callbacks[id])(data)}},eth=web3.eth;setupMethods(eth,ethMethods()),setupProperties(eth,ethProperties()),setupMethods(web3.db,dbMethods()),setupMethods(web3.shh,shhMethods()),ethWatch={changed:\"eth_changed\"},setupMethods(ethWatch,ethWatchMethods()),shhWatch={changed:\"shh_changed\"},setupMethods(shhWatch,shhWatchMethods()),ProviderManager=function(){var self,poll;this.queued=[],this.polls=[],this.ready=!1,this.provider=void 0,this.id=1,self=this,(poll=function(){self.provider&&self.provider.poll&&self.polls.forEach(function(data){data.data._id=self.id,self.id++,self.provider.poll(data.data,data.id)}),setTimeout(poll,12e3)})()},ProviderManager.prototype.send=function(data,cb){data._id=this.id,cb&&(web3._callbacks[data._id]=cb),data.args=data.args||[],this.id++,void 0!==this.provider?this.provider.send(data):(console.warn(\"provider is not set\"),this.queued.push(data))},ProviderManager.prototype.set=function(provider){void 0!==this.provider&&void 0!==this.provider.unload&&this.provider.unload(),this.provider=provider,this.ready=!0},ProviderManager.prototype.sendQueued=function(){for(var i=0;this.queued.length;i++)this.send(this.queued[i])},ProviderManager.prototype.installed=function(){return void 0!==this.provider},ProviderManager.prototype.startPolling=function(data,pollId){this.provider&&this.provider.poll&&this.polls.push({data:data,id:pollId})},ProviderManager.prototype.stopPolling=function(pollId){var i,poll;for(i=this.polls.length;i--;)poll=this.polls[i],poll.id===pollId&&this.polls.splice(i,1)},web3.provider=new ProviderManager,web3.setProvider=function(provider){provider.onmessage=messageHandler,web3.provider.set(provider),web3.provider.sendQueued()},web3.haveProvider=function(){return!!web3.provider.provider},Filter=function(options,impl){this.impl=impl,this.callbacks=[];var self=this;this.promise=impl.newFilter(options),this.promise.then(function(id){self.id=id,web3.on(impl.changed,id,self.trigger.bind(self)),web3.provider.startPolling({call:impl.changed,args:[id]},id)})},Filter.prototype.arrived=function(callback){this.changed(callback)},Filter.prototype.changed=function(callback){var self=this;this.promise.then(function(id){self.callbacks.push(callback)})},Filter.prototype.trigger=function(messages){for(var i=0;i<this.callbacks.length;i++)this.callbacks[i].call(this,messages)},Filter.prototype.uninstall=function(){var self=this;this.promise.then(function(id){self.impl.uninstallFilter(id),web3.provider.stopPolling(id),web3.off(impl.changed,id)})},Filter.prototype.messages=function(){var self=this;return this.promise.then(function(id){return self.impl.getMessages(id)})},module.exports=web3;",
diff --git a/dist/ethereum.min.js b/dist/ethereum.min.js
index 9f49a01317..426de14e80 100644
--- a/dist/ethereum.min.js
+++ b/dist/ethereum.min.js
@@ -1 +1 @@
-require=function e(t,n,r){function o(s,a){if(!n[s]){if(!t[s]){var c="function"==typeof require&&require;if(!a&&c)return c(s,!0);if(i)return i(s,!0);var u=new Error("Cannot find module '"+s+"'");throw u.code="MODULE_NOT_FOUND",u}var l=n[s]={exports:{}};t[s][0].call(l.exports,function(e){var n=t[s][1][e];return o(n?n:e)},l,l.exports,e,t,n,r)}return n[s].exports}for(var i="function"==typeof require&&require,s=0;s<r.length;s++)o(r[s]);return o}({1:[function(e,t){var n=function(e,t){for(var n=!1,r=0;r<e.length&&!n;r++)n=t(e[r]);return n?r-1:-1},r=function(e,t){return new Array(2*t-e.toString().length+1).join("0")+e},o=function(){var e=function(e){return function(t,n){var o,i=e;return 0!==t.indexOf(i)?!1:(o=parseInt(t.slice(i.length))/8,r(n,o))}},t=function(e,t){return function(n,o){return n!==e?!1:r(o,t)}};return[e("uint"),e("int"),t("address",20),t("bool",1)]},i=o(),s=function(e,t,r){var o,s,a,c,u="",l=n(e,function(e){return e.name===t});if(-1!==l){for(u=u+l+"x0",o=e[l],s=0;s<o.inputs.length;s++){for(a=!1,c=0;c<i.length&&!a;c++)a=i[c](o.inputs[s].type,r[s]);a||console.error("unsupported json type: "+o.inputs[s].type),u+=a}return u}};t.exports={toBytes:s}},{}],2:[function(e,t){var n=function(e){var t,n,r,o;if(!web3.haveProvider()){if(this.sendQueue=[],this.onmessageQueue=[],navigator.qt)return void(this.provider=new web3.providers.QtProvider);e=e||{},t={httprpc:e.httprpc||"http://localhost:8080",websockets:e.websockets||"ws://localhost:40404/eth"},n=this,r=function(e){o.close(),e?n.provider=new web3.providers.WebSocketProvider(t.websockets):(n.provider=new web3.providers.HttpRpcProvider(t.httprpc),n.poll=n.provider.poll.bind(n.provider)),n.sendQueue.forEach(function(e){n.provider(e)}),n.onmessageQueue.forEach(function(e){n.provider.onmessage=e})},o=new WebSocket(t.websockets),o.onopen=function(){r(!0)},o.onerror=function(){r(!1)}}};n.prototype.send=function(e){return this.provider?void 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Promise(function(n){g.provider.send({call:t.setter,args:e},function(e,t){return e?void reject(e):void n(t)})})}).catch(function(e){console.error(e)})}),Object.defineProperty(e,t.name,r)})},g={_callbacks:{},_events:{},providers:{},toHex:function(e){var t,n,r="";for(t=0;t<e.length;t++)n=e.charCodeAt(t).toString(16),r+=n.length<2?"0"+n:n;return r},toAscii:function(e){var t,n="",r=0,o=e.length;for("0x"===e.substring(0,2)&&(r=2);o>r&&(t=e.charCodeAt(r),0!==t);r+=2)n+=String.fromCharCode(parseInt(e.substr(r,2),16));return n},toDecimal:function(e){return parseInt(e,16)},fromAscii:function(e,t){t=void 0===t?32:t;for(var n=this.toHex(e);n.length<2*t;)n+="00";return"0x"+n},eth:{prototype:Object(),watch:function(e){return new a(e,o)}},db:{prototype:Object()},shh:{prototype:Object(),watch:function(e){return new a(e,i)}},on:function(e,t,n){return void 0===g._events[e]&&(g._events[e]={}),g._events[e][t]=n,this},off:function(e,t){return void 0!==g._events[e]&&delete g._events[e][t],this},trigger:function(e,t,n){var r,o=g._events[e];o&&o[t]&&(r=o[t])(n)}},m=g.eth;f(m,c()),v(m,u()),f(g.db,l()),f(g.shh,h()),o={changed:"eth_changed"},f(o,d()),i={changed:"shh_changed"},f(i,p()),s=function(){var e,t;this.queued=[],this.polls=[],this.ready=!1,this.provider=void 0,this.id=1,e=this,(t=function(){e.provider&&e.provider.poll&&e.polls.forEach(function(t){t.data._id=e.id,e.id++,e.provider.poll(t.data,t.id)}),setTimeout(t,12e3)})()},s.prototype.send=function(e,t){e._id=this.id,t&&(g._callbacks[e._id]=t),e.args=e.args||[],this.id++,void 0!==this.provider?this.provider.send(e):(console.warn("provider is not set"),this.queued.push(e))},s.prototype.set=function(e){void 0!==this.provider&&void 0!==this.provider.unload&&this.provider.unload(),this.provider=e,this.ready=!0},s.prototype.sendQueued=function(){for(var e=0;this.queued.length;e++)this.send(this.queued[e])},s.prototype.installed=function(){return void 0!==this.provider},s.prototype.startPolling=function(e,t){this.provider&&this.provider.poll&&this.polls.push({data:e,id:t})},s.prototype.stopPolling=function(e){var t,n;for(t=this.polls.length;t--;)n=this.polls[t],n.id===e&&this.polls.splice(t,1)},g.provider=new s,g.setProvider=function(e){e.onmessage=r,g.provider.set(e),g.provider.sendQueued()},g.haveProvider=function(){return!!g.provider.provider},a=function(e,t){this.impl=t,this.callbacks=[];var n=this;this.promise=t.newFilter(e),this.promise.then(function(e){n.id=e,g.on(t.changed,e,n.trigger.bind(n)),g.provider.startPolling({call:t.changed,args:[e]},e)})},a.prototype.arrived=function(e){this.changed(e)},a.prototype.changed=function(e){var t=this;this.promise.then(function(){t.callbacks.push(e)})},a.prototype.trigger=function(e){for(var t=0;t<this.callbacks.length;t++)this.callbacks[t].call(this,e)},a.prototype.uninstall=function(){var e=this;this.promise.then(function(t){e.impl.uninstallFilter(t),g.provider.stopPolling(t),g.off(impl.changed,t)})},a.prototype.messages=function(){var e=this;return this.promise.then(function(t){return e.impl.getMessages(t)})},t.exports=g},{}],5:[function(e,t){var n=function(){this.handlers=[];var e=this;navigator.qt.onmessage=function(t){e.handlers.forEach(function(n){n.call(e,JSON.parse(t.data))})}};n.prototype.send=function(e){navigator.qt.postMessage(JSON.stringify(e))},Object.defineProperty(n.prototype,"onmessage",{set:function(e){this.handlers.push(e)}}),t.exports=n},{}],6:[function(e,t){var n=function(e){this.handlers=[],this.queued=[],this.ready=!1,this.ws=new WebSocket(e);var t=this;this.ws.onmessage=function(e){for(var n=0;n<t.handlers.length;n++)t.handlers[n].call(t,JSON.parse(e.data),e)},this.ws.onopen=function(){t.ready=!0;for(var e=0;e<t.queued.length;e++)t.send(t.queued[e])}};n.prototype.send=function(e){if(this.ready){var t=JSON.stringify(e);this.ws.send(t)}else this.queued.push(e)},n.prototype.onMessage=function(e){this.handlers.push(e)},n.prototype.unload=function(){this.ws.close()},Object.defineProperty(n.prototype,"onmessage",{set:function(e){this.onMessage(e)}}),t.exports=n},{}],web3:[function(e,t){var n=e("./lib/main");n.providers.WebSocketProvider=e("./lib/websocket"),n.providers.HttpRpcProvider=e("./lib/httprpc"),n.providers.QtProvider=e("./lib/qt"),n.providers.AutoProvider=e("./lib/autoprovider"),n.abi=e("./lib/abi"),t.exports=n},{"./lib/abi":1,"./lib/autoprovider":2,"./lib/httprpc":3,"./lib/main":4,"./lib/qt":5,"./lib/websocket":6}]},{},[]);
\ No newline at end of file
diff --git a/example/index.html b/example/index.html
index 17694cbf61..dc507ec9c8 100644
--- a/example/index.html
+++ b/example/index.html
@@ -6,39 +6,32 @@
 <script type="text/javascript" src="../dist/ethereum.js"></script>
 
 <script type="text/javascript">
-if (window.Promise === undefined) {
-    window.Promise = ES6Promise.Promise;
-}
-
-var web3 = require('web3');
-
-//web3.setProvider(new web3.providers.QtProvider());
-//web3.setProvider(new web3.providers.HttpRpcProvider("http://localhost:8080"));
-// web3.setProvider(new web3.providers.WebSocketProvider("ws://localhost:40404/eth"));
-web3.setProvider(new web3.providers.AutoProvider());
-
-function testSnippet() {
-    web3.eth.watch({altered: web3.eth.coinbase}).changed(function() {
-        web3.eth.balanceAt(web3.eth.coinbase).then(function (balance) {
-        	console.log(parseInt(balance,16));
-        	console.log(typeof balance);
-            document.getElementById("result").innerText = +balance;
+    if (window.Promise === undefined) {
+        window.Promise = ES6Promise.Promise;
+    }
+
+    var web3 = require('web3');
+    web3.setProvider(new web3.providers.AutoProvider());
+
+    function testSnippet() {
+        web3.eth.watch({altered: web3.eth.coinbase}).changed(function() {
+            web3.eth.balanceAt(web3.eth.coinbase).then(function (balance) {
+                console.log(parseInt(balance,16));
+                console.log(typeof balance);
+                document.getElementById("result").innerText = +balance;
+            });
         });
-    });
-}
-
-</script>
+    }
+    </script>
 </head>
 
 <body>
-
-<h1>std::name_reg</h1>
-<input type="text" id="name"></input>
-<button type="button" onClick="testSnippet();">test snippet</button>
-
-<div></div>
-result: <div id="result"></div>
-
+    <h1>std::name_reg</h1>
+    <input type="text" id="name"></input>
+    <button type="button" onClick="testSnippet();">test snippet</button>
+    <div></div>
+    result: 
+    <div id="result"></div>
 </body>
-
 </html>
+
diff --git a/lib/abi.js b/lib/abi.js
index 9102454b06..0ac27e6b8a 100644
--- a/lib/abi.js
+++ b/lib/abi.js
@@ -8,11 +8,17 @@ var findIndex = function (array, callback) {
     return end ? i - 1 : -1;
 };
 
+var findMethodIndex = function (json, methodName) {
+    return findIndex(json, function (method) {
+        return method.name === methodName;
+    });
+};
+
 var padLeft = function (number, n) {
     return (new Array(n * 2 - number.toString().length + 1)).join("0") + number;
 };
 
-var setupTypes = function () {
+var setupInputTypes = function () {
     var prefixedType = function (prefix) {
         return function (type, value) {
             var expected = prefix;
@@ -25,32 +31,34 @@ var setupTypes = function () {
         };
     };
 
-    var namedType = function (name, padding) {
+    var namedType = function (name, padding, formatter) {
         return function (type, value) {
             if (type !== name) {
                 return false; 
             }
 
-            return padLeft(value, padding);
+            return padLeft(formatter ? value : formatter(value), padding);
         };
     };
 
+    var formatBool = function (value) {
+        return value ? '1' : '0';
+    };
+
     return [
         prefixedType('uint'),
         prefixedType('int'),
         namedType('address', 20),
-        namedType('bool', 1),
+        namedType('bool', 1, formatBool),
     ];
 };
 
-var types = setupTypes();
+var inputTypes = setupInputTypes();
 
-var toBytes = function (json, methodName, params) {
+var toAbiInput = function (json, methodName, params) {
     var bytes = "";
-    var index = findIndex(json, function (method) {
-        return method.name === methodName;
-    });
-
+    var index = findMethodIndex(json, methodName);
+    
     if (index === -1) {
         return;
     }
@@ -62,8 +70,8 @@ var toBytes = function (json, methodName, params) {
     
     for (var i = 0; i < method.inputs.length; i++) {
         var found = false;
-        for (var j = 0; j < types.length && !found; j++) {
-            found = types[j](method.inputs[i].type, params[i]);
+        for (var j = 0; j < inputTypes.length && !found; j++) {
+            found = inputTypes[j](method.inputs[i].type, params[i]);
         }
         if (!found) {
             console.error('unsupported json type: ' + method.inputs[i].type);
@@ -73,7 +81,75 @@ var toBytes = function (json, methodName, params) {
     return bytes;
 };
 
+var setupOutputTypes = function () {
+    var prefixedType = function (prefix) {
+        return function (type) {
+            var expected = prefix;
+            if (type.indexOf(expected) !== 0) {
+                return -1;
+            }
+            
+            var padding = parseInt(type.slice(expected.length)) / 8;
+            return padding * 2;
+        };
+    };
+
+    var namedType = function (name, padding) {
+        return function (type) {
+            return name === type ? padding * 2: -1;
+        };
+    };
+
+    var formatInt = function (value) {
+        return parseInt(value, 16);
+    };
+
+    var formatBool = function (value) {
+        return value === '1' ? true : false;
+    };
+
+    return [
+    { padding: prefixedType('uint'), format: formatInt },
+    { padding: prefixedType('int'), format: formatInt },
+    { padding: namedType('address', 20) },
+    { padding: namedType('bool', 1), format: formatBool }
+    ];
+};
+
+var outputTypes = setupOutputTypes();
+
+var fromAbiOutput = function (json, methodName, output) {
+    var index = findMethodIndex(json, methodName);
+
+    if (index === -1) {
+        return;
+    }
+    
+    output = output.slice(2);
+
+    var result = [];
+    var method = json[index];
+    for (var i = 0; i < method.outputs.length; i++) {
+        var padding = -1;
+        for (var j = 0; j < outputTypes.length && padding === -1; j++) {
+            padding = outputTypes[j].padding(method.outputs[i].type);
+        }
+
+        if (padding === -1) {
+            // not found output parsing
+            continue;
+        }
+        var res = output.slice(0, padding);
+        var formatter = outputTypes[j - 1].format;
+        result.push(formatter ? formatter(res): res);
+        output = output.slice(padding);
+    }
+
+    return result;
+};
+
 module.exports = {
-    toBytes: toBytes
+    toAbiInput: toAbiInput,
+    fromAbiOutput: fromAbiOutput
 };