Filtering

4 files changed, 950 insertions, 475 deletions

diff --git a/cmd/mist/assets/examples/abi.html b/cmd/mist/assets/examples/abi.html
index 8d172482c..8170e88b0 100644
--- a/cmd/mist/assets/examples/abi.html
+++ b/cmd/mist/assets/examples/abi.html
@@ -21,7 +21,7 @@
 	}];
 	var address = web3.eth.transact({
 		data: "0x603880600c6000396000f3006001600060e060020a600035048063c6888fa114601857005b6021600435602b565b8060005260206000f35b600081600702905091905056",
-		gasprice: "1000000000000000",
+		gasPrice: "1000000000000000",
 		gas: "10000",
 	});
 	var contract = web3.eth.contract(address, desc);
diff --git a/cmd/mist/assets/examples/coin.html b/cmd/mist/assets/examples/coin.html
index edeabe5e8..070ac94a6 100644
--- a/cmd/mist/assets/examples/coin.html
+++ b/cmd/mist/assets/examples/coin.html
@@ -32,17 +32,19 @@
 	web3.setProvider(new web3.providers.HttpSyncProvider('http://localhost:8080'));
 	var desc =  [{
 		"name": "balance(address)",
+		"type": "function",
 		"inputs": [{
 			"name": "who",
 			"type": "address"
 		}],
-		"const": true,
+		"constant": true,
 		"outputs": [{
 			"name": "value",
 			"type": "uint256"
 		}]
 	}, {
 		"name": "send(address,uint256)",
+		"type": "function",
 		"inputs": [{
 			"name": "to",
 			"type": "address"
@@ -51,21 +53,31 @@
 			"type": "uint256"
 		}],
 		"outputs": []
+	}, {
+		"name":"Changed",
+		"type":"event",
+		"inputs": [
+			{"name":"to","type":"address","indexed":false},
+			{"name":"amount","type":"uint256","indexed":true},
+		],
 	}];
 
-    var address = web3.db.get("jevcoin", "address");
+    var address = "";//web3.db.get("jevcoin", "address");
     if( address.length == 0 ) {
-        var code = "0x60056011565b60ae8060356000396000f35b64174876e800600033600160a060020a031660005260205260406000208190555056006001600060e060020a600035048063d0679d34146022578063e3d670d714603457005b602e6004356024356047565b60006000f35b603d600435608d565b8060005260206000f35b80600083600160a060020a0316600052602052604060002090815401908190555080600033600160a060020a031660005260205260406000209081540390819055505050565b6000600082600160a060020a0316600052602052604060002054905091905056";
+        var code = "0x60056011565b60b88060356000396000f35b64e8d4a51000600033600160a060020a0316600052602052604060002081905550560060e060020a6000350480637bb98a68146028578063d0679d34146034578063e3d670d714604657005b602e60b3565b60006000f35b60406004356024356059565b60006000f35b604f6004356091565b8060005260206000f35b8060005281600160a060020a03167fb52dda022b6c1a1f40905a85f257f689aa5d69d850e49cf939d688fbe5af594660206000a25050565b6000600082600160a060020a03166000526020526040600020549050919050565b5b60008156";
         address = web3.eth.transact({
             data: code,
-            gasprice: "1000000000000000",
+            gasPrice: "1000000000000000",
             gas: "10000",
         });
         web3.db.put("jevcoin", "address", address);
     }
 
 	var contract = web3.eth.contract(address, desc);
-
+	contract.Changed({to: "0xaabb"}).changed(function(e) {
+		console.log("e: " + JSON.stringify(e));
+	});
+	contract.transact({gas: "10000", gasprice: eth.gasPrice}).send( "0xaa", 10000 );
 	function reflesh() {
         document.querySelector("#balance").innerHTML = contract.call().balance(eth.coinbase);
 
diff --git a/cmd/mist/assets/examples/info.html b/cmd/mist/assets/examples/info.html
index c4df8ea64..daad8c706 100644
--- a/cmd/mist/assets/examples/info.html
+++ b/cmd/mist/assets/examples/info.html
@@ -31,6 +31,10 @@
 		</tr>
 
 		<tr>
+			<td>Balance</td>
+			<td id="balance"></td>
+
+		<tr>
 			<td>Gas price</td>
 			<td id="gas_price"></td>
 		</tr>
@@ -63,6 +67,7 @@
     document.querySelector("#peer_count").innerHTML = eth.peerCount;
     document.querySelector("#default_block").innerHTML = eth.defaultBlock;
     document.querySelector("#accounts").innerHTML = eth.accounts;
+    document.querySelector("#balance").innerHTML = web3.toEth(eth.balanceAt(eth.accounts[0]));
     document.querySelector("#gas_price").innerHTML = eth.gasPrice;
     document.querySelector("#mining").innerHTML = eth.mining;
     document.querySelector("#listening").innerHTML = eth.listening;
diff --git a/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js b/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
index 6e6c5020c..2ecee387d 100644
--- a/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
+++ b/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
@@ -22,175 +22,57 @@ require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof requ
  * @date 2014
  */
 
-// TODO: is these line is supposed to be here? 
-if ("build" !== 'build') {/*
-    var BigNumber = require('bignumber.js'); // jshint ignore:line
-*/}
-
-var web3 = require('./web3'); // jshint ignore:line
-
-BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
-
-var ETH_PADDING = 32;
-
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
-
-/// Finds first index of array element matching pattern
-/// @param array
-/// @param callback pattern
-/// @returns index of element
-var findIndex = function (array, callback) {
-    var end = false;
-    var i = 0;
-    for (; i < array.length && !end; i++) {
-        end = callback(array[i]);
-    }
-    return end ? i - 1 : -1;
-};
-
-/// @returns a function that is used as a pattern for 'findIndex'
-var findMethodIndex = function (json, methodName) {
-    return findIndex(json, function (method) {
-        return method.name === methodName;
-    });
-};
-
-/// @returns method with given method name
-var getMethodWithName = function (json, methodName) {
-    var index = findMethodIndex(json, methodName);
-    if (index === -1) {
-        console.error('method ' + methodName + ' not found in the abi');
-        return undefined;
-    }
-    return json[index];
-};
-
-/// @param string string to be padded
-/// @param number of characters that result string should have
-/// @param sign, by default 0
-/// @returns right aligned string
-var padLeft = function (string, chars, sign) {
-    return new Array(chars - string.length + 1).join(sign ? sign : "0") + string;
-};
-
-/// @param expected type prefix (string)
-/// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false
-var prefixedType = function (prefix) {
-    return function (type) {
-        return type.indexOf(prefix) === 0;
-    };
-};
-
-/// @param expected type name (string)
-/// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false
-var namedType = function (name) {
-    return function (type) {
-        return name === type;
-    };
+var web3 = require('./web3'); 
+var utils = require('./utils');
+var types = require('./types');
+var c = require('./const');
+var f = require('./formatters');
+
+var displayTypeError = function (type) {
+    console.error('parser does not support type: ' + type);
 };
 
+/// This method should be called if we want to check if givent type is an array type
+/// @returns true if it is, otherwise false
 var arrayType = function (type) {
     return type.slice(-2) === '[]';
 };
 
-/// Formats input value to byte representation of int
-/// If value is negative, return it's two's complement
-/// If the value is floating point, round it down
-/// @returns right-aligned byte representation of int
-var formatInputInt = function (value) {
-    var padding = ETH_PADDING * 2;
-    if (value instanceof BigNumber || typeof value === 'number') {
-        if (typeof value === 'number')
-            value = new BigNumber(value);
-        value = value.round();
-
-        if (value.lessThan(0)) 
-            value = new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16).plus(value).plus(1);
-        value = value.toString(16);
-    }
-    else if (value.indexOf('0x') === 0)
-        value = value.substr(2);
-    else if (typeof value === 'string')
-        value = formatInputInt(new BigNumber(value));
-    else
-        value = (+value).toString(16);
-    return padLeft(value, padding);
-};
-
-/// Formats input value to byte representation of string
-/// @returns left-algined byte representation of string
-var formatInputString = function (value) {
-    return web3.fromAscii(value, ETH_PADDING).substr(2);
-};
-
-/// Formats input value to byte representation of bool
-/// @returns right-aligned byte representation bool
-var formatInputBool = function (value) {
-    return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');
-};
-
-/// Formats input value to byte representation of real
-/// Values are multiplied by 2^m and encoded as integers
-/// @returns byte representation of real
-var formatInputReal = function (value) {
-    return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128))); 
-};
-
 var dynamicTypeBytes = function (type, value) {
     // TODO: decide what to do with array of strings
     if (arrayType(type) || type === 'string')    // only string itself that is dynamic; stringX is static length.
-        return formatInputInt(value.length); 
+        return f.formatInputInt(value.length); 
     return "";
 };
 
-/// Setups input formatters for solidity types
-/// @returns an array of input formatters 
-var setupInputTypes = function () {
-    
-    return [
-        { type: prefixedType('uint'), format: formatInputInt },
-        { type: prefixedType('int'), format: formatInputInt },
-        { type: prefixedType('hash'), format: formatInputInt },
-        { type: prefixedType('string'), format: formatInputString }, 
-        { type: prefixedType('real'), format: formatInputReal },
-        { type: prefixedType('ureal'), format: formatInputReal },
-        { type: namedType('address'), format: formatInputInt },
-        { type: namedType('bool'), format: formatInputBool }
-    ];
-};
-
-var inputTypes = setupInputTypes();
+var inputTypes = types.inputTypes(); 
 
 /// Formats input params to bytes
-/// @param contract json abi
-/// @param name of the method that we want to use
+/// @param abi contract method inputs
 /// @param array of params that will be formatted to bytes
 /// @returns bytes representation of input params
-var toAbiInput = function (json, methodName, params) {
+var formatInput = function (inputs, params) {
     var bytes = "";
-
-    var method = getMethodWithName(json, methodName);
-    var padding = ETH_PADDING * 2;
+    var padding = c.ETH_PADDING * 2;
 
     /// first we iterate in search for dynamic 
-    method.inputs.forEach(function (input, index) {
+    inputs.forEach(function (input, index) {
         bytes += dynamicTypeBytes(input.type, params[index]);
     });
 
-    method.inputs.forEach(function (input, i) {
+    inputs.forEach(function (input, i) {
         var typeMatch = false;
         for (var j = 0; j < inputTypes.length && !typeMatch; j++) {
-            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);
+            typeMatch = inputTypes[j].type(inputs[i].type, params[i]);
         }
         if (!typeMatch) {
-            console.error('input parser does not support type: ' + method.inputs[i].type);
+            displayTypeError(inputs[i].type);
         }
 
         var formatter = inputTypes[j - 1].format;
         var toAppend = "";
 
-        if (arrayType(method.inputs[i].type))
+        if (arrayType(inputs[i].type))
             toAppend = params[i].reduce(function (acc, curr) {
                 return acc + formatter(curr);
             }, "");
@@ -202,118 +84,44 @@ var toAbiInput = function (json, methodName, params) {
     return bytes;
 };
 
-/// Check if input value is negative
-/// @param value is hex format
-/// @returns true if it is negative, otherwise false
-var signedIsNegative = function (value) {
-    return (new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1)) === '1';
-};
-
-/// Formats input right-aligned input bytes to int
-/// @returns right-aligned input bytes formatted to int
-var formatOutputInt = function (value) {
-    value = value || "0";
-    // check if it's negative number
-    // it it is, return two's complement
-    if (signedIsNegative(value)) {
-        return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);
-    }
-    return new BigNumber(value, 16);
-};
-
-/// Formats big right-aligned input bytes to uint
-/// @returns right-aligned input bytes formatted to uint
-var formatOutputUInt = function (value) {
-    value = value || "0";
-    return new BigNumber(value, 16);
-};
-
-/// @returns input bytes formatted to real
-var formatOutputReal = function (value) {
-    return formatOutputInt(value).dividedBy(new BigNumber(2).pow(128)); 
-};
-
-/// @returns input bytes formatted to ureal
-var formatOutputUReal = function (value) {
-    return formatOutputUInt(value).dividedBy(new BigNumber(2).pow(128)); 
-};
-
-/// @returns right-aligned input bytes formatted to hex
-var formatOutputHash = function (value) {
-    return "0x" + value;
-};
-
-/// @returns right-aligned input bytes formatted to bool
-var formatOutputBool = function (value) {
-    return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;
-};
-
-/// @returns left-aligned input bytes formatted to ascii string
-var formatOutputString = function (value) {
-    return web3.toAscii(value);
-};
-
-/// @returns right-aligned input bytes formatted to address
-var formatOutputAddress = function (value) {
-    return "0x" + value.slice(value.length - 40, value.length);
-};
-
 var dynamicBytesLength = function (type) {
     if (arrayType(type) || type === 'string')   // only string itself that is dynamic; stringX is static length.
-        return ETH_PADDING * 2;
+        return c.ETH_PADDING * 2;
     return 0;
 };
 
-/// Setups output formaters for solidity types
-/// @returns an array of output formatters
-var setupOutputTypes = function () {
-
-    return [
-        { type: prefixedType('uint'), format: formatOutputUInt },
-        { type: prefixedType('int'), format: formatOutputInt },
-        { type: prefixedType('hash'), format: formatOutputHash },
-        { type: prefixedType('string'), format: formatOutputString },
-        { type: prefixedType('real'), format: formatOutputReal },
-        { type: prefixedType('ureal'), format: formatOutputUReal },
-        { type: namedType('address'), format: formatOutputAddress },
-        { type: namedType('bool'), format: formatOutputBool }
-    ];
-};
-
-var outputTypes = setupOutputTypes();
+var outputTypes = types.outputTypes(); 
 
 /// Formats output bytes back to param list
-/// @param contract json abi
-/// @param name of the method that we want to use
+/// @param contract abi method outputs
 /// @param bytes representtion of output 
 /// @returns array of output params 
-var fromAbiOutput = function (json, methodName, output) {
+var formatOutput = function (outs, output) {
     
     output = output.slice(2);
     var result = [];
-    var method = getMethodWithName(json, methodName);
-    var padding = ETH_PADDING * 2;
+    var padding = c.ETH_PADDING * 2;
 
-    var dynamicPartLength = method.outputs.reduce(function (acc, curr) {
+    var dynamicPartLength = outs.reduce(function (acc, curr) {
         return acc + dynamicBytesLength(curr.type);
     }, 0);
     
     var dynamicPart = output.slice(0, dynamicPartLength);
     output = output.slice(dynamicPartLength);
 
-    method.outputs.forEach(function (out, i) {
+    outs.forEach(function (out, i) {
         var typeMatch = false;
         for (var j = 0; j < outputTypes.length && !typeMatch; j++) {
-            typeMatch = outputTypes[j].type(method.outputs[i].type);
+            typeMatch = outputTypes[j].type(outs[i].type);
         }
 
         if (!typeMatch) {
-            console.error('output parser does not support type: ' + method.outputs[i].type);
+            displayTypeError(outs[i].type);
         }
 
         var formatter = outputTypes[j - 1].format;
-        if (arrayType(method.outputs[i].type)) {
-            var size = formatOutputUInt(dynamicPart.slice(0, padding));
+        if (arrayType(outs[i].type)) {
+            var size = f.formatOutputUInt(dynamicPart.slice(0, padding));
             dynamicPart = dynamicPart.slice(padding);
             var array = [];
             for (var k = 0; k < size; k++) {
@@ -322,7 +130,7 @@ var fromAbiOutput = function (json, methodName, output) {
             }
             result.push(array);
         }
-        else if (prefixedType('string')(method.outputs[i].type)) {
+        else if (types.prefixedType('string')(outs[i].type)) {
             dynamicPart = dynamicPart.slice(padding); 
             result.push(formatter(output.slice(0, padding)));
             output = output.slice(padding);
@@ -335,30 +143,18 @@ var fromAbiOutput = function (json, methodName, output) {
     return result;
 };
 
-/// @returns display name for method eg. multiply(uint256) -> multiply
-var methodDisplayName = function (method) {
-    var length = method.indexOf('('); 
-    return length !== -1 ? method.substr(0, length) : method;
-};
-
-/// @returns overloaded part of method's name
-var methodTypeName = function (method) {
-    /// TODO: make it not vulnerable
-    var length = method.indexOf('(');
-    return length !== -1 ? method.substr(length + 1, method.length - 1 - (length + 1)) : "";
-};
-
 /// @param json abi for contract
 /// @returns input parser object for given json abi
+/// TODO: refactor creating the parser, do not double logic from contract
 var inputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
-        var displayName = methodDisplayName(method.name); 
-        var typeName = methodTypeName(method.name);
+        var displayName = utils.extractDisplayName(method.name); 
+        var typeName = utils.extractTypeName(method.name);
 
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
-            return toAbiInput(json, method.name, params);
+            return formatInput(method.inputs, params);
         };
        
         if (parser[displayName] === undefined) {
@@ -377,11 +173,11 @@ var outputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
 
-        var displayName = methodDisplayName(method.name); 
-        var typeName = methodTypeName(method.name);
+        var displayName = utils.extractDisplayName(method.name); 
+        var typeName = utils.extractTypeName(method.name);
 
         var impl = function (output) {
-            return fromAbiOutput(json, method.name, output);
+            return formatOutput(method.outputs, output);
         };
 
         if (parser[displayName] === undefined) {
@@ -394,23 +190,27 @@ var outputParser = function (json) {
     return parser;
 };
 
-/// @param method name for which we want to get method signature
-/// @returns (promise) contract method signature for method with given name
-var methodSignature = function (name) {
-    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
+/// @param function/event name for which we want to get signature
+/// @returns signature of function/event with given name
+var signatureFromAscii = function (name) {
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + c.ETH_SIGNATURE_LENGTH * 2);
+};
+
+var eventSignatureFromAscii = function (name) {
+    return web3.sha3(web3.fromAscii(name));
 };
 
 module.exports = {
     inputParser: inputParser,
     outputParser: outputParser,
-    methodSignature: methodSignature,
-    methodDisplayName: methodDisplayName,
-    methodTypeName: methodTypeName,
-    getMethodWithName: getMethodWithName
+    formatInput: formatInput,
+    formatOutput: formatOutput,
+    signatureFromAscii: signatureFromAscii,
+    eventSignatureFromAscii: eventSignatureFromAscii
 };
 
 
-},{"./web3":7}],2:[function(require,module,exports){
+},{"./const":2,"./formatters":6,"./types":11,"./utils":12,"./web3":13}],2:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -427,104 +227,142 @@ module.exports = {
     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
+/** @file const.js
  * @authors:
  *   Marek Kotewicz <marek@ethdev.com>
- * @date 2014
+ * @date 2015
  */
 
-var web3 = require('./web3'); // jshint ignore:line
-var abi = require('./abi');
+/// required to define ETH_BIGNUMBER_ROUNDING_MODE
+if ("build" !== 'build') {/*
+    var BigNumber = require('bignumber.js'); // jshint ignore:line
+*/}
 
-/**
- * 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 ETH_UNITS = [ 
+    'wei', 
+    'Kwei', 
+    'Mwei', 
+    'Gwei', 
+    'szabo', 
+    'finney', 
+    'ether', 
+    'grand', 
+    'Mether', 
+    'Gether', 
+    'Tether', 
+    'Pether', 
+    'Eether', 
+    'Zether', 
+    'Yether', 
+    'Nether', 
+    'Dether', 
+    'Vether', 
+    'Uether' 
+];
 
-var contract = function (address, desc) {
+module.exports = {
+    ETH_PADDING: 32,
+    ETH_SIGNATURE_LENGTH: 4,
+    ETH_UNITS: ETH_UNITS,
+    ETH_BIGNUMBER_ROUNDING_MODE: { ROUNDING_MODE: BigNumber.ROUND_DOWN }
+};
 
-    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);
+},{}],3:[function(require,module,exports){
+/*
+    This file is part of ethereum.js.
 
-    var result = {};
+    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.
 
-    result.call = function (options) {
-        result._isTransact = false;
-        result._options = options;
-        return result;
+    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
+ */
+
+var web3 = require('./web3'); 
+var abi = require('./abi');
+var utils = require('./utils');
+var eventImpl = require('./event');
+
+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;
     };
 
-    result.transact = function (options) {
-        result._isTransact = true;
-        result._options = options;
-        return result;
+    contract.transact = function (options) {
+        contract._isTransact = true;
+        contract._options = options;
+        return contract;
     };
 
-    result._options = {};
+    contract._options = {};
     ['gas', 'gasPrice', 'value', 'from'].forEach(function(p) {
-        result[p] = function (v) {
-            result._options[p] = v;
-            return result;
+        contract[p] = function (v) {
+            contract._options[p] = v;
+            return contract;
         };
     });
 
+};
 
-    desc.forEach(function (method) {
+var addFunctionsToContract = function (contract, desc, address) {
+    var inputParser = abi.inputParser(desc);
+    var outputParser = abi.outputParser(desc);
 
-        var displayName = abi.methodDisplayName(method.name);
-        var typeName = abi.methodTypeName(method.name);
+    // create contract functions
+    utils.filterFunctions(desc).forEach(function (method) {
+
+        var displayName = utils.extractDisplayName(method.name);
+        var typeName = utils.extractTypeName(method.name);
 
         var impl = function () {
             var params = Array.prototype.slice.call(arguments);
-            var signature = abi.methodSignature(method.name);
+            var signature = abi.signatureFromAscii(method.name);
             var parsed = inputParser[displayName][typeName].apply(null, params);
 
-            var options = result._options || {};
+            var options = contract._options || {};
             options.to = address;
             options.data = signature + parsed;
             
-            var isTransact = result._isTransact === true || (result._isTransact !== false && !method.constant);
+            var isTransact = contract._isTransact === true || (contract._isTransact !== false && !method.constant);
             var collapse = options.collapse !== false;
             
             // reset
-            result._options = {};
-            result._isTransact = null;
+            contract._options = {};
+            contract._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;
+                
+                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);
@@ -543,21 +381,250 @@ var contract = function (address, desc) {
             return ret;
         };
 
-        if (result[displayName] === undefined) {
-            result[displayName] = impl;
+        if (contract[displayName] === undefined) {
+            contract[displayName] = impl;
         }
 
-        result[displayName][typeName] = impl;
+        contract[displayName][typeName] = impl;
+    });
+};
 
+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;
+
+    });
+};
+
+
+/**
+ * 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;
 };
 
 module.exports = contract;
 
 
-},{"./abi":1,"./web3":7}],3:[function(require,module,exports){
+},{"./abi":1,"./event":4,"./utils":12,"./web3":13}],4:[function(require,module,exports){
+/*
+    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 event.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2014
+ */
+
+var abi = require('./abi');
+var utils = require('./utils');
+
+/// filter inputs array && returns only indexed (or not) inputs
+/// @param inputs array
+/// @param bool if result should be an array of indexed params on not
+/// @returns array of (not?) indexed params
+var filterInputs = function (inputs, indexed) {
+    return inputs.filter(function (current) {
+        return current.indexed === indexed;
+    });
+};
+
+var inputWithName = function (inputs, name) {
+    var index = utils.findIndex(inputs, function (input) {
+        return input.name === name;
+    });
+    
+    if (index === -1) {
+        console.error('indexed param with name ' + name + ' not found');
+        return undefined;
+    }
+    return inputs[index];
+};
+
+var indexedParamsToTopics = function (event, indexed) {
+    // sort keys?
+    return Object.keys(indexed).map(function (key) {
+        var inputs = [inputWithName(filterInputs(event.inputs, true), key)];
+
+        var value = indexed[key];
+        if (value instanceof Array) {
+            return value.map(function (v) {
+                return abi.formatInput(inputs, [v]);
+            }); 
+        }
+        return abi.formatInput(inputs, [value]);
+    });
+};
+
+var inputParser = function (address, signature, event) {
+    
+    // valid options are 'earliest', 'latest', 'offset' and 'max', as defined for 'eth.watch'
+    return function (indexed, options) {
+        var o = options || {};
+        o.address = address;
+        o.topic = [];
+        o.topic.push(signature);
+        if (indexed) {
+            o.topic = o.topic.concat(indexedParamsToTopics(event, indexed));
+        }
+        return o;
+    };
+};
+
+var getArgumentsObject = function (inputs, indexed, notIndexed) {
+    var indexedCopy = indexed.slice();
+    var notIndexedCopy = notIndexed.slice();
+    return inputs.reduce(function (acc, current) {
+        var value;
+        if (current.indexed)
+            value = indexed.splice(0, 1)[0];
+        else
+            value = notIndexed.splice(0, 1)[0];
+
+        acc[current.name] = value;
+        return acc;
+    }, {}); 
+};
+ 
+var outputParser = function (event) {
+    
+    return function (output) {
+        var result = {
+            event: utils.extractDisplayName(event.name),
+            number: output.number,
+            args: {}
+        };
+
+        if (!output.topic) {
+            return result;
+        }
+       
+        var indexedOutputs = filterInputs(event.inputs, true);
+        var indexedData = "0x" + output.topic.slice(1, output.topic.length).map(function (topic) { return topic.slice(2); }).join("");
+        var indexedRes = abi.formatOutput(indexedOutputs, indexedData);
+
+        var notIndexedOutputs = filterInputs(event.inputs, false);
+        var notIndexedRes = abi.formatOutput(notIndexedOutputs, output.data);
+
+        result.args = getArgumentsObject(event.inputs, indexedRes, notIndexedRes);
+
+        return result;
+    };
+};
+
+var getMatchingEvent = function (events, payload) {
+    for (var i = 0; i < events.length; i++) {
+        var signature = abi.eventSignatureFromAscii(events[i].name); 
+        if (signature === payload.topic[0]) {
+            return events[i];
+        }
+    }
+    return undefined;
+};
+
+
+module.exports = {
+    inputParser: inputParser,
+    outputParser: outputParser,
+    getMatchingEvent: getMatchingEvent
+};
+
+
+},{"./abi":1,"./utils":12}],5:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -587,18 +654,45 @@ var web3 = require('./web3'); // jshint ignore:line
 
 /// should be used when we want to watch something
 /// it's using inner polling mechanism and is notified about changes
+/// TODO: change 'options' name cause it may be not the best matching one, since we have events
 var Filter = function(options, impl) {
+
+    if (typeof options !== "string") {
+
+        // topics property is deprecated, warn about it!
+        if (options.topics) {
+            console.warn('"topics" is deprecated, use "topic" instead');
+        }
+        
+        this._onWatchResult = options._onWatchEventResult;
+
+        // evaluate lazy properties
+        options = {
+            to: options.to,
+            topic: options.topic,
+            earliest: options.earliest,
+            latest: options.latest,
+            max: options.max,
+            skip: options.skip,
+            address: options.address
+        };
+
+    }
+    
     this.impl = impl;
     this.callbacks = [];
 
     this.id = impl.newFilter(options);
-    web3.provider.startPolling({call: impl.changed, args: [this.id]}, this.id, this.trigger.bind(this));
+    web3.provider.startPolling({method: impl.changed, params: [this.id]}, this.id, this.trigger.bind(this));
 };
 
 /// alias for changed*
 Filter.prototype.arrived = function(callback) {
     this.changed(callback);
 };
+Filter.prototype.happened = function(callback) {
+    this.changed(callback);
+};
 
 /// gets called when there is new eth/shh message
 Filter.prototype.changed = function(callback) {
@@ -609,7 +703,8 @@ Filter.prototype.changed = function(callback) {
 Filter.prototype.trigger = function(messages) {
     for (var i = 0; i < this.callbacks.length; i++) {
         for (var j = 0; j < messages.length; j++) {
-            this.callbacks[i].call(this, messages[j]);
+            var message = this._onWatchResult ? this._onWatchResult(messages[j]) : messages[j];
+            this.callbacks[i].call(this, message);
         }
     }
 };
@@ -632,7 +727,163 @@ Filter.prototype.logs = function () {
 
 module.exports = Filter;
 
-},{"./web3":7}],4:[function(require,module,exports){
+},{"./web3":13}],6:[function(require,module,exports){
+/*
+    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 formatters.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+if ("build" !== 'build') {/*
+    var BigNumber = require('bignumber.js'); // jshint ignore:line
+*/}
+
+var utils = require('./utils');
+var c = require('./const');
+
+/// @param string string to be padded
+/// @param number of characters that result string should have
+/// @param sign, by default 0
+/// @returns right aligned string
+var padLeft = function (string, chars, sign) {
+    return new Array(chars - string.length + 1).join(sign ? sign : "0") + string;
+};
+
+/// Formats input value to byte representation of int
+/// If value is negative, return it's two's complement
+/// If the value is floating point, round it down
+/// @returns right-aligned byte representation of int
+var formatInputInt = function (value) {
+    var padding = c.ETH_PADDING * 2;
+    if (value instanceof BigNumber || typeof value === 'number') {
+        if (typeof value === 'number')
+            value = new BigNumber(value);
+        BigNumber.config(c.ETH_BIGNUMBER_ROUNDING_MODE);
+        value = value.round();
+
+        if (value.lessThan(0)) 
+            value = new BigNumber("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16).plus(value).plus(1);
+        value = value.toString(16);
+    }
+    else if (value.indexOf('0x') === 0)
+        value = value.substr(2);
+    else if (typeof value === 'string')
+        value = formatInputInt(new BigNumber(value));
+    else
+        value = (+value).toString(16);
+    return padLeft(value, padding);
+};
+
+/// Formats input value to byte representation of string
+/// @returns left-algined byte representation of string
+var formatInputString = function (value) {
+    return utils.fromAscii(value, c.ETH_PADDING).substr(2);
+};
+
+/// Formats input value to byte representation of bool
+/// @returns right-aligned byte representation bool
+var formatInputBool = function (value) {
+    return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');
+};
+
+/// Formats input value to byte representation of real
+/// Values are multiplied by 2^m and encoded as integers
+/// @returns byte representation of real
+var formatInputReal = function (value) {
+    return formatInputInt(new BigNumber(value).times(new BigNumber(2).pow(128))); 
+};
+
+
+/// Check if input value is negative
+/// @param value is hex format
+/// @returns true if it is negative, otherwise false
+var signedIsNegative = function (value) {
+    return (new BigNumber(value.substr(0, 1), 16).toString(2).substr(0, 1)) === '1';
+};
+
+/// Formats input right-aligned input bytes to int
+/// @returns right-aligned input bytes formatted to int
+var formatOutputInt = function (value) {
+    value = value || "0";
+    // check if it's negative number
+    // it it is, return two's complement
+    if (signedIsNegative(value)) {
+        return new BigNumber(value, 16).minus(new BigNumber('ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff', 16)).minus(1);
+    }
+    return new BigNumber(value, 16);
+};
+
+/// Formats big right-aligned input bytes to uint
+/// @returns right-aligned input bytes formatted to uint
+var formatOutputUInt = function (value) {
+    value = value || "0";
+    return new BigNumber(value, 16);
+};
+
+/// @returns input bytes formatted to real
+var formatOutputReal = function (value) {
+    return formatOutputInt(value).dividedBy(new BigNumber(2).pow(128)); 
+};
+
+/// @returns input bytes formatted to ureal
+var formatOutputUReal = function (value) {
+    return formatOutputUInt(value).dividedBy(new BigNumber(2).pow(128)); 
+};
+
+/// @returns right-aligned input bytes formatted to hex
+var formatOutputHash = function (value) {
+    return "0x" + value;
+};
+
+/// @returns right-aligned input bytes formatted to bool
+var formatOutputBool = function (value) {
+    return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;
+};
+
+/// @returns left-aligned input bytes formatted to ascii string
+var formatOutputString = function (value) {
+    return utils.toAscii(value);
+};
+
+/// @returns right-aligned input bytes formatted to address
+var formatOutputAddress = function (value) {
+    return "0x" + value.slice(value.length - 40, value.length);
+};
+
+
+module.exports = {
+    formatInputInt: formatInputInt,
+    formatInputString: formatInputString,
+    formatInputBool: formatInputBool,
+    formatInputReal: formatInputReal,
+    formatOutputInt: formatOutputInt,
+    formatOutputUInt: formatOutputUInt,
+    formatOutputReal: formatOutputReal,
+    formatOutputUReal: formatOutputUReal,
+    formatOutputHash: formatOutputHash,
+    formatOutputBool: formatOutputBool,
+    formatOutputString: formatOutputString,
+    formatOutputAddress: formatOutputAddress
+};
+
+
+},{"./const":2,"./utils":12}],7:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -665,46 +916,89 @@ var HttpSyncProvider = function (host) {
     this.host = host || 'http://localhost:8080';
 };
 
-/// Transforms inner message to proper jsonrpc object
-/// @param inner message object
-/// @returns jsonrpc object
-function formatJsonRpcObject(object) {
-    return {
-        jsonrpc: '2.0',
-        method: object.call,
-        params: object.args,
-        id: object._id
-    };
-}
-
-/// Transforms jsonrpc object to inner message
-/// @param incoming jsonrpc message 
-/// @returns inner message object
-function formatJsonRpcMessage(message) {
-    var object = JSON.parse(message);
-
-    return {
-        _id: object.id,
-        data: object.result,
-        error: object.error
-    };
-}
-
 HttpSyncProvider.prototype.send = function (payload) {
-    var data = formatJsonRpcObject(payload);
+    //var data = formatJsonRpcObject(payload);
     
     var request = new XMLHttpRequest();
     request.open('POST', this.host, false);
-    request.send(JSON.stringify(data));
+    request.send(JSON.stringify(payload));
     
     // check request.status
-    return request.responseText;
+    var result = request.responseText;
+    return JSON.parse(result);
 };
 
 module.exports = HttpSyncProvider;
 
 
-},{}],5:[function(require,module,exports){
+},{}],8:[function(require,module,exports){
+/*
+    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 jsonrpc.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var messageId = 1;
+
+/// Should be called to valid json create payload object
+/// @param method of jsonrpc call, required
+/// @param params, an array of method params, optional
+/// @returns valid jsonrpc payload object
+var toPayload = function (method, params) {
+    if (!method)
+        console.error('jsonrpc method should be specified!');
+
+    return {
+        jsonrpc: '2.0',
+        method: method,
+        params: params || [],
+        id: messageId++
+    }; 
+};
+
+/// Should be called to check if jsonrpc response is valid
+/// @returns true if response is valid, otherwise false 
+var isValidResponse = function (response) {
+    return !!response &&
+        !response.error &&
+        response.jsonrpc === '2.0' &&
+        typeof response.id === 'number' &&
+        response.result !== undefined; // only undefined is not valid json object
+};
+
+/// Should be called to create batch payload object
+/// @param messages, an array of objects with method (required) and params (optional) fields
+var toBatchPayload = function (messages) {
+    return messages.map(function (message) {
+        return toPayload(message.method, message.params);
+    }); 
+};
+
+module.exports = {
+    toPayload: toPayload,
+    isValidResponse: isValidResponse,
+    toBatchPayload: toBatchPayload
+};
+
+
+
+},{}],9:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -730,7 +1024,9 @@ module.exports = HttpSyncProvider;
  * @date 2014
  */
 
-var web3 = require('./web3'); // jshint ignore:line
+var web3 = require('./web3'); 
+var jsonrpc = require('./jsonrpc');
+
 
 /**
  * Provider manager object prototype
@@ -744,25 +1040,35 @@ var web3 = require('./web3'); // jshint ignore:line
 var ProviderManager = function() {
     this.polls = [];
     this.provider = undefined;
-    this.id = 1;
 
     var self = this;
     var poll = function () {
         if (self.provider) {
-            self.polls.forEach(function (data) {
-                data.data._id = self.id;
-                self.id++;
-                var result = self.provider.send(data.data);
-            
-                result = JSON.parse(result);
+            var pollsBatch = self.polls.map(function (data) {
+                return data.data;
+            });
+
+            var payload = jsonrpc.toBatchPayload(pollsBatch);
+            var results = self.provider.send(payload);
+
+            self.polls.forEach(function (data, index) {
+                var result = results[index];
                 
+                if (!jsonrpc.isValidResponse(result)) {
+                    console.log(result);
+                    return;
+                }
+
+                result = result.result;
                 // dont call the callback if result is not an array, or empty one
-                if (result.error || !(result.result instanceof Array) || result.result.length === 0) {
+                if (!(result instanceof Array) || result.length === 0) {
                     return;
                 }
 
-                data.callback(result.result);
+                data.callback(result);
+
             });
+
         }
         setTimeout(poll, 1000);
     };
@@ -770,22 +1076,19 @@ var ProviderManager = function() {
 };
 
 /// sends outgoing requests
+/// @params data - an object with at least 'method' property
 ProviderManager.prototype.send = function(data) {
-
-    data.args = data.args || [];
-    data._id = this.id++;
+    var payload = jsonrpc.toPayload(data.method, data.params);
 
     if (this.provider === undefined) {
         console.error('provider is not set');
         return null; 
     }
 
-    //TODO: handle error here? 
-    var result = this.provider.send(data);
-    result = JSON.parse(result);
+    var result = this.provider.send(payload);
 
-    if (result.error) {
-        console.log(result.error);
+    if (!jsonrpc.isValidResponse(result)) {
+        console.log(result);
         return null;
     }
 
@@ -816,7 +1119,7 @@ ProviderManager.prototype.stopPolling = function (pollId) {
 module.exports = ProviderManager;
 
 
-},{"./web3":7}],6:[function(require,module,exports){
+},{"./jsonrpc":8,"./web3":13}],10:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -844,13 +1147,239 @@ var QtSyncProvider = function () {
 };
 
 QtSyncProvider.prototype.send = function (payload) {
-    return navigator.qt.callMethod(JSON.stringify(payload));
+    var result = navigator.qt.callMethod(JSON.stringify(payload));
+    return JSON.parse(result);
 };
 
 module.exports = QtSyncProvider;
 
 
-},{}],7:[function(require,module,exports){
+},{}],11:[function(require,module,exports){
+/*
+    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 types.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var f = require('./formatters');
+
+/// @param expected type prefix (string)
+/// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false
+var prefixedType = function (prefix) {
+    return function (type) {
+        return type.indexOf(prefix) === 0;
+    };
+};
+
+/// @param expected type name (string)
+/// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false
+var namedType = function (name) {
+    return function (type) {
+        return name === type;
+    };
+};
+
+/// Setups input formatters for solidity types
+/// @returns an array of input formatters 
+var inputTypes = function () {
+    
+    return [
+        { type: prefixedType('uint'), format: f.formatInputInt },
+        { type: prefixedType('int'), format: f.formatInputInt },
+        { type: prefixedType('hash'), format: f.formatInputInt },
+        { type: prefixedType('string'), format: f.formatInputString }, 
+        { type: prefixedType('real'), format: f.formatInputReal },
+        { type: prefixedType('ureal'), format: f.formatInputReal },
+        { type: namedType('address'), format: f.formatInputInt },
+        { type: namedType('bool'), format: f.formatInputBool }
+    ];
+};
+
+/// Setups output formaters for solidity types
+/// @returns an array of output formatters
+var outputTypes = function () {
+
+    return [
+        { type: prefixedType('uint'), format: f.formatOutputUInt },
+        { type: prefixedType('int'), format: f.formatOutputInt },
+        { type: prefixedType('hash'), format: f.formatOutputHash },
+        { type: prefixedType('string'), format: f.formatOutputString },
+        { type: prefixedType('real'), format: f.formatOutputReal },
+        { type: prefixedType('ureal'), format: f.formatOutputUReal },
+        { type: namedType('address'), format: f.formatOutputAddress },
+        { type: namedType('bool'), format: f.formatOutputBool }
+    ];
+};
+
+module.exports = {
+    prefixedType: prefixedType,
+    namedType: namedType,
+    inputTypes: inputTypes,
+    outputTypes: outputTypes
+};
+
+
+},{"./formatters":6}],12:[function(require,module,exports){
+/*
+    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 utils.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var c = require('./const');
+
+/// Finds first index of array element matching pattern
+/// @param array
+/// @param callback pattern
+/// @returns index of element
+var findIndex = function (array, callback) {
+    var end = false;
+    var i = 0;
+    for (; i < array.length && !end; i++) {
+        end = callback(array[i]);
+    }
+    return end ? i - 1 : -1;
+};
+
+/// @returns ascii string representation of hex value prefixed with 0x
+var toAscii = function(hex) {
+// Find termination
+    var str = "";
+    var i = 0, l = hex.length;
+    if (hex.substring(0, 2) === '0x') {
+        i = 2;
+    }
+    for (; i < l; i+=2) {
+        var code = parseInt(hex.substr(i, 2), 16);
+        if (code === 0) {
+            break;
+        }
+
+        str += String.fromCharCode(code);
+    }
+
+    return str;
+};
+    
+var toHex = function(str) {
+    var hex = "";
+    for(var i = 0; i < str.length; i++) {
+        var n = str.charCodeAt(i).toString(16);
+        hex += n.length < 2 ? '0' + n : n;
+    }
+
+    return hex;
+};
+
+/// @returns hex representation (prefixed by 0x) of ascii string
+var fromAscii = function(str, pad) {
+    pad = pad === undefined ? 0 : pad;
+    var hex = toHex(str);
+    while (hex.length < pad*2)
+        hex += "00";
+    return "0x" + hex;
+};
+
+/// @returns display name for function/event eg. multiply(uint256) -> multiply
+var extractDisplayName = function (name) {
+    var length = name.indexOf('('); 
+    return length !== -1 ? name.substr(0, length) : name;
+};
+
+/// @returns overloaded part of function/event name
+var extractTypeName = function (name) {
+    /// TODO: make it invulnerable
+    var length = name.indexOf('(');
+    return length !== -1 ? name.substr(length + 1, name.length - 1 - (length + 1)).replace(' ', '') : "";
+};
+
+/// Filters all function from input abi
+/// @returns abi array with filtered objects of type 'function'
+var filterFunctions = function (json) {
+    return json.filter(function (current) {
+        return current.type === 'function'; 
+    }); 
+};
+
+/// Filters all events form input abi
+/// @returns abi array with filtered objects of type 'event'
+var filterEvents = function (json) {
+    return json.filter(function (current) {
+        return current.type === 'event';
+    });
+};
+
+/// used to transform value/string to eth string
+/// TODO: use BigNumber.js to parse int
+/// TODO: add tests for it!
+var toEth = function (str) {
+    var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
+    var unit = 0;
+    var units = c.ETH_UNITS;
+    while (val > 3000 && unit < units.length - 1)
+    {
+        val /= 1000;
+        unit++;
+    }
+    var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);
+    var replaceFunction = function($0, $1, $2) {
+        return $1 + ',' + $2;
+    };
+
+    while (true) {
+        var o = s;
+        s = s.replace(/(\d)(\d\d\d[\.\,])/, replaceFunction);
+        if (o === s)
+            break;
+    }
+    return s + ' ' + units[unit];
+};
+
+module.exports = {
+    findIndex: findIndex,
+    toAscii: toAscii,
+    fromAscii: fromAscii,
+    extractDisplayName: extractDisplayName,
+    extractTypeName: extractTypeName,
+    filterFunctions: filterFunctions,
+    filterEvents: filterEvents,
+    toEth: toEth
+};
+
+
+},{"./const":2}],13:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -880,27 +1409,7 @@ if ("build" !== 'build') {/*
     var BigNumber = require('bignumber.js');
 */}
 
-var ETH_UNITS = [ 
-    'wei', 
-    'Kwei', 
-    'Mwei', 
-    'Gwei', 
-    'szabo', 
-    'finney', 
-    'ether', 
-    'grand', 
-    'Mether', 
-    'Gether', 
-    'Tether', 
-    'Pether', 
-    'Eether', 
-    'Zether', 
-    'Yether', 
-    'Nether', 
-    'Dether', 
-    'Vether', 
-    'Uether' 
-];
+var utils = require('./utils');
 
 /// @returns an array of objects describing web3 api methods
 var web3Methods = function () {
@@ -1009,8 +1518,8 @@ var setupMethods = function (obj, methods) {
             var args = Array.prototype.slice.call(arguments);
             var call = typeof method.call === 'function' ? method.call(args) : method.call;
             return web3.provider.send({
-                call: call,
-                args: args
+                method: call,
+                params: args
             });
         };
     });
@@ -1023,15 +1532,15 @@ var setupProperties = function (obj, properties) {
         var proto = {};
         proto.get = function () {
             return web3.provider.send({
-                call: property.getter
+                method: property.getter
             });
         };
 
         if (property.setter) {
             proto.set = function (val) {
                 return web3.provider.send({
-                    call: property.setter,
-                    args: [val]
+                    method: property.setter,
+                    params: [val]
                 });
             };
         }
@@ -1045,43 +1554,11 @@ var web3 = {
     _events: {},
     providers: {},
 
-    toHex: function(str) {
-        var hex = "";
-        for(var i = 0; i < str.length; i++) {
-            var n = str.charCodeAt(i).toString(16);
-            hex += n.length < 2 ? '0' + n : n;
-        }
-
-        return hex;
-    },
-
     /// @returns ascii string representation of hex value prefixed with 0x
-    toAscii: function(hex) {
-        // Find termination
-        var str = "";
-        var i = 0, l = hex.length;
-        if (hex.substring(0, 2) === '0x')
-            i = 2;
-        for(; i < l; i+=2) {
-            var code = parseInt(hex.substr(i, 2), 16);
-            if(code === 0) {
-                break;
-            }
-
-            str += String.fromCharCode(code);
-        }
-
-        return str;
-    },
+    toAscii: utils.toAscii,
 
     /// @returns hex representation (prefixed by 0x) of ascii string
-    fromAscii: function(str, pad) {
-        pad = pad === undefined ? 0 : pad;
-        var hex = this.toHex(str);
-        while(hex.length < pad*2)
-            hex += "00";
-        return "0x" + hex;
-    },
+    fromAscii: utils.fromAscii,
 
     /// @returns decimal representaton of hex value prefixed by 0x
     toDecimal: function (val) {
@@ -1096,29 +1573,7 @@ var web3 = {
     },
 
     /// used to transform value/string to eth string
-    /// TODO: use BigNumber.js to parse int
-    toEth: function(str) {
-        var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
-        var unit = 0;
-        var units = ETH_UNITS;
-        while (val > 3000 && unit < units.length - 1)
-        {
-            val /= 1000;
-            unit++;
-        }
-        var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);
-        var replaceFunction = function($0, $1, $2) {
-            return $1 + ',' + $2;
-        };
-
-        while (true) {
-            var o = s;
-            s = s.replace(/(\d)(\d\d\d[\.\,])/, replaceFunction);
-            if (o === s)
-                break;
-        }
-        return s + ' ' + units[unit];
-    },
+    toEth: utils.toEth,
 
     /// eth object prototype
     eth: {
@@ -1131,8 +1586,15 @@ var web3 = {
                 return ret;
             };
         },
-        watch: function (params) {
-            return new web3.filter(params, ethWatch);
+
+        /// @param filter may be a string, object or event
+        /// @param indexed is optional, this is an object with optional event indexed params
+        /// @param options is optional, this is an object with optional event options ('max'...)
+        watch: function (filter, indexed, options) {
+            if (filter._isEvent) {
+                return filter(indexed, options);
+            }
+            return new web3.filter(filter, ethWatch);
         }
     },
 
@@ -1141,15 +1603,12 @@ var web3 = {
 
     /// shh object prototype
     shh: {
-        watch: function (params) {
-            return new web3.filter(params, shhWatch);
+        
+        /// @param filter may be a string, object or event
+        watch: function (filter, indexed) {
+            return new web3.filter(filter, shhWatch);
         }
     },
-
-    /// @returns true if provider is installed
-    haveProvider: function() {
-        return !!web3.provider.provider;
-    }
 };
 
 /// setups all api methods
@@ -1172,14 +1631,13 @@ var shhWatch = {
 setupMethods(shhWatch, shhWatchMethods());
 
 web3.setProvider = function(provider) {
-    //provider.onmessage = messageHandler; // there will be no async calls, to remove
     web3.provider.set(provider);
 };
 
 module.exports = web3;
 
 
-},{}],"web3":[function(require,module,exports){
+},{"./utils":12}],"web3":[function(require,module,exports){
 var web3 = require('./lib/web3');
 var ProviderManager = require('./lib/providermanager');
 web3.provider = new ProviderManager();
@@ -1192,7 +1650,7 @@ web3.abi = require('./lib/abi');
 
 module.exports = web3;
 
-},{"./lib/abi":1,"./lib/contract":2,"./lib/filter":3,"./lib/httpsync":4,"./lib/providermanager":5,"./lib/qtsync":6,"./lib/web3":7}]},{},["web3"])
+},{"./lib/abi":1,"./lib/contract":3,"./lib/filter":5,"./lib/httpsync":7,"./lib/providermanager":9,"./lib/qtsync":10,"./lib/web3":13}]},{},["web3"])
 
 
 //# sourceMappingURL=ethereum.js.map