Merge commit '1a6dbeff6e86d65cae6d7db366cbaa4182eaff7f' into ethereumjs

Conflicts:
	libjsqrc/ethereumjs/dist/ethereum.js
	libjsqrc/ethereumjs/dist/ethereum.js.map
	libjsqrc/ethereumjs/dist/ethereum.min.js
	libjsqrc/ethereumjs/lib/abi.js

22 files changed, 1541 insertions, 597 deletions

diff --git a/README.md b/README.md
index f18d382bd..bb6967ce0 100644
--- a/README.md
+++ b/README.md
@@ -66,16 +66,16 @@ sudo apt-get install npm
 sudo apt-get install nodejs-legacy
 ```
 
-## Building
+### Building (gulp)
 
-```bash (gulp)
+```bash
 npm run-script build
 ```
 
 
-### Testing
+### Testing (mocha)
 
-```bash (mocha)
+```bash
 npm test
 ```
 
diff --git a/dist/ethereum.js b/dist/ethereum.js
index a422171be..f4e0e6eac 100644
--- a/dist/ethereum.js
+++ b/dist/ethereum.js
@@ -36,6 +36,10 @@ var decToHex = function (dec) {
     return parseInt(dec).toString(16);
 };
 
+/// 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;
@@ -45,106 +49,96 @@ var findIndex = function (array, callback) {
     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;
     });
 };
 
-var padLeft = function (string, chars) {
-    return new Array(chars - string.length + 1).join("0") + string;
+/// @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;
 };
 
-var calcBitPadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    return parseInt(value) / 8;
-};
-
-var calcBytePadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    return parseInt(value);
+/// @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;
+    };
 };
 
-var calcRealPadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    var sizes = value.split('x');
-    for (var padding = 0, i = 0; i < sizes; i++) {
-        padding += (sizes[i] / 8);
-    }
-    return padding;
+/// @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 setupInputTypes = function () {
     
-    // convert from int, decimal-string, prefixed hex string whatever into a bare hex string.
-    var formatStandard = function (value) {
-        if (typeof value === "number")
-            return value.toString(16);
-        else if (typeof value === "string" && value.indexOf('0x') === 0)
-            return value.substr(2);
-        else if (typeof value === "string")
-            return web3.toHex(value);
-        else
-            return (+value).toString(16);
-    };
-
-    var prefixedType = function (prefix, calcPadding) {
-        return function (type, value) {
-            var expected = prefix;
-            if (type.indexOf(expected) !== 0) {
-                return false;
+    /// Formats input value to byte representation of int
+    /// @returns right-aligned byte representation of int
+    var formatInt = function (value) {
+        var padding = 32 * 2;
+        if (typeof value === 'number') {
+            if (value < 0) {
+                
+                // two's complement
+                // TODO: fix big numbers support
+                value = ((value) >>> 0).toString(16);
+                return padLeft(value, padding, 'f');
             }
+            value = value.toString(16);
 
-            var padding = calcPadding(type, expected);
-            if (padding > 32)
-                return false;   // not allowed to be so big.
-            padding = 32;   // override as per the new ABI.
-
-            if (prefix === "string")
-                return web3.fromAscii(value, padding).substr(2);
-            return padLeft(formatStandard(value), padding * 2);
-        };
+        }
+        else if (value.indexOf('0x') === 0)
+            value = value.substr(2);
+        else if (typeof value === 'string')
+            value = value.toHex(value);
+        else
+            value = (+value).toString(16);
+        return padLeft(value, padding);
     };
 
-    var namedType = function (name, padding, formatter) {
-        return function (type, value) {
-            if (type !== name) {
-                return false;
-            }
-
-            padding = 32;   //override as per the new ABI.
-
-            return padLeft(formatter ? formatter(value) : value, padding * 2);
-        };
+    /// Formats input value to byte representation of string
+    /// @returns left-algined byte representation of string
+    var formatString = function (value) {
+        return web3.fromAscii(value, 32).substr(2);
     };
 
+    /// Formats input value to byte representation of bool
+    /// @returns right-aligned byte representation bool
     var formatBool = function (value) {
-        return value ? '01' : '00';
+        return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');
     };
 
     return [
-        prefixedType('uint', calcBitPadding),
-        prefixedType('int', calcBitPadding),
-        prefixedType('hash', calcBitPadding),
-        prefixedType('string', calcBytePadding),
-        prefixedType('real', calcRealPadding),
-        prefixedType('ureal', calcRealPadding),
-        namedType('address', 20, formatStandard),
-        namedType('bool', 1, formatBool),
+        { type: prefixedType('uint'), format: formatInt },
+        { type: prefixedType('int'), format: formatInt },
+        { type: prefixedType('hash'), format: formatInt },
+        { type: prefixedType('string'), format: formatString }, 
+        { type: prefixedType('real'), format: formatInt },
+        { type: prefixedType('ureal'), format: formatInt },
+        { type: namedType('address'), format: formatInt },
+        { type: namedType('bool'), format: formatBool }
     ];
 };
 
 var inputTypes = setupInputTypes();
 
+/// Formats input params to bytes
+/// @param contract json abi
+/// @param name of the method that we want to use
+/// @param array of params that will be formatted to bytes
+/// @returns bytes representation of input params
 var toAbiInput = function (json, methodName, params) {
     var bytes = "";
     var index = findMethodIndex(json, methodName);
@@ -154,74 +148,72 @@ var toAbiInput = function (json, methodName, params) {
     }
 
     var method = json[index];
+    var padding = 32 * 2;
 
     for (var i = 0; i < method.inputs.length; i++) {
-        var found = false;
-        for (var j = 0; j < inputTypes.length && !found; j++) {
-            found = inputTypes[j](method.inputs[i].type, params[i]);
+        var typeMatch = false;
+        for (var j = 0; j < inputTypes.length && !typeMatch; j++) {
+            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);
         }
-        if (!found) {
-            console.error('unsupported json type: ' + method.inputs[i].type);
+        if (!typeMatch) {
+            console.error('input parser does not support type: ' + method.inputs[i].type);
         }
-        bytes += found;
+
+        var formatter = inputTypes[j - 1].format;
+        bytes += (formatter ? formatter(params[i]) : params[i]);
     }
     return bytes;
 };
 
+/// Setups output formaters for solidity types
+/// @returns an array of output formatters
 var setupOutputTypes = function () {
 
-    var prefixedType = function (prefix, calcPadding) {
-        return function (type) {
-            var expected = prefix;
-            if (type.indexOf(expected) !== 0) {
-                return -1;
-            }
-
-            var padding = calcPadding(type, expected);
-            if (padding > 32)
-                return -1;   // not allowed to be so big.
-            padding = 32;  // override as per the new ABI.
-            return padding * 2;
-        };
-    };
-
-    var namedType = function (name, padding) {
-        return function (type) {
-            padding = 32;  // override as per the new ABI.
-            return name === type ? padding * 2 : -1;
-        };
-    };
-
+    /// Formats input right-aligned input bytes to int
+    /// @returns right-aligned input bytes formatted to int
     var formatInt = function (value) {
         return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);
     };
 
+    /// @returns right-aligned input bytes formatted to hex
     var formatHash = function (value) {
         return "0x" + value;
     };
 
+    /// @returns right-aligned input bytes formatted to bool
     var formatBool = function (value) {
-        return value === '1' ? true : false;
+        return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;
     };
 
+    /// @returns left-aligned input bytes formatted to ascii string
     var formatString = function (value) {
         return web3.toAscii(value);
     };
 
+    /// @returns right-aligned input bytes formatted to address
+    var formatAddress = function (value) {
+        return "0x" + value.slice(value.length - 40, value.length);
+    };
+
     return [
-    { padding: prefixedType('uint', calcBitPadding), format: formatInt },
-    { padding: prefixedType('int', calcBitPadding), format: formatInt },
-    { padding: prefixedType('hash', calcBitPadding), format: formatHash },
-    { padding: prefixedType('string', calcBytePadding), format: formatString },
-    { padding: prefixedType('real', calcRealPadding), format: formatInt },
-    { padding: prefixedType('ureal', calcRealPadding), format: formatInt },
-    { padding: namedType('address', 20) },
-    { padding: namedType('bool', 1), format: formatBool }
+        { type: prefixedType('uint'), format: formatInt },
+        { type: prefixedType('int'), format: formatInt },
+        { type: prefixedType('hash'), format: formatHash },
+        { type: prefixedType('string'), format: formatString },
+        { type: prefixedType('real'), format: formatInt },
+        { type: prefixedType('ureal'), format: formatInt },
+        { type: namedType('address'), format: formatAddress },
+        { type: namedType('bool'), format: formatBool }
     ];
 };
 
 var outputTypes = setupOutputTypes();
 
+/// Formats output bytes back to param list
+/// @param contract json abi
+/// @param name of the method that we want to use
+/// @param bytes representtion of output 
+/// @returns array of output params 
 var fromAbiOutput = function (json, methodName, output) {
     var index = findMethodIndex(json, methodName);
 
@@ -233,14 +225,16 @@ var fromAbiOutput = function (json, methodName, output) {
 
     var result = [];
     var method = json[index];
+    var padding = 32 * 2;
     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);
+        var typeMatch = false;
+        for (var j = 0; j < outputTypes.length && !typeMatch; j++) {
+            typeMatch = outputTypes[j].type(method.outputs[i].type);
         }
 
-        if (padding === -1) {
+        if (!typeMatch) {
             // not found output parsing
+            console.error('output parser does not support type: ' + method.outputs[i].type);
             continue;
         }
         var res = output.slice(0, padding);
@@ -252,6 +246,8 @@ var fromAbiOutput = function (json, methodName, output) {
     return result;
 };
 
+/// @param json abi for contract
+/// @returns input parser object for given json abi
 var inputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
@@ -264,6 +260,8 @@ var inputParser = function (json) {
     return parser;
 };
 
+/// @param json abi for contract
+/// @returns output parser for given json abi
 var outputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
@@ -275,6 +273,9 @@ var outputParser = function (json) {
     return parser;
 };
 
+/// @param json abi for contract
+/// @param method name for which we want to get method signature
+/// @returns (promise) contract method signature for method with given name
 var methodSignature = function (json, name) {
     var method = json[findMethodIndex(json, name)];
     var result = name + '(';
@@ -330,6 +331,16 @@ if ("build" !== 'build') {/*
     var web3 = require('./web3'); // jshint ignore:line
 */}
 
+/**
+ * AutoProvider object prototype is implementing 'provider protocol'
+ * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)
+ * First it checkes if we are ethereum browser (if navigator.qt object is available)
+ * if yes, we are using QtProvider
+ * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)
+ * if it's not possible, we are using httprpc provider (http://localhost:8080)
+ * The constructor allows you to specify uris on which we are trying to connect over http or websockets
+ * You can do that by passing objects with fields httrpc and websockets
+ */
 var AutoProvider = function (userOptions) {
     if (web3.haveProvider()) {
         return;
@@ -378,6 +389,8 @@ var AutoProvider = function (userOptions) {
     };
 };
 
+/// Sends message forward to the provider, that is being used
+/// if provider is not yet set, enqueues the message
 AutoProvider.prototype.send = function (payload) {
     if (this.provider) {
         this.provider.send(payload);
@@ -386,6 +399,7 @@ AutoProvider.prototype.send = function (payload) {
     this.sendQueue.push(payload);
 };
 
+/// On incoming message sends the message to the provider that is currently being used
 Object.defineProperty(AutoProvider.prototype, 'onmessage', {
     set: function (handler) {
         if (this.provider) {
@@ -428,9 +442,29 @@ if ("build" !== 'build') {/*
 
 var abi = require('./abi');
 
-// method signature length in bytes
+/// method signature length in bytes
 var ETH_METHOD_SIGNATURE_LENGTH = 4;
 
+/**
+ * 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').call(); // myMethod call
+ * myContract.myMethod('this is test string param for transact').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) {
     var inputParser = abi.inputParser(desc);
     var outputParser = abi.outputParser(desc);
@@ -472,6 +506,7 @@ var contract = function (address, desc) {
 
 module.exports = contract;
 
+
 },{"./abi":1}],4:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
@@ -489,6 +524,97 @@ module.exports = contract;
     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 filter.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: is these line is supposed to be here? 
+if ("build" !== 'build') {/*
+    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
+var 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);
+    });
+};
+
+/// alias for changed*
+Filter.prototype.arrived = function(callback) {
+    this.changed(callback);
+};
+
+/// gets called when there is new eth/shh message
+Filter.prototype.changed = function(callback) {
+    var self = this;
+    this.promise.then(function(id) {
+        self.callbacks.push(callback);
+    });
+};
+
+/// trigger calling new message from people
+Filter.prototype.trigger = function(messages) {
+    for(var i = 0; i < this.callbacks.length; i++) {
+        this.callbacks[i].call(this, messages);
+    }
+};
+
+/// should be called to uninstall current filter
+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);
+    });
+};
+
+/// should be called to manually trigger getting latest messages from the client
+Filter.prototype.messages = function() {
+    var self = this;
+    return this.promise.then(function (id) {
+        return self.impl.getMessages(id);
+    });
+};
+
+/// alias for messages
+Filter.prototype.logs = function () {
+    return this.messages();
+};
+
+module.exports = Filter;
+
+},{}],5:[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 httprpc.js
  * @authors:
  *   Marek Kotewicz <marek@ethdev.com>
@@ -501,11 +627,21 @@ if ("build" !== 'build') {/*
     var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
 */}
 
+/**
+ * HttpRpcProvider object prototype is implementing 'provider protocol'
+ * Should be used when we want to connect to ethereum backend over http && jsonrpc
+ * It's compatible with cpp client
+ * The contructor allows to specify host uri
+ * This provider is using in-browser polling mechanism
+ */
 var HttpRpcProvider = function (host) {
     this.handlers = [];
     this.host = host;
 };
 
+/// Transforms inner message to proper jsonrpc object
+/// @param inner message object
+/// @returns jsonrpc object
 function formatJsonRpcObject(object) {
     return {
         jsonrpc: '2.0',
@@ -515,6 +651,9 @@ function formatJsonRpcObject(object) {
     };
 }
 
+/// Transforms jsonrpc object to inner message
+/// @param incoming jsonrpc message 
+/// @returns inner message object
 function formatJsonRpcMessage(message) {
     var object = JSON.parse(message);
 
@@ -525,6 +664,10 @@ function formatJsonRpcMessage(message) {
     };
 }
 
+/// Prototype object method 
+/// Asynchronously sends request to server
+/// @param payload is inner message object
+/// @param cb is callback which is being called when response is comes back
 HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
     var data = formatJsonRpcObject(payload);
 
@@ -538,6 +681,11 @@ HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to server
+/// Asynchronous
+/// On response it passes message to handlers
+/// @param payload is inner message object
 HttpRpcProvider.prototype.send = function (payload) {
     var self = this;
     this.sendRequest(payload, function (request) {
@@ -547,6 +695,13 @@ HttpRpcProvider.prototype.send = function (payload) {
     });
 };
 
+/// Prototype object method
+/// Should be called only for polling requests
+/// Asynchronous
+/// On response it passege message to handlers, but only if message's result is true or not empty array
+/// Otherwise response is being silently ignored
+/// @param payload is inner message object
+/// @id is id of poll that we are calling
 HttpRpcProvider.prototype.poll = function (payload, id) {
     var self = this;
     this.sendRequest(payload, function (request) {
@@ -560,6 +715,8 @@ HttpRpcProvider.prototype.poll = function (payload, id) {
     });
 };
 
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
     set: function (handler) {
         this.handlers.push(handler);
@@ -568,7 +725,132 @@ Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
 
 module.exports = HttpRpcProvider;
 
-},{}],5:[function(require,module,exports){
+
+},{}],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 providermanager.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: is these line is supposed to be here? 
+if ("build" !== 'build') {/*
+    var web3 = require('./web3'); // jshint ignore:line
+*/}
+
+/**
+ * Provider manager object prototype
+ * It's responsible for passing messages to providers
+ * If no provider is set it's responsible for queuing requests
+ * It's also responsible for polling the ethereum node for incoming messages
+ * Default poll timeout is 12 seconds
+ * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling,
+ * and provider manager polling mechanism is not used
+ */
+var ProviderManager = function() {
+    this.queued = [];
+    this.polls = [];
+    this.ready = false;
+    this.provider = undefined;
+    this.id = 1;
+
+    var self = this;
+    var poll = function () {
+        if (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, 12000);
+    };
+    poll();
+};
+
+/// sends outgoing requests, if provider is not available, enqueue the request
+ProviderManager.prototype.send = function(data, cb) {
+    data._id = this.id;
+    if (cb) {
+        web3._callbacks[data._id] = cb;
+    }
+
+    data.args = data.args || [];
+    this.id++;
+
+    if(this.provider !== undefined) {
+        this.provider.send(data);
+    } else {
+        console.warn("provider is not set");
+        this.queued.push(data);
+    }
+};
+
+/// setups provider, which will be used for sending messages
+ProviderManager.prototype.set = function(provider) {
+    if(this.provider !== undefined && this.provider.unload !== undefined) {
+        this.provider.unload();
+    }
+
+    this.provider = provider;
+    this.ready = true;
+};
+
+/// resends queued messages
+ProviderManager.prototype.sendQueued = function() {
+    for(var i = 0; this.queued.length; i++) {
+        // Resend
+        this.send(this.queued[i]);
+    }
+};
+
+/// @returns true if the provider i properly set
+ProviderManager.prototype.installed = function() {
+    return this.provider !== undefined;
+};
+
+/// this method is only used, when we do not have native qt bindings and have to do polling on our own
+/// should be callled, on start watching for eth/shh changes
+ProviderManager.prototype.startPolling = function (data, pollId) {
+    if (!this.provider || !this.provider.poll) {
+        return;
+    }
+    this.polls.push({data: data, id: pollId});
+};
+
+/// should be called to stop polling for certain watch changes
+ProviderManager.prototype.stopPolling = function (pollId) {
+    for (var i = this.polls.length; i--;) {
+        var poll = this.polls[i];
+        if (poll.id === pollId) {
+            this.polls.splice(i, 1);
+        }
+    }
+};
+
+module.exports = ProviderManager;
+
+
+},{}],7:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -592,6 +874,11 @@ module.exports = HttpRpcProvider;
  * @date 2014
  */
 
+/**
+ * QtProvider object prototype is implementing 'provider protocol'
+ * Should be used inside ethereum browser. It's compatible with cpp and go clients.
+ * It uses navigator.qt object to pass the messages to native bindings
+ */
 var QtProvider = function() {
     this.handlers = [];
 
@@ -603,10 +890,17 @@ var QtProvider = function() {
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to native bindings
+/// Asynchronous
+/// Response will be received by navigator.qt.onmessage method and passed to handlers
+/// @param payload is inner message object
 QtProvider.prototype.send = function(payload) {
     navigator.qt.postMessage(JSON.stringify(payload));
 };
 
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(QtProvider.prototype, "onmessage", {
     set: function(handler) {
         this.handlers.push(handler);
@@ -615,7 +909,7 @@ Object.defineProperty(QtProvider.prototype, "onmessage", {
 
 module.exports = QtProvider;
 
-},{}],6:[function(require,module,exports){
+},{}],8:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -632,7 +926,7 @@ module.exports = QtProvider;
     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 main.js
+/** @file web3.js
  * @authors:
  *   Jeffrey Wilcke <jeff@ethdev.com>
  *   Marek Kotewicz <marek@ethdev.com>
@@ -641,6 +935,12 @@ module.exports = QtProvider;
  * @date 2014
  */
 
+var Filter = require('./filter');
+var ProviderManager = require('./providermanager');
+
+/// Recursively resolves all promises in given object and replaces the resolved values with promises
+/// @param any object/array/promise/anything else..
+/// @returns (resolves) object with replaced promises with their result 
 function flattenPromise (obj) {
     if (obj instanceof Promise) {
         return Promise.resolve(obj);
@@ -680,12 +980,14 @@ function flattenPromise (obj) {
     return Promise.resolve(obj);
 }
 
+/// @returns an array of objects describing web3 api methods
 var web3Methods = function () {
     return [
     { name: 'sha3', call: 'web3_sha3' }
     ];
 };
 
+/// @returns an array of objects describing web3.eth api methods
 var ethMethods = function () {
     var blockCall = function (args) {
         return typeof args[0] === "string" ? "eth_blockByHash" : "eth_blockByNumber";
@@ -719,6 +1021,7 @@ var ethMethods = function () {
     return methods;
 };
 
+/// @returns an array of objects describing web3.eth api properties
 var ethProperties = function () {
     return [
     { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },
@@ -733,6 +1036,7 @@ var ethProperties = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.db api methods
 var dbMethods = function () {
     return [
     { name: 'put', call: 'db_put' },
@@ -742,6 +1046,7 @@ var dbMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.shh api methods
 var shhMethods = function () {
     return [
     { name: 'post', call: 'shh_post' },
@@ -752,6 +1057,7 @@ var shhMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.eth.watch api methods
 var ethWatchMethods = function () {
     var newFilter = function (args) {
         return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';
@@ -764,6 +1070,7 @@ var ethWatchMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.shh.watch api methods
 var shhWatchMethods = function () {
     return [
     { name: 'newFilter', call: 'shh_newFilter' },
@@ -772,6 +1079,8 @@ var shhWatchMethods = function () {
     ];
 };
 
+/// creates methods in a given object based on method description on input
+/// setups api calls for these methods
 var setupMethods = function (obj, methods) {
     methods.forEach(function (method) {
         obj[method.name] = function () {
@@ -795,6 +1104,8 @@ var setupMethods = function (obj, methods) {
     });
 };
 
+/// creates properties in a given object based on properties description on input
+/// setups api calls for these properties
 var setupProperties = function (obj, properties) {
     properties.forEach(function (property) {
         var proto = {};
@@ -839,7 +1150,7 @@ var decToHex = function (dec) {
     return parseInt(dec).toString(16);
 };
 
-
+/// setups web3 object, and it's in-browser executed methods
 var web3 = {
     _callbacks: {},
     _events: {},
@@ -855,6 +1166,7 @@ var web3 = {
         return hex;
     },
 
+    /// @returns ascii string representation of hex value prefixed with 0x
     toAscii: function(hex) {
         // Find termination
         var str = "";
@@ -862,17 +1174,18 @@ var web3 = {
         if (hex.substring(0, 2) === '0x')
             i = 2;
         for(; i < l; i+=2) {
-            var code = hex.charCodeAt(i);
+            var code = parseInt(hex.substr(i, 2), 16);
             if(code === 0) {
                 break;
             }
 
-            str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
+            str += String.fromCharCode(code);
         }
 
         return str;
     },
 
+    /// @returns hex representation (prefixed by 0x) of ascii string
     fromAscii: function(str, pad) {
         pad = pad === undefined ? 0 : pad;
         var hex = this.toHex(str);
@@ -881,14 +1194,17 @@ var web3 = {
         return "0x" + hex;
     },
 
+    /// @returns decimal representaton of hex value prefixed by 0x
     toDecimal: function (val) {
         return hexToDec(val.substring(2));
     },
 
+    /// @returns hex representation (prefixed by 0x) of decimal value
     fromDecimal: function (val) {
         return "0x" + decToHex(val);
     },
 
+    /// used to transform value/string to eth string
     toEth: function(str) {
         var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
         var unit = 0;
@@ -912,24 +1228,24 @@ var web3 = {
         return s + ' ' + units[unit];
     },
 
+    /// eth object prototype
     eth: {
-        prototype: Object(), // jshint ignore:line
         watch: function (params) {
             return new Filter(params, ethWatch);
         }
     },
 
-    db: {
-        prototype: Object() // jshint ignore:line
-    },
+    /// db object prototype
+    db: {},
 
+    /// shh object prototype
     shh: {
-        prototype: Object(), // jshint ignore:line
         watch: function (params) {
             return new Filter(params, shhWatch);
         }
     },
 
+    /// used by filter to register callback with given id
     on: function(event, id, cb) {
         if(web3._events[event] === undefined) {
             web3._events[event] = {};
@@ -939,6 +1255,7 @@ var web3 = {
         return this;
     },
 
+    /// used by filter to unregister callback with given id
     off: function(event, id) {
         if(web3._events[event] !== undefined) {
             delete web3._events[event][id];
@@ -947,6 +1264,7 @@ var web3 = {
         return this;
     },
 
+    /// used to trigger callback registered by filter
     trigger: function(event, id, data) {
         var callbacks = web3._events[event];
         if (!callbacks || !callbacks[id]) {
@@ -954,9 +1272,15 @@ var web3 = {
         }
         var cb = callbacks[id];
         cb(data);
+    },
+
+    /// @returns true if provider is installed
+    haveProvider: function() {
+        return !!web3.provider.provider;
     }
 };
 
+/// setups all api methods
 setupMethods(web3, web3Methods());
 setupMethods(web3.eth, ethMethods());
 setupProperties(web3.eth, ethProperties());
@@ -966,85 +1290,14 @@ setupMethods(web3.shh, shhMethods());
 var ethWatch = {
     changed: 'eth_changed'
 };
+
 setupMethods(ethWatch, ethWatchMethods());
+
 var shhWatch = {
     changed: 'shh_changed'
 };
-setupMethods(shhWatch, shhWatchMethods());
-
-var ProviderManager = function() {
-    this.queued = [];
-    this.polls = [];
-    this.ready = false;
-    this.provider = undefined;
-    this.id = 1;
-
-    var self = this;
-    var poll = function () {
-        if (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, 12000);
-    };
-    poll();
-};
-
-ProviderManager.prototype.send = function(data, cb) {
-    data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
-
-    data.args = data.args || [];
-    this.id++;
-
-    if(this.provider !== undefined) {
-        this.provider.send(data);
-    } else {
-        console.warn("provider is not set");
-        this.queued.push(data);
-    }
-};
-
-ProviderManager.prototype.set = function(provider) {
-    if(this.provider !== undefined && this.provider.unload !== undefined) {
-        this.provider.unload();
-    }
-
-    this.provider = provider;
-    this.ready = true;
-};
-
-ProviderManager.prototype.sendQueued = function() {
-    for(var i = 0; this.queued.length; i++) {
-        // Resend
-        this.send(this.queued[i]);
-    }
-};
-
-ProviderManager.prototype.installed = function() {
-    return this.provider !== undefined;
-};
-
-ProviderManager.prototype.startPolling = function (data, pollId) {
-    if (!this.provider || !this.provider.poll) {
-        return;
-    }
-    this.polls.push({data: data, id: pollId});
-};
 
-ProviderManager.prototype.stopPolling = function (pollId) {
-    for (var i = this.polls.length; i--;) {
-        var poll = this.polls[i];
-        if (poll.id === pollId) {
-            this.polls.splice(i, 1);
-        }
-    }
-};
+setupMethods(shhWatch, shhWatchMethods());
 
 web3.provider = new ProviderManager();
 
@@ -1054,60 +1307,7 @@ web3.setProvider = function(provider) {
     web3.provider.sendQueued();
 };
 
-web3.haveProvider = function() {
-    return !!web3.provider.provider;
-};
-
-var 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);
-    });
-};
-
-Filter.prototype.logs = function () {
-    return this.messages();
-};
-
+/// callled when there is new incoming message
 function messageHandler(data) {
     if(data._event !== undefined) {
         web3.trigger(data._event, data._id, data.data);
@@ -1126,7 +1326,7 @@ function messageHandler(data) {
 if (typeof(module) !== "undefined")
     module.exports = web3;
 
-},{}],7:[function(require,module,exports){
+},{"./filter":4,"./providermanager":6}],9:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
 
@@ -1156,9 +1356,17 @@ if ("build" !== 'build') {/*
     var WebSocket = require('ws'); // jshint ignore:line
 */}
 
+/**
+ * WebSocketProvider object prototype is implementing 'provider protocol'
+ * Should be used when we want to connect to ethereum backend over websockets
+ * It's compatible with go client
+ * The constructor allows to specify host uri
+ */
 var WebSocketProvider = function(host) {
+
     // onmessage handlers
     this.handlers = [];
+
     // queue will be filled with messages if send is invoked before the ws is ready
     this.queued = [];
     this.ready = false;
@@ -1175,15 +1383,20 @@ var WebSocketProvider = function(host) {
     this.ws.onopen = function() {
         self.ready = true;
 
-        for(var i = 0; i < self.queued.length; i++) {
+        for (var i = 0; i < self.queued.length; i++) {
             // Resend
             self.send(self.queued[i]);
         }
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to server
+/// Asynchronous, it's using websockets
+/// Response for the call will be received by ws.onmessage
+/// @param payload is inner message object
 WebSocketProvider.prototype.send = function(payload) {
-    if(this.ready) {
+    if (this.ready) {
         var data = JSON.stringify(payload);
 
         this.ws.send(data);
@@ -1192,13 +1405,20 @@ WebSocketProvider.prototype.send = function(payload) {
     }
 };
 
+/// Prototype object method
+/// Should be called to add handlers
 WebSocketProvider.prototype.onMessage = function(handler) {
     this.handlers.push(handler);
 };
 
+/// Prototype object method
+/// Should be called to close websockets connection
 WebSocketProvider.prototype.unload = function() {
     this.ws.close();
 };
+
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
     set: function(provider) { this.onMessage(provider); }
 });
@@ -1212,11 +1432,11 @@ web3.providers.WebSocketProvider = require('./lib/websocket');
 web3.providers.HttpRpcProvider = require('./lib/httprpc');
 web3.providers.QtProvider = require('./lib/qt');
 web3.providers.AutoProvider = require('./lib/autoprovider');
-web3.contract = require('./lib/contract');
+web3.eth.contract = require('./lib/contract');
 
 module.exports = web3;
 
-},{"./lib/autoprovider":2,"./lib/contract":3,"./lib/httprpc":4,"./lib/qt":5,"./lib/web3":6,"./lib/websocket":7}]},{},["web3"])
+},{"./lib/autoprovider":2,"./lib/contract":3,"./lib/httprpc":5,"./lib/qt":7,"./lib/web3":8,"./lib/websocket":9}]},{},["web3"])
 
 
 //# sourceMappingURL=ethereum.js.map
\ No newline at end of file
diff --git a/dist/ethereum.js.map b/dist/ethereum.js.map
index 4a38cddfd..fd3768b15 100644
--- a/dist/ethereum.js.map
+++ b/dist/ethereum.js.map
@@ -5,25 +5,29 @@
     "lib/abi.js",
     "lib/autoprovider.js",
     "lib/contract.js",
+    "lib/filter.js",
     "lib/httprpc.js",
+    "lib/providermanager.js",
     "lib/qt.js",
     "lib/web3.js",
     "lib/websocket.js",
     "index.js"
   ],
   "names": [],
-  "mappings": 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     "(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})",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n// TODO: make these be actually accurate instead of falling back onto JS's doubles.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\nvar padLeft = function (string, chars) {\n    return new Array(chars - string.length + 1).join(\"0\") + string;\n};\n\nvar calcBitPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value) / 8;\n};\n\nvar calcBytePadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value);\n};\n\nvar calcRealPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    var sizes = value.split('x');\n    for (var padding = 0, i = 0; i < sizes; i++) {\n        padding += (sizes[i] / 8);\n    }\n    return padding;\n};\n\nvar setupInputTypes = function () {\n    \n    // convert from int, decimal-string, prefixed hex string whatever into a bare hex string.\n    var formatStandard = function (value) {\n        if (typeof value === \"number\")\n            return value.toString(16);\n        else if (typeof value === \"string\" && value.indexOf('0x') === 0)\n            return value.substr(2);\n        else if (typeof value === \"string\")\n            return web3.toHex(value);\n        else\n            return (+value).toString(16);\n    };\n\n    var prefixedType = function (prefix, calcPadding) {\n        return function (type, value) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return false;\n            }\n\n            var padding = calcPadding(type, expected);\n            if (padding > 32)\n                return false;   // not allowed to be so big.\n            padding = 32;   // override as per the new ABI.\n\n            if (prefix === \"string\")\n                return web3.fromAscii(value, padding).substr(2);\n            return padLeft(formatStandard(value), padding * 2);\n        };\n    };\n\n    var namedType = function (name, padding, formatter) {\n        return function (type, value) {\n            if (type !== name) {\n                return false;\n            }\n\n            padding = 32;   //override as per the new ABI.\n\n            return padLeft(formatter ? formatter(value) : value, padding * 2);\n        };\n    };\n\n    var formatBool = function (value) {\n        return value ? '01' : '00';\n    };\n\n    return [\n        prefixedType('uint', calcBitPadding),\n        prefixedType('int', calcBitPadding),\n        prefixedType('hash', calcBitPadding),\n        prefixedType('string', calcBytePadding),\n        prefixedType('real', calcRealPadding),\n        prefixedType('ureal', calcRealPadding),\n        namedType('address', 20, formatStandard),\n        namedType('bool', 1, formatBool),\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n\n    for (var i = 0; i < method.inputs.length; i++) {\n        var found = false;\n        for (var j = 0; j < inputTypes.length && !found; j++) {\n            found = inputTypes[j](method.inputs[i].type, params[i]);\n        }\n        if (!found) {\n            console.error('unsupported json type: ' + method.inputs[i].type);\n        }\n        bytes += found;\n    }\n    return bytes;\n};\n\nvar setupOutputTypes = function () {\n\n    var prefixedType = function (prefix, calcPadding) {\n        return function (type) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return -1;\n            }\n\n            var padding = calcPadding(type, expected);\n            if (padding > 32)\n                return -1;   // not allowed to be so big.\n            padding = 32;  // override as per the new ABI.\n            return padding * 2;\n        };\n    };\n\n    var namedType = function (name, padding) {\n        return function (type) {\n            padding = 32;  // override as per the new ABI.\n            return name === type ? padding * 2 : -1;\n        };\n    };\n\n    var formatInt = function (value) {\n        return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);\n    };\n\n    var formatHash = function (value) {\n        return \"0x\" + value;\n    };\n\n    var formatBool = function (value) {\n        return value === '1' ? true : false;\n    };\n\n    var formatString = function (value) {\n        return web3.toAscii(value);\n    };\n\n    return [\n    { padding: prefixedType('uint', calcBitPadding), format: formatInt },\n    { padding: prefixedType('int', calcBitPadding), format: formatInt },\n    { padding: prefixedType('hash', calcBitPadding), format: formatHash },\n    { padding: prefixedType('string', calcBytePadding), format: formatString },\n    { padding: prefixedType('real', calcRealPadding), format: formatInt },\n    { padding: prefixedType('ureal', calcRealPadding), format: formatInt },\n    { padding: namedType('address', 20) },\n    { padding: namedType('bool', 1), format: formatBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    for (var i = 0; i < method.outputs.length; i++) {\n        var padding = -1;\n        for (var j = 0; j < outputTypes.length && padding === -1; j++) {\n            padding = outputTypes[j].padding(method.outputs[i].type);\n        }\n\n        if (padding === -1) {\n            // not found output parsing\n            continue;\n        }\n        var res = output.slice(0, padding);\n        var formatter = outputTypes[j - 1].format;\n        result.push(formatter ? formatter(res) : (\"0x\" + res));\n        output = output.slice(padding);\n    }\n\n    return result;\n};\n\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n    });\n\n    return parser;\n};\n\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n    });\n\n    return parser;\n};\n\nvar methodSignature = function (json, name) {\n    var method = json[findMethodIndex(json, name)];\n    var result = name + '(';\n    var inputTypes = method.inputs.map(function (inp) {\n        return inp.type;\n    });\n    result += inputTypes.join(',');\n    result += ')';\n\n    return web3.sha3(web3.fromAscii(result));\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature\n};\n\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file autoprovider.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n/*\n * @brief if qt object is available, uses QtProvider,\n * if not tries to connect over websockets\n * if it fails, it uses HttpRpcProvider\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\nvar AutoProvider = function (userOptions) {\n    if (web3.haveProvider()) {\n        return;\n    }\n\n    // before we determine what provider we are, we have to cache request\n    this.sendQueue = [];\n    this.onmessageQueue = [];\n\n    if (navigator.qt) {\n        this.provider = new web3.providers.QtProvider();\n        return;\n    }\n\n    userOptions = userOptions || {};\n    var options = {\n        httprpc: userOptions.httprpc || 'http://localhost:8080',\n        websockets: userOptions.websockets || 'ws://localhost:40404/eth'\n    };\n\n    var self = this;\n    var closeWithSuccess = function (success) {\n        ws.close();\n        if (success) {\n            self.provider = new web3.providers.WebSocketProvider(options.websockets);\n        } else {\n            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);\n            self.poll = self.provider.poll.bind(self.provider);\n        }\n        self.sendQueue.forEach(function (payload) {\n            self.provider(payload);\n        });\n        self.onmessageQueue.forEach(function (handler) {\n            self.provider.onmessage = handler;\n        });\n    };\n\n    var ws = new WebSocket(options.websockets);\n\n    ws.onopen = function() {\n        closeWithSuccess(true);\n    };\n\n    ws.onerror = function() {\n        closeWithSuccess(false);\n    };\n};\n\nAutoProvider.prototype.send = function (payload) {\n    if (this.provider) {\n        this.provider.send(payload);\n        return;\n    }\n    this.sendQueue.push(payload);\n};\n\nObject.defineProperty(AutoProvider.prototype, 'onmessage', {\n    set: function (handler) {\n        if (this.provider) {\n            this.provider.onmessage = handler;\n            return;\n        }\n        this.onmessageQueue.push(handler);\n    }\n});\n\nmodule.exports = AutoProvider;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file contract.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\nvar abi = require('./abi');\n\n// method signature length in bytes\nvar ETH_METHOD_SIGNATURE_LENGTH = 4;\n\nvar contract = function (address, desc) {\n    var inputParser = abi.inputParser(desc);\n    var outputParser = abi.outputParser(desc);\n\n    var contract = {};\n\n    desc.forEach(function (method) {\n        contract[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            var parsed = inputParser[method.name].apply(null, params);\n\n            var onSuccess = function (result) {\n                return outputParser[method.name](result);\n            };\n\n            return {\n                call: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.call(extra).then(onSuccess);\n                    });\n                },\n                transact: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.transact(extra).then(onSuccess);\n                    });\n                }\n            };\n        };\n    });\n\n    return contract;\n};\n\nmodule.exports = contract;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file httprpc.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line\n*/}\n\nvar HttpRpcProvider = function (host) {\n    this.handlers = [];\n    this.host = host;\n};\n\nfunction formatJsonRpcObject(object) {\n    return {\n        jsonrpc: '2.0',\n        method: object.call,\n        params: object.args,\n        id: object._id\n    };\n}\n\nfunction formatJsonRpcMessage(message) {\n    var object = JSON.parse(message);\n\n    return {\n        _id: object.id,\n        data: object.result,\n        error: object.error\n    };\n}\n\nHttpRpcProvider.prototype.sendRequest = function (payload, cb) {\n    var data = formatJsonRpcObject(payload);\n\n    var request = new XMLHttpRequest();\n    request.open(\"POST\", this.host, true);\n    request.send(JSON.stringify(data));\n    request.onreadystatechange = function () {\n        if (request.readyState === 4 && cb) {\n            cb(request);\n        }\n    };\n};\n\nHttpRpcProvider.prototype.send = function (payload) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, formatJsonRpcMessage(request.responseText));\n        });\n    });\n};\n\nHttpRpcProvider.prototype.poll = function (payload, id) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        var parsed = JSON.parse(request.responseText);\n        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {\n            return;\n        }\n        self.handlers.forEach(function (handler) {\n            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});\n        });\n    });\n};\n\nObject.defineProperty(HttpRpcProvider.prototype, \"onmessage\", {\n    set: function (handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = HttpRpcProvider;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file qt.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\nvar QtProvider = function() {\n    this.handlers = [];\n\n    var self = this;\n    navigator.qt.onmessage = function (message) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, JSON.parse(message.data));\n        });\n    };\n};\n\nQtProvider.prototype.send = function(payload) {\n    navigator.qt.postMessage(JSON.stringify(payload));\n};\n\nObject.defineProperty(QtProvider.prototype, \"onmessage\", {\n    set: function(handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = QtProvider;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file main.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\nfunction flattenPromise (obj) {\n    if (obj instanceof Promise) {\n        return Promise.resolve(obj);\n    }\n\n    if (obj instanceof Array) {\n        return new Promise(function (resolve) {\n            var promises = obj.map(function (o) {\n                return flattenPromise(o);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < obj.length; i++) {\n                    obj[i] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    if (obj instanceof Object) {\n        return new Promise(function (resolve) {\n            var keys = Object.keys(obj);\n            var promises = keys.map(function (key) {\n                return flattenPromise(obj[key]);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < keys.length; i++) {\n                    obj[keys[i]] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    return Promise.resolve(obj);\n}\n\nvar web3Methods = function () {\n    return [\n    { name: 'sha3', call: 'web3_sha3' }\n    ];\n};\n\nvar ethMethods = function () {\n    var blockCall = function (args) {\n        return typeof args[0] === \"string\" ? \"eth_blockByHash\" : \"eth_blockByNumber\";\n    };\n\n    var transactionCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_transactionByHash' : 'eth_transactionByNumber';\n    };\n\n    var uncleCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_uncleByHash' : 'eth_uncleByNumber';\n    };\n\n    var methods = [\n    { name: 'balanceAt', call: 'eth_balanceAt' },\n    { name: 'stateAt', call: 'eth_stateAt' },\n    { name: 'storageAt', call: 'eth_storageAt' },\n    { name: 'countAt', call: 'eth_countAt'},\n    { name: 'codeAt', call: 'eth_codeAt' },\n    { name: 'transact', call: 'eth_transact' },\n    { name: 'call', call: 'eth_call' },\n    { name: 'block', call: blockCall },\n    { name: 'transaction', call: transactionCall },\n    { name: 'uncle', call: uncleCall },\n    { name: 'compilers', call: 'eth_compilers' },\n    { name: 'lll', call: 'eth_lll' },\n    { name: 'solidity', call: 'eth_solidity' },\n    { name: 'serpent', call: 'eth_serpent' },\n    { name: 'logs', call: 'eth_logs' }\n    ];\n    return methods;\n};\n\nvar ethProperties = function () {\n    return [\n    { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },\n    { name: 'listening', getter: 'eth_listening', setter: 'eth_setListening' },\n    { name: 'mining', getter: 'eth_mining', setter: 'eth_setMining' },\n    { name: 'gasPrice', getter: 'eth_gasPrice' },\n    { name: 'account', getter: 'eth_account' },\n    { name: 'accounts', getter: 'eth_accounts' },\n    { name: 'peerCount', getter: 'eth_peerCount' },\n    { name: 'defaultBlock', getter: 'eth_defaultBlock', setter: 'eth_setDefaultBlock' },\n    { name: 'number', getter: 'eth_number'}\n    ];\n};\n\nvar dbMethods = function () {\n    return [\n    { name: 'put', call: 'db_put' },\n    { name: 'get', call: 'db_get' },\n    { name: 'putString', call: 'db_putString' },\n    { name: 'getString', call: 'db_getString' }\n    ];\n};\n\nvar shhMethods = function () {\n    return [\n    { name: 'post', call: 'shh_post' },\n    { name: 'newIdentity', call: 'shh_newIdentity' },\n    { name: 'haveIdentity', call: 'shh_haveIdentity' },\n    { name: 'newGroup', call: 'shh_newGroup' },\n    { name: 'addToGroup', call: 'shh_addToGroup' }\n    ];\n};\n\nvar ethWatchMethods = function () {\n    var newFilter = function (args) {\n        return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';\n    };\n\n    return [\n    { name: 'newFilter', call: newFilter },\n    { name: 'uninstallFilter', call: 'eth_uninstallFilter' },\n    { name: 'getMessages', call: 'eth_filterLogs' }\n    ];\n};\n\nvar shhWatchMethods = function () {\n    return [\n    { name: 'newFilter', call: 'shh_newFilter' },\n    { name: 'uninstallFilter', call: 'shh_uninstallFilter' },\n    { name: 'getMessage', call: 'shh_getMessages' }\n    ];\n};\n\nvar setupMethods = function (obj, methods) {\n    methods.forEach(function (method) {\n        obj[method.name] = function () {\n            return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {\n                var call = typeof method.call === \"function\" ? method.call(args) : method.call;\n                return {call: call, args: args};\n            }).then(function (request) {\n                return new Promise(function (resolve, reject) {\n                    web3.provider.send(request, function (err, result) {\n                        if (!err) {\n                            resolve(result);\n                            return;\n                        }\n                        reject(err);\n                    });\n                });\n            }).catch(function(err) {\n                console.error(err);\n            });\n        };\n    });\n};\n\nvar setupProperties = function (obj, properties) {\n    properties.forEach(function (property) {\n        var proto = {};\n        proto.get = function () {\n            return new Promise(function(resolve, reject) {\n                web3.provider.send({call: property.getter}, function(err, result) {\n                    if (!err) {\n                        resolve(result);\n                        return;\n                    }\n                    reject(err);\n                });\n            });\n        };\n        if (property.setter) {\n            proto.set = function (val) {\n                return flattenPromise([val]).then(function (args) {\n                    return new Promise(function (resolve) {\n                        web3.provider.send({call: property.setter, args: args}, function (err, result) {\n                            if (!err) {\n                                resolve(result);\n                                return;\n                            }\n                            reject(err);\n                        });\n                    });\n                }).catch(function (err) {\n                    console.error(err);\n                });\n            };\n        }\n        Object.defineProperty(obj, property.name, proto);\n    });\n};\n\n// TODO: import from a dependency, don't duplicate.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\n\nvar web3 = {\n    _callbacks: {},\n    _events: {},\n    providers: {},\n\n    toHex: function(str) {\n        var hex = \"\";\n        for(var i = 0; i < str.length; i++) {\n            var n = str.charCodeAt(i).toString(16);\n            hex += n.length < 2 ? '0' + n : n;\n        }\n\n        return hex;\n    },\n\n    toAscii: function(hex) {\n        // Find termination\n        var str = \"\";\n        var i = 0, l = hex.length;\n        if (hex.substring(0, 2) === '0x')\n            i = 2;\n        for(; i < l; i+=2) {\n            var code = hex.charCodeAt(i);\n            if(code === 0) {\n                break;\n            }\n\n            str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));\n        }\n\n        return str;\n    },\n\n    fromAscii: function(str, pad) {\n        pad = pad === undefined ? 0 : pad;\n        var hex = this.toHex(str);\n        while(hex.length < pad*2)\n            hex += \"00\";\n        return \"0x\" + hex;\n    },\n\n    toDecimal: function (val) {\n        return hexToDec(val.substring(2));\n    },\n\n    fromDecimal: function (val) {\n        return \"0x\" + decToHex(val);\n    },\n\n    toEth: function(str) {\n        var val = typeof str === \"string\" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;\n        var unit = 0;\n        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];\n        while (val > 3000 && unit < units.length - 1)\n        {\n            val /= 1000;\n            unit++;\n        }\n        var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);\n        var replaceFunction = function($0, $1, $2) {\n            return $1 + ',' + $2;\n        };\n\n        while (true) {\n            var o = s;\n            s = s.replace(/(\\d)(\\d\\d\\d[\\.\\,])/, replaceFunction);\n            if (o === s)\n                break;\n        }\n        return s + ' ' + units[unit];\n    },\n\n    eth: {\n        prototype: Object(), // jshint ignore:line\n        watch: function (params) {\n            return new Filter(params, ethWatch);\n        }\n    },\n\n    db: {\n        prototype: Object() // jshint ignore:line\n    },\n\n    shh: {\n        prototype: Object(), // jshint ignore:line\n        watch: function (params) {\n            return new Filter(params, shhWatch);\n        }\n    },\n\n    on: function(event, id, cb) {\n        if(web3._events[event] === undefined) {\n            web3._events[event] = {};\n        }\n\n        web3._events[event][id] = cb;\n        return this;\n    },\n\n    off: function(event, id) {\n        if(web3._events[event] !== undefined) {\n            delete web3._events[event][id];\n        }\n\n        return this;\n    },\n\n    trigger: function(event, id, data) {\n        var callbacks = web3._events[event];\n        if (!callbacks || !callbacks[id]) {\n            return;\n        }\n        var cb = callbacks[id];\n        cb(data);\n    }\n};\n\nsetupMethods(web3, web3Methods());\nsetupMethods(web3.eth, ethMethods());\nsetupProperties(web3.eth, ethProperties());\nsetupMethods(web3.db, dbMethods());\nsetupMethods(web3.shh, shhMethods());\n\nvar ethWatch = {\n    changed: 'eth_changed'\n};\nsetupMethods(ethWatch, ethWatchMethods());\nvar shhWatch = {\n    changed: 'shh_changed'\n};\nsetupMethods(shhWatch, shhWatchMethods());\n\nvar ProviderManager = function() {\n    this.queued = [];\n    this.polls = [];\n    this.ready = false;\n    this.provider = undefined;\n    this.id = 1;\n\n    var self = this;\n    var poll = function () {\n        if (self.provider && self.provider.poll) {\n            self.polls.forEach(function (data) {\n                data.data._id = self.id;\n                self.id++;\n                self.provider.poll(data.data, data.id);\n            });\n        }\n        setTimeout(poll, 12000);\n    };\n    poll();\n};\n\nProviderManager.prototype.send = function(data, cb) {\n    data._id = this.id;\n    if (cb) {\n        web3._callbacks[data._id] = cb;\n    }\n\n    data.args = data.args || [];\n    this.id++;\n\n    if(this.provider !== undefined) {\n        this.provider.send(data);\n    } else {\n        console.warn(\"provider is not set\");\n        this.queued.push(data);\n    }\n};\n\nProviderManager.prototype.set = function(provider) {\n    if(this.provider !== undefined && this.provider.unload !== undefined) {\n        this.provider.unload();\n    }\n\n    this.provider = provider;\n    this.ready = true;\n};\n\nProviderManager.prototype.sendQueued = function() {\n    for(var i = 0; this.queued.length; i++) {\n        // Resend\n        this.send(this.queued[i]);\n    }\n};\n\nProviderManager.prototype.installed = function() {\n    return this.provider !== undefined;\n};\n\nProviderManager.prototype.startPolling = function (data, pollId) {\n    if (!this.provider || !this.provider.poll) {\n        return;\n    }\n    this.polls.push({data: data, id: pollId});\n};\n\nProviderManager.prototype.stopPolling = function (pollId) {\n    for (var i = this.polls.length; i--;) {\n        var poll = this.polls[i];\n        if (poll.id === pollId) {\n            this.polls.splice(i, 1);\n        }\n    }\n};\n\nweb3.provider = new ProviderManager();\n\nweb3.setProvider = function(provider) {\n    provider.onmessage = messageHandler;\n    web3.provider.set(provider);\n    web3.provider.sendQueued();\n};\n\nweb3.haveProvider = function() {\n    return !!web3.provider.provider;\n};\n\nvar Filter = function(options, impl) {\n    this.impl = impl;\n    this.callbacks = [];\n\n    var self = this;\n    this.promise = impl.newFilter(options);\n    this.promise.then(function (id) {\n        self.id = id;\n        web3.on(impl.changed, id, self.trigger.bind(self));\n        web3.provider.startPolling({call: impl.changed, args: [id]}, id);\n    });\n};\n\nFilter.prototype.arrived = function(callback) {\n    this.changed(callback);\n};\n\nFilter.prototype.changed = function(callback) {\n    var self = this;\n    this.promise.then(function(id) {\n        self.callbacks.push(callback);\n    });\n};\n\nFilter.prototype.trigger = function(messages) {\n    for(var i = 0; i < this.callbacks.length; i++) {\n        this.callbacks[i].call(this, messages);\n    }\n};\n\nFilter.prototype.uninstall = function() {\n    var self = this;\n    this.promise.then(function (id) {\n        self.impl.uninstallFilter(id);\n        web3.provider.stopPolling(id);\n        web3.off(impl.changed, id);\n    });\n};\n\nFilter.prototype.messages = function() {\n    var self = this;\n    return this.promise.then(function (id) {\n        return self.impl.getMessages(id);\n    });\n};\n\nFilter.prototype.logs = function () {\n    return this.messages();\n};\n\nfunction messageHandler(data) {\n    if(data._event !== undefined) {\n        web3.trigger(data._event, data._id, data.data);\n        return;\n    }\n\n    if(data._id) {\n        var cb = web3._callbacks[data._id];\n        if (cb) {\n            cb.call(this, data.error, data.data);\n            delete web3._callbacks[data._id];\n        }\n    }\n}\n\nif (typeof(module) !== \"undefined\")\n    module.exports = web3;\n",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file websocket.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n*/}\n\nvar WebSocketProvider = function(host) {\n    // onmessage handlers\n    this.handlers = [];\n    // queue will be filled with messages if send is invoked before the ws is ready\n    this.queued = [];\n    this.ready = false;\n\n    this.ws = new WebSocket(host);\n\n    var self = this;\n    this.ws.onmessage = function(event) {\n        for(var i = 0; i < self.handlers.length; i++) {\n            self.handlers[i].call(self, JSON.parse(event.data), event);\n        }\n    };\n\n    this.ws.onopen = function() {\n        self.ready = true;\n\n        for(var i = 0; i < self.queued.length; i++) {\n            // Resend\n            self.send(self.queued[i]);\n        }\n    };\n};\n\nWebSocketProvider.prototype.send = function(payload) {\n    if(this.ready) {\n        var data = JSON.stringify(payload);\n\n        this.ws.send(data);\n    } else {\n        this.queued.push(payload);\n    }\n};\n\nWebSocketProvider.prototype.onMessage = function(handler) {\n    this.handlers.push(handler);\n};\n\nWebSocketProvider.prototype.unload = function() {\n    this.ws.close();\n};\nObject.defineProperty(WebSocketProvider.prototype, \"onmessage\", {\n    set: function(provider) { this.onMessage(provider); }\n});\n\nif (typeof(module) !== \"undefined\")\n    module.exports = WebSocketProvider;\n",
-    "var web3 = require('./lib/web3');\nweb3.providers.WebSocketProvider = require('./lib/websocket');\nweb3.providers.HttpRpcProvider = require('./lib/httprpc');\nweb3.providers.QtProvider = require('./lib/qt');\nweb3.providers.AutoProvider = require('./lib/autoprovider');\nweb3.contract = require('./lib/contract');\n\nmodule.exports = web3;\n"
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n// TODO: make these be actually accurate instead of falling back onto JS's doubles.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\n/// Finds first index of array element matching pattern\n/// @param array\n/// @param callback pattern\n/// @returns index of element\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\n/// @returns a function that is used as a pattern for 'findIndex'\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\n/// @param string string to be padded\n/// @param number of characters that result string should have\n/// @param sign, by default 0\n/// @returns right aligned string\nvar padLeft = function (string, chars, sign) {\n    return new Array(chars - string.length + 1).join(sign ? sign : \"0\") + string;\n};\n\n/// @param expected type prefix (string)\n/// @returns function which checks if type has matching prefix. if yes, returns true, otherwise false\nvar prefixedType = function (prefix) {\n    return function (type) {\n        return type.indexOf(prefix) === 0;\n    };\n};\n\n/// @param expected type name (string)\n/// @returns function which checks if type is matching expected one. if yes, returns true, otherwise false\nvar namedType = function (name) {\n    return function (type) {\n        return name === type;\n    };\n};\n\n/// Setups input formatters for solidity types\n/// @returns an array of input formatters \nvar setupInputTypes = function () {\n    \n    /// Formats input value to byte representation of int\n    /// @returns right-aligned byte representation of int\n    var formatInt = function (value) {\n        var padding = 32 * 2;\n        if (typeof value === 'number') {\n            if (value < 0) {\n                \n                // two's complement\n                // TODO: fix big numbers support\n                value = ((value) >>> 0).toString(16);\n                return padLeft(value, padding, 'f');\n            }\n            value = value.toString(16);\n\n        }\n        else if (value.indexOf('0x') === 0)\n            value = value.substr(2);\n        else if (typeof value === 'string')\n            value = value.toHex(value);\n        else\n            value = (+value).toString(16);\n        return padLeft(value, padding);\n    };\n\n    /// Formats input value to byte representation of string\n    /// @returns left-algined byte representation of string\n    var formatString = function (value) {\n        return web3.fromAscii(value, 32).substr(2);\n    };\n\n    /// Formats input value to byte representation of bool\n    /// @returns right-aligned byte representation bool\n    var formatBool = function (value) {\n        return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');\n    };\n\n    return [\n        { type: prefixedType('uint'), format: formatInt },\n        { type: prefixedType('int'), format: formatInt },\n        { type: prefixedType('hash'), format: formatInt },\n        { type: prefixedType('string'), format: formatString }, \n        { type: prefixedType('real'), format: formatInt },\n        { type: prefixedType('ureal'), format: formatInt },\n        { type: namedType('address'), format: formatInt },\n        { type: namedType('bool'), format: formatBool }\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\n/// Formats input params to bytes\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param array of params that will be formatted to bytes\n/// @returns bytes representation of input params\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n    var padding = 32 * 2;\n\n    for (var i = 0; i < method.inputs.length; i++) {\n        var typeMatch = false;\n        for (var j = 0; j < inputTypes.length && !typeMatch; j++) {\n            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);\n        }\n        if (!typeMatch) {\n            console.error('input parser does not support type: ' + method.inputs[i].type);\n        }\n\n        var formatter = inputTypes[j - 1].format;\n        bytes += (formatter ? formatter(params[i]) : params[i]);\n    }\n    return bytes;\n};\n\n/// Setups output formaters for solidity types\n/// @returns an array of output formatters\nvar setupOutputTypes = function () {\n\n    /// Formats input right-aligned input bytes to int\n    /// @returns right-aligned input bytes formatted to int\n    var formatInt = function (value) {\n        return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);\n    };\n\n    /// @returns right-aligned input bytes formatted to hex\n    var formatHash = function (value) {\n        return \"0x\" + value;\n    };\n\n    /// @returns right-aligned input bytes formatted to bool\n    var formatBool = function (value) {\n        return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;\n    };\n\n    /// @returns left-aligned input bytes formatted to ascii string\n    var formatString = function (value) {\n        return web3.toAscii(value);\n    };\n\n    /// @returns right-aligned input bytes formatted to address\n    var formatAddress = function (value) {\n        return \"0x\" + value.slice(value.length - 40, value.length);\n    };\n\n    return [\n        { type: prefixedType('uint'), format: formatInt },\n        { type: prefixedType('int'), format: formatInt },\n        { type: prefixedType('hash'), format: formatHash },\n        { type: prefixedType('string'), format: formatString },\n        { type: prefixedType('real'), format: formatInt },\n        { type: prefixedType('ureal'), format: formatInt },\n        { type: namedType('address'), format: formatAddress },\n        { type: namedType('bool'), format: formatBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\n/// Formats output bytes back to param list\n/// @param contract json abi\n/// @param name of the method that we want to use\n/// @param bytes representtion of output \n/// @returns array of output params \nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    var padding = 32 * 2;\n    for (var i = 0; i < method.outputs.length; i++) {\n        var typeMatch = false;\n        for (var j = 0; j < outputTypes.length && !typeMatch; j++) {\n            typeMatch = outputTypes[j].type(method.outputs[i].type);\n        }\n\n        if (!typeMatch) {\n            // not found output parsing\n            console.error('output parser does not support type: ' + method.outputs[i].type);\n            continue;\n        }\n        var res = output.slice(0, padding);\n        var formatter = outputTypes[j - 1].format;\n        result.push(formatter ? formatter(res) : (\"0x\" + res));\n        output = output.slice(padding);\n    }\n\n    return result;\n};\n\n/// @param json abi for contract\n/// @returns input parser object for given json abi\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n    });\n\n    return parser;\n};\n\n/// @param json abi for contract\n/// @returns output parser for given json abi\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n    });\n\n    return parser;\n};\n\n/// @param json abi for contract\n/// @param method name for which we want to get method signature\n/// @returns (promise) contract method signature for method with given name\nvar methodSignature = function (json, name) {\n    var method = json[findMethodIndex(json, name)];\n    var result = name + '(';\n    var inputTypes = method.inputs.map(function (inp) {\n        return inp.type;\n    });\n    result += inputTypes.join(',');\n    result += ')';\n\n    return web3.sha3(web3.fromAscii(result));\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature\n};\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file autoprovider.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n/*\n * @brief if qt object is available, uses QtProvider,\n * if not tries to connect over websockets\n * if it fails, it uses HttpRpcProvider\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n/**\n * AutoProvider object prototype is implementing 'provider protocol'\n * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)\n * First it checkes if we are ethereum browser (if navigator.qt object is available)\n * if yes, we are using QtProvider\n * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)\n * if it's not possible, we are using httprpc provider (http://localhost:8080)\n * The constructor allows you to specify uris on which we are trying to connect over http or websockets\n * You can do that by passing objects with fields httrpc and websockets\n */\nvar AutoProvider = function (userOptions) {\n    if (web3.haveProvider()) {\n        return;\n    }\n\n    // before we determine what provider we are, we have to cache request\n    this.sendQueue = [];\n    this.onmessageQueue = [];\n\n    if (navigator.qt) {\n        this.provider = new web3.providers.QtProvider();\n        return;\n    }\n\n    userOptions = userOptions || {};\n    var options = {\n        httprpc: userOptions.httprpc || 'http://localhost:8080',\n        websockets: userOptions.websockets || 'ws://localhost:40404/eth'\n    };\n\n    var self = this;\n    var closeWithSuccess = function (success) {\n        ws.close();\n        if (success) {\n            self.provider = new web3.providers.WebSocketProvider(options.websockets);\n        } else {\n            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);\n            self.poll = self.provider.poll.bind(self.provider);\n        }\n        self.sendQueue.forEach(function (payload) {\n            self.provider(payload);\n        });\n        self.onmessageQueue.forEach(function (handler) {\n            self.provider.onmessage = handler;\n        });\n    };\n\n    var ws = new WebSocket(options.websockets);\n\n    ws.onopen = function() {\n        closeWithSuccess(true);\n    };\n\n    ws.onerror = function() {\n        closeWithSuccess(false);\n    };\n};\n\n/// Sends message forward to the provider, that is being used\n/// if provider is not yet set, enqueues the message\nAutoProvider.prototype.send = function (payload) {\n    if (this.provider) {\n        this.provider.send(payload);\n        return;\n    }\n    this.sendQueue.push(payload);\n};\n\n/// On incoming message sends the message to the provider that is currently being used\nObject.defineProperty(AutoProvider.prototype, 'onmessage', {\n    set: function (handler) {\n        if (this.provider) {\n            this.provider.onmessage = handler;\n            return;\n        }\n        this.onmessageQueue.push(handler);\n    }\n});\n\nmodule.exports = AutoProvider;\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file contract.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\nvar abi = require('./abi');\n\n/// method signature length in bytes\nvar ETH_METHOD_SIGNATURE_LENGTH = 4;\n\n/**\n * This method should be called when we want to call / transact some solidity method from javascript\n * it returns an object which has same methods available as solidity contract description\n * usage example: \n *\n * var abi = [{\n *      name: 'myMethod',\n *      inputs: [{ name: 'a', type: 'string' }],\n *      outputs: [{name: 'd', type: 'string' }]\n * }];  // contract abi\n *\n * var myContract = web3.eth.contract('0x0123123121', abi); // creation of contract object\n *\n * myContract.myMethod('this is test string param for call').call(); // myMethod call\n * myContract.myMethod('this is test string param for transact').transact() // myMethod transact\n *\n * @param address - address of the contract, which should be called\n * @param desc - abi json description of the contract, which is being created\n * @returns contract object\n */\nvar contract = function (address, desc) {\n    var inputParser = abi.inputParser(desc);\n    var outputParser = abi.outputParser(desc);\n\n    var contract = {};\n\n    desc.forEach(function (method) {\n        contract[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            var parsed = inputParser[method.name].apply(null, params);\n\n            var onSuccess = function (result) {\n                return outputParser[method.name](result);\n            };\n\n            return {\n                call: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.call(extra).then(onSuccess);\n                    });\n                },\n                transact: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.transact(extra).then(onSuccess);\n                    });\n                }\n            };\n        };\n    });\n\n    return contract;\n};\n\nmodule.exports = contract;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file filter.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n/// should be used when we want to watch something\n/// it's using inner polling mechanism and is notified about changes\nvar Filter = function(options, impl) {\n    this.impl = impl;\n    this.callbacks = [];\n\n    var self = this;\n    this.promise = impl.newFilter(options);\n    this.promise.then(function (id) {\n        self.id = id;\n        web3.on(impl.changed, id, self.trigger.bind(self));\n        web3.provider.startPolling({call: impl.changed, args: [id]}, id);\n    });\n};\n\n/// alias for changed*\nFilter.prototype.arrived = function(callback) {\n    this.changed(callback);\n};\n\n/// gets called when there is new eth/shh message\nFilter.prototype.changed = function(callback) {\n    var self = this;\n    this.promise.then(function(id) {\n        self.callbacks.push(callback);\n    });\n};\n\n/// trigger calling new message from people\nFilter.prototype.trigger = function(messages) {\n    for(var i = 0; i < this.callbacks.length; i++) {\n        this.callbacks[i].call(this, messages);\n    }\n};\n\n/// should be called to uninstall current filter\nFilter.prototype.uninstall = function() {\n    var self = this;\n    this.promise.then(function (id) {\n        self.impl.uninstallFilter(id);\n        web3.provider.stopPolling(id);\n        web3.off(impl.changed, id);\n    });\n};\n\n/// should be called to manually trigger getting latest messages from the client\nFilter.prototype.messages = function() {\n    var self = this;\n    return this.promise.then(function (id) {\n        return self.impl.getMessages(id);\n    });\n};\n\n/// alias for messages\nFilter.prototype.logs = function () {\n    return this.messages();\n};\n\nmodule.exports = Filter;\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file httprpc.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line\n*/}\n\n/**\n * HttpRpcProvider object prototype is implementing 'provider protocol'\n * Should be used when we want to connect to ethereum backend over http && jsonrpc\n * It's compatible with cpp client\n * The contructor allows to specify host uri\n * This provider is using in-browser polling mechanism\n */\nvar HttpRpcProvider = function (host) {\n    this.handlers = [];\n    this.host = host;\n};\n\n/// Transforms inner message to proper jsonrpc object\n/// @param inner message object\n/// @returns jsonrpc object\nfunction formatJsonRpcObject(object) {\n    return {\n        jsonrpc: '2.0',\n        method: object.call,\n        params: object.args,\n        id: object._id\n    };\n}\n\n/// Transforms jsonrpc object to inner message\n/// @param incoming jsonrpc message \n/// @returns inner message object\nfunction formatJsonRpcMessage(message) {\n    var object = JSON.parse(message);\n\n    return {\n        _id: object.id,\n        data: object.result,\n        error: object.error\n    };\n}\n\n/// Prototype object method \n/// Asynchronously sends request to server\n/// @param payload is inner message object\n/// @param cb is callback which is being called when response is comes back\nHttpRpcProvider.prototype.sendRequest = function (payload, cb) {\n    var data = formatJsonRpcObject(payload);\n\n    var request = new XMLHttpRequest();\n    request.open(\"POST\", this.host, true);\n    request.send(JSON.stringify(data));\n    request.onreadystatechange = function () {\n        if (request.readyState === 4 && cb) {\n            cb(request);\n        }\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to server\n/// Asynchronous\n/// On response it passes message to handlers\n/// @param payload is inner message object\nHttpRpcProvider.prototype.send = function (payload) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, formatJsonRpcMessage(request.responseText));\n        });\n    });\n};\n\n/// Prototype object method\n/// Should be called only for polling requests\n/// Asynchronous\n/// On response it passege message to handlers, but only if message's result is true or not empty array\n/// Otherwise response is being silently ignored\n/// @param payload is inner message object\n/// @id is id of poll that we are calling\nHttpRpcProvider.prototype.poll = function (payload, id) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        var parsed = JSON.parse(request.responseText);\n        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {\n            return;\n        }\n        self.handlers.forEach(function (handler) {\n            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});\n        });\n    });\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(HttpRpcProvider.prototype, \"onmessage\", {\n    set: function (handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = HttpRpcProvider;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file providermanager.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n/**\n * Provider manager object prototype\n * It's responsible for passing messages to providers\n * If no provider is set it's responsible for queuing requests\n * It's also responsible for polling the ethereum node for incoming messages\n * Default poll timeout is 12 seconds\n * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling,\n * and provider manager polling mechanism is not used\n */\nvar ProviderManager = function() {\n    this.queued = [];\n    this.polls = [];\n    this.ready = false;\n    this.provider = undefined;\n    this.id = 1;\n\n    var self = this;\n    var poll = function () {\n        if (self.provider && self.provider.poll) {\n            self.polls.forEach(function (data) {\n                data.data._id = self.id;\n                self.id++;\n                self.provider.poll(data.data, data.id);\n            });\n        }\n        setTimeout(poll, 12000);\n    };\n    poll();\n};\n\n/// sends outgoing requests, if provider is not available, enqueue the request\nProviderManager.prototype.send = function(data, cb) {\n    data._id = this.id;\n    if (cb) {\n        web3._callbacks[data._id] = cb;\n    }\n\n    data.args = data.args || [];\n    this.id++;\n\n    if(this.provider !== undefined) {\n        this.provider.send(data);\n    } else {\n        console.warn(\"provider is not set\");\n        this.queued.push(data);\n    }\n};\n\n/// setups provider, which will be used for sending messages\nProviderManager.prototype.set = function(provider) {\n    if(this.provider !== undefined && this.provider.unload !== undefined) {\n        this.provider.unload();\n    }\n\n    this.provider = provider;\n    this.ready = true;\n};\n\n/// resends queued messages\nProviderManager.prototype.sendQueued = function() {\n    for(var i = 0; this.queued.length; i++) {\n        // Resend\n        this.send(this.queued[i]);\n    }\n};\n\n/// @returns true if the provider i properly set\nProviderManager.prototype.installed = function() {\n    return this.provider !== undefined;\n};\n\n/// this method is only used, when we do not have native qt bindings and have to do polling on our own\n/// should be callled, on start watching for eth/shh changes\nProviderManager.prototype.startPolling = function (data, pollId) {\n    if (!this.provider || !this.provider.poll) {\n        return;\n    }\n    this.polls.push({data: data, id: pollId});\n};\n\n/// should be called to stop polling for certain watch changes\nProviderManager.prototype.stopPolling = function (pollId) {\n    for (var i = this.polls.length; i--;) {\n        var poll = this.polls[i];\n        if (poll.id === pollId) {\n            this.polls.splice(i, 1);\n        }\n    }\n};\n\nmodule.exports = ProviderManager;\n\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file qt.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\n/**\n * QtProvider object prototype is implementing 'provider protocol'\n * Should be used inside ethereum browser. It's compatible with cpp and go clients.\n * It uses navigator.qt object to pass the messages to native bindings\n */\nvar QtProvider = function() {\n    this.handlers = [];\n\n    var self = this;\n    navigator.qt.onmessage = function (message) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, JSON.parse(message.data));\n        });\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to native bindings\n/// Asynchronous\n/// Response will be received by navigator.qt.onmessage method and passed to handlers\n/// @param payload is inner message object\nQtProvider.prototype.send = function(payload) {\n    navigator.qt.postMessage(JSON.stringify(payload));\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(QtProvider.prototype, \"onmessage\", {\n    set: function(handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = QtProvider;\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file web3.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\nvar Filter = require('./filter');\nvar ProviderManager = require('./providermanager');\n\n/// Recursively resolves all promises in given object and replaces the resolved values with promises\n/// @param any object/array/promise/anything else..\n/// @returns (resolves) object with replaced promises with their result \nfunction flattenPromise (obj) {\n    if (obj instanceof Promise) {\n        return Promise.resolve(obj);\n    }\n\n    if (obj instanceof Array) {\n        return new Promise(function (resolve) {\n            var promises = obj.map(function (o) {\n                return flattenPromise(o);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < obj.length; i++) {\n                    obj[i] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    if (obj instanceof Object) {\n        return new Promise(function (resolve) {\n            var keys = Object.keys(obj);\n            var promises = keys.map(function (key) {\n                return flattenPromise(obj[key]);\n            });\n\n            return Promise.all(promises).then(function (res) {\n                for (var i = 0; i < keys.length; i++) {\n                    obj[keys[i]] = res[i];\n                }\n                resolve(obj);\n            });\n        });\n    }\n\n    return Promise.resolve(obj);\n}\n\n/// @returns an array of objects describing web3 api methods\nvar web3Methods = function () {\n    return [\n    { name: 'sha3', call: 'web3_sha3' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth api methods\nvar ethMethods = function () {\n    var blockCall = function (args) {\n        return typeof args[0] === \"string\" ? \"eth_blockByHash\" : \"eth_blockByNumber\";\n    };\n\n    var transactionCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_transactionByHash' : 'eth_transactionByNumber';\n    };\n\n    var uncleCall = function (args) {\n        return typeof args[0] === \"string\" ? 'eth_uncleByHash' : 'eth_uncleByNumber';\n    };\n\n    var methods = [\n    { name: 'balanceAt', call: 'eth_balanceAt' },\n    { name: 'stateAt', call: 'eth_stateAt' },\n    { name: 'storageAt', call: 'eth_storageAt' },\n    { name: 'countAt', call: 'eth_countAt'},\n    { name: 'codeAt', call: 'eth_codeAt' },\n    { name: 'transact', call: 'eth_transact' },\n    { name: 'call', call: 'eth_call' },\n    { name: 'block', call: blockCall },\n    { name: 'transaction', call: transactionCall },\n    { name: 'uncle', call: uncleCall },\n    { name: 'compilers', call: 'eth_compilers' },\n    { name: 'lll', call: 'eth_lll' },\n    { name: 'solidity', call: 'eth_solidity' },\n    { name: 'serpent', call: 'eth_serpent' },\n    { name: 'logs', call: 'eth_logs' }\n    ];\n    return methods;\n};\n\n/// @returns an array of objects describing web3.eth api properties\nvar ethProperties = function () {\n    return [\n    { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },\n    { name: 'listening', getter: 'eth_listening', setter: 'eth_setListening' },\n    { name: 'mining', getter: 'eth_mining', setter: 'eth_setMining' },\n    { name: 'gasPrice', getter: 'eth_gasPrice' },\n    { name: 'account', getter: 'eth_account' },\n    { name: 'accounts', getter: 'eth_accounts' },\n    { name: 'peerCount', getter: 'eth_peerCount' },\n    { name: 'defaultBlock', getter: 'eth_defaultBlock', setter: 'eth_setDefaultBlock' },\n    { name: 'number', getter: 'eth_number'}\n    ];\n};\n\n/// @returns an array of objects describing web3.db api methods\nvar dbMethods = function () {\n    return [\n    { name: 'put', call: 'db_put' },\n    { name: 'get', call: 'db_get' },\n    { name: 'putString', call: 'db_putString' },\n    { name: 'getString', call: 'db_getString' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh api methods\nvar shhMethods = function () {\n    return [\n    { name: 'post', call: 'shh_post' },\n    { name: 'newIdentity', call: 'shh_newIdentity' },\n    { name: 'haveIdentity', call: 'shh_haveIdentity' },\n    { name: 'newGroup', call: 'shh_newGroup' },\n    { name: 'addToGroup', call: 'shh_addToGroup' }\n    ];\n};\n\n/// @returns an array of objects describing web3.eth.watch api methods\nvar ethWatchMethods = function () {\n    var newFilter = function (args) {\n        return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';\n    };\n\n    return [\n    { name: 'newFilter', call: newFilter },\n    { name: 'uninstallFilter', call: 'eth_uninstallFilter' },\n    { name: 'getMessages', call: 'eth_filterLogs' }\n    ];\n};\n\n/// @returns an array of objects describing web3.shh.watch api methods\nvar shhWatchMethods = function () {\n    return [\n    { name: 'newFilter', call: 'shh_newFilter' },\n    { name: 'uninstallFilter', call: 'shh_uninstallFilter' },\n    { name: 'getMessage', call: 'shh_getMessages' }\n    ];\n};\n\n/// creates methods in a given object based on method description on input\n/// setups api calls for these methods\nvar setupMethods = function (obj, methods) {\n    methods.forEach(function (method) {\n        obj[method.name] = function () {\n            return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {\n                var call = typeof method.call === \"function\" ? method.call(args) : method.call;\n                return {call: call, args: args};\n            }).then(function (request) {\n                return new Promise(function (resolve, reject) {\n                    web3.provider.send(request, function (err, result) {\n                        if (!err) {\n                            resolve(result);\n                            return;\n                        }\n                        reject(err);\n                    });\n                });\n            }).catch(function(err) {\n                console.error(err);\n            });\n        };\n    });\n};\n\n/// creates properties in a given object based on properties description on input\n/// setups api calls for these properties\nvar setupProperties = function (obj, properties) {\n    properties.forEach(function (property) {\n        var proto = {};\n        proto.get = function () {\n            return new Promise(function(resolve, reject) {\n                web3.provider.send({call: property.getter}, function(err, result) {\n                    if (!err) {\n                        resolve(result);\n                        return;\n                    }\n                    reject(err);\n                });\n            });\n        };\n        if (property.setter) {\n            proto.set = function (val) {\n                return flattenPromise([val]).then(function (args) {\n                    return new Promise(function (resolve) {\n                        web3.provider.send({call: property.setter, args: args}, function (err, result) {\n                            if (!err) {\n                                resolve(result);\n                                return;\n                            }\n                            reject(err);\n                        });\n                    });\n                }).catch(function (err) {\n                    console.error(err);\n                });\n            };\n        }\n        Object.defineProperty(obj, property.name, proto);\n    });\n};\n\n// TODO: import from a dependency, don't duplicate.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\n/// setups web3 object, and it's in-browser executed methods\nvar web3 = {\n    _callbacks: {},\n    _events: {},\n    providers: {},\n\n    toHex: function(str) {\n        var hex = \"\";\n        for(var i = 0; i < str.length; i++) {\n            var n = str.charCodeAt(i).toString(16);\n            hex += n.length < 2 ? '0' + n : n;\n        }\n\n        return hex;\n    },\n\n    /// @returns ascii string representation of hex value prefixed with 0x\n    toAscii: function(hex) {\n        // Find termination\n        var str = \"\";\n        var i = 0, l = hex.length;\n        if (hex.substring(0, 2) === '0x')\n            i = 2;\n        for(; i < l; i+=2) {\n            var code = parseInt(hex.substr(i, 2), 16);\n            if(code === 0) {\n                break;\n            }\n\n            str += String.fromCharCode(code);\n        }\n\n        return str;\n    },\n\n    /// @returns hex representation (prefixed by 0x) of ascii string\n    fromAscii: function(str, pad) {\n        pad = pad === undefined ? 0 : pad;\n        var hex = this.toHex(str);\n        while(hex.length < pad*2)\n            hex += \"00\";\n        return \"0x\" + hex;\n    },\n\n    /// @returns decimal representaton of hex value prefixed by 0x\n    toDecimal: function (val) {\n        return hexToDec(val.substring(2));\n    },\n\n    /// @returns hex representation (prefixed by 0x) of decimal value\n    fromDecimal: function (val) {\n        return \"0x\" + decToHex(val);\n    },\n\n    /// used to transform value/string to eth string\n    toEth: function(str) {\n        var val = typeof str === \"string\" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;\n        var unit = 0;\n        var units = [ 'wei', 'Kwei', 'Mwei', 'Gwei', 'szabo', 'finney', 'ether', 'grand', 'Mether', 'Gether', 'Tether', 'Pether', 'Eether', 'Zether', 'Yether', 'Nether', 'Dether', 'Vether', 'Uether' ];\n        while (val > 3000 && unit < units.length - 1)\n        {\n            val /= 1000;\n            unit++;\n        }\n        var s = val.toString().length < val.toFixed(2).length ? val.toString() : val.toFixed(2);\n        var replaceFunction = function($0, $1, $2) {\n            return $1 + ',' + $2;\n        };\n\n        while (true) {\n            var o = s;\n            s = s.replace(/(\\d)(\\d\\d\\d[\\.\\,])/, replaceFunction);\n            if (o === s)\n                break;\n        }\n        return s + ' ' + units[unit];\n    },\n\n    /// eth object prototype\n    eth: {\n        watch: function (params) {\n            return new Filter(params, ethWatch);\n        }\n    },\n\n    /// db object prototype\n    db: {},\n\n    /// shh object prototype\n    shh: {\n        watch: function (params) {\n            return new Filter(params, shhWatch);\n        }\n    },\n\n    /// used by filter to register callback with given id\n    on: function(event, id, cb) {\n        if(web3._events[event] === undefined) {\n            web3._events[event] = {};\n        }\n\n        web3._events[event][id] = cb;\n        return this;\n    },\n\n    /// used by filter to unregister callback with given id\n    off: function(event, id) {\n        if(web3._events[event] !== undefined) {\n            delete web3._events[event][id];\n        }\n\n        return this;\n    },\n\n    /// used to trigger callback registered by filter\n    trigger: function(event, id, data) {\n        var callbacks = web3._events[event];\n        if (!callbacks || !callbacks[id]) {\n            return;\n        }\n        var cb = callbacks[id];\n        cb(data);\n    },\n\n    /// @returns true if provider is installed\n    haveProvider: function() {\n        return !!web3.provider.provider;\n    }\n};\n\n/// setups all api methods\nsetupMethods(web3, web3Methods());\nsetupMethods(web3.eth, ethMethods());\nsetupProperties(web3.eth, ethProperties());\nsetupMethods(web3.db, dbMethods());\nsetupMethods(web3.shh, shhMethods());\n\nvar ethWatch = {\n    changed: 'eth_changed'\n};\n\nsetupMethods(ethWatch, ethWatchMethods());\n\nvar shhWatch = {\n    changed: 'shh_changed'\n};\n\nsetupMethods(shhWatch, shhWatchMethods());\n\nweb3.provider = new ProviderManager();\n\nweb3.setProvider = function(provider) {\n    provider.onmessage = messageHandler;\n    web3.provider.set(provider);\n    web3.provider.sendQueued();\n};\n\n/// callled when there is new incoming message\nfunction messageHandler(data) {\n    if(data._event !== undefined) {\n        web3.trigger(data._event, data._id, data.data);\n        return;\n    }\n\n    if(data._id) {\n        var cb = web3._callbacks[data._id];\n        if (cb) {\n            cb.call(this, data.error, data.data);\n            delete web3._callbacks[data._id];\n        }\n    }\n}\n\nif (typeof(module) !== \"undefined\")\n    module.exports = web3;\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file websocket.js\n * @authors:\n *   Jeffrey Wilcke <jeff@ethdev.com>\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n*/}\n\n/**\n * WebSocketProvider object prototype is implementing 'provider protocol'\n * Should be used when we want to connect to ethereum backend over websockets\n * It's compatible with go client\n * The constructor allows to specify host uri\n */\nvar WebSocketProvider = function(host) {\n\n    // onmessage handlers\n    this.handlers = [];\n\n    // queue will be filled with messages if send is invoked before the ws is ready\n    this.queued = [];\n    this.ready = false;\n\n    this.ws = new WebSocket(host);\n\n    var self = this;\n    this.ws.onmessage = function(event) {\n        for(var i = 0; i < self.handlers.length; i++) {\n            self.handlers[i].call(self, JSON.parse(event.data), event);\n        }\n    };\n\n    this.ws.onopen = function() {\n        self.ready = true;\n\n        for (var i = 0; i < self.queued.length; i++) {\n            // Resend\n            self.send(self.queued[i]);\n        }\n    };\n};\n\n/// Prototype object method\n/// Should be called when we want to send single api request to server\n/// Asynchronous, it's using websockets\n/// Response for the call will be received by ws.onmessage\n/// @param payload is inner message object\nWebSocketProvider.prototype.send = function(payload) {\n    if (this.ready) {\n        var data = JSON.stringify(payload);\n\n        this.ws.send(data);\n    } else {\n        this.queued.push(payload);\n    }\n};\n\n/// Prototype object method\n/// Should be called to add handlers\nWebSocketProvider.prototype.onMessage = function(handler) {\n    this.handlers.push(handler);\n};\n\n/// Prototype object method\n/// Should be called to close websockets connection\nWebSocketProvider.prototype.unload = function() {\n    this.ws.close();\n};\n\n/// Prototype object property\n/// Should be used to set message handlers for this provider\nObject.defineProperty(WebSocketProvider.prototype, \"onmessage\", {\n    set: function(provider) { this.onMessage(provider); }\n});\n\nif (typeof(module) !== \"undefined\")\n    module.exports = WebSocketProvider;\n",
+    "var web3 = require('./lib/web3');\nweb3.providers.WebSocketProvider = require('./lib/websocket');\nweb3.providers.HttpRpcProvider = require('./lib/httprpc');\nweb3.providers.QtProvider = require('./lib/qt');\nweb3.providers.AutoProvider = require('./lib/autoprovider');\nweb3.eth.contract = require('./lib/contract');\n\nmodule.exports = web3;\n"
   ]
 }
\ No newline at end of file
diff --git a/dist/ethereum.min.js b/dist/ethereum.min.js
index 1eae35bd3..f142507ee 100644
--- a/dist/ethereum.min.js
+++ b/dist/ethereum.min.js
@@ -1 +1 @@
-require=function t(e,n,r){function o(a,s){if(!n[a]){if(!e[a]){var u="function"==typeof require&&require;if(!s&&u)return u(a,!0);if(i)return i(a,!0);var c=new Error("Cannot find module '"+a+"'");throw c.code="MODULE_NOT_FOUND",c}var l=n[a]={exports:{}};e[a][0].call(l.exports,function(t){var n=e[a][1][t];return o(n?n:t)},l,l.exports,t,e,n,r)}return n[a].exports}for(var i="function"==typeof require&&require,a=0;a<r.length;a++)o(r[a]);return o}({1:[function(t,e){var n=function(t){return parseInt(t,16).toString()},r=function(t,e){for(var n=!1,r=0;r<t.length&&!n;r++)n=e(t[r]);return n?r-1:-1},o=function(t,e){return r(t,function(t){return t.name===e})},i=function(t,e){return new Array(e-t.length+1).join("0")+t},a=function(t,e){var n=t.slice(e.length);return""===n?32:parseInt(n)/8},s=function(t,e){var n=t.slice(e.length);return""===n?32:parseInt(n)},u=function(t,e){var n=t.slice(e.length);if(""===n)return 32;for(var r=n.split("x"),o=0,i=0;r>i;i++)o+=r[i]/8;return o},c=function(){var t=function(t){return"number"==typeof t?t.toString(16):"string"==typeof t&&0===t.indexOf("0x")?t.substr(2):"string"==typeof t?web3.toHex(t):(+t).toString(16)},e=function(e,n){return function(r,o){var a=e;if(0!==r.indexOf(a))return!1;var s=n(r,a);return s>32?!1:(s=32,"string"===e?web3.fromAscii(o,s).substr(2):i(t(o),2*s))}},n=function(t,e,n){return function(r,o){return r!==t?!1:(e=32,i(n?n(o):o,2*e))}},r=function(t){return t?"01":"00"};return[e("uint",a),e("int",a),e("hash",a),e("string",s),e("real",u),e("ureal",u),n("address",20,t),n("bool",1,r)]},l=c(),h=function(t,e,n){var r="",i=o(t,e);if(-1!==i){for(var a=t[i],s=0;s<a.inputs.length;s++){for(var u=!1,c=0;c<l.length&&!u;c++)u=l[c](a.inputs[s].type,n[s]);u||console.error("unsupported json type: "+a.inputs[s].type),r+=u}return r}},f=function(){var t=function(t,e){return function(n){var r=t;if(0!==n.indexOf(r))return-1;var o=e(n,r);return o>32?-1:(o=32,2*o)}},e=function(t,e){return function(n){return e=32,t===n?2*e:-1}},r=function(t){return t.length<=8?+parseInt(t,16):n(t)},o=function(t){return"0x"+t},i=function(t){return"1"===t?!0:!1},c=function(t){return web3.toAscii(t)};return[{padding:t("uint",a),format:r},{padding:t("int",a),format:r},{padding:t("hash",a),format:o},{padding:t("string",s),format:c},{padding:t("real",u),format:r},{padding:t("ureal",u),format:r},{padding:e("address",20)},{padding:e("bool",1),format:i}]},p=f(),d=function(t,e,n){var r=o(t,e);if(-1!==r){n=n.slice(2);for(var i=[],a=t[r],s=0;s<a.outputs.length;s++){for(var u=-1,c=0;c<p.length&&-1===u;c++)u=p[c].padding(a.outputs[s].type);if(-1!==u){var l=n.slice(0,u),h=p[c-1].format;i.push(h?h(l):"0x"+l),n=n.slice(u)}}return i}},v=function(t){var e={};return t.forEach(function(n){e[n.name]=function(){var e=Array.prototype.slice.call(arguments);return h(t,n.name,e)}}),e},g=function(t){var e={};return t.forEach(function(n){e[n.name]=function(e){return d(t,n.name,e)}}),e},m=function(t,e){var n=t[o(t,e)],r=e+"(",i=n.inputs.map(function(t){return t.type});return r+=i.join(","),r+=")",web3.sha3(web3.fromAscii(r))};e.exports={inputParser:v,outputParser:g,methodSignature:m}},{}],2:[function(t,e){var n=function(t){if(!web3.haveProvider()){if(this.sendQueue=[],this.onmessageQueue=[],navigator.qt)return void(this.provider=new web3.providers.QtProvider);t=t||{};var e={httprpc:t.httprpc||"http://localhost:8080",websockets:t.websockets||"ws://localhost:40404/eth"},n=this,r=function(t){o.close(),t?n.provider=new web3.providers.WebSocketProvider(e.websockets):(n.provider=new web3.providers.HttpRpcProvider(e.httprpc),n.poll=n.provider.poll.bind(n.provider)),n.sendQueue.forEach(function(t){n.provider(t)}),n.onmessageQueue.forEach(function(t){n.provider.onmessage=t})},o=new WebSocket(e.websockets);o.onopen=function(){r(!0)},o.onerror=function(){r(!1)}}};n.prototype.send=function(t){return this.provider?void this.provider.send(t):void this.sendQueue.push(t)},Object.defineProperty(n.prototype,"onmessage",{set:function(t){return this.provider?void(this.provider.onmessage=t):void this.onmessageQueue.push(t)}}),e.exports=n},{}],3:[function(t,e){var n=t("./abi"),r=4,o=function(t,e){var o=n.inputParser(e),i=n.outputParser(e),a={};return e.forEach(function(s){a[s.name]=function(){var a=Array.prototype.slice.call(arguments),u=o[s.name].apply(null,a),c=function(t){return i[s.name](t)};return{call:function(o){return o=o||{},o.to=t,n.methodSignature(e,s.name).then(function(t){return o.data=t.slice(0,2+2*r)+u,web3.eth.call(o).then(c)})},transact:function(o){return o=o||{},o.to=t,n.methodSignature(e,s.name).then(function(t){return o.data=t.slice(0,2+2*r)+u,web3.eth.transact(o).then(c)})}}}}),a};e.exports=o},{"./abi":1}],4:[function(t,e){function n(t){return{jsonrpc:"2.0",method:t.call,params:t.args,id:t._id}}function r(t){var e=JSON.parse(t);return{_id:e.id,data:e.result,error:e.error}}var o=function(t){this.handlers=[],this.host=t};o.prototype.sendRequest=function(t,e){var r=n(t),o=new XMLHttpRequest;o.open("POST",this.host,!0),o.send(JSON.stringify(r)),o.onreadystatechange=function(){4===o.readyState&&e&&e(o)}},o.prototype.send=function(t){var e=this;this.sendRequest(t,function(t){e.handlers.forEach(function(n){n.call(e,r(t.responseText))})})},o.prototype.poll=function(t,e){var n=this;this.sendRequest(t,function(r){var o=JSON.parse(r.responseText);!o.error&&(o.result instanceof Array?0!==o.result.length:o.result)&&n.handlers.forEach(function(r){r.call(n,{_event:t.call,_id:e,data:o.result})})})},Object.defineProperty(o.prototype,"onmessage",{set:function(t){this.handlers.push(t)}}),e.exports=o},{}],5:[function(t,e){var n=function(){this.handlers=[];var t=this;navigator.qt.onmessage=function(e){t.handlers.forEach(function(n){n.call(t,JSON.parse(e.data))})}};n.prototype.send=function(t){navigator.qt.postMessage(JSON.stringify(t))},Object.defineProperty(n.prototype,"onmessage",{set:function(t){this.handlers.push(t)}}),e.exports=n},{}],6:[function(t,e){function n(t){return t instanceof Promise?Promise.resolve(t):t instanceof Array?new Promise(function(e){var r=t.map(function(t){return n(t)});return Promise.all(r).then(function(n){for(var r=0;r<t.length;r++)t[r]=n[r];e(t)})}):t instanceof Object?new Promise(function(e){var r=Object.keys(t),o=r.map(function(e){return n(t[e])});return Promise.all(o).then(function(n){for(var o=0;o<r.length;o++)t[r[o]]=n[o];e(t)})}):Promise.resolve(t)}function r(t){if(void 0!==t._event)return void v.trigger(t._event,t._id,t.data);if(t._id){var e=v._callbacks[t._id];e&&(e.call(this,t.error,t.data),delete v._callbacks[t._id])}}var o=function(){return[{name:"sha3",call:"web3_sha3"}]},i=function(){var t=function(t){return"string"==typeof t[0]?"eth_blockByHash":"eth_blockByNumber"},e=function(t){return"string"==typeof t[0]?"eth_transactionByHash":"eth_transactionByNumber"},n=function(t){return"string"==typeof t[0]?"eth_uncleByHash":"eth_uncleByNumber"},r=[{name:"balanceAt",call:"eth_balanceAt"},{name:"stateAt",call:"eth_stateAt"},{name:"storageAt",call:"eth_storageAt"},{name:"countAt",call:"eth_countAt"},{name:"codeAt",call:"eth_codeAt"},{name:"transact",call:"eth_transact"},{name:"call",call:"eth_call"},{name:"block",call:t},{name:"transaction",call:e},{name:"uncle",call:n},{name:"compilers",call:"eth_compilers"},{name:"lll",call:"eth_lll"},{name:"solidity",call:"eth_solidity"},{name:"serpent",call:"eth_serpent"},{name:"logs",call:"eth_logs"}];return 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n=function(t){this.handlers=[],this.queued=[],this.ready=!1,this.ws=new WebSocket(t);var e=this;this.ws.onmessage=function(t){for(var n=0;n<e.handlers.length;n++)e.handlers[n].call(e,JSON.parse(t.data),t)},this.ws.onopen=function(){e.ready=!0;for(var t=0;t<e.queued.length;t++)e.send(e.queued[t])}};n.prototype.send=function(t){if(this.ready){var e=JSON.stringify(t);this.ws.send(e)}else this.queued.push(t)},n.prototype.onMessage=function(t){this.handlers.push(t)},n.prototype.unload=function(){this.ws.close()},Object.defineProperty(n.prototype,"onmessage",{set:function(t){this.onMessage(t)}}),"undefined"!=typeof e&&(e.exports=n)},{}],web3:[function(t,e){var 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t[0]?"eth_newFilterString":"eth_newFilter"};return[{name:"newFilter",call:t},{name:"uninstallFilter",call:"eth_uninstallFilter"},{name:"getMessages",call:"eth_filterLogs"}]},f=function(){return[{name:"newFilter",call:"shh_newFilter"},{name:"uninstallFilter",call:"shh_uninstallFilter"},{name:"getMessage",call:"shh_getMessages"}]},p=function(t,e){e.forEach(function(e){t[e.name]=function(){return n(Array.prototype.slice.call(arguments)).then(function(t){var n="function"==typeof e.call?e.call(t):e.call;return{call:n,args:t}}).then(function(t){return new Promise(function(e,n){m.provider.send(t,function(t,r){return t?void n(t):void e(r)})})}).catch(function(t){console.error(t)})}})},d=function(t,e){e.forEach(function(e){var r={};r.get=function(){return new Promise(function(t,n){m.provider.send({call:e.getter},function(e,r){return e?void n(e):void t(r)})})},e.setter&&(r.set=function(t){return n([t]).then(function(t){return new Promise(function(n){m.provider.send({call:e.setter,args:t},function(t,e){return t?void reject(t):void n(e)})})}).catch(function(t){console.error(t)})}),Object.defineProperty(t,e.name,r)})},v=function(t){return parseInt(t,16).toString()},g=function(t){return parseInt(t).toString(16)},m={_callbacks:{},_events:{},providers:{},toHex:function(t){for(var e="",n=0;n<t.length;n++){var r=t.charCodeAt(n).toString(16);e+=r.length<2?"0"+r:r}return e},toAscii:function(t){var e="",n=0,r=t.length;for("0x"===t.substring(0,2)&&(n=2);r>n;n+=2){var o=parseInt(t.substr(n,2),16);if(0===o)break;e+=String.fromCharCode(o)}return e},fromAscii:function(t,e){e=void 0===e?0:e;for(var n=this.toHex(t);n.length<2*e;)n+="00";return"0x"+n},toDecimal:function(t){return v(t.substring(2))},fromDecimal:function(t){return"0x"+g(t)},toEth:function(t){for(var e="string"==typeof t?0===t.indexOf("0x")?parseInt(t.substr(2),16):parseInt(t):t,n=0,r=["wei","Kwei","Mwei","Gwei","szabo","finney","ether","grand","Mether","Gether","Tether","Pether","Eether","Zether","Yether","Nether","Dether","Vether","Uether"];e>3e3&&n<r.length-1;)e/=1e3,n++;for(var o=e.toString().length<e.toFixed(2).length?e.toString():e.toFixed(2),i=function(t,e,n){return e+","+n};;){var a=o;if(o=o.replace(/(\d)(\d\d\d[\.\,])/,i),a===o)break}return o+" "+r[n]},eth:{watch:function(t){return new o(t,y)}},db:{},shh:{watch:function(t){return new o(t,b)}},on:function(t,e,n){return void 0===m._events[t]&&(m._events[t]={}),m._events[t][e]=n,this},off:function(t,e){return void 0!==m._events[t]&&delete m._events[t][e],this},trigger:function(t,e,n){var r=m._events[t];if(r&&r[e]){var o=r[e];o(n)}},haveProvider:function(){return!!m.provider.provider}};p(m,a()),p(m.eth,s()),d(m.eth,u()),p(m.db,c()),p(m.shh,l());var y={changed:"eth_changed"};p(y,h());var b={changed:"shh_changed"};p(b,f()),m.provider=new i,m.setProvider=function(t){t.onmessage=r,m.provider.set(t),m.provider.sendQueued()},"undefined"!=typeof e&&(e.exports=m)},{"./filter":4,"./providermanager":6}],9:[function(t,e){var n=function(t){this.handlers=[],this.queued=[],this.ready=!1,this.ws=new WebSocket(t);var e=this;this.ws.onmessage=function(t){for(var n=0;n<e.handlers.length;n++)e.handlers[n].call(e,JSON.parse(t.data),t)},this.ws.onopen=function(){e.ready=!0;for(var t=0;t<e.queued.length;t++)e.send(e.queued[t])}};n.prototype.send=function(t){if(this.ready){var e=JSON.stringify(t);this.ws.send(e)}else this.queued.push(t)},n.prototype.onMessage=function(t){this.handlers.push(t)},n.prototype.unload=function(){this.ws.close()},Object.defineProperty(n.prototype,"onmessage",{set:function(t){this.onMessage(t)}}),"undefined"!=typeof e&&(e.exports=n)},{}],web3:[function(t,e){var n=t("./lib/web3");n.providers.WebSocketProvider=t("./lib/websocket"),n.providers.HttpRpcProvider=t("./lib/httprpc"),n.providers.QtProvider=t("./lib/qt"),n.providers.AutoProvider=t("./lib/autoprovider"),n.eth.contract=t("./lib/contract"),e.exports=n},{"./lib/autoprovider":2,"./lib/contract":3,"./lib/httprpc":5,"./lib/qt":7,"./lib/web3":8,"./lib/websocket":9}]},{},["web3"]);
\ No newline at end of file
diff --git a/example/contract.html b/example/contract.html
index 403d8c9d1..9666678a8 100644
--- a/example/contract.html
+++ b/example/contract.html
@@ -43,7 +43,7 @@
 
         // create contract
         web3.eth.transact({code: web3.eth.solidity(source)}).then(function (address) {
-            contract = web3.contract(address, desc);
+            contract = web3.eth.contract(address, desc);
             document.getElementById('call').style.visibility = 'visible';
         });
     }
diff --git a/index.js b/index.js
index 99ce66fad..b23cf29d2 100644
--- a/index.js
+++ b/index.js
@@ -3,6 +3,6 @@ web3.providers.WebSocketProvider = require('./lib/websocket');
 web3.providers.HttpRpcProvider = require('./lib/httprpc');
 web3.providers.QtProvider = require('./lib/qt');
 web3.providers.AutoProvider = require('./lib/autoprovider');
-web3.contract = require('./lib/contract');
+web3.eth.contract = require('./lib/contract');
 
 module.exports = web3;
diff --git a/lib/abi.js b/lib/abi.js
index 1a88317bc..b51fbab59 100644
--- a/lib/abi.js
+++ b/lib/abi.js
@@ -35,6 +35,10 @@ var decToHex = function (dec) {
     return parseInt(dec).toString(16);
 };
 
+/// 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;
@@ -44,106 +48,96 @@ var findIndex = function (array, callback) {
     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;
     });
 };
 
-var padLeft = function (string, chars) {
-    return new Array(chars - string.length + 1).join("0") + string;
+/// @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;
 };
 
-var calcBitPadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    return parseInt(value) / 8;
-};
-
-var calcBytePadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    return parseInt(value);
+/// @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;
+    };
 };
 
-var calcRealPadding = function (type, expected) {
-    var value = type.slice(expected.length);
-    if (value === "") {
-        return 32;
-    }
-    var sizes = value.split('x');
-    for (var padding = 0, i = 0; i < sizes; i++) {
-        padding += (sizes[i] / 8);
-    }
-    return padding;
+/// @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 setupInputTypes = function () {
     
-    // convert from int, decimal-string, prefixed hex string whatever into a bare hex string.
-    var formatStandard = function (value) {
-        if (typeof value === "number")
-            return value.toString(16);
-        else if (typeof value === "string" && value.indexOf('0x') === 0)
-            return value.substr(2);
-        else if (typeof value === "string")
-            return web3.toHex(value);
-        else
-            return (+value).toString(16);
-    };
-
-    var prefixedType = function (prefix, calcPadding) {
-        return function (type, value) {
-            var expected = prefix;
-            if (type.indexOf(expected) !== 0) {
-                return false;
+    /// Formats input value to byte representation of int
+    /// @returns right-aligned byte representation of int
+    var formatInt = function (value) {
+        var padding = 32 * 2;
+        if (typeof value === 'number') {
+            if (value < 0) {
+                
+                // two's complement
+                // TODO: fix big numbers support
+                value = ((value) >>> 0).toString(16);
+                return padLeft(value, padding, 'f');
             }
+            value = value.toString(16);
 
-            var padding = calcPadding(type, expected);
-            if (padding > 32)
-                return false;   // not allowed to be so big.
-            padding = 32;   // override as per the new ABI.
-
-            if (prefix === "string")
-                return web3.fromAscii(value, padding).substr(2);
-            return padLeft(formatStandard(value), padding * 2);
-        };
+        }
+        else if (value.indexOf('0x') === 0)
+            value = value.substr(2);
+        else if (typeof value === 'string')
+            value = value.toHex(value);
+        else
+            value = (+value).toString(16);
+        return padLeft(value, padding);
     };
 
-    var namedType = function (name, padding, formatter) {
-        return function (type, value) {
-            if (type !== name) {
-                return false;
-            }
-
-            padding = 32;   //override as per the new ABI.
-
-            return padLeft(formatter ? formatter(value) : value, padding * 2);
-        };
+    /// Formats input value to byte representation of string
+    /// @returns left-algined byte representation of string
+    var formatString = function (value) {
+        return web3.fromAscii(value, 32).substr(2);
     };
 
+    /// Formats input value to byte representation of bool
+    /// @returns right-aligned byte representation bool
     var formatBool = function (value) {
-        return value ? '01' : '00';
+        return '000000000000000000000000000000000000000000000000000000000000000' + (value ?  '1' : '0');
     };
 
     return [
-        prefixedType('uint', calcBitPadding),
-        prefixedType('int', calcBitPadding),
-        prefixedType('hash', calcBitPadding),
-        prefixedType('string', calcBytePadding),
-        prefixedType('real', calcRealPadding),
-        prefixedType('ureal', calcRealPadding),
-        namedType('address', 20, formatStandard),
-        namedType('bool', 1, formatBool),
+        { type: prefixedType('uint'), format: formatInt },
+        { type: prefixedType('int'), format: formatInt },
+        { type: prefixedType('hash'), format: formatInt },
+        { type: prefixedType('string'), format: formatString }, 
+        { type: prefixedType('real'), format: formatInt },
+        { type: prefixedType('ureal'), format: formatInt },
+        { type: namedType('address'), format: formatInt },
+        { type: namedType('bool'), format: formatBool }
     ];
 };
 
 var inputTypes = setupInputTypes();
 
+/// Formats input params to bytes
+/// @param contract json abi
+/// @param name of the method that we want to use
+/// @param array of params that will be formatted to bytes
+/// @returns bytes representation of input params
 var toAbiInput = function (json, methodName, params) {
     var bytes = "";
     var index = findMethodIndex(json, methodName);
@@ -153,74 +147,72 @@ var toAbiInput = function (json, methodName, params) {
     }
 
     var method = json[index];
+    var padding = 32 * 2;
 
     for (var i = 0; i < method.inputs.length; i++) {
-        var found = false;
-        for (var j = 0; j < inputTypes.length && !found; j++) {
-            found = inputTypes[j](method.inputs[i].type, params[i]);
+        var typeMatch = false;
+        for (var j = 0; j < inputTypes.length && !typeMatch; j++) {
+            typeMatch = inputTypes[j].type(method.inputs[i].type, params[i]);
         }
-        if (!found) {
-            console.error('unsupported json type: ' + method.inputs[i].type);
+        if (!typeMatch) {
+            console.error('input parser does not support type: ' + method.inputs[i].type);
         }
-        bytes += found;
+
+        var formatter = inputTypes[j - 1].format;
+        bytes += (formatter ? formatter(params[i]) : params[i]);
     }
     return bytes;
 };
 
+/// Setups output formaters for solidity types
+/// @returns an array of output formatters
 var setupOutputTypes = function () {
 
-    var prefixedType = function (prefix, calcPadding) {
-        return function (type) {
-            var expected = prefix;
-            if (type.indexOf(expected) !== 0) {
-                return -1;
-            }
-
-            var padding = calcPadding(type, expected);
-            if (padding > 32)
-                return -1;   // not allowed to be so big.
-            padding = 32;  // override as per the new ABI.
-            return padding * 2;
-        };
-    };
-
-    var namedType = function (name, padding) {
-        return function (type) {
-            padding = 32;  // override as per the new ABI.
-            return name === type ? padding * 2 : -1;
-        };
-    };
-
+    /// Formats input right-aligned input bytes to int
+    /// @returns right-aligned input bytes formatted to int
     var formatInt = function (value) {
         return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);
     };
 
+    /// @returns right-aligned input bytes formatted to hex
     var formatHash = function (value) {
         return "0x" + value;
     };
 
+    /// @returns right-aligned input bytes formatted to bool
     var formatBool = function (value) {
-        return value === '1' ? true : false;
+        return value === '0000000000000000000000000000000000000000000000000000000000000001' ? true : false;
     };
 
+    /// @returns left-aligned input bytes formatted to ascii string
     var formatString = function (value) {
         return web3.toAscii(value);
     };
 
+    /// @returns right-aligned input bytes formatted to address
+    var formatAddress = function (value) {
+        return "0x" + value.slice(value.length - 40, value.length);
+    };
+
     return [
-    { padding: prefixedType('uint', calcBitPadding), format: formatInt },
-    { padding: prefixedType('int', calcBitPadding), format: formatInt },
-    { padding: prefixedType('hash', calcBitPadding), format: formatHash },
-    { padding: prefixedType('string', calcBytePadding), format: formatString },
-    { padding: prefixedType('real', calcRealPadding), format: formatInt },
-    { padding: prefixedType('ureal', calcRealPadding), format: formatInt },
-    { padding: namedType('address', 20) },
-    { padding: namedType('bool', 1), format: formatBool }
+        { type: prefixedType('uint'), format: formatInt },
+        { type: prefixedType('int'), format: formatInt },
+        { type: prefixedType('hash'), format: formatHash },
+        { type: prefixedType('string'), format: formatString },
+        { type: prefixedType('real'), format: formatInt },
+        { type: prefixedType('ureal'), format: formatInt },
+        { type: namedType('address'), format: formatAddress },
+        { type: namedType('bool'), format: formatBool }
     ];
 };
 
 var outputTypes = setupOutputTypes();
 
+/// Formats output bytes back to param list
+/// @param contract json abi
+/// @param name of the method that we want to use
+/// @param bytes representtion of output 
+/// @returns array of output params 
 var fromAbiOutput = function (json, methodName, output) {
     var index = findMethodIndex(json, methodName);
 
@@ -232,14 +224,16 @@ var fromAbiOutput = function (json, methodName, output) {
 
     var result = [];
     var method = json[index];
+    var padding = 32 * 2;
     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);
+        var typeMatch = false;
+        for (var j = 0; j < outputTypes.length && !typeMatch; j++) {
+            typeMatch = outputTypes[j].type(method.outputs[i].type);
         }
 
-        if (padding === -1) {
+        if (!typeMatch) {
             // not found output parsing
+            console.error('output parser does not support type: ' + method.outputs[i].type);
             continue;
         }
         var res = output.slice(0, padding);
@@ -251,6 +245,8 @@ var fromAbiOutput = function (json, methodName, output) {
     return result;
 };
 
+/// @param json abi for contract
+/// @returns input parser object for given json abi
 var inputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
@@ -263,6 +259,8 @@ var inputParser = function (json) {
     return parser;
 };
 
+/// @param json abi for contract
+/// @returns output parser for given json abi
 var outputParser = function (json) {
     var parser = {};
     json.forEach(function (method) {
@@ -274,6 +272,9 @@ var outputParser = function (json) {
     return parser;
 };
 
+/// @param json abi for contract
+/// @param method name for which we want to get method signature
+/// @returns (promise) contract method signature for method with given name
 var methodSignature = function (json, name) {
     var method = json[findMethodIndex(json, name)];
     var result = name + '(';
diff --git a/lib/autoprovider.js b/lib/autoprovider.js
index 113873674..a2c265ccb 100644
--- a/lib/autoprovider.js
+++ b/lib/autoprovider.js
@@ -33,6 +33,16 @@ if (process.env.NODE_ENV !== 'build') {
     var web3 = require('./web3'); // jshint ignore:line
 }
 
+/**
+ * AutoProvider object prototype is implementing 'provider protocol'
+ * Automatically tries to setup correct provider(Qt, WebSockets or HttpRpc)
+ * First it checkes if we are ethereum browser (if navigator.qt object is available)
+ * if yes, we are using QtProvider
+ * if no, we check if it is possible to establish websockets connection with ethereum (ws://localhost:40404/eth is default)
+ * if it's not possible, we are using httprpc provider (http://localhost:8080)
+ * The constructor allows you to specify uris on which we are trying to connect over http or websockets
+ * You can do that by passing objects with fields httrpc and websockets
+ */
 var AutoProvider = function (userOptions) {
     if (web3.haveProvider()) {
         return;
@@ -81,6 +91,8 @@ var AutoProvider = function (userOptions) {
     };
 };
 
+/// Sends message forward to the provider, that is being used
+/// if provider is not yet set, enqueues the message
 AutoProvider.prototype.send = function (payload) {
     if (this.provider) {
         this.provider.send(payload);
@@ -89,6 +101,7 @@ AutoProvider.prototype.send = function (payload) {
     this.sendQueue.push(payload);
 };
 
+/// On incoming message sends the message to the provider that is currently being used
 Object.defineProperty(AutoProvider.prototype, 'onmessage', {
     set: function (handler) {
         if (this.provider) {
diff --git a/lib/contract.js b/lib/contract.js
index eb7fbf018..52ce08705 100644
--- a/lib/contract.js
+++ b/lib/contract.js
@@ -27,9 +27,29 @@ if (process.env.NODE_ENV !== 'build') {
 
 var abi = require('./abi');
 
-// method signature length in bytes
+/// method signature length in bytes
 var ETH_METHOD_SIGNATURE_LENGTH = 4;
 
+/**
+ * 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').call(); // myMethod call
+ * myContract.myMethod('this is test string param for transact').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) {
     var inputParser = abi.inputParser(desc);
     var outputParser = abi.outputParser(desc);
@@ -70,3 +90,4 @@ var contract = function (address, desc) {
 };
 
 module.exports = contract;
+
diff --git a/lib/filter.js b/lib/filter.js
new file mode 100644
index 000000000..47f5a070c
--- /dev/null
+++ b/lib/filter.js
@@ -0,0 +1,89 @@
+/*
+    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 filter.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: is these line is supposed to be here? 
+if (process.env.NODE_ENV !== 'build') {
+    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
+var 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);
+    });
+};
+
+/// alias for changed*
+Filter.prototype.arrived = function(callback) {
+    this.changed(callback);
+};
+
+/// gets called when there is new eth/shh message
+Filter.prototype.changed = function(callback) {
+    var self = this;
+    this.promise.then(function(id) {
+        self.callbacks.push(callback);
+    });
+};
+
+/// trigger calling new message from people
+Filter.prototype.trigger = function(messages) {
+    for(var i = 0; i < this.callbacks.length; i++) {
+        this.callbacks[i].call(this, messages);
+    }
+};
+
+/// should be called to uninstall current filter
+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);
+    });
+};
+
+/// should be called to manually trigger getting latest messages from the client
+Filter.prototype.messages = function() {
+    var self = this;
+    return this.promise.then(function (id) {
+        return self.impl.getMessages(id);
+    });
+};
+
+/// alias for messages
+Filter.prototype.logs = function () {
+    return this.messages();
+};
+
+module.exports = Filter;
diff --git a/lib/httprpc.js b/lib/httprpc.js
index d315201f1..de3ae8478 100644
--- a/lib/httprpc.js
+++ b/lib/httprpc.js
@@ -26,11 +26,21 @@ if (process.env.NODE_ENV !== 'build') {
     var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
 }
 
+/**
+ * HttpRpcProvider object prototype is implementing 'provider protocol'
+ * Should be used when we want to connect to ethereum backend over http && jsonrpc
+ * It's compatible with cpp client
+ * The contructor allows to specify host uri
+ * This provider is using in-browser polling mechanism
+ */
 var HttpRpcProvider = function (host) {
     this.handlers = [];
     this.host = host;
 };
 
+/// Transforms inner message to proper jsonrpc object
+/// @param inner message object
+/// @returns jsonrpc object
 function formatJsonRpcObject(object) {
     return {
         jsonrpc: '2.0',
@@ -40,6 +50,9 @@ function formatJsonRpcObject(object) {
     };
 }
 
+/// Transforms jsonrpc object to inner message
+/// @param incoming jsonrpc message 
+/// @returns inner message object
 function formatJsonRpcMessage(message) {
     var object = JSON.parse(message);
 
@@ -50,6 +63,10 @@ function formatJsonRpcMessage(message) {
     };
 }
 
+/// Prototype object method 
+/// Asynchronously sends request to server
+/// @param payload is inner message object
+/// @param cb is callback which is being called when response is comes back
 HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
     var data = formatJsonRpcObject(payload);
 
@@ -63,6 +80,11 @@ HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to server
+/// Asynchronous
+/// On response it passes message to handlers
+/// @param payload is inner message object
 HttpRpcProvider.prototype.send = function (payload) {
     var self = this;
     this.sendRequest(payload, function (request) {
@@ -72,6 +94,13 @@ HttpRpcProvider.prototype.send = function (payload) {
     });
 };
 
+/// Prototype object method
+/// Should be called only for polling requests
+/// Asynchronous
+/// On response it passege message to handlers, but only if message's result is true or not empty array
+/// Otherwise response is being silently ignored
+/// @param payload is inner message object
+/// @id is id of poll that we are calling
 HttpRpcProvider.prototype.poll = function (payload, id) {
     var self = this;
     this.sendRequest(payload, function (request) {
@@ -85,6 +114,8 @@ HttpRpcProvider.prototype.poll = function (payload, id) {
     });
 };
 
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
     set: function (handler) {
         this.handlers.push(handler);
@@ -92,3 +123,4 @@ Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
 });
 
 module.exports = HttpRpcProvider;
+
diff --git a/lib/providermanager.js b/lib/providermanager.js
new file mode 100644
index 000000000..00266154d
--- /dev/null
+++ b/lib/providermanager.js
@@ -0,0 +1,122 @@
+/*
+    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 providermanager.js
+ * @authors:
+ *   Jeffrey Wilcke <jeff@ethdev.com>
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ *   Gav Wood <g@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: is these line is supposed to be here? 
+if (process.env.NODE_ENV !== 'build') {
+    var web3 = require('./web3'); // jshint ignore:line
+}
+
+/**
+ * Provider manager object prototype
+ * It's responsible for passing messages to providers
+ * If no provider is set it's responsible for queuing requests
+ * It's also responsible for polling the ethereum node for incoming messages
+ * Default poll timeout is 12 seconds
+ * If we are running ethereum.js inside ethereum browser, there are backend based tools responsible for polling,
+ * and provider manager polling mechanism is not used
+ */
+var ProviderManager = function() {
+    this.queued = [];
+    this.polls = [];
+    this.ready = false;
+    this.provider = undefined;
+    this.id = 1;
+
+    var self = this;
+    var poll = function () {
+        if (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, 12000);
+    };
+    poll();
+};
+
+/// sends outgoing requests, if provider is not available, enqueue the request
+ProviderManager.prototype.send = function(data, cb) {
+    data._id = this.id;
+    if (cb) {
+        web3._callbacks[data._id] = cb;
+    }
+
+    data.args = data.args || [];
+    this.id++;
+
+    if(this.provider !== undefined) {
+        this.provider.send(data);
+    } else {
+        console.warn("provider is not set");
+        this.queued.push(data);
+    }
+};
+
+/// setups provider, which will be used for sending messages
+ProviderManager.prototype.set = function(provider) {
+    if(this.provider !== undefined && this.provider.unload !== undefined) {
+        this.provider.unload();
+    }
+
+    this.provider = provider;
+    this.ready = true;
+};
+
+/// resends queued messages
+ProviderManager.prototype.sendQueued = function() {
+    for(var i = 0; this.queued.length; i++) {
+        // Resend
+        this.send(this.queued[i]);
+    }
+};
+
+/// @returns true if the provider i properly set
+ProviderManager.prototype.installed = function() {
+    return this.provider !== undefined;
+};
+
+/// this method is only used, when we do not have native qt bindings and have to do polling on our own
+/// should be callled, on start watching for eth/shh changes
+ProviderManager.prototype.startPolling = function (data, pollId) {
+    if (!this.provider || !this.provider.poll) {
+        return;
+    }
+    this.polls.push({data: data, id: pollId});
+};
+
+/// should be called to stop polling for certain watch changes
+ProviderManager.prototype.stopPolling = function (pollId) {
+    for (var i = this.polls.length; i--;) {
+        var poll = this.polls[i];
+        if (poll.id === pollId) {
+            this.polls.splice(i, 1);
+        }
+    }
+};
+
+module.exports = ProviderManager;
+
diff --git a/lib/qt.js b/lib/qt.js
index f02239547..1b3a9547b 100644
--- a/lib/qt.js
+++ b/lib/qt.js
@@ -21,6 +21,11 @@
  * @date 2014
  */
 
+/**
+ * QtProvider object prototype is implementing 'provider protocol'
+ * Should be used inside ethereum browser. It's compatible with cpp and go clients.
+ * It uses navigator.qt object to pass the messages to native bindings
+ */
 var QtProvider = function() {
     this.handlers = [];
 
@@ -32,10 +37,17 @@ var QtProvider = function() {
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to native bindings
+/// Asynchronous
+/// Response will be received by navigator.qt.onmessage method and passed to handlers
+/// @param payload is inner message object
 QtProvider.prototype.send = function(payload) {
     navigator.qt.postMessage(JSON.stringify(payload));
 };
 
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(QtProvider.prototype, "onmessage", {
     set: function(handler) {
         this.handlers.push(handler);
diff --git a/lib/web3.js b/lib/web3.js
index 4220114f9..25c2901a8 100644
--- a/lib/web3.js
+++ b/lib/web3.js
@@ -14,7 +14,7 @@
     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 main.js
+/** @file web3.js
  * @authors:
  *   Jeffrey Wilcke <jeff@ethdev.com>
  *   Marek Kotewicz <marek@ethdev.com>
@@ -23,6 +23,12 @@
  * @date 2014
  */
 
+var Filter = require('./filter');
+var ProviderManager = require('./providermanager');
+
+/// Recursively resolves all promises in given object and replaces the resolved values with promises
+/// @param any object/array/promise/anything else..
+/// @returns (resolves) object with replaced promises with their result 
 function flattenPromise (obj) {
     if (obj instanceof Promise) {
         return Promise.resolve(obj);
@@ -62,12 +68,14 @@ function flattenPromise (obj) {
     return Promise.resolve(obj);
 }
 
+/// @returns an array of objects describing web3 api methods
 var web3Methods = function () {
     return [
     { name: 'sha3', call: 'web3_sha3' }
     ];
 };
 
+/// @returns an array of objects describing web3.eth api methods
 var ethMethods = function () {
     var blockCall = function (args) {
         return typeof args[0] === "string" ? "eth_blockByHash" : "eth_blockByNumber";
@@ -101,6 +109,7 @@ var ethMethods = function () {
     return methods;
 };
 
+/// @returns an array of objects describing web3.eth api properties
 var ethProperties = function () {
     return [
     { name: 'coinbase', getter: 'eth_coinbase', setter: 'eth_setCoinbase' },
@@ -115,6 +124,7 @@ var ethProperties = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.db api methods
 var dbMethods = function () {
     return [
     { name: 'put', call: 'db_put' },
@@ -124,6 +134,7 @@ var dbMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.shh api methods
 var shhMethods = function () {
     return [
     { name: 'post', call: 'shh_post' },
@@ -134,6 +145,7 @@ var shhMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.eth.watch api methods
 var ethWatchMethods = function () {
     var newFilter = function (args) {
         return typeof args[0] === 'string' ? 'eth_newFilterString' : 'eth_newFilter';
@@ -146,6 +158,7 @@ var ethWatchMethods = function () {
     ];
 };
 
+/// @returns an array of objects describing web3.shh.watch api methods
 var shhWatchMethods = function () {
     return [
     { name: 'newFilter', call: 'shh_newFilter' },
@@ -154,6 +167,8 @@ var shhWatchMethods = function () {
     ];
 };
 
+/// creates methods in a given object based on method description on input
+/// setups api calls for these methods
 var setupMethods = function (obj, methods) {
     methods.forEach(function (method) {
         obj[method.name] = function () {
@@ -177,6 +192,8 @@ var setupMethods = function (obj, methods) {
     });
 };
 
+/// creates properties in a given object based on properties description on input
+/// setups api calls for these properties
 var setupProperties = function (obj, properties) {
     properties.forEach(function (property) {
         var proto = {};
@@ -221,7 +238,7 @@ var decToHex = function (dec) {
     return parseInt(dec).toString(16);
 };
 
-
+/// setups web3 object, and it's in-browser executed methods
 var web3 = {
     _callbacks: {},
     _events: {},
@@ -237,6 +254,7 @@ var web3 = {
         return hex;
     },
 
+    /// @returns ascii string representation of hex value prefixed with 0x
     toAscii: function(hex) {
         // Find termination
         var str = "";
@@ -244,17 +262,18 @@ var web3 = {
         if (hex.substring(0, 2) === '0x')
             i = 2;
         for(; i < l; i+=2) {
-            var code = hex.charCodeAt(i);
+            var code = parseInt(hex.substr(i, 2), 16);
             if(code === 0) {
                 break;
             }
 
-            str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
+            str += String.fromCharCode(code);
         }
 
         return str;
     },
 
+    /// @returns hex representation (prefixed by 0x) of ascii string
     fromAscii: function(str, pad) {
         pad = pad === undefined ? 0 : pad;
         var hex = this.toHex(str);
@@ -263,14 +282,17 @@ var web3 = {
         return "0x" + hex;
     },
 
+    /// @returns decimal representaton of hex value prefixed by 0x
     toDecimal: function (val) {
         return hexToDec(val.substring(2));
     },
 
+    /// @returns hex representation (prefixed by 0x) of decimal value
     fromDecimal: function (val) {
         return "0x" + decToHex(val);
     },
 
+    /// used to transform value/string to eth string
     toEth: function(str) {
         var val = typeof str === "string" ? str.indexOf('0x') === 0 ? parseInt(str.substr(2), 16) : parseInt(str) : str;
         var unit = 0;
@@ -294,24 +316,24 @@ var web3 = {
         return s + ' ' + units[unit];
     },
 
+    /// eth object prototype
     eth: {
-        prototype: Object(), // jshint ignore:line
         watch: function (params) {
             return new Filter(params, ethWatch);
         }
     },
 
-    db: {
-        prototype: Object() // jshint ignore:line
-    },
+    /// db object prototype
+    db: {},
 
+    /// shh object prototype
     shh: {
-        prototype: Object(), // jshint ignore:line
         watch: function (params) {
             return new Filter(params, shhWatch);
         }
     },
 
+    /// used by filter to register callback with given id
     on: function(event, id, cb) {
         if(web3._events[event] === undefined) {
             web3._events[event] = {};
@@ -321,6 +343,7 @@ var web3 = {
         return this;
     },
 
+    /// used by filter to unregister callback with given id
     off: function(event, id) {
         if(web3._events[event] !== undefined) {
             delete web3._events[event][id];
@@ -329,6 +352,7 @@ var web3 = {
         return this;
     },
 
+    /// used to trigger callback registered by filter
     trigger: function(event, id, data) {
         var callbacks = web3._events[event];
         if (!callbacks || !callbacks[id]) {
@@ -336,9 +360,15 @@ var web3 = {
         }
         var cb = callbacks[id];
         cb(data);
+    },
+
+    /// @returns true if provider is installed
+    haveProvider: function() {
+        return !!web3.provider.provider;
     }
 };
 
+/// setups all api methods
 setupMethods(web3, web3Methods());
 setupMethods(web3.eth, ethMethods());
 setupProperties(web3.eth, ethProperties());
@@ -348,85 +378,14 @@ setupMethods(web3.shh, shhMethods());
 var ethWatch = {
     changed: 'eth_changed'
 };
+
 setupMethods(ethWatch, ethWatchMethods());
+
 var shhWatch = {
     changed: 'shh_changed'
 };
-setupMethods(shhWatch, shhWatchMethods());
-
-var ProviderManager = function() {
-    this.queued = [];
-    this.polls = [];
-    this.ready = false;
-    this.provider = undefined;
-    this.id = 1;
-
-    var self = this;
-    var poll = function () {
-        if (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, 12000);
-    };
-    poll();
-};
-
-ProviderManager.prototype.send = function(data, cb) {
-    data._id = this.id;
-    if (cb) {
-        web3._callbacks[data._id] = cb;
-    }
-
-    data.args = data.args || [];
-    this.id++;
-
-    if(this.provider !== undefined) {
-        this.provider.send(data);
-    } else {
-        console.warn("provider is not set");
-        this.queued.push(data);
-    }
-};
-
-ProviderManager.prototype.set = function(provider) {
-    if(this.provider !== undefined && this.provider.unload !== undefined) {
-        this.provider.unload();
-    }
-
-    this.provider = provider;
-    this.ready = true;
-};
-
-ProviderManager.prototype.sendQueued = function() {
-    for(var i = 0; this.queued.length; i++) {
-        // Resend
-        this.send(this.queued[i]);
-    }
-};
-
-ProviderManager.prototype.installed = function() {
-    return this.provider !== undefined;
-};
-
-ProviderManager.prototype.startPolling = function (data, pollId) {
-    if (!this.provider || !this.provider.poll) {
-        return;
-    }
-    this.polls.push({data: data, id: pollId});
-};
 
-ProviderManager.prototype.stopPolling = function (pollId) {
-    for (var i = this.polls.length; i--;) {
-        var poll = this.polls[i];
-        if (poll.id === pollId) {
-            this.polls.splice(i, 1);
-        }
-    }
-};
+setupMethods(shhWatch, shhWatchMethods());
 
 web3.provider = new ProviderManager();
 
@@ -436,60 +395,7 @@ web3.setProvider = function(provider) {
     web3.provider.sendQueued();
 };
 
-web3.haveProvider = function() {
-    return !!web3.provider.provider;
-};
-
-var 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);
-    });
-};
-
-Filter.prototype.logs = function () {
-    return this.messages();
-};
-
+/// callled when there is new incoming message
 function messageHandler(data) {
     if(data._event !== undefined) {
         web3.trigger(data._event, data._id, data.data);
diff --git a/lib/websocket.js b/lib/websocket.js
index 5b40075e4..e8663ecf5 100644
--- a/lib/websocket.js
+++ b/lib/websocket.js
@@ -27,9 +27,17 @@ if (process.env.NODE_ENV !== 'build') {
     var WebSocket = require('ws'); // jshint ignore:line
 }
 
+/**
+ * WebSocketProvider object prototype is implementing 'provider protocol'
+ * Should be used when we want to connect to ethereum backend over websockets
+ * It's compatible with go client
+ * The constructor allows to specify host uri
+ */
 var WebSocketProvider = function(host) {
+
     // onmessage handlers
     this.handlers = [];
+
     // queue will be filled with messages if send is invoked before the ws is ready
     this.queued = [];
     this.ready = false;
@@ -46,15 +54,20 @@ var WebSocketProvider = function(host) {
     this.ws.onopen = function() {
         self.ready = true;
 
-        for(var i = 0; i < self.queued.length; i++) {
+        for (var i = 0; i < self.queued.length; i++) {
             // Resend
             self.send(self.queued[i]);
         }
     };
 };
 
+/// Prototype object method
+/// Should be called when we want to send single api request to server
+/// Asynchronous, it's using websockets
+/// Response for the call will be received by ws.onmessage
+/// @param payload is inner message object
 WebSocketProvider.prototype.send = function(payload) {
-    if(this.ready) {
+    if (this.ready) {
         var data = JSON.stringify(payload);
 
         this.ws.send(data);
@@ -63,13 +76,20 @@ WebSocketProvider.prototype.send = function(payload) {
     }
 };
 
+/// Prototype object method
+/// Should be called to add handlers
 WebSocketProvider.prototype.onMessage = function(handler) {
     this.handlers.push(handler);
 };
 
+/// Prototype object method
+/// Should be called to close websockets connection
 WebSocketProvider.prototype.unload = function() {
     this.ws.close();
 };
+
+/// Prototype object property
+/// Should be used to set message handlers for this provider
 Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
     set: function(provider) { this.onMessage(provider); }
 });
diff --git a/test/abi.parsers.js b/test/abi.parsers.js
index 06a77fb86..925324461 100644
--- a/test/abi.parsers.js
+++ b/test/abi.parsers.js
@@ -1,37 +1,547 @@
 var assert = require('assert');
 var abi = require('../lib/abi.js');
+var clone = function (object) { return JSON.parse(JSON.stringify(object)); };
+
+var description =  [{
+    "name": "test",
+    "inputs": [{
+        "name": "a",
+        "type": "uint256"
+    }
+    ],
+    "outputs": [
+    {
+        "name": "d",
+        "type": "uint256"
+    }
+    ]
+}];
 
 describe('abi', function() {
     describe('inputParser', function() {
-        it('should parse ...', function() {
-
-            var desc =  [{
-                "name": "multiply",
-                "inputs": [
-                {
-                    "name": "a",
-                    "type": "uint256"
-                }
-                ],
-                "outputs": [
-                {
-                    "name": "d",
-                    "type": "uint256"
-                }
-                ]
+        it('should parse input uint', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "uint" }
+            ];
+            
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+
+        });
+
+        it('should parse input uint128', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "uint128" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+
+        });
+        
+        it('should parse input uint256', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "uint256" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+            
+        });
+
+        it('should parse input int', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "int" }
+            ];
+            
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+            assert.equal(parser.test(-1), "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
+            assert.equal(parser.test(-2), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe");
+            assert.equal(parser.test(-16), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0");
+
+        });
+
+        it('should parse input int128', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "int128" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+            assert.equal(parser.test(-1), "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
+            assert.equal(parser.test(-2), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe");
+            assert.equal(parser.test(-16), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0");
+
+        });
+
+        it('should parse input int256', function() {
+        
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "int256" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(10), "000000000000000000000000000000000000000000000000000000000000000a");
+            assert.equal(parser.test(-1), "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
+            assert.equal(parser.test(-2), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe");
+            assert.equal(parser.test(-16), "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0");
+            
+        });
+
+        it('should parse input bool', function() {
+            
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: 'bool' }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test(true), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test(false), "0000000000000000000000000000000000000000000000000000000000000000");
+
+        });
+
+        it('should parse input hash', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "hash" }
+            ];
+            
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test("0x407d73d8a49eeb85d32cf465507dd71d507100c1"), "000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1");
+
+        }); 
+
+        it('should parse input hash256', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "hash256" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test("0x407d73d8a49eeb85d32cf465507dd71d507100c1"), "000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1");
+
+        });
+
+
+        it('should parse input hash160', function() {
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "hash160" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+            
+            // then
+            assert.equal(parser.test("0x407d73d8a49eeb85d32cf465507dd71d507100c1"), "000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1");
+        });
+
+        it('should parse input address', function () {
+
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "address" }
+            ];
+            
+            // when
+            var parser = abi.inputParser(d)
+            
+            // then
+            assert.equal(parser.test("0x407d73d8a49eeb85d32cf465507dd71d507100c1"), "000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1");
+
+        });
+
+        it('should parse input string', function () {
+            
+            // given
+            var d = clone(description);
+
+            d[0].inputs = [
+                { type: "string" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.test('hello'), "68656c6c6f000000000000000000000000000000000000000000000000000000");
+            assert.equal(parser.test('world'), "776f726c64000000000000000000000000000000000000000000000000000000");
+        });
+
+        it('should use proper method name', function () {
+        
+            // given
+            var d = clone(description);
+            d[0].name = 'helloworld';
+            d[0].inputs = [
+                { type: "int" }
+            ];
+
+            // when
+            var parser = abi.inputParser(d);
+
+            // then
+            assert.equal(parser.helloworld(1), "0000000000000000000000000000000000000000000000000000000000000001");
+
+        });
+        
+        it('should parse multiple methods', function () {
+            
+            // given
+            var d =  [{
+                name: "test",
+                inputs: [{ type: "int" }],
+                outputs: [{ type: "int" }]
+            },{
+                name: "test2",
+                inputs: [{ type: "string" }],
+                outputs: [{ type: "string" }]
             }];
 
-            var iParser = abi.inputParser(desc);
-            assert.equal(iParser.multiply(1), "0x000000000000000000000000000000000000000000000000000000000000000001");
+            // when
+            var parser = abi.inputParser(d);
+
+            //then
+            assert.equal(parser.test(1), "0000000000000000000000000000000000000000000000000000000000000001");
+            assert.equal(parser.test2('hello'), "68656c6c6f000000000000000000000000000000000000000000000000000000");
 
         });
     });
 
-
     describe('outputParser', function() {
-        it('parse ...', function() {
+        it('should parse output string', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: "string" }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+            
+            // then
+            assert.equal(parser.test("0x68656c6c6f000000000000000000000000000000000000000000000000000000")[0], 'hello');
+            assert.equal(parser.test("0x776f726c64000000000000000000000000000000000000000000000000000000")[0], 'world');
 
         });
+
+        it('should parse output uint', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'uint' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+        
+        it('should parse output uint256', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'uint256' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+
+        it('should parse output uint128', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'uint128' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+
+        it('should parse output int', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'int' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+        
+        it('should parse output int256', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'int256' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+
+        it('should parse output int128', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'int128' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test("0x000000000000000000000000000000000000000000000000000000000000000a")[0], 10);
+        });
+
+        it('should parse output hash', function() {
+            
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'hash' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")[0], "0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")
+        });
+        
+        it('should parse output hash256', function() {
+        
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'hash256' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")[0], "0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")
+        });
+
+        it('should parse output hash160', function() {
+            
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'hash160' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")[0], "0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")
+            // TODO shouldnt' the expected hash be shorter?
+        });
+
+        it('should parse output address', function() {
+            
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'address' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1")[0], "0x407d73d8a49eeb85d32cf465507dd71d507100c1")
+        });
+
+        it('should parse output bool', function() {
+            
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: 'bool' }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("000000000000000000000000000000000000000000000000000000000000000001")[0], true);
+            assert.equal(parser.test("000000000000000000000000000000000000000000000000000000000000000000")[0], false);
+            
+
+        });
+
+        it('should parse multiple output strings', function() {
+
+            // given
+            var d = clone(description);
+
+            d[0].outputs = [
+                { type: "string" },
+                { type: "string" }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.test("0x68656c6c6f000000000000000000000000000000000000000000000000000000776f726c64000000000000000000000000000000000000000000000000000000")[0], 'hello');
+            assert.equal(parser.test("0x68656c6c6f000000000000000000000000000000000000000000000000000000776f726c64000000000000000000000000000000000000000000000000000000")[1], 'world');
+
+        });
+        
+        it('should use proper method name', function () {
+        
+            // given
+            var d = clone(description);
+            d[0].name = 'helloworld';
+            d[0].outputs = [
+                { type: "int" }
+            ];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            // then
+            assert.equal(parser.helloworld("0x0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+
+        });
+
+
+        it('should parse multiple methods', function () {
+            
+            // given
+            var d =  [{
+                name: "test",
+                inputs: [{ type: "int" }],
+                outputs: [{ type: "int" }]
+            },{
+                name: "test2",
+                inputs: [{ type: "string" }],
+                outputs: [{ type: "string" }]
+            }];
+
+            // when
+            var parser = abi.outputParser(d);
+
+            //then
+            assert.equal(parser.test("0000000000000000000000000000000000000000000000000000000000000001")[0], 1);
+            assert.equal(parser.test2("0x68656c6c6f000000000000000000000000000000000000000000000000000000")[0], "hello");
+
+        });
+
     });
 });
 
diff --git a/test/db.methods.js b/test/db.methods.js
index b4abfc4d7..662f4e7cc 100644
--- a/test/db.methods.js
+++ b/test/db.methods.js
@@ -7,12 +7,10 @@ web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080'));
 
 describe('web3', function() {
     describe('db', function() {
-        it('should have all methods implemented', function() {
-            u.methodExists(web3.db, 'put');
-            u.methodExists(web3.db, 'get');
-            u.methodExists(web3.db, 'putString');
-            u.methodExists(web3.db, 'getString');
-        });
+        u.methodExists(web3.db, 'put');
+        u.methodExists(web3.db, 'get');
+        u.methodExists(web3.db, 'putString');
+        u.methodExists(web3.db, 'getString');
     });
 });
 
diff --git a/test/eth.methods.js b/test/eth.methods.js
index 7190b27d2..892db0d8b 100644
--- a/test/eth.methods.js
+++ b/test/eth.methods.js
@@ -7,35 +7,31 @@ web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080'));
 
 describe('web3', function() {
     describe('eth', function() {
-        it('should have all methods implemented', function() {
-            u.methodExists(web3.eth, 'balanceAt');
-            u.methodExists(web3.eth, 'stateAt');
-            u.methodExists(web3.eth, 'storageAt');
-            u.methodExists(web3.eth, 'countAt');
-            u.methodExists(web3.eth, 'codeAt');
-            u.methodExists(web3.eth, 'transact');
-            u.methodExists(web3.eth, 'call');
-            u.methodExists(web3.eth, 'block');
-            u.methodExists(web3.eth, 'transaction');
-            u.methodExists(web3.eth, 'uncle');
-            u.methodExists(web3.eth, 'compilers');
-            u.methodExists(web3.eth, 'lll');
-            u.methodExists(web3.eth, 'solidity');
-            u.methodExists(web3.eth, 'serpent');
-            u.methodExists(web3.eth, 'logs');
-        });
+        u.methodExists(web3.eth, 'balanceAt');
+        u.methodExists(web3.eth, 'stateAt');
+        u.methodExists(web3.eth, 'storageAt');
+        u.methodExists(web3.eth, 'countAt');
+        u.methodExists(web3.eth, 'codeAt');
+        u.methodExists(web3.eth, 'transact');
+        u.methodExists(web3.eth, 'call');
+        u.methodExists(web3.eth, 'block');
+        u.methodExists(web3.eth, 'transaction');
+        u.methodExists(web3.eth, 'uncle');
+        u.methodExists(web3.eth, 'compilers');
+        u.methodExists(web3.eth, 'lll');
+        u.methodExists(web3.eth, 'solidity');
+        u.methodExists(web3.eth, 'serpent');
+        u.methodExists(web3.eth, 'logs');
 
-        it('should have all properties implemented', function () {
-            u.propertyExists(web3.eth, 'coinbase');
-            u.propertyExists(web3.eth, 'listening');
-            u.propertyExists(web3.eth, 'mining');
-            u.propertyExists(web3.eth, 'gasPrice');
-            u.propertyExists(web3.eth, 'account');
-            u.propertyExists(web3.eth, 'accounts');
-            u.propertyExists(web3.eth, 'peerCount');
-            u.propertyExists(web3.eth, 'defaultBlock');
-            u.propertyExists(web3.eth, 'number');
-        });
+        u.propertyExists(web3.eth, 'coinbase');
+        u.propertyExists(web3.eth, 'listening');
+        u.propertyExists(web3.eth, 'mining');
+        u.propertyExists(web3.eth, 'gasPrice');
+        u.propertyExists(web3.eth, 'account');
+        u.propertyExists(web3.eth, 'accounts');
+        u.propertyExists(web3.eth, 'peerCount');
+        u.propertyExists(web3.eth, 'defaultBlock');
+        u.propertyExists(web3.eth, 'number');
     });
 });
 
diff --git a/test/mocha.opts b/test/mocha.opts
index b2db8d5a7..c4a633d64 100644
--- a/test/mocha.opts
+++ b/test/mocha.opts
@@ -1,2 +1,2 @@
---reporter Spec
+--reporter spec 
 
diff --git a/test/shh.methods.js b/test/shh.methods.js
index 08f573a3c..f2f56edbc 100644
--- a/test/shh.methods.js
+++ b/test/shh.methods.js
@@ -7,13 +7,11 @@ web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080'));
 
 describe('web3', function() {
     describe('shh', function() {
-        it('should have all methods implemented', function() {
-            u.methodExists(web3.shh, 'post');
-            u.methodExists(web3.shh, 'newIdentity');
-            u.methodExists(web3.shh, 'haveIdentity');
-            u.methodExists(web3.shh, 'newGroup');
-            u.methodExists(web3.shh, 'addToGroup');
-        });
+        u.methodExists(web3.shh, 'post');
+        u.methodExists(web3.shh, 'newIdentity');
+        u.methodExists(web3.shh, 'haveIdentity');
+        u.methodExists(web3.shh, 'newGroup');
+        u.methodExists(web3.shh, 'addToGroup');
     });
 });
 
diff --git a/test/utils.js b/test/utils.js
index 4c508da67..8617348e4 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -1,11 +1,15 @@
 var assert = require('assert');
 
 var methodExists = function (object, method) {
-    assert.equal('function', typeof object[method], 'method ' + method + ' is not implemented');
+    it('should have method ' + method + ' implemented', function() {
+        assert.equal('function', typeof object[method], 'method ' + method + ' is not implemented');
+    });
 };
 
 var propertyExists = function (object, property) {
-    assert.equal('object', typeof object[property], 'property ' + property + ' is not implemented');
+    it('should have property ' + property + ' implemented', function() {
+        assert.equal('object', typeof object[property], 'property ' + property + ' is not implemented');
+    });
 };
 
 module.exports = {
diff --git a/test/web3.methods.js b/test/web3.methods.js
index a7e020978..5c30177e5 100644
--- a/test/web3.methods.js
+++ b/test/web3.methods.js
@@ -6,13 +6,11 @@ var u = require('./utils.js');
 web3.setProvider(new web3.providers.WebSocketProvider('http://localhost:8080')); // TODO: create some mock provider
 
 describe('web3', function() {
-    it('should have all methods implemented', function() {
-        u.methodExists(web3, 'sha3');
-        u.methodExists(web3, 'toAscii');
-        u.methodExists(web3, 'fromAscii');
-        u.methodExists(web3, 'toFixed');
-        u.methodExists(web3, 'fromFixed');
-        u.methodExists(web3, 'offset');
-    });
+    u.methodExists(web3, 'sha3');
+    u.methodExists(web3, 'toAscii');
+    u.methodExists(web3, 'fromAscii');
+    u.methodExists(web3, 'toFixed');
+    u.methodExists(web3, 'fromFixed');
+    u.methodExists(web3, 'offset');
 });