Official Go implementation of the Ethereum protocol
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go-ethereum/main.js

529 lines
16 KiB

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(function(window) {
function isPromise(o) {
return o instanceof Promise
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}
var web3 = {
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_callbacks: {},
_events: {},
providers: {},
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toHex: function(str) {
var hex = "";
for(var i = 0; i < str.length; i++) {
var n = str.charCodeAt(i).toString(16);
hex += n.length < 2 ? '0' + n : n;
}
return hex;
},
toAscii: function(hex) {
// Find termination
var str = "";
var i = 0, l = hex.length;
for(; i < l; i+=2) {
var code = hex.charCodeAt(i)
if(code == 0) {
break;
}
str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
}
return str;
},
fromAscii: function(str, pad) {
if(pad === undefined) {
pad = 32
}
var hex = this.toHex(str);
while(hex.length < pad*2)
hex += "00";
return hex
},
eth: {
prototype: Object(),
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block: function(numberOrHash) {
return new Promise(function(resolve, reject) {
/*
var func;
if(typeof numberOrHash == "string") {
func = "getBlockByHash";
} else {
func = "getBlockByNumber";
}
*/
web3.provider.send({call: /*func*/"block", args: [numberOrHash]}, function(block) {
if(block)
resolve(block);
else
reject("not found");
});
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});
},
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transaction: function(numberOrHash, nth) {
return new Promise(function(resolve, reject) {
reject("`transaction` not yet implemented")
});
},
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uncle: function(numberOrHash, nth) {
return new Promise(function(resolve, reject) {
reject("`uncle` not yet implemented")
});
},
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transact: function(params) {
if(params === undefined) {
params = {};
}
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if(params.endowment !== undefined)
params.value = params.endowment;
if(params.code !== undefined)
params.data = params.code;
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var promises = []
if(isPromise(params.to)) {
promises.push(params.to.then(function(_to) { params.to = _to; }));
}
if(isPromise(params.from)) {
promises.push(params.from.then(function(_from) { params.from = _from; }));
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}
if(typeof params.data !== "object" || isPromise(params.data)) {
params.data = [params.data]
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}
var data = params.data;
for(var i = 0; i < params.data.length; i++) {
if(isPromise(params.data[i])) {
var promise = params.data[i];
var _i = i;
promises.push(promise.then(function(_arg) { params.data[_i] = _arg; }));
}
}
// Make sure everything is string
var fields = ["value", "gas", "gasPrice"];
for(var i = 0; i < fields.length; i++) {
if(params[fields[i]] === undefined) {
params[fields[i]] = "";
}
params[fields[i]] = params[fields[i]].toString();
}
// Load promises then call the last "transact".
return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
params.data = params.data.join("");
web3.provider.send({call: "transact", args: ["0x"+params]}, function(data) {
if(data[1])
reject(data[0]);
else
resolve(data[0]);
});
});
})
},
compile: function(code) {
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return new Promise(function(resolve, reject) {
web3.provider.send({call: "compile", args: [code]}, function(data) {
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if(data[1])
reject(data[0]);
else
resolve(data[0]);
});
});
},
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balanceAt: function(address) {
var promises = [];
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if(isPromise(address)) {
promises.push(address.then(function(_address) { address = _address; }));
}
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return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "balanceAt", args: [address]}, function(balance) {
resolve(balance);
});
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});
});
},
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countAt: function(address) {
var promises = [];
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if(isPromise(address)) {
promises.push(address.then(function(_address) { address = _address; }));
}
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return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "countAt", args: [address]}, function(count) {
resolve(count);
});
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});
});
},
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codeAt: function(address) {
var promises = [];
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if(isPromise(address)) {
promises.push(address.then(function(_address) { address = _address; }));
}
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return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "codeAt", args: [address]}, function(code) {
resolve(code);
});
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});
});
},
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storageAt: function(address, storageAddress) {
var promises = [];
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if(isPromise(address)) {
promises.push(address.then(function(_address) { address = _address; }));
}
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if(isPromise(storageAddress)) {
promises.push(storageAddress.then(function(_sa) { storageAddress = _sa; }));
}
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return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "stateAt", args: [address, storageAddress]}, function(entry) {
resolve(entry);
});
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});
});
},
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stateAt: function(address, storageAddress) {
return this.storageAt(address, storageAddress);
},
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call: function(params) {
if(params === undefined) {
params = {};
}
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if(params.endowment !== undefined)
params.value = params.endowment;
if(params.code !== undefined)
params.data = params.code;
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var promises = []
if(isPromise(params.to)) {
promises.push(params.to.then(function(_to) { params.to = _to; }));
}
if(isPromise(params.from)) {
promises.push(params.from.then(function(_from) { params.from = _from; }));
}
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if(isPromise(params.data)) {
promises.push(params.data.then(function(_code) { params.data = _code; }));
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} else {
if(typeof params.data === "object") {
data = "";
for(var i = 0; i < params.data.length; i++) {
data += params.data[i]
}
} else {
data = params.data;
}
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}
// Make sure everything is string
var fields = ["value", "gas", "gasPrice"];
for(var i = 0; i < fields.length; i++) {
if(params[fields[i]] === undefined) {
params[fields[i]] = "";
}
params[fields[i]] = params[fields[i]].toString();
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}
// Load promises then call the last "transact".
return Promise.all(promises).then(function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "call", args: params}, function(data) {
if(data[1])
reject(data[0]);
else
resolve(data[0]);
});
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});
})
},
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watch: function(params) {
return new Filter(params);
},
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},
on: function(event, cb) {
if(web3._events[event] === undefined) {
web3._events[event] = [];
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}
web3._events[event].push(cb);
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return this
},
off: function(event, cb) {
if(web3._events[event] !== undefined) {
var callbacks = web3._events[event];
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for(var i = 0; i < callbacks.length; i++) {
if(callbacks[i] === cb) {
delete callbacks[i];
}
}
}
return this
},
trigger: function(event, data) {
var callbacks = web3._events[event];
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if(callbacks !== undefined) {
for(var i = 0; i < callbacks.length; i++) {
// Figure out whether the returned data was an array
// array means multiple return arguments (multiple params)
if(data instanceof Array) {
callbacks[i].apply(this, data);
} else {
callbacks[i].call(this, data);
}
}
}
},
};
var eth = web3.eth;
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// Eth object properties
Object.defineProperty(eth, "key", {
get: function() {
return new Promise(function(resolve, reject) {
eth.provider.send({call: "getKey"}, function(k) {
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resolve(k);
});
});
},
});
Object.defineProperty(eth, "gasPrice", {
get: function() {
return "10000000000000"
}
});
Object.defineProperty(eth, "coinbase", {
get: function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "getCoinBase"}, function(coinbase) {
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resolve(coinbase);
});
});
},
});
Object.defineProperty(eth, "listening", {
get: function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "getIsListening"}, function(listening) {
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resolve(listening);
});
});
},
});
Object.defineProperty(eth, "mining", {
get: function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "getIsMining"}, function(mining) {
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resolve(mining);
});
});
},
});
Object.defineProperty(eth, "peerCount", {
get: function() {
return new Promise(function(resolve, reject) {
web3.provider.send({call: "getPeerCount"}, function(peerCount) {
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resolve(peerCount);
});
});
},
});
var ProviderManager = function() {
this.queued = [];
this.ready = false;
this.provider = undefined;
this.id = 1;
};
ProviderManager.prototype.send = function(data, cb) {
data._id = this.id;
if(cb) {
web3._callbacks[data._id] = cb;
}
if(data.args === undefined) {
data.args = [];
}
this.id++;
if(this.provider !== undefined) {
this.provider.send(data);
} else {
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;
};
web3.provider = new ProviderManager();
web3.setProvider = function(provider) {
provider.onmessage = messageHandler;
web3.provider.set(provider);
web3.provider.sendQueued();
};
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var filters = [];
var Filter = function(options) {
filters.push(this);
this.callbacks = [];
this.options = options;
var call;
if(options === "chain") {
call = "newFilterString"
} else if(typeof options === "object") {
call = "newFilter"
}
var self = this; // Cheaper than binding
this.promise = new Promise(function(resolve, reject) {
web3.provider.send({call: call, args: [options]}, function(id) {
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self.id = id;
resolve(id);
});
});
};
Filter.prototype.changed = function(callback) {
var self = this;
this.promise.then(function(id) {
self.callbacks.push(callback);
});
};
Filter.prototype.trigger = function(messages, id) {
if(id == this.id) {
for(var i = 0; i < this.callbacks.length; i++) {
this.callbacks[i].call(this, messages);
}
}
};
Filter.prototype.uninstall = function() {
this.promise.then(function(id) {
web3.provider.send({call: "uninstallFilter", args:[id]});
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});
};
Filter.prototype.messages = function() {
var self=this;
return Promise.all([this.promise]).then(function() {
var id = self.id
return new Promise(function(resolve, reject) {
web3.provider.send({call: "getMessages", args: [id]}, function(messages) {
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resolve(messages);
});
});
});
};
// Register to the messages callback. "messages" will be emitted when new messages
// from the client have been created.
web3.on("messages", function(messages, id) {
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for(var i = 0; i < filters.length; i++) {
filters[i].trigger(messages, id);
}
});
function messageHandler(ev) {
var data = JSON.parse(ev)
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if(data._event !== undefined) {
web3.trigger(data._event, data.data);
} else {
if(data._id) {
var cb = web3._callbacks[data._id];
if(cb) {
cb.call(this, data.data)
// Remove the "trigger" callback
delete web3._callbacks[ev._id];
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}
}
}
}
/*
// Install default provider
if(!web3.provider.installed()) {
var sock = new web3.WebSocket("ws://localhost:40404/eth");
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web3.setProvider(sock);
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}
*/
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window.web3 = web3;
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})(this);