Refactored file structure

ethereum/javascript_runtime.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"fmt"
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethchain"
+	"github.com/ethereum/eth-go/ethpub"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/robertkrimen/otto"
+)
+
+type JSRE struct {
+	ethereum *eth.Ethereum
+	vm       *otto.Otto
+	lib      *ethpub.PEthereum
+
+	blockChan  chan ethutil.React
+	changeChan chan ethutil.React
+	quitChan   chan bool
+
+	objectCb map[string][]otto.Value
+}
+
+func NewJSRE(ethereum *eth.Ethereum) *JSRE {
+	re := &JSRE{
+		ethereum,
+		otto.New(),
+		ethpub.NewPEthereum(ethereum),
+		make(chan ethutil.React, 1),
+		make(chan ethutil.React, 1),
+		make(chan bool),
+		make(map[string][]otto.Value),
+	}
+
+	// Init the JS lib
+	re.vm.Run(jsLib)
+
+	// We have to make sure that, whoever calls this, calls "Stop"
+	go re.mainLoop()
+
+	re.Bind("eth", &JSEthereum{re.lib, re.vm})
+
+	re.initStdFuncs()
+
+	return re
+}
+
+func (self *JSRE) Bind(name string, v interface{}) {
+	self.vm.Set(name, v)
+}
+
+func (self *JSRE) Run(code string) (otto.Value, error) {
+	return self.vm.Run(code)
+}
+
+func (self *JSRE) Stop() {
+	// Kill the main loop
+	self.quitChan <- true
+
+	close(self.blockChan)
+	close(self.quitChan)
+	close(self.changeChan)
+}
+
+func (self *JSRE) mainLoop() {
+	// Subscribe to events
+	reactor := self.ethereum.Reactor()
+	reactor.Subscribe("newBlock", self.blockChan)
+
+out:
+	for {
+		select {
+		case <-self.quitChan:
+			break out
+		case block := <-self.blockChan:
+			if _, ok := block.Resource.(*ethchain.Block); ok {
+			}
+		case object := <-self.changeChan:
+			if stateObject, ok := object.Resource.(*ethchain.StateObject); ok {
+				for _, cb := range self.objectCb[ethutil.Hex(stateObject.Address())] {
+					val, _ := self.vm.ToValue(ethpub.NewPStateObject(stateObject))
+					cb.Call(cb, val)
+				}
+			} else if storageObject, ok := object.Resource.(*ethchain.StorageState); ok {
+				fmt.Println(storageObject)
+			}
+		}
+	}
+}
+
+func (self *JSRE) initStdFuncs() {
+	t, _ := self.vm.Get("eth")
+	eth := t.Object()
+	eth.Set("watch", func(call otto.FunctionCall) otto.Value {
+		addr, _ := call.Argument(0).ToString()
+		cb := call.Argument(1)
+
+		self.objectCb[addr] = append(self.objectCb[addr], cb)
+
+		event := "object:" + string(ethutil.FromHex(addr))
+		self.ethereum.Reactor().Subscribe(event, self.changeChan)
+
+		return otto.UndefinedValue()
+	})
+	eth.Set("addPeer", func(call otto.FunctionCall) otto.Value {
+		host, err := call.Argument(0).ToString()
+		if err != nil {
+			return otto.FalseValue()
+		}
+		self.ethereum.ConnectToPeer(host)
+
+		return otto.TrueValue()
+	})
+}