Separated the VM from the block manager and added states

ethchain/state.go

@@ -0,0 +1,56 @@
+package ethchain
+
+import (
+	"github.com/ethereum/eth-go/ethutil"
+	"math/big"
+)
+
+type State struct {
+	trie *ethutil.Trie
+}
+
+func NewState(trie *ethutil.Trie) *State {
+	return &State{trie: trie}
+}
+
+func (s *State) GetContract(addr []byte) *Contract {
+	data := s.trie.Get(string(addr))
+	if data == "" {
+		return nil
+	}
+
+	contract := &Contract{}
+	contract.RlpDecode([]byte(data))
+
+	return contract
+}
+
+func (s *State) UpdateContract(addr []byte, contract *Contract) {
+	s.trie.Update(string(addr), string(contract.RlpEncode()))
+}
+
+func Compile(code []string) (script []string) {
+	script = make([]string, len(code))
+	for i, val := range code {
+		instr, _ := ethutil.CompileInstr(val)
+
+		script[i] = string(instr)
+	}
+
+	return
+}
+
+func (s *State) GetAccount(addr []byte) (account *Address) {
+	data := s.trie.Get(string(addr))
+	if data == "" {
+		account = NewAddress(big.NewInt(0))
+	} else {
+		account = NewAddressFromData([]byte(data))
+	}
+
+	return
+}
+
+func (s *State) UpdateAccount(addr []byte, account *Address) {
+	s.trie.Update(string(addr), string(account.RlpEncode()))
+}