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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()))
}
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