package vm import ( . "github.com/tendermint/tendermint/common" . "github.com/tendermint/tendermint/vm" "github.com/tendermint/tendermint/vm/sha3" ) type FakeAppState struct { accounts map[string]*Account storage map[string]Word256 logs []*Log } func (fas *FakeAppState) GetAccount(addr Word256) *Account { account := fas.accounts[addr.String()] return account } func (fas *FakeAppState) UpdateAccount(account *Account) { fas.accounts[account.Address.String()] = account } func (fas *FakeAppState) RemoveAccount(account *Account) { _, ok := fas.accounts[account.Address.String()] if !ok { panic(Fmt("Invalid account addr: %X", account.Address)) } else { // Remove account delete(fas.accounts, account.Address.String()) } } func (fas *FakeAppState) CreateAccount(creator *Account) *Account { addr := createAddress(creator) account := fas.accounts[addr.String()] if account == nil { return &Account{ Address: addr, Balance: 0, Code: nil, Nonce: 0, StorageRoot: Zero256, } } else { panic(Fmt("Invalid account addr: %X", addr)) } } func (fas *FakeAppState) GetStorage(addr Word256, key Word256) Word256 { _, ok := fas.accounts[addr.String()] if !ok { panic(Fmt("Invalid account addr: %X", addr)) } value, ok := fas.storage[addr.String()+key.String()] if ok { return value } else { return Zero256 } } func (fas *FakeAppState) SetStorage(addr Word256, key Word256, value Word256) { _, ok := fas.accounts[addr.String()] if !ok { panic(Fmt("Invalid account addr: %X", addr)) } fas.storage[addr.String()+key.String()] = value } func (fas *FakeAppState) AddLog(log *Log) { fas.logs = append(fas.logs, log) } // Creates a 20 byte address and bumps the nonce. func createAddress(creator *Account) Word256 { nonce := creator.Nonce creator.Nonce += 1 temp := make([]byte, 32+8) copy(temp, creator.Address[:]) PutUint64BE(temp[32:], nonce) return LeftPadWord256(sha3.Sha3(temp)[:20]) }