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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()]
if account != nil {
return account
} else {
panic(Fmt("Invalid account addr: %X", addr))
}
}
func (fas *FakeAppState) UpdateAccount(account *Account) {
_, ok := fas.accounts[account.Address.String()]
if !ok {
panic(Fmt("Invalid account addr: %X", account.Address))
} else {
// Nothing to do
}
}
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[:])
PutUint64LE(temp[32:], nonce)
return LeftPadWord256(sha3.Sha3(temp)[:20])
}