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wasmstatedb.go
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wasmstatedb.go
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package vm
import (
"github.com/PlatONnetwork/PlatON-Go/common"
"github.com/PlatONnetwork/PlatON-Go/core/types"
"github.com/PlatONnetwork/PlatON-Go/params"
"encoding/hex"
"fmt"
"math/big"
)
type WasmStateDB struct {
StateDB StateDB
evm *EVM
cfg *Config
contract *Contract
}
func NewWasmStateDB(db *WasmStateDB, contract ContractRef) *WasmStateDB {
stateDb := &WasmStateDB{
StateDB: db.StateDB,
evm: db.evm,
cfg : db.cfg,
}
if c, ok := contract.(*Contract); ok {
stateDb.contract = c
}
return stateDb
}
func (self *WasmStateDB) GasPrice() int64 {
return self.evm.Context.GasPrice.Int64()
}
func (self *WasmStateDB) BlockHash(num uint64) common.Hash {
return self.evm.GetHash(num)
}
func (self *WasmStateDB) BlockNumber() *big.Int {
return self.evm.BlockNumber
}
func (self *WasmStateDB) GasLimimt() uint64 {
return self.evm.GasLimit
}
func (self *WasmStateDB) Time() *big.Int {
return self.evm.Time
}
func (self *WasmStateDB) Coinbase() common.Address {
return self.evm.Coinbase
}
func (self *WasmStateDB) GetBalance(addr common.Address) *big.Int {
return self.StateDB.GetBalance(addr)
}
func (self *WasmStateDB) Origin() common.Address {
return self.evm.Origin
}
func (self *WasmStateDB) Caller() common.Address {
return self.contract.Caller()
}
func (self *WasmStateDB) Address() common.Address {
return self.contract.Address()
}
func (self *WasmStateDB) CallValue() *big.Int {
return self.contract.Value()
}
/*func (self *WasmStateDB) AddLog(log *types.Log) {
self.evm.StateDB.AddLog(log)
}*/
func (self *WasmStateDB) AddLog(address common.Address, topics []common.Hash, data []byte, bn uint64) {
log := &types.Log {
Address: address,
Topics: topics,
Data: data,
BlockNumber: bn,
}
self.evm.StateDB.AddLog(log)
}
func (self *WasmStateDB) SetState(key []byte, value []byte) {
self.evm.StateDB.SetState(self.Address(), key, value)
}
func (self *WasmStateDB) GetState(key []byte) []byte {
return self.evm.StateDB.GetState(self.Address(), key)
}
func (self *WasmStateDB) GetCallerNonce() int64 {
addr := self.contract.Caller()
return int64(self.evm.StateDB.GetNonce(addr))
}
func (self *WasmStateDB) Transfer(toAddr common.Address, value *big.Int) (ret []byte, leftOverGas uint64, err error) {
caller := self.contract
gas := self.evm.callGasTemp
if value.Sign() != 0 {
gas += params.CallStipend
}
fmt.Println("Transfer to:", toAddr.String())
fmt.Println("Transfer caller:", caller.self.Address().Hex())
ret, returnGas, err := self.evm.Call(caller, toAddr, nil, gas, value)
return ret, returnGas, err
}
func (self *WasmStateDB) Call(addr, param []byte) ([]byte, error) {
ret, _, err := self.evm.Call(self.contract, common.HexToAddress(hex.EncodeToString(addr)), param, self.contract.Gas, self.contract.value)
return ret, err
}
func (self *WasmStateDB) DelegateCall(addr, param []byte) ([]byte, error) {
ret, _, err := self.evm.DelegateCall(self.contract, common.HexToAddress(hex.EncodeToString(addr)), param, self.contract.Gas)
return ret, err
}