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package batching
import (
"fmt"
"github.com/ethereum-optimism/optimism/op-service/sources/batching/rpcblock"
"github.com/ethereum-optimism/optimism/op-service/txmgr"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/rpc"
)
type ContractCall struct {
Abi *abi.ABI
Addr common.Address
Method string
Args []interface{}
From common.Address
}
func NewContractCall(abi *abi.ABI, addr common.Address, method string, args ...interface{}) *ContractCall {
return &ContractCall{
Abi: abi,
Addr: addr,
Method: method,
Args: args,
}
}
func (c *ContractCall) Pack() ([]byte, error) {
return c.Abi.Pack(c.Method, c.Args...)
}
func (c *ContractCall) CallMethod() string {
return "eth_call"
}
func (c *ContractCall) ToBatchElemCreator() (BatchElementCreator, error) {
args, err := c.ToCallArgs()
if err != nil {
return nil, err
}
f := func(block rpcblock.Block) (any, rpc.BatchElem) {
out := new(hexutil.Bytes)
return out, rpc.BatchElem{
Method: "eth_call",
Args: []interface{}{args, block.ArgValue()},
Result: &out,
}
}
return f, nil
}
func (c *ContractCall) ToCallArgs() (interface{}, error) {
data, err := c.Pack()
if err != nil {
return nil, fmt.Errorf("failed to pack arguments: %w", err)
}
arg := map[string]interface{}{
"from": c.From,
"to": &c.Addr,
"input": hexutil.Bytes(data),
}
return arg, nil
}
func (c *ContractCall) CreateResult() interface{} {
return new(hexutil.Bytes)
}
func (c *ContractCall) HandleResult(result interface{}) (*CallResult, error) {
out, err := c.Unpack(*result.(*hexutil.Bytes))
return out, err
}
func (c *ContractCall) Unpack(hex hexutil.Bytes) (*CallResult, error) {
out, err := c.Abi.Unpack(c.Method, hex)
if err != nil {
return nil, fmt.Errorf("failed to unpack data: %w", err)
}
return &CallResult{out: out}, nil
}
func (c *ContractCall) ToTxCandidate() (txmgr.TxCandidate, error) {
data, err := c.Pack()
if err != nil {
return txmgr.TxCandidate{}, fmt.Errorf("failed to pack arguments: %w", err)
}
return txmgr.TxCandidate{
TxData: data,
To: &c.Addr,
}, nil
}