diff options
Diffstat (limited to 'eth/bind.go')
| -rw-r--r-- | eth/bind.go | 92 |
1 files changed, 47 insertions, 45 deletions
diff --git a/eth/bind.go b/eth/bind.go index bf7a7fb53..532e94460 100644 --- a/eth/bind.go +++ b/eth/bind.go @@ -19,6 +19,7 @@ package eth import ( "math/big" + "github.com/ethereum/go-ethereum" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/internal/ethapi" @@ -50,47 +51,62 @@ func NewContractBackend(eth *Ethereum) *ContractBackend { } } -// HasCode implements bind.ContractVerifier.HasCode by retrieving any code associated -// with the contract from the local API, and checking its size. -func (b *ContractBackend) HasCode(ctx context.Context, contract common.Address, pending bool) (bool, error) { - if ctx == nil { - ctx = context.Background() - } - block := rpc.LatestBlockNumber - if pending { - block = rpc.PendingBlockNumber - } - out, err := b.bcapi.GetCode(ctx, contract, block) - return len(common.FromHex(out)) > 0, err +// CodeAt retrieves any code associated with the contract from the local API. +func (b *ContractBackend) CodeAt(ctx context.Context, contract common.Address, blockNum *big.Int) ([]byte, error) { + out, err := b.bcapi.GetCode(ctx, contract, toBlockNumber(blockNum)) + return common.FromHex(out), err +} + +// CodeAt retrieves any code associated with the contract from the local API. +func (b *ContractBackend) PendingCodeAt(ctx context.Context, contract common.Address) ([]byte, error) { + out, err := b.bcapi.GetCode(ctx, contract, rpc.PendingBlockNumber) + return common.FromHex(out), err } // ContractCall implements bind.ContractCaller executing an Ethereum contract // call with the specified data as the input. The pending flag requests execution // against the pending block, not the stable head of the chain. -func (b *ContractBackend) ContractCall(ctx context.Context, contract common.Address, data []byte, pending bool) ([]byte, error) { - if ctx == nil { - ctx = context.Background() - } - // Convert the input args to the API spec +func (b *ContractBackend) CallContract(ctx context.Context, msg ethereum.CallMsg, blockNum *big.Int) ([]byte, error) { + out, err := b.bcapi.Call(ctx, toCallArgs(msg), toBlockNumber(blockNum)) + return common.FromHex(out), err +} + +// ContractCall implements bind.ContractCaller executing an Ethereum contract +// call with the specified data as the input. The pending flag requests execution +// against the pending block, not the stable head of the chain. +func (b *ContractBackend) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error) { + out, err := b.bcapi.Call(ctx, toCallArgs(msg), rpc.PendingBlockNumber) + return common.FromHex(out), err +} + +func toCallArgs(msg ethereum.CallMsg) ethapi.CallArgs { args := ethapi.CallArgs{ - To: &contract, - Data: common.ToHex(data), + To: msg.To, + From: msg.From, + Data: common.ToHex(msg.Data), } - block := rpc.LatestBlockNumber - if pending { - block = rpc.PendingBlockNumber + if msg.Gas != nil { + args.Gas = *rpc.NewHexNumber(msg.Gas) } - // Execute the call and convert the output back to Go types - out, err := b.bcapi.Call(ctx, args, block) - return common.FromHex(out), err + if msg.GasPrice != nil { + args.GasPrice = *rpc.NewHexNumber(msg.GasPrice) + } + if msg.Value != nil { + args.Value = *rpc.NewHexNumber(msg.Value) + } + return args +} + +func toBlockNumber(num *big.Int) rpc.BlockNumber { + if num == nil { + return rpc.LatestBlockNumber + } + return rpc.BlockNumber(num.Int64()) } // PendingAccountNonce implements bind.ContractTransactor retrieving the current // pending nonce associated with an account. -func (b *ContractBackend) PendingAccountNonce(ctx context.Context, account common.Address) (uint64, error) { - if ctx == nil { - ctx = context.Background() - } +func (b *ContractBackend) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error) { out, err := b.txapi.GetTransactionCount(ctx, account, rpc.PendingBlockNumber) return out.Uint64(), err } @@ -98,9 +114,6 @@ func (b *ContractBackend) PendingAccountNonce(ctx context.Context, account commo // SuggestGasPrice implements bind.ContractTransactor retrieving the currently // suggested gas price to allow a timely execution of a transaction. func (b *ContractBackend) SuggestGasPrice(ctx context.Context) (*big.Int, error) { - if ctx == nil { - ctx = context.Background() - } return b.eapi.GasPrice(ctx) } @@ -109,25 +122,14 @@ func (b *ContractBackend) SuggestGasPrice(ctx context.Context) (*big.Int, error) // the backend blockchain. There is no guarantee that this is the true gas limit // requirement as other transactions may be added or removed by miners, but it // should provide a basis for setting a reasonable default. -func (b *ContractBackend) EstimateGasLimit(ctx context.Context, sender common.Address, contract *common.Address, value *big.Int, data []byte) (*big.Int, error) { - if ctx == nil { - ctx = context.Background() - } - out, err := b.bcapi.EstimateGas(ctx, ethapi.CallArgs{ - From: sender, - To: contract, - Value: *rpc.NewHexNumber(value), - Data: common.ToHex(data), - }) +func (b *ContractBackend) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (*big.Int, error) { + out, err := b.bcapi.EstimateGas(ctx, toCallArgs(msg)) return out.BigInt(), err } // SendTransaction implements bind.ContractTransactor injects the transaction // into the pending pool for execution. func (b *ContractBackend) SendTransaction(ctx context.Context, tx *types.Transaction) error { - if ctx == nil { - ctx = context.Background() - } raw, _ := rlp.EncodeToBytes(tx) _, err := b.txapi.SendRawTransaction(ctx, common.ToHex(raw)) return err |