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go: Add error output to Host.GetBlockHash()

This commit is contained in:
Paweł Bylica 2018-09-03 16:49:01 +02:00
parent d9f7ff25f5
commit d0bc50792a
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1 changed files with 3 additions and 6 deletions
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9
bindings/go/evmc/host.go
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@ -79,7 +79,7 @@ type HostContext interface {
Selfdestruct(addr common.Address, beneficiary common.Address) Selfdestruct(addr common.Address, beneficiary common.Address)
GetTxContext() (gasPrice common.Hash, origin common.Address, coinbase common.Address, number int64, timestamp int64, GetTxContext() (gasPrice common.Hash, origin common.Address, coinbase common.Address, number int64, timestamp int64,
gasLimit int64, difficulty common.Hash) gasLimit int64, difficulty common.Hash)
GetBlockHash(number int64) common.Hash GetBlockHash(number int64) (common.Hash, error)
EmitLog(addr common.Address, topics []common.Hash, data []byte) EmitLog(addr common.Address, topics []common.Hash, data []byte)
Call(kind CallKind, Call(kind CallKind,
destination common.Address, sender common.Address, value *big.Int, input []byte, gas int64, depth int, destination common.Address, sender common.Address, value *big.Int, input []byte, gas int64, depth int,
@ -186,11 +186,8 @@ func getBlockHash(pResult *C.struct_evmc_uint256be, pCtx unsafe.Pointer, number
idx := int((*C.struct_extended_context)(pCtx).index) idx := int((*C.struct_extended_context)(pCtx).index)
ctx := getHostContext(idx) ctx := getHostContext(idx)
blockhash := ctx.GetBlockHash(number) blockhash, err := ctx.GetBlockHash(number)
if err != nil {
// FIXME: should we instead adjust `ctx.GetBlockHash`?
if blockhash == (common.Hash{}) {
// All zeroes hash is considered a failure in lookup.
return C.int(0) return C.int(0)
} }