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Return bytes32 from get_storage() directly

This commit is contained in:
Paweł Bylica 2018-09-09 01:42:24 +02:00
parent 48b85bd29d
commit 21e6605f98
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GPG Key ID: 7A0C037434FE77EF
5 changed files with 28 additions and 42 deletions
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22
bindings/go/evmc/host.c
View File

@ -41,7 +41,7 @@ static inline void go_exported_functions_type_checks()
{
struct evmc_context* context = NULL;
evmc_address* address = NULL;
evmc_bytes32* bytes32 = NULL;
evmc_bytes32 bytes32;
evmc_uint256be* uint256be = NULL;
uint8_t* data = NULL;
size_t size = 0;
@ -62,12 +62,12 @@ static inline void go_exported_functions_type_checks()
bool_flag = accountExists(context, address);
evmc_get_storage_fn get_storage_fn = NULL;
get_storage_fn(bytes32, context, address, bytes32);
getStorage(bytes32, context, address, bytes32);
bytes32 = get_storage_fn(context, address, &bytes32);
bytes32 = getStorage(context, address, &bytes32);
evmc_set_storage_fn set_storage_fn = NULL;
storage_status = set_storage_fn(context, address, bytes32, bytes32);
storage_status = setStorage(context, address, bytes32, bytes32);
storage_status = set_storage_fn(context, address, &bytes32, &bytes32);
storage_status = setStorage(context, address, &bytes32, &bytes32);
evmc_get_balance_fn get_balance_fn = NULL;
bool_flag = get_balance_fn(uint256be, context, address);
@ -78,8 +78,8 @@ static inline void go_exported_functions_type_checks()
bool_flag = getCodeSize(&size, context, address);
evmc_get_code_hash_fn get_code_hash_fn = NULL;
bool_flag = get_code_hash_fn(bytes32, context, address);
bool_flag = getCodeHash(bytes32, context, address);
bool_flag = get_code_hash_fn(&bytes32, context, address);
bool_flag = getCodeHash(&bytes32, context, address);
evmc_copy_code_fn copy_code_fn = NULL;
size = copy_code_fn(context, address, size, data, size);
@ -98,10 +98,10 @@ static inline void go_exported_functions_type_checks()
tx_context = getTxContext(context);
evmc_get_block_hash_fn get_block_hash_fn = NULL;
bool_flag = get_block_hash_fn(bytes32, context, number);
bool_flag = getBlockHash(bytes32, context, number);
bool_flag = get_block_hash_fn(&bytes32, context, number);
bool_flag = getBlockHash(&bytes32, context, number);
evmc_emit_log_fn emit_log_fn = NULL;
emit_log_fn(context, address, data, size, bytes32, size);
emitLog(context, address, data, size, bytes32, size);
emit_log_fn(context, address, data, size, &bytes32, size);
emitLog(context, address, data, size, &bytes32, size);
}

11
bindings/go/evmc/host.go
View File

@ -71,7 +71,7 @@ func goByteSlice(data *C.uint8_t, size C.size_t) []byte {
type HostContext interface {
AccountExists(addr common.Address) bool
GetStorage(addr common.Address, key common.Hash) (common.Hash, error)
GetStorage(addr common.Address, key common.Hash) common.Hash
SetStorage(addr common.Address, key common.Hash, value common.Hash) (StorageStatus, error)
GetBalance(addr common.Address) (common.Hash, error)
GetCodeSize(addr common.Address) (int, error)
@ -95,15 +95,10 @@ func accountExists(pCtx unsafe.Pointer, pAddr *C.evmc_address) C.bool {
}
//export getStorage
func getStorage(pResult *C.evmc_bytes32, pCtx unsafe.Pointer, pAddr *C.struct_evmc_address, pKey *C.evmc_bytes32) C.bool {
func getStorage(pCtx unsafe.Pointer, pAddr *C.struct_evmc_address, pKey *C.evmc_bytes32) C.evmc_bytes32 {
idx := int((*C.struct_extended_context)(pCtx).index)
ctx := getHostContext(idx)
value, err := ctx.GetStorage(goAddress(*pAddr), goHash(*pKey))
if err != nil {
return false
}
*pResult = evmcBytes32(value)
return true
return evmcBytes32(ctx.GetStorage(goAddress(*pAddr), goHash(*pKey)))
}
//export setStorage

14
examples/example_host.cpp
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@ -35,19 +35,15 @@ static bool account_exists(evmc_context* context, const evmc_address* address)
return host->accounts.find(*address) != host->accounts.end();
}
static bool get_storage(evmc_bytes32* result,
evmc_context* context,
const evmc_address* address,
const evmc_bytes32* key)
static evmc_bytes32 get_storage(evmc_context* context,
const evmc_address* address,
const evmc_bytes32* key)
{
example_host_context* host = static_cast<example_host_context*>(context);
auto it = host->accounts.find(*address);
if (it != host->accounts.end())
{
*result = it->second.storage[*key];
return true;
}
return false;
return it->second.storage[*key];
return {};
}
static enum evmc_storage_status set_storage(evmc_context* context,

3
examples/example_vm.c
View File

@ -120,9 +120,8 @@ static struct evmc_result execute(struct evmc_instance* instance,
}
else if (code_size == strlen(counter) && strncmp((const char*)code, counter, code_size) == 0)
{
evmc_bytes32 value;
const evmc_bytes32 key = {{0}};
context->host->get_storage(&value, context, &msg->destination, &key);
evmc_bytes32 value = context->host->get_storage(context, &msg->destination, &key);
value.bytes[31]++;
context->host->set_storage(context, &msg->destination, &key, &value);
ret.status_code = EVMC_SUCCESS;

20
include/evmc/evmc.h
View File

@ -413,19 +413,15 @@ typedef bool (*evmc_account_exists_fn)(struct evmc_context* context, const evmc_
*
* This callback function is used by a VM to query the given contract storage entry.
*
* @param[out] result The pointer to the place where to put the result value.
* @param context The pointer to the Host execution context.
* @param address The address of the account.
* @param key The index of the account's storage entry.
* @return If the account exists the value is put at the location
* pointed by @p result and true is returned.
* If the account does not exist false is returned without
* modifying the memory pointed by @p result.
* @param context The Host execution context.
* @param address The address of the account.
* @param key The index of the account's storage entry.
* @return The storage value at the given storage key or null bytes
* if the account does not exist.
*/
typedef bool (*evmc_get_storage_fn)(evmc_bytes32* result,
struct evmc_context* context,
const evmc_address* address,
const evmc_bytes32* key);
typedef evmc_bytes32 (*evmc_get_storage_fn)(struct evmc_context* context,
const evmc_address* address,
const evmc_bytes32* key);
/**