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Return bool from evmc_get_code_size_fn()

This commit is contained in:
Paweł Bylica 2018-09-06 11:57:34 +02:00
parent d6ef551541
commit b8b3719fb9
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GPG Key ID: 7A0C037434FE77EF
4 changed files with 28 additions and 12 deletions
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4
bindings/go/evmc/host.c
View File

@ -73,8 +73,8 @@ static inline void go_exported_functions_type_checks()
bool_flag = getBalance(uint256be, context, address);
evmc_get_code_size_fn get_code_size_fn = NULL;
size = get_code_size_fn(context, address);
size = getCodeSize(context, address);
bool_flag = get_code_size_fn(&size, context, address);
bool_flag = getCodeSize(&size, context, address);
evmc_get_code_hash_fn get_code_hash_fn = NULL;
bool_flag = get_code_hash_fn(uint256be, context, address);

11
bindings/go/evmc/host.go
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@ -74,7 +74,7 @@ type HostContext interface {
GetStorage(addr common.Address, key common.Hash) common.Hash
SetStorage(addr common.Address, key common.Hash, value common.Hash) StorageStatus
GetBalance(addr common.Address) (common.Hash, error)
GetCodeSize(addr common.Address) int
GetCodeSize(addr common.Address) (int, error)
GetCodeHash(addr common.Address) (common.Hash, error)
GetCode(addr common.Address) []byte
Selfdestruct(addr common.Address, beneficiary common.Address)
@ -122,10 +122,15 @@ func getBalance(pResult *C.struct_evmc_uint256be, pCtx unsafe.Pointer, pAddr *C.
}
//export getCodeSize
func getCodeSize(pCtx unsafe.Pointer, pAddr *C.struct_evmc_address) C.size_t {
func getCodeSize(pResult *C.size_t, pCtx unsafe.Pointer, pAddr *C.struct_evmc_address) C.bool {
idx := int((*C.struct_extended_context)(pCtx).index)
ctx := getHostContext(idx)
return C.size_t(ctx.GetCodeSize(goAddress(*pAddr)))
codeSize, err := ctx.GetCodeSize(goAddress(*pAddr))
if err != nil {
return false
}
*pResult = C.size_t(codeSize)
return true
}
//export getCodeHash

5
examples/example_host.cpp
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@ -60,11 +60,12 @@ static bool get_balance(evmc_uint256be* result, evmc_context* context, const evm
return true;
}
static size_t get_code_size(evmc_context* context, const evmc_address* address)
static bool get_code_size(size_t* result, evmc_context* context, const evmc_address* address)
{
(void)result;
(void)context;
(void)address;
return 0;
return false;
}
static bool get_code_hash(evmc_uint256be* result,

20
include/evmc/evmc.h
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@ -494,12 +494,22 @@ typedef bool (*evmc_get_balance_fn)(struct evmc_uint256be* result,
/**
* Get code size callback function.
*
* This callback function is used by an EVM to get the size of the code stored
* in the account at the given address. For accounts not having a code, this
* function returns 0.
* This callback function is used by a VM to get the size of the code stored
* in the account at the given address.
*
* @param[out] result The pointer to the place where to put the result code size.
* The pointed memory is only modified when the function returns true.
* The pointer MUST NOT be null.
* @param context The pointer to the Host execution context.
* @param address The address of the account.
* @return If the account exists the size of its code 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.
*/
typedef size_t (*evmc_get_code_size_fn)(struct evmc_context* context,
const struct evmc_address* address);
typedef bool (*evmc_get_code_size_fn)(size_t* result,
struct evmc_context* context,
const struct evmc_address* address);
/**
* Get code size callback function.