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Merge pull request #111 from ethereum/go-host-type-checks

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go: Add Host exported functions type checks
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Paweł Bylica 2018-08-30 13:21:24 +02:00 committed by GitHub
commit e119c535df
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1 changed files with 78 additions and 2 deletions
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80
bindings/go/evmc/host.c
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@ -7,6 +7,19 @@
#include <stdlib.h> #include <stdlib.h>
void evmc_go_free_result_output(const struct evmc_result* result)
{
free((void*)result->output_data);
}
/* Go does not support exporting functions with parameters with const modifiers,
* so we have to cast function pointers to the function types defined in EVMC.
* This disables any type checking of exported Go functions. To mitigate this
* problem the go_exported_functions_type_checks() function simulates usage
* of Go exported functions with expected types to check them during compilation.
*/
const struct evmc_context_fn_table evmc_go_fn_table = { const struct evmc_context_fn_table evmc_go_fn_table = {
(evmc_account_exists_fn)accountExists, (evmc_account_exists_fn)accountExists,
(evmc_get_storage_fn)getStorage, (evmc_get_storage_fn)getStorage,
@ -22,7 +35,70 @@ const struct evmc_context_fn_table evmc_go_fn_table = {
(evmc_emit_log_fn)emitLog, (evmc_emit_log_fn)emitLog,
}; };
void evmc_go_free_result_output(const struct evmc_result* result)
#pragma GCC diagnostic error "-Wconversion"
static inline void go_exported_functions_type_checks()
{ {
free((void*)result->output_data); struct evmc_context* context = NULL;
struct evmc_address* address = NULL;
struct evmc_uint256be* uint256be = NULL;
uint8_t* data = NULL;
size_t size = 0;
int64_t number = 0;
struct evmc_message* message = NULL;
struct evmc_result* result = NULL;
struct evmc_tx_context* tx_context = NULL;
enum evmc_storage_status storage_status;
(void)storage_status;
int status;
(void)status;
evmc_account_exists_fn account_exists_fn = NULL;
status = account_exists_fn(context, address);
status = accountExists(context, address);
evmc_get_storage_fn get_storage_fn = NULL;
get_storage_fn(uint256be, context, address, uint256be);
getStorage(uint256be, context, address, uint256be);
evmc_set_storage_fn set_storage_fn = NULL;
storage_status = set_storage_fn(context, address, uint256be, uint256be);
storage_status = setStorage(context, address, uint256be, uint256be);
evmc_get_balance_fn get_balance_fn = NULL;
get_balance_fn(uint256be, context, address);
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);
evmc_get_code_hash_fn get_code_hash_fn = NULL;
get_code_hash_fn(uint256be, context, address);
getCodeHash(uint256be, context, address);
evmc_copy_code_fn copy_code_fn = NULL;
size = copy_code_fn(context, address, size, data, size);
size = copyCode(context, address, size, data, size);
evmc_selfdestruct_fn selfdestruct_fn = NULL;
selfdestruct_fn(context, address, address);
selfdestruct(context, address, address);
evmc_call_fn call_fn = NULL;
call_fn(result, context, message);
call(result, context, message);
evmc_get_tx_context_fn get_tx_context_fn = NULL;
get_tx_context_fn(tx_context, context);
getTxContext(tx_context, context);
evmc_get_block_hash_fn get_block_hash_fn = NULL;
get_block_hash_fn(uint256be, context, number);
getBlockHash(uint256be, context, number);
evmc_emit_log_fn emit_log_fn = NULL;
emit_log_fn(context, address, data, size, uint256be, size);
emitLog(context, address, data, size, uint256be, size);
} }