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cpp: Make HostContext to implement HostInterface

This commit is contained in:
Paweł Bylica 2019-03-28 16:43:23 +01:00
parent e3d49fe7d0
commit e824942149
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GPG Key ID: 7A0C037434FE77EF
2 changed files with 18 additions and 16 deletions
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30
include/evmc/evmc.hpp
View File

@ -122,7 +122,9 @@ public:
/// Wrapper around EVMC host context / host interface.
class HostContext
///
/// To be used by VM implementations as better alternative to using ::evmc_context directly.
class HostContext : public HostInterface
{
evmc_context* context = nullptr;
evmc_tx_context tx_context = {};
@ -130,34 +132,34 @@ class HostContext
public:
HostContext(evmc_context* context) noexcept : context{context} {} // NOLINT
bool account_exists(const evmc_address& address) noexcept
bool account_exists(const evmc_address& address) noexcept final
{
return context->host->account_exists(context, &address);
}
evmc_bytes32 get_storage(const evmc_address& address, const evmc_bytes32& key) noexcept
evmc_bytes32 get_storage(const evmc_address& address, const evmc_bytes32& key) noexcept final
{
return context->host->get_storage(context, &address, &key);
}
evmc_storage_status set_storage(const evmc_address& address,
const evmc_bytes32& key,
const evmc_bytes32& value) noexcept
const evmc_bytes32& value) noexcept final
{
return context->host->set_storage(context, &address, &key, &value);
}
evmc_uint256be get_balance(const evmc_address& address) noexcept
evmc_uint256be get_balance(const evmc_address& address) noexcept final
{
return context->host->get_balance(context, &address);
}
size_t get_code_size(const evmc_address& address) noexcept
size_t get_code_size(const evmc_address& address) noexcept final
{
return context->host->get_code_size(context, &address);
}
evmc_bytes32 get_code_hash(const evmc_address& address) noexcept
evmc_bytes32 get_code_hash(const evmc_address& address) noexcept final
{
return context->host->get_code_hash(context, &address);
}
@ -165,17 +167,17 @@ public:
size_t copy_code(const evmc_address& address,
size_t code_offset,
uint8_t* buffer_data,
size_t buffer_size) noexcept
size_t buffer_size) noexcept final
{
return context->host->copy_code(context, &address, code_offset, buffer_data, buffer_size);
}
void selfdestruct(const evmc_address& address, const evmc_address& beneficiary)
void selfdestruct(const evmc_address& address, const evmc_address& beneficiary) noexcept final
{
context->host->selfdestruct(context, &address, &beneficiary);
}
result call(const evmc_message& message) noexcept
result call(const evmc_message& message) noexcept final
{
return result{context->host->call(context, &message)};
}
@ -185,15 +187,15 @@ public:
/// The implementation caches the received transaction context
/// by assuming that the block timestamp should never be zero.
///
/// @return Reference to the cached transaction context.
const evmc_tx_context& get_tx_context() noexcept
/// @return The cached transaction context.
evmc_tx_context get_tx_context() noexcept final
{
if (tx_context.block_timestamp == 0)
tx_context = context->host->get_tx_context(context);
return tx_context;
}
evmc_bytes32 get_block_hash(int64_t number) noexcept
evmc_bytes32 get_block_hash(int64_t number) noexcept final
{
return context->host->get_block_hash(context, number);
}
@ -202,7 +204,7 @@ public:
const uint8_t* data,
size_t data_size,
const evmc_bytes32 topics[],
size_t topics_count) noexcept
size_t topics_count) noexcept final
{
context->host->emit_log(context, &address, data, data_size, topics, topics_count);
}

4
test/unittests/test_cpp.cpp
View File

@ -89,8 +89,8 @@ TEST(cpp, host)
host.selfdestruct(a, a);
EXPECT_EQ(host.call({}).gas_left, 0);
auto* tx = &host.get_tx_context();
EXPECT_EQ(&host.get_tx_context(), tx);
auto tx = host.get_tx_context();
EXPECT_EQ(host.get_tx_context().block_number, tx.block_number);
EXPECT_EQ(host.get_block_hash(0), evmc_bytes32{});