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cpp: Add VM::has_capability() method

This commit is contained in:
Paweł Bylica 2019-11-27 17:51:06 +01:00
parent 95c01b648b
commit 236aa76c8d
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3 changed files with 18 additions and 0 deletions
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2
CHANGELOG.md
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@ -41,6 +41,8 @@ removed.
the Host context and interface parameters. This is useful for Precompiles VMs
that do not interact with the Host.
[#302](https://github.com/ethereum/evmc/pull/302)
- In C++ API, the `VM::has_capability()` method has been added.
[#465](https://github.com/ethereum/evmc/pull/465)
### Changed

6
include/evmc/evmc.hpp
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@ -570,6 +570,12 @@ public:
/// @copydoc evmc_vm::version
char const* version() const noexcept { return m_instance->version; }
/// Checks if the VM has the given capability.
bool has_capability(evmc_capabilities capability) const noexcept
{
return (get_capabilities() & static_cast<evmc_capabilities_flagset>(capability)) != 0;
}
/// @copydoc evmc::vm::get_capabilities
evmc_capabilities_flagset get_capabilities() const noexcept
{

10
test/unittests/test_cpp.cpp
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@ -314,8 +314,18 @@ TEST(cpp, vm)
const auto host = evmc_host_interface{};
auto res = vm.execute(host, nullptr, EVMC_MAX_REVISION, {}, nullptr, 0);
EXPECT_EQ(res.status_code, EVMC_FAILURE);
}
TEST(cpp, vm_capabilities)
{
const auto vm = evmc::VM{evmc_create_example_vm()};
EXPECT_TRUE(vm.get_capabilities() & EVMC_CAPABILITY_EVM1);
EXPECT_TRUE(vm.get_capabilities() & EVMC_CAPABILITY_EWASM);
EXPECT_FALSE(vm.get_capabilities() & EVMC_CAPABILITY_PRECOMPILES);
EXPECT_TRUE(vm.has_capability(EVMC_CAPABILITY_EVM1));
EXPECT_TRUE(vm.has_capability(EVMC_CAPABILITY_EWASM));
EXPECT_FALSE(vm.has_capability(EVMC_CAPABILITY_PRECOMPILES));
}
TEST(cpp, vm_set_option)