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Improve FunctionSelector helpers

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This commit is contained in:
Alex Beregszaszi
2022-09-27 17:58:32 +02:00
parent 311b2054af
commit 725253551e
23 changed files with 106 additions and 50 deletions
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libsolutil/FunctionSelector.h
+11 -6
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@@ -26,17 +26,22 @@
namespace solidity::util
{
/// @returns the ABI selector for a given function signature, as a 32 bit number.
inline uint32_t selectorFromSignature32(std::string const& _signature)
/// @returns the ABI selector for a given function signature, as a FixedHash h32.
inline FixedHash<4> selectorFromSignatureH32(std::string const& _signature)
{
return uint32_t(FixedHash<4>::Arith(util::FixedHash<4>(util::keccak256(_signature))));
return FixedHash<4>(util::keccak256(_signature), FixedHash<4>::AlignLeft);
}
/// @returns the ABI selector for a given function signature, as a 32 bit number.
inline uint32_t selectorFromSignatureU32(std::string const& _signature)
{
return uint32_t(FixedHash<4>::Arith(selectorFromSignatureH32(_signature)));
}
/// @returns the ABI selector for a given function signature, as a u256 (left aligned) number.
inline u256 selectorFromSignature(std::string const& _signature)
inline u256 selectorFromSignatureU256(std::string const& _signature)
{
return u256(selectorFromSignature32(_signature)) << (256 - 32);
return u256(selectorFromSignatureU32(_signature)) << (256 - 32);
}
}