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Yul codegen for .selector.

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This commit is contained in:
chriseth 2020-04-16 13:42:58 +02:00
parent 0f7a5e8062
commit f271dfa2e2
3 changed files with 25 additions and 4 deletions
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25
libsolidity/codegen/ir/IRGeneratorForStatements.cpp
View File

@ -842,11 +842,18 @@ void IRGeneratorForStatements::endVisit(MemberAccess const& _memberAccess)
case Type::Category::Function:
if (member == "selector")
{
solUnimplementedAssert(
dynamic_cast<FunctionType const&>(*_memberAccess.expression().annotation().type).kind() ==
FunctionType::Kind::External, ""
FunctionType const& functionType = dynamic_cast<FunctionType const&>(
*_memberAccess.expression().annotation().type
);
define(IRVariable{_memberAccess}, IRVariable(_memberAccess.expression()).part("functionIdentifier"));
if (functionType.kind() == FunctionType::Kind::External)
define(IRVariable{_memberAccess}, IRVariable(_memberAccess.expression()).part("functionIdentifier"));
else if (functionType.kind() == FunctionType::Kind::Declaration)
{
solAssert(functionType.hasDeclaration(), "");
define(IRVariable{_memberAccess}) << formatNumber(functionType.externalIdentifier() << 224) << "\n";
}
else
solAssert(false, "Invalid use of .selector");
}
else if (member == "address")
{
@ -973,6 +980,16 @@ void IRGeneratorForStatements::endVisit(MemberAccess const& _memberAccess)
solAssert(false, "Illegal fixed bytes member.");
break;
}
case Type::Category::TypeType:
{
TypeType const& type = dynamic_cast<TypeType const&>(*_memberAccess.expression().annotation().type);
solUnimplementedAssert(type.actualType()->category() == Type::Category::Contract, "");
FunctionType const* funType = dynamic_cast<FunctionType const*>(_memberAccess.annotation().type);
solUnimplementedAssert(funType, "");
solUnimplementedAssert(funType->kind() == FunctionType::Kind::Declaration, "");
// Nothing to do for declaration.
break;
}
default:
solAssert(false, "Member access to unknown type.");
}

2
test/libsolidity/semanticTests/builtinFunctions/function_types_sig.sol
View File

@ -19,6 +19,8 @@ contract C {
return this.x.selector;
}
}
// ====
// compileViaYul: also
// ----
// f() -> 0x26121ff000000000000000000000000000000000000000000000000000000000
// g() -> 0x26121ff000000000000000000000000000000000000000000000000000000000

2
test/libsolidity/semanticTests/functionSelector/function_selector_via_contract_name.sol
View File

@ -15,6 +15,8 @@ contract C {
return (a.f.selector, a.g.selector, b.f.selector, b.g.selector);
}
}
// ====
// compileViaYul: also
// ----
// test1() -> left(0x26121ff0), left(0xe420264a), left(0x26121ff0), left(0xe420264a)
// test2() -> left(0x26121ff0), left(0xe420264a), left(0x26121ff0), left(0xe420264a)