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Merge pull request #10530 from ethereum/changeConstructorOrder

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[Sol->Yul] Evaluate base arguments in derived to base order.
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chriseth 2020-12-08 20:32:48 +01:00 committed by GitHub
commit 672abc2276
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2 changed files with 44 additions and 5 deletions
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25
libsolidity/codegen/ir/IRGenerator.cpp
View File

@ -437,17 +437,32 @@ pair<string, map<ContractDefinition const*, vector<string>>> IRGenerator::evalua
ContractDefinition const& _contract
)
{
struct InheritanceOrder
{
bool operator()(ContractDefinition const* _c1, ContractDefinition const* _c2) const
{
solAssert(contains(linearizedBaseContracts, _c1) && contains(linearizedBaseContracts, _c2), "");
auto it1 = find(linearizedBaseContracts.begin(), linearizedBaseContracts.end(), _c1);
auto it2 = find(linearizedBaseContracts.begin(), linearizedBaseContracts.end(), _c2);
return it1 < it2;
}
vector<ContractDefinition const*> const& linearizedBaseContracts;
} inheritanceOrder{_contract.annotation().linearizedBaseContracts};
map<ContractDefinition const*, vector<string>> constructorParams;
vector<pair<ContractDefinition const*, std::vector<ASTPointer<Expression>>const *>> baseConstructorArguments;
map<ContractDefinition const*, std::vector<ASTPointer<Expression>>const *, InheritanceOrder>
baseConstructorArguments(inheritanceOrder);
;
for (ASTPointer<InheritanceSpecifier> const& base: _contract.baseContracts())
if (FunctionDefinition const* baseConstructor = dynamic_cast<ContractDefinition const*>(
base->name().annotation().referencedDeclaration
)->constructor(); baseConstructor && base->arguments())
baseConstructorArguments.emplace_back(
solAssert(baseConstructorArguments.emplace(
dynamic_cast<ContractDefinition const*>(baseConstructor->scope()),
base->arguments()
);
).second, "");
if (FunctionDefinition const* constructor = _contract.constructor())
for (ASTPointer<ModifierInvocation> const& modifier: constructor->modifiers())
@ -458,10 +473,10 @@ pair<string, map<ContractDefinition const*, vector<string>>> IRGenerator::evalua
FunctionDefinition const* baseConstructor = baseContract->constructor();
baseConstructor && modifier->arguments()
)
baseConstructorArguments.emplace_back(
solAssert(baseConstructorArguments.emplace(
dynamic_cast<ContractDefinition const*>(baseConstructor->scope()),
modifier->arguments()
);
).second, "");
IRGeneratorForStatements generator{m_context, m_utils};
for (auto&& [baseContract, arguments]: baseConstructorArguments)

24
test/libsolidity/semanticTests/constructor/order_of_evaluation.sol Normal file
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@ -0,0 +1,24 @@
contract A {
constructor(uint) {}
}
contract B {
constructor(uint) {}
}
contract C {
constructor(uint) {}
}
contract D {
constructor(uint) {}
}
contract X is D, C, B, A {
uint[] x;
function f(uint _x) internal returns (uint) {
x.push(_x);
}
function g() public view returns (uint[] memory) { return x; }
constructor() A(f(1)) C(f(2)) B(f(3)) D(f(4)) {}
}
// ====
// compileViaYul: also
// ----
// g() -> 0x20, 4, 1, 3, 2, 4