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Adds warning if function is shadowing a contract.

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This commit is contained in:
Erik Kundt 2018-07-17 22:46:17 +02:00
parent de6cd2425b
commit b0b35e1e6b
3 changed files with 11 additions and 14 deletions
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10
libsolidity/analysis/NameAndTypeResolver.cpp
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@ -482,15 +482,7 @@ bool DeclarationRegistrationHelper::registerDeclaration(
Declaration const* shadowedDeclaration = nullptr;
if (_warnOnShadow && !name.empty() && _container.enclosingContainer())
for (auto const* decl: _container.enclosingContainer()->resolveName(name, true, true))
// Do not warn about functions shadowing a contract.
if (
!(
dynamic_cast<ContractDefinition const*>(decl) &&
dynamic_cast<FunctionDefinition const*>(&_declaration) &&
name == decl->name()
)
)
shadowedDeclaration = decl;
shadowedDeclaration = decl;
// We use "invisible" for both inactive variables in blocks and for members invisible in contracts.
// They cannot both be true at the same time.

1
test/libsolidity/syntaxTests/constructor/constructor_old.sol
View File

@ -1,3 +1,4 @@
contract A { function A() public {} }
// ----
// SyntaxError: (13-35): Functions are not allowed to have the same name as the contract. If you intend this to be a constructor, use "constructor(...) { ... }" to define it.
// Warning: (13-35): This declaration shadows an existing declaration.

14
test/libsolidity/syntaxTests/constructor/overriding_constructor.sol
View File

@ -1,6 +1,10 @@
contract A { constructor() public {} }
contract B is A { function A() public pure returns (uint8) {} }
contract C is A { function A() public pure returns (uint8) {} }
contract D is B { function B() public pure returns (uint8) {} }
contract E is D { function B() public pure returns (uint8) {} }
contract A { function f() public {} }
contract B is A {
function A() public pure returns (uint8) {}
function g() public {
A.f();
}
}
// ----
// Warning: (58-101): This declaration shadows an existing declaration.
// TypeError: (130-133): Member "f" not found or not visible after argument-dependent lookup in function () pure returns (uint8).