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FunctionCallGraph: Detect events

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This commit is contained in:
Kamil Śliwak 2021-02-11 15:51:00 +01:00
parent 3150066eef
commit bd57019821
1 changed files with 25 additions and 0 deletions
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25
libsolidity/analysis/FunctionCallGraph.cpp
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@ -123,7 +123,32 @@ bool FunctionCallGraphBuilder::visit(FunctionCall const& _functionCall)
// change at runtime). All we can do is to add an edge to the dispatch which in turn has
// edges to all functions could possibly be called.
add(*m_currentNode, m_currentDispatch);
else if (functionType && functionType->kind() == FunctionType::Kind::Event)
{
// NOTE: calledDirectly is always false for events, no matter whether it's an actual emit
// or just event name used in an expression. Does not matter since this visit(FunctionCall)
// won't get triggered in the latter case.
solAssert(!_functionCall.expression().annotation().calledDirectly, "");
EventDefinition const* event = nullptr;
if (auto memberAccess = dynamic_cast<MemberAccess const*>(&_functionCall.expression()))
{
solAssert(*memberAccess->annotation().requiredLookup == VirtualLookup::Static, "");
event = dynamic_cast<EventDefinition const*>(memberAccess->annotation().referencedDeclaration);
}
else if (auto identifier = dynamic_cast<Identifier const*>(&_functionCall.expression()))
{
// TMP: Why is the lookup type virtual for when we refer to the event just by name
// and static when we qualify it with the contract name?
solAssert(*identifier->annotation().requiredLookup == VirtualLookup::Virtual, "");
event = dynamic_cast<EventDefinition const*>(identifier->annotation().referencedDeclaration);
}
else
solAssert(false, "");
solAssert(event, "");
add(*m_currentNode, event);
}
return true;
}