Add helper to show if contract can be deployed.

libsolidity/ast/AST.cpp

@@ -138,6 +138,11 @@ bool ContractDefinition::constructorIsPublic() const
 	return !f || f->isPublic();
 }
 
+bool ContractDefinition::canBeDeployed() const
+{
+	return constructorIsPublic() && annotation().unimplementedFunctions.empty();
+}
+
 FunctionDefinition const* ContractDefinition::fallbackFunction() const
 {
 	for (ContractDefinition const* contract: annotation().linearizedBaseContracts)

libsolidity/ast/AST.h

@@ -408,6 +408,10 @@ public:
 	FunctionDefinition const* constructor() const;
 	/// @returns true iff the constructor of this contract is public (or non-existing).
 	bool constructorIsPublic() const;
+	/// @returns true iff the contract can be deployed, i.e. is not abstract and has a
+	/// public constructor.
+	/// Should only be called after the type checker has run.
+	bool canBeDeployed() const;
 	/// Returns the fallback function or nullptr if no fallback function was specified.
 	FunctionDefinition const* fallbackFunction() const;
 

libsolidity/ast/Types.cpp

@@ -3423,7 +3423,7 @@ MemberList::MemberMap MagicType::nativeMembers(ContractDefinition const*) const
 			"Only contracts supported for now"
 		);
 		ContractDefinition const& contract = dynamic_cast<ContractType const&>(*m_typeArgument).contractDefinition();
-		if (contract.annotation().unimplementedFunctions.empty() && contract.constructorIsPublic())
+		if (contract.canBeDeployed())
 			return MemberList::MemberMap({
 				{"creationCode", std::make_shared<ArrayType>(DataLocation::Memory)},
 				{"runtimeCode", std::make_shared<ArrayType>(DataLocation::Memory)}