1 files changed, 91 insertions, 0 deletions
diff --git a/libsolidity/analysis/ContractLevelChecker.cpp b/libsolidity/analysis/ContractLevelChecker.cpp
index 74ac665f..f41e569f 100644
--- a/libsolidity/analysis/ContractLevelChecker.cpp
+++ b/libsolidity/analysis/ContractLevelChecker.cpp
@@ -39,6 +39,7 @@ bool ContractLevelChecker::check(ContractDefinition const& _contract)
 	checkContractDuplicateEvents(_contract);
 	checkContractIllegalOverrides(_contract);
 	checkContractAbstractFunctions(_contract);
+	checkContractBaseConstructorArguments(_contract);
 
 	return Error::containsOnlyWarnings(m_errorReporter.errors());
 }
@@ -248,3 +249,93 @@ void ContractLevelChecker::checkContractAbstractFunctions(ContractDefinition con
 				break;
 			}
 }
+
+
+void ContractLevelChecker::checkContractBaseConstructorArguments(ContractDefinition const& _contract)
+{
+	vector<ContractDefinition const*> const& bases = _contract.annotation().linearizedBaseContracts;
+
+	// Determine the arguments that are used for the base constructors.
+	for (ContractDefinition const* contract: bases)
+	{
+		if (FunctionDefinition const* constructor = contract->constructor())
+			for (auto const& modifier: constructor->modifiers())
+				if (auto baseContract = dynamic_cast<ContractDefinition const*>(
+					modifier->name()->annotation().referencedDeclaration
+				))
+				{
+					if (modifier->arguments())
+					{
+						if (baseContract->constructor())
+							annotateBaseConstructorArguments(_contract, baseContract->constructor(), modifier.get());
+					}
+					else
+						m_errorReporter.declarationError(
+							modifier->location(),
+							"Modifier-style base constructor call without arguments."
+						);
+				}
+
+		for (ASTPointer<InheritanceSpecifier> const& base: contract->baseContracts())
+		{
+			ContractDefinition const* baseContract = dynamic_cast<ContractDefinition const*>(
+				base->name().annotation().referencedDeclaration
+			);
+			solAssert(baseContract, "");
+
+			if (baseContract->constructor() && base->arguments() && !base->arguments()->empty())
+				annotateBaseConstructorArguments(_contract, baseContract->constructor(), base.get());
+		}
+	}
+
+	// check that we get arguments for all base constructors that need it.
+	// If not mark the contract as abstract (not fully implemented)
+	for (ContractDefinition const* contract: bases)
+		if (FunctionDefinition const* constructor = contract->constructor())
+			if (contract != &_contract && !constructor->parameters().empty())
+				if (!_contract.annotation().baseConstructorArguments.count(constructor))
+					_contract.annotation().unimplementedFunctions.push_back(constructor);
+}
+
+void ContractLevelChecker::annotateBaseConstructorArguments(
+	ContractDefinition const& _currentContract,
+	FunctionDefinition const* _baseConstructor,
+	ASTNode const* _argumentNode
+)
+{
+	solAssert(_baseConstructor, "");
+	solAssert(_argumentNode, "");
+
+	auto insertionResult = _currentContract.annotation().baseConstructorArguments.insert(
+		std::make_pair(_baseConstructor, _argumentNode)
+	);
+	if (!insertionResult.second)
+	{
+		ASTNode const* previousNode = insertionResult.first->second;
+
+		SourceLocation const* mainLocation = nullptr;
+		SecondarySourceLocation ssl;
+
+		if (
+			_currentContract.location().contains(previousNode->location()) ||
+			_currentContract.location().contains(_argumentNode->location())
+		)
+		{
+			mainLocation = &previousNode->location();
+			ssl.append("Second constructor call is here:", _argumentNode->location());
+		}
+		else
+		{
+			mainLocation = &_currentContract.location();
+			ssl.append("First constructor call is here: ", _argumentNode->location());
+			ssl.append("Second constructor call is here: ", previousNode->location());
+		}
+
+		m_errorReporter.declarationError(
+			*mainLocation,
+			ssl,
+			"Base constructor arguments given twice."
+		);
+	}
+
+}