changed the way of resolving declarations. now the cleanup of function duplications in libsolidity/NameAndTypeResolver.cpp(WIP)

AST.h

@@ -1217,10 +1217,10 @@ public:
 	}
 	Declaration const& getReferencedDeclaration() const;
 
-	/// Stores a set of possible declarations referenced by this identifier. Has to be resolved
+	/// Stores a possible declarations referenced by this identifier. Has to be resolved
 	/// providing argument types using overloadResolution before the referenced declaration
 	/// is accessed.
-	void setOverloadedDeclarations(std::set<Declaration const*> const& _declarations)
+	void setOverloadedDeclarations(std::vector<Declaration const*> const& _declarations)
 	{
 		m_overloadedDeclarations = _declarations;
 	}
@@ -1237,8 +1237,8 @@ private:
 	/// Stores a reference to the current contract. This is needed because types of base contracts
 	/// change depending on the context.
 	ContractDefinition const* m_currentContract = nullptr;
-	/// A set of overloaded declarations, right now only FunctionDefinition has overloaded declarations.
-	std::set<Declaration const*> m_overloadedDeclarations;
+	/// A vector of overloaded declarations, right now only FunctionDefinition has overloaded declarations.
+	std::vector<Declaration const*> m_overloadedDeclarations;
 };
 
 /**

DeclarationContainer.cpp

@@ -37,6 +37,7 @@ Declaration const* DeclarationContainer::conflictingDeclaration(Declaration cons
 		declarations += m_declarations.at(name);
 	if (m_invisibleDeclarations.count(name))
 		declarations += m_invisibleDeclarations.at(name);
+
 	if (dynamic_cast<FunctionDefinition const*>(&_declaration))
 	{
 		// check that all other declarations with the same name are functions
@@ -66,14 +67,13 @@ bool DeclarationContainer::registerDeclaration(Declaration const& _declaration,
 		return false;
 
 	if (_invisible)
-		m_invisibleDeclarations[name].insert(&_declaration);
+		m_invisibleDeclarations[name].push_back(&_declaration);
 	else
-		m_declarations[name].insert(&_declaration);
-
+		m_declarations[name].push_back(&_declaration);
 	return true;
 }
 
-set<Declaration const*> DeclarationContainer::resolveName(ASTString const& _name, bool _recursive) const
+std::vector<const Declaration *> DeclarationContainer::resolveName(ASTString const& _name, bool _recursive) const
 {
 	solAssert(!_name.empty(), "Attempt to resolve empty name.");
 	auto result = m_declarations.find(_name);
@@ -81,5 +81,5 @@ set<Declaration const*> DeclarationContainer::resolveName(ASTString const& _name
 		return result->second;
 	if (_recursive && m_enclosingContainer)
 		return m_enclosingContainer->resolveName(_name, true);
-	return set<Declaration const*>({});
+	return vector<Declaration const*>({});
 }

DeclarationContainer.h

@@ -48,17 +48,17 @@ public:
 	/// @param _update if true, replaces a potential declaration that is already present
 	/// @returns false if the name was already declared.
 	bool registerDeclaration(Declaration const& _declaration, bool _invisible = false, bool _update = false);
-	std::set<Declaration const*> resolveName(ASTString const& _name, bool _recursive = false) const;
+	std::vector<Declaration const*> resolveName(ASTString const& _name, bool _recursive = false) const;
 	Declaration const* getEnclosingDeclaration() const { return m_enclosingDeclaration; }
-	std::map<ASTString, std::set<Declaration const*>> const& getDeclarations() const { return m_declarations; }
+	std::map<ASTString, std::vector<Declaration const*>> const& getDeclarations() const { return m_declarations; }
 	/// @returns whether declaration is valid, and if not also returns previous declaration.
 	Declaration const* conflictingDeclaration(Declaration const& _declaration) const;
 
 private:
 	Declaration const* m_enclosingDeclaration;
 	DeclarationContainer const* m_enclosingContainer;
-	std::map<ASTString, std::set<Declaration const*>> m_declarations;
-	std::map<ASTString, std::set<Declaration const*>> m_invisibleDeclarations;
+	std::map<ASTString, std::vector<Declaration const*>> m_declarations;
+	std::map<ASTString, std::vector<Declaration const*>> m_invisibleDeclarations;
 };
 
 }

NameAndTypeResolver.cpp

@@ -53,9 +53,13 @@ void NameAndTypeResolver::resolveNamesAndTypes(ContractDefinition& _contract)
 	m_currentScope = &m_scopes[&_contract];
 
 	linearizeBaseContracts(_contract);
-	// we first import non-functions only as we do not yet know the argument types
-	for (ContractDefinition const* base: _contract.getLinearizedBaseContracts())
-		importInheritedScope(*base, false); // import non-functions
+	std::vector<ContractDefinition const*> realBases(
+		++_contract.getLinearizedBaseContracts().begin(),
+		_contract.getLinearizedBaseContracts().end()
+	);
+
+	for (ContractDefinition const* base: realBases)
+		importInheritedScope(*base);
 
 	for (ASTPointer<StructDefinition> const& structDef: _contract.getDefinedStructs())
 		ReferencesResolver resolver(*structDef, *this, &_contract, nullptr);
@@ -80,8 +84,6 @@ void NameAndTypeResolver::resolveNamesAndTypes(ContractDefinition& _contract)
 	}
 
 	m_currentScope = &m_scopes[&_contract];
-	for (ContractDefinition const* base: _contract.getLinearizedBaseContracts())
-		importInheritedScope(*base, true); // import functions
 
 	// now resolve references inside the code
 	for (ASTPointer<ModifierDefinition> const& modifier: _contract.getFunctionModifiers())
@@ -115,20 +117,41 @@ void NameAndTypeResolver::updateDeclaration(Declaration const& _declaration)
 	solAssert(_declaration.getScope() == nullptr, "Updated declaration outside global scope.");
 }
 
-set<Declaration const*> NameAndTypeResolver::resolveName(ASTString const& _name, Declaration const* _scope) const
+vector<Declaration const*> NameAndTypeResolver::resolveName(ASTString const& _name, Declaration const* _scope) const
 {
 	auto iterator = m_scopes.find(_scope);
 	if (iterator == end(m_scopes))
-		return set<Declaration const*>({});
+		return vector<Declaration const*>({});
 	return iterator->second.resolveName(_name, false);
 }
 
-set<Declaration const*> NameAndTypeResolver::getNameFromCurrentScope(ASTString const& _name, bool _recursive)
+vector<Declaration const*> NameAndTypeResolver::getNameFromCurrentScope(ASTString const& _name, bool _recursive)
 {
 	return m_currentScope->resolveName(_name, _recursive);
 }
 
-void NameAndTypeResolver::importInheritedScope(ContractDefinition const& _base, bool _importFunctions)
+vector<Declaration const*> NameAndTypeResolver::cleanupedDeclarations(Identifier const& _identifier)
+{
+	vector<Declaration const*> result;
+	for (auto declaration : m_currentScope->resolveName(_identifier.getName()))
+	{
+		solAssert(declaration, "");
+		// the declaration is functionDefinition while declarations > 1
+		FunctionDefinition const& functionDefinition = dynamic_cast<FunctionDefinition const&>(*declaration);
+		FunctionType functionType(functionDefinition);
+		for(auto parameter: functionType.getParameterTypes() + functionType.getReturnParameterTypes())
+			if (!parameter)
+				BOOST_THROW_EXCEPTION(
+					DeclarationError() <<
+					errinfo_sourceLocation(_identifier.getLocation()) <<
+					errinfo_comment("Function type can not be used in this context")
+				);
+		//////////delete repitations. check by hasequalparameter types of function type
+	}
+	return result;
+}
+
+void NameAndTypeResolver::importInheritedScope(ContractDefinition const& _base)
 {
 	auto iterator = m_scopes.find(&_base);
 	solAssert(iterator != end(m_scopes), "");
@@ -136,30 +159,7 @@ void NameAndTypeResolver::importInheritedScope(ContractDefinition const& _base,
 		for (auto const& declaration: nameAndDeclaration.second)
 			// Import if it was declared in the base, is not the constructor and is visible in derived classes
 			if (declaration->getScope() == &_base && declaration->isVisibleInDerivedContracts())
-			{
-				auto function = dynamic_cast<FunctionDefinition const*>(declaration);
-				if ((function == nullptr) == _importFunctions)
-					continue;
-				if (!!function)
-				{
-					FunctionType functionType(*function);
-					// only import if a function with the same arguments does not exist yet
-					bool functionWithEqualArgumentsFound = false;
-					for (auto knownDeclaration: m_currentScope->resolveName(nameAndDeclaration.first))
-					{
-						auto knownFunction = dynamic_cast<FunctionDefinition const*>(knownDeclaration);
-						if (!knownFunction)
-							continue; // this is not legal, but will be caught later
-						if (!FunctionType(*knownFunction).hasEqualArgumentTypes(functionType))
-							continue;
-						functionWithEqualArgumentsFound = true;
-						break;
-					}
-					if (functionWithEqualArgumentsFound)
-						continue;
-				}
 				m_currentScope->registerDeclaration(*declaration);
-			}
 }
 
 void NameAndTypeResolver::linearizeBaseContracts(ContractDefinition& _contract) const
@@ -465,10 +465,9 @@ bool ReferencesResolver::visit(Identifier& _identifier)
 			errinfo_comment("Undeclared identifier.")
 		);
 	else if (declarations.size() == 1)
-		_identifier.setReferencedDeclaration(**declarations.begin(), m_currentContract);
+		_identifier.setReferencedDeclaration(*declarations.front(), m_currentContract);
 	else
-		// Duplicate declaration will be checked in checkTypeRequirements()
-		_identifier.setOverloadedDeclarations(declarations);
+		_identifier.setOverloadedDeclarations(m_resolver.cleanupedDeclarations(_identifier));
 	return false;
 }
 

NameAndTypeResolver.h

@@ -56,19 +56,20 @@ public:
 	/// Resolves the given @a _name inside the scope @a _scope. If @a _scope is omitted,
 	/// the global scope is used (i.e. the one containing only the contract).
 	/// @returns a pointer to the declaration on success or nullptr on failure.
-	std::set<Declaration const*> resolveName(ASTString const& _name, Declaration const* _scope = nullptr) const;
+	std::vector<const Declaration *> resolveName(ASTString const& _name, Declaration const* _scope = nullptr) const;
 
 	/// Resolves a name in the "current" scope. Should only be called during the initial
 	/// resolving phase.
-	std::set<Declaration const*> getNameFromCurrentScope(ASTString const& _name, bool _recursive = true);
+	std::vector<Declaration const*> getNameFromCurrentScope(ASTString const& _name, bool _recursive = true);
+
+	std::vector<Declaration const*> cleanupedDeclarations(Identifier const& _identifier);
 
 private:
 	void reset();
 
-	/// Either imports all non-function members or all function members declared directly in the
-	/// given contract (i.e. does not import inherited members) into the current scope if they are
-	///not present already.
-	void importInheritedScope(ContractDefinition const& _base, bool _importFunctions);
+	/// Imports all members declared directly in the given contract (i.e. does not import inherited members)
+	/// into the current scope if they are not present already.
+	void importInheritedScope(ContractDefinition const& _base);
 
 	/// Computes "C3-Linearization" of base contracts and stores it inside the contract.
 	void linearizeBaseContracts(ContractDefinition& _contract) const;

Types.h

@@ -617,6 +617,7 @@ public:
 	/// @returns true if this function can take the given argument types (possibly
 	/// after implicit conversion).
 	bool canTakeArguments(TypePointers const& _arguments) const;
+	/// @returns true if the types of parameters are equal(does't check return parameter types)
 	bool hasEqualArgumentTypes(FunctionType const& _other) const;
 
 	Location const& getLocation() const { return m_location; }