added Error class for all kind of errors

Conflicts:
	libsolidity/Exceptions.h

libsolidity/AST.cpp

@@ -51,9 +51,9 @@ ASTAnnotation& ASTNode::annotation() const
 	return *m_annotation;
 }
 
-TypeError ASTNode::createTypeError(string const& _description) const
+Error ASTNode::createTypeError(string const& _description) const
 {
-	return TypeError() << errinfo_sourceLocation(location()) << errinfo_comment(_description);
+	return Error(Error::Type::TypeError) << errinfo_sourceLocation(location()) << errinfo_comment(_description);
 }
 
 map<FixedHash<4>, FunctionTypePointer> ContractDefinition::interfaceFunctions() const

libsolidity/AST.h

@@ -75,7 +75,7 @@ public:
 
 	/// Creates a @ref TypeError exception and decorates it with the location of the node and
 	/// the given description
-	TypeError createTypeError(std::string const& _description) const;
+	Error createTypeError(std::string const& _description) const;
 
 	///@todo make this const-safe by providing a different way to access the annotation
 	virtual ASTAnnotation& annotation() const;
@@ -660,10 +660,14 @@ class MagicVariableDeclaration: public Declaration
 public:
 	MagicVariableDeclaration(ASTString const& _name, std::shared_ptr<Type const> const& _type):
 		Declaration(SourceLocation(), std::make_shared<ASTString>(_name)), m_type(_type) {}
-	virtual void accept(ASTVisitor&) override { BOOST_THROW_EXCEPTION(InternalCompilerError()
-							<< errinfo_comment("MagicVariableDeclaration used inside real AST.")); }
-	virtual void accept(ASTConstVisitor&) const override { BOOST_THROW_EXCEPTION(InternalCompilerError()
-							<< errinfo_comment("MagicVariableDeclaration used inside real AST.")); }
+	virtual void accept(ASTVisitor&) override
+	{
+		BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("MagicVariableDeclaration used inside real AST."));
+	}
+	virtual void accept(ASTConstVisitor&) const override
+	{
+		BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("MagicVariableDeclaration used inside real AST."));
+	}
 
 	virtual TypePointer type(ContractDefinition const*) const override { return m_type; }
 

libsolidity/CompilerStack.cpp

@@ -107,7 +107,7 @@ bool CompilerStack::parse()
 	resolveImports();
 
 	m_globalContext = make_shared<GlobalContext>();
-	NameAndTypeResolver resolver(m_globalContext->declarations());
+	NameAndTypeResolver resolver(m_globalContext->declarations(), m_errors);
 	for (Source const* source: m_sourceOrder)
 		resolver.registerDeclarations(*source->ast);
 	for (Source const* source: m_sourceOrder)
@@ -345,7 +345,7 @@ void CompilerStack::resolveImports()
 				string const& id = import->identifier();
 				if (!m_sources.count(id))
 					BOOST_THROW_EXCEPTION(
-						ParserError()
+						Error(Error::Type::ParserError)
 							  << errinfo_sourceLocation(import->location())
 							  << errinfo_comment("Source not found.")
 					);

libsolidity/CompilerStack.h

@@ -33,6 +33,7 @@
 #include <libdevcore/FixedHash.h>
 #include <libevmasm/SourceLocation.h>
 #include <libevmasm/LinkerObject.h>
+#include <libsolidity/Exceptions.h>
 
 namespace dev
 {
@@ -164,7 +165,7 @@ public:
 	std::tuple<int, int, int, int> positionFromSourceLocation(SourceLocation const& _sourceLocation) const;
 
 	/// @returns the list of errors that occured during parsing and type checking.
-	std::vector<std::shared_ptr<Error const>> const& errors() const { return m_errors; }
+	ErrorList const& errors() const { return m_errors; }
 
 private:
 	/**
@@ -212,7 +213,7 @@ private:
 	std::shared_ptr<GlobalContext> m_globalContext;
 	std::vector<Source const*> m_sourceOrder;
 	std::map<std::string const, Contract> m_contracts;
-	std::vector<std::shared_ptr<Error const>> m_errors;
+	ErrorList m_errors;
 };
 
 }

libsolidity/Exceptions.h

@@ -31,13 +31,51 @@ namespace dev
 {
 namespace solidity
 {
-struct Error: virtual Exception {};
 
-struct ParserError: virtual Error {};
-struct TypeError: virtual Error {};
-struct DeclarationError: virtual Error {};
-struct DocstringParsingError: virtual Error {};
-struct Warning: virtual Error {};
+class Error: virtual public Exception
+{
+public:
+	enum class Type
+	{
+		DeclarationError,
+		DocstringParsingError,
+		ParserError,
+		TypeError,
+		Warning
+	};
+
+	Error(Type _type) :	m_type(_type)
+	{
+		switch(m_type)
+		{
+			case Type::DeclarationError:
+				m_typeName = "Declaration Error";
+				break;
+			case Type::DocstringParsingError:
+				m_typeName = "Docstring Parsing Error";
+				break;
+			case Type::ParserError:
+				m_typeName = "Parser Error";
+				break;
+			case Type::TypeError:
+				m_typeName = "Type Error";
+				break;
+			case Type::Warning:
+				m_typeName = "Warning";
+				break;
+			default:
+				m_typeName = "Error";
+				break;
+		}
+	}
+
+	Type type() { return m_type; }
+	std::string const& typeName() const { return m_typeName; }
+
+private:
+	Type m_type;
+	std::string m_typeName;
+};
 
 struct CompilerError: virtual Exception {};
 struct InternalCompilerError: virtual Exception {};
@@ -56,6 +94,8 @@ public:
 	std::vector<errorSourceLocationInfo> infos;
 };
 
+
+using ErrorList = std::vector<std::shared_ptr<Error const>>;
 using errinfo_sourceLocation = boost::error_info<struct tag_sourceLocation, SourceLocation>;
 using errinfo_secondarySourceLocation = boost::error_info<struct tag_secondarySourceLocation, SecondarySourceLocation>;
 

libsolidity/InterfaceHandler.cpp

@@ -243,7 +243,7 @@ string InterfaceHandler::devDocumentation(ContractDefinition const& _contractDef
 				if (find(paramNames.begin(), paramNames.end(), pair.first) == paramNames.end())
 					// LTODO: mismatching parameter name, throw some form of warning and not just an exception
 					BOOST_THROW_EXCEPTION(
-						DocstringParsingError() <<
+						Error(Error::Type::DocstringParsingError) <<
 						errinfo_comment("documented parameter \"" + pair.first + "\" not found in the parameter list of the function.")
 					);					
 				params[pair.first] = pair.second;
@@ -310,7 +310,7 @@ string::const_iterator InterfaceHandler::parseDocTagParam(
 	// find param name
 	auto currPos = find(_pos, _end, ' ');
 	if (currPos == _end)
-		BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("End of param name not found" + string(_pos, _end)));
+		BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("End of param name not found" + string(_pos, _end)));
 
 
 	auto paramName = string(_pos, currPos);
@@ -369,7 +369,7 @@ string::const_iterator InterfaceHandler::parseDocTag(
 				return parseDocTagLine(_pos, _end, m_author, DocTagType::Author, false);
 			else
 				// LTODO: for now this else makes no sense but later comments will go to more language constructs
-				BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@author tag is legal only for contracts"));
+				BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("@author tag is legal only for contracts"));
 		}
 		else if (_tag == "title")
 		{
@@ -377,13 +377,13 @@ string::const_iterator InterfaceHandler::parseDocTag(
 				return parseDocTagLine(_pos, _end, m_title, DocTagType::Title, false);
 			else
 				// LTODO: Unknown tag, throw some form of warning and not just an exception
-				BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@title tag is legal only for contracts"));
+				BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("@title tag is legal only for contracts"));
 		}
 		else if (_tag == "param")
 			return parseDocTagParam(_pos, _end);
 		else
 			// LTODO: Unknown tag, throw some form of warning and not just an exception
-			BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("Unknown tag " + _tag + " encountered"));
+			BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("Unknown tag " + _tag + " encountered"));
 	}
 	else
 		return appendDocTag(_pos, _end, _owner);
@@ -410,13 +410,13 @@ string::const_iterator InterfaceHandler::appendDocTag(
 			return parseDocTagLine(_pos, _end, m_author, DocTagType::Author, true);
 		else
 			// LTODO: Unknown tag, throw some form of warning and not just an exception
-			BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@author tag in illegal comment"));
+			BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("@author tag in illegal comment"));
 	case DocTagType::Title:
 		if (_owner == CommentOwner::Contract)
 			return parseDocTagLine(_pos, _end, m_title, DocTagType::Title, true);
 		else
 			// LTODO: Unknown tag, throw some form of warning and not just an exception
-			BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@title tag in illegal comment"));
+			BOOST_THROW_EXCEPTION(Error(Error::Type::DocstringParsingError) << errinfo_comment("@title tag in illegal comment"));
 	case DocTagType::Param:
 		return appendDocTagParam(_pos, _end);
 	default:
@@ -451,7 +451,7 @@ void InterfaceHandler::parseDocString(string const& _string, CommentOwner _owner
 			auto tagNameEndPos = firstSpaceOrNl(tagPos, end);
 			if (tagNameEndPos == end)
 				BOOST_THROW_EXCEPTION(
-					DocstringParsingError() <<
+					Error(Error::Type::DocstringParsingError) <<
 					errinfo_comment("End of tag " + string(tagPos, tagNameEndPos) + "not found"));
 
 			currPos = parseDocTag(tagNameEndPos + 1, end, string(tagPos + 1, tagNameEndPos), _owner);

libsolidity/NameAndTypeResolver.cpp

@@ -33,8 +33,10 @@ namespace solidity
 {
 
 NameAndTypeResolver::NameAndTypeResolver(
-	vector<Declaration const*> const& _globals
-)
+	vector<Declaration const*> const& _globals,
+	ErrorList& _errors
+) :
+	m_errors(_errors)
 {
 	for (Declaration const* declaration: _globals)
 		m_scopes[nullptr].registerDeclaration(*declaration);
@@ -163,7 +165,7 @@ vector<Declaration const*> NameAndTypeResolver::cleanedDeclarations(
 		for (auto parameter: functionType.parameterTypes() + functionType.returnParameterTypes())
 			if (!parameter)
 				BOOST_THROW_EXCEPTION(
-					DeclarationError() <<
+					Error(Error::Type::DeclarationError) <<
 					errinfo_sourceLocation(_identifier.location()) <<
 					errinfo_comment("Function type can not be used in this context")
 				);
@@ -408,7 +410,7 @@ void DeclarationRegistrationHelper::registerDeclaration(Declaration& _declaratio
 		}
 
 		BOOST_THROW_EXCEPTION(
-			DeclarationError() <<
+			Error(Error::Type::DeclarationError) <<
 			errinfo_sourceLocation(secondDeclarationLocation) <<
 			errinfo_comment("Identifier already declared.") <<
 			errinfo_secondarySourceLocation(

libsolidity/NameAndTypeResolver.h

@@ -42,7 +42,7 @@ namespace solidity
 class NameAndTypeResolver: private boost::noncopyable
 {
 public:
-	NameAndTypeResolver(std::vector<Declaration const*> const& _globals);
+	NameAndTypeResolver(std::vector<Declaration const*> const& _globals, ErrorList& _errors);
 	/// Registers all declarations found in the source unit.
 	void registerDeclarations(SourceUnit& _sourceUnit);
 	/// Resolves all names and types referenced from the given contract.
@@ -91,6 +91,7 @@ private:
 	std::map<ASTNode const*, DeclarationContainer> m_scopes;
 
 	DeclarationContainer* m_currentScope = nullptr;
+	ErrorList& m_errors;
 };
 
 /**

libsolidity/Parser.cpp

@@ -1156,9 +1156,9 @@ ASTPointer<ParameterList> Parser::createEmptyParameterList()
 	return nodeFactory.createNode<ParameterList>(vector<ASTPointer<VariableDeclaration>>());
 }
 
-ParserError Parser::createParserError(string const& _description) const
+Error Parser::createParserError(string const& _description) const
 {
-	return ParserError() <<
+	return Error(Error::Type::ParserError) <<
 		errinfo_sourceLocation(SourceLocation(position(), position(), sourceName())) <<
 		errinfo_comment(_description);
 }

libsolidity/Parser.h

@@ -147,7 +147,7 @@ private:
 
 	/// Creates a @ref ParserError exception and annotates it with the current position and the
 	/// given @a _description.
-	ParserError createParserError(std::string const& _description) const;
+	Error createParserError(std::string const& _description) const;
 
 	std::shared_ptr<Scanner> m_scanner;
 	/// Flag that signifies whether '_' is parsed as a PlaceholderStatement or a regular identifier.

libsolidity/TypeChecker.cpp

@@ -67,6 +67,7 @@ TypePointer const& TypeChecker::type(VariableDeclaration const& _variable) const
 
 bool TypeChecker::visit(ContractDefinition const& _contract)
 {
+
 	// We force our own visiting order here.
 	ASTNode::listAccept(_contract.definedStructs(), *this);
 	ASTNode::listAccept(_contract.baseContracts(), *this);
@@ -87,7 +88,7 @@ bool TypeChecker::visit(ContractDefinition const& _contract)
 		{
 			if (fallbackFunction)
 			{
-				auto err = make_shared<DeclarationError>();
+				auto err = make_shared<Error>(Error::Type::DeclarationError);
 				*err << errinfo_comment("Only one fallback function is allowed.");
 				m_errors.push_back(err);
 			}
@@ -143,7 +144,7 @@ void TypeChecker::checkContractDuplicateFunctions(ContractDefinition const& _con
 		for (; it != functions[_contract.name()].end(); ++it)
 			ssl.append("Another declaration is here:", (*it)->location());
 
-		auto err = make_shared<DeclarationError>();
+		auto err = make_shared<Error>(Error(Error::Type::DeclarationError));
 		*err <<
 			errinfo_sourceLocation(functions[_contract.name()].front()->location()) <<
 			errinfo_comment("More than one constructor defined.") <<
@@ -157,7 +158,7 @@ void TypeChecker::checkContractDuplicateFunctions(ContractDefinition const& _con
 			for (size_t j = i + 1; j < overloads.size(); ++j)
 				if (FunctionType(*overloads[i]).hasEqualArgumentTypes(FunctionType(*overloads[j])))
 				{
-					auto err = make_shared<DeclarationError>();
+					auto err = make_shared<Error>(Error(Error::Type::DeclarationError));
 					*err <<
 						errinfo_sourceLocation(overloads[j]->location()) <<
 						errinfo_comment("Function with same name and arguments defined twice.") <<
@@ -1251,7 +1252,7 @@ void TypeChecker::requireLValue(Expression const& _expression)
 
 void TypeChecker::typeError(ASTNode const& _node, string const& _description)
 {
-	auto err = make_shared<TypeError>();
+	auto err = make_shared<Error>(Error(Error::Type::TypeError));;
 	*err <<
 		errinfo_sourceLocation(_node.location()) <<
 		errinfo_comment(_description);

libsolidity/Types.cpp

@@ -50,7 +50,7 @@ void StorageOffsets::computeOffsets(TypePointers const& _types)
 			byteOffset = 0;
 		}
 		if (slotOffset >= bigint(1) << 256)
-			BOOST_THROW_EXCEPTION(TypeError() << errinfo_comment("Object too large for storage."));
+			BOOST_THROW_EXCEPTION(Error(Error::Type::TypeError) << errinfo_comment("Object too large for storage."));
 		offsets[i] = make_pair(u256(slotOffset), byteOffset);
 		solAssert(type->storageSize() >= 1, "Invalid storage size.");
 		if (type->storageSize() == 1 && byteOffset + type->storageBytes() <= 32)
@@ -64,7 +64,7 @@ void StorageOffsets::computeOffsets(TypePointers const& _types)
 	if (byteOffset > 0)
 		++slotOffset;
 	if (slotOffset >= bigint(1) << 256)
-		BOOST_THROW_EXCEPTION(TypeError() << errinfo_comment("Object too large for storage."));
+		BOOST_THROW_EXCEPTION(Error(Error::Type::TypeError) << errinfo_comment("Object too large for storage."));
 	m_storageSize = u256(slotOffset);
 	swap(m_offsets, offsets);
 }
@@ -805,7 +805,7 @@ u256 ArrayType::storageSize() const
 	else
 		size = bigint(length()) * baseType()->storageSize();
 	if (size >= bigint(1) << 256)
-		BOOST_THROW_EXCEPTION(TypeError() << errinfo_comment("Array too large for storage."));
+		BOOST_THROW_EXCEPTION(Error(Error::Type::TypeError) << errinfo_comment("Array too large for storage."));
 	return max<u256>(1, u256(size));
 }