Accessors for exceptions.

Author: chriseth

liblangutil/Exceptions.cpp

@@ -75,6 +75,16 @@ Error::Error(
 		*this << util::errinfo_comment(_description);
 }
 
+SourceLocation const* Error::sourceLocation() const noexcept
+{
+	return boost::get_error_info<errinfo_sourceLocation>(*this);
+}
+
+SecondarySourceLocation const* Error::secondarySourceLocation() const noexcept
+{
+	return boost::get_error_info<errinfo_secondarySourceLocation>(*this);
+}
+
 optional<Error::Severity> Error::severityFromString(string _input)
 {
 	boost::algorithm::to_lower(_input);

liblangutil/Exceptions.h

@@ -197,6 +197,9 @@ class Error: virtual public util::Exception
 	Type type() const { return m_type; }
 	std::string const& typeName() const { return m_typeName; }
 
+	SourceLocation const* sourceLocation() const noexcept;
+	SecondarySourceLocation const* secondarySourceLocation() const noexcept;
+
 	/// helper functions
 	static Error const* containsErrorOfType(ErrorList const& _list, Error::Type _type)
 	{
@@ -206,7 +209,7 @@ class Error: virtual public util::Exception
 		return nullptr;
 	}
 
-	static Severity errorSeverity(Type _type)
+	static constexpr Severity errorSeverity(Type _type)
 	{
 		if (_type == Type::Info)
 			return Severity::Info;

libsolidity/interface/StandardCompiler.cpp

@@ -129,7 +129,7 @@ Json::Value formatErrorWithException(
 		_charStreamProvider
 	);
 
-	if (string const* description = boost::get_error_info<util::errinfo_comment>(_exception))
+	if (string const* description = _exception.comment())
 		message = ((_message.length() > 0) ? (_message + ":") : "") + *description;
 	else
 		message = _message;

libsolutil/Exceptions.h

@@ -39,8 +39,6 @@ struct Exception: virtual std::exception, virtual boost::exception
 
 	/// @returns the errinfo_comment of this exception.
 	std::string const* comment() const noexcept;
-
-private:
 };
 
 /// Throws an exception with a given description and extra information about the location the

test/libsolidity/AnalysisFramework.cpp

@@ -100,7 +100,7 @@ ErrorList AnalysisFramework::filterErrors(ErrorList const& _errorList, bool _inc
 		for (auto const& messagePrefix: m_messagesToCut)
 			if (currentError->comment()->find(messagePrefix) == 0)
 			{
-				SourceLocation const* location = boost::get_error_info<errinfo_sourceLocation>(*currentError);
+				SourceLocation const* location = currentError->sourceLocation();
 				// sufficient for now, but in future we might clone the error completely, including the secondary location
 				newError = make_shared<Error>(
 					currentError->errorId(),

test/libsolidity/SyntaxTest.cpp

@@ -118,9 +118,10 @@ void SyntaxTest::filterObtainedErrors()
 {
 	for (auto const& currentError: filterErrors(compiler().errors(), true))
 	{
-		int locationStart = -1, locationEnd = -1;
+		int locationStart = -1;
+		int locationEnd = -1;
 		string sourceName;
-		if (auto location = boost::get_error_info<errinfo_sourceLocation>(*currentError))
+		if (SourceLocation const* location = currentError->sourceLocation())
 		{
 			solAssert(location->sourceName, "");
 			sourceName = *location->sourceName;

test/libyul/SyntaxTest.cpp

@@ -54,7 +54,7 @@ void SyntaxTest::parseAndAnalyze()
 		int locationStart = -1;
 		int locationEnd = -1;
 
-		if (auto location = boost::get_error_info<errinfo_sourceLocation>(*error))
+		if (SourceLocation const* location = error->sourceLocation())
 		{
 			locationStart = location->start;
 			locationEnd = location->end;