Code generation for errors.

libsolidity/codegen/ir/IRGeneratorForStatements.h

@@ -106,6 +106,15 @@ private:
 	/// Generates code to rethrow an exception.
 	void rethrow();
 
+	/// Generates code to revert with an error. The error arguments are assumed to
+	/// be already evaluated and available in local IRVariables, but not yet
+	/// converted.
+	void revertWithError(
+		std::string const& _signature,
+		std::vector<Type const*> const& _parameterTypes,
+		std::vector<ASTPointer<Expression const>> const& _errorArguments
+	);
+
 	void handleVariableReference(
 		VariableDeclaration const& _variable,
 		Expression const& _referencingExpression