/*============================================================================= Copyright (c) 2001-2015 Joel de Guzman Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) =============================================================================*/ #if !defined(BOOST_SPIRIT_X3_REPR_ERROR_HANDLER_HPP) #define BOOST_SPIRIT_X3_REPR_ERROR_HANDLER_HPP #include "rexpr.hpp" #include <boost/spirit/home/x3/support/ast/position_tagged.hpp> #include <boost/spirit/home/x3/support/utility/error_reporting.hpp> #include <map> namespace rexpr { namespace parser { namespace x3 = boost::spirit::x3; //////////////////////////////////////////////////////////////////////////// // Our error handler //////////////////////////////////////////////////////////////////////////// // X3 Error Handler Utility template <typename Iterator> using error_handler = x3::error_handler<Iterator>; // tag used to get our error handler from the context using error_handler_tag = x3::error_handler_tag; struct error_handler_base { error_handler_base(); template <typename Iterator, typename Exception, typename Context> x3::error_handler_result on_error( Iterator& first, Iterator const& last , Exception const& x, Context const& context); std::map<std::string, std::string> id_map; }; //////////////////////////////////////////////////////////////////////////// // Implementation //////////////////////////////////////////////////////////////////////////// inline error_handler_base::error_handler_base() { id_map["rexpr"] = "RExpression"; id_map["rexpr_value"] = "Value"; id_map["rexpr_key_value"] = "Key value pair"; } template <typename Iterator, typename Exception, typename Context> inline x3::error_handler_result error_handler_base::on_error( Iterator& first, Iterator const& last , Exception const& x, Context const& context) { std::string which = x.which(); auto iter = id_map.find(which); if (iter != id_map.end()) which = iter->second; std::string message = "Error! Expecting: " + which + " here:"; auto& error_handler = x3::get<error_handler_tag>(context).get(); error_handler(x.where(), message); return x3::error_handler_result::fail; } }} #endif