| /*============================================================================= |
| 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__ANNOTATE_ON_SUCCESS_HPP) |
| #define BOOST_SPIRIT_X3__ANNOTATE_ON_SUCCESS_HPP |
| |
| #include <boost/spirit/home/x3/support/ast/variant.hpp> |
| #include <boost/spirit/home/x3/support/context.hpp> |
| #include <boost/spirit/home/x3/support/utility/error_reporting.hpp> |
| #include <boost/spirit/home/x3/support/utility/lambda_visitor.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // The on_success handler tags the AST with the iterator position |
| // for error handling. |
| // |
| // The on_success handler also ties the AST to a vector of iterator |
| // positions for the purpose of subsequent semantic error handling |
| // when the program is being compiled. See x3::position_cache in |
| // x3/support/ast. |
| // |
| // We'll ask the X3's error_handler utility to do these. |
| /////////////////////////////////////////////////////////////////////////// |
| |
| struct annotate_on_success |
| { |
| template <typename Iterator, typename Context, typename... Types> |
| inline void on_success(Iterator const& first, Iterator const& last |
| , variant<Types...>& ast, Context const& context) |
| { |
| ast.apply_visitor(x3::make_lambda_visitor<void>([&](auto& node) |
| { |
| this->on_success(first, last, node, context); |
| })); |
| } |
| |
| template <typename T, typename Iterator, typename Context> |
| inline void on_success(Iterator const& first, Iterator const& last |
| , T& ast, Context const& context) |
| { |
| auto& error_handler = x3::get<error_handler_tag>(context).get(); |
| error_handler.tag(ast, first, last); |
| } |
| }; |
| }}} |
| |
| #endif |