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/*=============================================================================
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>
#include <boost/spirit/home/x3/support/traits/is_variant.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
, forward_ast<T>& ast, Context const& context)
{
this->on_success(first, last, ast.get(), context);
}
template <typename T, typename Iterator, typename Context>
inline typename disable_if<traits::is_variant<T>>::type 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
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