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Diffstat (limited to 'boost/spirit/home/x3/operator/list.hpp')
-rw-r--r-- | boost/spirit/home/x3/operator/list.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/operator/list.hpp b/boost/spirit/home/x3/operator/list.hpp new file mode 100644 index 0000000000..a463a7f9e0 --- /dev/null +++ b/boost/spirit/home/x3/operator/list.hpp @@ -0,0 +1,73 @@ +/*============================================================================= + Copyright (c) 2001-2014 Joel de Guzman + Copyright (c) 2001-2011 Hartmut Kaiser + + 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(SPIRIT_LIST_MARCH_24_2007_1031AM) +#define SPIRIT_LIST_MARCH_24_2007_1031AM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/spirit/home/x3/core/parser.hpp> +#include <boost/spirit/home/x3/support/traits/container_traits.hpp> +#include <boost/spirit/home/x3/support/traits/attribute_of.hpp> +#include <boost/spirit/home/x3/core/detail/parse_into_container.hpp> + +namespace boost { namespace spirit { namespace x3 +{ + template <typename Left, typename Right> + struct list : binary_parser<Left, Right, list<Left, Right>> + { + typedef binary_parser<Left, Right, list<Left, Right>> base_type; + static bool const handles_container = true; + static bool const has_attribute = true; + + list(Left const& left, Right const& right) + : base_type(left, right) {} + + template <typename Iterator, typename Context + , typename RContext, typename Attribute> + bool parse(Iterator& first, Iterator const& last + , Context const& context, RContext& rcontext, Attribute& attr) const + { + // in order to succeed we need to match at least one element + if (!detail::parse_into_container( + this->left, first, last, context, rcontext, attr)) + return false; + + Iterator save = first; + while (this->right.parse(first, last, context, rcontext, unused) + && detail::parse_into_container( + this->left, first, last, context, rcontext, attr)) + { + save = first; + } + + first = save; + return true; + } + }; + + template <typename Left, typename Right> + inline list< + typename extension::as_parser<Left>::value_type + , typename extension::as_parser<Right>::value_type> + operator%(Left const& left, Right const& right) + { + return {as_parser(left), as_parser(right)}; + } +}}} + +namespace boost { namespace spirit { namespace x3 { namespace traits +{ + template <typename Left, typename Right, typename Context> + struct attribute_of<x3::list<Left, Right>, Context> + : traits::build_container< + typename attribute_of<Left, Context>::type> {}; +}}}} + +#endif |