Added thirdparty: boost library

thirdparty/include/boost/url/rfc/detail/query_part_rule.hpp

@@ -0,0 +1,69 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// 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)
+//
+// Official repository: https://github.com/boostorg/url
+//
+
+#ifndef BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
+#define BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
+
+#include <boost/url/detail/config.hpp>
+#include <boost/url/error_types.hpp>
+#include <boost/url/pct_string_view.hpp>
+#include <boost/url/rfc/query_rule.hpp>
+#include <boost/url/grammar/parse.hpp>
+#include <cstdlib>
+
+namespace boost {
+namespace urls {
+namespace detail {
+
+/** Rule for query-part
+
+    @par BNF
+    @code
+    query-part    = [ "?" query ]
+    @endcode
+*/
+struct query_part_rule_t
+{
+    struct value_type
+    {
+        pct_string_view query;
+        std::size_t count = 0;
+        bool has_query = false;
+    };
+
+    auto
+    parse(
+        char const*& it,
+        char const* end
+            ) const noexcept ->
+        system::result<value_type>
+    {
+        if( it == end ||
+            *it != '?')
+            return {};
+        ++it;
+        auto rv = grammar::parse(
+            it, end, query_rule);
+        if(! rv)
+            return rv.error();
+        value_type t;
+        t.query = rv->buffer();
+        t.count = rv->size();
+        t.has_query = true;
+        return t;
+    }
+};
+
+constexpr query_part_rule_t query_part_rule{};
+
+} // detail
+} // urls
+} // boost
+
+#endif