Added thirdparty: boost library

2026-08-26 09:08:20 +00:00 · 2024-01-06 19:55:56 +02:00
parent bf49f439e1
commit bccd1e7051
15683 changed files with 3239840 additions and 0 deletions
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+/*=============================================================================
+    Copyright (c) 2001-2014 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_LEXEME_MARCH_24_2007_0802AM)
+#define BOOST_SPIRIT_X3_LEXEME_MARCH_24_2007_0802AM
+
+#include <boost/spirit/home/x3/support/context.hpp>
+#include <boost/spirit/home/x3/support/unused.hpp>
+#include <boost/spirit/home/x3/core/skip_over.hpp>
+#include <boost/spirit/home/x3/core/parser.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/utility/enable_if.hpp>
+
+namespace boost { namespace spirit { namespace x3
+{
+    template <typename Subject>
+    struct lexeme_directive : unary_parser<Subject, lexeme_directive<Subject>>
+    {
+        typedef unary_parser<Subject, lexeme_directive<Subject> > base_type;
+        static bool const is_pass_through_unary = true;
+        static bool const handles_container = Subject::handles_container;
+
+        constexpr lexeme_directive(Subject const& subject)
+          : base_type(subject) {}
+
+        template <typename Iterator, typename Context
+          , typename RContext, typename Attribute>
+        typename enable_if<has_skipper<Context>, bool>::type
+        parse(Iterator& first, Iterator const& last
+          , Context const& context, RContext& rcontext, Attribute& attr) const
+        {
+            x3::skip_over(first, last, context);
+            auto const& skipper = x3::get<skipper_tag>(context);
+
+            typedef unused_skipper<
+                typename remove_reference<decltype(skipper)>::type>
+            unused_skipper_type;
+            unused_skipper_type unused_skipper(skipper);
+
+            return this->subject.parse(
+                first, last
+              , make_context<skipper_tag>(unused_skipper, context)
+              , rcontext
+              , attr);
+        }
+
+        template <typename Iterator, typename Context
+          , typename RContext, typename Attribute>
+        typename disable_if<has_skipper<Context>, bool>::type
+        parse(Iterator& first, Iterator const& last
+          , Context const& context, RContext& rcontext, Attribute& attr) const
+        {
+            //  no need to pre-skip if skipper is unused
+            return this->subject.parse(
+                first, last
+              , context
+              , rcontext
+              , attr);
+        }
+    };
+
+    struct lexeme_gen
+    {
+        template <typename Subject>
+        constexpr lexeme_directive<typename extension::as_parser<Subject>::value_type>
+        operator[](Subject const& subject) const
+        {
+            return { as_parser(subject) };
+        }
+    };
+
+    constexpr auto lexeme = lexeme_gen{};
+}}}
+
+#endif