Added thirdparty: boost library

2026-08-22 07:08:16 +00:00 · 2024-01-06 19:55:56 +02:00
parent bf49f439e1
commit bccd1e7051
15683 changed files with 3239840 additions and 0 deletions
@@ -0,0 +1,76 @@
+/*=============================================================================
+    Copyright (c) 1998-2003 Joel de Guzman
+    http://spirit.sourceforge.net/
+
+  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_RULE_ALIAS_HPP)
+#define BOOST_SPIRIT_RULE_ALIAS_HPP
+
+#include <boost/spirit/home/classic/namespace.hpp>
+#include <boost/spirit/home/classic/core/parser.hpp>
+
+namespace boost { namespace spirit {
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
+
+    ///////////////////////////////////////////////////////////////////////////
+    //
+    //  rule_alias class
+    //
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename ParserT>
+    class rule_alias :
+        public parser<rule_alias<ParserT> >
+    {
+    public:
+    
+        typedef rule_alias<ParserT> self_t;
+    
+        template <typename ScannerT>
+        struct result 
+        { 
+            typedef typename parser_result<ParserT, ScannerT>::type type;
+        };
+    
+        rule_alias()
+        : ptr(0) {}
+        
+        rule_alias(ParserT const& p)
+        : ptr(&p) {}
+        
+        rule_alias&
+        operator=(ParserT const& p)
+        {
+            ptr = &p;
+            return *this;
+        }
+    
+        template <typename ScannerT>
+        typename parser_result<ParserT, ScannerT>::type
+        parse(ScannerT const& scan) const
+        { 
+            if (ptr)
+                return ptr->parse(scan);
+            else
+                return scan.no_match();
+        }
+        
+        ParserT const&
+        get() const
+        {
+            BOOST_ASSERT(ptr != 0);
+            return *ptr;
+        }
+    
+    private:
+    
+        ParserT const* ptr; // hold it by pointer
+    };
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_END
+
+}} // namespace BOOST_SPIRIT_CLASSIC_NS
+
+#endif