Added thirdparty: boost library

2026-08-25 16:48:10 +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) 2001-2011 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_EPS_MARCH_23_2007_0454PM)
+#define BOOST_SPIRIT_EPS_MARCH_23_2007_0454PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/qi/domain.hpp>
+#include <boost/spirit/home/qi/skip_over.hpp>
+#include <boost/spirit/home/qi/meta_compiler.hpp>
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/common_terminals.hpp>
+#include <boost/fusion/include/at.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+
+namespace boost { namespace spirit
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // Enablers
+    ///////////////////////////////////////////////////////////////////////////
+    template <>
+    struct use_terminal<qi::domain, tag::eps>       // enables eps
+      : mpl::true_ {};
+
+    template <typename A0>
+    struct use_terminal<qi::domain
+      , terminal_ex<tag::eps, fusion::vector1<A0> > // enables eps(bool-condition)
+    > : is_convertible<A0, bool> {};
+
+    template <>                                     // enables eps(f)
+    struct use_lazy_terminal<
+        qi::domain, tag::eps, 1 /*arity*/
+    > : mpl::true_ {};
+}}
+
+namespace boost { namespace spirit { namespace qi
+{
+#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
+    using spirit::eps;
+#endif
+    using spirit::eps_type;
+
+    struct eps_parser : primitive_parser<eps_parser>
+    {
+        template <typename Context, typename Iterator>
+        struct attribute
+        {
+            typedef unused_type type;
+        };
+
+        template <typename Iterator, typename Context
+          , typename Skipper, typename Attribute>
+        bool parse(Iterator& first, Iterator const& last
+          , Context& /*context*/, Skipper const& skipper
+          , Attribute& /*attr*/) const
+        {
+            qi::skip_over(first, last, skipper);
+            return true;
+        }
+
+        template <typename Context>
+        info what(Context& /*context*/) const
+        {
+            return info("eps");
+        }
+    };
+
+    struct semantic_predicate : primitive_parser<semantic_predicate>
+    {
+        template <typename Context, typename Iterator>
+        struct attribute
+        {
+            typedef unused_type type;
+        };
+
+        semantic_predicate(bool predicate_)
+          : predicate(predicate_) {}
+
+        template <typename Iterator, typename Context
+          , typename Skipper, typename Attribute>
+        bool parse(Iterator& first, Iterator const& last
+          , Context& /*context*/, Skipper const& skipper
+          , Attribute& /*attr*/) const
+        {
+            qi::skip_over(first, last, skipper);
+            return predicate;
+        }
+
+        template <typename Context>
+        info what(Context& /*context*/) const
+        {
+            return info("semantic-predicate");
+        }
+
+        bool predicate;
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+    // Parser generators: make_xxx function (objects)
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Modifiers>
+    struct make_primitive<tag::eps, Modifiers>
+    {
+        typedef eps_parser result_type;
+        result_type operator()(unused_type, unused_type) const
+        {
+            return result_type();
+        }
+    };
+
+    template <typename Modifiers, typename A0>
+    struct make_primitive<
+        terminal_ex<tag::eps, fusion::vector1<A0> >
+      , Modifiers>
+    {
+        typedef semantic_predicate result_type;
+        template <typename Terminal>
+        result_type operator()(Terminal const& term, unused_type) const
+        {
+            return result_type(fusion::at_c<0>(term.args) ? true : false);
+        }
+    };
+}}}
+
+#endif