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Diffstat (limited to '3rdParty/Boost/src/boost/proto/context/detail/callable_eval.hpp')
-rw-r--r--3rdParty/Boost/src/boost/proto/context/detail/callable_eval.hpp113
1 files changed, 113 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/proto/context/detail/callable_eval.hpp b/3rdParty/Boost/src/boost/proto/context/detail/callable_eval.hpp
new file mode 100644
index 0000000..abe7803
--- /dev/null
+++ b/3rdParty/Boost/src/boost/proto/context/detail/callable_eval.hpp
@@ -0,0 +1,113 @@
+#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
+
+ #include <boost/proto/context/detail/preprocessed/callable_eval.hpp>
+
+#elif !defined(BOOST_PP_IS_ITERATING)
+
+ #define BOOST_PROTO_CHILD_N_TYPE(Z, N, Expr) \
+ typedef typename proto::result_of::child_c<Expr const &, N>::type BOOST_PP_CAT(child, N); \
+ /**/
+
+ #define BOOST_PROTO_CHILD_N(Z, N, expr) \
+ proto::child_c<N>(expr) \
+ /**/
+
+ #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
+ #pragma wave option(preserve: 2, line: 0, output: "preprocessed/callable_eval.hpp")
+ #endif
+
+ ///////////////////////////////////////////////////////////////////////////////
+ /// \file callable_eval.hpp
+ /// Contains specializations of the callable_eval\<\> class template.
+ //
+ // Copyright 2008 Eric Niebler. 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(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
+ #pragma wave option(preserve: 1)
+ #endif
+
+ #define BOOST_PP_ITERATION_PARAMS_1 \
+ (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/context/detail/callable_eval.hpp>))
+ #include BOOST_PP_ITERATE()
+
+ #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
+ #pragma wave option(output: null)
+ #endif
+
+ #undef BOOST_PROTO_CHILD_N_TYPE
+ #undef BOOST_PROTO_CHILD_N
+
+#else
+
+ #define N BOOST_PP_ITERATION()
+
+ namespace detail
+ {
+ template<typename Expr, typename Context>
+ struct is_expr_handled<Expr, Context, N>
+ {
+ static callable_context_wrapper<Context> &sctx_;
+ static Expr &sexpr_;
+ static typename Expr::proto_tag &stag_;
+
+ static const bool value =
+ sizeof(yes_type) ==
+ sizeof(
+ detail::check_is_expr_handled(
+ (sctx_(
+ stag_
+ BOOST_PP_ENUM_TRAILING(N, BOOST_PROTO_CHILD_N, sexpr_)
+ ), 0)
+ )
+ );
+
+ typedef mpl::bool_<value> type;
+ };
+ }
+
+ namespace context
+ {
+ /// \brief A BinaryFunction that accepts a Proto expression and a
+ /// callable context and calls the context with the expression tag
+ /// and children as arguments, effectively fanning the expression
+ /// out.
+ ///
+ /// <tt>callable_eval\<\></tt> requires that \c Context is a
+ /// PolymorphicFunctionObject that can be invoked with \c Expr's
+ /// tag and children as expressions, as follows:
+ ///
+ /// \code
+ /// context(Expr::proto_tag(), child_c\<0\>(expr), child_c\<1\>(expr), ...)
+ /// \endcode
+ template<typename Expr, typename Context>
+ struct callable_eval<Expr, Context, N>
+ {
+ BOOST_PP_REPEAT(N, BOOST_PROTO_CHILD_N_TYPE, Expr)
+
+ typedef
+ typename BOOST_PROTO_RESULT_OF<
+ Context(
+ typename Expr::proto_tag
+ BOOST_PP_ENUM_TRAILING_PARAMS(N, child)
+ )
+ >::type
+ result_type;
+
+ /// \param expr The current expression
+ /// \param context The callable evaluation context
+ /// \return <tt>context(Expr::proto_tag(), child_c\<0\>(expr), child_c\<1\>(expr), ...)</tt>
+ result_type operator ()(Expr &expr, Context &context) const
+ {
+ return context(
+ typename Expr::proto_tag()
+ BOOST_PP_ENUM_TRAILING(N, BOOST_PROTO_CHILD_N, expr)
+ );
+ }
+ };
+ }
+
+ #undef N
+
+#endif