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Diffstat (limited to '3rdParty/Boost/src/boost/proto/transform/detail/lazy.hpp')
-rw-r--r--3rdParty/Boost/src/boost/proto/transform/detail/lazy.hpp79
1 files changed, 79 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/proto/transform/detail/lazy.hpp b/3rdParty/Boost/src/boost/proto/transform/detail/lazy.hpp
new file mode 100644
index 0000000..fbd1365
--- /dev/null
+++ b/3rdParty/Boost/src/boost/proto/transform/detail/lazy.hpp
@@ -0,0 +1,79 @@
+#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
+
+ #include <boost/proto/transform/detail/preprocessed/lazy.hpp>
+
+#elif !defined(BOOST_PP_IS_ITERATING)
+
+ #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
+ #pragma wave option(preserve: 2, line: 0, output: "preprocessed/lazy.hpp")
+ #endif
+
+ ///////////////////////////////////////////////////////////////////////////////
+ /// \file lazy.hpp
+ /// Contains definition of the lazy<> transform.
+ //
+ // 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, (0, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/lazy.hpp>))
+ #include BOOST_PP_ITERATE()
+
+ #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
+ #pragma wave option(output: null)
+ #endif
+
+#else
+
+ #define N BOOST_PP_ITERATION()
+
+ /// \brief A PrimitiveTransform that uses <tt>make\<\></tt> to build
+ /// a CallableTransform, and then uses <tt>call\<\></tt> to apply it.
+ ///
+ /// <tt>lazy\<\></tt> is useful as a higher-order transform, when the
+ /// transform to be applied depends on the current state of the
+ /// transformation. The invocation of the <tt>make\<\></tt> transform
+ /// evaluates any nested transforms, and the resulting type is treated
+ /// as a CallableTransform, which is evaluated with <tt>call\<\></tt>.
+ template<typename Object BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
+ struct lazy<Object(BOOST_PP_ENUM_PARAMS(N, A))>
+ : transform<lazy<Object(BOOST_PP_ENUM_PARAMS(N, A))> >
+ {
+ template<typename Expr, typename State, typename Data>
+ struct impl
+ : call<
+ typename make<Object>::template impl<Expr, State, Data>::result_type
+ (BOOST_PP_ENUM_PARAMS(N, A))
+ >::template impl<Expr, State, Data>
+ {};
+ };
+
+ #if N > 0
+ template<typename Object BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
+ struct lazy<Object(BOOST_PP_ENUM_PARAMS(N, A)...)>
+ : transform<lazy<Object(BOOST_PP_ENUM_PARAMS(N, A)...)> >
+ {
+ template<typename Expr, typename State, typename Data>
+ struct impl
+ : lazy<
+ typename detail::expand_pattern<
+ proto::arity_of<Expr>::value
+ , BOOST_PP_CAT(A, BOOST_PP_DEC(N))
+ , detail::BOOST_PP_CAT(expand_pattern_rest_, BOOST_PP_DEC(N))<
+ Object
+ BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_DEC(N), A)
+ >
+ >::type
+ >::template impl<Expr, State, Data>
+ {};
+ };
+ #endif
+
+ #undef N
+
+#endif