Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/src/boost/libs/local_function/example/gcc_lambda.hpp b/src/boost/libs/local_function/example/gcc_lambda.hpp
new file mode 100644
index 00000000..665febc8
--- /dev/null
+++ b/src/boost/libs/local_function/example/gcc_lambda.hpp
@@ -0,0 +1,129 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/local_function
+
+#ifndef GCC_LAMBDA_HPP_
+#define GCC_LAMBDA_HPP_
+
+#include <boost/local_function.hpp>
+#include <boost/local_function/detail/preprocessor/void_list.hpp>
+#include <boost/local_function/detail/preprocessor/line_counter.hpp>
+#include <boost/local_function/detail/preprocessor/keyword/return.hpp>
+#include <boost/local_function/detail/preprocessor/keyword/const_bind.hpp>
+#include <boost/local_function/detail/preprocessor/keyword/bind.hpp>
+#include <boost/preprocessor/list/for_each_i.hpp>
+#include <boost/preprocessor/list/fold_left.hpp>
+#include <boost/preprocessor/list/append.hpp>
+#include <boost/preprocessor/list/enum.hpp>
+#include <boost/preprocessor/list/adt.hpp>
+#include <boost/preprocessor/tuple/elem.hpp>
+#include <boost/preprocessor/tuple/eat.hpp>
+#include <boost/preprocessor/control/iif.hpp>
+#include <boost/preprocessor/punctuation/comma_if.hpp>
+#include <boost/preprocessor/facilities/expand.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/config.hpp>
+
+// PRIVATE //
+
+#define GCC_LAMBDA_SPLIT_BIND_(elem, binds, params, results) \
+    (BOOST_PP_LIST_APPEND(binds, (elem, BOOST_PP_NIL)), params, results)
+
+#define GCC_LAMBDA_SPLIT_PARAM_(elem, binds, params, results) \
+    (binds, BOOST_PP_LIST_APPEND(params, (elem, BOOST_PP_NIL)), results)
+
+#define GCC_LAMBDA_SPLIT_RESULT_(elem, binds, params, results) \
+    (binds, params, BOOST_PP_LIST_APPEND(results, (elem, BOOT_PP_NIL)))
+
+#define GCC_LAMBDA_SPLIT_DISPATCH_(d, binds_params_results, elem) \
+    BOOST_PP_IIF(BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_IS_RETURN_FRONT(elem), \
+        GCC_LAMBDA_SPLIT_RESULT_ \
+    , BOOST_PP_IIF(BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_IS_BIND_FRONT(elem), \
+        GCC_LAMBDA_SPLIT_BIND_ \
+    , BOOST_PP_IIF(BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_IS_CONST_BIND_FRONT( \
+            elem), \
+        GCC_LAMBDA_SPLIT_BIND_ \
+    , /* no result, no bind, and no const bind so it's param */ \
+        GCC_LAMBDA_SPLIT_PARAM_ \
+    )))(elem, BOOST_PP_TUPLE_ELEM(3, 0, binds_params_results), \
+            BOOST_PP_TUPLE_ELEM(3, 1, binds_params_results), \
+            BOOST_PP_TUPLE_ELEM(3, 2, binds_params_results))
+
+#define GCC_LAMBDA_SPLIT_(list) \
+    BOOST_PP_LIST_FOLD_LEFT(GCC_LAMBDA_SPLIT_DISPATCH_, \
+            (BOOST_PP_NIL, BOOST_PP_NIL, BOOST_PP_NIL), list)
+
+#define GCC_LAMBDA_REMOVE_CONST_BIND_(r, unused, i, elem) \
+    BOOST_PP_COMMA_IF(i) \
+    BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_CONST_BIND_REMOVE_FRONT(elem)
+
+#define GCC_LAMBDA_RESULT_TYPE_(results) \
+    BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_RETURN_REMOVE_FRONT( \
+            BOOST_PP_LIST_FIRST(results))
+
+#ifdef BOOST_NO_CXX11_LAMBDAS
+//[gcc_lambda_macro
+#   define GCC_LAMBDA_(binds, params, results) \
+        ({ /* open statement expression (GCC extension only) */ \
+        BOOST_LOCAL_FUNCTION( \
+            BOOST_PP_LIST_ENUM(BOOST_PP_LIST_APPEND(binds, \
+                BOOST_PP_LIST_APPEND(params, \
+                    BOOST_PP_IIF(BOOST_PP_LIST_IS_NIL(results), \
+                        (return void, BOOST_PP_NIL) /* default for lambdas */ \
+                    , \
+                        results \
+                    )\
+                ) \
+            )) \
+        )
+//]
+#else
+#   define GCC_LAMBDA_(binds, params, results) \
+        /* ignore const binding because not supported by C++11 lambdas */ \
+        [ BOOST_PP_LIST_FOR_EACH_I(GCC_LAMBDA_REMOVE_CONST_BIND_, ~, binds) ] \
+        ( BOOST_PP_LIST_ENUM(params) ) \
+        BOOST_PP_IIF(BOOST_PP_LIST_IS_NIL(results), \
+            BOOST_PP_TUPLE_EAT(1) /* void result type (default) */ \
+        , \
+            -> GCC_LAMBDA_RESULT_TYPE_ \
+        )(results)
+#endif
+
+#define GCC_LAMBDA_TUPLE_(binds_params_results) \
+    GCC_LAMBDA_(BOOST_PP_TUPLE_ELEM(3, 0, binds_params_results), \
+            BOOST_PP_TUPLE_ELEM(3, 1, binds_params_results), \
+            BOOST_PP_TUPLE_ELEM(3, 2, binds_params_results))
+
+//[gcc_lambda_end_macro
+#define GCC_LAMBDA_END_(id) \
+    BOOST_LOCAL_FUNCTION_NAME(BOOST_PP_CAT(gcc_lambda_, id)) \
+    BOOST_PP_CAT(gcc_lambda_, id); \
+    }) /* close statement expression (GCC extension only) */
+//]
+
+// PUBLIC //
+
+// Same arguments as for local functions but respect to C++11 lambdas:
+// const bind v is =v, bind& v is &v, void if no return specified, no = or &.
+#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
+#   define GCC_LAMBDA(void_or_seq) \
+        GCC_LAMBDA_TUPLE_(GCC_LAMBDA_SPLIT_( \
+                BOOST_LOCAL_FUNCTION_DETAIL_PP_VOID_LIST(void_or_seq)))
+#else
+#   define GCC_LAMBDA(...) \
+        GCC_LAMBDA_TUPLE_(GCC_LAMBDA_SPLIT_( \
+                BOOST_LOCAL_FUNCTION_DETAIL_PP_VOID_LIST(__VA_ARGS__)))
+#endif
+
+#ifdef BOOST_NO_CXX11_LAMBDAS
+#   define GCC_LAMBDA_END \
+        GCC_LAMBDA_END_(BOOST_LOCAL_FUNCTION_DETAIL_PP_LINE_COUNTER)
+#else
+#   define GCC_LAMBDA_END /* nothing */
+#endif
+
+#endif // #include guard
+