In common.h, define func_lib for function objects. In configure.ac, define HAVE_STD_FUNCTION and HAVE_BOOST_FUNCTION. Include function headers in ndnboost.
diff --git a/ndnboost/function/detail/function_iterate.hpp b/ndnboost/function/detail/function_iterate.hpp
new file mode 100644
index 0000000..5c41196
--- /dev/null
+++ b/ndnboost/function/detail/function_iterate.hpp
@@ -0,0 +1,16 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+#if !defined(BOOST_PP_IS_ITERATING)
+# error Boost.Function - do not include this file!
+#endif
+
+#define BOOST_FUNCTION_NUM_ARGS BOOST_PP_ITERATION()
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
+
diff --git a/ndnboost/function/detail/gen_maybe_include.pl b/ndnboost/function/detail/gen_maybe_include.pl
new file mode 100644
index 0000000..ab4367d
--- /dev/null
+++ b/ndnboost/function/detail/gen_maybe_include.pl
@@ -0,0 +1,37 @@
+#!/usr/bin/perl -w
+#
+# Boost.Function library
+#
+# Copyright (C) 2001-2003 Douglas Gregor (gregod@cs.rpi.edu)
+#
+# Permission to copy, use, sell and distribute this software is granted
+# provided this copyright notice appears in all copies.
+# Permission to modify the code and to distribute modified code is granted
+# provided this copyright notice appears in all copies, and a notice
+# that the code was modified is included with the copyright notice.
+#
+# This software is provided "as is" without express or implied warranty,
+# and with no claim as to its suitability for any purpose.
+#
+# For more information, see http://www.boost.org
+use English;
+
+$max_args = $ARGV[0];
+
+open (OUT, ">maybe_include.hpp") or die("Cannot write to maybe_include.hpp");
+for($on_arg = 0; $on_arg <= $max_args; ++$on_arg) {
+ if ($on_arg == 0) {
+ print OUT "#if";
+ }
+ else {
+ print OUT "#elif";
+ }
+ print OUT " BOOST_FUNCTION_NUM_ARGS == $on_arg\n";
+ print OUT "# ifndef BOOST_FUNCTION_$on_arg\n";
+ print OUT "# define BOOST_FUNCTION_$on_arg\n";
+ print OUT "# include <ndnboost/function/function_template.hpp>\n";
+ print OUT "# endif\n";
+}
+print OUT "#else\n";
+print OUT "# error Cannot handle Boost.Function objects that accept more than $max_args arguments!\n";
+print OUT "#endif\n";
diff --git a/ndnboost/function/detail/maybe_include.hpp b/ndnboost/function/detail/maybe_include.hpp
new file mode 100644
index 0000000..a2f003e
--- /dev/null
+++ b/ndnboost/function/detail/maybe_include.hpp
@@ -0,0 +1,267 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#if BOOST_FUNCTION_NUM_ARGS == 0
+# ifndef BOOST_FUNCTION_0
+# define BOOST_FUNCTION_0
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 1
+# ifndef BOOST_FUNCTION_1
+# define BOOST_FUNCTION_1
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 2
+# ifndef BOOST_FUNCTION_2
+# define BOOST_FUNCTION_2
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 3
+# ifndef BOOST_FUNCTION_3
+# define BOOST_FUNCTION_3
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 4
+# ifndef BOOST_FUNCTION_4
+# define BOOST_FUNCTION_4
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 5
+# ifndef BOOST_FUNCTION_5
+# define BOOST_FUNCTION_5
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 6
+# ifndef BOOST_FUNCTION_6
+# define BOOST_FUNCTION_6
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 7
+# ifndef BOOST_FUNCTION_7
+# define BOOST_FUNCTION_7
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 8
+# ifndef BOOST_FUNCTION_8
+# define BOOST_FUNCTION_8
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 9
+# ifndef BOOST_FUNCTION_9
+# define BOOST_FUNCTION_9
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 10
+# ifndef BOOST_FUNCTION_10
+# define BOOST_FUNCTION_10
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 11
+# ifndef BOOST_FUNCTION_11
+# define BOOST_FUNCTION_11
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 12
+# ifndef BOOST_FUNCTION_12
+# define BOOST_FUNCTION_12
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 13
+# ifndef BOOST_FUNCTION_13
+# define BOOST_FUNCTION_13
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 14
+# ifndef BOOST_FUNCTION_14
+# define BOOST_FUNCTION_14
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 15
+# ifndef BOOST_FUNCTION_15
+# define BOOST_FUNCTION_15
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 16
+# ifndef BOOST_FUNCTION_16
+# define BOOST_FUNCTION_16
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 17
+# ifndef BOOST_FUNCTION_17
+# define BOOST_FUNCTION_17
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 18
+# ifndef BOOST_FUNCTION_18
+# define BOOST_FUNCTION_18
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 19
+# ifndef BOOST_FUNCTION_19
+# define BOOST_FUNCTION_19
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 20
+# ifndef BOOST_FUNCTION_20
+# define BOOST_FUNCTION_20
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 21
+# ifndef BOOST_FUNCTION_21
+# define BOOST_FUNCTION_21
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 22
+# ifndef BOOST_FUNCTION_22
+# define BOOST_FUNCTION_22
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 23
+# ifndef BOOST_FUNCTION_23
+# define BOOST_FUNCTION_23
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 24
+# ifndef BOOST_FUNCTION_24
+# define BOOST_FUNCTION_24
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 25
+# ifndef BOOST_FUNCTION_25
+# define BOOST_FUNCTION_25
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 26
+# ifndef BOOST_FUNCTION_26
+# define BOOST_FUNCTION_26
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 27
+# ifndef BOOST_FUNCTION_27
+# define BOOST_FUNCTION_27
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 28
+# ifndef BOOST_FUNCTION_28
+# define BOOST_FUNCTION_28
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 29
+# ifndef BOOST_FUNCTION_29
+# define BOOST_FUNCTION_29
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 30
+# ifndef BOOST_FUNCTION_30
+# define BOOST_FUNCTION_30
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 31
+# ifndef BOOST_FUNCTION_31
+# define BOOST_FUNCTION_31
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 32
+# ifndef BOOST_FUNCTION_32
+# define BOOST_FUNCTION_32
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 33
+# ifndef BOOST_FUNCTION_33
+# define BOOST_FUNCTION_33
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 34
+# ifndef BOOST_FUNCTION_34
+# define BOOST_FUNCTION_34
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 35
+# ifndef BOOST_FUNCTION_35
+# define BOOST_FUNCTION_35
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 36
+# ifndef BOOST_FUNCTION_36
+# define BOOST_FUNCTION_36
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 37
+# ifndef BOOST_FUNCTION_37
+# define BOOST_FUNCTION_37
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 38
+# ifndef BOOST_FUNCTION_38
+# define BOOST_FUNCTION_38
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 39
+# ifndef BOOST_FUNCTION_39
+# define BOOST_FUNCTION_39
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 40
+# ifndef BOOST_FUNCTION_40
+# define BOOST_FUNCTION_40
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 41
+# ifndef BOOST_FUNCTION_41
+# define BOOST_FUNCTION_41
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 42
+# ifndef BOOST_FUNCTION_42
+# define BOOST_FUNCTION_42
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 43
+# ifndef BOOST_FUNCTION_43
+# define BOOST_FUNCTION_43
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 44
+# ifndef BOOST_FUNCTION_44
+# define BOOST_FUNCTION_44
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 45
+# ifndef BOOST_FUNCTION_45
+# define BOOST_FUNCTION_45
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 46
+# ifndef BOOST_FUNCTION_46
+# define BOOST_FUNCTION_46
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 47
+# ifndef BOOST_FUNCTION_47
+# define BOOST_FUNCTION_47
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 48
+# ifndef BOOST_FUNCTION_48
+# define BOOST_FUNCTION_48
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 49
+# ifndef BOOST_FUNCTION_49
+# define BOOST_FUNCTION_49
+# include <ndnboost/function/function_template.hpp>
+# endif
+#elif BOOST_FUNCTION_NUM_ARGS == 50
+# ifndef BOOST_FUNCTION_50
+# define BOOST_FUNCTION_50
+# include <ndnboost/function/function_template.hpp>
+# endif
+#else
+# error Cannot handle Boost.Function objects that accept more than 50 arguments!
+#endif
diff --git a/ndnboost/function/detail/prologue.hpp b/ndnboost/function/detail/prologue.hpp
new file mode 100644
index 0000000..458324c
--- /dev/null
+++ b/ndnboost/function/detail/prologue.hpp
@@ -0,0 +1,26 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#ifndef BOOST_FUNCTION_PROLOGUE_HPP
+#define BOOST_FUNCTION_PROLOGUE_HPP
+# include <cassert>
+# include <algorithm>
+# include <ndnboost/config/no_tr1/functional.hpp> // unary_function, binary_function
+# include <ndnboost/throw_exception.hpp>
+# include <ndnboost/config.hpp>
+# include <ndnboost/function/function_base.hpp>
+# include <ndnboost/mem_fn.hpp>
+# include <ndnboost/type_traits/is_integral.hpp>
+# include <ndnboost/preprocessor/enum.hpp>
+# include <ndnboost/preprocessor/enum_params.hpp>
+# include <ndnboost/preprocessor/cat.hpp>
+# include <ndnboost/preprocessor/repeat.hpp>
+# include <ndnboost/preprocessor/inc.hpp>
+# include <ndnboost/type_traits/is_void.hpp>
+#endif // BOOST_FUNCTION_PROLOGUE_HPP
diff --git a/ndnboost/function/function0.hpp b/ndnboost/function/function0.hpp
new file mode 100644
index 0000000..79211dc
--- /dev/null
+++ b/ndnboost/function/function0.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 0
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function1.hpp b/ndnboost/function/function1.hpp
new file mode 100644
index 0000000..83fbc19
--- /dev/null
+++ b/ndnboost/function/function1.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 1
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function10.hpp b/ndnboost/function/function10.hpp
new file mode 100644
index 0000000..bbd3dec
--- /dev/null
+++ b/ndnboost/function/function10.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 10
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function2.hpp b/ndnboost/function/function2.hpp
new file mode 100644
index 0000000..65dbfda
--- /dev/null
+++ b/ndnboost/function/function2.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 2
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function3.hpp b/ndnboost/function/function3.hpp
new file mode 100644
index 0000000..3244755
--- /dev/null
+++ b/ndnboost/function/function3.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 3
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function4.hpp b/ndnboost/function/function4.hpp
new file mode 100644
index 0000000..467b03b
--- /dev/null
+++ b/ndnboost/function/function4.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 4
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function5.hpp b/ndnboost/function/function5.hpp
new file mode 100644
index 0000000..77cf420
--- /dev/null
+++ b/ndnboost/function/function5.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 5
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function6.hpp b/ndnboost/function/function6.hpp
new file mode 100644
index 0000000..eae829d
--- /dev/null
+++ b/ndnboost/function/function6.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 6
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function7.hpp b/ndnboost/function/function7.hpp
new file mode 100644
index 0000000..0c7a5aa
--- /dev/null
+++ b/ndnboost/function/function7.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 7
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function8.hpp b/ndnboost/function/function8.hpp
new file mode 100644
index 0000000..c9cc28b
--- /dev/null
+++ b/ndnboost/function/function8.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 8
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function9.hpp b/ndnboost/function/function9.hpp
new file mode 100644
index 0000000..33c8836
--- /dev/null
+++ b/ndnboost/function/function9.hpp
@@ -0,0 +1,12 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2002-2003. Use, modification and
+// distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#define BOOST_FUNCTION_NUM_ARGS 9
+#include <ndnboost/function/detail/maybe_include.hpp>
+#undef BOOST_FUNCTION_NUM_ARGS
diff --git a/ndnboost/function/function_base.hpp b/ndnboost/function/function_base.hpp
new file mode 100644
index 0000000..30af1a3
--- /dev/null
+++ b/ndnboost/function/function_base.hpp
@@ -0,0 +1,910 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2001-2006
+// Copyright Emil Dotchevski 2007
+// Use, modification and distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+#ifndef BOOST_FUNCTION_BASE_HEADER
+#define BOOST_FUNCTION_BASE_HEADER
+
+#include <stdexcept>
+#include <string>
+#include <memory>
+#include <new>
+#include <ndnboost/config.hpp>
+#include <ndnboost/detail/sp_typeinfo.hpp>
+#include <ndnboost/assert.hpp>
+#include <ndnboost/integer.hpp>
+#include <ndnboost/type_traits/has_trivial_copy.hpp>
+#include <ndnboost/type_traits/has_trivial_destructor.hpp>
+#include <ndnboost/type_traits/is_const.hpp>
+#include <ndnboost/type_traits/is_integral.hpp>
+#include <ndnboost/type_traits/is_volatile.hpp>
+#include <ndnboost/type_traits/composite_traits.hpp>
+#include <ndnboost/type_traits/ice.hpp>
+#include <ndnboost/ref.hpp>
+#include <ndnboost/mpl/if.hpp>
+#include <ndnboost/detail/workaround.hpp>
+#include <ndnboost/type_traits/alignment_of.hpp>
+#ifndef BOOST_NO_SFINAE
+# include "ndnboost/utility/enable_if.hpp"
+#else
+# include "ndnboost/mpl/bool.hpp"
+#endif
+#include <ndnboost/function_equal.hpp>
+#include <ndnboost/function/function_fwd.hpp>
+
+#if defined(BOOST_MSVC)
+# pragma warning( push )
+# pragma warning( disable : 4793 ) // complaint about native code generation
+# pragma warning( disable : 4127 ) // "conditional expression is constant"
+#endif
+
+// Define BOOST_FUNCTION_STD_NS to the namespace that contains type_info.
+#ifdef BOOST_NO_STD_TYPEINFO
+// Embedded VC++ does not have type_info in namespace std
+# define BOOST_FUNCTION_STD_NS
+#else
+# define BOOST_FUNCTION_STD_NS std
+#endif
+
+// Borrowed from Boost.Python library: determines the cases where we
+// need to use std::type_info::name to compare instead of operator==.
+#if defined( BOOST_NO_TYPEID )
+# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) ((X)==(Y))
+#elif (defined(__GNUC__) && __GNUC__ >= 3) \
+ || defined(_AIX) \
+ || ( defined(__sgi) && defined(__host_mips))
+# include <cstring>
+# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) \
+ (std::strcmp((X).name(),(Y).name()) == 0)
+# else
+# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) ((X)==(Y))
+#endif
+
+#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 || defined(__ICL) && __ICL <= 600 || defined(__MWERKS__) && __MWERKS__ < 0x2406 && !defined(BOOST_STRICT_CONFIG)
+# define BOOST_FUNCTION_TARGET_FIX(x) x
+#else
+# define BOOST_FUNCTION_TARGET_FIX(x)
+#endif // not MSVC
+
+#if !BOOST_WORKAROUND(__BORLANDC__, < 0x5A0)
+# define BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor,Type) \
+ typename ::ndnboost::enable_if_c<(::ndnboost::type_traits::ice_not< \
+ (::ndnboost::is_integral<Functor>::value)>::value), \
+ Type>::type
+#else
+// BCC doesn't recognize this depends on a template argument and complains
+// about the use of 'typename'
+# define BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor,Type) \
+ ::ndnboost::enable_if_c<(::ndnboost::type_traits::ice_not< \
+ (::ndnboost::is_integral<Functor>::value)>::value), \
+ Type>::type
+#endif
+
+namespace ndnboost {
+ namespace detail {
+ namespace function {
+ class X;
+
+ /**
+ * A buffer used to store small function objects in
+ * ndnboost::function. It is a union containing function pointers,
+ * object pointers, and a structure that resembles a bound
+ * member function pointer.
+ */
+ union function_buffer
+ {
+ // For pointers to function objects
+ mutable void* obj_ptr;
+
+ // For pointers to std::type_info objects
+ struct type_t {
+ // (get_functor_type_tag, check_functor_type_tag).
+ const detail::sp_typeinfo* type;
+
+ // Whether the type is const-qualified.
+ bool const_qualified;
+ // Whether the type is volatile-qualified.
+ bool volatile_qualified;
+ } type;
+
+ // For function pointers of all kinds
+ mutable void (*func_ptr)();
+
+ // For bound member pointers
+ struct bound_memfunc_ptr_t {
+ void (X::*memfunc_ptr)(int);
+ void* obj_ptr;
+ } bound_memfunc_ptr;
+
+ // For references to function objects. We explicitly keep
+ // track of the cv-qualifiers on the object referenced.
+ struct obj_ref_t {
+ mutable void* obj_ptr;
+ bool is_const_qualified;
+ bool is_volatile_qualified;
+ } obj_ref;
+
+ // To relax aliasing constraints
+ mutable char data;
+ };
+
+ /**
+ * The unusable class is a placeholder for unused function arguments
+ * It is also completely unusable except that it constructable from
+ * anything. This helps compilers without partial specialization to
+ * handle Boost.Function objects returning void.
+ */
+ struct unusable
+ {
+ unusable() {}
+ template<typename T> unusable(const T&) {}
+ };
+
+ /* Determine the return type. This supports compilers that do not support
+ * void returns or partial specialization by silently changing the return
+ * type to "unusable".
+ */
+ template<typename T> struct function_return_type { typedef T type; };
+
+ template<>
+ struct function_return_type<void>
+ {
+ typedef unusable type;
+ };
+
+ // The operation type to perform on the given functor/function pointer
+ enum functor_manager_operation_type {
+ clone_functor_tag,
+ move_functor_tag,
+ destroy_functor_tag,
+ check_functor_type_tag,
+ get_functor_type_tag
+ };
+
+ // Tags used to decide between different types of functions
+ struct function_ptr_tag {};
+ struct function_obj_tag {};
+ struct member_ptr_tag {};
+ struct function_obj_ref_tag {};
+
+ template<typename F>
+ class get_function_tag
+ {
+ typedef typename mpl::if_c<(is_pointer<F>::value),
+ function_ptr_tag,
+ function_obj_tag>::type ptr_or_obj_tag;
+
+ typedef typename mpl::if_c<(is_member_pointer<F>::value),
+ member_ptr_tag,
+ ptr_or_obj_tag>::type ptr_or_obj_or_mem_tag;
+
+ typedef typename mpl::if_c<(is_reference_wrapper<F>::value),
+ function_obj_ref_tag,
+ ptr_or_obj_or_mem_tag>::type or_ref_tag;
+
+ public:
+ typedef or_ref_tag type;
+ };
+
+ // The trivial manager does nothing but return the same pointer (if we
+ // are cloning) or return the null pointer (if we are deleting).
+ template<typename F>
+ struct reference_manager
+ {
+ static inline void
+ manage(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op)
+ {
+ switch (op) {
+ case clone_functor_tag:
+ out_buffer.obj_ref = in_buffer.obj_ref;
+ return;
+
+ case move_functor_tag:
+ out_buffer.obj_ref = in_buffer.obj_ref;
+ in_buffer.obj_ref.obj_ptr = 0;
+ return;
+
+ case destroy_functor_tag:
+ out_buffer.obj_ref.obj_ptr = 0;
+ return;
+
+ case check_functor_type_tag:
+ {
+ const detail::sp_typeinfo& check_type
+ = *out_buffer.type.type;
+
+ // Check whether we have the same type. We can add
+ // cv-qualifiers, but we can't take them away.
+ if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(F))
+ && (!in_buffer.obj_ref.is_const_qualified
+ || out_buffer.type.const_qualified)
+ && (!in_buffer.obj_ref.is_volatile_qualified
+ || out_buffer.type.volatile_qualified))
+ out_buffer.obj_ptr = in_buffer.obj_ref.obj_ptr;
+ else
+ out_buffer.obj_ptr = 0;
+ }
+ return;
+
+ case get_functor_type_tag:
+ out_buffer.type.type = &BOOST_SP_TYPEID(F);
+ out_buffer.type.const_qualified = in_buffer.obj_ref.is_const_qualified;
+ out_buffer.type.volatile_qualified = in_buffer.obj_ref.is_volatile_qualified;
+ return;
+ }
+ }
+ };
+
+ /**
+ * Determine if ndnboost::function can use the small-object
+ * optimization with the function object type F.
+ */
+ template<typename F>
+ struct function_allows_small_object_optimization
+ {
+ BOOST_STATIC_CONSTANT
+ (bool,
+ value = ((sizeof(F) <= sizeof(function_buffer) &&
+ (alignment_of<function_buffer>::value
+ % alignment_of<F>::value == 0))));
+ };
+
+ template <typename F,typename A>
+ struct functor_wrapper: public F, public A
+ {
+ functor_wrapper( F f, A a ):
+ F(f),
+ A(a)
+ {
+ }
+
+ functor_wrapper(const functor_wrapper& f) :
+ F(static_cast<const F&>(f)),
+ A(static_cast<const A&>(f))
+ {
+ }
+ };
+
+ /**
+ * The functor_manager class contains a static function "manage" which
+ * can clone or destroy the given function/function object pointer.
+ */
+ template<typename Functor>
+ struct functor_manager_common
+ {
+ typedef Functor functor_type;
+
+ // Function pointers
+ static inline void
+ manage_ptr(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op)
+ {
+ if (op == clone_functor_tag)
+ out_buffer.func_ptr = in_buffer.func_ptr;
+ else if (op == move_functor_tag) {
+ out_buffer.func_ptr = in_buffer.func_ptr;
+ in_buffer.func_ptr = 0;
+ } else if (op == destroy_functor_tag)
+ out_buffer.func_ptr = 0;
+ else if (op == check_functor_type_tag) {
+ const detail::sp_typeinfo& check_type
+ = *out_buffer.type.type;
+ if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
+ out_buffer.obj_ptr = &in_buffer.func_ptr;
+ else
+ out_buffer.obj_ptr = 0;
+ } else /* op == get_functor_type_tag */ {
+ out_buffer.type.type = &BOOST_SP_TYPEID(Functor);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ }
+ }
+
+ // Function objects that fit in the small-object buffer.
+ static inline void
+ manage_small(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op)
+ {
+ if (op == clone_functor_tag || op == move_functor_tag) {
+ const functor_type* in_functor =
+ reinterpret_cast<const functor_type*>(&in_buffer.data);
+ new (reinterpret_cast<void*>(&out_buffer.data)) functor_type(*in_functor);
+
+ if (op == move_functor_tag) {
+ functor_type* f = reinterpret_cast<functor_type*>(&in_buffer.data);
+ (void)f; // suppress warning about the value of f not being used (MSVC)
+ f->~Functor();
+ }
+ } else if (op == destroy_functor_tag) {
+ // Some compilers (Borland, vc6, ...) are unhappy with ~functor_type.
+ functor_type* f = reinterpret_cast<functor_type*>(&out_buffer.data);
+ (void)f; // suppress warning about the value of f not being used (MSVC)
+ f->~Functor();
+ } else if (op == check_functor_type_tag) {
+ const detail::sp_typeinfo& check_type
+ = *out_buffer.type.type;
+ if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
+ out_buffer.obj_ptr = &in_buffer.data;
+ else
+ out_buffer.obj_ptr = 0;
+ } else /* op == get_functor_type_tag */ {
+ out_buffer.type.type = &BOOST_SP_TYPEID(Functor);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ }
+ }
+ };
+
+ template<typename Functor>
+ struct functor_manager
+ {
+ private:
+ typedef Functor functor_type;
+
+ // Function pointers
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, function_ptr_tag)
+ {
+ functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op);
+ }
+
+ // Function objects that fit in the small-object buffer.
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, mpl::true_)
+ {
+ functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op);
+ }
+
+ // Function objects that require heap allocation
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, mpl::false_)
+ {
+ if (op == clone_functor_tag) {
+ // Clone the functor
+ // GCC 2.95.3 gets the CV qualifiers wrong here, so we
+ // can't do the static_cast that we should do.
+ // jewillco: Changing this to static_cast because GCC 2.95.3 is
+ // obsolete.
+ const functor_type* f =
+ static_cast<const functor_type*>(in_buffer.obj_ptr);
+ functor_type* new_f = new functor_type(*f);
+ out_buffer.obj_ptr = new_f;
+ } else if (op == move_functor_tag) {
+ out_buffer.obj_ptr = in_buffer.obj_ptr;
+ in_buffer.obj_ptr = 0;
+ } else if (op == destroy_functor_tag) {
+ /* Cast from the void pointer to the functor pointer type */
+ functor_type* f =
+ static_cast<functor_type*>(out_buffer.obj_ptr);
+ delete f;
+ out_buffer.obj_ptr = 0;
+ } else if (op == check_functor_type_tag) {
+ const detail::sp_typeinfo& check_type
+ = *out_buffer.type.type;
+ if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
+ out_buffer.obj_ptr = in_buffer.obj_ptr;
+ else
+ out_buffer.obj_ptr = 0;
+ } else /* op == get_functor_type_tag */ {
+ out_buffer.type.type = &BOOST_SP_TYPEID(Functor);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ }
+ }
+
+ // For function objects, we determine whether the function
+ // object can use the small-object optimization buffer or
+ // whether we need to allocate it on the heap.
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, function_obj_tag)
+ {
+ manager(in_buffer, out_buffer, op,
+ mpl::bool_<(function_allows_small_object_optimization<functor_type>::value)>());
+ }
+
+ // For member pointers, we use the small-object optimization buffer.
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, member_ptr_tag)
+ {
+ manager(in_buffer, out_buffer, op, mpl::true_());
+ }
+
+ public:
+ /* Dispatch to an appropriate manager based on whether we have a
+ function pointer or a function object pointer. */
+ static inline void
+ manage(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op)
+ {
+ typedef typename get_function_tag<functor_type>::type tag_type;
+ switch (op) {
+ case get_functor_type_tag:
+ out_buffer.type.type = &BOOST_SP_TYPEID(functor_type);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ return;
+
+ default:
+ manager(in_buffer, out_buffer, op, tag_type());
+ return;
+ }
+ }
+ };
+
+ template<typename Functor, typename Allocator>
+ struct functor_manager_a
+ {
+ private:
+ typedef Functor functor_type;
+
+ // Function pointers
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, function_ptr_tag)
+ {
+ functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op);
+ }
+
+ // Function objects that fit in the small-object buffer.
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, mpl::true_)
+ {
+ functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op);
+ }
+
+ // Function objects that require heap allocation
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, mpl::false_)
+ {
+ typedef functor_wrapper<Functor,Allocator> functor_wrapper_type;
+ typedef typename Allocator::template rebind<functor_wrapper_type>::other
+ wrapper_allocator_type;
+ typedef typename wrapper_allocator_type::pointer wrapper_allocator_pointer_type;
+
+ if (op == clone_functor_tag) {
+ // Clone the functor
+ // GCC 2.95.3 gets the CV qualifiers wrong here, so we
+ // can't do the static_cast that we should do.
+ const functor_wrapper_type* f =
+ static_cast<const functor_wrapper_type*>(in_buffer.obj_ptr);
+ wrapper_allocator_type wrapper_allocator(static_cast<Allocator const &>(*f));
+ wrapper_allocator_pointer_type copy = wrapper_allocator.allocate(1);
+ wrapper_allocator.construct(copy, *f);
+
+ // Get back to the original pointer type
+ functor_wrapper_type* new_f = static_cast<functor_wrapper_type*>(copy);
+ out_buffer.obj_ptr = new_f;
+ } else if (op == move_functor_tag) {
+ out_buffer.obj_ptr = in_buffer.obj_ptr;
+ in_buffer.obj_ptr = 0;
+ } else if (op == destroy_functor_tag) {
+ /* Cast from the void pointer to the functor_wrapper_type */
+ functor_wrapper_type* victim =
+ static_cast<functor_wrapper_type*>(in_buffer.obj_ptr);
+ wrapper_allocator_type wrapper_allocator(static_cast<Allocator const &>(*victim));
+ wrapper_allocator.destroy(victim);
+ wrapper_allocator.deallocate(victim,1);
+ out_buffer.obj_ptr = 0;
+ } else if (op == check_functor_type_tag) {
+ const detail::sp_typeinfo& check_type
+ = *out_buffer.type.type;
+ if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
+ out_buffer.obj_ptr = in_buffer.obj_ptr;
+ else
+ out_buffer.obj_ptr = 0;
+ } else /* op == get_functor_type_tag */ {
+ out_buffer.type.type = &BOOST_SP_TYPEID(Functor);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ }
+ }
+
+ // For function objects, we determine whether the function
+ // object can use the small-object optimization buffer or
+ // whether we need to allocate it on the heap.
+ static inline void
+ manager(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op, function_obj_tag)
+ {
+ manager(in_buffer, out_buffer, op,
+ mpl::bool_<(function_allows_small_object_optimization<functor_type>::value)>());
+ }
+
+ public:
+ /* Dispatch to an appropriate manager based on whether we have a
+ function pointer or a function object pointer. */
+ static inline void
+ manage(const function_buffer& in_buffer, function_buffer& out_buffer,
+ functor_manager_operation_type op)
+ {
+ typedef typename get_function_tag<functor_type>::type tag_type;
+ switch (op) {
+ case get_functor_type_tag:
+ out_buffer.type.type = &BOOST_SP_TYPEID(functor_type);
+ out_buffer.type.const_qualified = false;
+ out_buffer.type.volatile_qualified = false;
+ return;
+
+ default:
+ manager(in_buffer, out_buffer, op, tag_type());
+ return;
+ }
+ }
+ };
+
+ // A type that is only used for comparisons against zero
+ struct useless_clear_type {};
+
+#ifdef BOOST_NO_SFINAE
+ // These routines perform comparisons between a Boost.Function
+ // object and an arbitrary function object (when the last
+ // parameter is mpl::bool_<false>) or against zero (when the
+ // last parameter is mpl::bool_<true>). They are only necessary
+ // for compilers that don't support SFINAE.
+ template<typename Function, typename Functor>
+ bool
+ compare_equal(const Function& f, const Functor&, int, mpl::bool_<true>)
+ { return f.empty(); }
+
+ template<typename Function, typename Functor>
+ bool
+ compare_not_equal(const Function& f, const Functor&, int,
+ mpl::bool_<true>)
+ { return !f.empty(); }
+
+ template<typename Function, typename Functor>
+ bool
+ compare_equal(const Function& f, const Functor& g, long,
+ mpl::bool_<false>)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return function_equal(*fp, g);
+ else return false;
+ }
+
+ template<typename Function, typename Functor>
+ bool
+ compare_equal(const Function& f, const reference_wrapper<Functor>& g,
+ int, mpl::bool_<false>)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return fp == g.get_pointer();
+ else return false;
+ }
+
+ template<typename Function, typename Functor>
+ bool
+ compare_not_equal(const Function& f, const Functor& g, long,
+ mpl::bool_<false>)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return !function_equal(*fp, g);
+ else return true;
+ }
+
+ template<typename Function, typename Functor>
+ bool
+ compare_not_equal(const Function& f,
+ const reference_wrapper<Functor>& g, int,
+ mpl::bool_<false>)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return fp != g.get_pointer();
+ else return true;
+ }
+#endif // BOOST_NO_SFINAE
+
+ /**
+ * Stores the "manager" portion of the vtable for a
+ * ndnboost::function object.
+ */
+ struct vtable_base
+ {
+ void (*manager)(const function_buffer& in_buffer,
+ function_buffer& out_buffer,
+ functor_manager_operation_type op);
+ };
+ } // end namespace function
+ } // end namespace detail
+
+/**
+ * The function_base class contains the basic elements needed for the
+ * function1, function2, function3, etc. classes. It is common to all
+ * functions (and as such can be used to tell if we have one of the
+ * functionN objects).
+ */
+class function_base
+{
+public:
+ function_base() : vtable(0) { }
+
+ /** Determine if the function is empty (i.e., has no target). */
+ bool empty() const { return !vtable; }
+
+ /** Retrieve the type of the stored function object, or BOOST_SP_TYPEID(void)
+ if this is empty. */
+ const detail::sp_typeinfo& target_type() const
+ {
+ if (!vtable) return BOOST_SP_TYPEID(void);
+
+ detail::function::function_buffer type;
+ get_vtable()->manager(functor, type, detail::function::get_functor_type_tag);
+ return *type.type.type;
+ }
+
+ template<typename Functor>
+ Functor* target()
+ {
+ if (!vtable) return 0;
+
+ detail::function::function_buffer type_result;
+ type_result.type.type = &BOOST_SP_TYPEID(Functor);
+ type_result.type.const_qualified = is_const<Functor>::value;
+ type_result.type.volatile_qualified = is_volatile<Functor>::value;
+ get_vtable()->manager(functor, type_result,
+ detail::function::check_functor_type_tag);
+ return static_cast<Functor*>(type_result.obj_ptr);
+ }
+
+ template<typename Functor>
+#if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ const Functor* target( Functor * = 0 ) const
+#else
+ const Functor* target() const
+#endif
+ {
+ if (!vtable) return 0;
+
+ detail::function::function_buffer type_result;
+ type_result.type.type = &BOOST_SP_TYPEID(Functor);
+ type_result.type.const_qualified = true;
+ type_result.type.volatile_qualified = is_volatile<Functor>::value;
+ get_vtable()->manager(functor, type_result,
+ detail::function::check_functor_type_tag);
+ // GCC 2.95.3 gets the CV qualifiers wrong here, so we
+ // can't do the static_cast that we should do.
+ return static_cast<const Functor*>(type_result.obj_ptr);
+ }
+
+ template<typename F>
+ bool contains(const F& f) const
+ {
+#if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+ if (const F* fp = this->target( (F*)0 ))
+#else
+ if (const F* fp = this->template target<F>())
+#endif
+ {
+ return function_equal(*fp, f);
+ } else {
+ return false;
+ }
+ }
+
+#if defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3
+ // GCC 3.3 and newer cannot copy with the global operator==, due to
+ // problems with instantiation of function return types before it
+ // has been verified that the argument types match up.
+ template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator==(Functor g) const
+ {
+ if (const Functor* fp = target<Functor>())
+ return function_equal(*fp, g);
+ else return false;
+ }
+
+ template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator!=(Functor g) const
+ {
+ if (const Functor* fp = target<Functor>())
+ return !function_equal(*fp, g);
+ else return true;
+ }
+#endif
+
+public: // should be protected, but GCC 2.95.3 will fail to allow access
+ detail::function::vtable_base* get_vtable() const {
+ return reinterpret_cast<detail::function::vtable_base*>(
+ reinterpret_cast<std::size_t>(vtable) & ~static_cast<std::size_t>(0x01));
+ }
+
+ bool has_trivial_copy_and_destroy() const {
+ return reinterpret_cast<std::size_t>(vtable) & 0x01;
+ }
+
+ detail::function::vtable_base* vtable;
+ mutable detail::function::function_buffer functor;
+};
+
+/**
+ * The bad_function_call exception class is thrown when a ndnboost::function
+ * object is invoked
+ */
+class bad_function_call : public std::runtime_error
+{
+public:
+ bad_function_call() : std::runtime_error("call to empty ndnboost::function") {}
+};
+
+#ifndef BOOST_NO_SFINAE
+inline bool operator==(const function_base& f,
+ detail::function::useless_clear_type*)
+{
+ return f.empty();
+}
+
+inline bool operator!=(const function_base& f,
+ detail::function::useless_clear_type*)
+{
+ return !f.empty();
+}
+
+inline bool operator==(detail::function::useless_clear_type*,
+ const function_base& f)
+{
+ return f.empty();
+}
+
+inline bool operator!=(detail::function::useless_clear_type*,
+ const function_base& f)
+{
+ return !f.empty();
+}
+#endif
+
+#ifdef BOOST_NO_SFINAE
+// Comparisons between ndnboost::function objects and arbitrary function objects
+template<typename Functor>
+ inline bool operator==(const function_base& f, Functor g)
+ {
+ typedef mpl::bool_<(is_integral<Functor>::value)> integral;
+ return detail::function::compare_equal(f, g, 0, integral());
+ }
+
+template<typename Functor>
+ inline bool operator==(Functor g, const function_base& f)
+ {
+ typedef mpl::bool_<(is_integral<Functor>::value)> integral;
+ return detail::function::compare_equal(f, g, 0, integral());
+ }
+
+template<typename Functor>
+ inline bool operator!=(const function_base& f, Functor g)
+ {
+ typedef mpl::bool_<(is_integral<Functor>::value)> integral;
+ return detail::function::compare_not_equal(f, g, 0, integral());
+ }
+
+template<typename Functor>
+ inline bool operator!=(Functor g, const function_base& f)
+ {
+ typedef mpl::bool_<(is_integral<Functor>::value)> integral;
+ return detail::function::compare_not_equal(f, g, 0, integral());
+ }
+#else
+
+# if !(defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ <= 3)
+// Comparisons between ndnboost::function objects and arbitrary function
+// objects. GCC 3.3 and before has an obnoxious bug that prevents this
+// from working.
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator==(const function_base& f, Functor g)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return function_equal(*fp, g);
+ else return false;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator==(Functor g, const function_base& f)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return function_equal(g, *fp);
+ else return false;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator!=(const function_base& f, Functor g)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return !function_equal(*fp, g);
+ else return true;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator!=(Functor g, const function_base& f)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return !function_equal(g, *fp);
+ else return true;
+ }
+# endif
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator==(const function_base& f, reference_wrapper<Functor> g)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return fp == g.get_pointer();
+ else return false;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator==(reference_wrapper<Functor> g, const function_base& f)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return g.get_pointer() == fp;
+ else return false;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator!=(const function_base& f, reference_wrapper<Functor> g)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return fp != g.get_pointer();
+ else return true;
+ }
+
+template<typename Functor>
+ BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL(Functor, bool)
+ operator!=(reference_wrapper<Functor> g, const function_base& f)
+ {
+ if (const Functor* fp = f.template target<Functor>())
+ return g.get_pointer() != fp;
+ else return true;
+ }
+
+#endif // Compiler supporting SFINAE
+
+namespace detail {
+ namespace function {
+ inline bool has_empty_target(const function_base* f)
+ {
+ return f->empty();
+ }
+
+#if BOOST_WORKAROUND(BOOST_MSVC, <= 1310)
+ inline bool has_empty_target(const void*)
+ {
+ return false;
+ }
+#else
+ inline bool has_empty_target(...)
+ {
+ return false;
+ }
+#endif
+ } // end namespace function
+} // end namespace detail
+} // end namespace ndnboost
+
+#undef BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL
+#undef BOOST_FUNCTION_COMPARE_TYPE_ID
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif
+
+#endif // BOOST_FUNCTION_BASE_HEADER
diff --git a/ndnboost/function/function_fwd.hpp b/ndnboost/function/function_fwd.hpp
new file mode 100644
index 0000000..11df6eb
--- /dev/null
+++ b/ndnboost/function/function_fwd.hpp
@@ -0,0 +1,70 @@
+// Boost.Function library
+// Copyright (C) Douglas Gregor 2008
+//
+// Use, modification and distribution is subject to 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)
+//
+// For more information, see http://www.boost.org
+#ifndef BOOST_FUNCTION_FWD_HPP
+#define BOOST_FUNCTION_FWD_HPP
+#include <ndnboost/config.hpp>
+
+#if defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730 && !defined(BOOST_STRICT_CONFIG)
+// Work around a compiler bug.
+// ndnboost::python::objects::function has to be seen by the compiler before the
+// ndnboost::function class template.
+namespace ndnboost { namespace python { namespace objects {
+ class function;
+}}}
+#endif
+
+#if defined (BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
+ || defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG) \
+ || !(defined(BOOST_STRICT_CONFIG) || !defined(__SUNPRO_CC) || __SUNPRO_CC > 0x540)
+# define BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
+#endif
+
+namespace ndnboost {
+ class bad_function_call;
+
+#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
+ // Preferred syntax
+ template<typename Signature> class function;
+
+ template<typename Signature>
+ inline void swap(function<Signature>& f1, function<Signature>& f2)
+ {
+ f1.swap(f2);
+ }
+#endif // have partial specialization
+
+ // Portable syntax
+ template<typename R> class function0;
+ template<typename R, typename T1> class function1;
+ template<typename R, typename T1, typename T2> class function2;
+ template<typename R, typename T1, typename T2, typename T3> class function3;
+ template<typename R, typename T1, typename T2, typename T3, typename T4>
+ class function4;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5>
+ class function5;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6>
+ class function6;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7>
+ class function7;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8>
+ class function8;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8, typename T9>
+ class function9;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8, typename T9,
+ typename T10>
+ class function10;
+}
+
+#endif
diff --git a/ndnboost/function/function_template.hpp b/ndnboost/function/function_template.hpp
new file mode 100644
index 0000000..6256b73
--- /dev/null
+++ b/ndnboost/function/function_template.hpp
@@ -0,0 +1,1185 @@
+// Boost.Function library
+
+// Copyright Douglas Gregor 2001-2006
+// Copyright Emil Dotchevski 2007
+// Use, modification and distribution is subject to 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)
+
+// For more information, see http://www.boost.org
+
+// Note: this header is a header template and must NOT have multiple-inclusion
+// protection.
+#include <ndnboost/function/detail/prologue.hpp>
+#include <ndnboost/detail/no_exceptions_support.hpp>
+
+#if defined(BOOST_MSVC)
+# pragma warning( push )
+# pragma warning( disable : 4127 ) // "conditional expression is constant"
+#endif
+
+#define BOOST_FUNCTION_TEMPLATE_PARMS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, typename T)
+
+#define BOOST_FUNCTION_TEMPLATE_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, T)
+
+#define BOOST_FUNCTION_PARM(J,I,D) BOOST_PP_CAT(T,I) BOOST_PP_CAT(a,I)
+
+#define BOOST_FUNCTION_PARMS BOOST_PP_ENUM(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_PARM,BOOST_PP_EMPTY)
+
+#define BOOST_FUNCTION_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, a)
+
+#define BOOST_FUNCTION_ARG_TYPE(J,I,D) \
+ typedef BOOST_PP_CAT(T,I) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(I)),_type);
+
+#define BOOST_FUNCTION_ARG_TYPES BOOST_PP_REPEAT(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_ARG_TYPE,BOOST_PP_EMPTY)
+
+// Comma if nonzero number of arguments
+#if BOOST_FUNCTION_NUM_ARGS == 0
+# define BOOST_FUNCTION_COMMA
+#else
+# define BOOST_FUNCTION_COMMA ,
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+// Class names used in this version of the code
+#define BOOST_FUNCTION_FUNCTION BOOST_JOIN(function,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_INVOKER \
+ BOOST_JOIN(function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_INVOKER \
+ BOOST_JOIN(void_function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(void_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(void_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_MEMBER_INVOKER \
+ BOOST_JOIN(function_mem_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VOID_MEMBER_INVOKER \
+ BOOST_JOIN(function_void_mem_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_INVOKER \
+ BOOST_JOIN(get_function_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER \
+ BOOST_JOIN(get_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER \
+ BOOST_JOIN(get_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_MEMBER_INVOKER \
+ BOOST_JOIN(get_member_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_GET_INVOKER \
+ BOOST_JOIN(get_invoker,BOOST_FUNCTION_NUM_ARGS)
+#define BOOST_FUNCTION_VTABLE BOOST_JOIN(basic_vtable,BOOST_FUNCTION_NUM_ARGS)
+
+#ifndef BOOST_NO_VOID_RETURNS
+# define BOOST_FUNCTION_VOID_RETURN_TYPE void
+# define BOOST_FUNCTION_RETURN(X) X
+#else
+# define BOOST_FUNCTION_VOID_RETURN_TYPE ndnboost::detail::function::unusable
+# define BOOST_FUNCTION_RETURN(X) X; return BOOST_FUNCTION_VOID_RETURN_TYPE ()
+#endif
+
+namespace ndnboost {
+ namespace detail {
+ namespace function {
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_INVOKER
+ {
+ static R invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+ {
+ FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr);
+ return f(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr);
+ BOOST_FUNCTION_RETURN(f(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_OBJ_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f;
+ if (function_allows_small_object_optimization<FunctionObj>::value)
+ f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data);
+ else
+ f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ return (*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f;
+ if (function_allows_small_object_optimization<FunctionObj>::value)
+ f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data);
+ else
+ f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_FUNCTION_REF_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ return (*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ FunctionObj* f =
+ reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr);
+ BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Handle invocation of member pointers. */
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_MEMBER_INVOKER
+ {
+ static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ MemberPtr* f =
+ reinterpret_cast<MemberPtr*>(&function_obj_ptr.data);
+ return ndnboost::mem_fn(*f)(BOOST_FUNCTION_ARGS);
+ }
+ };
+
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_VOID_MEMBER_INVOKER
+ {
+ static BOOST_FUNCTION_VOID_RETURN_TYPE
+ invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_PARMS)
+
+ {
+ MemberPtr* f =
+ reinterpret_cast<MemberPtr*>(&function_obj_ptr.data);
+ BOOST_FUNCTION_RETURN(ndnboost::mem_fn(*f)(BOOST_FUNCTION_ARGS));
+ }
+ };
+#endif
+
+ template<
+ typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+ template<
+ typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_FUNCTION_REF_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Retrieve the appropriate invoker for a member pointer. */
+ template<
+ typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ struct BOOST_FUNCTION_GET_MEMBER_INVOKER
+ {
+ typedef typename mpl::if_c<(is_void<R>::value),
+ BOOST_FUNCTION_VOID_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >,
+ BOOST_FUNCTION_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >
+ >::type type;
+ };
+#endif
+
+ /* Given the tag returned by get_function_tag, retrieve the
+ actual invoker that will be used for the given function
+ object.
+
+ Each specialization contains an "apply" nested class template
+ that accepts the function object, return type, function
+ argument types, and allocator. The resulting "apply" class
+ contains two typedefs, "invoker_type" and "manager_type",
+ which correspond to the invoker and manager types. */
+ template<typename Tag>
+ struct BOOST_FUNCTION_GET_INVOKER { };
+
+ /* Retrieve the invoker for a function pointer. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_ptr_tag>
+ {
+ template<typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionPtr> manager_type;
+ };
+
+ template<typename FunctionPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER<
+ FunctionPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionPtr> manager_type;
+ };
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ /* Retrieve the invoker for a member pointer. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<member_ptr_tag>
+ {
+ template<typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<MemberPtr> manager_type;
+ };
+
+ template<typename MemberPtr,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER<
+ MemberPtr,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<MemberPtr> manager_type;
+ };
+ };
+#endif
+
+ /* Retrieve the invoker for a function object. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_obj_tag>
+ {
+ template<typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager<FunctionObj> manager_type;
+ };
+
+ template<typename FunctionObj,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER<
+ FunctionObj,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef functor_manager_a<FunctionObj, Allocator> manager_type;
+ };
+ };
+
+ /* Retrieve the invoker for a reference to a function object. */
+ template<>
+ struct BOOST_FUNCTION_GET_INVOKER<function_obj_ref_tag>
+ {
+ template<typename RefWrapper,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct apply
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ typename RefWrapper::type,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef reference_manager<typename RefWrapper::type> manager_type;
+ };
+
+ template<typename RefWrapper,
+ typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS,
+ typename Allocator>
+ struct apply_a
+ {
+ typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER<
+ typename RefWrapper::type,
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >::type
+ invoker_type;
+
+ typedef reference_manager<typename RefWrapper::type> manager_type;
+ };
+ };
+
+
+ /**
+ * vtable for a specific ndnboost::function instance. This
+ * structure must be an aggregate so that we can use static
+ * initialization in ndnboost::function's assign_to and assign_to_a
+ * members. It therefore cannot have any constructors,
+ * destructors, base classes, etc.
+ */
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ struct BOOST_FUNCTION_VTABLE
+ {
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename function_return_type<R>::type result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ typedef result_type (*invoker_type)(function_buffer&
+ BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS);
+
+ template<typename F>
+ bool assign_to(F f, function_buffer& functor) const
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to(f, functor, tag());
+ }
+ template<typename F,typename Allocator>
+ bool assign_to_a(F f, function_buffer& functor, Allocator a) const
+ {
+ typedef typename get_function_tag<F>::type tag;
+ return assign_to_a(f, functor, a, tag());
+ }
+
+ void clear(function_buffer& functor) const
+ {
+ if (base.manager)
+ base.manager(functor, functor, destroy_functor_tag);
+ }
+
+ private:
+ // Function pointers
+ template<typename FunctionPtr>
+ bool
+ assign_to(FunctionPtr f, function_buffer& functor, function_ptr_tag) const
+ {
+ this->clear(functor);
+ if (f) {
+ // should be a reinterpret cast, but some compilers insist
+ // on giving cv-qualifiers to free functions
+ functor.func_ptr = reinterpret_cast<void (*)()>(f);
+ return true;
+ } else {
+ return false;
+ }
+ }
+ template<typename FunctionPtr,typename Allocator>
+ bool
+ assign_to_a(FunctionPtr f, function_buffer& functor, Allocator, function_ptr_tag) const
+ {
+ return assign_to(f,functor,function_ptr_tag());
+ }
+
+ // Member pointers
+#if BOOST_FUNCTION_NUM_ARGS > 0
+ template<typename MemberPtr>
+ bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag) const
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ if (f) {
+ this->assign_to(ndnboost::mem_fn(f), functor);
+ return true;
+ } else {
+ return false;
+ }
+ }
+ template<typename MemberPtr,typename Allocator>
+ bool assign_to_a(MemberPtr f, function_buffer& functor, Allocator a, member_ptr_tag) const
+ {
+ // DPG TBD: Add explicit support for member function
+ // objects, so we invoke through mem_fn() but we retain the
+ // right target_type() values.
+ if (f) {
+ this->assign_to_a(ndnboost::mem_fn(f), functor, a);
+ return true;
+ } else {
+ return false;
+ }
+ }
+#endif // BOOST_FUNCTION_NUM_ARGS > 0
+
+ // Function objects
+ // Assign to a function object using the small object optimization
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::true_) const
+ {
+ new (reinterpret_cast<void*>(&functor.data)) FunctionObj(f);
+ }
+ template<typename FunctionObj,typename Allocator>
+ void
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator, mpl::true_) const
+ {
+ assign_functor(f,functor,mpl::true_());
+ }
+
+ // Assign to a function object allocated on the heap.
+ template<typename FunctionObj>
+ void
+ assign_functor(FunctionObj f, function_buffer& functor, mpl::false_) const
+ {
+ functor.obj_ptr = new FunctionObj(f);
+ }
+ template<typename FunctionObj,typename Allocator>
+ void
+ assign_functor_a(FunctionObj f, function_buffer& functor, Allocator a, mpl::false_) const
+ {
+ typedef functor_wrapper<FunctionObj,Allocator> functor_wrapper_type;
+ typedef typename Allocator::template rebind<functor_wrapper_type>::other
+ wrapper_allocator_type;
+ typedef typename wrapper_allocator_type::pointer wrapper_allocator_pointer_type;
+ wrapper_allocator_type wrapper_allocator(a);
+ wrapper_allocator_pointer_type copy = wrapper_allocator.allocate(1);
+ wrapper_allocator.construct(copy, functor_wrapper_type(f,a));
+ functor_wrapper_type* new_f = static_cast<functor_wrapper_type*>(copy);
+ functor.obj_ptr = new_f;
+ }
+
+ template<typename FunctionObj>
+ bool
+ assign_to(FunctionObj f, function_buffer& functor, function_obj_tag) const
+ {
+ if (!ndnboost::detail::function::has_empty_target(ndnboost::addressof(f))) {
+ assign_functor(f, functor,
+ mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>());
+ return true;
+ } else {
+ return false;
+ }
+ }
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(FunctionObj f, function_buffer& functor, Allocator a, function_obj_tag) const
+ {
+ if (!ndnboost::detail::function::has_empty_target(ndnboost::addressof(f))) {
+ assign_functor_a(f, functor, a,
+ mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>());
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ // Reference to a function object
+ template<typename FunctionObj>
+ bool
+ assign_to(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, function_obj_ref_tag) const
+ {
+ functor.obj_ref.obj_ptr = (void *)(f.get_pointer());
+ functor.obj_ref.is_const_qualified = is_const<FunctionObj>::value;
+ functor.obj_ref.is_volatile_qualified = is_volatile<FunctionObj>::value;
+ return true;
+ }
+ template<typename FunctionObj,typename Allocator>
+ bool
+ assign_to_a(const reference_wrapper<FunctionObj>& f,
+ function_buffer& functor, Allocator, function_obj_ref_tag) const
+ {
+ return assign_to(f,functor,function_obj_ref_tag());
+ }
+
+ public:
+ vtable_base base;
+ invoker_type invoker;
+ };
+ } // end namespace function
+ } // end namespace detail
+
+ template<
+ typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS
+ >
+ class BOOST_FUNCTION_FUNCTION : public function_base
+
+#if BOOST_FUNCTION_NUM_ARGS == 1
+
+ , public std::unary_function<T0,R>
+
+#elif BOOST_FUNCTION_NUM_ARGS == 2
+
+ , public std::binary_function<T0,T1,R>
+
+#endif
+
+ {
+ public:
+#ifndef BOOST_NO_VOID_RETURNS
+ typedef R result_type;
+#else
+ typedef typename ndnboost::detail::function::function_return_type<R>::type
+ result_type;
+#endif // BOOST_NO_VOID_RETURNS
+
+ private:
+ typedef ndnboost::detail::function::BOOST_FUNCTION_VTABLE<
+ R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>
+ vtable_type;
+
+ vtable_type* get_vtable() const {
+ return reinterpret_cast<vtable_type*>(
+ reinterpret_cast<std::size_t>(vtable) & ~static_cast<std::size_t>(0x01));
+ }
+
+ struct clear_type {};
+
+ public:
+ BOOST_STATIC_CONSTANT(int, args = BOOST_FUNCTION_NUM_ARGS);
+
+ // add signature for ndnboost::lambda
+ template<typename Args>
+ struct sig
+ {
+ typedef result_type type;
+ };
+
+#if BOOST_FUNCTION_NUM_ARGS == 1
+ typedef T0 argument_type;
+#elif BOOST_FUNCTION_NUM_ARGS == 2
+ typedef T0 first_argument_type;
+ typedef T1 second_argument_type;
+#endif
+
+ BOOST_STATIC_CONSTANT(int, arity = BOOST_FUNCTION_NUM_ARGS);
+ BOOST_FUNCTION_ARG_TYPES
+
+ typedef BOOST_FUNCTION_FUNCTION self_type;
+
+ BOOST_FUNCTION_FUNCTION() : function_base() { }
+
+ // MSVC chokes if the following two constructors are collapsed into
+ // one with a default parameter.
+ template<typename Functor>
+ BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif // BOOST_NO_SFINAE
+ ) :
+ function_base()
+ {
+ this->assign_to(f);
+ }
+ template<typename Functor,typename Allocator>
+ BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif // BOOST_NO_SFINAE
+ ) :
+ function_base()
+ {
+ this->assign_to_a(f,a);
+ }
+
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION(clear_type*) : function_base() { }
+#else
+ BOOST_FUNCTION_FUNCTION(int zero) : function_base()
+ {
+ BOOST_ASSERT(zero == 0);
+ }
+#endif
+
+ BOOST_FUNCTION_FUNCTION(const BOOST_FUNCTION_FUNCTION& f) : function_base()
+ {
+ this->assign_to_own(f);
+ }
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ BOOST_FUNCTION_FUNCTION(BOOST_FUNCTION_FUNCTION&& f) : function_base()
+ {
+ this->move_assign(f);
+ }
+#endif
+
+ ~BOOST_FUNCTION_FUNCTION() { clear(); }
+
+ result_type operator()(BOOST_FUNCTION_PARMS) const
+ {
+ if (this->empty())
+ ndnboost::throw_exception(bad_function_call());
+
+ return get_vtable()->invoker
+ (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS);
+ }
+
+ // The distinction between when to use BOOST_FUNCTION_FUNCTION and
+ // when to use self_type is obnoxious. MSVC cannot handle self_type as
+ // the return type of these assignment operators, but Borland C++ cannot
+ // handle BOOST_FUNCTION_FUNCTION as the type of the temporary to
+ // construct.
+ template<typename Functor>
+#ifndef BOOST_NO_SFINAE
+ typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ BOOST_FUNCTION_FUNCTION&>::type
+#else
+ BOOST_FUNCTION_FUNCTION&
+#endif
+ operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f)
+ {
+ this->clear();
+ BOOST_TRY {
+ this->assign_to(f);
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ return *this;
+ }
+ template<typename Functor,typename Allocator>
+ void assign(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a)
+ {
+ this->clear();
+ BOOST_TRY{
+ this->assign_to_a(f,a);
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ }
+
+#ifndef BOOST_NO_SFINAE
+ BOOST_FUNCTION_FUNCTION& operator=(clear_type*)
+ {
+ this->clear();
+ return *this;
+ }
+#else
+ BOOST_FUNCTION_FUNCTION& operator=(int zero)
+ {
+ BOOST_ASSERT(zero == 0);
+ this->clear();
+ return *this;
+ }
+#endif
+
+ // Assignment from another BOOST_FUNCTION_FUNCTION
+ BOOST_FUNCTION_FUNCTION& operator=(const BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (&f == this)
+ return *this;
+
+ this->clear();
+ BOOST_TRY {
+ this->assign_to_own(f);
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ return *this;
+ }
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ // Move assignment from another BOOST_FUNCTION_FUNCTION
+ BOOST_FUNCTION_FUNCTION& operator=(BOOST_FUNCTION_FUNCTION&& f)
+ {
+
+ if (&f == this)
+ return *this;
+
+ this->clear();
+ BOOST_TRY {
+ this->move_assign(f);
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ return *this;
+ }
+#endif
+
+ void swap(BOOST_FUNCTION_FUNCTION& other)
+ {
+ if (&other == this)
+ return;
+
+ BOOST_FUNCTION_FUNCTION tmp;
+ tmp.move_assign(*this);
+ this->move_assign(other);
+ other.move_assign(tmp);
+ }
+
+ // Clear out a target, if there is one
+ void clear()
+ {
+ if (vtable) {
+ if (!this->has_trivial_copy_and_destroy())
+ get_vtable()->clear(this->functor);
+ vtable = 0;
+ }
+ }
+
+#if (defined __SUNPRO_CC) && (__SUNPRO_CC <= 0x530) && !(defined BOOST_NO_COMPILER_CONFIG)
+ // Sun C++ 5.3 can't handle the safe_bool idiom, so don't use it
+ operator bool () const { return !this->empty(); }
+#else
+ private:
+ struct dummy {
+ void nonnull() {}
+ };
+
+ typedef void (dummy::*safe_bool)();
+
+ public:
+ operator safe_bool () const
+ { return (this->empty())? 0 : &dummy::nonnull; }
+
+ bool operator!() const
+ { return this->empty(); }
+#endif
+
+ private:
+ void assign_to_own(const BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (!f.empty()) {
+ this->vtable = f.vtable;
+ if (this->has_trivial_copy_and_destroy())
+ this->functor = f.functor;
+ else
+ get_vtable()->base.manager(f.functor, this->functor,
+ ndnboost::detail::function::clone_functor_tag);
+ }
+ }
+
+ template<typename Functor>
+ void assign_to(Functor f)
+ {
+ using detail::function::vtable_base;
+
+ typedef typename detail::function::get_function_tag<Functor>::type tag;
+ typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker;
+ typedef typename get_invoker::
+ template apply<Functor, R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>
+ handler_type;
+
+ typedef typename handler_type::invoker_type invoker_type;
+ typedef typename handler_type::manager_type manager_type;
+
+ // Note: it is extremely important that this initialization use
+ // static initialization. Otherwise, we will have a race
+ // condition here in multi-threaded code. See
+ // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/.
+ static const vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to(f, functor)) {
+ std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base);
+ if (ndnboost::has_trivial_copy_constructor<Functor>::value &&
+ ndnboost::has_trivial_destructor<Functor>::value &&
+ detail::function::function_allows_small_object_optimization<Functor>::value)
+ value |= static_cast<size_t>(0x01);
+ vtable = reinterpret_cast<detail::function::vtable_base *>(value);
+ } else
+ vtable = 0;
+ }
+
+ template<typename Functor,typename Allocator>
+ void assign_to_a(Functor f,Allocator a)
+ {
+ using detail::function::vtable_base;
+
+ typedef typename detail::function::get_function_tag<Functor>::type tag;
+ typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker;
+ typedef typename get_invoker::
+ template apply_a<Functor, R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS,
+ Allocator>
+ handler_type;
+
+ typedef typename handler_type::invoker_type invoker_type;
+ typedef typename handler_type::manager_type manager_type;
+
+ // Note: it is extremely important that this initialization use
+ // static initialization. Otherwise, we will have a race
+ // condition here in multi-threaded code. See
+ // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/.
+ static const vtable_type stored_vtable =
+ { { &manager_type::manage }, &invoker_type::invoke };
+
+ if (stored_vtable.assign_to_a(f, functor, a)) {
+ std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base);
+ if (ndnboost::has_trivial_copy_constructor<Functor>::value &&
+ ndnboost::has_trivial_destructor<Functor>::value &&
+ detail::function::function_allows_small_object_optimization<Functor>::value)
+ value |= static_cast<std::size_t>(0x01);
+ vtable = reinterpret_cast<detail::function::vtable_base *>(value);
+ } else
+ vtable = 0;
+ }
+
+ // Moves the value from the specified argument to *this. If the argument
+ // has its function object allocated on the heap, move_assign will pass
+ // its buffer to *this, and set the argument's buffer pointer to NULL.
+ void move_assign(BOOST_FUNCTION_FUNCTION& f)
+ {
+ if (&f == this)
+ return;
+
+ BOOST_TRY {
+ if (!f.empty()) {
+ this->vtable = f.vtable;
+ if (this->has_trivial_copy_and_destroy())
+ this->functor = f.functor;
+ else
+ get_vtable()->base.manager(f.functor, this->functor,
+ ndnboost::detail::function::move_functor_tag);
+ f.vtable = 0;
+ } else {
+ clear();
+ }
+ } BOOST_CATCH (...) {
+ vtable = 0;
+ BOOST_RETHROW;
+ }
+ BOOST_CATCH_END
+ }
+ };
+
+ template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ inline void swap(BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >& f1,
+ BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS
+ >& f2)
+ {
+ f1.swap(f2);
+ }
+
+// Poison comparisons between ndnboost::function objects of the same type.
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ void operator==(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&);
+template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS>
+ void operator!=(const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>&,
+ const BOOST_FUNCTION_FUNCTION<
+ R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_ARGS>& );
+
+#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
+
+#if BOOST_FUNCTION_NUM_ARGS == 0
+#define BOOST_FUNCTION_PARTIAL_SPEC R (void)
+#else
+#define BOOST_FUNCTION_PARTIAL_SPEC R (BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS,T))
+#endif
+
+template<typename R BOOST_FUNCTION_COMMA
+ BOOST_FUNCTION_TEMPLATE_PARMS>
+class function<BOOST_FUNCTION_PARTIAL_SPEC>
+ : public BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>
+{
+ typedef BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> base_type;
+ typedef function self_type;
+
+ struct clear_type {};
+
+public:
+
+ function() : base_type() {}
+
+ template<typename Functor>
+ function(Functor f
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif
+ ) :
+ base_type(f)
+ {
+ }
+ template<typename Functor,typename Allocator>
+ function(Functor f, Allocator a
+#ifndef BOOST_NO_SFINAE
+ ,typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ int>::type = 0
+#endif
+ ) :
+ base_type(f,a)
+ {
+ }
+
+#ifndef BOOST_NO_SFINAE
+ function(clear_type*) : base_type() {}
+#endif
+
+ function(const self_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+ function(const base_type& f) : base_type(static_cast<const base_type&>(f)){}
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ // Move constructors
+ function(self_type&& f): base_type(static_cast<base_type&&>(f)){}
+ function(base_type&& f): base_type(static_cast<base_type&&>(f)){}
+#endif
+
+ self_type& operator=(const self_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ self_type& operator=(self_type&& f)
+ {
+ self_type(static_cast<self_type&&>(f)).swap(*this);
+ return *this;
+ }
+#endif
+
+ template<typename Functor>
+#ifndef BOOST_NO_SFINAE
+ typename enable_if_c<
+ (ndnboost::type_traits::ice_not<
+ (is_integral<Functor>::value)>::value),
+ self_type&>::type
+#else
+ self_type&
+#endif
+ operator=(Functor f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+#ifndef BOOST_NO_SFINAE
+ self_type& operator=(clear_type*)
+ {
+ this->clear();
+ return *this;
+ }
+#endif
+
+ self_type& operator=(const base_type& f)
+ {
+ self_type(f).swap(*this);
+ return *this;
+ }
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ self_type& operator=(base_type&& f)
+ {
+ self_type(static_cast<base_type&&>(f)).swap(*this);
+ return *this;
+ }
+#endif
+};
+
+#undef BOOST_FUNCTION_PARTIAL_SPEC
+#endif // have partial specialization
+
+} // end namespace ndnboost
+
+// Cleanup after ourselves...
+#undef BOOST_FUNCTION_VTABLE
+#undef BOOST_FUNCTION_COMMA
+#undef BOOST_FUNCTION_FUNCTION
+#undef BOOST_FUNCTION_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_MEMBER_INVOKER
+#undef BOOST_FUNCTION_VOID_MEMBER_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER
+#undef BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER
+#undef BOOST_FUNCTION_GET_MEM_FUNCTION_INVOKER
+#undef BOOST_FUNCTION_GET_INVOKER
+#undef BOOST_FUNCTION_TEMPLATE_PARMS
+#undef BOOST_FUNCTION_TEMPLATE_ARGS
+#undef BOOST_FUNCTION_PARMS
+#undef BOOST_FUNCTION_PARM
+#undef BOOST_FUNCTION_ARGS
+#undef BOOST_FUNCTION_ARG_TYPE
+#undef BOOST_FUNCTION_ARG_TYPES
+#undef BOOST_FUNCTION_VOID_RETURN_TYPE
+#undef BOOST_FUNCTION_RETURN
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif