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author | Paolo Carlini <pcarlini@suse.de> | 2005-02-23 17:23:44 +0000 |
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committer | Paolo Carlini <paolo@gcc.gnu.org> | 2005-02-23 17:23:44 +0000 |
commit | c150a271b1fa7ad02b245dea1579b3f2e981e85a (patch) | |
tree | 7fdedf5c972da7c58c73f7ec99acfc1c1a1fc3d4 /libstdc++-v3 | |
parent | f439764ffa75ffef38c6e7bfd4815288bd3e2c18 (diff) | |
download | gcc-c150a271b1fa7ad02b245dea1579b3f2e981e85a.zip gcc-c150a271b1fa7ad02b245dea1579b3f2e981e85a.tar.gz gcc-c150a271b1fa7ad02b245dea1579b3f2e981e85a.tar.bz2 |
type_traits: Implement is_convertible.
2005-02-23 Paolo Carlini <pcarlini@suse.de>
* include/tr1/type_traits: Implement is_convertible.
* testsuite/tr1/4_metaprogramming/relationships_between_types/
is_convertible/is_convertible.cc: New.
* testsuite/tr1/4_metaprogramming/relationships_between_types/
is_convertible/typedefs.cc: Likewise.
* testsuite/testsuite_tr1.h: Add class DerivedType.
* include/tr1/type_traits (is_function): Don't mistake references
to function types for function types.
* testsuite/tr1/4_metaprogramming/primary_type_categories/
is_function/is_function.cc: Add testcase.
From-SVN: r95458
Diffstat (limited to 'libstdc++-v3')
6 files changed, 167 insertions, 1 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index bd1091c..14e038d 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,17 @@ +2005-02-23 Paolo Carlini <pcarlini@suse.de> + + * include/tr1/type_traits: Implement is_convertible. + * testsuite/tr1/4_metaprogramming/relationships_between_types/ + is_convertible/is_convertible.cc: New. + * testsuite/tr1/4_metaprogramming/relationships_between_types/ + is_convertible/typedefs.cc: Likewise. + * testsuite/testsuite_tr1.h: Add class DerivedType. + + * include/tr1/type_traits (is_function): Don't mistake references + to function types for function types. + * testsuite/tr1/4_metaprogramming/primary_type_categories/ + is_function/is_function.cc: Add testcase. + 2005-02-22 Benjamin Kosnik <bkoz@redhat.com> * scripts/check_performance: Tweaks. diff --git a/libstdc++-v3/include/tr1/type_traits b/libstdc++-v3/include/tr1/type_traits index c4c1ff4..0fb5916 100644 --- a/libstdc++-v3/include/tr1/type_traits +++ b/libstdc++-v3/include/tr1/type_traits @@ -208,7 +208,8 @@ namespace tr1 struct is_enum : public integral_constant<bool, __is_enum_helper<_Tp>::__value> { }; - template<typename _Tp, bool = is_void<_Tp>::value> + template<typename _Tp, bool = (is_void<_Tp>::value + || is_reference<_Tp>::value)> struct __is_function_helper { static const bool __value = (__conv_helper<typename @@ -440,6 +441,39 @@ namespace tr1 struct is_same<_Tp, _Tp> : public true_type { }; + template<typename _Tp> + struct __is_int_or_cref + { + typedef typename remove_reference<_Tp>::type __rr_Tp; + static const bool __value = (is_integral<_Tp>::value + || (is_integral<__rr_Tp>::value + && is_const<__rr_Tp>::value + && !is_volatile<__rr_Tp>::value)); + }; + + template<typename _From, typename _To, + bool = (is_function<_To>::value || is_array<_To>::value + // This special case is here only to avoid warnings. + || (is_floating_point<typename + remove_reference<_From>::type>::value + && __is_int_or_cref<_To>::__value))> + struct __is_convertible_helper + { + // "An imaginary lvalue of type From...". + static const bool __value = (__conv_helper<typename + add_reference<_From>::type, _To>::__value); + }; + + template<typename _From, typename _To> + struct __is_convertible_helper<_From, _To, true> + { static const bool __value = __is_int_or_cref<_To>::__value; }; + + template<typename _From, typename _To> + struct is_convertible + : public integral_constant<bool, + __is_convertible_helper<_From, _To>::__value> + { }; + /// @brief const-volatile modifications [4.7.1]. template<typename _Tp> struct remove_const diff --git a/libstdc++-v3/testsuite/testsuite_tr1.h b/libstdc++-v3/testsuite/testsuite_tr1.h index 74a1876..a0302c1 100644 --- a/libstdc++-v3/testsuite/testsuite_tr1.h +++ b/libstdc++-v3/testsuite/testsuite_tr1.h @@ -113,6 +113,8 @@ namespace __gnu_test typedef volatile ClassType vClassType; typedef const volatile ClassType cvClassType; + class DerivedType : public ClassType { }; + enum EnumType { }; struct ConvType diff --git a/libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_function/is_function.cc b/libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_function/is_function.cc index 4bbda75..1c8d64d 100644 --- a/libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_function/is_function.cc +++ b/libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_function/is_function.cc @@ -41,6 +41,7 @@ void test01() VERIFY( (test_category<is_function, const void>(false)) ); VERIFY( (test_category<is_function, AbstractClass>(false)) ); + VERIFY( (test_category<is_function, int(&)(int)>(false)) ); // Sanity check. VERIFY( (test_category<is_function, ClassType>(false)) ); diff --git a/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/is_convertible.cc b/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/is_convertible.cc new file mode 100644 index 0000000..858bfda --- /dev/null +++ b/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/is_convertible.cc @@ -0,0 +1,79 @@ +// 2005-02-23 Paolo Carlini <pcarlini@suse.de> +// +// Copyright (C) 2005 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 4.6 Relationships between types + +#include <tr1/type_traits> +#include <testsuite_hooks.h> +#include <testsuite_tr1.h> + +void test01() +{ + bool test __attribute__((unused)) = true; + using std::tr1::is_convertible; + using namespace __gnu_test; + + // Positive tests. + VERIFY( (test_relationship<is_convertible, int, int>(true)) ); + VERIFY( (test_relationship<is_convertible, int, const int>(true)) ); + VERIFY( (test_relationship<is_convertible, volatile int, const int>(true)) ); + VERIFY( (test_relationship<is_convertible, int, float>(true)) ); + VERIFY( (test_relationship<is_convertible, double, float>(true)) ); + VERIFY( (test_relationship<is_convertible, float, int>(true)) ); + VERIFY( (test_relationship<is_convertible, int*, const int*>(true)) ); + VERIFY( (test_relationship<is_convertible, int*, void*>(true)) ); + VERIFY( (test_relationship<is_convertible, int[4], int*>(true)) ); + VERIFY( (test_relationship<is_convertible, float&, int>(true)) ); + VERIFY( (test_relationship<is_convertible, int, const int&>(true)) ); + VERIFY( (test_relationship<is_convertible, const int&, int>(true)) ); + VERIFY( (test_relationship<is_convertible, float, const int&>(true)) ); + VERIFY( (test_relationship<is_convertible, float, volatile float&>(true)) ); + VERIFY( (test_relationship<is_convertible, int(int), int(*)(int)>(true)) ); + VERIFY( (test_relationship<is_convertible, int(int), int(&)(int)>(true)) ); + VERIFY( (test_relationship<is_convertible, int(&)(int), int(*)(int)>(true)) ); + VERIFY( (test_relationship<is_convertible, EnumType, int>(true)) ); + VERIFY( (test_relationship<is_convertible, ClassType, ClassType>(true)) ); + VERIFY( (test_relationship<is_convertible, DerivedType, ClassType>(true)) ); + VERIFY( (test_relationship<is_convertible, DerivedType*, ClassType*>(true)) ); + VERIFY( (test_relationship<is_convertible, DerivedType&, ClassType&>(true)) ); + + // Negative tests. + VERIFY( (test_relationship<is_convertible, const int*, int*>(false)) ); + VERIFY( (test_relationship<is_convertible, int*, float*>(false)) ); + VERIFY( (test_relationship<is_convertible, const int[4], int*>(false)) ); + VERIFY( (test_relationship<is_convertible, int[4], int[4]>(false)) ); + VERIFY( (test_relationship<is_convertible, const int&, int&>(false)) ); + VERIFY( (test_relationship<is_convertible, float&, int&>(false)) ); + VERIFY( (test_relationship<is_convertible, float, volatile int&>(false)) ); + VERIFY( (test_relationship<is_convertible, int(int), int(int)>(false)) ); + VERIFY( (test_relationship<is_convertible, int(int), int(*)(void)>(false)) ); + VERIFY( (test_relationship<is_convertible, int(*)(int), int(&)(int)>(false)) ); + VERIFY( (test_relationship<is_convertible, int, EnumType>(false)) ); + VERIFY( (test_relationship<is_convertible, int, ClassType>(false)) ); + VERIFY( (test_relationship<is_convertible, ClassType, DerivedType>(false)) ); + VERIFY( (test_relationship<is_convertible, ClassType*, DerivedType*>(false)) ); + VERIFY( (test_relationship<is_convertible, ClassType&, DerivedType&>(false)) ); +} + +int main() +{ + test01(); + return 0; +} diff --git a/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/typedefs.cc b/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/typedefs.cc new file mode 100644 index 0000000..333c405a --- /dev/null +++ b/libstdc++-v3/testsuite/tr1/4_metaprogramming/relationships_between_types/is_convertible/typedefs.cc @@ -0,0 +1,36 @@ +// 2005-02-23 Paolo Carlini <pcarlini@suse.de> +// +// Copyright (C) 2005 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// +// NB: This file is for testing tr1/type_traits with NO OTHER INCLUDES. + +#include <tr1/type_traits> + +// { dg-do compile } + +void test01() +{ + // Check for required typedefs + typedef std::tr1::is_convertible<int, int> test_type; + typedef test_type::value_type value_type; + typedef test_type::type type; + typedef test_type::type::value_type type_value_type; + typedef test_type::type::type type_type; +} |