2013-05-30 Ed Smith-Rowland <3dw4rd@verizon.net>

	Implement N3642 - User-defined Literals for Standard Library Types
	* include/bits/parse_numbers.h: New.
	* include/std/chrono: Add duration literal operators.
	* include/bits/basic_string.h: Add string literal operators.
	* include/Makefile.in: Add parse_numbers.h.
	* include/Makefile.am: Ditto.
	* testsuite/20_util/duration/literals/values.cc: New.
	* testsuite/20_util/duration/literals/types.cc: New.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Adjust.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Adjust.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Adjust.
	* testsuite/21_strings/basic_string/literals/values.cc: New.
	* testsuite/21_strings/basic_string/literals/types.cc: New.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199584 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 589 insertions, 0 deletions

diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index e8ef7066bcd..f09300b8bee 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -117,6 +117,7 @@ bits_headers = \
 	${bits_srcdir}/move.h \
 	${bits_srcdir}/ostream.tcc \
 	${bits_srcdir}/ostream_insert.h \
+	${bits_srcdir}/parse_numbers.h \
 	${bits_srcdir}/postypes.h \
 	${bits_srcdir}/ptr_traits.h \
 	${bits_srcdir}/random.h \
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 2ba9433bd7d..a090cad9fce 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -379,6 +379,7 @@ bits_headers = \
 	${bits_srcdir}/move.h \
 	${bits_srcdir}/ostream.tcc \
 	${bits_srcdir}/ostream_insert.h \
+	${bits_srcdir}/parse_numbers.h \
 	${bits_srcdir}/postypes.h \
 	${bits_srcdir}/ptr_traits.h \
 	${bits_srcdir}/random.h \
diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index 23bd9b9c096..a249df23742 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -3106,6 +3106,43 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace
 
+#if __cplusplus > 201103L
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+inline namespace literals {
+inline namespace string_literals {
+
+  inline basic_string<char>
+  operator"" s(const char* __str, size_t __len)
+  { return basic_string<char>{__str, __len}; }
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+  inline basic_string<wchar_t>
+  operator"" s(const wchar_t* __str, size_t __len)
+  { return basic_string<wchar_t>{__str, __len}; }
+#endif
+
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+  inline basic_string<char16_t>
+  operator"" s(const char16_t* __str, size_t __len)
+  { return basic_string<char16_t>{__str, __len}; }
+
+  inline basic_string<char32_t>
+  operator"" s(const char32_t* __str, size_t __len)
+  { return basic_string<char32_t>{__str, __len}; }
+#endif
+
+} // inline namespace string_literals
+} // inline namespace literals
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif // __cplusplus > 201103L
+
 #endif // C++11
 
 #endif /* _BASIC_STRING_H */
diff --git a/libstdc++-v3/include/bits/parse_numbers.h b/libstdc++-v3/include/bits/parse_numbers.h
new file mode 100644
index 00000000000..eaa3d27a18a
--- /dev/null
+++ b/libstdc++-v3/include/bits/parse_numbers.h
@@ -0,0 +1,417 @@
+// Components for compile-time parsing of numbers -*- C++ -*-
+
+// Copyright (C) 2013 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/parse_numbers.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{chrono}
+ */
+
+#ifndef _PARSE_NUMBERS_H
+#define _PARSE_NUMBERS_H 1
+
+#pragma GCC system_header
+
+// From n3642.pdf except I added binary literals and digit separator '`'.
+
+#if __cplusplus > 201103L
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+namespace __parse_int {
+
+  template<unsigned _Base, char _Dig>
+    struct _Digit;
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '0'>
+    {
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '1'>
+    {
+      static constexpr bool valid{true};
+      static constexpr unsigned value{1};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '2'>
+    {
+      static_assert(_Base > 2, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{2};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '3'>
+    {
+      static_assert(_Base > 3, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{3};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '4'>
+    {
+      static_assert(_Base > 4, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{4};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '5'>
+    {
+      static_assert(_Base > 5, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{5};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '6'>
+    {
+      static_assert(_Base > 6, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{6};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '7'>
+    {
+      static_assert(_Base > 7, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{7};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '8'>
+    {
+      static_assert(_Base > 8, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{8};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, '9'>
+    {
+      static_assert(_Base > 9, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{9};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'a'>
+    {
+      static_assert(_Base > 0xa, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xa};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'A'>
+    {
+      static_assert(_Base > 0xa, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xa};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'b'>
+    {
+      static_assert(_Base > 0xb, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xb};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'B'>
+    {
+      static_assert(_Base > 0xb, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xb};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'c'>
+    {
+      static_assert(_Base > 0xc, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xc};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'C'>
+    {
+      static_assert(_Base > 0xc, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xc};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'd'>
+    {
+      static_assert(_Base > 0xd, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xd};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'D'>
+    {
+      static_assert(_Base > 0xd, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xd};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'e'>
+    {
+      static_assert(_Base > 0xe, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xe};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'E'>
+    {
+      static_assert(_Base > 0xe, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xe};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'f'>
+    {
+      static_assert(_Base > 0xf, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xf};
+    };
+
+  template<unsigned _Base>
+    struct _Digit<_Base, 'F'>
+    {
+      static_assert(_Base > 0xf, "invalid digit");
+      static constexpr bool valid{true};
+      static constexpr unsigned value{0xf};
+    };
+
+  //  Digit separator
+  template<unsigned _Base>
+    struct _Digit<_Base, '`'>
+    {
+      static constexpr bool valid{false};
+      static constexpr unsigned value{0};
+    };
+
+
+//------------------------------------------------------------------------------
+
+  template<unsigned _Base, char _Dig, char... _Digs>
+    struct _Digits_help
+    {
+      static constexpr unsigned
+	value{_Digit<_Base, _Dig>::valid ?
+	      1U + _Digits_help<_Base, _Digs...>::value :
+	      _Digits_help<_Base, _Digs...>::value};
+    };
+
+  template<unsigned _Base, char _Dig>
+    struct _Digits_help<_Base, _Dig>
+    {
+      static constexpr unsigned value{_Digit<_Base, _Dig>::valid ? 1U : 0U};
+    };
+
+  template<unsigned _Base, char... _Digs>
+    struct _Digits
+    {
+      static constexpr unsigned value{_Digits_help<_Base, _Digs...>::value};
+    };
+
+  template<unsigned _Base>
+    struct _Digits<_Base>
+    {
+      static constexpr unsigned value{0U};
+    };
+
+//------------------------------------------------------------------------------
+
+  template<unsigned _Base, char _Dig, char... _Digs>
+    struct _Power_help
+    {
+      static constexpr unsigned
+	value{_Digit<_Base, _Dig>::valid ?
+	      _Base * _Power_help<_Base, _Digs...>::value :
+	      _Power_help<_Base, _Digs...>::value};
+    };
+
+  template<unsigned _Base, char _Dig>
+    struct _Power_help<_Base, _Dig>
+    {
+      static constexpr unsigned value{_Digit<_Base, _Dig>::valid ? 1U : 0U};
+    };
+
+  template<unsigned _Base, char... _Digs>
+    struct _Power
+    {
+      static constexpr unsigned value{_Power_help<_Base, _Digs...>::value};
+    };
+
+  template<unsigned _Base>
+    struct _Power<_Base>
+    {
+      static constexpr unsigned value{0U};
+    };
+
+//------------------------------------------------------------------------------
+
+  template<unsigned _Base, unsigned _Pow, char _Dig, char... _Digs>
+    struct _Number_help
+    {
+      static constexpr unsigned
+	value{_Digit<_Base, _Dig>::valid ?
+	      _Pow * _Digit<_Base, _Dig>::value
+	      + _Number_help<_Base, _Pow / _Base, _Digs...>::value :
+	      _Number_help<_Base, _Pow, _Digs...>::value};
+    };
+
+  template<unsigned _Base, unsigned _Pow, char _Dig>
+    struct _Number_help<_Base, _Pow, _Dig>
+    {
+      //static_assert(_Pow == 1U, "power should be one");
+      static constexpr unsigned
+	value{_Digit<_Base, _Dig>::valid ? _Digit<_Base, _Dig>::value : 0U};
+    };
+
+  template<unsigned _Base, char... _Digs>
+    struct _Number
+    {
+      static constexpr unsigned
+	value{_Number_help<_Base, _Power<_Base, _Digs...>::value,
+			   _Digs...>::value};
+    };
+
+  template<unsigned _Base>
+    struct _Number<_Base>
+    {
+      static constexpr unsigned value{0U};
+    };
+
+//------------------------------------------------------------------------------
+//  This _Parse_int is the same 'level' as the old _Base_dispatch.
+
+  template<char... _Digs>
+    struct _Parse_int;
+
+  template<char... _Digs>
+    struct _Parse_int<'0', 'b', _Digs...>
+    {
+      static constexpr unsigned long long
+	value{_Number<2U, _Digs...>::value};
+    };
+
+  template<char... _Digs>
+    struct _Parse_int<'0', 'B', _Digs...>
+    {
+      static constexpr unsigned long long
+	value{_Number<2U, _Digs...>::value};
+    };
+
+  template<char... _Digs>
+    struct _Parse_int<'0', 'x', _Digs...>
+    {
+      static constexpr unsigned long long
+	value{_Number<16U, _Digs...>::value};
+    };
+
+  template<char... _Digs>
+    struct _Parse_int<'0', 'X', _Digs...>
+    {
+      static constexpr unsigned long long
+	value{_Number<16U, _Digs...>::value};
+    };
+
+  template<char... _Digs>
+    struct _Parse_int<'0', _Digs...>
+    {
+      static constexpr unsigned long long
+	value{_Number<8U, _Digs...>::value};
+    };
+
+  template<char... _Digs>
+    struct _Parse_int
+    {
+      static constexpr unsigned long long
+	value{_Number<10U, _Digs...>::value};
+    };
+
+} // namespace __parse_int
+
+
+namespace __select_int {
+
+  template<unsigned long long _Val, typename... _Ints>
+    struct _Select_int_base;
+
+  template<unsigned long long _Val, typename _IntType, typename... _Ints>
+    struct _Select_int_base<_Val, _IntType, _Ints...>
+    : integral_constant
+      <
+	typename conditional
+	<
+	  _Val <= static_cast<unsigned long long>
+		    (std::numeric_limits<_IntType>::max()),
+	  _IntType,
+	  typename _Select_int_base<_Val, _Ints...>::value_type
+	>::type,
+	_Val
+      >
+    { };
+
+  template<unsigned long long _Val>
+    struct _Select_int_base<_Val> : integral_constant<unsigned long long, _Val>
+    { };
+
+  template<char... _Digs>
+    struct _Select_int
+    : _Select_int_base<
+	__parse_int::_Parse_int<_Digs...>::value,
+	unsigned char,
+	unsigned short,
+	unsigned int,
+	unsigned long,
+	unsigned long long
+      >
+    { };
+
+} // namespace __select_int
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif // __cplusplus > 201103L
+
+#endif // _PARSE_NUMBERS_H
diff --git a/libstdc++-v3/include/std/chrono b/libstdc++-v3/include/std/chrono
index 6d9df7d7dda..f4c4ef017e6 100644
--- a/libstdc++-v3/include/std/chrono
+++ b/libstdc++-v3/include/std/chrono
@@ -39,6 +39,7 @@
 #include <type_traits>
 #include <limits>
 #include <ctime>
+#include <bits/parse_numbers.h> // for literals support.
 
 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
 
@@ -786,4 +787,136 @@ _GLIBCXX_END_NAMESPACE_VERSION
 
 #endif // C++11
 
+#if __cplusplus > 201103L
+
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+inline namespace literals {
+inline namespace chrono_literals {
+
+  namespace __detail {
+
+    using namespace __parse_int;
+
+    template<unsigned long long _Val, typename _Dur>
+      struct _Select_type
+      : conditional<
+	  _Val <= static_cast<unsigned long long>
+		    (numeric_limits<typename _Dur::rep>::max()),
+	  _Dur, void>
+      {
+	static constexpr typename _Select_type::type
+	  value{static_cast<typename _Select_type::type>(_Val)};
+      };
+
+    template<unsigned long long _Val, typename _Dur>
+      constexpr typename _Select_type<_Val, _Dur>::type
+      _Select_type<_Val, _Dur>::value;
+
+  } // __detail
+
+  inline constexpr chrono::duration<long double, ratio<3600,1>>
+  operator"" h(long double __hours)
+  { return chrono::duration<long double, ratio<3600,1>>{__hours}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::hours>::type
+    operator"" h()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::hours>::value;
+    }
+
+  inline constexpr chrono::duration<long double, ratio<60,1>>
+  operator"" min(long double __mins)
+  { return chrono::duration<long double, ratio<60,1>>{__mins}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::minutes>::type
+    operator"" min()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::minutes>::value;
+    }
+
+  inline constexpr chrono::duration<long double>
+  operator"" s(long double __secs)
+  { return chrono::duration<long double>{__secs}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::seconds>::type
+    operator"" s()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::seconds>::value;
+    }
+
+  inline constexpr chrono::duration<long double, milli>
+  operator"" ms(long double __msecs)
+  { return chrono::duration<long double, milli>{__msecs}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::milliseconds>::type
+    operator"" ms()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::milliseconds>::value;
+    }
+
+  inline constexpr chrono::duration<long double, micro>
+  operator"" us(long double __usecs)
+  { return chrono::duration<long double, micro>{__usecs}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::microseconds>::type
+    operator"" us()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::microseconds>::value;
+    }
+
+  inline constexpr chrono::duration<long double, nano>
+  operator"" ns(long double __nsecs)
+  { return chrono::duration<long double, nano>{__nsecs}; }
+
+  template <char... _Digits>
+    inline constexpr typename
+    __detail::_Select_type<__select_int::_Select_int<_Digits...>::value,
+			   chrono::nanoseconds>::type
+    operator"" ns()
+    {
+      return __detail::_Select_type<
+			__select_int::_Select_int<_Digits...>::value,
+			chrono::nanoseconds>::value;
+    }
+
+} // inline namespace chrono_literals
+} // inline namespace literals
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif //_GLIBCXX_USE_C99_STDINT_TR1
+
+#endif // __cplusplus > 201103L
+
 #endif //_GLIBCXX_CHRONO