Index: third_party/boost/boost/static_assert.hpp |
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+// (C) Copyright John Maddock 2000. |
+// Use, modification and distribution are 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) |
+ |
+// See http://www.boost.org/libs/static_assert for documentation. |
+ |
+/* |
+ Revision history: |
+ 02 August 2000 |
+ Initial version. |
+*/ |
+ |
+#ifndef BOOST_STATIC_ASSERT_HPP |
+#define BOOST_STATIC_ASSERT_HPP |
+ |
+#include <boost/config.hpp> |
+#include <boost/detail/workaround.hpp> |
+ |
+#ifdef __BORLANDC__ |
+// |
+// workaround for buggy integral-constant expression support: |
+#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS |
+#endif |
+ |
+#if defined(__GNUC__) && (__GNUC__ == 3) && ((__GNUC_MINOR__ == 3) || (__GNUC_MINOR__ == 4)) |
+// gcc 3.3 and 3.4 don't produce good error messages with the default version: |
+# define BOOST_SA_GCC_WORKAROUND |
+#endif |
+ |
+// |
+// If the compiler issues warnings about old C style casts, |
+// then enable this: |
+// |
+#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 4))) |
+# define BOOST_STATIC_ASSERT_BOOL_CAST( x ) ((x) == 0 ? false : true) |
+#else |
+# define BOOST_STATIC_ASSERT_BOOL_CAST(x) (bool)(x) |
+#endif |
+ |
+#ifdef BOOST_HAS_STATIC_ASSERT |
+# define BOOST_STATIC_ASSERT( B ) static_assert(B, #B) |
+#else |
+ |
+namespace boost{ |
+ |
+// HP aCC cannot deal with missing names for template value parameters |
+template <bool x> struct STATIC_ASSERTION_FAILURE; |
+ |
+template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; }; |
+ |
+// HP aCC cannot deal with missing names for template value parameters |
+template<int x> struct static_assert_test{}; |
+ |
+} |
+ |
+// |
+// Implicit instantiation requires that all member declarations be |
+// instantiated, but that the definitions are *not* instantiated. |
+// |
+// It's not particularly clear how this applies to enum's or typedefs; |
+// both are described as declarations [7.1.3] and [7.2] in the standard, |
+// however some compilers use "delayed evaluation" of one or more of |
+// these when implicitly instantiating templates. We use typedef declarations |
+// by default, but try defining BOOST_USE_ENUM_STATIC_ASSERT if the enum |
+// version gets better results from your compiler... |
+// |
+// Implementation: |
+// Both of these versions rely on sizeof(incomplete_type) generating an error |
+// message containing the name of the incomplete type. We use |
+// "STATIC_ASSERTION_FAILURE" as the type name here to generate |
+// an eye catching error message. The result of the sizeof expression is either |
+// used as an enum initialiser, or as a template argument depending which version |
+// is in use... |
+// Note that the argument to the assert is explicitly cast to bool using old- |
+// style casts: too many compilers currently have problems with static_cast |
+// when used inside integral constant expressions. |
+// |
+#if !defined(BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS) |
+ |
+#if defined(BOOST_MSVC) && (BOOST_MSVC < 1300) |
+// __LINE__ macro broken when -ZI is used see Q199057 |
+// fortunately MSVC ignores duplicate typedef's. |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ typedef ::boost::static_assert_test<\ |
+ sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)\ |
+ > boost_static_assert_typedef_ |
+#elif defined(BOOST_MSVC) |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ typedef ::boost::static_assert_test<\ |
+ sizeof(::boost::STATIC_ASSERTION_FAILURE< BOOST_STATIC_ASSERT_BOOL_CAST ( B ) >)>\ |
+ BOOST_JOIN(boost_static_assert_typedef_, __COUNTER__) |
+#elif defined(BOOST_INTEL_CXX_VERSION) || defined(BOOST_SA_GCC_WORKAROUND) |
+// agurt 15/sep/02: a special care is needed to force Intel C++ issue an error |
+// instead of warning in case of failure |
+# define BOOST_STATIC_ASSERT( B ) \ |
+ typedef char BOOST_JOIN(boost_static_assert_typedef_, __LINE__) \ |
+ [ ::boost::STATIC_ASSERTION_FAILURE< BOOST_STATIC_ASSERT_BOOL_CAST( B ) >::value ] |
+#elif defined(__sgi) |
+// special version for SGI MIPSpro compiler |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ BOOST_STATIC_CONSTANT(bool, \ |
+ BOOST_JOIN(boost_static_assert_test_, __LINE__) = ( B )); \ |
+ typedef ::boost::static_assert_test<\ |
+ sizeof(::boost::STATIC_ASSERTION_FAILURE< \ |
+ BOOST_JOIN(boost_static_assert_test_, __LINE__) >)>\ |
+ BOOST_JOIN(boost_static_assert_typedef_, __LINE__) |
+#elif BOOST_WORKAROUND(__MWERKS__, <= 0x3003) |
+// special version for CodeWarrior <= 8.x |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ BOOST_STATIC_CONSTANT(int, \ |
+ BOOST_JOIN(boost_static_assert_test_, __LINE__) = \ |
+ sizeof(::boost::STATIC_ASSERTION_FAILURE< BOOST_STATIC_ASSERT_BOOL_CAST( B ) >) ) |
+#else |
+// generic version |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ typedef ::boost::static_assert_test<\ |
+ sizeof(::boost::STATIC_ASSERTION_FAILURE< BOOST_STATIC_ASSERT_BOOL_CAST( B ) >)>\ |
+ BOOST_JOIN(boost_static_assert_typedef_, __LINE__) |
+#endif |
+ |
+#else |
+// alternative enum based implementation: |
+#define BOOST_STATIC_ASSERT( B ) \ |
+ enum { BOOST_JOIN(boost_static_assert_enum_, __LINE__) \ |
+ = sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >) } |
+#endif |
+#endif // ndef BOOST_HAS_STATIC_ASSERT |
+ |
+#endif // BOOST_STATIC_ASSERT_HPP |
+ |
+ |