forked from boostorg/static_assert
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@ -1,16 +0,0 @@
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subproject libs/static_assert ;
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unit-test static_assert_test : static_assert_test.cpp
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: <sysinclude>$(BOOST_ROOT) : ;
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unit-test static_assert_example_1 : static_assert_example_1.cpp
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: <sysinclude>$(BOOST_ROOT) : ;
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unit-test static_assert_example_2 : static_assert_example_2.cpp
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: <sysinclude>$(BOOST_ROOT) : ;
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unit-test static_assert_example_3 : static_assert_example_3.cpp
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: <sysinclude>$(BOOST_ROOT) : ;
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@ -1,10 +1,9 @@
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// (C) Copyright John Maddock 2000.
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// (C) Copyright John Maddock 2000.
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// Permission to copy, use, modify, sell and
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// Use, modification and distribution are subject to the
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// distribute this software is granted provided this copyright notice appears
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// Boost Software License, Version 1.0. (See accompanying file
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// in all copies. This software is provided "as is" without express or implied
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// warranty, and with no claim as to its suitability for any purpose.
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// See http://www.boost.org for most recent version including documentation.
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// See http://www.boost.org/libs/static_assert for documentation.
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/*
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/*
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Revision history:
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Revision history:
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@ -16,6 +15,7 @@
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#define BOOST_STATIC_ASSERT_HPP
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#define BOOST_STATIC_ASSERT_HPP
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#include <boost/config.hpp>
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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#ifdef __BORLANDC__
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#ifdef __BORLANDC__
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//
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//
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@ -23,12 +23,17 @@
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#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS
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#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS
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#endif
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#endif
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#if defined(__GNUC__) && (__GNUC__ == 3) && ((__GNUC_MINOR__ == 3) || (__GNUC_MINOR__ == 4))
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// gcc 3.3 and 3.4 don't produce good error messages with the default version:
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# define BOOST_SA_GCC_WORKAROUND
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#endif
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namespace boost{
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namespace boost{
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// HP aCC cannot deal with missing names for template value parameters
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// HP aCC cannot deal with missing names for template value parameters
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template <bool x> struct STATIC_ASSERTION_FAILURE;
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template <bool x> struct STATIC_ASSERTION_FAILURE;
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template <> struct STATIC_ASSERTION_FAILURE<true>{};
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template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
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// HP aCC cannot deal with missing names for template value parameters
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// HP aCC cannot deal with missing names for template value parameters
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template<int x> struct static_assert_test{};
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template<int x> struct static_assert_test{};
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@ -57,20 +62,49 @@ template<int x> struct static_assert_test{};
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// style casts: too many compilers currently have problems with static_cast
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// style casts: too many compilers currently have problems with static_cast
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// when used inside integral constant expressions.
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// when used inside integral constant expressions.
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//
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//
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#if !defined(BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS) && !defined(__MWERKS__)
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#if !defined(BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS)
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#ifndef BOOST_MSVC
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#define BOOST_STATIC_ASSERT( B ) \
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#if defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
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typedef ::boost::static_assert_test<\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
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BOOST_JOIN(boost_static_assert_typedef_, __LINE__)
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#else
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// __LINE__ macro broken when -ZI is used see Q199057
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// __LINE__ macro broken when -ZI is used see Q199057
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// fortunately MSVC ignores duplicate typedef's.
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// fortunately MSVC ignores duplicate typedef's.
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#define BOOST_STATIC_ASSERT( B ) \
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#define BOOST_STATIC_ASSERT( B ) \
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typedef ::boost::static_assert_test<\
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typedef ::boost::static_assert_test<\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)\
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> boost_static_assert_typedef_
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> boost_static_assert_typedef_
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#elif defined(BOOST_MSVC)
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#define BOOST_STATIC_ASSERT( B ) \
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typedef ::boost::static_assert_test<\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
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BOOST_JOIN(boost_static_assert_typedef_, __COUNTER__)
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#elif defined(BOOST_INTEL_CXX_VERSION) || defined(BOOST_SA_GCC_WORKAROUND)
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// agurt 15/sep/02: a special care is needed to force Intel C++ issue an error
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// instead of warning in case of failure
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# define BOOST_STATIC_ASSERT( B ) \
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typedef char BOOST_JOIN(boost_static_assert_typedef_, __LINE__) \
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[ ::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >::value ]
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#elif defined(__sgi)
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// special version for SGI MIPSpro compiler
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#define BOOST_STATIC_ASSERT( B ) \
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BOOST_STATIC_CONSTANT(bool, \
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BOOST_JOIN(boost_static_assert_test_, __LINE__) = ( B )); \
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typedef ::boost::static_assert_test<\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< \
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BOOST_JOIN(boost_static_assert_test_, __LINE__) >)>\
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BOOST_JOIN(boost_static_assert_typedef_, __LINE__)
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#elif BOOST_WORKAROUND(__MWERKS__, <= 0x3003)
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// special version for CodeWarrior <= 8.x
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#define BOOST_STATIC_ASSERT( B ) \
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BOOST_STATIC_CONSTANT(int, \
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BOOST_JOIN(boost_static_assert_test_, __LINE__) = \
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >) )
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#else
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// generic version
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|
#define BOOST_STATIC_ASSERT( B ) \
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typedef ::boost::static_assert_test<\
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sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
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BOOST_JOIN(boost_static_assert_typedef_, __LINE__)
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#endif
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#endif
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|
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#else
|
#else
|
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// alternative enum based implementation:
|
// alternative enum based implementation:
|
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#define BOOST_STATIC_ASSERT( B ) \
|
#define BOOST_STATIC_ASSERT( B ) \
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@ -82,5 +116,3 @@ template<int x> struct static_assert_test{};
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#endif // BOOST_STATIC_ASSERT_HPP
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#endif // BOOST_STATIC_ASSERT_HPP
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@ -1,279 +0,0 @@
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<html>
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<head>
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<meta http-equiv="Content-Type"
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content="text/html; charset=iso-8859-1">
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<meta name="Template"
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content="C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\html.dot">
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<meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
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<title>static assertions</title>
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</head>
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<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
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vlink="#800080">
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<h1><img src="../../c++boost.gif" width="276" height="86">Header
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<<a href="../../boost/static_assert.hpp">boost/static_assert.hpp</a>></h1>
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<p>The header <boost/static_assert.hpp> supplies a single
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macro BOOST_STATIC_ASSERT(x), which generates a compile time
|
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error message if the <a
|
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||||||
href="../../more/int_const_guidelines.htm">integral-constant-expression</a>
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<i>x</i> is not true. In other words it is the compile time
|
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equivalent of the assert macro; this is sometimes known as a
|
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"compile-time-assertion", but will be called a "static
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assertion" throughout these docs. Note that if the condition
|
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is true, then the macro will generate neither code nor data - and
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the macro can also be used at either namespace, class or function
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scope. When used in a template, the static assertion will be
|
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evaluated at the time the template is instantiated; this is
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particularly useful for validating template parameters. </p>
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<p>One of the aims of BOOST_STATIC_ASSERT is to generate readable
|
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||||||
error messages. These immediately tell the user that a library is
|
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||||||
being used in a manner that is not supported. While error
|
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||||||
messages obviously differ from compiler to compiler, but you
|
|
||||||
should see something like: </p>
|
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||||||
|
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||||||
<pre>Illegal use of COMPILE_TIME_ASSERTION_FAILURE<false></pre>
|
|
||||||
|
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||||||
<p>Which is intended to at least catch the eye!</p>
|
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||||||
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||||||
<p>You can use BOOST_STATIC_ASSERT at any place where you can
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||||||
place a declaration, that is at <a href="#class">class</a>, <a
|
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||||||
href="#function">function</a> or <a href="#namespace">namespace</a>
|
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||||||
scope, this is illustrated by the following examples:</p>
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||||||
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||||||
<h3><a name="namespace"></a>Use at namespace scope.</h3>
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||||||
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||||||
<p>The macro can be used at namespace scope, if there is some
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||||||
requirement must always be true; generally this means some
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||||||
platform specific requirement. Suppose we require that <b>int</b>
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||||||
be at least a 32-bit integral type, and that <b>wchar_t</b> be an
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||||||
unsigned type. We can verify this at compile time as follows:</p>
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||||||
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||||||
<pre>#include <climits>
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||||||
#include <cwchar>
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||||||
#include <boost/static_assert.hpp>
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||||||
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||||||
namespace my_conditions {
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||||||
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||||||
BOOST_STATIC_ASSERT(sizeof(int) * CHAR_BIT >= 32);
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|
||||||
BOOST_STATIC_ASSERT(WCHAR_MIN >= 0);
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||||||
|
|
||||||
} // namespace my_conditions
|
|
||||||
</pre>
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|
||||||
|
|
||||||
<p>The use of the namespace <i>my_conditions</i> here requires
|
|
||||||
some comment. The macro BOOST_STATIC_ASSERT works by generating
|
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||||||
an <strong>typedef</strong> declaration, and since the typedef
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||||||
must have a name, the macro generates one automatically by
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|
||||||
mangling a stub name with the value of __LINE__. When
|
|
||||||
BOOST_STATIC_ASSERT is used at either class or function scope
|
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||||||
then each use of BOOST_STATIC_ASSERT is guaranteed to produce a
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|
||||||
name unique to that scope (provided you only use the macro once
|
|
||||||
on each line). However when used in a header at namespace scope,
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|
||||||
that namespace can be continued over multiple headers, each of
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|
||||||
which may have their own static assertions, and on the "same"
|
|
||||||
lines, thereby generating duplicate declarations. In theory the
|
|
||||||
compiler should silently ignore duplicate typedef declarations,
|
|
||||||
however many do not do so (and even if they do they are entitled
|
|
||||||
to emit warnings in such cases). To avoid potential problems, if
|
|
||||||
you use BOOST_STATIC_ASSERT in a header and at namespace scope,
|
|
||||||
then enclose them in a namespace unique to that header.</p>
|
|
||||||
|
|
||||||
<h3><a name="function"></a>Use at function scope</h3>
|
|
||||||
|
|
||||||
<p>The macro is typically used at function scope inside template
|
|
||||||
functions, when the template arguments need checking. Imagine
|
|
||||||
that we have an iterator-based algorithm that requires random
|
|
||||||
access iterators. If the algorithm is instantiated with iterators
|
|
||||||
that do not meet our requirements then an error will be generated
|
|
||||||
eventually, but this may be nested deep inside several templates,
|
|
||||||
making it hard for the user to determine what went wrong. One
|
|
||||||
option is to add a static assertion at the top level of the
|
|
||||||
template, in that case if the condition is not met, then an error
|
|
||||||
will be generated in a way that makes it reasonably obvious to
|
|
||||||
the user that the template is being misused.</p>
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|
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|
|
||||||
<pre>#include <iterator>
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|
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#include <boost/static_assert.hpp>
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|
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#include <boost/type_traits.hpp>
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|
||||||
|
|
||||||
template <class RandomAccessIterator >
|
|
||||||
RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator to)
|
|
||||||
{
|
|
||||||
// this template can only be used with
|
|
||||||
// random access iterators...
|
|
||||||
typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
|
|
||||||
BOOST_STATIC_ASSERT((boost::is_convertible<cat, const std::random_access_iterator_tag&>::value));
|
|
||||||
//
|
|
||||||
// detail goes here...
|
|
||||||
return from;
|
|
||||||
}</pre>
|
|
||||||
|
|
||||||
<p>A couple of footnotes are in order here: the extra set of
|
|
||||||
parenthesis around the assert, is to prevent the comma inside the
|
|
||||||
is_convertible template being interpreted by the preprocessor as
|
|
||||||
a macro argument separator; the target type for is_convertible is
|
|
||||||
a reference type, as some compilers have problems using
|
|
||||||
is_convertible when the conversion is via a user defined
|
|
||||||
constructor (in any case there is no guarantee that the iterator
|
|
||||||
tag classes are copy-constructible).</p>
|
|
||||||
|
|
||||||
<h3><a name="class"></a>Use at class scope</h3>
|
|
||||||
|
|
||||||
<p>The macro is typically used inside classes that are templates.
|
|
||||||
Suppose we have a template-class that requires an unsigned
|
|
||||||
integral type with at least 16-bits of precision as a template
|
|
||||||
argument, we can achieve this using something like this:</p>
|
|
||||||
|
|
||||||
<pre>#include <climits>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
template <class UnsignedInt>
|
|
||||||
class myclass
|
|
||||||
{
|
|
||||||
private:
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(UnsignedInt) * CHAR_BIT >= 16);
|
|
||||||
BOOST_STATIC_ASSERT(std::numeric_limits<UnsignedInt>::is_specialized
|
|
||||||
&& std::numeric_limits<UnsignedInt>::is_integer
|
|
||||||
&& !std::numeric_limits<UnsignedInt>::is_signed);
|
|
||||||
public:
|
|
||||||
/* details here */
|
|
||||||
};
|
|
||||||
</pre>
|
|
||||||
|
|
||||||
<h3>How it works</h3>
|
|
||||||
|
|
||||||
<p>BOOST_STATIC_ASSERT works as follows. There is class
|
|
||||||
STATIC_ASSERTION_FAILURE which is defined as:</p>
|
|
||||||
|
|
||||||
<pre>namespace boost{
|
|
||||||
|
|
||||||
template <bool> struct STATIC_ASSERTION_FAILURE;
|
|
||||||
|
|
||||||
template <> struct STATIC_ASSERTION_FAILURE<true>{};
|
|
||||||
|
|
||||||
}</pre>
|
|
||||||
|
|
||||||
<p>The key feature is that the error message triggered by the
|
|
||||||
undefined expression sizeof(STATIC_ASSERTION_FAILURE<0>),
|
|
||||||
tends to be consistent across a wide variety of compilers. The
|
|
||||||
rest of the machinery of BOOST_STATIC_ASSERT is just a way to
|
|
||||||
feed the sizeof expression into a typedef. The use of a macro
|
|
||||||
here is somewhat ugly; however boost members have spent
|
|
||||||
considerable effort trying to invent a static assert that avoided
|
|
||||||
macros, all to no avail. The general conclusion was that the good
|
|
||||||
of a static assert working at namespace, function, and class
|
|
||||||
scope outweighed the ugliness of a macro.</p>
|
|
||||||
|
|
||||||
<h3>Test Programs</h3>
|
|
||||||
|
|
||||||
<p>The following test programs are provided with this library:</p>
|
|
||||||
|
|
||||||
<table border="0" width="100%">
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><i>Test Program</i></td>
|
|
||||||
<td width="33%"><i>Expected to Compile</i></td>
|
|
||||||
<td width="34%"><i>Description</i></td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test.cpp">static_assert_test.cpp</a></td>
|
|
||||||
<td width="33%">Yes</td>
|
|
||||||
<td width="34%">Illustrates usage, and should always
|
|
||||||
compile, really just tests compiler compatibility.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_example_1.cpp">static_assert_example_1.cpp</a></td>
|
|
||||||
<td width="33%">Platform dependent.</td>
|
|
||||||
<td width="34%">Namespace scope test program, may compile
|
|
||||||
depending upon the platform.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_example_2.cpp">static_assert_example_2.cpp</a></td>
|
|
||||||
<td width="33%">Yes</td>
|
|
||||||
<td width="34%">Function scope test program.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_example_3.cpp">static_assert_example_3.cpp</a></td>
|
|
||||||
<td width="33%">Yes</td>
|
|
||||||
<td width="34%">Class scope test program.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_1.cpp">static_assert_test_fail_1.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at namespace scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_2.cpp">static_assert_test_fail_2.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at non-template
|
|
||||||
function scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_3.cpp">static_assert_test_fail_3.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at non-template class
|
|
||||||
scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_4.cpp">static_assert_test_fail_4.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at non-template class
|
|
||||||
scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_5.cpp">static_assert_test_fail_5.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at template class
|
|
||||||
scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_6.cpp">static_assert_test_fail_6.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure at template class
|
|
||||||
member function scope.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td width="33%"><a href="static_assert_test_fail_7.cpp">static_assert_test_fail_7.cpp</a></td>
|
|
||||||
<td width="33%">No</td>
|
|
||||||
<td width="34%">Illustrates failure of class scope
|
|
||||||
example.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td><a href="static_assert_test_fail_8.cpp">static_assert_test_fail_8.cpp</a></td>
|
|
||||||
<td>No</td>
|
|
||||||
<td>Illustrates failure of function scope example.</td>
|
|
||||||
</tr>
|
|
||||||
<tr>
|
|
||||||
<td><a href="static_assert_test_fail_9.cpp">static_assert_test_fail_9.cpp</a></td>
|
|
||||||
<td>No</td>
|
|
||||||
<td>Illustrates failure of function scope example (part 2).</td>
|
|
||||||
</tr>
|
|
||||||
</table>
|
|
||||||
|
|
||||||
<hr>
|
|
||||||
|
|
||||||
<p>Revised 27th Nov 2000</p>
|
|
||||||
|
|
||||||
<p>Documentation <20> Copyright John Maddock 2000. Permission to
|
|
||||||
copy, use, modify, sell and distribute this document is granted
|
|
||||||
provided this copyright notice appears in all copies. This
|
|
||||||
document is provided "as is" without express or implied
|
|
||||||
warranty, and with no claim as to its suitability for any purpose.</p>
|
|
||||||
|
|
||||||
<p>Based on contributions by Steve Cleary and John Maddock.</p>
|
|
||||||
|
|
||||||
<p>Maintained by <a href="mailto:John_Maddock@compuserve.com">John
|
|
||||||
Maddock</a>, the latest version of this file can be found at <a
|
|
||||||
href="http://www.boost.org/">www.boost.org</a>, and the boost
|
|
||||||
discussion list at <a
|
|
||||||
href="http://www.yahoogroups.com/list/boost">www.yahoogroups.com/list/boost</a>.
|
|
||||||
</p>
|
|
||||||
|
|
||||||
<p> </p>
|
|
||||||
|
|
||||||
<p> </p>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
@ -1,32 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <climits>
|
|
||||||
#include <cwchar>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
#if !defined(WCHAR_MIN)
|
|
||||||
#define WCHAR_MIN 0
|
|
||||||
#endif
|
|
||||||
|
|
||||||
namespace boost{
|
|
||||||
|
|
||||||
namespace my_conditions {
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) * CHAR_BIT >= 32);
|
|
||||||
BOOST_STATIC_ASSERT(WCHAR_MIN >= 0);
|
|
||||||
|
|
||||||
} // namespace my_conditions
|
|
||||||
|
|
||||||
} // namespace boost
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
@ -1,40 +0,0 @@
|
|||||||
// (C) Copyright John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <iterator>
|
|
||||||
#include <list>
|
|
||||||
#include <deque>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
#include <boost/type_traits.hpp>
|
|
||||||
|
|
||||||
template <class RandomAccessIterator >
|
|
||||||
RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator to)
|
|
||||||
{
|
|
||||||
// this template can only be used with
|
|
||||||
// random access iterators...
|
|
||||||
typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
|
|
||||||
BOOST_STATIC_ASSERT((boost::is_convertible<cat, const std::random_access_iterator_tag&>::value));
|
|
||||||
//
|
|
||||||
// detail goes here...
|
|
||||||
return from;
|
|
||||||
}
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
std::deque<int> d;
|
|
||||||
std::list<int> l;
|
|
||||||
foo(d.begin(), d.end()); // OK
|
|
||||||
//foo(l.begin(), l.end()); // error
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,32 +0,0 @@
|
|||||||
// (C) Copyright John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <climits>
|
|
||||||
#include <boost/limits.hpp>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
template <class UnsignedInt>
|
|
||||||
class myclass
|
|
||||||
{
|
|
||||||
private:
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(UnsignedInt) * CHAR_BIT >= 16);
|
|
||||||
BOOST_STATIC_ASSERT(std::numeric_limits<UnsignedInt>::is_specialized
|
|
||||||
&& std::numeric_limits<UnsignedInt>::is_integer
|
|
||||||
&& !std::numeric_limits<UnsignedInt>::is_signed);
|
|
||||||
public:
|
|
||||||
/* details here */
|
|
||||||
};
|
|
||||||
|
|
||||||
myclass<unsigned> m1; // this should be OK
|
|
||||||
//myclass<int> m2; // this should fail
|
|
||||||
//myclass<unsigned char> m3; // and so should this
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
return 0;
|
|
||||||
}
|
|
@ -1,86 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should succeed.
|
|
||||||
// some of these tests are rather simplistic (ie useless)
|
|
||||||
// in order to ensure that they compile on all platforms.
|
|
||||||
//
|
|
||||||
|
|
||||||
// Namespace scope
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) >= sizeof(short));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(char) == 1);
|
|
||||||
|
|
||||||
// Function (block) scope
|
|
||||||
void f()
|
|
||||||
{
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) >= sizeof(short));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(char) == 1);
|
|
||||||
}
|
|
||||||
|
|
||||||
struct Bob
|
|
||||||
{
|
|
||||||
private: // can be in private, to avoid namespace pollution
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) >= sizeof(short));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(char) == 1);
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Member function scope: provides access to member variables
|
|
||||||
int x;
|
|
||||||
char c;
|
|
||||||
int f()
|
|
||||||
{
|
|
||||||
#ifndef _MSC_VER // broken sizeof in VC6
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(x) >= sizeof(short));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(c) == 1);
|
|
||||||
#endif
|
|
||||||
return x;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
// Template class scope
|
|
||||||
template <class Int, class Char>
|
|
||||||
struct Bill
|
|
||||||
{
|
|
||||||
private: // can be in private, to avoid namespace pollution
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) > sizeof(char));
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Template member function scope: provides access to member variables
|
|
||||||
Int x;
|
|
||||||
Char c;
|
|
||||||
template <class Int2, class Char2>
|
|
||||||
void f(Int2 , Char2 )
|
|
||||||
{
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Int2));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Char) == sizeof(Char2));
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
void test_Bill() // BOOST_CT_ASSERTs are not triggerred until instantiated
|
|
||||||
{
|
|
||||||
Bill<int, char> z;
|
|
||||||
//Bill<int, int> bad; // will not compile
|
|
||||||
int i = 3;
|
|
||||||
char ch = 'a';
|
|
||||||
z.f(i, ch);
|
|
||||||
//z.f(i, i); // should not compile
|
|
||||||
}
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
test_Bill();
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,21 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
// Namespace scope
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) == sizeof(char)); // will not compile
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,23 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
// Function (block) scope
|
|
||||||
void f()
|
|
||||||
{
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) == sizeof(char)); // should not compile
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,38 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// this tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
struct Bob
|
|
||||||
{
|
|
||||||
private: // can be in private, to avoid namespace pollution
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(int) == sizeof(char)); // will not compile
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Member function scope: provides access to member variables
|
|
||||||
int x;
|
|
||||||
char c;
|
|
||||||
int f()
|
|
||||||
{
|
|
||||||
#ifndef _MSC_VER // broken sizeof in VC6
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(x) == 4);
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(c) == 1);
|
|
||||||
#endif
|
|
||||||
//BOOST_STATIC_ASSERT((sizeof(x) == sizeof(c))); // should not compile
|
|
||||||
return x;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,38 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/config.hpp>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
|
|
||||||
struct Bob
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Member function scope: provides access to member variables
|
|
||||||
int x;
|
|
||||||
char c;
|
|
||||||
int f()
|
|
||||||
{
|
|
||||||
#if !defined(BOOST_MSVC) || BOOST_MSVC > 1200 // broken sizeof in VC6
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(x) == 4);
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(c) == 1);
|
|
||||||
BOOST_STATIC_ASSERT((sizeof(x) == sizeof(c))); // should not compile
|
|
||||||
#endif
|
|
||||||
return x;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,39 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
// Template class scope
|
|
||||||
template <class Int, class Char>
|
|
||||||
struct Bill
|
|
||||||
{
|
|
||||||
private: // can be in private, to avoid namespace pollution
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == 4);
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Char)); // should not compile when instantiated
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Template member function scope: provides access to member variables
|
|
||||||
Int x;
|
|
||||||
Char c;
|
|
||||||
template <class Int2, class Char2>
|
|
||||||
void f(Int2 , Char2 )
|
|
||||||
{
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Int2));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Char) == sizeof(Char2));
|
|
||||||
//BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Char)); // should not compile when instantiated
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
Bill<int, char> b;
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,46 +0,0 @@
|
|||||||
// (C) Copyright Steve Cleary & John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
//
|
|
||||||
// all these tests should fail:
|
|
||||||
//
|
|
||||||
|
|
||||||
// Template class scope
|
|
||||||
template <class Int, class Char>
|
|
||||||
struct Bill
|
|
||||||
{
|
|
||||||
private: // can be in private, to avoid namespace pollution
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == 4);
|
|
||||||
//BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Char)); // should not compile when instantiated
|
|
||||||
public:
|
|
||||||
|
|
||||||
// Template member function scope: provides access to member variables
|
|
||||||
Int x;
|
|
||||||
Char c;
|
|
||||||
template <class Int2, class Char2>
|
|
||||||
void f(Int2 , Char2 )
|
|
||||||
{
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Int2));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Char) == sizeof(Char2));
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(Int) == sizeof(Char)); // should not compile when instantiated
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
void foo()
|
|
||||||
{
|
|
||||||
int i = 0;
|
|
||||||
char c = 0;
|
|
||||||
Bill<int, char> b;
|
|
||||||
// this should fail:
|
|
||||||
b.f(i, c);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,31 +0,0 @@
|
|||||||
// (C) Copyright John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <climits>
|
|
||||||
#include <boost/limits.hpp>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
template <class UnsignedInt>
|
|
||||||
class myclass
|
|
||||||
{
|
|
||||||
private:
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(UnsignedInt) * CHAR_BIT >= 16);
|
|
||||||
BOOST_STATIC_ASSERT(std::numeric_limits<UnsignedInt>::is_specialized
|
|
||||||
&& std::numeric_limits<UnsignedInt>::is_integer
|
|
||||||
&& !std::numeric_limits<UnsignedInt>::is_signed);
|
|
||||||
public:
|
|
||||||
/* details here */
|
|
||||||
};
|
|
||||||
|
|
||||||
myclass<int> m2; // this should fail
|
|
||||||
myclass<unsigned char> m3; // and so should this
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
return 0;
|
|
||||||
}
|
|
@ -1,38 +0,0 @@
|
|||||||
// (C) Copyright John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <iterator>
|
|
||||||
#include <list>
|
|
||||||
#include <deque>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
#include <boost/type_traits.hpp>
|
|
||||||
|
|
||||||
template <class RandomAccessIterator >
|
|
||||||
RandomAccessIterator foo(RandomAccessIterator from, RandomAccessIterator)
|
|
||||||
{
|
|
||||||
// this template can only be used with
|
|
||||||
// random access iterators...
|
|
||||||
typedef typename std::iterator_traits< RandomAccessIterator >::iterator_category cat;
|
|
||||||
BOOST_STATIC_ASSERT((boost::is_convertible<cat*, std::random_access_iterator_tag*>::value));
|
|
||||||
//
|
|
||||||
// detail goes here...
|
|
||||||
return from;
|
|
||||||
}
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
std::deque<int> d;
|
|
||||||
std::list<int> l;
|
|
||||||
foo(d.begin(), d.end()); // OK
|
|
||||||
foo(l.begin(), l.end()); // error
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -1,32 +0,0 @@
|
|||||||
// (C) Copyright John Maddock 2000.
|
|
||||||
// Permission to copy, use, modify, sell and
|
|
||||||
// distribute this software is granted provided this copyright notice appears
|
|
||||||
// in all copies. This software is provided "as is" without express or implied
|
|
||||||
// warranty, and with no claim as to its suitability for any purpose.
|
|
||||||
|
|
||||||
// See http://www.boost.org for most recent version including documentation.
|
|
||||||
|
|
||||||
#include <climits>
|
|
||||||
#include <boost/limits.hpp>
|
|
||||||
#include <boost/static_assert.hpp>
|
|
||||||
|
|
||||||
template <class UnsignedInt>
|
|
||||||
class myclass
|
|
||||||
{
|
|
||||||
private:
|
|
||||||
BOOST_STATIC_ASSERT(sizeof(UnsignedInt) * CHAR_BIT >= 16);
|
|
||||||
BOOST_STATIC_ASSERT(std::numeric_limits<UnsignedInt>::is_specialized
|
|
||||||
&& std::numeric_limits<UnsignedInt>::is_integer
|
|
||||||
&& !std::numeric_limits<UnsignedInt>::is_signed);
|
|
||||||
public:
|
|
||||||
/* details here */
|
|
||||||
};
|
|
||||||
|
|
||||||
myclass<unsigned> m1; // this should be OK
|
|
||||||
//myclass<int> m2; // this should fail
|
|
||||||
myclass<unsigned char> m3; // and so should this
|
|
||||||
|
|
||||||
int main()
|
|
||||||
{
|
|
||||||
return 0;
|
|
||||||
}
|
|
Reference in New Issue
Block a user