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* Documentation updates

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* Added BOOST_TYPE_INDEX_CTTI_BEGIN_SKIP BOOST_TYPE_INDEX_CTTI_END_SKIP user macro
This commit is contained in:
Antony Polukhin
2012-07-09 22:09:47 +04:00
parent d661165c43
commit 2cab27489e
2 changed files with 13 additions and 3 deletions
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5
boost/type_index.hpp
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@@ -44,7 +44,10 @@
namespace boost {
namespace detail {
#ifdef _MSC_VER
#if defined(BOOST_TYPE_INDEX_CTTI_BEGIN_SKIP) && defined(BOOST_TYPE_INDEX_CTTI_END_SKIP)
BOOST_STATIC_CONSTANT(std::size_t, ctti_skip_size_at_begin = BOOST_TYPE_INDEX_CTTI_BEGIN_SKIP); // skip user specified bytes count
BOOST_STATIC_CONSTANT(std::size_t, ctti_skip_size_at_end = BOOST_TYPE_INDEX_CTTI_END_SKIP); // skip user specified bytes count
#elif defined _MSC_VER
// sizeof("const char *__cdecl boost::detail::ctti<") - 1
BOOST_STATIC_CONSTANT(std::size_t, ctti_skip_size_at_begin = 40);

11
libs/type_index/doc/type_index.qbk
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@@ -14,7 +14,7 @@
Sometimes getting and storing information about a template type at runtime is required. For such cases a construction like `&typeid(T)` or C++11 class `std::type_index` is usually used. And that is the point, where problems strat:
* `typeid(T)` and `std::type_index` require Run Time Type Info (RTTI)
* some implementations of `typeid(T)` strips const, volatile and references from type, while others don't
* some implementations of `typeid(T)` strip const, volatile and references from type, while others don't
* some compilers have bugs and do not correctly compare `std::type_info` objects across shared libraries
* only a few implementations already provide `std::type_index`
* no easy way to store type info without stripping const, volatile and references
@@ -22,7 +22,7 @@ Sometimes getting and storing information about a template type at runtime is re
Boost.TypeIndex was designed to work around those issues.
[note `T` means type here. Think of it as `T` in `template <class T>` ]
[note `T` means type here. Think of it as of `T` in `template <class T>` ]
[warning This library is not accepted to Boost, it is currrently waiting for review. ]
@@ -79,6 +79,13 @@ int main () {
std::cout << "Has type int: " << tr.has_type<int>()
<< "\nHas type std::string: " << tr.has_type<std::string>()
<< '\n';
try {
tr.add_type<const int>(); // Will throw
} catch (const std::logic_error& e) {
// Will print "Type int already registered"
std::cout << e.what() << std::endl;
}
}
``