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Add a convenience function for the idiom "if(obj.is<Point>())"...

This commit is contained in:
Sylvain Pion 2009-12-16 16:09:04 +00:00
parent 6cf035c3ad
commit b9a62e057c
2 changed files with 9 additions and 0 deletions
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3
STL_Extension/doc_tex/STL_Extension_ref/Object.tex
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@ -40,6 +40,9 @@ Objects of type \ccRefName\ are normally created using the global function
\ccMethod{bool empty();}{returns true, if \ccVar\ does not \ccMethod{bool empty();}{returns true, if \ccVar\ does not
contain an object.} contain an object.}
\ccMethod{template<class T> bool is();}
{returns true, iff \ccVar\ contains an object of type \ccc{T}.}
\ccMethod{const std::type_info & type() const;} \ccMethod{const std::type_info & type() const;}
{returns the type information of the contained type, {returns the type information of the contained type,
or \ccc{typeid(void)} if empty.} or \ccc{typeid(void)} if empty.}

6
STL_Extension/include/CGAL/Object.h
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@ -131,6 +131,12 @@ class Object
return empty(); return empty();
} }
template <class T>
bool is() const
{
return NULL != dynamic_cast<const Wrapper<T> *>(Ptr());
}
const std::type_info & type() const const std::type_info & type() const
{ {
return empty() ? typeid(void) : Ptr()->type(); return empty() ? typeid(void) : Ptr()->type();