Re: [Boost-users] [property_tree] Why I get such a big Lib?

2 Nov 2006

      No idea yet?
:)

anyway ... if you want to take a look at the sources...

http://www.dis.uniroma1.it/~carbone/property_tree/

Maybe I do something wrong and I have not well interpreted
how to write a template method of a non template class ..

But the result is so strange.... 24 MB for a lib is too much.

Regards,
Andrea

Andrea Carbone wrote:
...
Hello,
I am working on a little class using the property_tree lib.
MSVC 7.1, boost 1.33.1 and latest property_tree cvs from sandbox.
I have simply Pimpled the boost::property_tree::ptree class and
implemented a templated get<> to extract values from a conf file ...
I don't know if it is fair to attach files to the mail so I just paste
the header...
Here the interface:
#ifndef xml_config_t_H_INCLUDED
#define xml_config_t_H_INCLUDED
//---------------------------------------------------------------------
#include <string>
#include <memory>
//---------------------------------------------------------------------
//just tags ...
namespace all { namespace core{
namespace detail
        {
        struct xml_t{};
        struct ini_t{};
        }
    static const core::detail::xml_t xml = core::detail::xml_t();
    static const core::detail::ini_t ini = core::detail::ini_t();
    }}
//---------------------------------------------------------------------
namespace all { namespace core{
  //the implementation
    namespace detail{class xml_config_impl;}
    class xml_config_t;
}}
//---------------------------------------------------------------------
class all::core::xml_config_t
{
public:
  ///Constructor
  xml_config_t();
    ~xml_config_t();
///this one calls read_xml
    void load(core::detail::xml_t, const std::string&);
    ///this one calls read_ini
    void load(core::detail::ini_t, const std::string&);
public:
///the template get method .. calls ptree::get<T> ....
template <typename T>
    T   get(const std::string&, const T& defval = T()) const;
private:
//pimpl idiom
    std::auto_ptr<core::detail::xml_config_impl> impl;
};
//---------------------------------------------------------------------------
#endif //xml_config_t_H_INCLUDED
//---------------------------------------------------------------------------
The code compiles and it actually works ... that is fine.
But the problem is that Compiling the class as a static lib, produces an
huge library (~14 MB !!).
I am compiling wiht /MT flag .. RTTI is off and there are just default
settings ...
Why such a huge library file?
The templated method is defined for some builtin data types such as int,
float, long ...etc ...
Thanks for your attention ....