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Implement type checking for XS objects

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Type handling is mainly done using templates.
Template Slic3r::ClassTraits is used to store info about exported types (perl class name). Currently only perl class name and refference name is used.
Template values are initialized by REGISTER_CLASS macro. This macro is used in .cpp file of class ( it needs to be used exactly for each type).

Ref<type> class is used to return value as perl reference. Operator overloading is used to make c++ and XSpp happy, only pointer value should be possible to return.

Clone<type> class is used to return copy of value ( using new and copy constructor). Copy is created on assigment, this should be probably improved (memory leak on multiple assignments).
It is overloaded to be able to return type, type* and type&.

Typechecking in ExtrusionEntityCollection updated to check all passed types.
This commit is contained in:
Petr Ledvina 2014-04-27 19:18:53 +02:00
parent e68b6b6f4c
commit 115aa6885f
35 changed files with 426 additions and 173 deletions
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44
xs/src/perlglue.hpp Normal file
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#ifndef slic3r_perlglue_hpp_
#define slic3r_perlglue_hpp_
namespace Slic3r {
template<class T>
struct ClassTraits {
static const char* name;
static const char* name_ref;
};
#define REGISTER_CLASS(cname,perlname) \
class cname; \
template <>const char* ClassTraits<cname>::name = "Slic3r::" perlname; \
template <>const char* ClassTraits<cname>::name_ref = "Slic3r::" perlname "::Ref";
template<class T>
const char* perl_class_name(const T*) { return ClassTraits<T>::name; }
template<class T>
const char* perl_class_name_ref(const T*) { return ClassTraits<T>::name_ref; }
template <class T>
class Ref {
T* val;
public:
Ref() {}
Ref(T* t) : val(t) {}
operator T*() const {return val; }
static const char* CLASS() { return ClassTraits<T>::name_ref; }
};
template <class T>
class Clone {
T* val;
public:
Clone() {}
Clone(T* t) : val(new T(*t)) {}
Clone(const T& t) : val(new T(t)) {}
operator T*() const {return val; }
static const char* CLASS() { return ClassTraits<T>::name; }
};
};
#endif