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use forward declaration to treat the dependency of fragments

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This commit is contained in:
Takashi Tamura 2017-03-29 19:11:44 +09:00
commit b32854bc59
4 changed files with 35 additions and 16 deletions
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26
Lib/ruby/std_shared_ptr.i
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@ -1,16 +1,15 @@
#define SWIG_SHARED_PTR_NAMESPACE std
%include <boost_shared_ptr.i>
%include <rubystdcommon_forward.swg>
/*
* We want to put the following code after the fragment "StdTraits" at rubystdcommon.swg.
* This code is needed if and only if the fragment and this std_shared_ptr.i are included at the same time.
* They don't always require each other. The order of including them is not predetermined either.
* So specifying the dependecy by using %fragment does not work.
*/
%wrapper %{
#ifdef SWIG_RUBYSTDCOMMON
%fragment("StdSharedPtrTraits","header",fragment="StdTraitsForwardDeclaration")
{
namespace swig {
/*
template specialization for functions defined in rubystdcommon.swg.
here we should treat smart pointers in a way different from the way we treat raw pointers.
*/
template <class Type>
struct traits_asptr<std::shared_ptr<Type> > {
static int asptr(VALUE obj, std::shared_ptr<Type> **val) {
@ -84,6 +83,11 @@ namespace swig {
}
};
/*
we have to remove the const qualifier to work around a BUG
SWIG_TypeQuery("std::shared_ptr<const Type>") == NULL,
which is caused by %template treating const qualifiers not properly.
*/
template<class Type>
struct traits_from<std::shared_ptr<const Type> > {
static VALUE from(const std::shared_ptr<const Type>& val) {
@ -92,5 +96,7 @@ namespace swig {
}
};
}
#endif
%}
}
//force the fragment.
%fragment("StdSharedPtrTraits");