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[base-typemaps.i] add VECTOR_HELPER_INOUT for Split* and Account*

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efficiently convert std::vector<Obj> to/from guile list of objects
This commit is contained in:
Christopher Lam 2024-04-22 10:13:23 +08:00
parent 0f791c474a
commit cb7196a393
2 changed files with 25 additions and 0 deletions
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2
bindings/engine.i
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@ -73,6 +73,8 @@ GLIST_HELPER_INOUT(AccountList, SWIGTYPE_p_Account);
GLIST_HELPER_INOUT(PriceList, SWIGTYPE_p_GNCPrice); GLIST_HELPER_INOUT(PriceList, SWIGTYPE_p_GNCPrice);
// TODO: free PriceList? // TODO: free PriceList?
GLIST_HELPER_INOUT(CommodityList, SWIGTYPE_p_gnc_commodity); GLIST_HELPER_INOUT(CommodityList, SWIGTYPE_p_gnc_commodity);
VECTOR_HELPER_INOUT(SplitsVec, SWIGTYPE_p_Split, Split);
VECTOR_HELPER_INOUT(AccountVec, SWIGTYPE_p_Account, Account);
%typemap(newfree) char * "g_free($1);" %typemap(newfree) char * "g_free($1);"

23
common/base-typemaps.i
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@ -162,6 +162,29 @@ typedef char gchar;
$result = scm_reverse(list); $result = scm_reverse(list);
} }
%enddef %enddef
%define VECTOR_HELPER_INOUT(VectorType, ElemSwigType, ElemType)
%typemap(in) VectorType {
std::vector<ElemType*> accum;
for (auto node = $input; !scm_is_null (node); node = scm_cdr (node))
{
auto p_scm = scm_car (node);
auto p = (scm_is_false (p_scm) || scm_is_null (p_scm)) ? static_cast<ElemType*>(nullptr) :
static_cast<ElemType*>(SWIG_MustGetPtr(p_scm, ElemSwigType, 1, 0));
accum.push_back (p);
}
accum.swap ($1);
}
%typemap(out) VectorType {
SCM list = SCM_EOL;
std::for_each ($1.rbegin(), $1.rend(), [&list](auto n)
{ list = scm_cons(SWIG_NewPointerObj(n, ElemSwigType, 0), list); });
$result = list;
}
%enddef
#elif defined(SWIGPYTHON) /* Typemaps for Python */ #elif defined(SWIGPYTHON) /* Typemaps for Python */
%import "glib.h" %import "glib.h"