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TagProxy.h
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79 lines (55 loc) · 1.69 KB
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#ifndef Rcpp_TagProxy_h
#define Rcpp_TagProxy_h
namespace Rcpp{
template <typename XPtrClass>
class TagProxyPolicy {
public:
class TagProxy : public GenericProxy<TagProxy>{
public:
TagProxy( XPtrClass& xp_ ): xp(xp_){}
template <typename U>
TagProxy& operator=( const U& rhs) {
return set( wrap( rhs ) ) ;
}
template <typename U>
operator U() const {
return as<U>(get());
}
operator SEXP() const {
return get();
}
private:
XPtrClass& xp ;
inline SEXP get() const {
return R_ExternalPtrTag(xp) ;
}
inline TagProxy& set( SEXP x){
R_SetExternalPtrTag( xp, x ) ;
return *this ;
}
} ;
class const_TagProxy : public GenericProxy<const_TagProxy>{
public:
const_TagProxy( XPtrClass& xp_ ): xp(xp_){}
template <typename U>
operator U() const {
return as<U>(get());
}
operator SEXP() const {
return get();
}
private:
XPtrClass& xp ;
inline SEXP get() const {
return R_ExternalPtrTag(xp) ;
}
} ;
TagProxy tag(){
return TagProxy( static_cast<XPtrClass&>(*this) ) ;
}
const_TagProxy tag() const {
return TagProxy( static_cast<const XPtrClass&>(*this) ) ;
}
} ;
}
#endif