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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <Eris/Types.h>
#include <Atlas/Message/Element.h>
using namespace Atlas::Message;
namespace Eris
{
void mergeOrCopyElement(const Element& src, Element& dst)
{
if (!src.isMap() || !dst.isMap()) {
dst = src;
return;
}
const MapType& srcMap(src.asMap());
MapType& dstMap(dst.asMap());
MapType::iterator dit = dstMap.begin();
MapType::const_iterator sit = srcMap.begin();
for (; sit != srcMap.end(); ++sit) {
// advance destination to us / past us
while (dit->first < sit->first) ++dit;
if (dit == dstMap.end()) break;
if (dit->first == sit->first) {
// exists in destination, merge
mergeOrCopyElement(sit->second, dit->second);
} else {
// only in source, insert
dstMap.insert(dit, *sit);
}
} // of source map iteration
// copy over remanining attrs
while (sit != srcMap.end()) dstMap.insert(dit, *sit++);
}
} // of namespace
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