func spanSliceToVec(slice []Span) *C.cfish_Vector {
if slice == nil {
return nil
}
length := len(slice)
vec := C.cfish_Vec_new(C.size_t(length))
for i := 0; i < length; i++ {
elem := clownfish.Unwrap(slice[i], "slice[i]")
C.CFISH_Vec_Push(vec, C.cfish_incref(elem))
}
return vec
}
// Turn a slice of Go strings into a Vector of Clownfish Strings.
func stringSliceToVec(strings []string) *C.cfish_Vector {
if strings == nil {
return nil
}
size := len(strings)
vec := C.cfish_Vec_new(C.size_t(size))
for i := 0; i < size; i++ {
str := C.CString(strings[i])
length := C.size_t(len(strings[i]))
cfStr := C.cfish_Str_new_steal_utf8(str, length)
C.CFISH_Vec_Push(vec, (*C.cfish_Obj)(unsafe.Pointer(cfStr)))
}
return vec
}
func (d *DataReaderIMP) Aggregator(readers []DataReader, offsets []int32) (retval DataReader, err error) {
err = clownfish.TrapErr(func() {
self := (*C.lucy_DataReader)(clownfish.Unwrap(d, "d"))
size := len(readers)
readersC := C.cfish_Vec_new(C.size_t(size))
defer C.cfish_decref(unsafe.Pointer(readersC))
for i := 0; i < size; i++ {
elemC := clownfish.Unwrap(readers[i], "readers[i]")
C.CFISH_Vec_Push(readersC, C.cfish_incref(elemC))
}
offs := NewI32Array(offsets)
offsetsC := (*C.lucy_I32Array)(clownfish.Unwrap(offs, "offs"))
retvalCF := C.LUCY_DataReader_Aggregator(self, readersC, offsetsC)
defer C.cfish_decref(unsafe.Pointer(retvalCF))
if retvalCF != nil {
retval = clownfish.ToGo(unsafe.Pointer(retvalCF)).(DataReader)
}
})
return retval, err
}