// Shape returns the (possibly incomplete) shape of the tensor produced p.
func (p Output) Shape() Shape {
status := newStatus()
port := p.c()
ndims := C.TF_GraphGetTensorNumDims(p.Op.g.c, port, status.c)
if err := status.Err(); err != nil {
// This should not be possible since an error only occurs if
// the operation does not belong to the graph. It should not
// be possible to construct such an Operation object.
return Shape{}
}
if ndims < 0 {
return Shape{}
}
if ndims == 0 {
return ScalarShape()
}
dims := make([]C.int64_t, ndims)
C.TF_GraphGetTensorShape(p.Op.g.c, port, &dims[0], ndims, status.c)
if err := status.Err(); err != nil {
// Same as above, should not be possible.
return Shape{}
}
ret := Shape{dims: make([]int64, ndims)}
for i := 0; i < int(ndims); i++ {
ret.dims[i] = int64(dims[i])
}
return ret
}
// Shape returns the (possibly incomplete) shape of the tensor produced p.
//
// Returns a slice of length 0 if the tensor is a scalar. Returns a slice
// where shape[i] is the size of the i-th dimension of the tensor, or -1 if the
// size of that dimension is not known.
//
// Returns an error if the number of dimensions of the tensor is not known.
func (p Output) Shape() (shape []int64, err error) {
status := newStatus()
port := p.c()
ndims := C.TF_GraphGetTensorNumDims(p.Op.g.c, port, status.c)
if err := status.Err(); err != nil {
return nil, err
}
if ndims < 0 {
return nil, errors.New("unknown number of dimensions")
}
if ndims == 0 {
return nil, nil
}
dims := make([]C.int64_t, ndims)
C.TF_GraphGetTensorShape(p.Op.g.c, port, &dims[0], ndims, status.c)
if err := status.Err(); err != nil {
return nil, err
}
ret := make([]int64, ndims)
for i := 0; i < int(ndims); i++ {
ret[i] = int64(dims[i])
}
return ret, nil
}