Refactor the hierarchy.

candle-core/src/lib.rs

@@ -0,0 +1,29 @@
+mod backprop;
+mod cpu_backend;
+#[cfg(feature = "cuda")]
+mod cuda_backend;
+mod device;
+mod dtype;
+mod dummy_cuda_backend;
+mod error;
+mod npy;
+mod op;
+mod shape;
+mod storage;
+mod strided_index;
+mod tensor;
+
+pub use cpu_backend::CpuStorage;
+pub use device::{Device, DeviceLocation};
+pub use dtype::{DType, WithDType};
+pub use error::{Error, Result};
+pub use shape::Shape;
+pub use storage::Storage;
+use strided_index::StridedIndex;
+pub use tensor::{Tensor, TensorId};
+
+#[cfg(feature = "cuda")]
+pub use cuda_backend::{CudaDevice, CudaError, CudaStorage};
+
+#[cfg(not(feature = "cuda"))]
+pub use dummy_cuda_backend::{CudaDevice, CudaError, CudaStorage};