Added missing field_type.py

nifty/field_types/field_type.py

+# -*- coding: utf-8 -*-
+
+import numpy as np
+
+
+class FieldType(object):
+    def __init__(self, shape, dtype):
+        try:
+            new_shape = tuple([int(i) for i in shape])
+        except TypeError:
+            new_shape = (int(shape), )
+        self._shape = new_shape
+
+        self._dtype = np.dtype(dtype)
+
+    def __hash__(self):
+        # Extract the identifying parts from the vars(self) dict.
+        result_hash = 0
+        for (key, item) in vars(self).items():
+            result_hash ^= item.__hash__() ^ int(hash(key)/117)
+        return result_hash
+
+    def __eq__(self, x):
+        if isinstance(x, type(self)):
+            return hash(self) == hash(x)
+        else:
+            return False
+
+    @property
+    def shape(self):
+        return self._shape
+
+    @property
+    def dtype(self):
+        return self._dtype
+
+    @property
+    def dim(self):
+        raise NotImplementedError
+
+    def process(self, method_name, array, inplace=True, **kwargs):
+        try:
+            result_array = self.__getattr__(method_name)(array,
+                                                         inplace,
+                                                         **kwargs)
+        except AttributeError:
+            if inplace:
+                result_array = array
+            else:
+                result_array = array.copy()
+
+        return result_array
+
+    def complement_cast(self, x, axes=None):
+        return x