Remove useless Segment class

It was used solely for Segment.get (the only place where it was used just saved
its .get() method, throwing away instance itself) and looks more like abusal of
the purpose of the classes

powerline/segment.py

@@ -4,35 +4,44 @@ from importlib import import_module
 import sys
 
 
-class Segment(object):
-	def __init__(self, ext, path, default_module=None):
-		self.default_module = default_module or 'powerline.segments.{0}'.format(ext)
-		self.path = path
+def get_function(data, segment):
+	oldpath = sys.path
+	sys.path = data['path'] + sys.path
+	segment_module = str(segment.get('module', data['default_module']))
+	try:
+		return None, getattr(import_module(segment_module), segment['name']), '{0}.{1}'.format(segment_module, segment['name'])
+	finally:
+		sys.path = oldpath
 
-	def get_function(self, segment):
-		oldpath = sys.path
-		sys.path = self.path + sys.path
-		segment_module = str(segment.get('module', self.default_module))
-		try:
-			return None, getattr(import_module(segment_module), segment['name']), '{0}.{1}'.format(segment_module, segment['name'])
-		finally:
-			sys.path = oldpath
 
-	@staticmethod
-	def get_string(segment):
-		return segment.get('contents'), None, None
+def get_string(data, segment):
+	return segment.get('contents'), None, None
 
-	@staticmethod
-	def get_filler(segment):
-		return None, None, None
 
-	def get(self, segment, side):
+def get_filler(data, segment):
+	return None, None, None
+
+
+segment_getters = {
+		"function": get_function,
+		"string": get_string,
+		"filler": get_filler,
+		}
+
+
+def gen_segment_getter(ext, path, default_module=None):
+	data = {
+			"default_module": default_module or 'powerline.segments.'+ext,
+			"path": path
+			}
+
+	def get(segment, side):
 		segment_type = segment.get('type', 'function')
 		try:
-			get_segment_info = getattr(self, 'get_{0}'.format(segment_type))
-		except AttributeError:
+			get_segment_info = segment_getters[segment_type]
+		except KeyError:
 			raise TypeError('Unknown segment type: {0}'.format(segment_type))
-		contents, contents_func, key = get_segment_info(segment)
+		contents, contents_func, key = get_segment_info(data, segment)
 		highlight_group = segment.get('highlight_group', segment.get('name'))
 		divider_highlight_group = segment.get('divider_highlight_group')
 		return {
@@ -58,3 +67,5 @@ class Segment(object):
 			'_space_left': 0,
 			'_space_right': 0,
 			}
+
+	return get

powerline/theme.py

@@ -3,7 +3,7 @@
 from collections import defaultdict
 from copy import copy
 
-from .segment import Segment
+from .segment import gen_segment_getter
 
 
 try:
@@ -31,7 +31,7 @@ class Theme(object):
 			'highlight': defaultdict(lambda: {'fg': False, 'bg': False, 'attr': 0})
 			}
 		self.segment_info = segment_info
-		get_segment = Segment(ext, common_config['paths'], theme_config.get('default_module')).get
+		get_segment = gen_segment_getter(ext, common_config['paths'], theme_config.get('default_module'))
 		for side in ['left', 'right']:
 			self.segments[side].extend((get_segment(segment, side) for segment in theme_config['segments'].get(side, [])))