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-rw-r--r--interval_map.py103
1 files changed, 0 insertions, 103 deletions
diff --git a/interval_map.py b/interval_map.py
deleted file mode 100644
index daf22cd..0000000
--- a/interval_map.py
+++ /dev/null
@@ -1,103 +0,0 @@
-# -*- coding: utf-8 -*-
-
-from bisect import bisect_left, bisect_right
-from itertools import izip
-
-class IntervalMap(object):
- """
- This class maps a set of intervals to a set of values.
-
- >>> i = IntervalMap()
- >>> i[0:5] = "hello world"
- >>> i[6:10] = "hello cruel world"
- >>> print i[4]
- "hello world"
- """
-
- def __init__(self):
- """initializes an empty IntervalMap"""
- self._bounds = []
- self._items = []
- self._upperitem = None
-
- def __setitem__(self, _slice, _value):
- """sets an interval mapping"""
- assert isinstance(_slice, slice), 'The key must be a slice object'
-
- if _slice.start is None:
- start_point = -1
- else:
- start_point = bisect_left(self._bounds, _slice.start)
-
- if _slice.stop is None:
- end_point = -1
- else:
- end_point = bisect_left(self._bounds, _slice.stop)
-
- if start_point>=0:
- if start_point < len(self._bounds) and self._bounds[start_point]<_slice.start:
- start_point += 1
-
- if end_point>=0:
- self._bounds[start_point:end_point] = [_slice.start, _slice.stop]
- if start_point < len(self._items):
- self._items[start_point:end_point] = [self._items[start_point], _value]
- else:
- self._items[start_point:end_point] = [self._upperitem, _value]
- else:
- self._bounds[start_point:] = [_slice.start]
- if start_point < len(self._items):
- self._items[start_point:] = [self._items[start_point], _value]
- else:
- self._items[start_point:] = [self._upperitem]
- self._upperitem = _value
- else:
- if end_point>=0:
- self._bounds[:end_point] = [_slice.stop]
- self._items[:end_point] = [_value]
- else:
- self._bounds[:] = []
- self._items[:] = []
- self._upperitem = _value
-
- def __getitem__(self,_point):
- """gets a value from the mapping"""
- assert not isinstance(_point, slice), 'The key cannot be a slice object'
-
- index = bisect_right(self._bounds, _point)
- if index < len(self._bounds):
- return self._items[index]
- else:
- return self._upperitem
-
- def items(self):
- """returns an iterator with each item being
- ((low_bound, high_bound), value)
- these items are returned in order"""
- previous_bound = None
- for (b, v) in izip(self._bounds, self._items):
- if v is not None:
- yield (previous_bound, b), v
- previous_bound = b
- if self._upperitem is not None:
- yield (previous_bound, None), self._upperitem
-
- def values(self):
- """returns an iterator with each item being a stored value
- the items are returned in order"""
- for v in self._items:
- if v is not None:
- yield v
- if self._upperitem is not None:
- yield self._upperitem
-
- def __repr__(self):
- s = []
- for b,v in self.items():
- if v is not None:
- s.append('[%r, %r] => %r'%(
- b[0],
- b[1],
- v
- ))
- return '{'+', '.join(s)+'}'