diff -r 9513afbd57f1 -r 744cd0b4b8cd DebugClients/Python/coverage/misc.py
--- a/DebugClients/Python/coverage/misc.py Thu Jan 07 13:42:05 2010 +0000
+++ b/DebugClients/Python/coverage/misc.py Thu Jan 07 13:42:51 2010 +0000
@@ -2,10 +2,10 @@
def nice_pair(pair):
"""Make a nice string representation of a pair of numbers.
-
+
If the numbers are equal, just return the number, otherwise return the pair
with a dash between them, indicating the range.
-
+
"""
start, end = pair
if start == end:
@@ -20,32 +20,50 @@
Format a list of line numbers for printing by coalescing groups of lines as
long as the lines represent consecutive statements. This will coalesce
even if there are gaps between statements.
-
+
For example, if `statements` is [1,2,3,4,5,10,11,12,13,14] and
`lines` is [1,2,5,10,11,13,14] then the result will be "1-2, 5-11, 13-14".
-
+
"""
pairs = []
i = 0
j = 0
start = None
- pairs = []
while i < len(statements) and j < len(lines):
if statements[i] == lines[j]:
if start == None:
start = lines[j]
end = lines[j]
- j = j + 1
+ j += 1
elif start:
pairs.append((start, end))
start = None
- i = i + 1
+ i += 1
if start:
pairs.append((start, end))
ret = ', '.join(map(nice_pair, pairs))
return ret
+def expensive(fn):
+ """A decorator to cache the result of an expensive operation.
+
+ Only applies to methods with no arguments.
+
+ """
+ attr = "_cache_" + fn.__name__
+ def _wrapped(self):
+ """Inner fn that checks the cache."""
+ if not hasattr(self, attr):
+ setattr(self, attr, fn(self))
+ return getattr(self, attr)
+ return _wrapped
+
+
class CoverageException(Exception):
"""An exception specific to Coverage."""
pass
+
+class NoSource(CoverageException):
+ """Used to indicate we couldn't find the source for a module."""
+ pass
