Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python3/coverage/misc.py
DebugClients/Python3/coverage/misc.py
- changeset 29
- 391dc0bc4ae5
- parent 0
- de9c2efb9d02
- child 3495
- fac17a82b431
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| 28:dde24fc7f7ba | 29:391dc0bc4ae5 |
|---|---|
| 1 """Miscellaneous stuff for Coverage.""" | 1 """Miscellaneous stuff for Coverage.""" |
| 2 | 2 |
| 3 def nice_pair(pair): | 3 def nice_pair(pair): |
| 4 """Make a nice string representation of a pair of numbers. | 4 """Make a nice string representation of a pair of numbers. |
| 5 | 5 |
| 6 If the numbers are equal, just return the number, otherwise return the pair | 6 If the numbers are equal, just return the number, otherwise return the pair |
| 7 with a dash between them, indicating the range. | 7 with a dash between them, indicating the range. |
| 8 | 8 |
| 9 """ | 9 """ |
| 10 start, end = pair | 10 start, end = pair |
| 11 if start == end: | 11 if start == end: |
| 12 return "%d" % start | 12 return "%d" % start |
| 13 else: | 13 else: |
| 18 """Nicely format a list of line numbers. | 18 """Nicely format a list of line numbers. |
| 19 | 19 |
| 20 Format a list of line numbers for printing by coalescing groups of lines as | 20 Format a list of line numbers for printing by coalescing groups of lines as |
| 21 long as the lines represent consecutive statements. This will coalesce | 21 long as the lines represent consecutive statements. This will coalesce |
| 22 even if there are gaps between statements. | 22 even if there are gaps between statements. |
| 23 | 23 |
| 24 For example, if `statements` is [1,2,3,4,5,10,11,12,13,14] and | 24 For example, if `statements` is [1,2,3,4,5,10,11,12,13,14] and |
| 25 `lines` is [1,2,5,10,11,13,14] then the result will be "1-2, 5-11, 13-14". | 25 `lines` is [1,2,5,10,11,13,14] then the result will be "1-2, 5-11, 13-14". |
| 26 | 26 |
| 27 """ | 27 """ |
| 28 pairs = [] | 28 pairs = [] |
| 29 i = 0 | 29 i = 0 |
| 30 j = 0 | 30 j = 0 |
| 31 start = None | 31 start = None |
| 32 pairs = [] | |
| 33 while i < len(statements) and j < len(lines): | 32 while i < len(statements) and j < len(lines): |
| 34 if statements[i] == lines[j]: | 33 if statements[i] == lines[j]: |
| 35 if start == None: | 34 if start == None: |
| 36 start = lines[j] | 35 start = lines[j] |
| 37 end = lines[j] | 36 end = lines[j] |
| 38 j = j + 1 | 37 j += 1 |
| 39 elif start: | 38 elif start: |
| 40 pairs.append((start, end)) | 39 pairs.append((start, end)) |
| 41 start = None | 40 start = None |
| 42 i = i + 1 | 41 i += 1 |
| 43 if start: | 42 if start: |
| 44 pairs.append((start, end)) | 43 pairs.append((start, end)) |
| 45 ret = ', '.join(map(nice_pair, pairs)) | 44 ret = ', '.join(map(nice_pair, pairs)) |
| 46 return ret | 45 return ret |
| 47 | 46 |
| 48 | 47 |
| 48 def expensive(fn): | |
| 49 """A decorator to cache the result of an expensive operation. | |
| 50 | |
| 51 Only applies to methods with no arguments. | |
| 52 | |
| 53 """ | |
| 54 attr = "_cache_" + fn.__name__ | |
| 55 def _wrapped(self): | |
| 56 """Inner fn that checks the cache.""" | |
| 57 if not hasattr(self, attr): | |
| 58 setattr(self, attr, fn(self)) | |
| 59 return getattr(self, attr) | |
| 60 return _wrapped | |
| 61 | |
| 62 | |
| 49 class CoverageException(Exception): | 63 class CoverageException(Exception): |
| 50 """An exception specific to Coverage.""" | 64 """An exception specific to Coverage.""" |
| 51 pass | 65 pass |
| 66 | |
| 67 class NoSource(CoverageException): | |
| 68 """Used to indicate we couldn't find the source for a module.""" | |
| 69 pass |
