Mercurial > babel > mirror
comparison babel/support.py @ 559:8831b754f81e trunk
Allow disabling cache behaviour in LazyProxy (fixes #208, initial patch Pedro Algarvio)
| author | fschwarz |
|---|---|
| date | Wed, 31 Aug 2011 12:38:06 +0000 |
| parents | ca203b2af83c |
| children | 7c81bb0d32e5 |
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| 557:4e561e6411ba | 559:8831b754f81e |
|---|---|
| 181 ... print greeting | 181 ... print greeting |
| 182 Hello, Joe! | 182 Hello, Joe! |
| 183 Hello, universe! | 183 Hello, universe! |
| 184 Hello, world! | 184 Hello, world! |
| 185 """ | 185 """ |
| 186 __slots__ = ['_func', '_args', '_kwargs', '_value'] | 186 __slots__ = ['_func', '_args', '_kwargs', '_value', '_is_cache_enabled'] |
| 187 | 187 |
| 188 def __init__(self, func, *args, **kwargs): | 188 def __init__(self, func, *args, **kwargs): |
| 189 is_cache_enabled = kwargs.pop('enable_cache', True) | |
| 189 # Avoid triggering our own __setattr__ implementation | 190 # Avoid triggering our own __setattr__ implementation |
| 190 object.__setattr__(self, '_func', func) | 191 object.__setattr__(self, '_func', func) |
| 191 object.__setattr__(self, '_args', args) | 192 object.__setattr__(self, '_args', args) |
| 192 object.__setattr__(self, '_kwargs', kwargs) | 193 object.__setattr__(self, '_kwargs', kwargs) |
| 194 object.__setattr__(self, '_is_cache_enabled', is_cache_enabled) | |
| 193 object.__setattr__(self, '_value', None) | 195 object.__setattr__(self, '_value', None) |
| 194 | 196 |
| 195 def value(self): | 197 def value(self): |
| 196 if self._value is None: | 198 if self._value is None: |
| 197 value = self._func(*self._args, **self._kwargs) | 199 value = self._func(*self._args, **self._kwargs) |
| 200 if not self._is_cache_enabled: | |
| 201 return value | |
| 198 object.__setattr__(self, '_value', value) | 202 object.__setattr__(self, '_value', value) |
| 199 return self._value | 203 return self._value |
| 200 value = property(value) | 204 value = property(value) |
| 201 | 205 |
| 202 def __contains__(self, key): | 206 def __contains__(self, key): |