|
@@ -268,212 +268,3 @@ def maybe_evaluate(obj):
|
|
|
return obj.__maybe_evaluate__()
|
|
|
except AttributeError:
|
|
|
return obj
|
|
|
-<<<<<<< HEAD
|
|
|
-
|
|
|
-
|
|
|
-def release_local(local):
|
|
|
- """Releases the contents of the local for the current context.
|
|
|
- This makes it possible to use locals without a manager.
|
|
|
-
|
|
|
- Example::
|
|
|
-
|
|
|
- >>> loc = Local()
|
|
|
- >>> loc.foo = 42
|
|
|
- >>> release_local(loc)
|
|
|
- >>> hasattr(loc, 'foo')
|
|
|
- False
|
|
|
-
|
|
|
- With this function one can release :class:`Local` objects as well
|
|
|
- as :class:`StackLocal` objects. However it is not possible to
|
|
|
- release data held by proxies that way, one always has to retain
|
|
|
- a reference to the underlying local object in order to be able
|
|
|
- to release it.
|
|
|
-
|
|
|
- .. versionadded:: 0.6.1
|
|
|
- """
|
|
|
- local.__release_local__()
|
|
|
-
|
|
|
-
|
|
|
-class Local(object):
|
|
|
- __slots__ = ('__storage__', '__ident_func__')
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- object.__setattr__(self, '__storage__', {})
|
|
|
- object.__setattr__(self, '__ident_func__', get_ident)
|
|
|
-
|
|
|
- def __iter__(self):
|
|
|
- return iter(self.__storage__.items())
|
|
|
-
|
|
|
- def __call__(self, proxy):
|
|
|
- """Create a proxy for a name."""
|
|
|
- return Proxy(self, proxy)
|
|
|
-
|
|
|
- def __release_local__(self):
|
|
|
- self.__storage__.pop(self.__ident_func__(), None)
|
|
|
-
|
|
|
- def __getattr__(self, name):
|
|
|
- try:
|
|
|
- return self.__storage__[self.__ident_func__()][name]
|
|
|
- except KeyError:
|
|
|
- raise AttributeError(name)
|
|
|
-
|
|
|
- def __setattr__(self, name, value):
|
|
|
- ident = self.__ident_func__()
|
|
|
- storage = self.__storage__
|
|
|
- try:
|
|
|
- storage[ident][name] = value
|
|
|
- except KeyError:
|
|
|
- storage[ident] = {name: value}
|
|
|
-
|
|
|
- def __delattr__(self, name):
|
|
|
- try:
|
|
|
- del self.__storage__[self.__ident_func__()][name]
|
|
|
- except KeyError:
|
|
|
- raise AttributeError(name)
|
|
|
-
|
|
|
-
|
|
|
-class LocalStack(object):
|
|
|
- """This class works similar to a :class:`Local` but keeps a stack
|
|
|
- of objects instead. This is best explained with an example::
|
|
|
-
|
|
|
- >>> ls = LocalStack()
|
|
|
- >>> ls.push(42)
|
|
|
- >>> ls.top
|
|
|
- 42
|
|
|
- >>> ls.push(23)
|
|
|
- >>> ls.top
|
|
|
- 23
|
|
|
- >>> ls.pop()
|
|
|
- 23
|
|
|
- >>> ls.top
|
|
|
- 42
|
|
|
-
|
|
|
- They can be force released by using a :class:`LocalManager` or with
|
|
|
- the :func:`release_local` function but the correct way is to pop the
|
|
|
- item from the stack after using. When the stack is empty it will
|
|
|
- no longer be bound to the current context (and as such released).
|
|
|
-
|
|
|
- By calling the stack without arguments it returns a proxy that resolves to
|
|
|
- the topmost item on the stack.
|
|
|
-
|
|
|
- """
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- self._local = Local()
|
|
|
-
|
|
|
- def __release_local__(self):
|
|
|
- self._local.__release_local__()
|
|
|
-
|
|
|
- def _get__ident_func__(self):
|
|
|
- return self._local.__ident_func__
|
|
|
-
|
|
|
- def _set__ident_func__(self, value):
|
|
|
- object.__setattr__(self._local, '__ident_func__', value)
|
|
|
- __ident_func__ = property(_get__ident_func__, _set__ident_func__)
|
|
|
- del _get__ident_func__, _set__ident_func__
|
|
|
-
|
|
|
- def __call__(self):
|
|
|
- def _lookup():
|
|
|
- rv = self.top
|
|
|
- if rv is None:
|
|
|
- raise RuntimeError('object unbound')
|
|
|
- return rv
|
|
|
- return Proxy(_lookup)
|
|
|
-
|
|
|
- def push(self, obj):
|
|
|
- """Pushes a new item to the stack"""
|
|
|
- rv = getattr(self._local, 'stack', None)
|
|
|
- if rv is None:
|
|
|
- self._local.stack = rv = []
|
|
|
- rv.append(obj)
|
|
|
- return rv
|
|
|
-
|
|
|
- def pop(self):
|
|
|
- """Removes the topmost item from the stack, will return the
|
|
|
- old value or `None` if the stack was already empty.
|
|
|
- """
|
|
|
- stack = getattr(self._local, 'stack', None)
|
|
|
- if stack is None:
|
|
|
- return None
|
|
|
- elif len(stack) == 1:
|
|
|
- release_local(self._local)
|
|
|
- return stack[-1]
|
|
|
- else:
|
|
|
- return stack.pop()
|
|
|
-
|
|
|
- @property
|
|
|
- def stack(self):
|
|
|
- """get_current_worker_task uses this to find
|
|
|
- the original task that was executed by the worker."""
|
|
|
- stack = getattr(self._local, 'stack', None)
|
|
|
- if stack is not None:
|
|
|
- return stack
|
|
|
- return []
|
|
|
-
|
|
|
- @property
|
|
|
- def top(self):
|
|
|
- """The topmost item on the stack. If the stack is empty,
|
|
|
- `None` is returned.
|
|
|
- """
|
|
|
- try:
|
|
|
- return self._local.stack[-1]
|
|
|
- except (AttributeError, IndexError):
|
|
|
- return None
|
|
|
-
|
|
|
-
|
|
|
-class LocalManager(object):
|
|
|
- """Local objects cannot manage themselves. For that you need a local
|
|
|
- manager. You can pass a local manager multiple locals or add them later
|
|
|
- by appending them to `manager.locals`. Everytime the manager cleans up
|
|
|
- it, will clean up all the data left in the locals for this context.
|
|
|
-
|
|
|
- The `ident_func` parameter can be added to override the default ident
|
|
|
- function for the wrapped locals.
|
|
|
-
|
|
|
- .. versionchanged:: 0.6.1
|
|
|
- Instead of a manager the :func:`release_local` function can be used
|
|
|
- as well.
|
|
|
-
|
|
|
- .. versionchanged:: 0.7
|
|
|
- `ident_func` was added.
|
|
|
- """
|
|
|
-
|
|
|
- def __init__(self, locals=None, ident_func=None):
|
|
|
- if locals is None:
|
|
|
- self.locals = []
|
|
|
- elif isinstance(locals, Local):
|
|
|
- self.locals = [locals]
|
|
|
- else:
|
|
|
- self.locals = list(locals)
|
|
|
- if ident_func is not None:
|
|
|
- self.ident_func = ident_func
|
|
|
- for local in self.locals:
|
|
|
- object.__setattr__(local, '__ident_func__', ident_func)
|
|
|
- else:
|
|
|
- self.ident_func = get_ident
|
|
|
-
|
|
|
- def get_ident(self):
|
|
|
- """Return the context identifier the local objects use internally for
|
|
|
- this context. You cannot override this method to change the behavior
|
|
|
- but use it to link other context local objects (such as SQLAlchemy's
|
|
|
- scoped sessions) to the Werkzeug locals.
|
|
|
-
|
|
|
- .. versionchanged:: 0.7
|
|
|
- You can pass a different ident function to the local manager that
|
|
|
- will then be propagated to all the locals passed to the
|
|
|
- constructor.
|
|
|
- """
|
|
|
- return self.ident_func()
|
|
|
-
|
|
|
- def cleanup(self):
|
|
|
- """Manually clean up the data in the locals for this context. Call
|
|
|
- this at the end of the request or use `make_middleware()`.
|
|
|
- """
|
|
|
- for local in self.locals:
|
|
|
- release_local(local)
|
|
|
-
|
|
|
- def __repr__(self):
|
|
|
- return '<{0} storages: {1}>'.format(
|
|
|
- self.__class__.__name__, len(self.locals))
|
|
|
-=======
|
|
|
->>>>>>> 3.0
|