Package zeroinstall :: Package injector :: Module model :: Class ImpossibleRestriction

Class ImpossibleRestriction

 object --+    
          |    
Restriction --+
              |
             ImpossibleRestriction

A restriction that can never be met. This is used when we can't understand some other restriction.

Since: 1.13

Instance Methods

__init__(self, reason)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

bool

meets_restriction(self, impl)
Called by the solver.Solver to check whether a particular implementation is acceptable.

source code

str

__str__(self)
str(x)

source code

Inherited from Restriction: __repr__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Class Variables
Inherited from `Restriction`: `reason`

Properties
Inherited from `object`: `__class__`

Method Details

init(self, reason)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Parameters:

reason (str)

Overrides: object.__init__

meets_restriction(self, impl)

source code

Called by the solver.Solver to check whether a particular implementation is acceptable.

Parameters:

impl (Implementation)

Returns: bool

False if this implementation is not a possibility

Overrides: Restriction.meets_restriction

str(self)
(Informal representation operator)

source code

str(x)

Returns: str
Overrides: object.__str__

Class ImpossibleRestriction

__init__(self, reason) (Constructor)

meets_restriction(self, impl)

__str__(self) (Informal representation operator)

init(self, reason)
(Constructor)

str(self)
(Informal representation operator)