Package zeroinstall :: Package injector :: Module model :: Class VersionExpressionRestriction

Class VersionExpressionRestriction

 object --+    
          |    
Restriction --+
              |
             VersionExpressionRestriction

Only versions for which the expression is true are acceptable.

Since: 1.13

Instance Methods

__init__(self, expr)
Constructor.

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, expr)
(Constructor)

source code

Constructor.

Parameters:

expr (str) - the expression, in the form "2.6..!3 | 3.2.2.."

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 VersionExpressionRestriction

__init__(self, expr) (Constructor)

meets_restriction(self, impl)

__str__(self) (Informal representation operator)

init(self, expr)
(Constructor)

str(self)
(Informal representation operator)