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HashedSubscriptableType.__getitem__()   A
last analyzed

↳ Parent: nptyping._hashed_subscriptable_type

Complexity

Conditions 2

Size

Total Lines 9
Code Lines 7

Duplication

Lines 5
Ratio 55.56 %

Importance

Changes 0
Metric Value
cc 2
eloc 7
nop 2
dl 5
loc 9
rs 10
c 0
b 0
f 0
1 
from typing import Any
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from typish import SubscriptableType

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                View Code Duplication
                
class HashedSubscriptableType(SubscriptableType):

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    An extension of SubscriptableType that caches the __getitem__ to ensure an

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    identical result per set of parameters.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    _cache = {}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    def __getitem__(cls, item: Any) -> Any:

            


            
                                                        
            
                                    
            
            

                
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        # Take the item's class name into account to distinguish between

            


            
                                                        
            
                                    
            
            

                
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        # e.g. ints and floats.

            


            
                                                        
            
                                    
            
            

                
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        hashed = hash('{}{}{}'.format(

            


            
                                                        
            
                                    
            
            

                
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            cls.__name__, item.__class__.__name__, item))

            


            
                                                        
            
                                    
            
            

                
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        if hashed not in cls._cache:

            


            
                                                        
            
                                    
            
            

                
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            cls._cache[hashed] = SubscriptableType.__getitem__(cls, item)

            


            
                                                        
            
                                    
            
            

                
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        result = cls._cache[hashed]

            


            
                                                        
            
                                    
            
            

                
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        return result

            


            
                                                        
            
                                    
            
            

                
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