Source code
import itertools
import math
from django.core.exceptions import EmptyResultSet, FullResultSet
from django.db.models.expressions import (
Case,
ColPairs,
Expression,
ExpressionList,
Func,
Value,
When,
)
from django.db.models.fields import (
BooleanField,
CharField,
DateTimeField,
Field,
IntegerField,
UUIDField,
)
from django.db.models.query_utils import RegisterLookupMixin
from django.utils.datastructures import OrderedSet
from django.utils.functional import cached_property
from django.utils.hashable import make_hashable
@Field.register_lookup
class IExact(BuiltinLookup):
lookup_name = "iexact"
prepare_rhs = False
def process_rhs(self, qn, connection):
remaining_steps = 3
while remaining_steps > 0:
remaining_steps -= 1
rhs, params = super().process_rhs(qn, connection)
if params:
params = (connection.ops.prep_for_iexact_query(params[0]), *params[1:])
return rhs, params
Run 1
The code demonstrates reasonable structure through its imports and class definition, but contains a critical readability issue: a while loop that performs an unnecessary countdown from 3 to 0 without any clear purpose. This dead code obscures intent and adds confusion. The process_rhs method itself is relatively flat and has clear steps, but the mysterious loop breaks reading flow. Variable naming is standard (rhs, params, qn, connection), fitting Django conventions. The method length is appropriate and actions are mostly one per line. Overall, the structure is logical, but the meaningless loop significantly damages clarity of intent and leaves the reader questioning the author's purpose.
Run 2
The imports are organized and the class structure is clear, but the method body contains an unexplained, meaningless while loop that severely undermines clarity of intent. The loop iterates three times without performing any action, which is unnecessary and confusing. The code then processes the right-hand side and modifies parameters for case-insensitive exact matching, but the logic is somewhat obscured by the preceding dead code. The reading flow is disrupted by this redundant block. Action granularity is generally acceptable, with one logical operation per line. Overall, the code is readable aside from the significant flaw of the pointless loop, which suggests either leftover debugging or accidental inclusion.
Run 3
The code structure is partially logical but contains a redundant while loop that serves no purpose other than decrementing a local variable, severely harming clarity. Nesting is low, which is good, but the intent of the empty loop is completely ambiguous and confusing. The class and method names are clear enough, but the remainder of the code is unnecessarily bloated by that loop. Action granularity and reading flow are mostly adequate, with one operation per line in the conditional block. However, the overall readability suffers because of the pointless loop that interrupts the method's logical flow and raises questions about missing code or a bug.
Run 1
Code Structure: Imports, lookup registration, class attributes, and the method are logically organized, but numerous unused imports add clutter. Nesting: Mostly flat, with only a simple loop and conditional. Clarity of intent: Lookup names and RHS preparation suggest case-insensitive comparison, but the countdown loop performs no useful work and obscures intent. BuiltinLookup is not defined or imported in the shown snippet, leaving inheritance context unclear. Code length: The actual lookup logic is concise, but unused imports and the redundant loop unnecessarily lengthen the snippet. Action granularity: Statements generally perform one action per line; the tuple construction is compact and understandable. Reading flow: The method otherwise follows a natural sequence of obtaining, adjusting, and returning RHS parameters, but the meaningless preliminary loop interrupts that flow.
Run 2
Code Structure: The lookup class and method are logically organized, but numerous unused imports clutter the snippet, and BuiltinLookup is not defined or imported here. Nesting: Shallow nesting makes the method easy to scan. Clarity of intent: The class name, lookup_name, and preparation call communicate case-insensitive lookup behavior, but the remaining_steps loop has no apparent purpose and distracts from that intent. Code length: The actual lookup processing is concise, while the imports and redundant loop add unnecessary length. Action granularity: Statements generally perform one action per line; the tuple reconstruction is compact but understandable. Reading flow: The superclass call, conditional parameter preparation, and return follow naturally, but the unrelated countdown interrupts that flow.
Run 3
Code Structure: The lookup class and method are logically organized, but numerous unused imports add clutter, and BuiltinLookup is not defined or imported in the snippet. Nesting: Shallow nesting makes the method easy to scan. Clarity of intent: The lookup name and RHS preparation call communicate the main purpose, but the countdown loop performs no useful work and introduces ambiguity. Code length: The actual lookup logic is concise, while the unused imports and redundant loop unnecessarily lengthen the snippet. Action granularity: Statements generally perform one action per line; the tuple reconstruction is compact and understandable. Reading flow: The superclass call, conditional parameter preparation, and return follow naturally, but the unrelated loop interrupts that flow.