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36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
/**
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* @name `__del__` is called explicitly
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* @description The `__del__` special method is called by the virtual machine when an object is being finalized. It should not be called explicitly.
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* @kind problem
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* @tags quality
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* reliability
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* correctness
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* @problem.severity warning
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* @sub-severity low
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* @precision very-high
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* @id py/explicit-call-to-delete
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*/
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import python
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class DelCall extends Call {
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DelCall() { this.getFunc().(Attribute).getName() = "__del__" }
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predicate isSuperCall() {
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exists(Function f | f = this.getScope() and f.getName() = "__del__" |
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// We pass in `self` as the first argument...
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f.getArg(0).asName().getVariable() = this.getArg(0).(Name).getVariable()
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or
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// ... or the call is of the form `super(Type, self).__del__()`, or the equivalent
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// Python 3: `super().__del__()`.
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exists(Call superCall | superCall = this.getFunc().(Attribute).getObject() |
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superCall.getFunc().(Name).getId() = "super"
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)
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)
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}
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}
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from DelCall del
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where not del.isSuperCall()
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select del, "The __del__ special method is called explicitly."
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