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37 lines
1018 B
Plaintext
37 lines
1018 B
Plaintext
/**
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* @name Unused parameter
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* @description Parameter is defined but not used
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* @kind problem
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* @tags maintainability
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* @problem.severity recommendation
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* @sub-severity high
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* @precision medium
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* @id py/unused-parameter
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*/
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import python
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import Definition
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predicate unused_parameter(FunctionValue f, LocalVariable v) {
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v.isParameter() and
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v.getScope() = f.getScope() and
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not name_acceptable_for_unused_variable(v) and
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not exists(NameNode u | u.uses(v)) and
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not exists(Name inner, LocalVariable iv |
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inner.uses(iv) and iv.getId() = v.getId() and inner.getScope().getScope() = v.getScope()
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)
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}
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predicate is_abstract(FunctionValue func) {
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func.getScope().getADecorator().(Name).getId().matches("%abstract%")
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}
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from PythonFunctionValue f, LocalVariable v
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where
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v.getId() != "self" and
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unused_parameter(f, v) and
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not f.isOverridingMethod() and
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not f.isOverriddenMethod() and
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not is_abstract(f)
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select f, "The parameter '" + v.getId() + "' is never used."
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