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codeql/cpp/ql/src/external/MostlyDuplicateFunction.ql

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/**
* @deprecated
* @name Mostly duplicate function
* @description There is another function that shares a lot of the code with this one. Extract the code to a common file/superclass or delegate to improve sharing.
* @kind problem
* @id cpp/mostly-duplicate-function
* @problem.severity recommendation
* @precision medium
* @tags testability
* duplicate-code
* non-attributable
*/
import cpp
import CodeDuplication
from FunctionDeclarationEntry m, int covered, int total, FunctionDeclarationEntry other, int percent
where
duplicateStatements(m, other, covered, total) and
covered != total and
total > 5 and
covered * 100 / total = percent and
percent > 80 and
not m.getFunction().isConstructedFrom(_) and
not other.getFunction().isConstructedFrom(_) and
not duplicateMethod(m, other) and
not classLevelDuplication(m.getFunction().getDeclaringType(),
other.getFunction().getDeclaringType()) and
not fileLevelDuplication(m.getFile(), other.getFile())
select m, percent + "% of the statements in " + m.getName() + " are duplicated in $@.", other,
other.getFunction().getQualifiedName()