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codeql/javascript/ql/src/JSDoc/UndocumentedParameter.ql
2019-01-07 10:15:45 +00:00

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/**
* @name Undocumented parameter
* @description If some parameters of a function are documented by JSDoc 'param' tags while others
* are not, this may indicate badly maintained code.
* @kind problem
* @problem.severity recommendation
* @id js/jsdoc/missing-parameter
* @tags maintainability
* readability
* documentation
* @precision medium
*/
import javascript
from Function f, Parameter parm, Variable v, JSDoc doc
where
parm = f.getAParameter() and
doc = f.getDocumentation() and
v = parm.getAVariable() and
// at least one parameter is documented
exists(doc.getATag().(JSDocParamTag).getDocumentedParameter()) and
// but v is not
not doc.getATag().(JSDocParamTag).getDocumentedParameter() = v and
// don't report a violation in ambiguous cases
strictcount(JSDoc d | d = f.getDocumentation() and d.getATag() instanceof JSDocParamTag) = 1
select parm, "Parameter " + v.getName() + " is not documented."