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pluginsclion

Get parameter name in Clion plugin

I am developing a plugin for Clion (C++) that needs to access caller parameter name, e.g. if a function is declared:

void fun(int a);

and called

fun(42);

when the intent is invoked on 42 PsiElement it should get the corresponding parameter name, "a" in this case.

In a similar plugin for Intellij (Java), I get the parameter name with PsiCallExpression.resolveMethod() which contains the list of parameters. However, I cannot figure out how to do this in a Clion plugin. I can get a reference of a corresponding OCCallExpression, but it does not seem to contain a reference to the declared function. I tried to play around with ReferencesSearch.search(), but it did not find the declaration of the function.

At the same time, the IDE itself displays all the parameter name hints: parameter hints in Clion so I suppose it must be possible.

How can I get the parameter name for a given caller argument expression?

Solution

  • Please, look at InlayParameterHintsExtension.forLanguage(OCLanguage.getInstance()) and InlayParameterHintsProvider.getParameterHints