@Nullable
public static String getReferenceSignature(
FunctionReference functionReference, char trimKey, int equalParameterCount) {
String refSignature = functionReference.getSignature();
if (StringUtil.isEmpty(refSignature)) {
return null;
}
PsiElement[] parameters = functionReference.getParameters();
if (parameters.length != equalParameterCount) {
return null;
}
PsiElement parameter = parameters[0];
// we already have a string value
if ((parameter instanceof StringLiteralExpression)) {
String param = ((StringLiteralExpression) parameter).getContents();
if (StringUtil.isNotEmpty(param)) {
return refSignature + trimKey + param;
}
return null;
}
// whitelist here; we can also provide some more but think of performance
// Service::NAME, $this->name and Entity::CLASS;
if (parameter instanceof PhpReference
&& (parameter instanceof ClassConstantReference || parameter instanceof FieldReference)) {
String signature = ((PhpReference) parameter).getSignature();
if (StringUtil.isNotEmpty(signature)) {
return refSignature + trimKey + signature;
}
return null;
}
return null;
}
