When transforming an assignment expression, how do...

# compiler

[Caleb B]

When transforming an assignment expression, how do the different `source`s in the transformed FirStatement map to each element of the original assignment expression? Given MyClass().foo = 2, I want people to be able to ctrl+click on foo to link to MyClass#foo: String, and ctrl+click on = to link to MyClass#set-foo(Int).

The attached screenshot is what I'm returning from the FirAssignmentAltererExtension, with variableAssignment: FirVariableAssignment and targetProperty: FirPropertySymbol.

I can only identify those two source positions to modify: the call's source and the callee's source. Setting it up like shown makes both foo and the = link to the same place.

[Caleb B]

I know the sources' values can affect the original expression, because either setting the callee reference's source to variableAssignment.source or making them fake elements makes the property not have any link. I've tried different permutations of the two to no effect, so I'm wondering if there's any way to add extra metadata or something.