Warning has a fileURI which may or may not be different to where the CompiledContract is implemented, so the Warning's fileURI should be prioritised. If it is None then use the fileURI in Ast.Contract's SourceIndex. If both are None then find the fileURI where the Ast.Contract's type name is implemented.
Warninghas afileURIwhich may or may not be different to where theCompiledContractis implemented, so theWarning'sfileURIshould be prioritised. If it isNonethen use thefileURIinAst.Contract'sSourceIndex. If both areNonethen find thefileURIwhere theAst.Contract's type name is implemented.For details see the attached issue 1096.