ExpressionEntryCouldContinue is a helper for terraform console's interactive mode which serves as a heuristic for whether it seems like the author might be trying to split an expression over multiple lines of input.

FormatValue formats a value in a way that resembles Terraform language syntax and uses the type conversion functions where necessary to indicate exactly what type it is given, so that equality test failures can be quickly understood.

Session represents the state for a single REPL session.