Allow multiple splices in macros

[nicolasstucki]

We want to be able to write macros that have several top level splices such as

inline def foo(b: Boolean): Int = {
  if (b) ${bar(true)}
  else ${bar(false)}
}
def bar(b: Boolean)(using QuoteContext): Expr[Int] = if (b) '{1} else '{0}

[nicolasstucki]

To allow macros in classes and any non-static location this is a compromise we have to do.

[Blaisorblade]

Is the restriction documented?

[nicolasstucki]

Woking on it

[nicolasstucki]

This might actually be possible dot do.