070 nested tilde invocations

// TEST: Nested tilde invocations should fail
// MUST_FAIL: Nested flows (~) are not allowed inside continuations
//
// The ~ prefix starts a flow at the top level. Inside a continuation,
// you should use a bare event call instead.
//
// WRONG:  | done d |> ~inner()
// RIGHT:  | done d |> inner()

const std = @import("std");

~pub event outer {}
| done { value: i32 }

~pub event inner { x: i32 }
| done {}

~outer()
| done d |> ~inner(x: d.value)
            | done _ |> nop()

~pub event nop {}