#name: resolved self-reference cycles with disjunction with defaults
#evalPartial
-- in.cue --
// The disjunction in xa could be resolved, but as disjunctions
// are not resolved for expression, it remains unresolved.
xa1: (xa2 & 8) | *(xa4 & 9)
xa2: xa3 + 2
xa3: 6 & xa1-2
xa4: xa2 + 2

// TODO(inline): make positions work here.
xb1: *(xb2 & 8) | (xb4 & 9)
xb2: xb3 + 2
xb3: *(6 & (xb1 - 2)) | (xb4 & 9)
xb4: xb2 + 2

// Another variant with more disjunctions. xc1 remains with two
// possibilities. Technically, only the first value is valid.
// However, to fully determine that, all options of the remaining
// disjunction will have to be evaluated algebraically, which is
// not done.
xc1: *(xc2 & 8) | (xc4 & 9) | (xc5 & 9)
xc2: xc3 + 2
xc3: 6 & xc1-2
xc4: xc2 + 1
xc5: xc2 + 2

// The above is resolved by setting xd1 explicitly.
xd1: *(xd2 & 8) | xd4 & 9 | xd5 & 9
xd2: xd3 + 2
xd3: 6 & xd1-2
xd4: xd2 + 1
xd5: xd2 + 2

// The above is resolved by setting xd1 explicitly to the wrong
// value, resulting in an error.
xe1: *(xe2 & 8) | xe4 & 9 | xe5 & 9
xe2: xe3 + 2
xe3: 6 & xe1-2
xe4: xe2 + 1
xe5: xe2 + 2
xe1: 9

z1: *(z2 + 1) | z3+5
z2: z3 + 2
z3: z1 - 3
z3: 8
-- out/compile --
--- in.cue
{
  xa1: ((〈0;xa2〉 & 8)|*(〈0;xa4〉 & 9))
  xa2: (〈0;xa3〉 + 2)
  xa3: (6 & (〈0;xa1〉 - 2))
  xa4: (〈0;xa2〉 + 2)
  xb1: (*(〈0;xb2〉 & 8)|(〈0;xb4〉 & 9))
  xb2: (〈0;xb3〉 + 2)
  xb3: (*(6 & (〈0;xb1〉 - 2))|(〈0;xb4〉 & 9))
  xb4: (〈0;xb2〉 + 2)
  xc1: (*(〈0;xc2〉 & 8)|(〈0;xc4〉 & 9)|(〈0;xc5〉 & 9))
  xc2: (〈0;xc3〉 + 2)
  xc3: (6 & (〈0;xc1〉 - 2))
  xc4: (〈0;xc2〉 + 1)
  xc5: (〈0;xc2〉 + 2)
  xd1: (*(〈0;xd2〉 & 8)|(〈0;xd4〉 & 9)|(〈0;xd5〉 & 9))
  xd2: (〈0;xd3〉 + 2)
  xd3: (6 & (〈0;xd1〉 - 2))
  xd4: (〈0;xd2〉 + 1)
  xd5: (〈0;xd2〉 + 2)
  xe1: (*(〈0;xe2〉 & 8)|(〈0;xe4〉 & 9)|(〈0;xe5〉 & 9))
  xe2: (〈0;xe3〉 + 2)
  xe3: (6 & (〈0;xe1〉 - 2))
  xe4: (〈0;xe2〉 + 1)
  xe5: (〈0;xe2〉 + 2)
  xe1: 9
  z1: (*(〈0;z2〉 + 1)|(〈0;z3〉 + 5))
  z2: (〈0;z3〉 + 2)
  z3: (〈0;z1〉 - 3)
  z3: 8
}
