// Quantifier combinators for compositional expectations
// all(), any(), none() wrap multiple assertions into quantified groups.

import type { FluentAssertion, FluentRelation } from './fluent.js'

export type ComposableAssertion = FluentAssertion | FluentRelation

export interface QuantifiedGroup {
  kind: 'all' | 'any' | 'none'
  assertions: ComposableAssertion[]
}

/** Every assertion in the group must hold. */
export function all(...assertions: ComposableAssertion[]): QuantifiedGroup {
  return { kind: 'all', assertions }
}

/** At least one assertion in the group must hold. */
export function any(...assertions: ComposableAssertion[]): QuantifiedGroup {
  return { kind: 'any', assertions }
}

/** No assertion in the group may hold. */
export function none(...assertions: ComposableAssertion[]): QuantifiedGroup {
  return { kind: 'none', assertions }
}