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Choose from a strictly smaller k.
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@ -78,18 +78,14 @@ extension UnannotatedTerm: Arbitrary {
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static func arbitrary(k: Int) -> Gen<UnannotatedTerm> {
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let symbol: Gen<String> = Gen<Int>.choose((0, 15)).fmap { "_\($0)" }
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let leaf: Gen<Term> = symbol.fmap { Term((), .Leaf($0)) }
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let indexed: Gen<Term> = Gen.sized { n in
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Gen<Int>.choose((0, n)).bind { n in
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sequence((0..<n).map { _ in arbitrary(k - 1) }).fmap {
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Term((), .Indexed($0.map { $0.term }))
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}
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let indexed: Gen<Term> = Gen<Int>.choose((0, k)).bind { n in
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sequence((0..<n).map { _ in arbitrary(k - 1) }).fmap {
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Term((), .Indexed($0.map { $0.term }))
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}
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}
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let keyed: Gen<Term> = Gen.sized { n in
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Gen<Int>.choose((0, n)).bind { n in
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sequence((0..<n).map { _ in symbol.bind { key in Gen.pure(()).bind { arbitrary(k - 1) }.fmap { (key, $0.term) } } }).fmap {
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Term((), .Keyed(Dictionary(elements: $0)))
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}
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let keyed: Gen<Term> = Gen<Int>.choose((0, k)).bind { n in
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sequence((0..<n).map { _ in symbol.bind { key in Gen.pure(()).bind { arbitrary(k - 1) }.fmap { (key, $0.term) } } }).fmap {
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Term((), .Keyed(Dictionary(elements: $0)))
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}
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}
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return Gen.oneOf([
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