Fix #6849: support irrefutable sequence match #6850
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -24,3 +24,5 @@ macros-in-same-project1 | |
| i5257.scala | ||
| i7868.scala | ||
| enum-java | ||
| zero-arity-case-class.scala | ||
| tuple-ops.scala | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| 8: Pattern Match Exhaustivity: Foo() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| sealed class Foo(val value: Int) | ||
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| object Foo { | ||
| def unapplySeq(foo: Foo): Seq[Int] = List(foo.value) | ||
| } | ||
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| def foo(x: Foo): Unit = | ||
| x match { | ||
| case Foo(x, _: _*) => assert(x == 3) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| 22: Pattern Match Exhaustivity: _: Base | ||
| 65: Pattern Match Exhaustivity: _: M |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| sealed trait Base | ||
| sealed class A(s: String) extends Base | ||
| sealed class B(val n: Int) extends Base | ||
| sealed case class C(val s: String, val n: Int) extends Base | ||
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| // boolean | ||
| object ExTrue { | ||
| def unapply(b: Base): true = b match { | ||
| case _ => true | ||
| } | ||
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| def test(b: Base) = b match { | ||
| case ExTrue() => | ||
| } | ||
| } | ||
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| object ExFalse { | ||
| def unapply(b: Base): Boolean = b match { | ||
| case _ => true | ||
| } | ||
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| def test(b: Base) = b match { // warning | ||
| case ExFalse() => | ||
| } | ||
| } | ||
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| // product | ||
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| object ExProduct { | ||
| def unapply(b: B): (Int, Int) = (b.n, b.n * b.n) | ||
| def test(b: B) = b match { | ||
| case ExProduct(x, xx) => | ||
| } | ||
| } | ||
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| // isEmpty/get | ||
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| trait Res { | ||
| def isEmpty: false = false | ||
| def get: Int | ||
| } | ||
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| object ExName { | ||
| def unapply(b: B): Res = new Res { def get: Int = b.n } | ||
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| def test(b: B) = b match { | ||
| case ExName(x) => | ||
| } | ||
| } | ||
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| sealed class M(n: Int, s: String) extends Product { | ||
| def _1: Int = n | ||
| def _2: String = s | ||
| def isEmpty: Boolean = s.size > n | ||
| def get: M = this | ||
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| def canEqual(that: Any): Boolean = true | ||
| def productArity: Int = 2 | ||
| def productElement(n: Int): Any = ??? | ||
| } | ||
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| object ExM { | ||
| def unapply(m: M): M = m | ||
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| def test(m: M) = m match { // warning | ||
| case ExM(s) => | ||
| } | ||
| } | ||
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| // some | ||
| object ExSome { | ||
| def unapply(b: B): Some[Int] = Some(b.n) | ||
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| def test(b: B) = b match { | ||
| case ExSome(x) => | ||
| } | ||
| } | ||
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| object ExSome2 { | ||
| def unapply(c: C): Some[C] = Some(c) | ||
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| def test(c: C) = c match { | ||
| case ExSome2(s, n) => | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| 13: Pattern Match Exhaustivity: Node2() | ||
| 17: Pattern Match Exhaustivity: Node1(Foo(_, _: _*)), Node1(Foo()), Node2() | ||
| 21: Pattern Match Exhaustivity: Node1(Foo()), Node2() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| final class Foo(val value: Int) | ||
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| object Foo { | ||
| def unapplySeq(foo: Foo): Seq[Int] = List(foo.value) | ||
| } | ||
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| object Test { | ||
| def main(args: Array[String]): Unit = { | ||
| (new Foo(3)) match { | ||
| case Foo(x, _: _*) => | ||
| assert(x == 3) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| object A { | ||
| def unapplySeq(a: Any): Seq[_] = "" | ||
| } | ||
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| def unapply(x: Any) = x match { case A() => } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| final class Foo(val value: Int) | ||
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| object Foo { | ||
| def unapplySeq(foo: Foo): Seq[Int] = List(foo.value) | ||
| } | ||
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| object Test { | ||
| def main(args: Array[String]): Unit = { | ||
| (new Foo(3)) match { | ||
| case Foo(x, _: _*) => | ||
| assert(x == 3) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| final class Foo(val value: Int) | ||
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| object Foo { | ||
| def unapplySeq(foo: Foo): (Int, Seq[Int]) = (foo.value, Nil) | ||
| } | ||
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| object Test { | ||
| def main(args: Array[String]): Unit = { | ||
| (new Foo(3)) match { | ||
| case Foo(x, _: _*) => | ||
| assert(x == 3) | ||
| } | ||
| } | ||
| } |
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