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Make sure isEmpty's type isn't constant folded
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| [[syntax trees at end of patmat]] // newSource1.scala | ||
| package <empty> { | ||
| object A extends scala.AnyRef { | ||
| def <init>(): A.type = { | ||
| A.super.<init>(); | ||
| () | ||
| }; | ||
| def unapplySeq(a: Int): Wrap = new Wrap(a) | ||
| }; | ||
| class T extends scala.AnyRef { | ||
| def <init>(): T = { | ||
| T.super.<init>(); | ||
| () | ||
| }; | ||
| def t: Any = { | ||
| case <synthetic> val x1: Int(2) = 2; | ||
| case5(){ | ||
| <synthetic> val o7: Wrap = A.unapplySeq(x1); | ||
| if (o7.isEmpty.unary_!) | ||
| { | ||
| val xs: Seq[Int] = o7.get.toSeq; | ||
| matchEnd4(xs) | ||
| } | ||
| else | ||
| case6() | ||
| }; | ||
| case6(){ | ||
| matchEnd4("other") | ||
| }; | ||
| matchEnd4(x: Any){ | ||
| x | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| import scala.tools.partest._ | ||
|
|
||
| object Test extends DirectTest { | ||
| def depCode = | ||
| """class Wrap(private val a: Int) extends AnyVal { | ||
| | def isEmpty: false = { println("confirm seq isEmpty method doesn't get elided"); false } | ||
| | def get = this | ||
| | def lengthCompare(len: Int) = Integer.compare(1, len) | ||
| | def apply(i: Int) = if (i == 0) a else Nil(i) | ||
| | def drop(n: Int): scala.Seq[Int] = if (n == 0) toSeq else Nil | ||
| | def toSeq: scala.Seq[Int] = List(a) | ||
| |} | ||
| """.stripMargin | ||
|
|
||
| override def code = | ||
| """object A { | ||
| | def unapplySeq(a: Int) = new Wrap(a) | ||
| |} | ||
| |class T { | ||
| | def t: Any = 2 match { | ||
| | case A(xs @ _*) => xs | ||
| | case _ => "other" | ||
| | } | ||
| |} | ||
| """.stripMargin | ||
|
|
||
| def show(): Unit = Console.withErr(System.out) { | ||
| compileString(newCompiler("-usejavacp"))(depCode) | ||
| compileString(newCompiler("-usejavacp", "-cp", testOutput.path, "-Vprint:patmat"))(code) | ||
| } | ||
| } |
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