| // WITH_STDLIB |
| |
| fun interface Fn<T, R> { |
| fun run(s: String, i: Int, t: T): R |
| } |
| |
| class J { |
| fun runConversion(f1: Fn<String, Int>, f2: Fn<Int, String>): Int { |
| return f1.run("Bar", 1, f2.run("Foo", 42, 239)) |
| } |
| } |
| |
| fun box(): String { |
| val j = J() |
| var x = "" |
| |
| val fsi = object : Fn<String, Int> { |
| override fun run(s: String, i: Int, t: String): Int { |
| x += "$s$i$t " |
| return i |
| } |
| } |
| |
| val fis = object : Fn<Int, String> { |
| override fun run(s: String, i: Int, t: Int): String { |
| x += "$s$i$t " |
| return s |
| } |
| } |
| |
| val r1 = j.runConversion(fsi) { s, i, ti -> x += "L$s$i$ti "; "L$s"} |
| val r2 = j.runConversion({ s, i, ts -> x += "L$s$i$ts"; i }, fis) |
| |
| if (r1 != 1) return "fail r1: $r1" |
| if (r2 != 1) return "fail r2: $r2" |
| |
| if (x != "LFoo42239 Bar1LFoo Foo42239 LBar1Foo") return x |
| |
| return "OK" |
| } |