| package test |
| |
| public class Data() |
| |
| public class Input(val d: Data) : Closeable { |
| public fun data() : Int = 100 |
| } |
| public class Output(val d: Data) : Closeable { |
| public fun doOutput(data: Int): Int = data |
| } |
| |
| public interface Closeable { |
| open public fun close() {} |
| } |
| |
| public inline fun <T: Closeable, R> T.use(block: (T)-> R) : R { |
| var closed = false |
| try { |
| return block(this) |
| } catch (e: Exception) { |
| closed = true |
| try { |
| this.close() |
| } catch (closeException: Exception) { |
| |
| } |
| throw e |
| } finally { |
| if (!closed) { |
| this.close() |
| } |
| } |
| } |
| |
| |
| public fun Input.copyTo(output: Output, size: Int): Long { |
| return output.doOutput(this.data()).toLong() |
| } |