1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
import scala.reflect.runtime.universe._
import scala.reflect.runtime.{universe => ru}
import scala.reflect.runtime.{currentMirror => cm}
import scala.tools.reflect.ToolBox
object Test extends App {
var q = 0
var clo: Int => Int = null
def foo[T: TypeTag](ys: List[T]): Int => Int = {
val z = 1
var y = 0
val fun = reify{(x: Int) => {
y += 1
q += 1
println("q = " + q)
println("y = " + y)
x + ys.length * z + q + y
}}
if (clo == null) {
val toolbox = cm.mkToolBox()
val dyn = toolbox.eval(fun.tree)
clo = dyn.asInstanceOf[Int => Int]
}
clo
}
val fun1 = foo(List(1, 2, 3))
println("first invocation = " + fun1(10))
val fun2 = foo(List(1, 2, 3, 4))
println("second invocation = " + fun2(10))
}
|
