blob: 41e58e0e4d956bc868d43440765ba3063887a50b (
plain) (
blame)
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
|
import scala.reflect.macros.BlackboxContext
object Macros {
def impl_with_macros_enabled(c: BlackboxContext) = {
import c.universe._
val ru = Select(Select(Select(Select(Ident(TermName("scala")), TermName("reflect")), TermName("runtime")), TermName("package")), TermName("universe"))
val tree1 = Apply(Select(ru, TermName("reify")), List(Literal(Constant(2))))
val ttree1 = c.typeCheck(tree1, withMacrosDisabled = false)
c.Expr[String](Literal(Constant(ttree1.toString)))
}
def foo_with_macros_enabled = macro impl_with_macros_enabled
def impl_with_macros_disabled(c: BlackboxContext) = {
import c.universe._
val rupkg = c.mirror.staticModule("scala.reflect.runtime.package")
val rusym = build.selectTerm(rupkg, "universe")
val NullaryMethodType(rutpe) = rusym.typeSignature
val ru = build.newFreeTerm("ru", scala.reflect.runtime.universe)
build.setTypeSignature(ru, rutpe)
val tree2 = Apply(Select(Ident(ru), TermName("reify")), List(Literal(Constant(2))))
val ttree2 = c.typeCheck(tree2, withMacrosDisabled = true)
c.Expr[String](Literal(Constant(ttree2.toString)))
}
def foo_with_macros_disabled = macro impl_with_macros_disabled
}
|
