What's the easiest way to use reify (get an AST of) an expression in Scala?

Question

I\'m looking at alternatives to -print or javap as a way of figuring out what the compiler is doing in Scala. With the new reflection/macros librar

Answer 1

There is improve of new Scala version

scala> import scala.tools.reflect.ToolBox
import scala.tools.reflect.ToolBox

scala> import scala.reflect.runtime.{currentMirror => m}
import scala.reflect.runtime.{currentMirror=>m}

scala> val tb = m.mkToolBox()
tb: scala.tools.reflect.ToolBox[reflect.runtime.universe.type] = scala.tools.reflect.ToolBoxFactory$ToolBoxImpl@78dc5f15

scala> val tree = tb.parseExpr("1 to 3 map (_+1)")
:10: error: value parseExpr is not a member of scala.tools.reflect.ToolBox[reflect.runtime.universe.type]
       val tree = tb.parseExpr("1 to 3 map (_+1)")
                     ^

scala> val tree = tb.parse("1 to 3 map (_+1)")
tree: tb.u.Tree = 1.to(3).map(((x$1) => x$1.$plus(1)))

scala> val eval = tb.eval(tree)
eval: Any = Vector(2, 3, 4)