Worksheet using scala reflexion toolbox

worksheet.scala

val code = """def html[X, Y](xs: List[(X, Y)]) = xs.toString
val a = List((1,1))
a
val b = List((1,1))
b"""

val tree = tb.parse(code)
val identifiers = tree.children.collect{ case i @ Ident(_) => i }
val instrumentation = identifiers.map{ i => 
	Apply(Select(Ident("scala"), TermName("Tuple2")),
		List(Literal(Constant(i.pos.line)), 
			Apply(Ident(TermName("html")), List(i))
		)
	)
}
val result = Apply(Ident(TermName("List")), instrumentation)
tb.eval(Block(tree.children, result)).asInstanceOf[List[(Int, Any)]]