SI-6489 parsing in macros should provide proper positions

1. macro parsing doesn't use toolbox any more but calls parser directly

2. in order for this to work parser has to be refactored to limit
   usage of currentUnit and rewire it into parser's local unit
   method which might use currentUnit for some parsers but will
   user proper unit for UnitParser

3. similar change has to be done to make compilation unit's
   reporter overridable

2 files changed, 20 insertions, 0 deletions

diff --git a/test/files/run/macro-parse-position-malformed/Impls_Macros_1.scala b/test/files/run/macro-parse-position-malformed/Impls_Macros_1.scala
new file mode 100644
index 0000000000..2417eb6897
--- /dev/null
+++ b/test/files/run/macro-parse-position-malformed/Impls_Macros_1.scala
@@ -0,0 +1,17 @@
+import scala.language.experimental.macros
+import scala.reflect.macros.{Context => Ctx, ParseException}
+
+object Macros {
+  def impl(c: Ctx)() = {
+    import c.universe._
+    val out = try {
+      c.parse("foo(bar")
+      "didn't fail"
+    } catch {
+      case e: ParseException =>
+        s"failed with '${e.pos}' position and '${e.msg}' message"
+    }
+    c.Expr[String](Literal(Constant(out)))
+  }
+  def foo(): String = macro impl
+}
\ No newline at end of file
diff --git a/test/files/run/macro-parse-position-malformed/Test_2.scala b/test/files/run/macro-parse-position-malformed/Test_2.scala
new file mode 100644
index 0000000000..cff569bd81
--- /dev/null
+++ b/test/files/run/macro-parse-position-malformed/Test_2.scala
@@ -0,0 +1,3 @@
+object Test extends App {
+  println(Macros.foo)
+}