macro engine refactoring

Macro impl bindings now store more information in signatures.
Previously it was a flattened List[Int] corresponding to flattened paramss,
now it's List[List[Int]] to preserve the lengths of parameter lists.
Also now we distinguish between c.Expr parameters and others.

Previously actual and reference macro signatures were represented as
tuples of vparamss, rets, and sometimes tparams. Now they are all
abstracted behind MacroImplSig.

Finally this patch provides better error messages in cases of
argsc <-> paramsc and argc <-> paramc mismatches.

2 files changed, 95 insertions, 0 deletions

diff --git a/test/files/neg/t7157/Impls_Macros_1.scala b/test/files/neg/t7157/Impls_Macros_1.scala
new file mode 100644
index 0000000000..09f423fbab
--- /dev/null
+++ b/test/files/neg/t7157/Impls_Macros_1.scala
@@ -0,0 +1,32 @@
+import scala.reflect.macros.Context
+import language.experimental.macros
+
+object Macros {
+  def impl1_0_0(c: Context)() = c.literalUnit
+  def impl1_1_1(c: Context)(x: c.Expr[Int]) = c.literalUnit
+  def impl1_2_2(c: Context)(x: c.Expr[Int], y: c.Expr[Int]) = c.literalUnit
+  def m1_0_0() = macro impl1_0_0
+  def m1_1_1(x: Int) = macro impl1_1_1
+  def m1_2_2(x: Int, y: Int) = macro impl1_2_2
+
+  def impl1_0_inf(c: Context)(x: c.Expr[Int]*) = c.literalUnit
+  def impl1_1_inf(c: Context)(x: c.Expr[Int], y: c.Expr[Int]*) = c.literalUnit
+  def impl1_2_inf(c: Context)(x: c.Expr[Int], y: c.Expr[Int], z: c.Expr[Int]*) = c.literalUnit
+  def m1_0_inf(x: Int*) = macro impl1_0_inf
+  def m1_1_inf(x: Int, y: Int*) = macro impl1_1_inf
+  def m1_2_inf(x: Int, y: Int, z: Int*) = macro impl1_2_inf
+
+  def impl2_0_0(c: Context)()() = c.literalUnit
+  def impl2_1_1(c: Context)()(x: c.Expr[Int]) = c.literalUnit
+  def impl2_2_2(c: Context)()(x: c.Expr[Int], y: c.Expr[Int]) = c.literalUnit
+  def m2_0_0()() = macro impl2_0_0
+  def m2_1_1()(x: Int) = macro impl2_1_1
+  def m2_2_2()(x: Int, y: Int) = macro impl2_2_2
+
+  def impl2_0_inf(c: Context)()(x: c.Expr[Int]*) = c.literalUnit
+  def impl2_1_inf(c: Context)()(x: c.Expr[Int], y: c.Expr[Int]*) = c.literalUnit
+  def impl2_2_inf(c: Context)()(x: c.Expr[Int], y: c.Expr[Int], z: c.Expr[Int]*) = c.literalUnit
+  def m2_0_inf()(x: Int*) = macro impl2_0_inf
+  def m2_1_inf()(x: Int, y: Int*) = macro impl2_1_inf
+  def m2_2_inf()(x: Int, y: Int, z: Int*) = macro impl2_2_inf
+}
\ No newline at end of file
diff --git a/test/files/neg/t7157/Test_2.scala b/test/files/neg/t7157/Test_2.scala
new file mode 100644
index 0000000000..45a6026399
--- /dev/null
+++ b/test/files/neg/t7157/Test_2.scala
@@ -0,0 +1,63 @@
+import Macros._
+
+object Test extends App {
+  m1_0_0()
+  m1_0_0(1)
+  m1_0_0(1, 2)
+  m1_0_0(1, 2, 3)
+
+  m1_1_1()
+  m1_1_1(1)
+  m1_1_1(1, 2)
+  m1_1_1(1, 2, 3)
+
+  m1_2_2()
+  m1_2_2(1)
+  m1_2_2(1, 2)
+  m1_2_2(1, 2, 3)
+
+  m1_0_inf()
+  m1_0_inf(1)
+  m1_0_inf(1, 2)
+  m1_0_inf(1, 2, 3)
+
+  m1_1_inf()
+  m1_1_inf(1)
+  m1_1_inf(1, 2)
+  m1_1_inf(1, 2, 3)
+
+  m1_2_inf()
+  m1_2_inf(1)
+  m1_2_inf(1, 2)
+  m1_2_inf(1, 2, 3)
+
+  m2_0_0()()
+  m2_0_0()(1)
+  m2_0_0()(1, 2)
+  m2_0_0()(1, 2, 3)
+
+  m2_1_1()()
+  m2_1_1()(1)
+  m2_1_1()(1, 2)
+  m2_1_1()(1, 2, 3)
+
+  m2_2_2()()
+  m2_2_2()(1)
+  m2_2_2()(1, 2)
+  m2_2_2()(1, 2, 3)
+
+  m2_0_inf()()
+  m2_0_inf()(1)
+  m2_0_inf()(1, 2)
+  m2_0_inf()(1, 2, 3)
+
+  m2_1_inf()()
+  m2_1_inf()(1)
+  m2_1_inf()(1, 2)
+  m2_1_inf()(1, 2, 3)
+
+  m2_2_inf()()
+  m2_2_inf()(1)
+  m2_2_inf()(1, 2)
+  m2_2_inf()(1, 2, 3)
+}
\ No newline at end of file