clean separation of PNimrodNode and tyExpr

lib/core/macros.nim

@@ -87,10 +87,6 @@ type
     ## represents a Nimrod *symbol* in the compiler; a *symbol* is a looked-up
     ## *ident*.
   
-  TNimrodNode {.final.} = object
-  PNimrodNode* {.magic: "PNimrodNode".} = ref TNimrodNode
-    ## represents a Nimrod AST node. Macros operate on this type.
-
 const
   nnkLiterals* = {nnkCharLit..nnkNilLit}
   nnkCallKinds* = {nnkCall, nnkInfix, nnkPrefix, nnkPostfix, nnkCommand,

lib/system.nim

@@ -2220,6 +2220,11 @@ proc shallow*(s: var string) {.noSideEffect, inline.} =
 #    const res = e
 #    res
 
+type
+  TNimrodNode {.final.} = object
+  PNimrodNode* {.magic: "PNimrodNode".} = ref TNimrodNode
+    ## represents a Nimrod AST node. Macros operate on this type.
+
 template eval*(blk: stmt): stmt =
   ## executes a block of code at compile time just as if it was a macro
   ## optonally, the block can return an AST tree that will replace the