Merge branch 'master' of github.com:Araq/Nimrod

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/system.nim b/lib/system.nim
index b75f9022d..bfaa5eb8f 100755
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -2213,6 +2213,20 @@ proc shallow*(s: var string) {.noSideEffect, inline.} =
     var s = cast[PGenericSeq](s)
     s.reserved = s.reserved or seqShallowFlag
 
+template static*(e: expr): expr =
+  ## evaluates a given expression `e` at compile-time
+  ## even if it has side effects
+  block:
+    const res = e
+    res
+
+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 
+  ## eval expression
+  block:
+    macro payload(x: stmt): stmt = blk
+    payload()
 
 when defined(initDebugger):
   initDebugger()