Cleanup of some metaprogramming stuff, as well as adding support for

"package.nomsupath" to search for files in different locations, and
prioritizing use of "luafilesystem" over system calls.

1 files changed, 15 insertions, 0 deletions

diff --git a/core/control_flow.nom b/core/control_flow.nom
index 9aae937..0cc8f4e 100644
--- a/core/control_flow.nom
+++ b/core/control_flow.nom
@@ -383,3 +383,18 @@ compile [do %action then always %final_action] to
 # Inline thunk:
 compile [result of %body] to
     Lua value "(\(compile as: [] -> %body))()"
+
+# Recurion control flow
+using
+    compile [%var's stack] to: Lua value "stack\(%var as lua id)"
+..compile
+    parse [for %var in recursive %structure %body] as
+        with local {(%var's stack): [%structure], action: recurse % on %}
+            action [recurse %v on %x]
+                add %x to (%v's stack)
+            repeat while: (length of (%var's stack)) > 0
+                %var <- (remove 1 from (%var's stack))
+                %body
+                === next %var ==
+            === stop %var ===
+