added (debug) to the repl for noise on-demand

1 files changed, 14 insertions, 8 deletions

diff --git a/repl.py b/repl.py
index 831d57d..2846d33 100644
--- a/repl.py
+++ b/repl.py
@@ -2,28 +2,34 @@ from lexer import lex
 from parser import parse
 from interpreter import interpret
 
-def _get_debug():
-    return True
+prev_lexed = None
+prev_parsed = None
 
 def main():
     print("### neb :)(:")
     print("version: < 0")
     idx = 1
+    prev_idx = 0
     while True:
         inp = input(f"#{idx}> ")
         if len(inp.strip()) == 0:
             continue
         try:
+            if inp.strip() == "(debug)":
+                if prev_lexed is not None:
+                    acc = " ".join([f"{l}" for l in prev_lexed])
+                    print(f" - LEX:  {acc}")
+                if prev_parsed is not None:
+                    acc = " ".join([f"{p}" for p in prev_parsed])
+                    print(f" - PARSE:  {acc}")
+                continue
             lexed = lex(inp)
-            if _get_debug():
-                acc = " ".join([f"{l}" for l in lexed])
-                print(f" - LEX:  {acc}")
+            prev_lexed = lexed
             parsed = parse(lexed)
-            if _get_debug():
-                acc = " ".join([f"{p}" for p in parsed])
-                print(f" - PARSE:  {acc}")
+            prev_parsed = parsed
             inter = interpret(parsed)
             print(f"=> {inter}")
+            prev_idx = idx
             idx += 1
         except Exception as e:
             print(f"panic! {e}")