add statement support

2020-09-29 23:30:58 +05:30
parent 2b36e74ff5
commit 02505f273e
12 changed files with 251 additions and 88 deletions
--- a/grammar/bf.g4
+++ b/grammar/bf.g4
@@ -1,9 +1,19 @@
 grammar bf;

-program: statements;
+program:
+    statements* EOF;

-statements: INC | DEC | INPUT|OUTPUT;
+statements:
+    statement+;
+    
+statement:
+      INC
+    | DEC
+    | INPUT
+    | OUTPUT
+    ;

+NEWLINE: '\n' -> skip;
 COMMENT: '\\\\.*?\\\\' -> skip;
 INPUT: '?';
 OUTPUT: '.';