Added a calculator test program.

2026-05-26 19:34:04 +10:00
parent 2d90caa285
commit 89354af95e
6 changed files with 331 additions and 0 deletions
@@ -0,0 +1,36 @@
+syntax_ids:
+add_expr
+sub_expr
+mul_expr
+div_expr
+number_expr
+group_expr
+term
+expr
+
+rules:
+
+expr
+: expr plus term
+=> new_node add_expr $0 $1 $2
+: expr minus term
+=> new_node sub_expr $0 $1 $2
+: term
+=> new_node expr $0
+;
+
+term
+: term multiply factor
+=> new_node mul_expr $0 $1 $2
+: term divide factor
+=> new_node div_expr $0 $1 $2
+: factor
+=> new_node term $0
+;
+
+factor
+: number
+=> new_node number_expr $0
+: lparen expr rparen
+=> new_node group_expr $1
+;