X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=parserRule.txt;h=8b2b5de075d94f9a7d8245a3f9a8fbee3d07c7ef;hb=1a7598fd6e01515661591a41320a63451cb82d5f;hp=0bce539eb9b0fb5d2d3389521d2f5535439e7b5a;hpb=5f0943539e27b3e0d08e70559ea39017e6df330e;p=clo

diff --git a/parserRule.txt b/parserRule.txt
index 0bce539..8b2b5de 100644
--- a/parserRule.txt
+++ b/parserRule.txt
@@ -1 +1,5 @@
-expr = int | int add int # expr1 and #expr2
\ No newline at end of file
+single = "(" expr ")" | int 
+fac1 = applier "(" int ")"  | single
+applier = expr
+term = fac | fac (MUL | DIV) fac
+expr = term (ADD | SUB) term