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fix parser rule

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This commit is contained in:
Tan, Kian-ting 2023-09-29 11:31:28 +08:00
parent d3447bfe84
commit 40a1652583
1 changed files with 6 additions and 3 deletions
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9
parserRule.txt
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@ -1,5 +1,8 @@
single = "(" expr ")" | int
fac1 = applier "(" int ")" | single
applier = expr
single = "(" expr ")" | int
args = single , args | single
callees = "(" args ")" | "(" ")"
facAux = callees facAux | callees
single facAux | single
fac = single facAux | single
term = fac | fac (MUL | DIV) fac
expr = term (ADD | SUB) term