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-rw-r--r--bnftest18
1 files changed, 18 insertions, 0 deletions
diff --git a/bnftest b/bnftest
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index 0000000..7e61b1a
--- /dev/null
+++ b/bnftest
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1tokens = tokPlus tokMinus tokMult tokDivide tokOpenParen tokCloseParen
2 tokEquals tokNumber;
3
4input: input line
5 |
6 ;
7
8line: expr tokEquals {print}
9 ;
10
11expr: expr tokPlus expr {add}
12 | expr tokMinus expr {subtract}
13 | expr tokMult expr {multiply}
14 | expr tokDivide expr {divide}
15 | tokOpenParen expr tokCloseParen
16 | [tokNumber]
17 ;
18