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authorMike Buland <eichlan@xagasoft.com>2010-10-18 04:38:19 +0000
committerMike Buland <eichlan@xagasoft.com>2010-10-18 04:38:19 +0000
commit78463c30031a478936b21168a6fc93ae6eeaaeb9 (patch)
tree2216344a91f23088dcb4cf93492802c75577fad1 /bnftest
parent00ecd458ced768b3b8752cdd421a22244b7adc01 (diff)
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Several of these new files will go away, but I didn't want to lose them for now.
The parser works! The parser compiler works! It makes parsers! Now we just have to implement post processing, token lookup tables, and storage.
Diffstat (limited to 'bnftest')
-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
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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