roza/doc/grammar.bnf

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PROG ::= (INSTR (EOI INSTR)*)?
INSTR ::= EXPR
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EXPR ::= IMP
IMP ::= OR (imp OR)?
OR ::= AND (or AND)*
AND ::= TERM (and TERM)*
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TERM ::= FACTOR ((add | sub) FACTOR)*
FACTOR ::= UNOP ((mul | div | mod) UNOP)*
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UNOP ::= (add | sub | not)? POW
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POW ::= GROUP (pow GROUP)?
GROUP ::= BASE | opar EXPR cpar
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BASE ::= int | bool