|
ROOT ::= EXPR*
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|
EXPR ::=
|
|
| TERM
|
|
| ASSERT
|
|
ASSERT ::= assert EXPR eq EXPR
|
|
TERM ::= FACTOR ((add|sub) FACTOR)*
|
|
FACTOR ::= USUB ((mul|div|mod) USUB)*
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|
USUB ::= sub* POW
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|
POW ::= LITERAL (pow LITERAL)?
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|
LITERAL ::=
|
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| BUILTIN
|
|
| opar EXPR cpar
|
|
BUILTIN ::=
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| int
|