# cool language called sea: ::= ... ::= ... ::= ... ::= ... ::= ... ::= | '_' ::= | | '_' ::= |

::= * ::= |

::= fn '(' ,? ')' (-> )? ::=

::= | , ::= : ::= * | ::= | | | ';' ::= return ? ';' ::= ';' ::=

';' ::= |= | &= | ^= | /= | *= | %= | <<= | >>= | += | -= | = ::=

::= |

::= | ||

::= | &&

::= | '|'

::= | ^

::= | &

::= | (!= | ==)

::= | (< | > | <= | >=)

::= | (<< | >>)

::= | (+ | -)

::= | (* | / | %)

::=

::= ! - & * ::= as

::= | '(' (,?)? ')' ::= | , ::= | :

::= | | | '(' ')' |

::= (let | var) (':' )? ( = )? ::= ';' ::= | | ::= '*' 'const'?

::= bool | | | void ::= ('u' | 'i') + ::= 'f'('32' | '64') ::= |

::=

? | '0x'

? | '0b'

? | '0o'

? ::=

? | '.'

? ? | '.' ? ? ? ::= ('e' | 'E') ('-' | '+')?