| expression | ::= | conditional ( <EOF> ) | 
| conditional | ::= | lor ( "?" conditional ":" conditional )? | 
| lor | ::= | land ( <LOR> land )* | 
| land | ::= | bor ( <LAND> bor )* | 
| bor | ::= | bxor ( <OR> bxor )* | 
| bxor | ::= | band ( <XOR> band )* | 
| band | ::= | equality ( <AND> equality )* | 
| equality | ::= | relation ( ( <EQ> | <NE> ) relation )* | 
| relation | ::= | shift ( ( <LT> | <GE> | <GT> | <LE> ) shift )* | 
| shift | ::= | sum ( ( <LS> | <RS> | <RUS> ) sum )* | 
| sum | ::= | term ( ( <PLUS> | <MINUS> ) term )* | 
| term | ::= | unary ( ( <MULTIPLY> | <DIVIDE> | <REMAINDER> ) unary )* | 
| unary | ::= | ( <BWCOMPL> | <LOGCOMPL> | <MINUS> ) unary | 
| | | "(" <ID> ( "." <ID> )* ")" element | |
| | | element | |
| element | ::= | <TRUE> | 
| | | <FALSE> | |
| | | ( ( literal | "(" conditional ")" | invocation ) ( <DOT> invocation )* ) | |
| invocation | ::= | <ID> ( "(" ( conditional ( "," conditional )* )? ")" )? ( "[" conditional "]" )* | 
| literal | ::= | <INTEGER_LITERAL> | 
| | | <FLOATING_POINT_LITERAL> | |
| | | <CHARACTER_LITERAL> | |
| | | <STRING_LITERAL> |