Operator Precedence
Release 1.0 - ...
This table lists the operator precedence as applied by the expression evaluator.
Operators in the same cell of the table have equal precedence and are evaluated in the given order in an expression unless explicitly forced by parentheses.
| Operator | Alias | Meaning | Example |
|---|---|---|---|
| () $ |
Function call (vipermethod) Get buffer value, alias for buffer.get() |
string.toupper("you") => YOU $varname is equivalent to buffer.get(varname) | |
| ~ ! – + |
One's complement Logical not Unary minus Unary plus |
~10 => -11 !true => false -1 => -1 +1 => 1 | |
| * / % |
Multiplication Division Modulus |
2 * 3 => 6 6 / 3 => 2 6 % 4 => 2 | |
| + – |
Addition Subtraction |
1 + 2 => 3 3 - 2 => 1 | |
| << >> |
Left shift Right shift |
1 << 2 => 4 8 >> 3 => 1 | |
| < > <= >= |
LT GT LTE GTE |
Less than Greater than Less than or equal to Greater than or equal to |
|
| == != |
EQ NEQ |
Equality Inequality |
|
| & | Bitwise AND | 3 & 6 => 2 | |
| ^ | Bitwise exclusive OR | 3 ^ 6 => 5 | |
| | | Bitwise inclusive OR | 3 | 6 => 7 | |
| && | AND | Logical AND | 1 && 2 => true |
| || | OR | Logical OR | 1 || 0 => true |
| ; | Statement separator | buffer.set(a,2); buffer.get(a) * 2 => 4 |
The associativity of the operators is right to left for the unary operator and left to right for all other operators.