1. Operator priority
The following table present the precedence of the operators, and literals. This table presents the priority of the operators, but does not specify how the operators are used, and their specific syntax. For example, there are unary operators, and binary operators, that require respectively one and two operands, but that is not specified in the table.
| Priority | Description | Operators | Comments |
|---|---|---|---|
| 0 | Assignement operators | = /= -= += *= %= ~= <<= >>= |
|
| 1 | Logical Or | || |
|
| 2 | Logical And | && |
|
| 3 | Comparison operators | < > <= >= != == of is in !of !is !in |
Cannot be chained |
| 4 | Range operators | .. ... |
|
| 5 | Bitshift operators | << >> |
|
| 6 | Bit operators | | ^ & |
Warning there is no priority over these operators (or and and) |
| 7 | Additive operators | + ~ - |
~ is the concatenation operator |
| 8 | Multiplicative operators | * / % |
|
| 9 | Power operator | ^^ |
|
| 10 | Unary operators | - & * ! |
Always prefixed |
| 11 | Option operator | ? |
Always postfixed |
| 12 | Keyword and Scope operators | { if while assert break do for match let return fn dg loop throw __version __pragma with atomic |
This operators have a specific syntax that must be closed, to be completed |
| 13 | Postfix operators | . ( [ :. #[ #( #{ |
( [ #{ #[ #( must be closed by a balanced ], ) or } to be completed |
| 14 | Path operator | :: |
|
| 15 | Literal operators | ( ! [ | cast move |
In that case ( [ | start a new expression, move and | start a lambda literal, ( a tuple, or a 0 priority expression, [ a slice or array literal, ! a template call |
| 16 | Decorated expression | ref const mut dmut cte |
|
| 17 | Anything else | A variable, a literal, etc. |