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Change ref and ref! to unary operators

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This commit is contained in:
Shunsuke Shibayama 2022-09-02 22:49:34 +09:00
parent 62e89a1edf
commit f0d686cd7b
5 changed files with 87 additions and 55 deletions
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26
compiler/erg_parser/token.rs
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@ -103,6 +103,10 @@ pub enum TokenKind {
DotOp,
/// `cross` (vector product)
CrossOp,
/// `ref` (special unary)
RefOp,
/// `ref!` (special unary)
RefMutOp,
/// =
Equal,
/// :=
@ -210,7 +214,7 @@ impl TokenKind {
Symbol => TokenCategory::Symbol,
NatLit | IntLit | RatioLit | StrLit | BoolLit | NoneLit | EllipsisLit | NoImplLit
| InfLit => TokenCategory::Literal,
PrePlus | PreMinus | PreBitNot | Mutate => TokenCategory::UnaryOp,
PrePlus | PreMinus | PreBitNot | Mutate | RefOp | RefMutOp => TokenCategory::UnaryOp,
Try => TokenCategory::PostfixOp,
Comma | Colon | DblColon | SupertypeOf | SubtypeOf | Dot | Pipe | Walrus => {
TokenCategory::SpecialBinOp
@ -234,16 +238,16 @@ impl TokenKind {
pub const fn precedence(&self) -> Option<usize> {
let prec = match self {
Dot | DblColon => 200, // .
Pow => 190, // **
PrePlus | PreMinus | PreBitNot => 180, // (unary) + - * ~
Star | Slash | FloorDiv | Mod | CrossOp | DotOp => 170, // * / // % cross dot
Plus | Minus => 160, // + -
Shl | Shr => 150, // << >>
BitAnd => 140, // &&
BitXor => 130, // ^^
BitOr => 120, // ||
Closed | LeftOpen | RightOpen | Open => 100, // range operators
Dot | DblColon => 200, // .
Pow => 190, // **
PrePlus | PreMinus | PreBitNot | RefOp | RefMutOp => 180, // (unary) + - * ~ ref ref!
Star | Slash | FloorDiv | Mod | CrossOp | DotOp => 170, // * / // % cross dot
Plus | Minus => 160, // + -
Shl | Shr => 150, // << >>
BitAnd => 140, // &&
BitXor => 130, // ^^
BitOr => 120, // ||
Closed | LeftOpen | RightOpen | Open => 100, // range operators
Less | Gre | LessEq | GreEq | DblEq | NotEq | InOp | NotInOp | IsOp | IsNotOp => 90, // < > <= >= == != in notin is isnot
AndOp => 80, // and
OrOp => 70, // or