19 // Reference: https://doc.rust-lang.org/reference/expressions.html#expression-precedence
20 pub(crate) enum Precedence {  enum
58 impl Precedence {  implementation
59     pub(crate) const MIN: Self = Precedence::Jump;
63             BinOp::Add(_) | BinOp::Sub(_) => Precedence::Sum,  in of_binop()
64             BinOp::Mul(_) | BinOp::Div(_) | BinOp::Rem(_) => Precedence::Product,  in of_binop()
65             BinOp::And(_) => Precedence::And,  in of_binop()
66             BinOp::Or(_) => Precedence::Or,  in of_binop()
67             BinOp::BitXor(_) => Precedence::BitXor,  in of_binop()
68             BinOp::BitAnd(_) => Precedence::BitAnd,  in of_binop()
69             BinOp::BitOr(_) => Precedence::BitOr,  in of_binop()
70             BinOp::Shl(_) | BinOp::Shr(_) => Precedence::Shift,  in of_binop()
77             | BinOp::Gt(_) => Precedence::Compare,  in of_binop()
88             | BinOp::ShrAssign(_) => Precedence::Assign,  in of_binop()
95         fn prefix_attrs(attrs: &[Attribute]) -> Precedence {  in of()  argument
98                     return Precedence::Prefix;  in of()
101             Precedence::Unambiguous  in of()
107                 ReturnType::Default => Precedence::Jump,  in of()
115                 Some(_) => Precedence::Jump,  in of()
116                 None => Precedence::Unambiguous,  in of()
119             Expr::Assign(_) => Precedence::Assign,  in of()
120             Expr::Range(_) => Precedence::Range,  in of()
121             Expr::Binary(e) => Precedence::of_binop(&e.op),  in of()
122             Expr::Let(_) => Precedence::Let,  in of()
123             Expr::Cast(_) => Precedence::Cast,  in of()
124             Expr::RawAddr(_) | Expr::Reference(_) | Expr::Unary(_) => Precedence::Prefix,  in of()
182             | Expr::While(_) => Precedence::Unambiguous,  in of()
184             Expr::Verbatim(_) => Precedence::Unambiguous,  in of()
192 impl Copy for Precedence {}  implementation
194 impl Clone for Precedence {  implementation
200 impl PartialEq for Precedence {  implementation
206 impl PartialOrd for Precedence {  implementation