David Tolnay | 5553501 | 2018-01-05 16:39:23 -0800 | [diff] [blame] | 1 | // Copyright 2018 Syn Developers |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| 4 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| 5 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| 6 | // option. This file may not be copied, modified, or distributed |
| 7 | // except according to those terms. |
| 8 | |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 9 | use super::*; |
David Tolnay | e303b7c | 2018-05-20 16:46:35 -0700 | [diff] [blame] | 10 | use proc_macro2::{Span, TokenStream}; |
David Tolnay | 94d2b79 | 2018-04-29 12:26:10 -0700 | [diff] [blame] | 11 | use punctuated::Punctuated; |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 12 | #[cfg(feature = "extra-traits")] |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 13 | use std::hash::{Hash, Hasher}; |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 14 | #[cfg(feature = "full")] |
| 15 | use std::mem; |
David Tolnay | 94d2b79 | 2018-04-29 12:26:10 -0700 | [diff] [blame] | 16 | #[cfg(feature = "extra-traits")] |
| 17 | use tt::TokenStreamHelper; |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 18 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 19 | ast_enum_of_structs! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 20 | /// A Rust expression. |
David Tolnay | 614a014 | 2018-01-07 10:25:43 -0800 | [diff] [blame] | 21 | /// |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 22 | /// *This type is available if Syn is built with the `"derive"` or `"full"` |
| 23 | /// feature.* |
| 24 | /// |
David Tolnay | 614a014 | 2018-01-07 10:25:43 -0800 | [diff] [blame] | 25 | /// # Syntax tree enums |
| 26 | /// |
| 27 | /// This type is a syntax tree enum. In Syn this and other syntax tree enums |
| 28 | /// are designed to be traversed using the following rebinding idiom. |
| 29 | /// |
| 30 | /// ``` |
| 31 | /// # use syn::Expr; |
| 32 | /// # |
| 33 | /// # fn example(expr: Expr) { |
| 34 | /// # const IGNORE: &str = stringify! { |
| 35 | /// let expr: Expr = /* ... */; |
| 36 | /// # }; |
| 37 | /// match expr { |
| 38 | /// Expr::MethodCall(expr) => { |
| 39 | /// /* ... */ |
| 40 | /// } |
| 41 | /// Expr::Cast(expr) => { |
| 42 | /// /* ... */ |
| 43 | /// } |
| 44 | /// Expr::IfLet(expr) => { |
| 45 | /// /* ... */ |
| 46 | /// } |
| 47 | /// /* ... */ |
| 48 | /// # _ => {} |
| 49 | /// } |
| 50 | /// # } |
| 51 | /// ``` |
| 52 | /// |
| 53 | /// We begin with a variable `expr` of type `Expr` that has no fields |
| 54 | /// (because it is an enum), and by matching on it and rebinding a variable |
| 55 | /// with the same name `expr` we effectively imbue our variable with all of |
| 56 | /// the data fields provided by the variant that it turned out to be. So for |
| 57 | /// example above if we ended up in the `MethodCall` case then we get to use |
| 58 | /// `expr.receiver`, `expr.args` etc; if we ended up in the `IfLet` case we |
| 59 | /// get to use `expr.pat`, `expr.then_branch`, `expr.else_branch`. |
| 60 | /// |
| 61 | /// The pattern is similar if the input expression is borrowed: |
| 62 | /// |
| 63 | /// ``` |
| 64 | /// # use syn::Expr; |
| 65 | /// # |
| 66 | /// # fn example(expr: &Expr) { |
| 67 | /// match *expr { |
| 68 | /// Expr::MethodCall(ref expr) => { |
| 69 | /// # } |
| 70 | /// # _ => {} |
| 71 | /// # } |
| 72 | /// # } |
| 73 | /// ``` |
| 74 | /// |
| 75 | /// This approach avoids repeating the variant names twice on every line. |
| 76 | /// |
| 77 | /// ``` |
| 78 | /// # use syn::{Expr, ExprMethodCall}; |
| 79 | /// # |
| 80 | /// # fn example(expr: Expr) { |
| 81 | /// # match expr { |
| 82 | /// Expr::MethodCall(ExprMethodCall { method, args, .. }) => { // repetitive |
| 83 | /// # } |
| 84 | /// # _ => {} |
| 85 | /// # } |
| 86 | /// # } |
| 87 | /// ``` |
| 88 | /// |
| 89 | /// In general, the name to which a syntax tree enum variant is bound should |
| 90 | /// be a suitable name for the complete syntax tree enum type. |
| 91 | /// |
| 92 | /// ``` |
| 93 | /// # use syn::{Expr, ExprField}; |
| 94 | /// # |
| 95 | /// # fn example(discriminant: &ExprField) { |
| 96 | /// // Binding is called `base` which is the name I would use if I were |
| 97 | /// // assigning `*discriminant.base` without an `if let`. |
| 98 | /// if let Expr::Tuple(ref base) = *discriminant.base { |
| 99 | /// # } |
| 100 | /// # } |
| 101 | /// ``` |
| 102 | /// |
| 103 | /// A sign that you may not be choosing the right variable names is if you |
| 104 | /// see names getting repeated in your code, like accessing |
| 105 | /// `receiver.receiver` or `pat.pat` or `cond.cond`. |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 106 | pub enum Expr { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 107 | /// A box expression: `box f`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 108 | /// |
| 109 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 110 | pub Box(ExprBox #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 111 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 112 | pub box_token: Token![box], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 113 | pub expr: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 114 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 115 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 116 | /// A placement expression: `place <- value`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 117 | /// |
| 118 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 119 | pub InPlace(ExprInPlace #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 120 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 121 | pub place: Box<Expr>, |
David Tolnay | 8701a5c | 2017-12-28 23:31:10 -0500 | [diff] [blame] | 122 | pub arrow_token: Token![<-], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 123 | pub value: Box<Expr>, |
| 124 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 125 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 126 | /// A slice literal expression: `[a, b, c, d]`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 127 | /// |
| 128 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 129 | pub Array(ExprArray #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 130 | pub attrs: Vec<Attribute>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 131 | pub bracket_token: token::Bracket, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 132 | pub elems: Punctuated<Expr, Token![,]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 133 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 134 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 135 | /// A function call expression: `invoke(a, b)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 136 | /// |
| 137 | /// *This type is available if Syn is built with the `"derive"` or |
| 138 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 139 | pub Call(ExprCall { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 140 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 141 | pub func: Box<Expr>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 142 | pub paren_token: token::Paren, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 143 | pub args: Punctuated<Expr, Token![,]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 144 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 145 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 146 | /// A method call expression: `x.foo::<T>(a, b)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 147 | /// |
| 148 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 149 | pub MethodCall(ExprMethodCall #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 150 | pub attrs: Vec<Attribute>, |
David Tolnay | 7641851 | 2017-12-28 23:47:47 -0500 | [diff] [blame] | 151 | pub receiver: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 152 | pub dot_token: Token![.], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 153 | pub method: Ident, |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 154 | pub turbofish: Option<MethodTurbofish>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 155 | pub paren_token: token::Paren, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 156 | pub args: Punctuated<Expr, Token![,]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 157 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 158 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 159 | /// A tuple expression: `(a, b, c, d)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 160 | /// |
| 161 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 0536258 | 2017-12-26 01:33:57 -0500 | [diff] [blame] | 162 | pub Tuple(ExprTuple #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 163 | pub attrs: Vec<Attribute>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 164 | pub paren_token: token::Paren, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 165 | pub elems: Punctuated<Expr, Token![,]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 166 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 167 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 168 | /// A binary operation: `a + b`, `a * b`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 169 | /// |
| 170 | /// *This type is available if Syn is built with the `"derive"` or |
| 171 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 172 | pub Binary(ExprBinary { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 173 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 174 | pub left: Box<Expr>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 175 | pub op: BinOp, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 176 | pub right: Box<Expr>, |
| 177 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 178 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 179 | /// A unary operation: `!x`, `*x`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 180 | /// |
| 181 | /// *This type is available if Syn is built with the `"derive"` or |
| 182 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 183 | pub Unary(ExprUnary { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 184 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 185 | pub op: UnOp, |
| 186 | pub expr: Box<Expr>, |
| 187 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 188 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 189 | /// A literal in place of an expression: `1`, `"foo"`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 190 | /// |
| 191 | /// *This type is available if Syn is built with the `"derive"` or |
| 192 | /// `"full"` feature.* |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 193 | pub Lit(ExprLit { |
| 194 | pub attrs: Vec<Attribute>, |
| 195 | pub lit: Lit, |
| 196 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 197 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 198 | /// A cast expression: `foo as f64`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 199 | /// |
| 200 | /// *This type is available if Syn is built with the `"derive"` or |
| 201 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 202 | pub Cast(ExprCast { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 203 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 204 | pub expr: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 205 | pub as_token: Token![as], |
David Tolnay | fd6bf5c | 2017-11-12 09:41:14 -0800 | [diff] [blame] | 206 | pub ty: Box<Type>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 207 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 208 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 209 | /// A type ascription expression: `foo: f64`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 210 | /// |
| 211 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 0cf94f2 | 2017-12-28 23:46:26 -0500 | [diff] [blame] | 212 | pub Type(ExprType #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 213 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 214 | pub expr: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 215 | pub colon_token: Token![:], |
David Tolnay | fd6bf5c | 2017-11-12 09:41:14 -0800 | [diff] [blame] | 216 | pub ty: Box<Type>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 217 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 218 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 219 | /// An `if` expression with an optional `else` block: `if expr { ... } |
| 220 | /// else { ... }`. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 221 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 222 | /// The `else` branch expression may only be an `If`, `IfLet`, or |
| 223 | /// `Block` expression, not any of the other types of expression. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 224 | /// |
| 225 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 226 | pub If(ExprIf #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 227 | pub attrs: Vec<Attribute>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 228 | pub if_token: Token![if], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 229 | pub cond: Box<Expr>, |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 230 | pub then_branch: Block, |
| 231 | pub else_branch: Option<(Token![else], Box<Expr>)>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 232 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 233 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 234 | /// An `if let` expression with an optional `else` block: `if let pat = |
| 235 | /// expr { ... } else { ... }`. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 236 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 237 | /// The `else` branch expression may only be an `If`, `IfLet`, or |
| 238 | /// `Block` expression, not any of the other types of expression. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 239 | /// |
| 240 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 241 | pub IfLet(ExprIfLet #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 242 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 243 | pub if_token: Token![if], |
| 244 | pub let_token: Token![let], |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 245 | pub pats: Punctuated<Pat, Token![|]>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 246 | pub eq_token: Token![=], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 247 | pub expr: Box<Expr>, |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 248 | pub then_branch: Block, |
| 249 | pub else_branch: Option<(Token![else], Box<Expr>)>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 250 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 251 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 252 | /// A while loop: `while expr { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 253 | /// |
| 254 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 255 | pub While(ExprWhile #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 256 | pub attrs: Vec<Attribute>, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 257 | pub label: Option<Label>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 258 | pub while_token: Token![while], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 259 | pub cond: Box<Expr>, |
| 260 | pub body: Block, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 261 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 262 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 263 | /// A while-let loop: `while let pat = expr { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 264 | /// |
| 265 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 266 | pub WhileLet(ExprWhileLet #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 267 | pub attrs: Vec<Attribute>, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 268 | pub label: Option<Label>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 269 | pub while_token: Token![while], |
| 270 | pub let_token: Token![let], |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 271 | pub pats: Punctuated<Pat, Token![|]>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 272 | pub eq_token: Token![=], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 273 | pub expr: Box<Expr>, |
| 274 | pub body: Block, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 275 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 276 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 277 | /// A for loop: `for pat in expr { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 278 | /// |
| 279 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 280 | pub ForLoop(ExprForLoop #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 281 | pub attrs: Vec<Attribute>, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 282 | pub label: Option<Label>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 283 | pub for_token: Token![for], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 284 | pub pat: Box<Pat>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 285 | pub in_token: Token![in], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 286 | pub expr: Box<Expr>, |
| 287 | pub body: Block, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 288 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 289 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 290 | /// Conditionless loop: `loop { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 291 | /// |
| 292 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 293 | pub Loop(ExprLoop #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 294 | pub attrs: Vec<Attribute>, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 295 | pub label: Option<Label>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 296 | pub loop_token: Token![loop], |
| 297 | pub body: Block, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 298 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 299 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 300 | /// A `match` expression: `match n { Some(n) => {}, None => {} }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 301 | /// |
| 302 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 303 | pub Match(ExprMatch #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 304 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 305 | pub match_token: Token![match], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 306 | pub expr: Box<Expr>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 307 | pub brace_token: token::Brace, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 308 | pub arms: Vec<Arm>, |
| 309 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 310 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 311 | /// A closure expression: `|a, b| a + b`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 312 | /// |
| 313 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 314 | pub Closure(ExprClosure #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 315 | pub attrs: Vec<Attribute>, |
Yusuke Sasaki | 4e5d966 | 2018-07-21 02:49:47 +0900 | [diff] [blame] | 316 | pub asyncness: Option<Token![async]>, |
David Tolnay | 13d4c0e | 2018-03-31 20:53:59 +0200 | [diff] [blame] | 317 | pub movability: Option<Token![static]>, |
David Tolnay | efc96fb | 2017-12-29 02:03:15 -0500 | [diff] [blame] | 318 | pub capture: Option<Token![move]>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 319 | pub or1_token: Token![|], |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 320 | pub inputs: Punctuated<FnArg, Token![,]>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 321 | pub or2_token: Token![|], |
David Tolnay | 7f67574 | 2017-12-27 22:43:21 -0500 | [diff] [blame] | 322 | pub output: ReturnType, |
| 323 | pub body: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 324 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 325 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 326 | /// An unsafe block: `unsafe { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 327 | /// |
| 328 | /// *This type is available if Syn is built with the `"full"` feature.* |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 329 | pub Unsafe(ExprUnsafe #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 330 | pub attrs: Vec<Attribute>, |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 331 | pub unsafe_token: Token![unsafe], |
| 332 | pub block: Block, |
| 333 | }), |
| 334 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 335 | /// A blocked scope: `{ ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 336 | /// |
| 337 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 338 | pub Block(ExprBlock #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 339 | pub attrs: Vec<Attribute>, |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 340 | pub label: Option<Label>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 341 | pub block: Block, |
| 342 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 343 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 344 | /// An assignment expression: `a = compute()`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 345 | /// |
| 346 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 347 | pub Assign(ExprAssign #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 348 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 349 | pub left: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 350 | pub eq_token: Token![=], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 351 | pub right: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 352 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 353 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 354 | /// A compound assignment expression: `counter += 1`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 355 | /// |
| 356 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 357 | pub AssignOp(ExprAssignOp #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 358 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 359 | pub left: Box<Expr>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 360 | pub op: BinOp, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 361 | pub right: Box<Expr>, |
| 362 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 363 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 364 | /// Access of a named struct field (`obj.k`) or unnamed tuple struct |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 365 | /// field (`obj.0`). |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 366 | /// |
| 367 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | d514774 | 2018-06-30 10:09:52 -0700 | [diff] [blame] | 368 | pub Field(ExprField { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 369 | pub attrs: Vec<Attribute>, |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 370 | pub base: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 371 | pub dot_token: Token![.], |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 372 | pub member: Member, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 373 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 374 | |
David Tolnay | 0565850 | 2018-01-07 09:56:37 -0800 | [diff] [blame] | 375 | /// A square bracketed indexing expression: `vector[2]`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 376 | /// |
| 377 | /// *This type is available if Syn is built with the `"derive"` or |
| 378 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 379 | pub Index(ExprIndex { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 380 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 381 | pub expr: Box<Expr>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 382 | pub bracket_token: token::Bracket, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 383 | pub index: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 384 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 385 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 386 | /// A range expression: `1..2`, `1..`, `..2`, `1..=2`, `..=2`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 387 | /// |
| 388 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 389 | pub Range(ExprRange #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 390 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 391 | pub from: Option<Box<Expr>>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 392 | pub limits: RangeLimits, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 393 | pub to: Option<Box<Expr>>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 394 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 395 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 396 | /// A path like `std::mem::replace` possibly containing generic |
| 397 | /// parameters and a qualified self-type. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 398 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 399 | /// A plain identifier like `x` is a path of length 1. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 400 | /// |
| 401 | /// *This type is available if Syn is built with the `"derive"` or |
| 402 | /// `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 403 | pub Path(ExprPath { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 404 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 405 | pub qself: Option<QSelf>, |
| 406 | pub path: Path, |
| 407 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 408 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 409 | /// A referencing operation: `&a` or `&mut a`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 410 | /// |
| 411 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 00674ba | 2018-03-31 18:14:11 +0200 | [diff] [blame] | 412 | pub Reference(ExprReference #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 413 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 414 | pub and_token: Token![&], |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 415 | pub mutability: Option<Token![mut]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 416 | pub expr: Box<Expr>, |
| 417 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 418 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 419 | /// A `break`, with an optional label to break and an optional |
| 420 | /// expression. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 421 | /// |
| 422 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 423 | pub Break(ExprBreak #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 424 | pub attrs: Vec<Attribute>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 425 | pub break_token: Token![break], |
David Tolnay | 63e3dee | 2017-06-03 20:13:17 -0700 | [diff] [blame] | 426 | pub label: Option<Lifetime>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 427 | pub expr: Option<Box<Expr>>, |
| 428 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 429 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 430 | /// A `continue`, with an optional label. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 431 | /// |
| 432 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 433 | pub Continue(ExprContinue #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 434 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 435 | pub continue_token: Token![continue], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 436 | pub label: Option<Lifetime>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 437 | }), |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 438 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 439 | /// A `return`, with an optional value to be returned. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 440 | /// |
| 441 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | c246cd3 | 2017-12-28 23:14:32 -0500 | [diff] [blame] | 442 | pub Return(ExprReturn #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 443 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 444 | pub return_token: Token![return], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 445 | pub expr: Option<Box<Expr>>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 446 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 447 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 448 | /// A macro invocation expression: `format!("{}", q)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 449 | /// |
| 450 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 451 | pub Macro(ExprMacro #full { |
| 452 | pub attrs: Vec<Attribute>, |
| 453 | pub mac: Macro, |
| 454 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 455 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 456 | /// A struct literal expression: `Point { x: 1, y: 1 }`. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 457 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 458 | /// The `rest` provides the value of the remaining fields as in `S { a: |
| 459 | /// 1, b: 1, ..rest }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 460 | /// |
| 461 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 462 | pub Struct(ExprStruct #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 463 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 464 | pub path: Path, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 465 | pub brace_token: token::Brace, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 466 | pub fields: Punctuated<FieldValue, Token![,]>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 467 | pub dot2_token: Option<Token![..]>, |
| 468 | pub rest: Option<Box<Expr>>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 469 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 470 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 471 | /// An array literal constructed from one repeated element: `[0u8; N]`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 472 | /// |
| 473 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 474 | pub Repeat(ExprRepeat #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 475 | pub attrs: Vec<Attribute>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 476 | pub bracket_token: token::Bracket, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 477 | pub expr: Box<Expr>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 478 | pub semi_token: Token![;], |
David Tolnay | 84d8044 | 2018-01-07 01:03:20 -0800 | [diff] [blame] | 479 | pub len: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 480 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 481 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 482 | /// A parenthesized expression: `(a + b)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 483 | /// |
| 484 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 9374bc0 | 2018-01-27 18:49:36 -0800 | [diff] [blame] | 485 | pub Paren(ExprParen { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 486 | pub attrs: Vec<Attribute>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 487 | pub paren_token: token::Paren, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 488 | pub expr: Box<Expr>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 489 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 490 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 491 | /// An expression contained within invisible delimiters. |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 492 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 493 | /// This variant is important for faithfully representing the precedence |
| 494 | /// of expressions and is related to `None`-delimited spans in a |
| 495 | /// `TokenStream`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 496 | /// |
| 497 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | e98775f | 2017-12-28 23:17:00 -0500 | [diff] [blame] | 498 | pub Group(ExprGroup #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 499 | pub attrs: Vec<Attribute>, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 500 | pub group_token: token::Group, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 501 | pub expr: Box<Expr>, |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 502 | }), |
| 503 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 504 | /// A try-expression: `expr?`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 505 | /// |
| 506 | /// *This type is available if Syn is built with the `"full"` feature.* |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 507 | pub Try(ExprTry #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 508 | pub attrs: Vec<Attribute>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 509 | pub expr: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 510 | pub question_token: Token![?], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 511 | }), |
Arnavion | 02ef13f | 2017-04-25 00:54:31 -0700 | [diff] [blame] | 512 | |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 513 | /// An async block: `async { ... }`. |
| 514 | /// |
| 515 | /// *This type is available if Syn is built with the `"full"` feature.* |
| 516 | pub Async(ExprAsync #full { |
| 517 | pub attrs: Vec<Attribute>, |
| 518 | pub async_token: Token![async], |
| 519 | pub capture: Option<Token![move]>, |
| 520 | pub block: Block, |
| 521 | }), |
| 522 | |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 523 | /// A try block: `try { ... }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 524 | /// |
| 525 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 526 | pub TryBlock(ExprTryBlock #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 527 | pub attrs: Vec<Attribute>, |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 528 | pub try_token: Token![try], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 529 | pub block: Block, |
| 530 | }), |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 531 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 532 | /// A yield expression: `yield expr`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 533 | /// |
| 534 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 535 | pub Yield(ExprYield #full { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 536 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 537 | pub yield_token: Token![yield], |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 538 | pub expr: Option<Box<Expr>>, |
| 539 | }), |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 540 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 541 | /// Tokens in expression position not interpreted by Syn. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 542 | /// |
| 543 | /// *This type is available if Syn is built with the `"derive"` or |
| 544 | /// `"full"` feature.* |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 545 | pub Verbatim(ExprVerbatim #manual_extra_traits { |
| 546 | pub tts: TokenStream, |
| 547 | }), |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | #[cfg(feature = "extra-traits")] |
| 552 | impl Eq for ExprVerbatim {} |
| 553 | |
| 554 | #[cfg(feature = "extra-traits")] |
| 555 | impl PartialEq for ExprVerbatim { |
| 556 | fn eq(&self, other: &Self) -> bool { |
| 557 | TokenStreamHelper(&self.tts) == TokenStreamHelper(&other.tts) |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | #[cfg(feature = "extra-traits")] |
| 562 | impl Hash for ExprVerbatim { |
| 563 | fn hash<H>(&self, state: &mut H) |
| 564 | where |
| 565 | H: Hasher, |
| 566 | { |
| 567 | TokenStreamHelper(&self.tts).hash(state); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 568 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 569 | } |
| 570 | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 571 | impl Expr { |
| 572 | // Not public API. |
| 573 | #[doc(hidden)] |
David Tolnay | 096d498 | 2017-12-28 23:18:18 -0500 | [diff] [blame] | 574 | #[cfg(feature = "full")] |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 575 | pub fn replace_attrs(&mut self, new: Vec<Attribute>) -> Vec<Attribute> { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 576 | match *self { |
David Tolnay | 61037c6 | 2018-01-05 16:21:03 -0800 | [diff] [blame] | 577 | Expr::Box(ExprBox { ref mut attrs, .. }) |
| 578 | | Expr::InPlace(ExprInPlace { ref mut attrs, .. }) |
| 579 | | Expr::Array(ExprArray { ref mut attrs, .. }) |
| 580 | | Expr::Call(ExprCall { ref mut attrs, .. }) |
| 581 | | Expr::MethodCall(ExprMethodCall { ref mut attrs, .. }) |
| 582 | | Expr::Tuple(ExprTuple { ref mut attrs, .. }) |
| 583 | | Expr::Binary(ExprBinary { ref mut attrs, .. }) |
| 584 | | Expr::Unary(ExprUnary { ref mut attrs, .. }) |
| 585 | | Expr::Lit(ExprLit { ref mut attrs, .. }) |
| 586 | | Expr::Cast(ExprCast { ref mut attrs, .. }) |
| 587 | | Expr::Type(ExprType { ref mut attrs, .. }) |
| 588 | | Expr::If(ExprIf { ref mut attrs, .. }) |
| 589 | | Expr::IfLet(ExprIfLet { ref mut attrs, .. }) |
| 590 | | Expr::While(ExprWhile { ref mut attrs, .. }) |
| 591 | | Expr::WhileLet(ExprWhileLet { ref mut attrs, .. }) |
| 592 | | Expr::ForLoop(ExprForLoop { ref mut attrs, .. }) |
| 593 | | Expr::Loop(ExprLoop { ref mut attrs, .. }) |
| 594 | | Expr::Match(ExprMatch { ref mut attrs, .. }) |
| 595 | | Expr::Closure(ExprClosure { ref mut attrs, .. }) |
| 596 | | Expr::Unsafe(ExprUnsafe { ref mut attrs, .. }) |
| 597 | | Expr::Block(ExprBlock { ref mut attrs, .. }) |
| 598 | | Expr::Assign(ExprAssign { ref mut attrs, .. }) |
| 599 | | Expr::AssignOp(ExprAssignOp { ref mut attrs, .. }) |
| 600 | | Expr::Field(ExprField { ref mut attrs, .. }) |
| 601 | | Expr::Index(ExprIndex { ref mut attrs, .. }) |
| 602 | | Expr::Range(ExprRange { ref mut attrs, .. }) |
| 603 | | Expr::Path(ExprPath { ref mut attrs, .. }) |
David Tolnay | 00674ba | 2018-03-31 18:14:11 +0200 | [diff] [blame] | 604 | | Expr::Reference(ExprReference { ref mut attrs, .. }) |
David Tolnay | 61037c6 | 2018-01-05 16:21:03 -0800 | [diff] [blame] | 605 | | Expr::Break(ExprBreak { ref mut attrs, .. }) |
| 606 | | Expr::Continue(ExprContinue { ref mut attrs, .. }) |
| 607 | | Expr::Return(ExprReturn { ref mut attrs, .. }) |
| 608 | | Expr::Macro(ExprMacro { ref mut attrs, .. }) |
| 609 | | Expr::Struct(ExprStruct { ref mut attrs, .. }) |
| 610 | | Expr::Repeat(ExprRepeat { ref mut attrs, .. }) |
| 611 | | Expr::Paren(ExprParen { ref mut attrs, .. }) |
| 612 | | Expr::Group(ExprGroup { ref mut attrs, .. }) |
| 613 | | Expr::Try(ExprTry { ref mut attrs, .. }) |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 614 | | Expr::Async(ExprAsync { ref mut attrs, .. }) |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 615 | | Expr::TryBlock(ExprTryBlock { ref mut attrs, .. }) |
David Tolnay | 61037c6 | 2018-01-05 16:21:03 -0800 | [diff] [blame] | 616 | | Expr::Yield(ExprYield { ref mut attrs, .. }) => mem::replace(attrs, new), |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 617 | Expr::Verbatim(_) => { |
| 618 | // TODO |
| 619 | Vec::new() |
| 620 | } |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 621 | } |
| 622 | } |
| 623 | } |
| 624 | |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 625 | ast_enum! { |
| 626 | /// A struct or tuple struct field accessed in a struct literal or field |
| 627 | /// expression. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 628 | /// |
| 629 | /// *This type is available if Syn is built with the `"derive"` or `"full"` |
| 630 | /// feature.* |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 631 | pub enum Member { |
| 632 | /// A named field like `self.x`. |
| 633 | Named(Ident), |
| 634 | /// An unnamed field like `self.0`. |
| 635 | Unnamed(Index), |
| 636 | } |
| 637 | } |
| 638 | |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 639 | ast_struct! { |
| 640 | /// The index of an unnamed tuple struct field. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 641 | /// |
| 642 | /// *This type is available if Syn is built with the `"derive"` or `"full"` |
| 643 | /// feature.* |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 644 | pub struct Index #manual_extra_traits { |
| 645 | pub index: u32, |
| 646 | pub span: Span, |
| 647 | } |
| 648 | } |
| 649 | |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 650 | impl From<usize> for Index { |
| 651 | fn from(index: usize) -> Index { |
David Tolnay | 34071ba | 2018-05-20 20:00:41 -0700 | [diff] [blame] | 652 | assert!(index < u32::max_value() as usize); |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 653 | Index { |
| 654 | index: index as u32, |
Alex Crichton | 9a4dca2 | 2018-03-28 06:32:19 -0700 | [diff] [blame] | 655 | span: Span::call_site(), |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 656 | } |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | #[cfg(feature = "extra-traits")] |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 661 | impl Eq for Index {} |
| 662 | |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 663 | #[cfg(feature = "extra-traits")] |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 664 | impl PartialEq for Index { |
| 665 | fn eq(&self, other: &Self) -> bool { |
| 666 | self.index == other.index |
| 667 | } |
| 668 | } |
| 669 | |
David Tolnay | 1498201 | 2017-12-29 00:49:51 -0500 | [diff] [blame] | 670 | #[cfg(feature = "extra-traits")] |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 671 | impl Hash for Index { |
| 672 | fn hash<H: Hasher>(&self, state: &mut H) { |
| 673 | self.index.hash(state); |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 678 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 679 | /// The `::<>` explicit type parameters passed to a method call: |
| 680 | /// `parse::<u64>()`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 681 | /// |
| 682 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 683 | pub struct MethodTurbofish { |
| 684 | pub colon2_token: Token![::], |
| 685 | pub lt_token: Token![<], |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 686 | pub args: Punctuated<GenericMethodArgument, Token![,]>, |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 687 | pub gt_token: Token![>], |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | #[cfg(feature = "full")] |
| 692 | ast_enum! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 693 | /// An individual generic argument to a method, like `T`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 694 | /// |
| 695 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 696 | pub enum GenericMethodArgument { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 697 | /// A type argument. |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 698 | Type(Type), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 699 | /// A const expression. Must be inside of a block. |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 700 | /// |
| 701 | /// NOTE: Identity expressions are represented as Type arguments, as |
| 702 | /// they are indistinguishable syntactically. |
| 703 | Const(Expr), |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | #[cfg(feature = "full")] |
| 708 | ast_struct! { |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 709 | /// A field-value pair in a struct literal. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 710 | /// |
| 711 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 712 | pub struct FieldValue { |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 713 | /// Attributes tagged on the field. |
| 714 | pub attrs: Vec<Attribute>, |
| 715 | |
| 716 | /// Name or index of the field. |
| 717 | pub member: Member, |
| 718 | |
David Tolnay | 5d7098a | 2017-12-29 01:35:24 -0500 | [diff] [blame] | 719 | /// The colon in `Struct { x: x }`. If written in shorthand like |
| 720 | /// `Struct { x }`, there is no colon. |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 721 | pub colon_token: Option<Token![:]>, |
Clar Charr | d22b570 | 2017-03-10 15:24:56 -0500 | [diff] [blame] | 722 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 723 | /// Value of the field. |
| 724 | pub expr: Expr, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 725 | } |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 726 | } |
| 727 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 728 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 729 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 730 | /// A lifetime labeling a `for`, `while`, or `loop`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 731 | /// |
| 732 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 733 | pub struct Label { |
| 734 | pub name: Lifetime, |
| 735 | pub colon_token: Token![:], |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | #[cfg(feature = "full")] |
| 740 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 741 | /// A braced block containing Rust statements. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 742 | /// |
| 743 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 744 | pub struct Block { |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 745 | pub brace_token: token::Brace, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 746 | /// Statements in a block |
| 747 | pub stmts: Vec<Stmt>, |
| 748 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 749 | } |
| 750 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 751 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 752 | ast_enum! { |
| 753 | /// A statement, usually ending in a semicolon. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 754 | /// |
| 755 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 756 | pub enum Stmt { |
| 757 | /// A local (let) binding. |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 758 | Local(Local), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 759 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 760 | /// An item definition. |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 761 | Item(Item), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 762 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 763 | /// Expr without trailing semicolon. |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 764 | Expr(Expr), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 765 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 766 | /// Expression with trailing semicolon. |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 767 | Semi(Expr, Token![;]), |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 768 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 769 | } |
| 770 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 771 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 772 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 773 | /// A local `let` binding: `let x: u64 = s.parse()?`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 774 | /// |
| 775 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 776 | pub struct Local { |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 777 | pub attrs: Vec<Attribute>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 778 | pub let_token: Token![let], |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 779 | pub pats: Punctuated<Pat, Token![|]>, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 780 | pub ty: Option<(Token![:], Box<Type>)>, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 781 | pub init: Option<(Token![=], Box<Expr>)>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 782 | pub semi_token: Token![;], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 783 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 784 | } |
| 785 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 786 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 787 | ast_enum_of_structs! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 788 | /// A pattern in a local binding, function signature, match expression, or |
| 789 | /// various other places. |
David Tolnay | 614a014 | 2018-01-07 10:25:43 -0800 | [diff] [blame] | 790 | /// |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 791 | /// *This type is available if Syn is built with the `"full"` feature.* |
| 792 | /// |
David Tolnay | 614a014 | 2018-01-07 10:25:43 -0800 | [diff] [blame] | 793 | /// # Syntax tree enum |
| 794 | /// |
| 795 | /// This type is a [syntax tree enum]. |
| 796 | /// |
| 797 | /// [syntax tree enum]: enum.Expr.html#syntax-tree-enums |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 798 | // Clippy false positive |
| 799 | // https://github.com/Manishearth/rust-clippy/issues/1241 |
| 800 | #[cfg_attr(feature = "cargo-clippy", allow(enum_variant_names))] |
| 801 | pub enum Pat { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 802 | /// A pattern that matches any value: `_`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 803 | /// |
| 804 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 805 | pub Wild(PatWild { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 806 | pub underscore_token: Token![_], |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 807 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 808 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 809 | /// A pattern that binds a new variable: `ref mut binding @ SUBPATTERN`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 810 | /// |
| 811 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 812 | pub Ident(PatIdent { |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 813 | pub by_ref: Option<Token![ref]>, |
| 814 | pub mutability: Option<Token![mut]>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 815 | pub ident: Ident, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 816 | pub subpat: Option<(Token![@], Box<Pat>)>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 817 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 818 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 819 | /// A struct or struct variant pattern: `Variant { x, y, .. }`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 820 | /// |
| 821 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 822 | pub Struct(PatStruct { |
| 823 | pub path: Path, |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 824 | pub brace_token: token::Brace, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 825 | pub fields: Punctuated<FieldPat, Token![,]>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 826 | pub dot2_token: Option<Token![..]>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 827 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 828 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 829 | /// A tuple struct or tuple variant pattern: `Variant(x, y, .., z)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 830 | /// |
| 831 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 832 | pub TupleStruct(PatTupleStruct { |
| 833 | pub path: Path, |
| 834 | pub pat: PatTuple, |
| 835 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 836 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 837 | /// A path pattern like `Color::Red`, optionally qualified with a |
| 838 | /// self-type. |
| 839 | /// |
| 840 | /// Unquailfied path patterns can legally refer to variants, structs, |
| 841 | /// constants or associated constants. Quailfied path patterns like |
| 842 | /// `<A>::B::C` and `<A as Trait>::B::C` can only legally refer to |
| 843 | /// associated constants. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 844 | /// |
| 845 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 846 | pub Path(PatPath { |
| 847 | pub qself: Option<QSelf>, |
| 848 | pub path: Path, |
| 849 | }), |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 850 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 851 | /// A tuple pattern: `(a, b)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 852 | /// |
| 853 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 854 | pub Tuple(PatTuple { |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 855 | pub paren_token: token::Paren, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 856 | pub front: Punctuated<Pat, Token![,]>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 857 | pub dot2_token: Option<Token![..]>, |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 858 | pub comma_token: Option<Token![,]>, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 859 | pub back: Punctuated<Pat, Token![,]>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 860 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 861 | |
| 862 | /// A box pattern: `box v`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 863 | /// |
| 864 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 865 | pub Box(PatBox { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 866 | pub box_token: Token![box], |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 867 | pub pat: Box<Pat>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 868 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 869 | |
| 870 | /// A reference pattern: `&mut (first, second)`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 871 | /// |
| 872 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 873 | pub Ref(PatRef { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 874 | pub and_token: Token![&], |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 875 | pub mutability: Option<Token![mut]>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 876 | pub pat: Box<Pat>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 877 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 878 | |
| 879 | /// A literal pattern: `0`. |
| 880 | /// |
| 881 | /// This holds an `Expr` rather than a `Lit` because negative numbers |
| 882 | /// are represented as an `Expr::Unary`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 883 | /// |
| 884 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 885 | pub Lit(PatLit { |
| 886 | pub expr: Box<Expr>, |
| 887 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 888 | |
| 889 | /// A range pattern: `1..=2`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 890 | /// |
| 891 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 892 | pub Range(PatRange { |
| 893 | pub lo: Box<Expr>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 894 | pub limits: RangeLimits, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 895 | pub hi: Box<Expr>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 896 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 897 | |
| 898 | /// A dynamically sized slice pattern: `[a, b, i.., y, z]`. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 899 | /// |
| 900 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 901 | pub Slice(PatSlice { |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 902 | pub bracket_token: token::Bracket, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 903 | pub front: Punctuated<Pat, Token![,]>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 904 | pub middle: Option<Box<Pat>>, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 905 | pub dot2_token: Option<Token![..]>, |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 906 | pub comma_token: Option<Token![,]>, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 907 | pub back: Punctuated<Pat, Token![,]>, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 908 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 909 | |
| 910 | /// A macro in expression position. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 911 | /// |
| 912 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 323279a | 2017-12-29 11:26:32 -0500 | [diff] [blame] | 913 | pub Macro(PatMacro { |
| 914 | pub mac: Macro, |
| 915 | }), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 916 | |
| 917 | /// Tokens in pattern position not interpreted by Syn. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 918 | /// |
| 919 | /// *This type is available if Syn is built with the `"full"` feature.* |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 920 | pub Verbatim(PatVerbatim #manual_extra_traits { |
| 921 | pub tts: TokenStream, |
| 922 | }), |
| 923 | } |
| 924 | } |
| 925 | |
David Tolnay | c43b44e | 2017-12-30 23:55:54 -0500 | [diff] [blame] | 926 | #[cfg(all(feature = "full", feature = "extra-traits"))] |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 927 | impl Eq for PatVerbatim {} |
| 928 | |
David Tolnay | c43b44e | 2017-12-30 23:55:54 -0500 | [diff] [blame] | 929 | #[cfg(all(feature = "full", feature = "extra-traits"))] |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 930 | impl PartialEq for PatVerbatim { |
| 931 | fn eq(&self, other: &Self) -> bool { |
| 932 | TokenStreamHelper(&self.tts) == TokenStreamHelper(&other.tts) |
| 933 | } |
| 934 | } |
| 935 | |
David Tolnay | c43b44e | 2017-12-30 23:55:54 -0500 | [diff] [blame] | 936 | #[cfg(all(feature = "full", feature = "extra-traits"))] |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 937 | impl Hash for PatVerbatim { |
| 938 | fn hash<H>(&self, state: &mut H) |
| 939 | where |
| 940 | H: Hasher, |
| 941 | { |
| 942 | TokenStreamHelper(&self.tts).hash(state); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 943 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 944 | } |
| 945 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 946 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 947 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 948 | /// One arm of a `match` expression: `0...10 => { return true; }`. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 949 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 950 | /// As in: |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 951 | /// |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 952 | /// ```rust |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 953 | /// # fn f() -> bool { |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 954 | /// # let n = 0; |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 955 | /// match n { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 956 | /// 0...10 => { |
| 957 | /// return true; |
| 958 | /// } |
| 959 | /// // ... |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 960 | /// # _ => {} |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 961 | /// } |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 962 | /// # false |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 963 | /// # } |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 964 | /// ``` |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 965 | /// |
| 966 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 967 | pub struct Arm { |
| 968 | pub attrs: Vec<Attribute>, |
David Tolnay | 18cc4d4 | 2018-03-31 18:47:20 +0200 | [diff] [blame] | 969 | pub leading_vert: Option<Token![|]>, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 970 | pub pats: Punctuated<Pat, Token![|]>, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 971 | pub guard: Option<(Token![if], Box<Expr>)>, |
David Tolnay | dfb9143 | 2018-03-31 19:19:44 +0200 | [diff] [blame] | 972 | pub fat_arrow_token: Token![=>], |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 973 | pub body: Box<Expr>, |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 974 | pub comma: Option<Token![,]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 975 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 976 | } |
| 977 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 978 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 979 | ast_enum! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 980 | /// Limit types of a range, inclusive or exclusive. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 981 | /// |
| 982 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 2e0229c | 2017-05-23 09:34:50 -0700 | [diff] [blame] | 983 | #[cfg_attr(feature = "clone-impls", derive(Copy))] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 984 | pub enum RangeLimits { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 985 | /// Inclusive at the beginning, exclusive at the end. |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 986 | HalfOpen(Token![..]), |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 987 | /// Inclusive at the beginning and end. |
David Tolnay | be55d7b | 2017-12-17 23:41:20 -0800 | [diff] [blame] | 988 | Closed(Token![..=]), |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 989 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 990 | } |
| 991 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 992 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 993 | ast_struct! { |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 994 | /// A single field in a struct pattern. |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 995 | /// |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 996 | /// Patterns like the fields of Foo `{ x, ref y, ref mut z }` are treated |
| 997 | /// the same as `x: x, y: ref y, z: ref mut z` but there is no colon token. |
David Tolnay | 461d98e | 2018-01-07 11:07:19 -0800 | [diff] [blame] | 998 | /// |
| 999 | /// *This type is available if Syn is built with the `"full"` feature.* |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 1000 | pub struct FieldPat { |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 1001 | pub attrs: Vec<Attribute>, |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 1002 | pub member: Member, |
David Tolnay | 4a3f59a | 2017-12-28 21:21:12 -0500 | [diff] [blame] | 1003 | pub colon_token: Option<Token![:]>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 1004 | pub pat: Box<Pat>, |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 1005 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 1006 | } |
| 1007 | |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 1008 | #[cfg(any(feature = "parsing", feature = "printing"))] |
| 1009 | #[cfg(feature = "full")] |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 1010 | fn arm_expr_requires_comma(expr: &Expr) -> bool { |
| 1011 | // see https://github.com/rust-lang/rust/blob/eb8f2586e |
| 1012 | // /src/libsyntax/parse/classify.rs#L17-L37 |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1013 | match *expr { |
| 1014 | Expr::Unsafe(..) |
| 1015 | | Expr::Block(..) |
| 1016 | | Expr::If(..) |
| 1017 | | Expr::IfLet(..) |
| 1018 | | Expr::Match(..) |
| 1019 | | Expr::While(..) |
| 1020 | | Expr::WhileLet(..) |
| 1021 | | Expr::Loop(..) |
| 1022 | | Expr::ForLoop(..) |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 1023 | | Expr::Async(..) |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1024 | | Expr::TryBlock(..) => false, |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 1025 | _ => true, |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 1026 | } |
| 1027 | } |
| 1028 | |
David Tolnay | b9c8e32 | 2016-09-23 20:48:37 -0700 | [diff] [blame] | 1029 | #[cfg(feature = "parsing")] |
| 1030 | pub mod parsing { |
| 1031 | use super::*; |
David Tolnay | a7d69fc | 2018-08-26 13:30:24 -0400 | [diff] [blame] | 1032 | use path::parsing::old_mod_style_path_segment; |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1033 | #[cfg(feature = "full")] |
David Tolnay | 056de30 | 2018-01-05 14:29:05 -0800 | [diff] [blame] | 1034 | use path::parsing::ty_no_eq_after; |
David Tolnay | b9c8e32 | 2016-09-23 20:48:37 -0700 | [diff] [blame] | 1035 | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1036 | use parse::{Parse, ParseStream, Result}; |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1037 | #[cfg(feature = "full")] |
David Tolnay | c5ab8c6 | 2017-12-26 16:43:39 -0500 | [diff] [blame] | 1038 | use parse_error; |
David Tolnay | 94d2b79 | 2018-04-29 12:26:10 -0700 | [diff] [blame] | 1039 | #[cfg(feature = "full")] |
| 1040 | use proc_macro2::TokenStream; |
David Tolnay | 94d2b79 | 2018-04-29 12:26:10 -0700 | [diff] [blame] | 1041 | use synom::Synom; |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 1042 | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1043 | macro_rules! named2 { |
| 1044 | ($name:ident ($($arg:ident : $argty:ty),*) -> $ret:ty, $($rest:tt)*) => { |
| 1045 | fn $name(input: ParseStream $(, $arg : $argty)*) -> Result<$ret> { |
| 1046 | named!(_synom ($($arg : $argty),*) -> $ret, $($rest)*); |
| 1047 | input.step_cursor(|cursor| _synom(*cursor $(, $arg)*)) |
| 1048 | } |
| 1049 | }; |
| 1050 | ($name:ident -> $ret:ty, $($rest:tt)*) => { |
| 1051 | fn $name(input: ParseStream) -> Result<$ret> { |
| 1052 | named!(_synom -> $ret, $($rest)*); |
| 1053 | input.step_cursor(|cursor| _synom(*cursor)) |
| 1054 | } |
| 1055 | }; |
| 1056 | } |
| 1057 | |
| 1058 | #[cfg(feature = "full")] |
| 1059 | macro_rules! ambiguous_expr { |
| 1060 | ($i:expr, $allow_struct:ident) => { |
| 1061 | shim!($i, ambiguous_expr, $allow_struct, AllowBlock(true)) |
| 1062 | }; |
| 1063 | } |
| 1064 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1065 | // When we're parsing expressions which occur before blocks, like in an if |
| 1066 | // statement's condition, we cannot parse a struct literal. |
| 1067 | // |
| 1068 | // Struct literals are ambiguous in certain positions |
| 1069 | // https://github.com/rust-lang/rfcs/pull/92 |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1070 | #[derive(Copy, Clone)] |
| 1071 | pub struct AllowStruct(bool); |
| 1072 | |
| 1073 | #[derive(Copy, Clone)] |
| 1074 | pub struct AllowBlock(bool); |
David Tolnay | af2557e | 2016-10-24 11:52:21 -0700 | [diff] [blame] | 1075 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1076 | // When we are parsing an optional suffix expression, we cannot allow blocks |
| 1077 | // if structs are not allowed. |
| 1078 | // |
| 1079 | // Example: |
| 1080 | // |
| 1081 | // if break {} {} |
| 1082 | // |
| 1083 | // is ambiguous between: |
| 1084 | // |
| 1085 | // if (break {}) {} |
| 1086 | // if (break) {} {} |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1087 | #[cfg(feature = "full")] |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1088 | macro_rules! opt_ambiguous_expr { |
| 1089 | ($i:expr, $allow_struct:ident) => { |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1090 | option!($i, shim!(ambiguous_expr, $allow_struct, AllowBlock($allow_struct.0))) |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1091 | }; |
| 1092 | } |
| 1093 | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1094 | impl Parse for Expr { |
| 1095 | fn parse(input: ParseStream) -> Result<Self> { |
| 1096 | ambiguous_expr(input, AllowStruct(true), AllowBlock(true)) |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1097 | } |
| 1098 | } |
| 1099 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1100 | #[cfg(feature = "full")] |
David Tolnay | 9fb0aed | 2018-08-27 10:23:12 -0700 | [diff] [blame] | 1101 | fn expr_no_struct(input: ParseStream) -> Result<Expr> { |
| 1102 | ambiguous_expr(input, AllowStruct(false), AllowBlock(true)) |
| 1103 | } |
David Tolnay | af2557e | 2016-10-24 11:52:21 -0700 | [diff] [blame] | 1104 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1105 | // Parse an arbitrary expression. |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1106 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1107 | fn ambiguous_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1108 | assign_expr(input, allow_struct, allow_block) |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1109 | } |
| 1110 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1111 | #[cfg(not(feature = "full"))] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1112 | fn ambiguous_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1113 | // NOTE: We intentionally skip assign_expr, placement_expr, and |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1114 | // range_expr as they are only parsed in full mode. |
| 1115 | or_expr(input, allow_struct, allow_block) |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1116 | } |
| 1117 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1118 | // Parse a left-associative binary operator. |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1119 | macro_rules! binop { |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1120 | ($name:ident, $next:ident, |$var:ident| $parse_op:expr) => { |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1121 | fn $name(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1122 | let $var = input; |
| 1123 | let mut e: Expr = $next(input, allow_struct, allow_block)?; |
| 1124 | while let Some(op) = $parse_op { |
| 1125 | e = Expr::Binary(ExprBinary { |
| 1126 | attrs: Vec::new(), |
| 1127 | left: Box::new(e), |
| 1128 | op: op, |
| 1129 | right: Box::new($next(input, allow_struct, AllowBlock(true))?), |
| 1130 | }); |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1131 | } |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1132 | Ok(e) |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1133 | } |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1134 | } |
David Tolnay | 54e854d | 2016-10-24 12:03:30 -0700 | [diff] [blame] | 1135 | } |
David Tolnay | b9c8e32 | 2016-09-23 20:48:37 -0700 | [diff] [blame] | 1136 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1137 | // <placement> = <placement> .. |
| 1138 | // <placement> += <placement> .. |
| 1139 | // <placement> -= <placement> .. |
| 1140 | // <placement> *= <placement> .. |
| 1141 | // <placement> /= <placement> .. |
| 1142 | // <placement> %= <placement> .. |
| 1143 | // <placement> ^= <placement> .. |
| 1144 | // <placement> &= <placement> .. |
| 1145 | // <placement> |= <placement> .. |
| 1146 | // <placement> <<= <placement> .. |
| 1147 | // <placement> >>= <placement> .. |
| 1148 | // |
| 1149 | // NOTE: This operator is right-associative. |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1150 | #[cfg(feature = "full")] |
David Tolnay | 1d2391c | 2018-08-27 10:29:28 -0700 | [diff] [blame] | 1151 | fn assign_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1152 | let mut e = placement_expr(input, allow_struct, allow_block)?; |
| 1153 | if input.peek(Token![=]) && !input.peek(Token![==]) && !input.peek(Token![=>]) { |
| 1154 | e = Expr::Assign(ExprAssign { |
| 1155 | attrs: Vec::new(), |
| 1156 | left: Box::new(e), |
| 1157 | eq_token: input.parse()?, |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1158 | // Recurse into self to parse right-associative operator. |
David Tolnay | 1d2391c | 2018-08-27 10:29:28 -0700 | [diff] [blame] | 1159 | right: Box::new(assign_expr(input, allow_struct, AllowBlock(true))?), |
| 1160 | }); |
| 1161 | } else if input.peek(Token![+=]) |
| 1162 | || input.peek(Token![-=]) |
| 1163 | || input.peek(Token![*=]) |
| 1164 | || input.peek(Token![/=]) |
| 1165 | || input.peek(Token![%=]) |
| 1166 | || input.peek(Token![^=]) |
| 1167 | || input.peek(Token![&=]) |
| 1168 | || input.peek(Token![|=]) |
| 1169 | || input.peek(Token![<<=]) |
| 1170 | || input.peek(Token![>>=]) |
| 1171 | { |
| 1172 | e = Expr::AssignOp(ExprAssignOp { |
| 1173 | attrs: Vec::new(), |
| 1174 | left: Box::new(e), |
| 1175 | op: BinOp::parse_assign_op(input)?, |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1176 | // Recurse into self to parse right-associative operator. |
David Tolnay | 1d2391c | 2018-08-27 10:29:28 -0700 | [diff] [blame] | 1177 | right: Box::new(assign_expr(input, allow_struct, AllowBlock(true))?), |
| 1178 | }); |
| 1179 | } |
| 1180 | Ok(e) |
| 1181 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1182 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1183 | // <range> <- <range> .. |
| 1184 | // |
| 1185 | // NOTE: The `in place { expr }` version of this syntax is parsed in |
| 1186 | // `atom_expr`, not here. |
| 1187 | // |
| 1188 | // NOTE: This operator is right-associative. |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1189 | #[cfg(feature = "full")] |
David Tolnay | 1da8c21 | 2018-08-27 10:35:50 -0700 | [diff] [blame] | 1190 | fn placement_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1191 | let mut e = range_expr(input, allow_struct, allow_block)?; |
| 1192 | if input.peek(Token![<-]) { |
| 1193 | e = Expr::InPlace(ExprInPlace { |
| 1194 | attrs: Vec::new(), |
| 1195 | place: Box::new(e), |
| 1196 | arrow_token: input.parse()?, |
| 1197 | value: Box::new(placement_expr(input, allow_struct, AllowBlock(true))?), |
| 1198 | }); |
| 1199 | } |
| 1200 | Ok(e) |
| 1201 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1202 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1203 | // <or> ... <or> .. |
| 1204 | // <or> .. <or> .. |
| 1205 | // <or> .. |
| 1206 | // |
| 1207 | // NOTE: This is currently parsed oddly - I'm not sure of what the exact |
| 1208 | // rules are for parsing these expressions are, but this is not correct. |
| 1209 | // For example, `a .. b .. c` is not a legal expression. It should not |
| 1210 | // be parsed as either `(a .. b) .. c` or `a .. (b .. c)` apparently. |
| 1211 | // |
| 1212 | // NOTE: The form of ranges which don't include a preceding expression are |
| 1213 | // parsed by `atom_expr`, rather than by this function. |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1214 | #[cfg(feature = "full")] |
David Tolnay | c4c631e | 2018-08-27 10:44:37 -0700 | [diff] [blame] | 1215 | fn range_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1216 | let mut e = or_expr(input, allow_struct, allow_block)?; |
| 1217 | while input.peek(Token![..]) { |
| 1218 | e = Expr::Range(ExprRange { |
| 1219 | attrs: Vec::new(), |
| 1220 | from: Some(Box::new(e)), |
| 1221 | limits: input.parse()?, |
| 1222 | to: { |
| 1223 | if input.is_empty() |
| 1224 | || input.peek(Token![,]) |
| 1225 | || input.peek(Token![;]) |
| 1226 | || !allow_struct.0 && input.peek(token::Brace) |
| 1227 | { |
| 1228 | None |
| 1229 | } else { |
| 1230 | // We don't want to allow blocks here if we don't allow |
| 1231 | // structs. See the reasoning for `opt_ambiguous_expr!` |
| 1232 | // above. |
| 1233 | Some(Box::new(or_expr(input, allow_struct, AllowBlock(allow_struct.0))?)) |
| 1234 | } |
| 1235 | }, |
| 1236 | }); |
| 1237 | } |
| 1238 | Ok(e) |
| 1239 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1240 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1241 | // <and> || <and> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1242 | binop!(or_expr, and_expr, |input| { |
| 1243 | if input.peek(Token![||]) { |
| 1244 | Some(BinOp::Or(input.parse()?)) |
| 1245 | } else { |
| 1246 | None |
| 1247 | } |
| 1248 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1249 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1250 | // <compare> && <compare> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1251 | binop!(and_expr, compare_expr, |input| { |
| 1252 | if input.peek(Token![&&]) { |
| 1253 | Some(BinOp::And(input.parse()?)) |
| 1254 | } else { |
| 1255 | None |
| 1256 | } |
| 1257 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1258 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1259 | // <bitor> == <bitor> ... |
| 1260 | // <bitor> != <bitor> ... |
| 1261 | // <bitor> >= <bitor> ... |
| 1262 | // <bitor> <= <bitor> ... |
| 1263 | // <bitor> > <bitor> ... |
| 1264 | // <bitor> < <bitor> ... |
| 1265 | // |
| 1266 | // NOTE: This operator appears to be parsed as left-associative, but errors |
| 1267 | // if it is used in a non-associative manner. |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1268 | binop!(compare_expr, bitor_expr, |input| { |
| 1269 | if input.peek(Token![==]) { |
| 1270 | Some(BinOp::Eq(input.parse()?)) |
| 1271 | } else if input.peek(Token![!=]) { |
| 1272 | Some(BinOp::Ne(input.parse()?)) |
| 1273 | // must be before `<` |
| 1274 | } else if input.peek(Token![<=]) { |
| 1275 | Some(BinOp::Le(input.parse()?)) |
| 1276 | // must be before `>` |
| 1277 | } else if input.peek(Token![>=]) { |
| 1278 | Some(BinOp::Ge(input.parse()?)) |
| 1279 | } else if input.peek(Token![<]) && !input.peek(Token![<<]) && !input.peek(Token![<-]) { |
| 1280 | Some(BinOp::Lt(input.parse()?)) |
| 1281 | } else if input.peek(Token![>]) && !input.peek(Token![>>]) { |
| 1282 | Some(BinOp::Gt(input.parse()?)) |
| 1283 | } else { |
| 1284 | None |
| 1285 | } |
| 1286 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1287 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1288 | // <bitxor> | <bitxor> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1289 | binop!(bitor_expr, bitxor_expr, |input| { |
| 1290 | if input.peek(Token![|]) && !input.peek(Token![||]) && !input.peek(Token![|=]) { |
| 1291 | Some(BinOp::BitOr(input.parse()?)) |
| 1292 | } else { |
| 1293 | None |
| 1294 | } |
| 1295 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1296 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1297 | // <bitand> ^ <bitand> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1298 | binop!(bitxor_expr, bitand_expr, |input| { |
| 1299 | if input.peek(Token![^]) && !input.peek(Token![^=]) { |
| 1300 | Some(BinOp::BitXor(input.parse()?)) |
| 1301 | } else { |
| 1302 | None |
| 1303 | } |
| 1304 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1305 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1306 | // <shift> & <shift> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1307 | binop!(bitand_expr, shift_expr, |input| { |
| 1308 | if input.peek(Token![&]) && !input.peek(Token![&&]) && !input.peek(Token![&=]) { |
| 1309 | Some(BinOp::BitAnd(input.parse()?)) |
| 1310 | } else { |
| 1311 | None |
| 1312 | } |
| 1313 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1314 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1315 | // <arith> << <arith> ... |
| 1316 | // <arith> >> <arith> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1317 | binop!(shift_expr, arith_expr, |input| { |
| 1318 | if input.peek(Token![<<]) && !input.peek(Token![<<=]) { |
| 1319 | Some(BinOp::Shl(input.parse()?)) |
| 1320 | } else if input.peek(Token![>>]) && !input.peek(Token![>>=]) { |
| 1321 | Some(BinOp::Shr(input.parse()?)) |
| 1322 | } else { |
| 1323 | None |
| 1324 | } |
| 1325 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1326 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1327 | // <term> + <term> ... |
| 1328 | // <term> - <term> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1329 | binop!(arith_expr, term_expr, |input| { |
| 1330 | if input.peek(Token![+]) && !input.peek(Token![+=]) { |
| 1331 | Some(BinOp::Add(input.parse()?)) |
| 1332 | } else if input.peek(Token![-]) && !input.peek(Token![-=]) { |
| 1333 | Some(BinOp::Sub(input.parse()?)) |
| 1334 | } else { |
| 1335 | None |
| 1336 | } |
| 1337 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1338 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1339 | // <cast> * <cast> ... |
| 1340 | // <cast> / <cast> ... |
| 1341 | // <cast> % <cast> ... |
David Tolnay | 378175c | 2018-08-27 10:01:12 -0700 | [diff] [blame] | 1342 | binop!(term_expr, cast_expr, |input| { |
| 1343 | if input.peek(Token![*]) && !input.peek(Token![*=]) { |
| 1344 | Some(BinOp::Mul(input.parse()?)) |
| 1345 | } else if input.peek(Token![/]) && !input.peek(Token![/=]) { |
| 1346 | Some(BinOp::Div(input.parse()?)) |
| 1347 | } else if input.peek(Token![%]) && !input.peek(Token![%=]) { |
| 1348 | Some(BinOp::Rem(input.parse()?)) |
| 1349 | } else { |
| 1350 | None |
| 1351 | } |
| 1352 | }); |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1353 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1354 | // <unary> as <ty> |
| 1355 | // <unary> : <ty> |
David Tolnay | 0cf94f2 | 2017-12-28 23:46:26 -0500 | [diff] [blame] | 1356 | #[cfg(feature = "full")] |
David Tolnay | af5a811 | 2018-08-27 10:52:20 -0700 | [diff] [blame] | 1357 | fn cast_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1358 | let mut e = unary_expr(input, allow_struct, allow_block)?; |
| 1359 | loop { |
| 1360 | if input.peek(Token![as]) { |
| 1361 | e = Expr::Cast(ExprCast { |
| 1362 | attrs: Vec::new(), |
| 1363 | expr: Box::new(e), |
| 1364 | as_token: input.parse()?, |
| 1365 | // We can't accept `A + B` in cast expressions, as it's |
| 1366 | // ambiguous with the + expression. |
| 1367 | ty: Box::new(input.call(Type::without_plus)?), |
| 1368 | }); |
| 1369 | } else if input.peek(Token![:]) { |
| 1370 | e = Expr::Type(ExprType { |
| 1371 | attrs: Vec::new(), |
| 1372 | expr: Box::new(e), |
| 1373 | colon_token: input.parse()?, |
| 1374 | // We can't accept `A + B` in cast expressions, as it's |
| 1375 | // ambiguous with the + expression. |
| 1376 | ty: Box::new(input.call(Type::without_plus)?), |
| 1377 | }); |
| 1378 | } else { |
| 1379 | break; |
| 1380 | } |
| 1381 | } |
| 1382 | Ok(e) |
| 1383 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1384 | |
David Tolnay | 0cf94f2 | 2017-12-28 23:46:26 -0500 | [diff] [blame] | 1385 | // <unary> as <ty> |
| 1386 | #[cfg(not(feature = "full"))] |
David Tolnay | af5a811 | 2018-08-27 10:52:20 -0700 | [diff] [blame] | 1387 | fn cast_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1388 | let mut e = unary_expr(input, allow_struct, allow_block)?; |
| 1389 | while input.peek(Token![as]) { |
| 1390 | e = Expr::Cast(ExprCast { |
| 1391 | attrs: Vec::new(), |
| 1392 | expr: Box::new(e), |
| 1393 | as_token: input.parse()?, |
| 1394 | // We can't accept `A + B` in cast expressions, as it's |
| 1395 | // ambiguous with the + expression. |
| 1396 | ty: Box::new(input.call(Type::without_plus)?), |
| 1397 | }); |
| 1398 | } |
| 1399 | Ok(e) |
| 1400 | } |
David Tolnay | 0cf94f2 | 2017-12-28 23:46:26 -0500 | [diff] [blame] | 1401 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1402 | // <UnOp> <trailer> |
| 1403 | // & <trailer> |
| 1404 | // &mut <trailer> |
| 1405 | // box <trailer> |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1406 | #[cfg(feature = "full")] |
David Tolnay | 377263f | 2018-08-27 13:48:30 -0700 | [diff] [blame] | 1407 | fn unary_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1408 | let ahead = input.fork(); |
| 1409 | ahead.call(Attribute::parse_outer)?; |
| 1410 | if ahead.peek(Token![&]) |
| 1411 | || ahead.peek(Token![box]) |
| 1412 | || ahead.peek(Token![*]) |
| 1413 | || ahead.peek(Token![!]) |
| 1414 | || ahead.peek(Token![-]) |
| 1415 | { |
| 1416 | let attrs = input.call(Attribute::parse_outer)?; |
| 1417 | if input.peek(Token![&]) { |
| 1418 | Ok(Expr::Reference(ExprReference { |
| 1419 | attrs: attrs, |
| 1420 | and_token: input.parse()?, |
| 1421 | mutability: input.parse()?, |
| 1422 | expr: Box::new(unary_expr(input, allow_struct, AllowBlock(true))?), |
| 1423 | })) |
| 1424 | } else if input.peek(Token![box]) { |
| 1425 | Ok(Expr::Box(ExprBox { |
| 1426 | attrs: attrs, |
| 1427 | box_token: input.parse()?, |
| 1428 | expr: Box::new(unary_expr(input, allow_struct, AllowBlock(true))?), |
| 1429 | })) |
| 1430 | } else { |
| 1431 | Ok(Expr::Unary(ExprUnary { |
| 1432 | attrs: attrs, |
| 1433 | op: input.parse()?, |
| 1434 | expr: Box::new(unary_expr(input, allow_struct, AllowBlock(true))?), |
| 1435 | })) |
| 1436 | } |
| 1437 | } else { |
| 1438 | trailer_expr(input, allow_struct, allow_block) |
| 1439 | } |
| 1440 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1441 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1442 | // XXX: This duplication is ugly |
| 1443 | #[cfg(not(feature = "full"))] |
David Tolnay | 377263f | 2018-08-27 13:48:30 -0700 | [diff] [blame] | 1444 | fn unary_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1445 | let ahead = input.fork(); |
| 1446 | ahead.call(Attribute::parse_outer)?; |
| 1447 | if ahead.peek(Token![*]) || ahead.peek(Token![!]) || ahead.peek(Token![-]) { |
| 1448 | Ok(Expr::Unary(ExprUnary { |
| 1449 | attrs: input.call(Attribute::parse_outer)?, |
| 1450 | op: input.parse()?, |
| 1451 | expr: Box::new(unary_expr(input, allow_struct, AllowBlock(true))?), |
| 1452 | })) |
| 1453 | } else { |
| 1454 | trailer_expr(input, allow_struct, allow_block) |
| 1455 | } |
| 1456 | } |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1457 | |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 1458 | #[cfg(feature = "full")] |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1459 | fn take_outer(attrs: &mut Vec<Attribute>) -> Vec<Attribute> { |
| 1460 | let mut outer = Vec::new(); |
| 1461 | let mut inner = Vec::new(); |
| 1462 | for attr in mem::replace(attrs, Vec::new()) { |
| 1463 | match attr.style { |
| 1464 | AttrStyle::Outer => outer.push(attr), |
| 1465 | AttrStyle::Inner(_) => inner.push(attr), |
| 1466 | } |
| 1467 | } |
| 1468 | *attrs = inner; |
| 1469 | outer |
| 1470 | } |
| 1471 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1472 | // <atom> (..<args>) ... |
| 1473 | // <atom> . <ident> (..<args>) ... |
| 1474 | // <atom> . <ident> ... |
| 1475 | // <atom> . <lit> ... |
| 1476 | // <atom> [ <expr> ] ... |
| 1477 | // <atom> ? ... |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1478 | #[cfg(feature = "full")] |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1479 | fn trailer_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1480 | let mut e = atom_expr(input, allow_struct, allow_block)?; |
| 1481 | |
| 1482 | let mut attrs = e.replace_attrs(Vec::new()); |
| 1483 | let outer_attrs = take_outer(&mut attrs); |
| 1484 | e.replace_attrs(attrs); |
| 1485 | |
| 1486 | loop { |
| 1487 | if input.peek(token::Paren) { |
| 1488 | let content; |
| 1489 | e = Expr::Call(ExprCall { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1490 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1491 | func: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1492 | paren_token: parenthesized!(content in input), |
| 1493 | args: content.parse_terminated(<Expr as Parse>::parse)?, |
| 1494 | }); |
| 1495 | } else if input.peek(Token![.]) && !input.peek(Token![..]) { |
| 1496 | let dot_token: Token![.] = input.parse()?; |
| 1497 | let member: Member = input.parse()?; |
| 1498 | let turbofish = if member.is_named() && input.peek(Token![::]) { |
| 1499 | Some(MethodTurbofish { |
| 1500 | colon2_token: input.parse()?, |
| 1501 | lt_token: input.parse()?, |
| 1502 | args: { |
| 1503 | let mut args = Punctuated::new(); |
| 1504 | loop { |
| 1505 | if input.peek(Token![>]) { |
| 1506 | break; |
| 1507 | } |
| 1508 | let value = input.parse()?; |
| 1509 | args.push_value(value); |
| 1510 | if input.peek(Token![>]) { |
| 1511 | break; |
| 1512 | } |
| 1513 | let punct = input.parse()?; |
| 1514 | args.push_punct(punct); |
| 1515 | } |
| 1516 | args |
| 1517 | }, |
| 1518 | gt_token: input.parse()?, |
| 1519 | }) |
| 1520 | } else { |
| 1521 | None |
| 1522 | }; |
| 1523 | |
| 1524 | if turbofish.is_some() || input.peek(token::Paren) { |
| 1525 | if let Member::Named(method) = member { |
| 1526 | let content; |
| 1527 | e = Expr::MethodCall(ExprMethodCall { |
| 1528 | attrs: Vec::new(), |
| 1529 | receiver: Box::new(e), |
| 1530 | dot_token: dot_token, |
| 1531 | method: method, |
| 1532 | turbofish: turbofish, |
| 1533 | paren_token: parenthesized!(content in input), |
| 1534 | args: content.parse_terminated(<Expr as Parse>::parse)?, |
| 1535 | }); |
| 1536 | continue; |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | e = Expr::Field(ExprField { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1541 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1542 | base: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1543 | dot_token: dot_token, |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 1544 | member: member, |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1545 | }); |
| 1546 | } else if input.peek(token::Bracket) { |
| 1547 | let content; |
| 1548 | e = Expr::Index(ExprIndex { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1549 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1550 | expr: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1551 | bracket_token: bracketed!(content in input), |
| 1552 | index: content.parse()?, |
| 1553 | }); |
| 1554 | } else if input.peek(Token![?]) { |
| 1555 | e = Expr::Try(ExprTry { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1556 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1557 | expr: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1558 | question_token: input.parse()?, |
| 1559 | }); |
| 1560 | } else { |
| 1561 | break; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | let mut attrs = outer_attrs; |
| 1566 | attrs.extend(e.replace_attrs(Vec::new())); |
| 1567 | e.replace_attrs(attrs); |
| 1568 | Ok(e) |
| 1569 | } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1570 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1571 | // XXX: Duplication == ugly |
| 1572 | #[cfg(not(feature = "full"))] |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1573 | fn trailer_expr(input: ParseStream, allow_struct: AllowStruct, allow_block: AllowBlock) -> Result<Expr> { |
| 1574 | let mut e = atom_expr(input, allow_struct, allow_block)?; |
| 1575 | |
| 1576 | loop { |
| 1577 | if input.peek(token::Paren) { |
| 1578 | let content; |
| 1579 | e = Expr::Call(ExprCall { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1580 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1581 | func: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1582 | paren_token: parenthesized!(content in input), |
| 1583 | args: content.parse_terminated(<Expr as Parse>::parse)?, |
| 1584 | }); |
| 1585 | } else if input.peek(Token![.]) { |
| 1586 | e = Expr::Field(ExprField { |
David Tolnay | d514774 | 2018-06-30 10:09:52 -0700 | [diff] [blame] | 1587 | attrs: Vec::new(), |
| 1588 | base: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1589 | dot_token: input.parse()?, |
| 1590 | member: input.parse()?, |
| 1591 | }); |
| 1592 | } else if input.peek(token::Bracket) { |
| 1593 | let content; |
| 1594 | e = Expr::Index(ExprIndex { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1595 | attrs: Vec::new(), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 1596 | expr: Box::new(e), |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1597 | bracket_token: bracketed!(content in input), |
| 1598 | index: content.parse()?, |
| 1599 | }); |
| 1600 | } else { |
| 1601 | break; |
| 1602 | } |
| 1603 | } |
| 1604 | |
| 1605 | Ok(e) |
| 1606 | } |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1607 | |
David Tolnay | a454c8f | 2018-01-07 01:01:10 -0800 | [diff] [blame] | 1608 | // Parse all atomic expressions which don't have to worry about precedence |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 1609 | // interactions, as they are fully contained. |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1610 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1611 | named2!(atom_expr(allow_struct: AllowStruct, allow_block: AllowBlock) -> Expr, alt!( |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1612 | syn!(ExprGroup) => { Expr::Group } // must be placed first |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 1613 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1614 | syn!(ExprLit) => { Expr::Lit } // must be before expr_struct |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1615 | | |
Yusuke Sasaki | 851062f | 2018-08-01 06:28:28 +0900 | [diff] [blame] | 1616 | // must be before ExprStruct |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 1617 | syn!(ExprAsync) => { Expr::Async } |
Yusuke Sasaki | 851062f | 2018-08-01 06:28:28 +0900 | [diff] [blame] | 1618 | | |
David Tolnay | f717705 | 2018-08-24 15:31:50 -0400 | [diff] [blame] | 1619 | // must be before ExprStruct |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1620 | syn!(ExprTryBlock) => { Expr::TryBlock } |
David Tolnay | f717705 | 2018-08-24 15:31:50 -0400 | [diff] [blame] | 1621 | | |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1622 | // must be before expr_path |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1623 | cond_reduce!(allow_struct.0, syn!(ExprStruct)) => { Expr::Struct } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1624 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1625 | syn!(ExprParen) => { Expr::Paren } // must be before expr_tup |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1626 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1627 | syn!(ExprMacro) => { Expr::Macro } // must be before expr_path |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1628 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1629 | shim!(expr_break, allow_struct) // must be before expr_path |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1630 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1631 | syn!(ExprContinue) => { Expr::Continue } // must be before expr_path |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1632 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1633 | shim!(expr_ret, allow_struct) // must be before expr_path |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1634 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1635 | syn!(ExprArray) => { Expr::Array } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1636 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1637 | syn!(ExprTuple) => { Expr::Tuple } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1638 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1639 | syn!(ExprIf) => { Expr::If } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1640 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1641 | syn!(ExprIfLet) => { Expr::IfLet } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1642 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1643 | syn!(ExprWhile) => { Expr::While } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1644 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1645 | syn!(ExprWhileLet) => { Expr::WhileLet } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1646 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1647 | syn!(ExprForLoop) => { Expr::ForLoop } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1648 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1649 | syn!(ExprLoop) => { Expr::Loop } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1650 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1651 | syn!(ExprMatch) => { Expr::Match } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1652 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1653 | syn!(ExprYield) => { Expr::Yield } |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 1654 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1655 | syn!(ExprUnsafe) => { Expr::Unsafe } |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 1656 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1657 | shim!(expr_closure, allow_struct) |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1658 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1659 | cond_reduce!(allow_block.0, syn!(ExprBlock)) => { Expr::Block } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1660 | | |
| 1661 | // NOTE: This is the prefix-form of range |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1662 | shim!(expr_range, allow_struct) |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1663 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1664 | syn!(ExprPath) => { Expr::Path } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1665 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1666 | syn!(ExprRepeat) => { Expr::Repeat } |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 1667 | )); |
| 1668 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1669 | #[cfg(not(feature = "full"))] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1670 | named2!(atom_expr(_allow_struct: AllowStruct, _allow_block: AllowBlock) -> Expr, alt!( |
David Tolnay | e98775f | 2017-12-28 23:17:00 -0500 | [diff] [blame] | 1671 | syn!(ExprLit) => { Expr::Lit } |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1672 | | |
David Tolnay | 9374bc0 | 2018-01-27 18:49:36 -0800 | [diff] [blame] | 1673 | syn!(ExprParen) => { Expr::Paren } |
| 1674 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1675 | syn!(ExprPath) => { Expr::Path } |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1676 | )); |
| 1677 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1678 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1679 | named2!(expr_nosemi -> Expr, do_parse!( |
David Tolnay | 313a36f | 2018-04-29 20:13:04 -0700 | [diff] [blame] | 1680 | nosemi: alt!( |
| 1681 | syn!(ExprIf) => { Expr::If } |
| 1682 | | |
| 1683 | syn!(ExprIfLet) => { Expr::IfLet } |
| 1684 | | |
| 1685 | syn!(ExprWhile) => { Expr::While } |
| 1686 | | |
| 1687 | syn!(ExprWhileLet) => { Expr::WhileLet } |
| 1688 | | |
| 1689 | syn!(ExprForLoop) => { Expr::ForLoop } |
| 1690 | | |
| 1691 | syn!(ExprLoop) => { Expr::Loop } |
| 1692 | | |
| 1693 | syn!(ExprMatch) => { Expr::Match } |
| 1694 | | |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1695 | syn!(ExprTryBlock) => { Expr::TryBlock } |
David Tolnay | 313a36f | 2018-04-29 20:13:04 -0700 | [diff] [blame] | 1696 | | |
| 1697 | syn!(ExprYield) => { Expr::Yield } |
| 1698 | | |
| 1699 | syn!(ExprUnsafe) => { Expr::Unsafe } |
| 1700 | | |
| 1701 | syn!(ExprBlock) => { Expr::Block } |
| 1702 | ) >> |
| 1703 | // If the next token is a `.` or a `?` it is special-cased to parse |
| 1704 | // as an expression instead of a blockexpression. |
| 1705 | not!(punct!(.)) >> |
| 1706 | not!(punct!(?)) >> |
David Tolnay | 83ddebb | 2018-05-05 00:29:13 -0700 | [diff] [blame] | 1707 | (nosemi) |
David Tolnay | 313a36f | 2018-04-29 20:13:04 -0700 | [diff] [blame] | 1708 | )); |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 1709 | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1710 | impl Synom for ExprLit { |
David Tolnay | eb981bb | 2018-07-21 19:31:38 -0700 | [diff] [blame] | 1711 | #[cfg(not(feature = "full"))] |
| 1712 | named!(parse -> Self, do_parse!( |
| 1713 | lit: syn!(Lit) >> |
| 1714 | (ExprLit { |
| 1715 | attrs: Vec::new(), |
| 1716 | lit: lit, |
| 1717 | }) |
| 1718 | )); |
| 1719 | |
| 1720 | #[cfg(feature = "full")] |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1721 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1722 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1723 | lit: syn!(Lit) >> |
| 1724 | (ExprLit { |
David Tolnay | 73c9b52 | 2018-07-21 15:58:40 -0700 | [diff] [blame] | 1725 | attrs: attrs, |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1726 | lit: lit, |
| 1727 | }) |
| 1728 | )); |
| 1729 | } |
| 1730 | |
| 1731 | #[cfg(feature = "full")] |
| 1732 | impl Synom for ExprMacro { |
| 1733 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1734 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1735 | mac: syn!(Macro) >> |
| 1736 | (ExprMacro { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1737 | attrs: attrs, |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1738 | mac: mac, |
| 1739 | }) |
| 1740 | )); |
| 1741 | } |
| 1742 | |
David Tolnay | e98775f | 2017-12-28 23:17:00 -0500 | [diff] [blame] | 1743 | #[cfg(feature = "full")] |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 1744 | impl Synom for ExprGroup { |
| 1745 | named!(parse -> Self, do_parse!( |
David Tolnay | a7d69fc | 2018-08-26 13:30:24 -0400 | [diff] [blame] | 1746 | e: old_grouped!(syn!(Expr)) >> |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 1747 | (ExprGroup { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1748 | attrs: Vec::new(), |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1749 | expr: Box::new(e.1), |
| 1750 | group_token: e.0, |
David Tolnay | bb4ca9f | 2017-12-26 12:28:58 -0500 | [diff] [blame] | 1751 | }) |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 1752 | )); |
| 1753 | } |
| 1754 | |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1755 | impl Synom for ExprParen { |
David Tolnay | eb981bb | 2018-07-21 19:31:38 -0700 | [diff] [blame] | 1756 | #[cfg(not(feature = "full"))] |
| 1757 | named!(parse -> Self, do_parse!( |
| 1758 | e: parens!(syn!(Expr)) >> |
| 1759 | (ExprParen { |
| 1760 | attrs: Vec::new(), |
| 1761 | paren_token: e.0, |
| 1762 | expr: Box::new(e.1), |
| 1763 | }) |
| 1764 | )); |
| 1765 | |
| 1766 | #[cfg(feature = "full")] |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1767 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1768 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1769 | e: parens!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1770 | many0!(Attribute::old_parse_inner), |
David Tolnay | 0235ba6 | 2018-07-21 19:20:50 -0700 | [diff] [blame] | 1771 | syn!(Expr), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1772 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1773 | (ExprParen { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1774 | attrs: { |
| 1775 | let mut attrs = outer_attrs; |
| 1776 | attrs.extend((e.1).0); |
| 1777 | attrs |
| 1778 | }, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1779 | paren_token: e.0, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1780 | expr: Box::new((e.1).1), |
David Tolnay | bb4ca9f | 2017-12-26 12:28:58 -0500 | [diff] [blame] | 1781 | }) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1782 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1783 | } |
David Tolnay | 89e0567 | 2016-10-02 14:39:42 -0700 | [diff] [blame] | 1784 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1785 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1786 | impl Synom for ExprArray { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1787 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1788 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1789 | elems: brackets!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1790 | many0!(Attribute::old_parse_inner), |
David Tolnay | 0235ba6 | 2018-07-21 19:20:50 -0700 | [diff] [blame] | 1791 | call!(Punctuated::parse_terminated), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1792 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1793 | (ExprArray { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1794 | attrs: { |
| 1795 | let mut attrs = outer_attrs; |
| 1796 | attrs.extend((elems.1).0); |
| 1797 | attrs |
| 1798 | }, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1799 | bracket_token: elems.0, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1800 | elems: (elems.1).1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1801 | }) |
| 1802 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1803 | } |
David Tolnay | fa0edf2 | 2016-09-23 22:58:24 -0700 | [diff] [blame] | 1804 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1805 | #[cfg(feature = "full")] |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1806 | impl Parse for GenericMethodArgument { |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 1807 | // TODO parse const generics as well |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 1808 | fn parse(input: ParseStream) -> Result<Self> { |
| 1809 | input.parse_synom(ty_no_eq_after).map(GenericMethodArgument::Type) |
| 1810 | } |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 1811 | } |
| 1812 | |
| 1813 | #[cfg(feature = "full")] |
David Tolnay | 0536258 | 2017-12-26 01:33:57 -0500 | [diff] [blame] | 1814 | impl Synom for ExprTuple { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1815 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1816 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1817 | elems: parens!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1818 | many0!(Attribute::old_parse_inner), |
David Tolnay | 0235ba6 | 2018-07-21 19:20:50 -0700 | [diff] [blame] | 1819 | call!(Punctuated::parse_terminated), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1820 | )) >> |
David Tolnay | 0536258 | 2017-12-26 01:33:57 -0500 | [diff] [blame] | 1821 | (ExprTuple { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1822 | attrs: { |
| 1823 | let mut attrs = outer_attrs; |
| 1824 | attrs.extend((elems.1).0); |
| 1825 | attrs |
| 1826 | }, |
| 1827 | elems: (elems.1).1, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1828 | paren_token: elems.0, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1829 | }) |
| 1830 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1831 | } |
David Tolnay | fa0edf2 | 2016-09-23 22:58:24 -0700 | [diff] [blame] | 1832 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1833 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1834 | impl Synom for ExprIfLet { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1835 | named!(parse -> Self, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1836 | if_: keyword!(if) >> |
| 1837 | let_: keyword!(let) >> |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 1838 | pats: call!(Punctuated::parse_separated_nonempty) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1839 | eq: punct!(=) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1840 | cond: shim!(expr_no_struct) >> |
| 1841 | then_block: braces!(Block::old_parse_within) >> |
| 1842 | else_block: option!(shim!(else_block)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1843 | (ExprIfLet { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1844 | attrs: Vec::new(), |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 1845 | pats: pats, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1846 | let_token: let_, |
| 1847 | eq_token: eq, |
| 1848 | expr: Box::new(cond), |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1849 | then_branch: Block { |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1850 | brace_token: then_block.0, |
| 1851 | stmts: then_block.1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1852 | }, |
| 1853 | if_token: if_, |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1854 | else_branch: else_block, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1855 | }) |
| 1856 | )); |
David Tolnay | 29f9ce1 | 2016-10-02 20:58:40 -0700 | [diff] [blame] | 1857 | } |
| 1858 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1859 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1860 | impl Synom for ExprIf { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1861 | named!(parse -> Self, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1862 | if_: keyword!(if) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1863 | cond: shim!(expr_no_struct) >> |
| 1864 | then_block: braces!(Block::old_parse_within) >> |
| 1865 | else_block: option!(shim!(else_block)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1866 | (ExprIf { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1867 | attrs: Vec::new(), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1868 | cond: Box::new(cond), |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1869 | then_branch: Block { |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1870 | brace_token: then_block.0, |
| 1871 | stmts: then_block.1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1872 | }, |
| 1873 | if_token: if_, |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1874 | else_branch: else_block, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1875 | }) |
| 1876 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1877 | } |
David Tolnay | bb6feae | 2016-10-02 21:25:20 -0700 | [diff] [blame] | 1878 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1879 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1880 | named2!(else_block -> (Token![else], Box<Expr>), do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1881 | else_: keyword!(else) >> |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1882 | expr: alt!( |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1883 | syn!(ExprIf) => { Expr::If } |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1884 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1885 | syn!(ExprIfLet) => { Expr::IfLet } |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1886 | | |
| 1887 | do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1888 | else_block: braces!(Block::old_parse_within) >> |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1889 | (Expr::Block(ExprBlock { |
| 1890 | attrs: Vec::new(), |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 1891 | label: None, |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1892 | block: Block { |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1893 | brace_token: else_block.0, |
| 1894 | stmts: else_block.1, |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1895 | }, |
| 1896 | })) |
David Tolnay | 939766a | 2016-09-23 23:48:12 -0700 | [diff] [blame] | 1897 | ) |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1898 | ) >> |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 1899 | (else_, Box::new(expr)) |
David Tolnay | 939766a | 2016-09-23 23:48:12 -0700 | [diff] [blame] | 1900 | )); |
| 1901 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1902 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1903 | impl Synom for ExprForLoop { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1904 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1905 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 1906 | label: option!(syn!(Label)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1907 | for_: keyword!(for) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1908 | pat: syn!(Pat) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1909 | in_: keyword!(in) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1910 | expr: shim!(expr_no_struct) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1911 | block: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1912 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1913 | shim!(Block::parse_within), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1914 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1915 | (ExprForLoop { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1916 | attrs: { |
| 1917 | let mut attrs = outer_attrs; |
| 1918 | attrs.extend((block.1).0); |
| 1919 | attrs |
| 1920 | }, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 1921 | label: label, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1922 | for_token: for_, |
| 1923 | pat: Box::new(pat), |
| 1924 | in_token: in_, |
| 1925 | expr: Box::new(expr), |
| 1926 | body: Block { |
| 1927 | brace_token: block.0, |
| 1928 | stmts: (block.1).1, |
| 1929 | }, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1930 | }) |
| 1931 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1932 | } |
Gregory Katz | e5f3568 | 2016-09-27 14:20:55 -0400 | [diff] [blame] | 1933 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1934 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1935 | impl Synom for ExprLoop { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1936 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1937 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 1938 | label: option!(syn!(Label)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1939 | loop_: keyword!(loop) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1940 | block: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1941 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1942 | shim!(Block::parse_within), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1943 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1944 | (ExprLoop { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1945 | attrs: { |
| 1946 | let mut attrs = outer_attrs; |
| 1947 | attrs.extend((block.1).0); |
| 1948 | attrs |
| 1949 | }, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 1950 | label: label, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1951 | loop_token: loop_, |
| 1952 | body: Block { |
| 1953 | brace_token: block.0, |
| 1954 | stmts: (block.1).1, |
| 1955 | }, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1956 | }) |
| 1957 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1958 | } |
| 1959 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1960 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1961 | impl Synom for ExprMatch { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1962 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1963 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 1964 | match_: keyword!(match) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 1965 | obj: shim!(expr_no_struct) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1966 | braced_content: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 1967 | many0!(Attribute::old_parse_inner), |
David Tolnay | 0235ba6 | 2018-07-21 19:20:50 -0700 | [diff] [blame] | 1968 | many0!(syn!(Arm)), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1969 | )) >> |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1970 | (ExprMatch { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1971 | attrs: { |
| 1972 | let mut attrs = outer_attrs; |
| 1973 | attrs.extend((braced_content.1).0); |
| 1974 | attrs |
| 1975 | }, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 1976 | expr: Box::new(obj), |
| 1977 | match_token: match_, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 1978 | brace_token: braced_content.0, |
| 1979 | arms: (braced_content.1).1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1980 | }) |
| 1981 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1982 | } |
David Tolnay | 1978c67 | 2016-10-27 22:05:52 -0700 | [diff] [blame] | 1983 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1984 | #[cfg(feature = "full")] |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1985 | impl Synom for ExprTryBlock { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1986 | named!(parse -> Self, do_parse!( |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1987 | try_token: keyword!(try) >> |
| 1988 | block: syn!(Block) >> |
| 1989 | (ExprTryBlock { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 1990 | attrs: Vec::new(), |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 1991 | try_token: try_token, |
| 1992 | block: block, |
David Tolnay | bb4ca9f | 2017-12-26 12:28:58 -0500 | [diff] [blame] | 1993 | }) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 1994 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 1995 | } |
Arnavion | 02ef13f | 2017-04-25 00:54:31 -0700 | [diff] [blame] | 1996 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 1997 | #[cfg(feature = "full")] |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 1998 | impl Synom for ExprYield { |
| 1999 | named!(parse -> Self, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2000 | yield_: keyword!(yield) >> |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 2001 | expr: option!(syn!(Expr)) >> |
| 2002 | (ExprYield { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2003 | attrs: Vec::new(), |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 2004 | yield_token: yield_, |
| 2005 | expr: expr.map(Box::new), |
| 2006 | }) |
| 2007 | )); |
| 2008 | } |
| 2009 | |
| 2010 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2011 | impl Synom for Arm { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2012 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2013 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 18cc4d4 | 2018-03-31 18:47:20 +0200 | [diff] [blame] | 2014 | leading_vert: option!(punct!(|)) >> |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2015 | pats: call!(Punctuated::parse_separated_nonempty) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2016 | guard: option!(tuple!(keyword!(if), syn!(Expr))) >> |
David Tolnay | dfb9143 | 2018-03-31 19:19:44 +0200 | [diff] [blame] | 2017 | fat_arrow: punct!(=>) >> |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 2018 | body: do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2019 | expr: alt!(shim!(expr_nosemi) | syn!(Expr)) >> |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2020 | comma: switch!(value!(arm_expr_requires_comma(&expr)), |
| 2021 | true => alt!( |
| 2022 | input_end!() => { |_| None } |
| 2023 | | |
| 2024 | punct!(,) => { Some } |
| 2025 | ) |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 2026 | | |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2027 | false => option!(punct!(,)) |
| 2028 | ) >> |
| 2029 | (expr, comma) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2030 | ) >> |
| 2031 | (Arm { |
David Tolnay | dfb9143 | 2018-03-31 19:19:44 +0200 | [diff] [blame] | 2032 | fat_arrow_token: fat_arrow, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2033 | attrs: attrs, |
David Tolnay | 18cc4d4 | 2018-03-31 18:47:20 +0200 | [diff] [blame] | 2034 | leading_vert: leading_vert, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2035 | pats: pats, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 2036 | guard: guard.map(|(if_, guard)| (if_, Box::new(guard))), |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 2037 | body: Box::new(body.0), |
| 2038 | comma: body.1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2039 | }) |
| 2040 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2041 | } |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 2042 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2043 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2044 | named2!(expr_closure(allow_struct: AllowStruct) -> Expr, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2045 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 7a008ff | 2018-07-31 22:52:56 -0700 | [diff] [blame] | 2046 | asyncness: option!(keyword!(async)) >> |
| 2047 | movability: option!(cond_reduce!(asyncness.is_none(), keyword!(static))) >> |
David Tolnay | efc96fb | 2017-12-29 02:03:15 -0500 | [diff] [blame] | 2048 | capture: option!(keyword!(move)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2049 | or1: punct!(|) >> |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2050 | inputs: call!(Punctuated::parse_terminated_with, fn_arg) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2051 | or2: punct!(|) >> |
David Tolnay | 89e0567 | 2016-10-02 14:39:42 -0700 | [diff] [blame] | 2052 | ret_and_body: alt!( |
| 2053 | do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2054 | arrow: punct!(->) >> |
David Tolnay | fd6bf5c | 2017-11-12 09:41:14 -0800 | [diff] [blame] | 2055 | ty: syn!(Type) >> |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2056 | body: syn!(Block) >> |
David Tolnay | 76178be | 2018-07-31 23:06:15 -0700 | [diff] [blame] | 2057 | ( |
| 2058 | ReturnType::Type(arrow, Box::new(ty)), |
| 2059 | Expr::Block(ExprBlock { |
| 2060 | attrs: Vec::new(), |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 2061 | label: None, |
David Tolnay | 76178be | 2018-07-31 23:06:15 -0700 | [diff] [blame] | 2062 | block: body, |
| 2063 | }, |
| 2064 | )) |
David Tolnay | 89e0567 | 2016-10-02 14:39:42 -0700 | [diff] [blame] | 2065 | ) |
| 2066 | | |
David Tolnay | f93b90d | 2017-11-11 19:21:26 -0800 | [diff] [blame] | 2067 | map!(ambiguous_expr!(allow_struct), |e| (ReturnType::Default, e)) |
David Tolnay | 89e0567 | 2016-10-02 14:39:42 -0700 | [diff] [blame] | 2068 | ) >> |
Yusuke Sasaki | 4e5d966 | 2018-07-21 02:49:47 +0900 | [diff] [blame] | 2069 | (Expr::Closure(ExprClosure { |
| 2070 | attrs: attrs, |
| 2071 | asyncness: asyncness, |
| 2072 | movability: movability, |
| 2073 | capture: capture, |
| 2074 | or1_token: or1, |
| 2075 | inputs: inputs, |
| 2076 | or2_token: or2, |
| 2077 | output: ret_and_body.0, |
| 2078 | body: Box::new(ret_and_body.1), |
| 2079 | })) |
Yusuke Sasaki | 2dec315 | 2018-07-31 20:41:50 +0900 | [diff] [blame] | 2080 | )); |
| 2081 | |
| 2082 | #[cfg(feature = "full")] |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 2083 | impl Synom for ExprAsync { |
| 2084 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2085 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 2086 | async_token: keyword!(async) >> |
| 2087 | capture: option!(keyword!(move)) >> |
| 2088 | block: syn!(Block) >> |
| 2089 | (ExprAsync { |
| 2090 | attrs: attrs, |
| 2091 | async_token: async_token, |
| 2092 | capture: capture, |
| 2093 | block: block, |
| 2094 | }) |
| 2095 | )); |
| 2096 | } |
Yusuke Sasaki | 851062f | 2018-08-01 06:28:28 +0900 | [diff] [blame] | 2097 | |
| 2098 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2099 | named!(fn_arg -> FnArg, do_parse!( |
| 2100 | pat: syn!(Pat) >> |
David Tolnay | fd6bf5c | 2017-11-12 09:41:14 -0800 | [diff] [blame] | 2101 | ty: option!(tuple!(punct!(:), syn!(Type))) >> |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2102 | ({ |
David Tolnay | 80ed55f | 2017-12-27 22:54:40 -0500 | [diff] [blame] | 2103 | if let Some((colon, ty)) = ty { |
| 2104 | FnArg::Captured(ArgCaptured { |
| 2105 | pat: pat, |
| 2106 | colon_token: colon, |
| 2107 | ty: ty, |
| 2108 | }) |
| 2109 | } else { |
| 2110 | FnArg::Inferred(pat) |
| 2111 | } |
David Tolnay | bb6feae | 2016-10-02 21:25:20 -0700 | [diff] [blame] | 2112 | }) |
Gregory Katz | 3e562cc | 2016-09-28 18:33:02 -0400 | [diff] [blame] | 2113 | )); |
| 2114 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2115 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2116 | impl Synom for ExprWhile { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2117 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2118 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2119 | label: option!(syn!(Label)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2120 | while_: keyword!(while) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2121 | cond: shim!(expr_no_struct) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2122 | block: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2123 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2124 | shim!(Block::parse_within), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2125 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2126 | (ExprWhile { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2127 | attrs: { |
| 2128 | let mut attrs = outer_attrs; |
| 2129 | attrs.extend((block.1).0); |
| 2130 | attrs |
| 2131 | }, |
| 2132 | label: label, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2133 | while_token: while_, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2134 | cond: Box::new(cond), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2135 | body: Block { |
| 2136 | brace_token: block.0, |
| 2137 | stmts: (block.1).1, |
| 2138 | }, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2139 | }) |
| 2140 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2141 | } |
| 2142 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2143 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2144 | impl Synom for ExprWhileLet { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2145 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2146 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2147 | label: option!(syn!(Label)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2148 | while_: keyword!(while) >> |
| 2149 | let_: keyword!(let) >> |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 2150 | pats: call!(Punctuated::parse_separated_nonempty) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2151 | eq: punct!(=) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2152 | value: shim!(expr_no_struct) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2153 | block: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2154 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2155 | shim!(Block::parse_within), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2156 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2157 | (ExprWhileLet { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2158 | attrs: { |
| 2159 | let mut attrs = outer_attrs; |
| 2160 | attrs.extend((block.1).0); |
| 2161 | attrs |
| 2162 | }, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2163 | label: label, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2164 | while_token: while_, |
| 2165 | let_token: let_, |
| 2166 | pats: pats, |
| 2167 | eq_token: eq, |
| 2168 | expr: Box::new(value), |
| 2169 | body: Block { |
| 2170 | brace_token: block.0, |
| 2171 | stmts: (block.1).1, |
| 2172 | }, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2173 | }) |
| 2174 | )); |
| 2175 | } |
| 2176 | |
| 2177 | #[cfg(feature = "full")] |
| 2178 | impl Synom for Label { |
| 2179 | named!(parse -> Self, do_parse!( |
| 2180 | name: syn!(Lifetime) >> |
| 2181 | colon: punct!(:) >> |
| 2182 | (Label { |
| 2183 | name: name, |
| 2184 | colon_token: colon, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2185 | }) |
| 2186 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2187 | } |
| 2188 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2189 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2190 | impl Synom for ExprContinue { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2191 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2192 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2193 | cont: keyword!(continue) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2194 | label: option!(syn!(Lifetime)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2195 | (ExprContinue { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2196 | attrs: attrs, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2197 | continue_token: cont, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2198 | label: label, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2199 | }) |
| 2200 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2201 | } |
Gregory Katz | fd6935d | 2016-09-30 22:51:25 -0400 | [diff] [blame] | 2202 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2203 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2204 | named2!(expr_break(allow_struct: AllowStruct) -> Expr, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2205 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2206 | break_: keyword!(break) >> |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2207 | label: option!(syn!(Lifetime)) >> |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 2208 | // We can't allow blocks after a `break` expression when we wouldn't |
| 2209 | // allow structs, as this expression is ambiguous. |
| 2210 | val: opt_ambiguous_expr!(allow_struct) >> |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2211 | (ExprBreak { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2212 | attrs: attrs, |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 2213 | label: label, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2214 | expr: val.map(Box::new), |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2215 | break_token: break_, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2216 | }.into()) |
Gregory Katz | fd6935d | 2016-09-30 22:51:25 -0400 | [diff] [blame] | 2217 | )); |
| 2218 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2219 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2220 | named2!(expr_ret(allow_struct: AllowStruct) -> Expr, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2221 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2222 | return_: keyword!(return) >> |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 2223 | // NOTE: return is greedy and eats blocks after it even when in a |
| 2224 | // position where structs are not allowed, such as in if statement |
| 2225 | // conditions. For example: |
| 2226 | // |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 2227 | // if return { println!("A") } {} // Prints "A" |
David Tolnay | af2557e | 2016-10-24 11:52:21 -0700 | [diff] [blame] | 2228 | ret_value: option!(ambiguous_expr!(allow_struct)) >> |
David Tolnay | c246cd3 | 2017-12-28 23:14:32 -0500 | [diff] [blame] | 2229 | (ExprReturn { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2230 | attrs: attrs, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2231 | expr: ret_value.map(Box::new), |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2232 | return_token: return_, |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2233 | }.into()) |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 2234 | )); |
| 2235 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2236 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2237 | impl Synom for ExprStruct { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2238 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2239 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2240 | path: syn!(Path) >> |
| 2241 | data: braces!(do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2242 | inner_attrs: many0!(Attribute::old_parse_inner) >> |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2243 | fields: call!(Punctuated::parse_terminated) >> |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2244 | base: option!(cond!(fields.empty_or_trailing(), do_parse!( |
| 2245 | dots: punct!(..) >> |
| 2246 | base: syn!(Expr) >> |
| 2247 | (dots, base) |
| 2248 | ))) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2249 | (inner_attrs, fields, base) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2250 | )) >> |
| 2251 | ({ |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2252 | let (brace, (inner_attrs, fields, base)) = data; |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2253 | let (dots, rest) = match base.and_then(|b| b) { |
| 2254 | Some((dots, base)) => (Some(dots), Some(base)), |
| 2255 | None => (None, None), |
| 2256 | }; |
| 2257 | ExprStruct { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2258 | attrs: { |
| 2259 | let mut attrs = outer_attrs; |
| 2260 | attrs.extend(inner_attrs); |
| 2261 | attrs |
| 2262 | }, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2263 | brace_token: brace, |
| 2264 | path: path, |
| 2265 | fields: fields, |
| 2266 | dot2_token: dots, |
| 2267 | rest: rest.map(Box::new), |
| 2268 | } |
| 2269 | }) |
| 2270 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2271 | } |
| 2272 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2273 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2274 | impl Synom for FieldValue { |
David Tolnay | c42b90a | 2018-01-18 23:11:37 -0800 | [diff] [blame] | 2275 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2276 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | c42b90a | 2018-01-18 23:11:37 -0800 | [diff] [blame] | 2277 | field_value: alt!( |
| 2278 | tuple!(syn!(Member), map!(punct!(:), Some), syn!(Expr)) |
| 2279 | | |
| 2280 | map!(syn!(Ident), |name| ( |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2281 | Member::Named(name.clone()), |
David Tolnay | c42b90a | 2018-01-18 23:11:37 -0800 | [diff] [blame] | 2282 | None, |
| 2283 | Expr::Path(ExprPath { |
| 2284 | attrs: Vec::new(), |
| 2285 | qself: None, |
| 2286 | path: name.into(), |
| 2287 | }), |
| 2288 | )) |
| 2289 | ) >> |
| 2290 | (FieldValue { |
| 2291 | attrs: attrs, |
| 2292 | member: field_value.0, |
| 2293 | colon_token: field_value.1, |
| 2294 | expr: field_value.2, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2295 | }) |
| 2296 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2297 | } |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 2298 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2299 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2300 | impl Synom for ExprRepeat { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2301 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2302 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2303 | data: brackets!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2304 | many0!(Attribute::old_parse_inner), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2305 | syn!(Expr), |
| 2306 | punct!(;), |
David Tolnay | 0235ba6 | 2018-07-21 19:20:50 -0700 | [diff] [blame] | 2307 | syn!(Expr), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2308 | )) >> |
| 2309 | (ExprRepeat { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2310 | attrs: { |
| 2311 | let mut attrs = outer_attrs; |
| 2312 | attrs.extend((data.1).0); |
| 2313 | attrs |
| 2314 | }, |
| 2315 | expr: Box::new((data.1).1), |
| 2316 | len: Box::new((data.1).3), |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2317 | bracket_token: data.0, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2318 | semi_token: (data.1).2, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2319 | }) |
| 2320 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2321 | } |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 2322 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2323 | #[cfg(feature = "full")] |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 2324 | impl Synom for ExprUnsafe { |
| 2325 | named!(parse -> Self, do_parse!( |
David Tolnay | 8b49377 | 2018-08-27 06:30:18 -0700 | [diff] [blame] | 2326 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 2327 | unsafe_: keyword!(unsafe) >> |
David Tolnay | c4be351 | 2018-08-27 06:25:44 -0700 | [diff] [blame] | 2328 | block: braces!(tuple!( |
David Tolnay | 8b49377 | 2018-08-27 06:30:18 -0700 | [diff] [blame] | 2329 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2330 | shim!(Block::parse_within), |
David Tolnay | c4be351 | 2018-08-27 06:25:44 -0700 | [diff] [blame] | 2331 | )) >> |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 2332 | (ExprUnsafe { |
David Tolnay | c4be351 | 2018-08-27 06:25:44 -0700 | [diff] [blame] | 2333 | attrs: { |
| 2334 | let mut attrs = outer_attrs; |
| 2335 | attrs.extend((block.1).0); |
| 2336 | attrs |
| 2337 | }, |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 2338 | unsafe_token: unsafe_, |
David Tolnay | c4be351 | 2018-08-27 06:25:44 -0700 | [diff] [blame] | 2339 | block: Block { |
| 2340 | brace_token: block.0, |
| 2341 | stmts: (block.1).1, |
| 2342 | }, |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 2343 | }) |
| 2344 | )); |
| 2345 | } |
| 2346 | |
| 2347 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2348 | impl Synom for ExprBlock { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2349 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2350 | outer_attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 2351 | label: option!(syn!(Label)) >> |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2352 | block: braces!(tuple!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2353 | many0!(Attribute::old_parse_inner), |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2354 | shim!(Block::parse_within), |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2355 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2356 | (ExprBlock { |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2357 | attrs: { |
| 2358 | let mut attrs = outer_attrs; |
| 2359 | attrs.extend((block.1).0); |
| 2360 | attrs |
| 2361 | }, |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 2362 | label: label, |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2363 | block: Block { |
| 2364 | brace_token: block.0, |
| 2365 | stmts: (block.1).1, |
| 2366 | }, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2367 | }) |
| 2368 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2369 | } |
David Tolnay | 89e0567 | 2016-10-02 14:39:42 -0700 | [diff] [blame] | 2370 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2371 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2372 | named2!(expr_range(allow_struct: AllowStruct) -> Expr, do_parse!( |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2373 | limits: syn!(RangeLimits) >> |
Michael Layzell | b78f3b5 | 2017-06-04 19:03:03 -0400 | [diff] [blame] | 2374 | hi: opt_ambiguous_expr!(allow_struct) >> |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2375 | (ExprRange { |
| 2376 | attrs: Vec::new(), |
| 2377 | from: None, |
| 2378 | to: hi.map(Box::new), |
| 2379 | limits: limits, |
| 2380 | }.into()) |
David Tolnay | 438c905 | 2016-10-07 23:24:48 -0700 | [diff] [blame] | 2381 | )); |
| 2382 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2383 | #[cfg(feature = "full")] |
David Tolnay | c4c631e | 2018-08-27 10:44:37 -0700 | [diff] [blame] | 2384 | impl Parse for RangeLimits { |
| 2385 | fn parse(input: ParseStream) -> Result<Self> { |
| 2386 | let lookahead = input.lookahead1(); |
| 2387 | if lookahead.peek(Token![..=]) { |
| 2388 | input.parse().map(RangeLimits::Closed) |
| 2389 | } else if lookahead.peek(Token![...]) { |
| 2390 | let dot3: Token![...] = input.parse()?; |
| 2391 | Ok(RangeLimits::Closed(Token)) |
| 2392 | } else if lookahead.peek(Token![..]) { |
| 2393 | input.parse().map(RangeLimits::HalfOpen) |
| 2394 | } else { |
| 2395 | Err(lookahead.error()) |
| 2396 | } |
| 2397 | } |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2398 | } |
David Tolnay | 438c905 | 2016-10-07 23:24:48 -0700 | [diff] [blame] | 2399 | |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2400 | impl Synom for ExprPath { |
David Tolnay | eb981bb | 2018-07-21 19:31:38 -0700 | [diff] [blame] | 2401 | #[cfg(not(feature = "full"))] |
| 2402 | named!(parse -> Self, do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2403 | pair: shim!(qpath) >> |
David Tolnay | eb981bb | 2018-07-21 19:31:38 -0700 | [diff] [blame] | 2404 | (ExprPath { |
| 2405 | attrs: Vec::new(), |
| 2406 | qself: pair.0, |
| 2407 | path: pair.1, |
| 2408 | }) |
| 2409 | )); |
| 2410 | |
| 2411 | #[cfg(feature = "full")] |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2412 | named!(parse -> Self, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2413 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2414 | pair: shim!(qpath) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2415 | (ExprPath { |
David Tolnay | 73c9b52 | 2018-07-21 15:58:40 -0700 | [diff] [blame] | 2416 | attrs: attrs, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2417 | qself: pair.0, |
| 2418 | path: pair.1, |
| 2419 | }) |
| 2420 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2421 | } |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 2422 | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2423 | named2!(path -> Path, do_parse!( |
David Tolnay | 9cc2f09 | 2018-08-24 15:51:37 -0400 | [diff] [blame] | 2424 | colon: option!(punct!(::)) >> |
| 2425 | segments: call!(Punctuated::<_, Token![::]>::parse_separated_nonempty_with, path_segment) >> |
| 2426 | cond_reduce!(segments.first().map_or(true, |seg| seg.value().ident != "dyn")) >> |
| 2427 | (Path { |
| 2428 | leading_colon: colon, |
| 2429 | segments: segments, |
| 2430 | }) |
| 2431 | )); |
| 2432 | |
| 2433 | named!(path_segment -> PathSegment, alt!( |
| 2434 | do_parse!( |
| 2435 | ident: syn!(Ident) >> |
| 2436 | colon2: punct!(::) >> |
| 2437 | lt: punct!(<) >> |
| 2438 | args: call!(Punctuated::parse_terminated) >> |
| 2439 | gt: punct!(>) >> |
| 2440 | (PathSegment { |
| 2441 | ident: ident, |
| 2442 | arguments: PathArguments::AngleBracketed(AngleBracketedGenericArguments { |
| 2443 | colon2_token: Some(colon2), |
| 2444 | lt_token: lt, |
| 2445 | args: args, |
| 2446 | gt_token: gt, |
| 2447 | }), |
| 2448 | }) |
| 2449 | ) |
| 2450 | | |
David Tolnay | a7d69fc | 2018-08-26 13:30:24 -0400 | [diff] [blame] | 2451 | old_mod_style_path_segment |
David Tolnay | 9cc2f09 | 2018-08-24 15:51:37 -0400 | [diff] [blame] | 2452 | )); |
| 2453 | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2454 | named2!(qpath -> (Option<QSelf>, Path), alt!( |
| 2455 | map!(shim!(path), |p| (None, p)) |
David Tolnay | 9cc2f09 | 2018-08-24 15:51:37 -0400 | [diff] [blame] | 2456 | | |
| 2457 | do_parse!( |
| 2458 | lt: punct!(<) >> |
| 2459 | this: syn!(Type) >> |
| 2460 | path: option!(tuple!(keyword!(as), syn!(Path))) >> |
| 2461 | gt: punct!(>) >> |
| 2462 | colon2: punct!(::) >> |
| 2463 | rest: call!(Punctuated::parse_separated_nonempty_with, path_segment) >> |
| 2464 | ({ |
| 2465 | let (pos, as_, path) = match path { |
| 2466 | Some((as_, mut path)) => { |
| 2467 | let pos = path.segments.len(); |
| 2468 | path.segments.push_punct(colon2); |
| 2469 | path.segments.extend(rest.into_pairs()); |
| 2470 | (pos, Some(as_), path) |
| 2471 | } |
| 2472 | None => { |
| 2473 | (0, None, Path { |
| 2474 | leading_colon: Some(colon2), |
| 2475 | segments: rest, |
| 2476 | }) |
| 2477 | } |
| 2478 | }; |
| 2479 | (Some(QSelf { |
| 2480 | lt_token: lt, |
| 2481 | ty: Box::new(this), |
| 2482 | position: pos, |
| 2483 | as_token: as_, |
| 2484 | gt_token: gt, |
| 2485 | }), path) |
| 2486 | }) |
| 2487 | ) |
| 2488 | | |
| 2489 | map!(keyword!(self), |s| (None, s.into())) |
| 2490 | )); |
| 2491 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2492 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2493 | impl Synom for Block { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2494 | named!(parse -> Self, do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2495 | stmts: braces!(Block::old_parse_within) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2496 | (Block { |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2497 | brace_token: stmts.0, |
| 2498 | stmts: stmts.1, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2499 | }) |
| 2500 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2501 | } |
David Tolnay | 939766a | 2016-09-23 23:48:12 -0700 | [diff] [blame] | 2502 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2503 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2504 | impl Block { |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2505 | pub fn parse_within(input: ParseStream) -> Result<Vec<Stmt>> { |
| 2506 | input.step_cursor(|cursor| Self::old_parse_within(*cursor)) |
| 2507 | } |
| 2508 | |
| 2509 | named!(old_parse_within -> Vec<Stmt>, do_parse!( |
David Tolnay | 4699a31 | 2017-12-27 14:39:22 -0500 | [diff] [blame] | 2510 | many0!(punct!(;)) >> |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2511 | mut standalone: many0!(do_parse!( |
| 2512 | stmt: syn!(Stmt) >> |
| 2513 | many0!(punct!(;)) >> |
| 2514 | (stmt) |
| 2515 | )) >> |
Alex Crichton | 70bbd59 | 2017-08-27 10:40:03 -0700 | [diff] [blame] | 2516 | last: option!(do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2517 | attrs: many0!(Attribute::old_parse_outer) >> |
Alex Crichton | 70bbd59 | 2017-08-27 10:40:03 -0700 | [diff] [blame] | 2518 | mut e: syn!(Expr) >> |
| 2519 | ({ |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 2520 | e.replace_attrs(attrs); |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2521 | Stmt::Expr(e) |
Alex Crichton | 70bbd59 | 2017-08-27 10:40:03 -0700 | [diff] [blame] | 2522 | }) |
| 2523 | )) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2524 | (match last { |
| 2525 | None => standalone, |
| 2526 | Some(last) => { |
Alex Crichton | 70bbd59 | 2017-08-27 10:40:03 -0700 | [diff] [blame] | 2527 | standalone.push(last); |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2528 | standalone |
| 2529 | } |
| 2530 | }) |
| 2531 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2532 | } |
| 2533 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2534 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2535 | impl Synom for Stmt { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2536 | named!(parse -> Self, alt!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2537 | shim!(stmt_mac) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2538 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2539 | shim!(stmt_local) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2540 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2541 | shim!(stmt_item) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2542 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2543 | shim!(stmt_blockexpr) |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 2544 | | |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2545 | shim!(stmt_expr) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2546 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2547 | } |
David Tolnay | 939766a | 2016-09-23 23:48:12 -0700 | [diff] [blame] | 2548 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2549 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2550 | named2!(stmt_mac -> Stmt, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2551 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | a7d69fc | 2018-08-26 13:30:24 -0400 | [diff] [blame] | 2552 | what: call!(Path::old_parse_mod_style) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2553 | bang: punct!(!) >> |
David Tolnay | eea28d6 | 2016-10-25 20:44:08 -0700 | [diff] [blame] | 2554 | // Only parse braces here; paren and bracket will get parsed as |
| 2555 | // expression statements |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2556 | data: braces!(syn!(TokenStream)) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2557 | semi: option!(punct!(;)) >> |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2558 | (Stmt::Item(Item::Macro(ItemMacro { |
David Tolnay | 57b52bc | 2017-12-28 18:06:38 -0500 | [diff] [blame] | 2559 | attrs: attrs, |
| 2560 | ident: None, |
| 2561 | mac: Macro { |
David Tolnay | 5d55ef7 | 2016-12-21 20:20:04 -0500 | [diff] [blame] | 2562 | path: what, |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2563 | bang_token: bang, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2564 | delimiter: MacroDelimiter::Brace(data.0), |
| 2565 | tts: data.1, |
David Tolnay | eea28d6 | 2016-10-25 20:44:08 -0700 | [diff] [blame] | 2566 | }, |
David Tolnay | 57b52bc | 2017-12-28 18:06:38 -0500 | [diff] [blame] | 2567 | semi_token: semi, |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2568 | }))) |
David Tolnay | 13b3d35 | 2016-10-03 00:31:15 -0700 | [diff] [blame] | 2569 | )); |
| 2570 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2571 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2572 | named2!(stmt_local -> Stmt, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2573 | attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2574 | let_: keyword!(let) >> |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 2575 | pats: call!(Punctuated::parse_separated_nonempty) >> |
David Tolnay | fd6bf5c | 2017-11-12 09:41:14 -0800 | [diff] [blame] | 2576 | ty: option!(tuple!(punct!(:), syn!(Type))) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2577 | init: option!(tuple!(punct!(=), syn!(Expr))) >> |
| 2578 | semi: punct!(;) >> |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2579 | (Stmt::Local(Local { |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 2580 | attrs: attrs, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 2581 | let_token: let_, |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 2582 | pats: pats, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 2583 | ty: ty.map(|(colon, ty)| (colon, Box::new(ty))), |
| 2584 | init: init.map(|(eq, expr)| (eq, Box::new(expr))), |
| 2585 | semi_token: semi, |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2586 | })) |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 2587 | )); |
| 2588 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2589 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2590 | named2!(stmt_item -> Stmt, map!(syn!(Item), |i| Stmt::Item(i))); |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 2591 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2592 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2593 | named2!(stmt_blockexpr -> Stmt, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2594 | mut attrs: many0!(Attribute::old_parse_outer) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2595 | mut e: shim!(expr_nosemi) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2596 | semi: option!(punct!(;)) >> |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 2597 | ({ |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2598 | attrs.extend(e.replace_attrs(Vec::new())); |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 2599 | e.replace_attrs(attrs); |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 2600 | if let Some(semi) = semi { |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2601 | Stmt::Semi(e, semi) |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 2602 | } else { |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2603 | Stmt::Expr(e) |
Michael Layzell | 3541878 | 2017-06-07 09:20:25 -0400 | [diff] [blame] | 2604 | } |
| 2605 | }) |
| 2606 | )); |
David Tolnay | cfe5502 | 2016-10-02 22:02:27 -0700 | [diff] [blame] | 2607 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2608 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2609 | named2!(stmt_expr -> Stmt, do_parse!( |
David Tolnay | f8106f8 | 2018-08-25 21:17:45 -0400 | [diff] [blame] | 2610 | mut attrs: many0!(Attribute::old_parse_outer) >> |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2611 | mut e: syn!(Expr) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2612 | semi: punct!(;) >> |
David Tolnay | 7184b13 | 2016-10-30 10:06:37 -0700 | [diff] [blame] | 2613 | ({ |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 2614 | attrs.extend(e.replace_attrs(Vec::new())); |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 2615 | e.replace_attrs(attrs); |
David Tolnay | 1f0b7b8 | 2018-01-06 16:07:14 -0800 | [diff] [blame] | 2616 | Stmt::Semi(e, semi) |
David Tolnay | cfe5502 | 2016-10-02 22:02:27 -0700 | [diff] [blame] | 2617 | }) |
David Tolnay | 939766a | 2016-09-23 23:48:12 -0700 | [diff] [blame] | 2618 | )); |
David Tolnay | 8b07f37 | 2016-09-30 10:28:40 -0700 | [diff] [blame] | 2619 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2620 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2621 | impl Synom for Pat { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2622 | named!(parse -> Self, alt!( |
| 2623 | syn!(PatWild) => { Pat::Wild } // must be before pat_ident |
| 2624 | | |
| 2625 | syn!(PatBox) => { Pat::Box } // must be before pat_ident |
| 2626 | | |
| 2627 | syn!(PatRange) => { Pat::Range } // must be before pat_lit |
| 2628 | | |
| 2629 | syn!(PatTupleStruct) => { Pat::TupleStruct } // must be before pat_ident |
| 2630 | | |
| 2631 | syn!(PatStruct) => { Pat::Struct } // must be before pat_ident |
| 2632 | | |
David Tolnay | 323279a | 2017-12-29 11:26:32 -0500 | [diff] [blame] | 2633 | syn!(PatMacro) => { Pat::Macro } // must be before pat_ident |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2634 | | |
| 2635 | syn!(PatLit) => { Pat::Lit } // must be before pat_ident |
| 2636 | | |
| 2637 | syn!(PatIdent) => { Pat::Ident } // must be before pat_path |
| 2638 | | |
| 2639 | syn!(PatPath) => { Pat::Path } |
| 2640 | | |
| 2641 | syn!(PatTuple) => { Pat::Tuple } |
| 2642 | | |
| 2643 | syn!(PatRef) => { Pat::Ref } |
| 2644 | | |
| 2645 | syn!(PatSlice) => { Pat::Slice } |
| 2646 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2647 | } |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 2648 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2649 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2650 | impl Synom for PatWild { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2651 | named!(parse -> Self, map!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2652 | punct!(_), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2653 | |u| PatWild { underscore_token: u } |
| 2654 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2655 | } |
David Tolnay | 84aa075 | 2016-10-02 23:01:13 -0700 | [diff] [blame] | 2656 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2657 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2658 | impl Synom for PatBox { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2659 | named!(parse -> Self, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2660 | boxed: keyword!(box) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2661 | pat: syn!(Pat) >> |
| 2662 | (PatBox { |
| 2663 | pat: Box::new(pat), |
| 2664 | box_token: boxed, |
| 2665 | }) |
| 2666 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2667 | } |
| 2668 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2669 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2670 | impl Synom for PatIdent { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2671 | named!(parse -> Self, do_parse!( |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2672 | by_ref: option!(keyword!(ref)) >> |
| 2673 | mutability: option!(keyword!(mut)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2674 | name: alt!( |
| 2675 | syn!(Ident) |
| 2676 | | |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2677 | keyword!(self) => { Into::into } |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2678 | ) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2679 | not!(punct!(<)) >> |
| 2680 | not!(punct!(::)) >> |
| 2681 | subpat: option!(tuple!(punct!(@), syn!(Pat))) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2682 | (PatIdent { |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2683 | by_ref: by_ref, |
David Tolnay | efc96fb | 2017-12-29 02:03:15 -0500 | [diff] [blame] | 2684 | mutability: mutability, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2685 | ident: name, |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 2686 | subpat: subpat.map(|(at, pat)| (at, Box::new(pat))), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2687 | }) |
| 2688 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2689 | } |
| 2690 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2691 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2692 | impl Synom for PatTupleStruct { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2693 | named!(parse -> Self, do_parse!( |
| 2694 | path: syn!(Path) >> |
| 2695 | tuple: syn!(PatTuple) >> |
| 2696 | (PatTupleStruct { |
| 2697 | path: path, |
| 2698 | pat: tuple, |
| 2699 | }) |
| 2700 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2701 | } |
| 2702 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2703 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2704 | impl Synom for PatStruct { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2705 | named!(parse -> Self, do_parse!( |
| 2706 | path: syn!(Path) >> |
| 2707 | data: braces!(do_parse!( |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2708 | fields: call!(Punctuated::parse_terminated) >> |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2709 | base: option!(cond!(fields.empty_or_trailing(), punct!(..))) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2710 | (fields, base) |
| 2711 | )) >> |
| 2712 | (PatStruct { |
| 2713 | path: path, |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2714 | fields: (data.1).0, |
| 2715 | brace_token: data.0, |
| 2716 | dot2_token: (data.1).1.and_then(|m| m), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2717 | }) |
| 2718 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2719 | } |
| 2720 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2721 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2722 | impl Synom for FieldPat { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2723 | named!(parse -> Self, alt!( |
| 2724 | do_parse!( |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 2725 | member: syn!(Member) >> |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2726 | colon: punct!(:) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2727 | pat: syn!(Pat) >> |
| 2728 | (FieldPat { |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 2729 | member: member, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2730 | pat: Box::new(pat), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2731 | attrs: Vec::new(), |
| 2732 | colon_token: Some(colon), |
| 2733 | }) |
| 2734 | ) |
| 2735 | | |
| 2736 | do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2737 | boxed: option!(keyword!(box)) >> |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2738 | by_ref: option!(keyword!(ref)) >> |
| 2739 | mutability: option!(keyword!(mut)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2740 | ident: syn!(Ident) >> |
| 2741 | ({ |
| 2742 | let mut pat: Pat = PatIdent { |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2743 | by_ref: by_ref, |
David Tolnay | efc96fb | 2017-12-29 02:03:15 -0500 | [diff] [blame] | 2744 | mutability: mutability, |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2745 | ident: ident.clone(), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2746 | subpat: None, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2747 | }.into(); |
| 2748 | if let Some(boxed) = boxed { |
| 2749 | pat = PatBox { |
| 2750 | pat: Box::new(pat), |
| 2751 | box_token: boxed, |
| 2752 | }.into(); |
| 2753 | } |
| 2754 | FieldPat { |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 2755 | member: Member::Named(ident), |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2756 | pat: Box::new(pat), |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2757 | attrs: Vec::new(), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2758 | colon_token: None, |
| 2759 | } |
| 2760 | }) |
| 2761 | ) |
| 2762 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2763 | } |
| 2764 | |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 2765 | impl Parse for Member { |
| 2766 | fn parse(input: ParseStream) -> Result<Self> { |
| 2767 | if input.peek(Ident) { |
| 2768 | input.parse().map(Member::Named) |
| 2769 | } else if input.peek(LitInt) { |
| 2770 | input.parse().map(Member::Unnamed) |
| 2771 | } else { |
| 2772 | Err(input.error("expected identifier or integer")) |
| 2773 | } |
| 2774 | } |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 2775 | } |
| 2776 | |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 2777 | impl Parse for Index { |
| 2778 | fn parse(input: ParseStream) -> Result<Self> { |
| 2779 | let lit: LitInt = input.parse()?; |
| 2780 | if let IntSuffix::None = lit.suffix() { |
| 2781 | Ok(Index { |
| 2782 | index: lit.value() as u32, |
| 2783 | span: lit.span(), |
| 2784 | }) |
| 2785 | } else { |
| 2786 | Err(input.error("expected unsuffixed integer")) |
| 2787 | } |
| 2788 | } |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 2789 | } |
David Tolnay | 8d9e81a | 2016-10-03 22:36:32 -0700 | [diff] [blame] | 2790 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2791 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2792 | impl Synom for PatPath { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2793 | named!(parse -> Self, map!( |
| 2794 | syn!(ExprPath), |
David Tolnay | bc7d7d9 | 2017-06-03 20:54:05 -0700 | [diff] [blame] | 2795 | |p| PatPath { qself: p.qself, path: p.path } |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2796 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2797 | } |
David Tolnay | 9636c05 | 2016-10-02 17:11:17 -0700 | [diff] [blame] | 2798 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2799 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2800 | impl Synom for PatTuple { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2801 | named!(parse -> Self, do_parse!( |
| 2802 | data: parens!(do_parse!( |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2803 | front: call!(Punctuated::parse_terminated) >> |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2804 | dotdot: option!(cond_reduce!(front.empty_or_trailing(), |
| 2805 | tuple!(punct!(..), option!(punct!(,))) |
| 2806 | )) >> |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 2807 | back: cond!(match dotdot { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2808 | Some((_, Some(_))) => true, |
| 2809 | _ => false, |
| 2810 | }, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2811 | Punctuated::parse_terminated) >> |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 2812 | (front, dotdot, back) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2813 | )) >> |
| 2814 | ({ |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2815 | let (parens, (front, dotdot, back)) = data; |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2816 | let (dotdot, trailing) = match dotdot { |
| 2817 | Some((a, b)) => (Some(a), Some(b)), |
| 2818 | None => (None, None), |
| 2819 | }; |
| 2820 | PatTuple { |
| 2821 | paren_token: parens, |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 2822 | front: front, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2823 | dot2_token: dotdot, |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 2824 | comma_token: trailing.unwrap_or_default(), |
| 2825 | back: back.unwrap_or_default(), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2826 | } |
| 2827 | }) |
| 2828 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2829 | } |
David Tolnay | fbb7323 | 2016-10-03 01:00:06 -0700 | [diff] [blame] | 2830 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2831 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2832 | impl Synom for PatRef { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2833 | named!(parse -> Self, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2834 | and: punct!(&) >> |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2835 | mutability: option!(keyword!(mut)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2836 | pat: syn!(Pat) >> |
| 2837 | (PatRef { |
| 2838 | pat: Box::new(pat), |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 2839 | mutability: mutability, |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2840 | and_token: and, |
| 2841 | }) |
| 2842 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2843 | } |
David Tolnay | ffdb97f | 2016-10-03 01:28:33 -0700 | [diff] [blame] | 2844 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2845 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2846 | impl Synom for PatLit { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2847 | named!(parse -> Self, do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2848 | lit: shim!(pat_lit_expr) >> |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2849 | (if let Expr::Path(_) = lit { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2850 | return parse_error(); // these need to be parsed by pat_path |
| 2851 | } else { |
| 2852 | PatLit { |
| 2853 | expr: Box::new(lit), |
| 2854 | } |
| 2855 | }) |
| 2856 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2857 | } |
David Tolnay | e131090 | 2016-10-29 23:40:00 -0700 | [diff] [blame] | 2858 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2859 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2860 | impl Synom for PatRange { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2861 | named!(parse -> Self, do_parse!( |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2862 | lo: shim!(pat_lit_expr) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2863 | limits: syn!(RangeLimits) >> |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2864 | hi: shim!(pat_lit_expr) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2865 | (PatRange { |
| 2866 | lo: Box::new(lo), |
| 2867 | hi: Box::new(hi), |
| 2868 | limits: limits, |
| 2869 | }) |
| 2870 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2871 | } |
David Tolnay | e131090 | 2016-10-29 23:40:00 -0700 | [diff] [blame] | 2872 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2873 | #[cfg(feature = "full")] |
David Tolnay | 9389c38 | 2018-08-27 09:13:37 -0700 | [diff] [blame] | 2874 | named2!(pat_lit_expr -> Expr, do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2875 | neg: option!(punct!(-)) >> |
David Tolnay | 2cfddc6 | 2016-10-30 01:03:27 -0700 | [diff] [blame] | 2876 | v: alt!( |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2877 | syn!(ExprLit) => { Expr::Lit } |
David Tolnay | 2cfddc6 | 2016-10-30 01:03:27 -0700 | [diff] [blame] | 2878 | | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2879 | syn!(ExprPath) => { Expr::Path } |
David Tolnay | 2cfddc6 | 2016-10-30 01:03:27 -0700 | [diff] [blame] | 2880 | ) >> |
David Tolnay | c29b989 | 2017-12-27 22:58:14 -0500 | [diff] [blame] | 2881 | (if let Some(neg) = neg { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2882 | Expr::Unary(ExprUnary { |
| 2883 | attrs: Vec::new(), |
David Tolnay | c29b989 | 2017-12-27 22:58:14 -0500 | [diff] [blame] | 2884 | op: UnOp::Neg(neg), |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 2885 | expr: Box::new(v) |
| 2886 | }) |
David Tolnay | 0ad9e9f | 2016-10-29 22:20:02 -0700 | [diff] [blame] | 2887 | } else { |
David Tolnay | 3bc597f | 2017-12-31 02:31:11 -0500 | [diff] [blame] | 2888 | v |
David Tolnay | 0ad9e9f | 2016-10-29 22:20:02 -0700 | [diff] [blame] | 2889 | }) |
| 2890 | )); |
David Tolnay | 8b308c2 | 2016-10-03 01:24:10 -0700 | [diff] [blame] | 2891 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2892 | #[cfg(feature = "full")] |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2893 | impl Synom for PatSlice { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2894 | named!(parse -> Self, map!( |
| 2895 | brackets!(do_parse!( |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2896 | before: call!(Punctuated::parse_terminated) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2897 | middle: option!(do_parse!( |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2898 | dots: punct!(..) >> |
| 2899 | trailing: option!(punct!(,)) >> |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2900 | (dots, trailing) |
| 2901 | )) >> |
| 2902 | after: cond!( |
| 2903 | match middle { |
| 2904 | Some((_, ref trailing)) => trailing.is_some(), |
| 2905 | _ => false, |
| 2906 | }, |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2907 | Punctuated::parse_terminated |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2908 | ) >> |
| 2909 | (before, middle, after) |
| 2910 | )), |
David Tolnay | 8875fca | 2017-12-31 13:52:37 -0500 | [diff] [blame] | 2911 | |(brackets, (before, middle, after))| { |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 2912 | let mut before: Punctuated<Pat, Token![,]> = before; |
| 2913 | let after: Option<Punctuated<Pat, Token![,]>> = after; |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 2914 | let middle: Option<(Token![..], Option<Token![,]>)> = middle; |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2915 | PatSlice { |
David Tolnay | 7ac699c | 2018-08-24 14:00:58 -0400 | [diff] [blame] | 2916 | dot2_token: middle.as_ref().map(|m| Token), |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2917 | comma_token: middle.as_ref().and_then(|m| { |
David Tolnay | 7ac699c | 2018-08-24 14:00:58 -0400 | [diff] [blame] | 2918 | m.1.as_ref().map(|m| Token) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2919 | }), |
| 2920 | bracket_token: brackets, |
| 2921 | middle: middle.and_then(|_| { |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2922 | if before.empty_or_trailing() { |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2923 | None |
David Tolnay | dc03aec | 2017-12-30 01:54:18 -0500 | [diff] [blame] | 2924 | } else { |
David Tolnay | 5608068 | 2018-01-06 14:01:52 -0800 | [diff] [blame] | 2925 | Some(Box::new(before.pop().unwrap().into_value())) |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2926 | } |
| 2927 | }), |
| 2928 | front: before, |
| 2929 | back: after.unwrap_or_default(), |
David Tolnay | e1f13c3 | 2016-10-29 23:34:40 -0700 | [diff] [blame] | 2930 | } |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2931 | } |
Michael Layzell | 92639a5 | 2017-06-01 00:07:44 -0400 | [diff] [blame] | 2932 | )); |
Alex Crichton | 954046c | 2017-05-30 21:49:42 -0700 | [diff] [blame] | 2933 | } |
David Tolnay | 323279a | 2017-12-29 11:26:32 -0500 | [diff] [blame] | 2934 | |
| 2935 | #[cfg(feature = "full")] |
| 2936 | impl Synom for PatMacro { |
| 2937 | named!(parse -> Self, map!(syn!(Macro), |mac| PatMacro { mac: mac })); |
| 2938 | } |
David Tolnay | 1501f7e | 2018-08-27 14:21:03 -0700 | [diff] [blame^] | 2939 | |
| 2940 | #[cfg(feature = "full")] |
| 2941 | impl Member { |
| 2942 | fn is_named(&self) -> bool { |
| 2943 | match *self { |
| 2944 | Member::Named(_) => true, |
| 2945 | Member::Unnamed(_) => false, |
| 2946 | } |
| 2947 | } |
| 2948 | } |
David Tolnay | b9c8e32 | 2016-09-23 20:48:37 -0700 | [diff] [blame] | 2949 | } |
| 2950 | |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 2951 | #[cfg(feature = "printing")] |
| 2952 | mod printing { |
| 2953 | use super::*; |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2954 | #[cfg(feature = "full")] |
David Tolnay | 13b3d35 | 2016-10-03 00:31:15 -0700 | [diff] [blame] | 2955 | use attr::FilterAttrs; |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2956 | use proc_macro2::{Literal, TokenStream}; |
| 2957 | use quote::{ToTokens, TokenStreamExt}; |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 2958 | |
David Tolnay | bcf2602 | 2017-12-25 22:10:52 -0500 | [diff] [blame] | 2959 | // If the given expression is a bare `ExprStruct`, wraps it in parenthesis |
David Tolnay | b6a0e7d | 2018-05-20 22:06:47 -0700 | [diff] [blame] | 2960 | // before appending it to `TokenStream`. |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 2961 | #[cfg(feature = "full")] |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2962 | fn wrap_bare_struct(tokens: &mut TokenStream, e: &Expr) { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2963 | if let Expr::Struct(_) = *e { |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 2964 | token::Paren::default().surround(tokens, |tokens| { |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 2965 | e.to_tokens(tokens); |
| 2966 | }); |
| 2967 | } else { |
| 2968 | e.to_tokens(tokens); |
| 2969 | } |
| 2970 | } |
| 2971 | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2972 | #[cfg(feature = "full")] |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 2973 | fn outer_attrs_to_tokens(attrs: &[Attribute], tokens: &mut TokenStream) { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2974 | tokens.append_all(attrs.outer()); |
| 2975 | } |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2976 | |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 2977 | #[cfg(feature = "full")] |
| 2978 | fn inner_attrs_to_tokens(attrs: &[Attribute], tokens: &mut TokenStream) { |
| 2979 | tokens.append_all(attrs.inner()); |
| 2980 | } |
| 2981 | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 2982 | #[cfg(not(feature = "full"))] |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 2983 | fn outer_attrs_to_tokens(_attrs: &[Attribute], _tokens: &mut TokenStream) {} |
| 2984 | |
| 2985 | #[cfg(not(feature = "full"))] |
| 2986 | fn inner_attrs_to_tokens(_attrs: &[Attribute], _tokens: &mut TokenStream) {} |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 2987 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2988 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 2989 | impl ToTokens for ExprBox { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2990 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 2991 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 2992 | self.box_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 2993 | self.expr.to_tokens(tokens); |
| 2994 | } |
| 2995 | } |
| 2996 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 2997 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 2998 | impl ToTokens for ExprInPlace { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 2999 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3000 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 8701a5c | 2017-12-28 23:31:10 -0500 | [diff] [blame] | 3001 | self.place.to_tokens(tokens); |
| 3002 | self.arrow_token.to_tokens(tokens); |
| 3003 | self.value.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3004 | } |
| 3005 | } |
| 3006 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3007 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3008 | impl ToTokens for ExprArray { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3009 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3010 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3011 | self.bracket_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3012 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 2a86fdd | 2017-12-28 23:34:28 -0500 | [diff] [blame] | 3013 | self.elems.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3014 | }) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3015 | } |
| 3016 | } |
| 3017 | |
| 3018 | impl ToTokens for ExprCall { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3019 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3020 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3021 | self.func.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3022 | self.paren_token.surround(tokens, |tokens| { |
| 3023 | self.args.to_tokens(tokens); |
| 3024 | }) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3025 | } |
| 3026 | } |
| 3027 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3028 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3029 | impl ToTokens for ExprMethodCall { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3030 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3031 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 7641851 | 2017-12-28 23:47:47 -0500 | [diff] [blame] | 3032 | self.receiver.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3033 | self.dot_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3034 | self.method.to_tokens(tokens); |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 3035 | self.turbofish.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3036 | self.paren_token.surround(tokens, |tokens| { |
| 3037 | self.args.to_tokens(tokens); |
| 3038 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3039 | } |
| 3040 | } |
| 3041 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3042 | #[cfg(feature = "full")] |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 3043 | impl ToTokens for MethodTurbofish { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3044 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 3045 | self.colon2_token.to_tokens(tokens); |
| 3046 | self.lt_token.to_tokens(tokens); |
| 3047 | self.args.to_tokens(tokens); |
| 3048 | self.gt_token.to_tokens(tokens); |
| 3049 | } |
| 3050 | } |
| 3051 | |
| 3052 | #[cfg(feature = "full")] |
| 3053 | impl ToTokens for GenericMethodArgument { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3054 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d60cfec | 2017-12-29 00:21:38 -0500 | [diff] [blame] | 3055 | match *self { |
| 3056 | GenericMethodArgument::Type(ref t) => t.to_tokens(tokens), |
| 3057 | GenericMethodArgument::Const(ref c) => c.to_tokens(tokens), |
| 3058 | } |
| 3059 | } |
| 3060 | } |
| 3061 | |
| 3062 | #[cfg(feature = "full")] |
David Tolnay | 0536258 | 2017-12-26 01:33:57 -0500 | [diff] [blame] | 3063 | impl ToTokens for ExprTuple { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3064 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3065 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3066 | self.paren_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3067 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 2a86fdd | 2017-12-28 23:34:28 -0500 | [diff] [blame] | 3068 | self.elems.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3069 | // If we only have one argument, we need a trailing comma to |
David Tolnay | 0536258 | 2017-12-26 01:33:57 -0500 | [diff] [blame] | 3070 | // distinguish ExprTuple from ExprParen. |
David Tolnay | a0834b4 | 2018-01-01 21:30:02 -0800 | [diff] [blame] | 3071 | if self.elems.len() == 1 && !self.elems.trailing_punct() { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 3072 | <Token![,]>::default().to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3073 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3074 | }) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3075 | } |
| 3076 | } |
| 3077 | |
| 3078 | impl ToTokens for ExprBinary { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3079 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3080 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3081 | self.left.to_tokens(tokens); |
| 3082 | self.op.to_tokens(tokens); |
| 3083 | self.right.to_tokens(tokens); |
| 3084 | } |
| 3085 | } |
| 3086 | |
| 3087 | impl ToTokens for ExprUnary { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3088 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3089 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3090 | self.op.to_tokens(tokens); |
| 3091 | self.expr.to_tokens(tokens); |
| 3092 | } |
| 3093 | } |
| 3094 | |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 3095 | impl ToTokens for ExprLit { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3096 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3097 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 3098 | self.lit.to_tokens(tokens); |
| 3099 | } |
| 3100 | } |
| 3101 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3102 | impl ToTokens for ExprCast { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3103 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3104 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3105 | self.expr.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3106 | self.as_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3107 | self.ty.to_tokens(tokens); |
| 3108 | } |
| 3109 | } |
| 3110 | |
David Tolnay | 0cf94f2 | 2017-12-28 23:46:26 -0500 | [diff] [blame] | 3111 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3112 | impl ToTokens for ExprType { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3113 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3114 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3115 | self.expr.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3116 | self.colon_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3117 | self.ty.to_tokens(tokens); |
| 3118 | } |
| 3119 | } |
| 3120 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3121 | #[cfg(feature = "full")] |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3122 | fn maybe_wrap_else(tokens: &mut TokenStream, else_: &Option<(Token![else], Box<Expr>)>) { |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3123 | if let Some((ref else_token, ref else_)) = *else_ { |
| 3124 | else_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3125 | |
| 3126 | // If we are not one of the valid expressions to exist in an else |
| 3127 | // clause, wrap ourselves in a block. |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3128 | match **else_ { |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 3129 | Expr::If(_) | Expr::IfLet(_) | Expr::Block(_) => { |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3130 | else_.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3131 | } |
| 3132 | _ => { |
David Tolnay | 32954ef | 2017-12-26 22:43:16 -0500 | [diff] [blame] | 3133 | token::Brace::default().surround(tokens, |tokens| { |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3134 | else_.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3135 | }); |
| 3136 | } |
| 3137 | } |
| 3138 | } |
| 3139 | } |
| 3140 | |
| 3141 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3142 | impl ToTokens for ExprIf { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3143 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3144 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3145 | self.if_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3146 | wrap_bare_struct(tokens, &self.cond); |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3147 | self.then_branch.to_tokens(tokens); |
| 3148 | maybe_wrap_else(tokens, &self.else_branch); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3149 | } |
| 3150 | } |
| 3151 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3152 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3153 | impl ToTokens for ExprIfLet { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3154 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3155 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3156 | self.if_token.to_tokens(tokens); |
| 3157 | self.let_token.to_tokens(tokens); |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 3158 | self.pats.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3159 | self.eq_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3160 | wrap_bare_struct(tokens, &self.expr); |
David Tolnay | 2ccf32a | 2017-12-29 00:34:26 -0500 | [diff] [blame] | 3161 | self.then_branch.to_tokens(tokens); |
| 3162 | maybe_wrap_else(tokens, &self.else_branch); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3163 | } |
| 3164 | } |
| 3165 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3166 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3167 | impl ToTokens for ExprWhile { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3168 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3169 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3170 | self.label.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3171 | self.while_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3172 | wrap_bare_struct(tokens, &self.cond); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3173 | self.body.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3174 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3175 | tokens.append_all(&self.body.stmts); |
| 3176 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3177 | } |
| 3178 | } |
| 3179 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3180 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3181 | impl ToTokens for ExprWhileLet { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3182 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3183 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3184 | self.label.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3185 | self.while_token.to_tokens(tokens); |
| 3186 | self.let_token.to_tokens(tokens); |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 3187 | self.pats.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3188 | self.eq_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3189 | wrap_bare_struct(tokens, &self.expr); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3190 | self.body.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3191 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3192 | tokens.append_all(&self.body.stmts); |
| 3193 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3194 | } |
| 3195 | } |
| 3196 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3197 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3198 | impl ToTokens for ExprForLoop { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3199 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3200 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3201 | self.label.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3202 | self.for_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3203 | self.pat.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3204 | self.in_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3205 | wrap_bare_struct(tokens, &self.expr); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3206 | self.body.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3207 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3208 | tokens.append_all(&self.body.stmts); |
| 3209 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3210 | } |
| 3211 | } |
| 3212 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3213 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3214 | impl ToTokens for ExprLoop { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3215 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3216 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3217 | self.label.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3218 | self.loop_token.to_tokens(tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3219 | self.body.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3220 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3221 | tokens.append_all(&self.body.stmts); |
| 3222 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3223 | } |
| 3224 | } |
| 3225 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3226 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3227 | impl ToTokens for ExprMatch { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3228 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3229 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3230 | self.match_token.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3231 | wrap_bare_struct(tokens, &self.expr); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3232 | self.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3233 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5138205 | 2017-12-27 13:46:21 -0500 | [diff] [blame] | 3234 | for (i, arm) in self.arms.iter().enumerate() { |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3235 | arm.to_tokens(tokens); |
| 3236 | // Ensure that we have a comma after a non-block arm, except |
| 3237 | // for the last one. |
| 3238 | let is_last = i == self.arms.len() - 1; |
Alex Crichton | 03b3027 | 2017-08-28 09:35:24 -0700 | [diff] [blame] | 3239 | if !is_last && arm_expr_requires_comma(&arm.body) && arm.comma.is_none() { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 3240 | <Token![,]>::default().to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3241 | } |
| 3242 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3243 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3244 | } |
| 3245 | } |
| 3246 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3247 | #[cfg(feature = "full")] |
David Tolnay | 02a9c6f | 2018-08-24 18:58:45 -0400 | [diff] [blame] | 3248 | impl ToTokens for ExprAsync { |
| 3249 | fn to_tokens(&self, tokens: &mut TokenStream) { |
| 3250 | outer_attrs_to_tokens(&self.attrs, tokens); |
| 3251 | self.async_token.to_tokens(tokens); |
| 3252 | self.capture.to_tokens(tokens); |
| 3253 | self.block.to_tokens(tokens); |
| 3254 | } |
| 3255 | } |
| 3256 | |
| 3257 | #[cfg(feature = "full")] |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 3258 | impl ToTokens for ExprTryBlock { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3259 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3260 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | fb2dd4b | 2018-08-24 16:45:34 -0400 | [diff] [blame] | 3261 | self.try_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3262 | self.block.to_tokens(tokens); |
| 3263 | } |
| 3264 | } |
| 3265 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3266 | #[cfg(feature = "full")] |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 3267 | impl ToTokens for ExprYield { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3268 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3269 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | fe11046 | 2017-06-01 12:49:27 -0700 | [diff] [blame] | 3270 | self.yield_token.to_tokens(tokens); |
| 3271 | self.expr.to_tokens(tokens); |
| 3272 | } |
| 3273 | } |
| 3274 | |
| 3275 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3276 | impl ToTokens for ExprClosure { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3277 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3278 | outer_attrs_to_tokens(&self.attrs, tokens); |
Yusuke Sasaki | 4e5d966 | 2018-07-21 02:49:47 +0900 | [diff] [blame] | 3279 | self.asyncness.to_tokens(tokens); |
David Tolnay | 13d4c0e | 2018-03-31 20:53:59 +0200 | [diff] [blame] | 3280 | self.movability.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3281 | self.capture.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3282 | self.or1_token.to_tokens(tokens); |
David Tolnay | 5608068 | 2018-01-06 14:01:52 -0800 | [diff] [blame] | 3283 | for input in self.inputs.pairs() { |
| 3284 | match **input.value() { |
David Tolnay | 5138205 | 2017-12-27 13:46:21 -0500 | [diff] [blame] | 3285 | FnArg::Captured(ArgCaptured { |
| 3286 | ref pat, |
| 3287 | ty: Type::Infer(_), |
| 3288 | .. |
| 3289 | }) => { |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3290 | pat.to_tokens(tokens); |
David Tolnay | 9636c05 | 2016-10-02 17:11:17 -0700 | [diff] [blame] | 3291 | } |
David Tolnay | 5608068 | 2018-01-06 14:01:52 -0800 | [diff] [blame] | 3292 | _ => input.value().to_tokens(tokens), |
David Tolnay | 3c2467c | 2016-10-02 17:55:08 -0700 | [diff] [blame] | 3293 | } |
David Tolnay | f2cfd72 | 2017-12-31 18:02:51 -0500 | [diff] [blame] | 3294 | input.punct().to_tokens(tokens); |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 3295 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3296 | self.or2_token.to_tokens(tokens); |
David Tolnay | 7f67574 | 2017-12-27 22:43:21 -0500 | [diff] [blame] | 3297 | self.output.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3298 | self.body.to_tokens(tokens); |
| 3299 | } |
| 3300 | } |
| 3301 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3302 | #[cfg(feature = "full")] |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 3303 | impl ToTokens for ExprUnsafe { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3304 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3305 | outer_attrs_to_tokens(&self.attrs, tokens); |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 3306 | self.unsafe_token.to_tokens(tokens); |
David Tolnay | c4be351 | 2018-08-27 06:25:44 -0700 | [diff] [blame] | 3307 | self.block.brace_token.surround(tokens, |tokens| { |
| 3308 | inner_attrs_to_tokens(&self.attrs, tokens); |
| 3309 | tokens.append_all(&self.block.stmts); |
| 3310 | }); |
Nika Layzell | 640832a | 2017-12-04 13:37:09 -0500 | [diff] [blame] | 3311 | } |
| 3312 | } |
| 3313 | |
| 3314 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3315 | impl ToTokens for ExprBlock { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3316 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3317 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 1d8e996 | 2018-08-24 19:04:20 -0400 | [diff] [blame] | 3318 | self.label.to_tokens(tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3319 | self.block.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3320 | inner_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 5d314dc | 2018-07-21 16:40:01 -0700 | [diff] [blame] | 3321 | tokens.append_all(&self.block.stmts); |
| 3322 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3323 | } |
| 3324 | } |
| 3325 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3326 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3327 | impl ToTokens for ExprAssign { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3328 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3329 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3330 | self.left.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3331 | self.eq_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3332 | self.right.to_tokens(tokens); |
| 3333 | } |
| 3334 | } |
| 3335 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3336 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3337 | impl ToTokens for ExprAssignOp { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3338 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3339 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3340 | self.left.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3341 | self.op.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3342 | self.right.to_tokens(tokens); |
| 3343 | } |
| 3344 | } |
| 3345 | |
| 3346 | impl ToTokens for ExprField { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3347 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3348 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3349 | self.base.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3350 | self.dot_token.to_tokens(tokens); |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3351 | self.member.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3352 | } |
| 3353 | } |
| 3354 | |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3355 | impl ToTokens for Member { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3356 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3357 | match *self { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3358 | Member::Named(ref ident) => ident.to_tokens(tokens), |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3359 | Member::Unnamed(ref index) => index.to_tokens(tokens), |
| 3360 | } |
| 3361 | } |
| 3362 | } |
| 3363 | |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3364 | impl ToTokens for Index { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3365 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | 9a4dca2 | 2018-03-28 06:32:19 -0700 | [diff] [blame] | 3366 | let mut lit = Literal::i64_unsuffixed(i64::from(self.index)); |
| 3367 | lit.set_span(self.span); |
| 3368 | tokens.append(lit); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3369 | } |
| 3370 | } |
| 3371 | |
| 3372 | impl ToTokens for ExprIndex { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3373 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3374 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3375 | self.expr.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3376 | self.bracket_token.surround(tokens, |tokens| { |
| 3377 | self.index.to_tokens(tokens); |
| 3378 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3379 | } |
| 3380 | } |
| 3381 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3382 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3383 | impl ToTokens for ExprRange { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3384 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3385 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3386 | self.from.to_tokens(tokens); |
David Tolnay | 475288a | 2017-12-19 22:59:44 -0800 | [diff] [blame] | 3387 | match self.limits { |
| 3388 | RangeLimits::HalfOpen(ref t) => t.to_tokens(tokens), |
| 3389 | RangeLimits::Closed(ref t) => t.to_tokens(tokens), |
| 3390 | } |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3391 | self.to.to_tokens(tokens); |
| 3392 | } |
| 3393 | } |
| 3394 | |
| 3395 | impl ToTokens for ExprPath { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3396 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3397 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3398 | ::PathTokens(&self.qself, &self.path).to_tokens(tokens) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3399 | } |
| 3400 | } |
| 3401 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3402 | #[cfg(feature = "full")] |
David Tolnay | 00674ba | 2018-03-31 18:14:11 +0200 | [diff] [blame] | 3403 | impl ToTokens for ExprReference { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3404 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3405 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3406 | self.and_token.to_tokens(tokens); |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 3407 | self.mutability.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3408 | self.expr.to_tokens(tokens); |
| 3409 | } |
| 3410 | } |
| 3411 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3412 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3413 | impl ToTokens for ExprBreak { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3414 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3415 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3416 | self.break_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3417 | self.label.to_tokens(tokens); |
| 3418 | self.expr.to_tokens(tokens); |
| 3419 | } |
| 3420 | } |
| 3421 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3422 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3423 | impl ToTokens for ExprContinue { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3424 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3425 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3426 | self.continue_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3427 | self.label.to_tokens(tokens); |
| 3428 | } |
| 3429 | } |
| 3430 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3431 | #[cfg(feature = "full")] |
David Tolnay | c246cd3 | 2017-12-28 23:14:32 -0500 | [diff] [blame] | 3432 | impl ToTokens for ExprReturn { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3433 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3434 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3435 | self.return_token.to_tokens(tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3436 | self.expr.to_tokens(tokens); |
| 3437 | } |
| 3438 | } |
| 3439 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3440 | #[cfg(feature = "full")] |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 3441 | impl ToTokens for ExprMacro { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3442 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3443 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 8c91b88 | 2017-12-28 23:04:32 -0500 | [diff] [blame] | 3444 | self.mac.to_tokens(tokens); |
| 3445 | } |
| 3446 | } |
| 3447 | |
| 3448 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3449 | impl ToTokens for ExprStruct { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3450 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3451 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3452 | self.path.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3453 | self.brace_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3454 | inner_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3455 | self.fields.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3456 | if self.rest.is_some() { |
Alex Crichton | 259ee53 | 2017-07-14 06:51:02 -0700 | [diff] [blame] | 3457 | TokensOrDefault(&self.dot2_token).to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3458 | self.rest.to_tokens(tokens); |
| 3459 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3460 | }) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3461 | } |
| 3462 | } |
| 3463 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3464 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3465 | impl ToTokens for ExprRepeat { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3466 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3467 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3468 | self.bracket_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3469 | inner_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3470 | self.expr.to_tokens(tokens); |
| 3471 | self.semi_token.to_tokens(tokens); |
David Tolnay | 84d8044 | 2018-01-07 01:03:20 -0800 | [diff] [blame] | 3472 | self.len.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3473 | }) |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3474 | } |
| 3475 | } |
| 3476 | |
David Tolnay | e98775f | 2017-12-28 23:17:00 -0500 | [diff] [blame] | 3477 | #[cfg(feature = "full")] |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 3478 | impl ToTokens for ExprGroup { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3479 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3480 | outer_attrs_to_tokens(&self.attrs, tokens); |
Michael Layzell | 93c3628 | 2017-06-04 20:43:14 -0400 | [diff] [blame] | 3481 | self.group_token.surround(tokens, |tokens| { |
| 3482 | self.expr.to_tokens(tokens); |
| 3483 | }); |
| 3484 | } |
| 3485 | } |
| 3486 | |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3487 | impl ToTokens for ExprParen { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3488 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3489 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3490 | self.paren_token.surround(tokens, |tokens| { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3491 | inner_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3492 | self.expr.to_tokens(tokens); |
| 3493 | }); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3494 | } |
| 3495 | } |
| 3496 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3497 | #[cfg(feature = "full")] |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3498 | impl ToTokens for ExprTry { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3499 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3500 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | 62a0a59 | 2017-05-22 13:58:53 -0700 | [diff] [blame] | 3501 | self.expr.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3502 | self.question_token.to_tokens(tokens); |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 3503 | } |
| 3504 | } |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 3505 | |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 3506 | impl ToTokens for ExprVerbatim { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3507 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 3508 | self.tts.to_tokens(tokens); |
| 3509 | } |
| 3510 | } |
| 3511 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3512 | #[cfg(feature = "full")] |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3513 | impl ToTokens for Label { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3514 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | bcd498f | 2017-12-29 12:02:33 -0500 | [diff] [blame] | 3515 | self.name.to_tokens(tokens); |
| 3516 | self.colon_token.to_tokens(tokens); |
| 3517 | } |
| 3518 | } |
| 3519 | |
| 3520 | #[cfg(feature = "full")] |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 3521 | impl ToTokens for FieldValue { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3522 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3523 | outer_attrs_to_tokens(&self.attrs, tokens); |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3524 | self.member.to_tokens(tokens); |
David Tolnay | 5d7098a | 2017-12-29 01:35:24 -0500 | [diff] [blame] | 3525 | if let Some(ref colon_token) = self.colon_token { |
| 3526 | colon_token.to_tokens(tokens); |
David Tolnay | 276690f | 2016-10-30 12:06:59 -0700 | [diff] [blame] | 3527 | self.expr.to_tokens(tokens); |
| 3528 | } |
David Tolnay | 055a704 | 2016-10-02 19:23:54 -0700 | [diff] [blame] | 3529 | } |
| 3530 | } |
| 3531 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3532 | #[cfg(feature = "full")] |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 3533 | impl ToTokens for Arm { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3534 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3535 | tokens.append_all(&self.attrs); |
David Tolnay | 18cc4d4 | 2018-03-31 18:47:20 +0200 | [diff] [blame] | 3536 | self.leading_vert.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3537 | self.pats.to_tokens(tokens); |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 3538 | if let Some((ref if_token, ref guard)) = self.guard { |
| 3539 | if_token.to_tokens(tokens); |
| 3540 | guard.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3541 | } |
David Tolnay | dfb9143 | 2018-03-31 19:19:44 +0200 | [diff] [blame] | 3542 | self.fat_arrow_token.to_tokens(tokens); |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 3543 | self.body.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3544 | self.comma.to_tokens(tokens); |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 3545 | } |
| 3546 | } |
| 3547 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3548 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3549 | impl ToTokens for PatWild { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3550 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3551 | self.underscore_token.to_tokens(tokens); |
| 3552 | } |
| 3553 | } |
| 3554 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3555 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3556 | impl ToTokens for PatIdent { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3557 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 3558 | self.by_ref.to_tokens(tokens); |
David Tolnay | efc96fb | 2017-12-29 02:03:15 -0500 | [diff] [blame] | 3559 | self.mutability.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3560 | self.ident.to_tokens(tokens); |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 3561 | if let Some((ref at_token, ref subpat)) = self.subpat { |
| 3562 | at_token.to_tokens(tokens); |
| 3563 | subpat.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3564 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3565 | } |
| 3566 | } |
| 3567 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3568 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3569 | impl ToTokens for PatStruct { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3570 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3571 | self.path.to_tokens(tokens); |
| 3572 | self.brace_token.surround(tokens, |tokens| { |
| 3573 | self.fields.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3574 | // NOTE: We need a comma before the dot2 token if it is present. |
| 3575 | if !self.fields.empty_or_trailing() && self.dot2_token.is_some() { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 3576 | <Token![,]>::default().to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3577 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3578 | self.dot2_token.to_tokens(tokens); |
| 3579 | }); |
| 3580 | } |
| 3581 | } |
| 3582 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3583 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3584 | impl ToTokens for PatTupleStruct { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3585 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3586 | self.path.to_tokens(tokens); |
| 3587 | self.pat.to_tokens(tokens); |
| 3588 | } |
| 3589 | } |
| 3590 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3591 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3592 | impl ToTokens for PatPath { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3593 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3594 | ::PathTokens(&self.qself, &self.path).to_tokens(tokens); |
| 3595 | } |
| 3596 | } |
| 3597 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3598 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3599 | impl ToTokens for PatTuple { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3600 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3601 | self.paren_token.surround(tokens, |tokens| { |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 3602 | self.front.to_tokens(tokens); |
| 3603 | if let Some(ref dot2_token) = self.dot2_token { |
| 3604 | if !self.front.empty_or_trailing() { |
| 3605 | // Ensure there is a comma before the .. token. |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 3606 | <Token![,]>::default().to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3607 | } |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 3608 | dot2_token.to_tokens(tokens); |
| 3609 | self.comma_token.to_tokens(tokens); |
| 3610 | if self.comma_token.is_none() && !self.back.is_empty() { |
| 3611 | // Ensure there is a comma after the .. token. |
| 3612 | <Token![,]>::default().to_tokens(tokens); |
| 3613 | } |
David Tolnay | 8d9e81a | 2016-10-03 22:36:32 -0700 | [diff] [blame] | 3614 | } |
David Tolnay | 4187192 | 2017-12-29 01:53:45 -0500 | [diff] [blame] | 3615 | self.back.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3616 | }); |
| 3617 | } |
| 3618 | } |
| 3619 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3620 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3621 | impl ToTokens for PatBox { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3622 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3623 | self.box_token.to_tokens(tokens); |
| 3624 | self.pat.to_tokens(tokens); |
| 3625 | } |
| 3626 | } |
| 3627 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3628 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3629 | impl ToTokens for PatRef { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3630 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3631 | self.and_token.to_tokens(tokens); |
David Tolnay | 24237fb | 2017-12-29 02:15:26 -0500 | [diff] [blame] | 3632 | self.mutability.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3633 | self.pat.to_tokens(tokens); |
| 3634 | } |
| 3635 | } |
| 3636 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3637 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3638 | impl ToTokens for PatLit { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3639 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3640 | self.expr.to_tokens(tokens); |
| 3641 | } |
| 3642 | } |
| 3643 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3644 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3645 | impl ToTokens for PatRange { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3646 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3647 | self.lo.to_tokens(tokens); |
David Tolnay | 475288a | 2017-12-19 22:59:44 -0800 | [diff] [blame] | 3648 | match self.limits { |
| 3649 | RangeLimits::HalfOpen(ref t) => t.to_tokens(tokens), |
David Tolnay | 7ac699c | 2018-08-24 14:00:58 -0400 | [diff] [blame] | 3650 | RangeLimits::Closed(ref t) => Token.to_tokens(tokens), |
David Tolnay | 475288a | 2017-12-19 22:59:44 -0800 | [diff] [blame] | 3651 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3652 | self.hi.to_tokens(tokens); |
| 3653 | } |
| 3654 | } |
| 3655 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3656 | #[cfg(feature = "full")] |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3657 | impl ToTokens for PatSlice { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3658 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3659 | // XXX: This is a mess, and it will be so easy to screw it up. How |
| 3660 | // do we make this correct itself better? |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3661 | self.bracket_token.surround(tokens, |tokens| { |
| 3662 | self.front.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3663 | |
| 3664 | // If we need a comma before the middle or standalone .. token, |
| 3665 | // then make sure it's present. |
David Tolnay | 5138205 | 2017-12-27 13:46:21 -0500 | [diff] [blame] | 3666 | if !self.front.empty_or_trailing() |
| 3667 | && (self.middle.is_some() || self.dot2_token.is_some()) |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3668 | { |
David Tolnay | f8db7ba | 2017-11-11 22:52:16 -0800 | [diff] [blame] | 3669 | <Token![,]>::default().to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3670 | } |
| 3671 | |
| 3672 | // If we have an identifier, we always need a .. token. |
| 3673 | if self.middle.is_some() { |
| 3674 | self.middle.to_tokens(tokens); |
Alex Crichton | 259ee53 | 2017-07-14 06:51:02 -0700 | [diff] [blame] | 3675 | TokensOrDefault(&self.dot2_token).to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3676 | } else if self.dot2_token.is_some() { |
| 3677 | self.dot2_token.to_tokens(tokens); |
| 3678 | } |
| 3679 | |
| 3680 | // Make sure we have a comma before the back half. |
| 3681 | if !self.back.is_empty() { |
Alex Crichton | 259ee53 | 2017-07-14 06:51:02 -0700 | [diff] [blame] | 3682 | TokensOrDefault(&self.comma_token).to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3683 | self.back.to_tokens(tokens); |
| 3684 | } else { |
| 3685 | self.comma_token.to_tokens(tokens); |
| 3686 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3687 | }) |
David Tolnay | b4ad3b5 | 2016-10-01 21:58:13 -0700 | [diff] [blame] | 3688 | } |
| 3689 | } |
| 3690 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3691 | #[cfg(feature = "full")] |
David Tolnay | 323279a | 2017-12-29 11:26:32 -0500 | [diff] [blame] | 3692 | impl ToTokens for PatMacro { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3693 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 323279a | 2017-12-29 11:26:32 -0500 | [diff] [blame] | 3694 | self.mac.to_tokens(tokens); |
| 3695 | } |
| 3696 | } |
| 3697 | |
| 3698 | #[cfg(feature = "full")] |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 3699 | impl ToTokens for PatVerbatim { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3700 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 2ae520a | 2017-12-29 11:19:50 -0500 | [diff] [blame] | 3701 | self.tts.to_tokens(tokens); |
| 3702 | } |
| 3703 | } |
| 3704 | |
| 3705 | #[cfg(feature = "full")] |
David Tolnay | 8d9e81a | 2016-10-03 22:36:32 -0700 | [diff] [blame] | 3706 | impl ToTokens for FieldPat { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3707 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 5d7098a | 2017-12-29 01:35:24 -0500 | [diff] [blame] | 3708 | if let Some(ref colon_token) = self.colon_token { |
David Tolnay | 85b69a4 | 2017-12-27 20:43:10 -0500 | [diff] [blame] | 3709 | self.member.to_tokens(tokens); |
David Tolnay | 5d7098a | 2017-12-29 01:35:24 -0500 | [diff] [blame] | 3710 | colon_token.to_tokens(tokens); |
David Tolnay | 8d9e81a | 2016-10-03 22:36:32 -0700 | [diff] [blame] | 3711 | } |
| 3712 | self.pat.to_tokens(tokens); |
| 3713 | } |
| 3714 | } |
| 3715 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3716 | #[cfg(feature = "full")] |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3717 | impl ToTokens for Block { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3718 | fn to_tokens(&self, tokens: &mut TokenStream) { |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3719 | self.brace_token.surround(tokens, |tokens| { |
| 3720 | tokens.append_all(&self.stmts); |
| 3721 | }); |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3722 | } |
| 3723 | } |
| 3724 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3725 | #[cfg(feature = "full")] |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3726 | impl ToTokens for Stmt { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3727 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3728 | match *self { |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 3729 | Stmt::Local(ref local) => local.to_tokens(tokens), |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3730 | Stmt::Item(ref item) => item.to_tokens(tokens), |
| 3731 | Stmt::Expr(ref expr) => expr.to_tokens(tokens), |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3732 | Stmt::Semi(ref expr, ref semi) => { |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3733 | expr.to_tokens(tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3734 | semi.to_tokens(tokens); |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3735 | } |
David Tolnay | 4260229 | 2016-10-01 22:25:45 -0700 | [diff] [blame] | 3736 | } |
| 3737 | } |
| 3738 | } |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 3739 | |
Michael Layzell | 734adb4 | 2017-06-07 16:58:31 -0400 | [diff] [blame] | 3740 | #[cfg(feature = "full")] |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 3741 | impl ToTokens for Local { |
Alex Crichton | a74a1c8 | 2018-05-16 10:20:44 -0700 | [diff] [blame] | 3742 | fn to_tokens(&self, tokens: &mut TokenStream) { |
David Tolnay | d997aef | 2018-07-21 18:42:31 -0700 | [diff] [blame] | 3743 | outer_attrs_to_tokens(&self.attrs, tokens); |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3744 | self.let_token.to_tokens(tokens); |
David Tolnay | 5b5b7d2 | 2018-03-31 21:05:00 +0200 | [diff] [blame] | 3745 | self.pats.to_tokens(tokens); |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 3746 | if let Some((ref colon_token, ref ty)) = self.ty { |
| 3747 | colon_token.to_tokens(tokens); |
| 3748 | ty.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3749 | } |
David Tolnay | 8b4d302 | 2017-12-29 12:11:10 -0500 | [diff] [blame] | 3750 | if let Some((ref eq_token, ref init)) = self.init { |
| 3751 | eq_token.to_tokens(tokens); |
| 3752 | init.to_tokens(tokens); |
Michael Layzell | 3936ceb | 2017-07-08 00:28:36 -0400 | [diff] [blame] | 3753 | } |
Alex Crichton | ccbb45d | 2017-05-23 10:58:24 -0700 | [diff] [blame] | 3754 | self.semi_token.to_tokens(tokens); |
David Tolnay | 191e058 | 2016-10-02 18:31:09 -0700 | [diff] [blame] | 3755 | } |
| 3756 | } |
David Tolnay | f4bbbd9 | 2016-09-23 14:41:55 -0700 | [diff] [blame] | 3757 | } |