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Commit | Line | Data |
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29967ef6 XL |
1 | #[macro_use] |
2 | mod macros; | |
3 | ||
4 | use proc_macro2::{Delimiter, Group, TokenStream, TokenTree}; | |
e74abb32 | 5 | use quote::quote; |
29967ef6 | 6 | use std::iter::FromIterator; |
f035d41b | 7 | use syn::{Item, Pat, Stmt}; |
e74abb32 XL |
8 | |
9 | #[test] | |
10 | fn test_pat_ident() { | |
11 | match syn::parse2(quote!(self)).unwrap() { | |
12 | Pat::Ident(_) => (), | |
13 | value => panic!("expected PatIdent, got {:?}", value), | |
14 | } | |
15 | } | |
16 | ||
17 | #[test] | |
18 | fn test_pat_path() { | |
19 | match syn::parse2(quote!(self::CONST)).unwrap() { | |
20 | Pat::Path(_) => (), | |
21 | value => panic!("expected PatPath, got {:?}", value), | |
22 | } | |
23 | } | |
f035d41b XL |
24 | |
25 | #[test] | |
26 | fn test_leading_vert() { | |
27 | // https://github.com/rust-lang/rust/blob/1.43.0/src/test/ui/or-patterns/remove-leading-vert.rs | |
28 | ||
29 | syn::parse_str::<Item>("fn f() {}").unwrap(); | |
30 | syn::parse_str::<Item>("fn fun1(| A: E) {}").unwrap_err(); | |
31 | syn::parse_str::<Item>("fn fun2(|| A: E) {}").unwrap_err(); | |
32 | ||
33 | syn::parse_str::<Stmt>("let | () = ();").unwrap(); | |
34 | syn::parse_str::<Stmt>("let (| A): E;").unwrap_err(); | |
35 | syn::parse_str::<Stmt>("let (|| A): (E);").unwrap_err(); | |
36 | syn::parse_str::<Stmt>("let (| A,): (E,);").unwrap_err(); | |
37 | syn::parse_str::<Stmt>("let [| A]: [E; 1];").unwrap_err(); | |
38 | syn::parse_str::<Stmt>("let [|| A]: [E; 1];").unwrap_err(); | |
39 | syn::parse_str::<Stmt>("let TS(| A): TS;").unwrap_err(); | |
40 | syn::parse_str::<Stmt>("let TS(|| A): TS;").unwrap_err(); | |
41 | syn::parse_str::<Stmt>("let NS { f: | A }: NS;").unwrap_err(); | |
42 | syn::parse_str::<Stmt>("let NS { f: || A }: NS;").unwrap_err(); | |
43 | } | |
29967ef6 XL |
44 | |
45 | #[test] | |
46 | fn test_group() { | |
47 | let group = Group::new(Delimiter::None, quote!(Some(_))); | |
48 | let tokens = TokenStream::from_iter(vec![TokenTree::Group(group)]); | |
49 | ||
50 | snapshot!(tokens as Pat, @r###" | |
51 | Pat::TupleStruct { | |
52 | path: Path { | |
53 | segments: [ | |
54 | PathSegment { | |
55 | ident: "Some", | |
56 | arguments: None, | |
57 | }, | |
58 | ], | |
59 | }, | |
60 | pat: PatTuple { | |
61 | elems: [ | |
62 | Pat::Wild, | |
63 | ], | |
64 | }, | |
65 | } | |
66 | "###); | |
67 | } |