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Parse arbitrary self types as PatIdent

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This commit is contained in:
Michael Bradshaw 2018-10-19 22:26:56 -07:00
parent d8666299ca
commit 7531e1579d
2 changed files with 33 additions and 2 deletions
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8
src/expr.rs
View File

@ -2531,16 +2531,20 @@ pub mod parsing {
ahead.is_empty() || ahead.peek(Token![,])
}
})
|| input.peek(Token![self]) && input.peek2(Token![::])
|| input.peek(Token![::])
|| input.peek(Token![<])
|| input.peek(Token![self])
|| input.peek(Token![Self])
|| input.peek(Token![super])
|| input.peek(Token![extern])
|| input.peek(Token![crate])
{
pat_path_or_macro_or_struct_or_range(input)
} else if input.peek(Token![ref]) || input.peek(Token![mut]) || input.peek(Ident) {
} else if input.peek(Token![ref])
|| input.peek(Token![mut])
|| input.peek(Token![self])
|| input.peek(Ident)
{
input.call(pat_ident).map(Pat::Ident)
} else if lookahead.peek(token::Paren) {
input.call(pat_tuple).map(Pat::Tuple)

27
tests/test_pat.rs Normal file
View File

@ -0,0 +1,27 @@
// Copyright 2018 Syn Developers
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[macro_use]
extern crate quote;
extern crate syn;
#[test]
fn test_pat_ident() {
match syn::parse2(quote!(self)).unwrap() {
syn::Pat::Ident(_) => (),
value => panic!("expected PatIdent, got {:?}", value),
}
}
#[test]
fn test_pat_path() {
match syn::parse2(quote!(self::CONST)).unwrap() {
syn::Pat::Path(_) => (),
value => panic!("expected PatPath, got {:?}", value),
}
}