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pretty-print-reparse hack: Remove an impossible case 

Delimiters cannot appear as isolated tokens in a token stream
This commit is contained in:
Vadim Petrochenkov 2020-09-26 20:27:14 +03:00
parent 275bf626f6
commit fe3e5aa729
1 changed files with 1 additions and 4 deletions
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5
compiler/rustc_parse/src/lib.rs
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@ -7,7 +7,7 @@
#![feature(or_patterns)]
use rustc_ast as ast;
use rustc_ast::token::{self, DelimToken, Nonterminal, Token, TokenKind};
use rustc_ast::token::{self, Nonterminal, Token, TokenKind};
use rustc_ast::tokenstream::{self, Spacing, TokenStream, TokenTree};
use rustc_ast_pretty::pprust;
use rustc_data_structures::sync::Lrc;
@ -359,9 +359,6 @@ pub fn tokenstream_probably_equal_for_proc_macro(
// The pretty printer tends to add trailing commas to
// everything, and in particular, after struct fields.
| token::Comma
// The pretty printer emits `NoDelim` as whitespace.
| token::OpenDelim(DelimToken::NoDelim)
| token::CloseDelim(DelimToken::NoDelim)
// The pretty printer collapses many semicolons into one.
| token::Semi
// We don't preserve leading `|` tokens in patterns, so