Remove `stream_to_parser`.

It's a zero-value wrapper of `Parser::new`.

2 files changed, 3 insertions, 11 deletions

diff --git a/compiler/rustc_parse/src/lexer/tokentrees.rs b/compiler/rustc_parse/src/lexer/tokentrees.rs
index fcbfa108d06..f7645446081 100644
--- a/compiler/rustc_parse/src/lexer/tokentrees.rs
+++ b/compiler/rustc_parse/src/lexer/tokentrees.rs
@@ -2,6 +2,7 @@ use super::diagnostics::report_suspicious_mismatch_block;
 use super::diagnostics::same_indentation_level;
 use super::diagnostics::TokenTreeDiagInfo;
 use super::{StringReader, UnmatchedDelim};
+use crate::Parser;
 use rustc_ast::token::{self, Delimiter, Token};
 use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
 use rustc_ast_pretty::pprust::token_to_string;
@@ -231,7 +232,7 @@ impl<'psess, 'src> TokenTreesReader<'psess, 'src> {
     ) -> Vec<PErr<'psess>> {
         // If there are unclosed delims, see if there are diff markers and if so, point them
         // out instead of complaining about the unclosed delims.
-        let mut parser = crate::stream_to_parser(self.string_reader.psess, tts, None);
+        let mut parser = Parser::new(self.string_reader.psess, tts, None);
         let mut diff_errs = vec![];
         // Suggest removing a `{` we think appears in an `if`/`while` condition.
         // We want to suggest removing a `{` only if we think we're in an `if`/`while` condition,
diff --git a/compiler/rustc_parse/src/lib.rs b/compiler/rustc_parse/src/lib.rs
index a818aae27b1..5bbbfe1430c 100644
--- a/compiler/rustc_parse/src/lib.rs
+++ b/compiler/rustc_parse/src/lib.rs
@@ -123,7 +123,7 @@ fn maybe_source_file_to_parser(
 ) -> Result<Parser<'_>, Vec<Diag<'_>>> {
     let end_pos = source_file.end_position();
     let stream = maybe_source_file_to_stream(psess, source_file, None)?;
-    let mut parser = stream_to_parser(psess, stream, None);
+    let mut parser = Parser::new(psess, stream, None);
     if parser.token == token::Eof {
         parser.token.span = Span::new(end_pos, end_pos, parser.token.span.ctxt(), None);
     }
@@ -168,15 +168,6 @@ fn maybe_source_file_to_stream<'psess>(
     lexer::lex_token_trees(psess, src.as_str(), source_file.start_pos, override_span)
 }
 
-/// Given a stream and the `ParseSess`, produces a parser.
-pub fn stream_to_parser<'a>(
-    psess: &'a ParseSess,
-    stream: TokenStream,
-    subparser_name: Option<&'static str>,
-) -> Parser<'a> {
-    Parser::new(psess, stream, subparser_name)
-}
-
 /// Runs the given subparser `f` on the tokens of the given `attr`'s item.
 pub fn parse_in<'a, T>(
     psess: &'a ParseSess,