3 files changed, 27 insertions, 23 deletions

diff --git a/compiler/rustc_parse/src/lexer/mod.rs b/compiler/rustc_parse/src/lexer/mod.rs
index 7db9291921f..9626d4e8171 100644
--- a/compiler/rustc_parse/src/lexer/mod.rs
+++ b/compiler/rustc_parse/src/lexer/mod.rs
@@ -42,9 +42,9 @@ pub struct UnmatchedDelim {
     pub candidate_span: Option<Span>,
 }
 
-pub(crate) fn parse_token_trees<'a>(
-    sess: &'a ParseSess,
-    mut src: &'a str,
+pub(crate) fn parse_token_trees<'sess, 'src>(
+    sess: &'sess ParseSess,
+    mut src: &'src str,
     mut start_pos: BytePos,
     override_span: Option<Span>,
 ) -> Result<TokenStream, Vec<Diagnostic>> {
@@ -90,16 +90,16 @@ pub(crate) fn parse_token_trees<'a>(
     }
 }
 
-struct StringReader<'a> {
-    sess: &'a ParseSess,
+struct StringReader<'sess, 'src> {
+    sess: &'sess ParseSess,
     /// Initial position, read-only.
     start_pos: BytePos,
     /// The absolute offset within the source_map of the current character.
     pos: BytePos,
     /// Source text to tokenize.
-    src: &'a str,
+    src: &'src str,
     /// Cursor for getting lexer tokens.
-    cursor: Cursor<'a>,
+    cursor: Cursor<'src>,
     override_span: Option<Span>,
     /// When a "unknown start of token: \u{a0}" has already been emitted earlier
     /// in this file, it's safe to treat further occurrences of the non-breaking
@@ -107,8 +107,8 @@ struct StringReader<'a> {
     nbsp_is_whitespace: bool,
 }
 
-impl<'a> StringReader<'a> {
-    pub fn dcx(&self) -> &'a DiagCtxt {
+impl<'sess, 'src> StringReader<'sess, 'src> {
+    pub fn dcx(&self) -> &'sess DiagCtxt {
         &self.sess.dcx
     }
 
@@ -526,7 +526,7 @@ impl<'a> StringReader<'a> {
 
     /// Slice of the source text from `start` up to but excluding `self.pos`,
     /// meaning the slice does not include the character `self.ch`.
-    fn str_from(&self, start: BytePos) -> &'a str {
+    fn str_from(&self, start: BytePos) -> &'src str {
         self.str_from_to(start, self.pos)
     }
 
@@ -537,12 +537,12 @@ impl<'a> StringReader<'a> {
     }
 
     /// Slice of the source text spanning from `start` up to but excluding `end`.
-    fn str_from_to(&self, start: BytePos, end: BytePos) -> &'a str {
+    fn str_from_to(&self, start: BytePos, end: BytePos) -> &'src str {
         &self.src[self.src_index(start)..self.src_index(end)]
     }
 
     /// Slice of the source text spanning from `start` until the end
-    fn str_from_to_end(&self, start: BytePos) -> &'a str {
+    fn str_from_to_end(&self, start: BytePos) -> &'src str {
         &self.src[self.src_index(start)..]
     }
 
diff --git a/compiler/rustc_parse/src/lexer/tokentrees.rs b/compiler/rustc_parse/src/lexer/tokentrees.rs
index 64b3928689a..c9ff2d58e2c 100644
--- a/compiler/rustc_parse/src/lexer/tokentrees.rs
+++ b/compiler/rustc_parse/src/lexer/tokentrees.rs
@@ -8,18 +8,18 @@ use rustc_ast_pretty::pprust::token_to_string;
 use rustc_errors::{Applicability, PErr};
 use rustc_span::symbol::kw;
 
-pub(super) struct TokenTreesReader<'a> {
-    string_reader: StringReader<'a>,
+pub(super) struct TokenTreesReader<'sess, 'src> {
+    string_reader: StringReader<'sess, 'src>,
     /// The "next" token, which has been obtained from the `StringReader` but
     /// not yet handled by the `TokenTreesReader`.
     token: Token,
     diag_info: TokenTreeDiagInfo,
 }
 
-impl<'a> TokenTreesReader<'a> {
+impl<'sess, 'src> TokenTreesReader<'sess, 'src> {
     pub(super) fn parse_all_token_trees(
-        string_reader: StringReader<'a>,
-    ) -> (TokenStream, Result<(), Vec<PErr<'a>>>, Vec<UnmatchedDelim>) {
+        string_reader: StringReader<'sess, 'src>,
+    ) -> (TokenStream, Result<(), Vec<PErr<'sess>>>, Vec<UnmatchedDelim>) {
         let mut tt_reader = TokenTreesReader {
             string_reader,
             token: Token::dummy(),
@@ -35,7 +35,7 @@ impl<'a> TokenTreesReader<'a> {
     fn parse_token_trees(
         &mut self,
         is_delimited: bool,
-    ) -> (Spacing, TokenStream, Result<(), Vec<PErr<'a>>>) {
+    ) -> (Spacing, TokenStream, Result<(), Vec<PErr<'sess>>>) {
         // Move past the opening delimiter.
         let (_, open_spacing) = self.bump(false);
 
@@ -71,7 +71,7 @@ impl<'a> TokenTreesReader<'a> {
         }
     }
 
-    fn eof_err(&mut self) -> PErr<'a> {
+    fn eof_err(&mut self) -> PErr<'sess> {
         let msg = "this file contains an unclosed delimiter";
         let mut err = self.string_reader.sess.dcx.struct_span_err(self.token.span, msg);
         for &(_, sp) in &self.diag_info.open_braces {
@@ -99,7 +99,7 @@ impl<'a> TokenTreesReader<'a> {
     fn parse_token_tree_open_delim(
         &mut self,
         open_delim: Delimiter,
-    ) -> Result<TokenTree, Vec<PErr<'a>>> {
+    ) -> Result<TokenTree, Vec<PErr<'sess>>> {
         // The span for beginning of the delimited section
         let pre_span = self.token.span;
 
@@ -229,7 +229,11 @@ impl<'a> TokenTreesReader<'a> {
         (this_tok, this_spacing)
     }
 
-    fn unclosed_delim_err(&mut self, tts: TokenStream, mut errs: Vec<PErr<'a>>) -> Vec<PErr<'a>> {
+    fn unclosed_delim_err(
+        &mut self,
+        tts: TokenStream,
+        mut errs: Vec<PErr<'sess>>,
+    ) -> Vec<PErr<'sess>> {
         // 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.sess, tts, None);
@@ -285,7 +289,7 @@ impl<'a> TokenTreesReader<'a> {
         return errs;
     }
 
-    fn close_delim_err(&mut self, delim: Delimiter) -> PErr<'a> {
+    fn close_delim_err(&mut self, delim: Delimiter) -> PErr<'sess> {
         // An unexpected closing delimiter (i.e., there is no
         // matching opening delimiter).
         let token_str = token_to_string(&self.token);
diff --git a/compiler/rustc_parse/src/lexer/unicode_chars.rs b/compiler/rustc_parse/src/lexer/unicode_chars.rs
index dac7569e385..a136abaa28b 100644
--- a/compiler/rustc_parse/src/lexer/unicode_chars.rs
+++ b/compiler/rustc_parse/src/lexer/unicode_chars.rs
@@ -337,7 +337,7 @@ const ASCII_ARRAY: &[(&str, &str, Option<token::TokenKind>)] = &[
 ];
 
 pub(super) fn check_for_substitution(
-    reader: &StringReader<'_>,
+    reader: &StringReader<'_, '_>,
     pos: BytePos,
     ch: char,
     count: usize,