move eof_err below parsing logic

Signed-off-by: xizheyin <[email protected]>

Author: xizheyin

compiler/rustc_parse/src/lexer/tokentrees.rs

@@ -53,44 +53,6 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
         }
     }
 
-    fn eof_err(&mut self) -> Diag<'psess> {
-        let msg = "this file contains an unclosed delimiter";
-        let mut err = self.dcx().struct_span_err(self.token.span, msg);
-
-        let len = usize::min(UNCLOSED_DELIMITER_SHOW_LIMIT, self.diag_info.open_delimiters.len());
-        for &(_, span) in &self.diag_info.open_delimiters[..len] {
-            err.span_label(span, "unclosed delimiter");
-            self.diag_info.unmatched_delims.push(UnmatchedDelim {
-                found_delim: None,
-                found_span: self.token.span,
-                unclosed_span: Some(span),
-                candidate_span: None,
-            });
-        }
-
-        if let Some((_, span)) = self.diag_info.open_delimiters.get(UNCLOSED_DELIMITER_SHOW_LIMIT)
-            && self.diag_info.open_delimiters.len() >= UNCLOSED_DELIMITER_SHOW_LIMIT + 2
-        {
-            err.span_label(
-                *span,
-                format!(
-                    "another {} unclosed delimiters begin from here",
-                    self.diag_info.open_delimiters.len() - UNCLOSED_DELIMITER_SHOW_LIMIT
-                ),
-            );
-        }
-
-        if let Some((delim, _)) = self.diag_info.open_delimiters.last() {
-            report_suspicious_mismatch_block(
-                &mut err,
-                &self.diag_info,
-                self.psess.source_map(),
-                *delim,
-            )
-        }
-        err
-    }
-
     fn lex_token_tree_open_delim(
         &mut self,
         open_delim: Delimiter,
@@ -241,6 +203,44 @@ impl<'psess, 'src> Lexer<'psess, 'src> {
         this_spacing
     }
 
+    fn eof_err(&mut self) -> Diag<'psess> {
+        let msg = "this file contains an unclosed delimiter";
+        let mut err = self.dcx().struct_span_err(self.token.span, msg);
+
+        let len = usize::min(UNCLOSED_DELIMITER_SHOW_LIMIT, self.diag_info.open_delimiters.len());
+        for &(_, span) in &self.diag_info.open_delimiters[..len] {
+            err.span_label(span, "unclosed delimiter");
+            self.diag_info.unmatched_delims.push(UnmatchedDelim {
+                found_delim: None,
+                found_span: self.token.span,
+                unclosed_span: Some(span),
+                candidate_span: None,
+            });
+        }
+
+        if let Some((_, span)) = self.diag_info.open_delimiters.get(UNCLOSED_DELIMITER_SHOW_LIMIT)
+            && self.diag_info.open_delimiters.len() >= UNCLOSED_DELIMITER_SHOW_LIMIT + 2
+        {
+            err.span_label(
+                *span,
+                format!(
+                    "another {} unclosed delimiters begin from here",
+                    self.diag_info.open_delimiters.len() - UNCLOSED_DELIMITER_SHOW_LIMIT
+                ),
+            );
+        }
+
+        if let Some((delim, _)) = self.diag_info.open_delimiters.last() {
+            report_suspicious_mismatch_block(
+                &mut err,
+                &self.diag_info,
+                self.psess.source_map(),
+                *delim,
+            )
+        }
+        err
+    }
+
     fn close_delim_err(&mut self, delim: Delimiter) -> Diag<'psess> {
         // An unexpected closing delimiter (i.e., there is no matching opening delimiter).
         let token_str = token_to_string(&self.token);