add Parser::add_unsupported_syntax_error

Author: ntBre

crates/ruff_python_parser/src/parser/mod.rs

@@ -11,7 +11,7 @@ use crate::parser::progress::{ParserProgress, TokenId};
 use crate::token::TokenValue;
 use crate::token_set::TokenSet;
 use crate::token_source::{TokenSource, TokenSourceCheckpoint};
-use crate::{Mode, ParseError, ParseErrorType, TokenKind};
+use crate::{Mode, ParseError, ParseErrorType, TokenKind, UnsupportedSyntaxErrorKind};
 use crate::{Parsed, Tokens};
 
 pub use crate::parser::options::ParseOptions;
@@ -438,6 +438,16 @@ impl<'src> Parser<'src> {
         inner(&mut self.errors, error, ranged.range());
     }
 
+    /// Add an [`UnsupportedSyntaxError`] with the given [`UnsupportedSyntaxErrorKind`] and
+    /// [`TextRange`].
+    fn add_unsupported_syntax_error(&mut self, kind: UnsupportedSyntaxErrorKind, range: TextRange) {
+        self.unsupported_syntax_errors.push(UnsupportedSyntaxError {
+            kind,
+            range,
+            target_version: self.options.target_version,
+        });
+    }
+
     /// Returns `true` if the current token is of the given kind.
     fn at(&self, kind: TokenKind) -> bool {
         self.current_token_kind() == kind

crates/ruff_python_parser/src/parser/statement.rs

@@ -17,7 +17,7 @@ use crate::parser::{
 };
 use crate::token::{TokenKind, TokenValue};
 use crate::token_set::TokenSet;
-use crate::{Mode, ParseErrorType, UnsupportedSyntaxError, UnsupportedSyntaxErrorKind};
+use crate::{Mode, ParseErrorType, UnsupportedSyntaxErrorKind};
 
 use super::expression::ExpressionContext;
 use super::Parenthesized;
@@ -2278,11 +2278,10 @@ impl<'src> Parser<'src> {
         //         pass
 
         if self.options.target_version < PythonVersion::PY310 {
-            self.unsupported_syntax_errors.push(UnsupportedSyntaxError {
-                kind: UnsupportedSyntaxErrorKind::MatchBeforePy310,
-                range: match_range,
-                target_version: self.options.target_version,
-            });
+            self.add_unsupported_syntax_error(
+                UnsupportedSyntaxErrorKind::MatchBeforePy310,
+                match_range,
+            );
         }
 
         ast::StmtMatch {