Method parse_import_statement

crates/ruff_python_parser/src/parser/statement.rs:607–641

Parses an import statement. # Panics If the parser isn't positioned at an `import` token. See:

(&mut self, start: TextSize, is_lazy: bool)

    ///
    /// See: <https://docs.python.org/3/reference/simple_stmts.html#the-import-statement>
    fn parse_import_statement(&mut self, start: TextSize, is_lazy: bool) -> ast::StmtImport {
        self.bump(TokenKind::Import);

        // test_err import_stmt_parenthesized_names
        // import (a)
        // import (a, b)

        // test_err import_stmt_star_import
        // import *
        // import x, *, y

        // test_err import_stmt_trailing_comma
        // import ,
        // import x, y,

        let names_snapshot = self.alias_scratch.snapshot();
        self.parse_comma_separated_list(RecoveryContextKind::ImportNames, |parser| {
            let alias = parser.parse_alias(ImportStyle::Import);
            parser.alias_scratch.push(alias);
        });
        let names: Vec<_> = self.alias_scratch.take(names_snapshot);

        if names.is_empty() {
            // test_err import_stmt_empty
            // import
            self.add_error(ParseErrorType::EmptyImportNames, self.current_token_range());
        }

        ast::StmtImport {
            names,
            is_lazy,
            range: self.node_range(start),
            node_index: AtomicNodeIndex::NONE,
        }
    }

    /// Parses a `from` import statement.
    ///