From: Tanvi Moharir <74228962+tanvimoharir@users.noreply.github.com> Date: Sat, 4 Dec 2021 20:21:26 +0000 (+0530) Subject: Don't let TokenError bubble up from lib2to3_parse (GH-2343) X-Git-Url: https://git.madduck.net/etc/vim.git/commitdiff_plain/f52cb0fe3775829245acfeae191e8d63120c8416?ds=inline Don't let TokenError bubble up from lib2to3_parse (GH-2343) error: cannot format : ('EOF in multi-line statement', (2, 0)) ▲ before ▼ after error: cannot format : Cannot parse: 2:0: EOF in multi-line statement Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com> --- diff --git a/CHANGES.md b/CHANGES.md index e5f4a1f..5d89c71 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -19,6 +19,7 @@ - Add `flake8-simplify` and `flake8-comprehensions` plugins (#2653) - Fix determination of f-string expression spans (#2654) - Fix parser error location on invalid syntax in a `match` statement (#2649) +- Fix bad formatting of error messages about EOF in multi-line statements (#2343) - Functions and classes in blocks now have more consistent surrounding spacing (#2472) ## 21.11b1 diff --git a/src/black/parsing.py b/src/black/parsing.py index e384056..b673027 100644 --- a/src/black/parsing.py +++ b/src/black/parsing.py @@ -17,6 +17,7 @@ from blib2to3 import pygram from blib2to3.pgen2 import driver from blib2to3.pgen2.grammar import Grammar from blib2to3.pgen2.parse import ParseError +from blib2to3.pgen2.tokenize import TokenError from black.mode import TargetVersion, Feature, supports_feature from black.nodes import syms @@ -109,6 +110,12 @@ def lib2to3_parse(src_txt: str, target_versions: Iterable[TargetVersion] = ()) - except IndexError: faulty_line = "" exc = InvalidInput(f"Cannot parse: {lineno}:{column}: {faulty_line}") + + except TokenError as te: + # In edge cases these are raised; and typically don't have a "faulty_line". + lineno, column = te.args[1] + exc = InvalidInput(f"Cannot parse: {lineno}:{column}: {te.args[0]}") + else: raise exc from None diff --git a/tests/test_black.py b/tests/test_black.py index 51a2030..9259853 100644 --- a/tests/test_black.py +++ b/tests/test_black.py @@ -1557,6 +1557,15 @@ class BlackTestCase(BlackBaseTestCase): call_args[0].lower() == str(pyproject_path).lower() ), "Incorrect config loaded." + def test_for_handled_unexpected_eof_error(self) -> None: + """ + Test that an unexpected EOF SyntaxError is nicely presented. + """ + with pytest.raises(black.parsing.InvalidInput) as exc_info: + black.lib2to3_parse("print(", {}) + + exc_info.match("Cannot parse: 2:0: EOF in multi-line statement") + class TestCaching: def test_cache_broken_file(self) -> None: