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103 Commits

Author SHA1 Message Date
Lysandros Nikolaou
9c4232ae89 gh-99211: Point to except/except* on syntax errors when mixing them (GH-99215) 
Automerge-Triggered-By: GH:lysnikolaou
 2022-11-20 09:11:02 -08:00
Irit Katriel
61b6c40b64 gh-99153: set location on SyntaxError for try with both except and except* (GH-99160) 2022-11-06 15:36:19 +00:00
Pablo Galindo Salgado
395d4285bf gh-98931: Improve error message when the user types 'import x from y' instead of 'from y import x' (#98932) 2022-11-01 13:01:20 +00:00
Lysandros Nikolaou
7e36abbb78 gh-91210: Improve error message when non-default param follows default (GH-95933) 
- Improve error message when parameter without a default follows one with a default
- Show same error message when positional-only params precede the default/non-default sequence
 2022-09-17 10:09:28 -07:00
Nikita Sobolev
2c7d2e8d46 gh-96587: Raise SyntaxError for PEP654 on older feature_version (#96588) 2022-09-05 17:54:09 +01:00
Shantanu
a965db37f2 gh-94996: Disallow lambda pos only params with feature_version < (3, 8) (GH-95934) 2022-08-12 20:41:02 +02:00
Shantanu
b5e3ea2862 gh-94996: Disallow parsing pos only params with feature_version < (3, 8) (GH-94997) 2022-08-12 19:27:50 +02:00
Shantanu
0daba82221 gh-94949: Disallow parsing parenthesised ctx mgr with old feature_version (#94950) 
* gh-94949: Disallow parsing parenthesised ctx manager with old feature_version

* 📜🤖 Added by blurb_it.

* Allow it with feature_version=(3, 9) as well

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
 2022-07-18 22:10:49 +01:00
Shantanu
ae0be5a53b gh-94947: Disallow parsing walrus with feature_version < (3, 8) (#94948) 
* gh-94947: Disallow parsing walrus with feature_version < (3, 8)

* oops, commit the parser

* 📜🤖 Added by blurb_it.

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
 2022-07-18 10:20:12 +01:00
wookie184
8c237a7a71 gh-94192: Fix error for dictionary literals with invalid expression as value. (#94304) 
* Fix error for dictionary literals with invalid expression as value.

* Remove trailing whitespace
 2022-06-26 19:42:47 +01:00
wookie184
2fc83ac3af gh-92858: Improve error message for some suites with syntax error before ':' (#92894) 2022-06-23 17:31:09 +01:00
Pablo Galindo Salgado
53a8b17895 gh-93671: Avoid exponential backtracking in deeply nested sequence patterns in match statements (GH-93680) 
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
 2022-06-10 17:56:45 +02:00
Matthieu Dartiailh
aa0f056a00 bpo-47212: Improve error messages for un-parenthesized generator expressions (GH-32302) 2022-04-05 14:47:13 +01:00
Matthew Rahtz
e8e737bcf6 bpo-43224: Implement PEP 646 grammar changes (GH-31018) 
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
 2022-03-26 09:55:35 -07:00
Pablo Galindo Salgado
7d810b6a4e bpo-46838: Syntax error improvements for function definitions (GH-31590) 2022-03-22 11:38:41 +00:00
Pablo Galindo Salgado
390459de6d Allow the parser to avoid nested processing of invalid rules (GH-31252) 2022-02-10 13:12:14 +00:00
Pablo Galindo Salgado
b71dc71905 bpo-46707: Avoid potential exponential backtracking in some syntax errors (GH-31241) 2022-02-10 03:37:17 +00:00
Mark Dickinson
1bee9a4625 bpo-46272: Fix two heading comments in python.gram (GH-30499) 
One typo fix and one heading change, both in comments. No functional changes.
 2022-01-09 08:22:54 -08:00
Irit Katriel
d60457a667 bpo-45292: [PEP-654] add except* (GH-29581) 2021-12-14 16:48:15 +00:00
Pablo Galindo Salgado
24c10d2943 bpo-45727: Only trigger the 'did you forgot a comma' error suggestion if inside parentheses (GH-29757) 2021-11-24 22:21:23 +00:00
Pablo Galindo Salgado
7a1d932528 bpo-45450: Improve syntax error for parenthesized arguments (GH-28906) 2021-11-20 18:27:40 +00:00
Pablo Galindo Salgado
546cefcda7 bpo-45727: Make the syntax error for missing comma more consistent (GH-29427) 2021-11-19 23:11:57 +00:00
Carl Friedrich Bolz-Tereick
2819e98d10 bpo-45764: improve error message when missing '(' after 'def' (GH-29484) 
to achieve this, change the grammar to expect the '(' token after 'def' NAME.

Automerge-Triggered-By: GH:pablogsal
 2021-11-09 06:03:32 -08:00
Pablo Galindo Salgado
e2d65630f3 bpo-45716: Improve the error message when using True/False/None as keywords in a call (GH-29413) 2021-11-05 13:54:55 +00:00
wim glenn
762173c670 bpo-44257: fix "assigment_expr" typo + regenerate the grammar, and remove unused imports (GH-29393) 
Co-authored-by: Wim Glenn <wglenn@jumptrading.com>
 2021-11-03 20:57:40 +00:00
Pablo Galindo Salgado
e5f13ce5b4 bpo-43914: Correctly highlight SyntaxError exceptions for invalid generator expression in function calls (GH-28576) 2021-09-27 14:37:43 +01:00
Pablo Galindo Salgado
b2f68b1900 bpo-44947: Refine the syntax error for trailing commas in import statements (GH-27814) 2021-08-18 22:09:21 +02:00
Pablo Galindo Salgado
f5cbea6b1b bpo-44838: Refine the custom syntax errors for invalid 'if' expressions (GH-27615) 2021-08-05 18:28:57 +01:00
Miguel Brito
28b6dc9dd5 bpo-44792: Improve syntax errors for if expressions (GH-27506) 2021-08-02 18:11:37 +01:00
Pablo Galindo Salgado
208a7e957b bpo-34013: Don't consider a grouped expression when reporting legacy print syntax errors (GH-27521) 2021-08-01 02:10:50 +01:00
Pablo Galindo Salgado
302cf35505 Divide the grammar into sections to improve readability (GH-27502) 2021-07-31 13:04:37 +01:00
Pablo Galindo Salgado
ecc3c8e421 bpo-34013: Move the Python 2 hints from the exception constructor to the parser (GH-27392) 2021-07-27 21:30:32 +01:00
Pablo Galindo Salgado
6948964ecf bpo-34013: Generalize the invalid legacy statement error message (GH-27389) 2021-07-27 17:19:22 +01:00
Pablo Galindo Salgado
a283ef116b Remove unnecessary 'invalid_primary' rule in the parser (GH-27186) 2021-07-16 13:20:09 +01:00
Pablo Galindo
0acc258fe6 bpo-44456: Improve the syntax error when mixing keyword and positional patterns (GH-26793) 2021-06-24 16:09:57 +01:00
Pablo Galindo
05073036dc bpo-44368: Improve syntax errors with invalid as pattern targets (GH-26632) 2021-06-10 23:50:32 +01:00
Lysandros Nikolaou
e7b4644607 bpo-44385: Remove unused grammar rules (GH-26655) 
Automerge-Triggered-By: GH:lysnikolaou
 2021-06-10 15:05:06 -07:00
Pablo Galindo
b250f89bb7 bpo-44305: Improve syntax error for try blocks without except or finally (GH-26523) 2021-06-03 23:52:12 +01:00
Pablo Galindo
c878a97968 bpo-44180: Fix edge cases in invalid assigment rules in the parser (GH-26283) 
The invalid assignment rules are very delicate since the parser can
easily raise an invalid assignment when a keyword argument is provided.
As they are very deep into the grammar tree, is very difficult to
specify in which contexts these rules can be used and in which don't.
For that, we need to use a different version of the rule that doesn't do
error checking in those situations where we don't want the rule to raise
(keyword arguments and generator expressions).

We also need to check if we are in left-recursive rule, as those can try
to eagerly advance the parser even if the parse will fail at the end of
the expression. Failing to do this allows the parser to start parsing a
call as a tuple and incorrectly identify a keyword argument as an
invalid assignment, before it realizes that it was not a tuple after all.
 2021-05-21 18:34:54 +01:00
Pablo Galindo
33c0c90dea bpo-44168: Fix error message in the parser for keyword arguments for invalid expressions (GH-26210) 2021-05-19 19:03:04 +01:00
Pablo Galindo
6692dc1ca9 bpo-43149: Correct the syntax error message for multiple exception types (GH-25996) 
Automerge-Triggered-By: GH:pablogsal
 2021-05-08 11:24:41 -07:00
Brandt Bucher
dbe60ee09d bpo-43892: Validate the first term of complex literal value patterns (GH-25735) 2021-04-29 17:19:28 -07:00
Nick Coghlan
1e7b858575 bpo-43892: Make match patterns explicit in the AST (GH-25585) 
Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
 2021-04-28 22:58:44 -07:00
Pablo Galindo
a77aac4fca bpo-43914: Highlight invalid ranges in SyntaxErrors (#25525) 
To improve the user experience understanding what part of the error messages associated with SyntaxErrors is wrong, we can highlight the whole error range and not only place the caret at the first character. In this way:

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^
SyntaxError: Generator expression must be parenthesized

becomes

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^^^^^^^^^^^^^^^^^^^^
SyntaxError: Generator expression must be parenthesized
 2021-04-23 14:27:05 +01:00
Pablo Galindo
56c95dfe27 bpo-43859: Improve the error message for IndentationError exceptions (GH-25431) 2021-04-21 15:28:21 +01:00
Pablo Galindo
b5b98bd8f8 bpo-43823: Fix location of one of the errors for invalid dictionary literals (GH-25427) 2021-04-16 00:45:42 +01:00
Pablo Galindo
b280248be8 bpo-43822: Improve syntax errors for missing commas (GH-25377) 2021-04-15 21:38:45 +01:00
Pablo Galindo
da74350174 bpo-43823: Improve syntax errors for invalid dictionary literals (GH-25378) 2021-04-15 14:06:39 +01:00
Pablo Galindo
30ed93bfec bpo-43797: Handle correctly invalid assignments inside function calls and generators (GH-25390) 2021-04-13 17:51:21 +01:00
Pablo Galindo
d9151cb453 Ensure that early = are not matched by the parser as invalid comparisons (GH-25375) 2021-04-13 02:32:33 +01:00