Commit Graph

165 Commits

Author SHA1 Message Date
Yurii Karabas bf89ff96e6
bpo-44490: Improve typing module compatibility with types.Union (GH-27048) 2021-07-16 20:33:40 -07:00
Serhiy Storchaka 2ea6d89028
bpo-43833: Emit warnings for numeric literals followed by keyword (GH-25466)
Emit a deprecation warning if the numeric literal is immediately followed by
one of keywords: and, else, for, if, in, is, or. Raise a syntax error with
more informative message if it is immediately followed by other keyword or
identifier.

Automerge-Triggered-By: GH:pablogsal
2021-06-08 16:31:10 -07:00
Erlend Egeberg Aasland e467ec476f
bpo-43995: Fix reference leak in test_grammar (GH-25764) 2021-05-01 00:23:14 +01:00
larryhastings 2f2b69855d
bpo-43901: Lazy-create an empty annotations dict in all unannotated user classes and modules (#25623)
Change class and module objects to lazy-create empty annotations dicts on demand.  The annotations dicts are stored in the object's `__dict__` for backwards compatibility.
2021-04-29 20:09:08 -07:00
Pablo Galindo b0544ba77c
bpo-38605: Revert making 'from __future__ import annotations' the default (GH-25490)
This reverts commits 044a1048ca and 1be456ae9d, adapting the code to changes that happened after it.
2021-04-21 12:41:19 +01:00
tsukasa-au a8ef4572a6
bpo-43497: Emit SyntaxWarnings for assertions with tuple constants. (GH-24867)
* bpo-43497: Emit SyntaxWarnings for assertions with tuple constants.

Add a test that shows that a tuple constant (a tuple, where all of its
members are also compile-time constants) produces a SyntaxWarning. Then
fix this failure.

* Make SyntaxWarnings also work when "optimized".

* Split tests for SyntaxWarning to SyntaxError conversion

SyntaxWarnings emitted by the compiler when configured to be errors are
actually raised as SyntaxError exceptions.

Move these tests into their own method and add a test to ensure they are
raised. Previously we only tested that they were not raised for a
"valid" assertion statement.
2021-03-16 11:14:41 +00:00
Pablo Galindo d6d6371447
bpo-42864: Improve error messages regarding unclosed parentheses (GH-24161) 2021-01-19 23:59:33 +00:00
Batuhan Taskaya 044a1048ca
bpo-38605: Make 'from __future__ import annotations' the default (GH-20434)
The hard part was making all the tests pass; there are some subtle issues here, because apparently the future import wasn't tested very thoroughly in previous Python versions.

For example, `inspect.signature()` returned type objects normally (except for forward references), but strings with the future import. We changed it to try and return type objects by calling `typing.get_type_hints()`, but fall back on returning strings if that function fails (which it may do if there are future references in the annotations that require passing in a specific namespace to resolve).
2020-10-06 13:03:02 -07:00
Serhiy Storchaka 12f433411b
bpo-41334: Convert constructors of str, bytes and bytearray to Argument Clinic (GH-21535) 2020-07-20 15:53:55 +03:00
Hai Shi 0c4f0f3b29
bpo-40275: Use new test.support helper submodules in tests (GH-21169) 2020-06-30 15:46:31 +02:00
Pablo Galindo 1ed83adb0e
bpo-40939: Remove the old parser (GH-20768)
This commit removes the old parser, the deprecated parser module, the old parser compatibility flags and environment variables and all associated support code and documentation.
2020-06-11 17:30:46 +01:00
Lysandros Nikolaou ce21cfca7b
bpo-40618: Disallow invalid targets in augassign and except clauses (GH-20083)
This commit fixes the new parser to disallow invalid targets in the
following scenarios:
- Augmented assignments must only accept a single target (Name,
  Attribute or Subscript), but no tuples or lists.
- `except` clauses should only accept a single `Name` as a target.

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
2020-05-14 21:13:50 +01:00
Shantanu 27c0d9b54a
bpo-40334: produce specialized errors for invalid del targets (GH-19911) 2020-05-11 14:53:58 -07:00
Pablo Galindo 99db2a1db7
bpo-40334: Allow trailing comma in parenthesised context managers (GH-19964) 2020-05-06 22:54:34 +01:00
Brandt Bucher be501ca241
bpo-39702: Relax grammar restrictions on decorators (PEP 614) (GH-18570) 2020-03-03 14:25:44 -08:00
Serhiy Storchaka ef61c524dd
bpo-37830: Fix compilation of break and continue in finally. (GH-15320)
Fix compilation of "break" and "continue" in the
"finally" block when the corresponding "try" block
contains "return" with a non-constant value.
2019-08-24 13:11:52 +03:00
Pablo Galindo 8565f6b6db
bpo-35814: Allow unpacking in r.h.s of annotated assignment expressions (GH-13760) 2019-06-03 08:34:20 +01:00
Pablo Galindo a0c01bf136
bpo-37115: Support annotations in positional-only arguments (GH-13698) 2019-05-31 15:19:50 +01:00
Serhiy Storchaka e7a4bb554e
bpo-35798: Add test.support.check_syntax_warning(). (#11895)
It checks that a SyntaxWarning is raised when compile specified
statement, that it is raised only once, that it is converted to
a SyntaxError when raised as exception, and that both warning and
exception objects have corresponding attributes.
2019-02-19 08:30:15 +02:00
Serhiy Storchaka 62e4481238
bpo-15248: Emit a compiler warning when missed a comma before tuple or list. (GH-11757) 2019-02-16 08:12:19 +02:00
Ivan Levkivskyi 62c35a8a8f
bpo-35814: Allow same r.h.s. in annotated assignments as in normal ones (GH-11667) 2019-01-25 01:39:19 +00:00
Serhiy Storchaka 3bcbedc9f1
bpo-34850: Emit a warning for "is" and "is not" with a literal. (GH-9642) 2019-01-18 07:47:48 +02:00
Serhiy Storchaka d31e7730cd
bpo-35029: Replace the SyntaxWarning exception with a SyntaxError. (GH-9999)
If SyntaxWarning was raised as an exception, it will be replaced
with a SyntaxError for better error reporting.
2018-10-21 10:09:39 +03:00
Serhiy Storchaka 4642d5f598
Use assertEqual() instead of assertEquals(). (GH-9721)
Fixes warnings in tests added in bpo-32117 and bpo-34603.
2018-10-05 21:09:56 +03:00
David Cuthbert fd97d1f1af bpo-32117: Allow tuple unpacking in return and yield statements (gh-4509)
Iterable unpacking is now allowed without parentheses in yield and return
statements, e.g. ``yield 1, 2, 3, *rest``. Thanks to David Cuthbert for the
change and jChapman for added tests.
2018-09-21 18:31:15 -07:00
Serhiy Storchaka cf7303ed2a
bpo-33305: Improve SyntaxError for invalid numerical literals. (GH-6517) 2018-07-09 15:09:35 +03:00
Serhiy Storchaka fe2bbb1869
bpo-32489: Allow 'continue' in 'finally' clause. (GH-5822) 2018-03-18 09:56:52 +02:00
Serhiy Storchaka 07ca9afaa8
bpo-10544: Disallow "yield" in comprehensions and generator expressions. (GH-4564) 2018-02-04 10:53:48 +02:00
Serhiy Storchaka 0cc99c8cd7
bpo-32482: Fix suspicious code in tests for syntax and grammar. (#5086) 2018-01-04 10:36:35 +02:00
Serhiy Storchaka 7cc42c356b
bpo-32478: Add tests for 'break' and 'return' inside 'finally' clause. (#5078) 2018-01-02 02:38:35 +02:00
Serhiy Storchaka 73a7e9b10b bpo-10544: Deprecate "yield" in comprehensions and generator expressions. (GH-4579)
The current behaviour of yield expressions inside comprehensions  and
generator expressions is essentially an accident of implementation - it
arises implicitly from the way the compiler handles yield expressions inside
nested functions and generators.

Since the current behaviour wasn't deliberately designed, and is inherently
confusing, we're deprecating it, with no current plans to reintroduce it.
Instead, our advice will be to use a named nested generator definition
for cases where this behaviour is desired.
2017-12-01 14:54:17 +10:00
Guido van Rossum f570d0f117 issue #28622: Remove redundant variable annotation test from test_grammar. Ivan L. 2016-11-06 18:25:39 -08:00
Yury Selivanov 8987c9d219 Issue #26182: Raise DeprecationWarning for improper use of async/await keywords 2016-09-15 12:50:23 -04:00
Guido van Rossum 015d874626 Issue #28076: Variable annotations should be mangled for private names.
By Ivan Levkivskyi.
2016-09-11 09:45:24 -07:00
Brett Cannon a721abac29 Issue #26331: Implement the parsing part of PEP 515.
Thanks to Georg Brandl for the patch.
2016-09-09 14:57:09 -07:00
Yury Selivanov f8cb8a16a3 Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations.
Patch by Ivan Levkivskyi.
2016-09-08 20:50:03 -07:00
Serhiy Storchaka 64204de04c Issue #27095: Simplified MAKE_FUNCTION and removed MAKE_CLOSURE opcodes.
Patch by Demur Rumed.
2016-06-12 17:36:24 +03:00
Yury Selivanov 711d25db48 Merge 3.5 (issue #27243) 2016-06-09 15:13:16 -04:00
Yury Selivanov a6f6edbda8 Issue #27243: Fix __aiter__ protocol 2016-06-09 15:08:31 -04:00
Victor Stinner a07614aa31 Merge 3.5 2016-04-12 18:33:54 +02:00
Victor Stinner c6ec54d8eb Issue #26647: Fix typo in test_grammar
Patch written by Demur Rumed.
2016-04-12 18:33:41 +02:00
Victor Stinner 15a3095d64 compiler: don't emit SyntaxWarning on const stmt
Issue #26204: the compiler doesn't emit SyntaxWarning warnings anymore when
constant statements are ignored.
2016-02-08 22:45:06 +01:00
Victor Stinner a2724095cd compiler now ignores constant statements
The compile ignores constant statements and emit a SyntaxWarning warning.

Don't emit the warning for string statement because triple quoted string is a
common syntax for multiline comments.

Don't emit the warning on ellipis neither: 'def f(): ...' is a legit syntax for
abstract functions.

Changes:

* test_ast: ignore SyntaxWarning when compiling test statements. Modify
  test_load_const() to use assignment expressions rather than constant
  expression.
* test_code: add more kinds of constant statements, ignore SyntaxWarning when
  testing that the compiler removes constant statements.
* test_grammar: ignore SyntaxWarning on the statement "1"
2016-02-08 18:17:58 +01:00
Robert Collins df395991f6 Issue #9232: Support trailing commas in function declarations.
For example, "def f(*, a = 3,): pass" is now legal.

Patch from Mark Dickinson.
2015-08-12 08:00:06 +12:00
Yury Selivanov 14acf5f41d Issue #24791: Fix grammar regression for call syntax: 'g(*a or b)'. 2015-08-05 17:54:10 -04:00
Zachary Ware 13db76a974 Issue #23182: Merge with 3.4 2015-08-01 21:57:22 -05:00
Zachary Ware ce17f76475 Issue #23182: PEP8-ify the annotation grammar tests. Patch by Ian Lee. 2015-08-01 21:55:36 -05:00
Yury Selivanov f315c1c016 Issue #24687: Plug refleak on SyntaxError in function parameters annotations. 2015-07-23 09:10:44 +03:00
Yury Selivanov 8fb307cd65 Issue #24619: New approach for tokenizing async/await.
This commit fixes how one-line async-defs and defs are tracked
by tokenizer.  It allows to correctly parse invalid code such
as:

>>> async def f():
...     def g(): pass
...     async = 10

and valid code such as:

>>> async def f():
...     async def g(): pass
...     await z

As a consequence, is is now possible to have one-line
'async def foo(): await ..' functions:

>>> async def foo(): return await bar()
2015-07-22 13:33:45 +03:00
Benjamin Peterson de12b79cd6 allow test node after ** in calls (closes #24176) 2015-05-16 09:44:45 -04:00