delta/cpython-git.git/Python/graminit.c, branch misc-acks-comment

bpo-11410: Standardize and use symbol visibility attributes across POSIX and Windows. (GH-16347)

2019-10-15T07:26:12+00:00

bpo-35814: Allow unpacking in r.h.s of annotated assignment expressions (GH-13760)

2019-06-03T07:34:20+00:00

bpo-36540: PEP 570 -- Implementation (GH-12701)

2019-04-29T12:36:57+00:00

This commit contains the implementation of PEP570: Python positional-only parameters.

* Update Grammar/Grammar with new typedarglist and varargslist

* Regenerate grammar files

* Update and regenerate AST related files

* Update code object

* Update marshal.c

* Update compiler and symtable

* Regenerate importlib files

* Update callable objects

* Implement positional-only args logic in ceval.c

* Regenerate frozen data

* Update standard library to account for positional-only args

* Add test file for positional-only args

* Update other test files to account for positional-only args

* Add News entry

* Update inspect module and related tests

use `const` in graminit.c (GH-12713)

2019-04-23T09:29:57+00:00

bpo-36623: Clean parser headers and include files (GH-12253)

2019-04-13T16:05:14+00:00

After the removal of pgen, multiple header and function prototypes that lack implementation or are unused are still lying around.

Remove d_initial from the parser as it is unused (GH-12212)

2019-03-09T15:35:50+00:00

d_initial, the first state of a particular DFA in the parser has always been initialized to 0 in the old pgen as well as the new pgen. As this value is not used and the first state of each DFA is assumed to be the first element in the array representing it, remove d_initial from the parser to reduce complexity.

bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086)

2019-03-07T20:38:08+00:00

This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.)



https://bugs.python.org/issue35975

bpo-35808: Retire pgen and use pgen2 to generate the parser (GH-11814)

2019-03-01T23:34:44+00:00

Pgen is the oldest piece of technology in the CPython repository, building it requires various #if[n]def PGEN hacks in other parts of the code and it also depends more and more on CPython internals. This commit removes the old pgen C code and replaces it for a new version implemented in pure Python. This is a modified and adapted version of lib2to3/pgen2 that can generate grammar files compatibles with the current parser.

This commit also eliminates all the #ifdef and code branches related to pgen, simplifying the code and making it more maintainable. The regen-grammar step now uses $(PYTHON_FOR_REGEN) that can be any version of the interpreter, so the new pgen code maintains compatibility with older versions of the interpreter (this also allows regenerating the grammar with the current CI solution that uses Python3.5). The new pgen Python module also makes use of the Grammar/Tokens file that holds the token specification, so is always kept in sync and avoids having to maintain duplicate token definitions.

bpo-35877: Make parenthesis optional for named expression in while statement (GH-11724)

2019-02-01T21:40:16+00:00

* Add parenthesis optional in named expressions for while statement

* Add NEWS entry

bpo-35766: Merge typed_ast back into CPython (GH-11645)

2019-01-31T11:40:27+00:00