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* bpo-40334: Add support for feature_version in new PEG parser (GH-19827)Lysandros Nikolaou2020-04-301-1/+9
| | | | | | | | | | | | | | | | | | | `ast.parse` and `compile` support a `feature_version` parameter that tells the parser to parse the input string, as if it were written in an older Python version. The `feature_version` is propagated to the tokenizer, which uses it to handle the three different stages of support for `async` and `await`. Additionally, it disallows the following at parser level: - The '@' operator in < 3.5 - Async functions in < 3.5 - Async comprehensions in < 3.6 - Underscores in numeric literals in < 3.6 - Await expression in < 3.5 - Variable annotations in < 3.6 - Async for-loops in < 3.5 - Async with-statements in < 3.5 - F-strings in < 3.6 Closes we-like-parsers/cpython#124.
* bpo-40334: Fix shifting of nested f-strings in the new parser (GH-19771)Lysandros Nikolaou2020-04-291-0/+9
| | | `JoinedStr`s and `FormattedValue also needs to be shifted, in order to correctly compute the location information of nested f-strings.
* bpo-40334: Support CO_FUTURE_BARRY_AS_BDFL in the new parser (GH-19721)Pablo Galindo2020-04-271-1/+1
| | | This commit also allows to pass flags to the new parser in all interfaces and fixes a bug in the parser generator that was causing to inline rules with actions, making them disappear.
* Compile extensions in test_peg_generator with C99 (GH-19668)Pablo Galindo2020-04-231-14/+10
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* bpo-40334: Fix errors in parse_string.c with old compilers (GH-19666)Pablo Galindo2020-04-231-10/+14
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* bpo-40334: PEP 617 implementation: New PEG parser for CPython (GH-19503)Pablo Galindo2020-04-221-0/+1387
Co-authored-by: Guido van Rossum <guido@python.org> Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
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