v0.4.9

Updated

• Bump setuptools-rust version by @zsol in #809

Full Changelog: v0.4.8...v0.4.9

v0.4.8

New Contributors

• @dhruvmanila made their first contribution in #728
• @vfazio made their first contribution in #801
• @matthewshaer made their first contribution in #807

Fixed

• Fix parse error message for number parsing by @zzl0 in #724
• Fix problematic doc build, due to the new builder image provided by readthedocs doesn't has the graphviz-dev package pre-installed any more by @MapleCCC in #751
• Fix docstring of FullRepoManager by @MapleCCC in #750
• Fix bug when TypeOf is one of options in OneOf / AllOf by @MapleCCC in #756
• Tighten the metadata type of ExpressionContextProvider by @MapleCCC in #760
• Fix the bug that the use of formatter in codemods has undetermined target Python version, resulting in hard-to-reason-with behavior by @MapleCCC in #771

Added

• Python 3.11 rutime support
  • test using python 3.11 beta versions by @zsol in #723
  • Python 3.11 wheels by @vfazio in #801
• Raise informative exception when metadata is unresolved in a metadata-based match by @MapleCCC in #757
• Add AccessorProvider by @matthewshaer in #807

Full Changelog: v0.4.7...v0.4.8

v0.4.7

New Contributors

• @Chenguang-Zhu made their first contribution in #720

Fixed

• Fix get_qualified_names_for matching on prefixes of the given name by @lpetre in #719

Added

• Implement lazy loading mechanism for expensive metadata providers by @Chenguang-Zhu in #720

Full Changelog: v0.4.6...v0.4.7

v0.4.6

New Contributors

• @superbobry made their first contribution in #702

Fixed

• convert_type_comments now preserves comments following type comments by @superbobry in #702
• QualifiedNameProvider optimizations
  • Cache the scope name prefix to prevent scope traversal in a tight loop by @lpetre in #708
  • Faster qualified name formatting by @lpetre in #710
  • Prevent unnecessary work in Scope.get_qualified_names_for_ by @lpetre in #709
• Fix parsing of parenthesized empty tuples by @zsol in #712
• Support whitespace after ParamSlash by @zsol in #713
• [parser] bail on deeply nested expressions by @zsol in #718

v0.4.5

New Contributors

• @zzl0 made their first contribution in #704

Fixes

• Only skip supported escaped characters in f-strings by @zsol in #700
• Escaping quote characters in raw string literals causes a tokenizer error by @zsol in #668
• Corrected a code example in the documentation by @zzl0 in #703
• Handle multiline strings that start with quotes by @zzl0 in #704
• Fixed a performance regression in libcst.metadata.ScopeProvider by @lpetre in #698

Full Changelog: v0.4.4...v0.4.5

v0.4.4

New Contributors

• @adamchainz made their first contribution in #688

Added

• Add package links to PyPI by @adamchainz in #688
• native: add overall benchmark by @zsol in #692
• Add support for PEP-646 by @zsol in #696

Updated

• parser: use references instead of smart pointers for Tokens by @zsol in #691

Full Changelog: v0.4.3...v0.4.4

v0.4.3

Fixed

• Restore the 0.4.1 behavior for libcst.helpers.get_absolute_module by @lpetre in #684

Full Changelog: v0.4.2...v0.4.3

v0.4.2

New Contributors

• @stanislavlevin made their first contribution in #650
• @dmitryvinn made their first contribution in #655
• @wiyr made their first contribution in #669
• @toofar made their first contribution in #675

Fixed

• native: Avoid crashing by making IntoPy conversion fallible by @zsol in #639
• native: make sure ParserError's line is zero-indexed by @zsol in #681
• Fix space validation for AsName and Await by @zsol in #641
• Qualified Name Provider: Fix returned qname for symbols that are prefixes of each other by @wiyr in #669
• Rename Codemod: Correct last renamed import from by @toofar in #675
• Many changes to the Apply Type Comments codemod:
  • Allow for skipping quotes when applying type comments by @stroxler in #644
  • Port pyre fixes by @stroxler in #651
  • Preserve as-imports when merging type annotations. by @martindemello in #664
  • Qualify imported symbols when the dequalified form would cause a conflict by @martindemello in #674
  • Add an argument to always qualify imported type annotations. by @martindemello in #676

Added

• Create an AddTrailingCommas codemod by @stroxler in #643
• Define gather global names visitor by @shannonzhu in #657

Updated

• Support module and package names in the codemod context by @lpetre in #662
• Drop support for running libcst using a python 3.6 interpreter by @lpetre in #663
• Update relative import logic to match cpython by @lpetre in #660
• Scope Provider: Consider access information when computing qualified names for nodes by @lpetre in #682

Full Changelog: v0.4.1...v0.4.2

LibCST 0.4.1 Release - 2022-01-28

New Contributors

• @ariebovenberg made their first contribution in #605
• @sehz made their first contribution in #598

Added

• Add docs about the native parts by @zsol in #601
• Specify minimum rust toolchain version by @zsol in #614
• build wheels on main branch for linux/arm64 by @zsol in #630

Updated

• ApplyTypeAnnotationVisitor changes
  • Add support for methods with func type comment excluding self/cls by @stroxler in #622
  • Merge in TypeVars and Generic base classes in ApplyTypeAnnotationVisitor by @martindemello in #596
  • Full handling for applying type comments to Assign by @stroxler in #599
  • Add support for For and With by @stroxler in #607
  • Support FunctionDef transformations by @stroxler in #610
• add slots to base classes, @add_slots takes bases into account by @ariebovenberg in #605
• change pyo3 as optional dependency in native Python Parser by @sehz in #598
• [native] Box most enums by @zsol in #632
• [native] Return tuples instead of lists in CST nodes by @zsol in #631

Fixed

• Allow trailing whitespace without newline at EOF by @zsol in #611
• Handle ast.parse failures when converting function type comments by @stroxler in #616
• [native] Don't redundantly nest StarredElement inside another Element by @isidentical in #624
• [native] Allow unparenthesized tuples inside f-strings by @isidentical in #621
• Don't require whitespace right after match by @isidentical in #628
• Proxy both parentheses in some pattern matching nodes by @isidentical in #626

LibCST 0.4.0 Release - 2022-01-12

This release contains a new parsing infrastructure that is turned off by default. You
can enable it by setting the LIBCST_PARSER_TYPE environment variable to native
before parsing an input with the usual LibCST APIs. Parsing Python 3.10 documents is
only supported in this new mode.

Note: the new parser is built as a native extension, so LibCST will ship with binary
wheels from now on.

Added

• Implement a Python PEG parser in Rust by @zsol in #566
• implement PEP-654: except* by @zsol in #571
• Implement PEP-634 - Match statement by @zsol in #568
• Add instructions to codegen test failures by @stroxler in #582
• Support Parenthesized With Statements by @stroxler in #584
• Support relative imports in AddImportsVisitor by @martindemello in #585
• Codemod for PEP 484 Assign w / type comments -> PEP 526 AnnAssign by @stroxler in #594

Updated

• Update license headers by @zsol in #560
• Use precise signature matching when inserting function type annotations by @martindemello in #591