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