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Jack McCluskeyandJon Ross-Perkins
319c3caf99
Python [PEP-585](https://peps.python.org/pep-0585/) replaces a number of `typing` module types with built-in equivalents and `collections.abc` versions as of Python 3.9, with the aim of eventually removing the `typing` module versions of these classes altogether. Since the minimum required version of Python listed in the [Contribution Tools document](https://github.com/carbon-language/carbon-lang/blob/trunk/docs/project/contribution_tools.md#main-tools) is 3.9, the type hints in the various python files in the repo can be updated to this style of type hint without a need for backwards compatibility. Feel free to close if this isn't a desired change at this time! --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
C++ migration tooling
Table of contents
Overview
migrate_cpp assists in migration of C++ code to Carbon. It's currently being
assembled; more documentation will be added later.
Structure
The migrate_cpp tool uses a clang::RecursiveASTVisitor to traverse Clang's
AST and, to each node, associate replacements. Each node's replacement is a
sequence of text, or a reference to some other node that should be used to
replace it.