RustPython parser as a library

This project is forked from RustPython project. The parser is one of the core part of RustPython and Ruff project.

We try to keep these crates as a well-packaged library for more potential users.

Projects

• RustPython is a Python interpreter
• Ruff is an extremely fast Python linter
• Pylyzer is a static code analyzer / language server for Python
• Baembal is a Python package to accelerate ast.parse

lib.rs:

Python AST node definitions and utilities.

AST nodes are very similary defined like Python AST. But a few exceptions exist due to parser optimization. They can be transformed to matching Python-styled AST in reasonable cost.

[PythonArguments] is replaced by [Arguments]. The new [Arguments] type representation uses a new type [ArgWithDefault] to represent arguments with default values. See each type documentation for more details.

A few top-level sum types are renamed to human friendly names. [CmpOp] refers cmpop [UnaryOp] refers unaryop [BoolOp] refers boolop [WithItem] refers withitem [ExceptHandler] refers excepthandler