Files
Jeong, YunWon 3b4c5f65dd Align compiler and AST behavior with CPython (#8138)
* Align compiler and AST behavior with CPython

Update the compiler pipeline, AST module support, and related VM compile/eval paths toward CPython 3.14 behavior.

Use upstream Ruff parser crates directly and keep RustPython-specific syntax preflight handling in the compile path.

Refresh opcode metadata, snapshots, and targeted tests for the aligned bytecode and AST behavior.

* fix

* Fix PR 8138 CI failures

* Fix match mapping wildcard scan complexity

* fixes

* Use Ruff runtime AST fields

* Minimize residual patch diff

* refactor error handling

* Remove _ast conversion context wrappers

* Clean up _ast conversion glue and compiler warning escalation

Rename the Node conversion parameter `ctx` to `vm` throughout the _ast
module.

Remove the unused compile_program, compile_program_single,
compile_block_expression, and compile_expression forwarders; compile_top
stays as the entry point.

Stash an escalated compiler SyntaxWarning so a non-SyntaxWarning category
propagates unchanged instead of being rewritten to SyntaxError, matching
PyErr_ExceptionMatches(SyntaxWarning) in compiler_warn. Drop the now-unused
CompileWarningError::into_codegen_error.

Replace the PositionalArguments two-variant enum with a struct holding a
shared range and a PositionalArgumentsKind enum.

Assisted-by: Claude

* Represent compiler flags as a CompilerFlags bitflags

Replace the loose PY_CF_*/CO_* i32 constants in compile_mode with a
CompilerFlags bitflags covering the PyCF_* flags and __future__
CO_FUTURE_* bits. The Python-visible ast.PyCF_* attribute values are
derived from it via bits(); parser input modes stay plain consts.

builtins::compile and the compile_string flag handling test flags
through CompilerFlags::contains instead of raw bit math.

Assisted-by: Claude

* Fix PR 8138 test regressions

* Fix PR 8138 CI failures

* Avoid shell interpolation in Linux deps action

* Fix review findings in compiler/AST changes

- frame.rs: compute the MATCH_CLASS class name lazily so a successful
  match no longer takes the type name lock or allocates; the
  __match_args__-not-a-tuple branch reuses it instead of recomputing.
- _ast/constant.rs: add the missing leading space to the with_recursion
  label ("maximum recursion depth exceeded during compilation").
- sys.set_int_max_str_digits: restore the "maxdigits must be 0 or larger
  than {n}" error text.
- codegen: set CO_MAXBLOCKS to 20 in both ir.rs and compile.rs.
- _ast/exception.rs: extract the duplicated excepthandler node guard
  into ensure_excepthandler_node.
- codegen: correct the validate_keywords doc comment.
- Drop redundant "CPython" qualifiers from comments added in this branch.

Assisted-by: Claude
2026-06-26 18:22:08 +09:00
..
2025-11-17 18:47:05 +09:00
2025-11-17 18:47:05 +09:00

RustPython

A Python-3 (CPython >= 3.8.0) Interpreter written in Rust.

Build Status License: MIT

WARNING: this project is still in a pre-alpha state!

Using this in a production project is inadvisable. Please only do so if you understand the risks.

Usage

Check out our online demo running on WebAssembly.

Goals

  • Full Python-3 environment entirely in Rust (not CPython bindings)
  • A clean implementation without compatibility hacks

Quick Documentation

pyEval(code, options?);

code: string: The Python code to run

options:

  • vars?: { [key: string]: any }: Variables passed to the VM that can be accessed in Python with the variable js_vars. Functions do work, and receive the Python kwargs as the this argument.
  • stdout?: "console" | ((out: string) => void) | null: A function to replace the native print function, and it will be console.log when giving undefined or "console", and it will be a dumb function when giving null.

License

This project is licensed under the MIT license.