progval / rust-python-parser

A Python parser written in Rust using nom

rust-python-parser

A Python parser for Rust libraries and programs.

Currently supports Python 3.8's syntax (except type comments, which are ignored like regular comments)

rust-python-parser's Issues

Support for newer versions of Python3?

Are there any plans to support newer features in Python?

In particular, I see that the parser will panic when it tries to read a type annotation like:

foo: int

foo = 22

Parse f-strings

Currently they are just parsed as regular strings with a prefix

Multiple `if` statements causes a panic

Trying to parse some code and found a problem that seems to be caused with two consecutive if statements.

Input:

if True:
    pass
if True:
    pass

Causes a panic when parsing the second statement.

Parse type comments?

Starting with python 3.8, type comments are parsed by cpython's parser. We might want to support them.

But that's a lot of work, so I'm not sure it's worth it

Fix the pretty-printer for f-string

Currently, the pretty-printer handles f-string like regular strings, which means it may output this: f"foo {d[\"bar\"]} baz", which is invalid syntax, as backslashes are not allowed between curly brackets

Panic when parsing identifiers that start with keywords

The parser is a little too greedy currently...

Input that fails:

if_foo = 3
print(if_foo)