py-ast-rule-engine
This library provides a DSL (domain-specific language) to match a pattern inside a Python AST (abstract syntax tree).
The library is currently at a draft stage: it sorta works.
Why would you use this (in theory)?
- You want to write a plugin for
flake8(or other linter) - You want to write an AST optimizer
- You want to search for a pattern in a big codebase
- You want to search and replace a pattern (WIP)
Brief example
str-format:
is(Call):
func:
is(Attribute):
value:
is(Constant):
value:
=str
attr:
="format"
f-string:
is(JoinedStr)
Assert-With-Format:
is(Assert):
test:
~str-format
Assert-With-F-String:
is(Assert):
test:
~f-string
Concatenating-2-F-Strings:
is(BinOp):
left:
~f-string
right:
~f-string
op:
is(Add)
Concatenating-F-Strings:
is(BinOp):
left:
:or:
- ~f-string
- ~Concatenating-F-Strings
right:
:or:
- ~f-string
- ~Concatenating-F-Strings
op:
is(Add)
130 Dec 26, 2022
161 Dec 31, 2022
1.8k Dec 28, 2022
72 Dec 16, 2022
3 Feb 15, 2022
249 Jan 03, 2023
10 Oct 03, 2022
36 Oct 19, 2022
8 Dec 27, 2022
15 Dec 22, 2022
29 Dec 07, 2022
4 Oct 19, 2021
79 Jan 06, 2023
14 Dec 18, 2022
71 Dec 04, 2022
253 Dec 21, 2022
4 Nov 30, 2022
6 Sep 27, 2022
1.6k Dec 30, 2022
38 Dec 29, 2022