How do I match multiple lines of code?

[raffomania]

I would like to match two lines from a python codebase using FastAPI:

router = APIRouter(prefix="/user", dependencies=[Depends(get_current_user)])
tags = ["user"]

I've tried to use this command:
ast-grep run --lang python --pattern 'router = APIRouter($$$ARGS) tags = $$$TAGS'

Resulting in the following error:

Error: Cannot parse query as a valid pattern.
Help: The pattern either fails to parse or contains error. Please refer to pattern syntax guide.
See also: https://ast-grep.github.io/guide/pattern-syntax.html

✖ Caused by
╰▻ Multiple AST nodes are detected. Please check the pattern source `router = APIRouter($$$ARGS) tags = $$$TAGS`.

In the playground, using the following pattern:

router = APIRouter($$$ARGS)
tags = $$$TAGS

can be parsed, but it doesn't match the code above. What is the correct syntax for matching newlines and/or whitespace?

[HerringtonDarkholme]

Hi, thanks for giving ast-grep a try.

It is not possible to match two nodes at one time now.

Alternatively, you can try relational rule https://ast-grep.github.io/guide/rule-config/relational-rule.html

[raffomania]

Thanks for clarifying!