[Feature Request]: High cyclomatic complexity leds to bad readability

[llrs-roche]

Feature description

There are some functions that are highly complex and hard to read:

                         name cyclocomp
13         extract_occurrence        30
12         extract_dependency        13
33 move_functions_after_arrow        10
30                 lang2calls         7
5                      c.qenv         6
17       fix_shifted_comments         6

It would be good to make it easier to read the extract_dependency and extract_occurrence so that it is easier to modify them and fix any error.

Code of Conduct

• I agree to follow this project's Code of Conduct.

Contribution Guidelines

• I agree to follow this project's Contribution Guidelines.

Security Policy

• I agree to follow this project's Security Policy.