Extract method candidate generation

[m-zakeri]

The problem
Currently, CodART uses JDeodorant to generate extract method candidates.
The Python implementation of JDeodorant slicing algorithms is required for CodART.

Describe the solution you'd like
JDeodorant slicing algorithm [1] can be implemented using the ANTRL listeners. The following article should be extracted from source code during static analysis:

• Control flow graph (CFG)
• Call graph
• Program dependence graph (PDG)
• Control dependency graph
• Data dependency graph
• Backward slicing
• Block-based slicing

Describe alternatives you've considered
Other extract method candidate generation algorithms can be used [2, 3].

Prerequisite
Issue #114: Removing dependency to Understand

References
[1] N. Tsantalis and A. Chatzigeorgiou, “Identification of extract method refactoring opportunities for the decomposition of methods,” J. Syst. Softw., vol. 84, no. 10, pp. 1757–1782, Oct. 2011, doi: 10.1016/j.jss.2011.05.016.
[2] S. Charalampidou, A. Ampatzoglou, A. Chatzigeorgiou, A. Gkortzis, and P. Avgeriou, “Identifying extract method refactoring opportunities based on functional relevance,” IEEE Trans. Softw. Eng., vol. 43, no. 10, pp. 954–974, Oct. 2017, doi: 10.1109/TSE.2016.2645572.
[3] J. Hubert, “Implementation of an automatic extract method refactoring,” University of Stuttgart, 2019.