DESIGN DOCUMENT Classes:

1. Gitlet
2. CommitTree (private, nested inside Gitlet)
3. Commit (private, nested inside Gitlet)
4. Branch (private, nested inside Gitlet) Gitlet -Instance variables:
5. CommitTree myCommitTree
6. HashSet untracking
7. HashSet staged
8. Int currentID
9. Boolean conflicted -Methods (feel the need to clean this up):
10. clearFiles – clear files from untracking and staged after a commit
11. initCommand – makes the .gitlet folder with the staging_area folder inside
12. addCommand – adds to staging area or unmarks from untracking
13. rmCommand – removes from staging or adds to the “untracking” list
14. logCommand – calls the reportInfo method of the headCommit, which invokes the -reportInfo command recursively on its parentCommit
15. findCommand – prints the ID of all commits sharing the specified message
16. statusCommand – iterate through myCommitTree.branches, staged, and untracking instance variables
17. checkoutCommand – uses the myCommitTree headCommit version of the file to overwrite the file in the current directory. OR uses the commit with the given commit id to find the version of the file used to overwrite. OR uses the commit at the head of the given branch to overwrite the files.
18. branchCommand – makes a new branch in branches; points at the same commit that the current branch is pointing to.
19. rmbranchCommand – remove a branch from the branches list
20. mergeCommand – very complicated. Need to know how to recognize a split point.Requires checking the contents of the files at the current branch and the given branch to see if they are different. If the current branch has not been modified but the given branch has, then use the given branch’s files. If the other way, leave the current branch’s files as they are. If they are both modified, then make .conflicted files.
21. rebaseCommand – requires being able to find a split point. Replay a branch, making copies of the commits in the current branch and “sticking” them onto the given branch. Propagate changes as well. -Other
22. No argument constructor: instantiates myCommitTree CommitTree CommitTree - likely to remove and move all the instance variables to gitlet -Instance variables:
23. Commit headCommit
24. HashSet branches
25. HashSet history -Methods
26. addCommit -Other
27. No argument constructor: instantiates headCommit, branches, and history Commit -Instance variables:
28. int id
29. String message
30. String time
31. Commit parent
32. HashSet tracking -Methods
33. reportInfo – reports all its relevant info for the sake of log and globallog
34. hashCode – for quicker access in history, for the sake of find Branch - likely to remove altogether -instance variables:
35. String myName
36. Commit myCommit -Methods:
37. changeCommit – changes myCommit to the commit in the argument