Replace fields with properties

Author: woojiahao

src/git_autograder/repo/null_repo.py

@@ -8,26 +8,31 @@
 
 
 class NullGitAutograderRepo(GitAutograderRepoBase):
+    @property
     def repo(self) -> Repo:
         raise AttributeError(
             "Cannot access attribute repo on NullGitAutograderRepo. Check that your repo_type is not 'ignore'."
         )
 
+    @property
     def branches(self) -> BranchHelper:
         raise AttributeError(
             "Cannot access attribute branches on NullGitAutograderRepo. Check that your repo_type is not 'ignore'."
         )
 
+    @property
     def commits(self) -> CommitHelper:
         raise AttributeError(
             "Cannot access attribute commits on NullGitAutograderRepo. Check that your repo_type is not 'ignore'."
         )
 
+    @property
     def remotes(self) -> RemoteHelper:
         raise AttributeError(
             "Cannot access attribute remotes on NullGitAutograderRepo. Check that your repo_type is not 'ignore'."
         )
 
+    @property
     def files(self) -> FileHelper:
         raise AttributeError(
             "Cannot access attribute files on NullGitAutograderRepo. Check that your repo_type is not 'ignore'."

src/git_autograder/repo/repo.py

@@ -25,17 +25,22 @@ def __init__(
         self._remotes: RemoteHelper = RemoteHelper(self._repo)
         self._files: FileHelper = FileHelper(self._repo)
 
+    @property
     def repo(self) -> Repo:
         return self._repo
 
+    @property
     def branches(self) -> BranchHelper:
         return self._branches
 
+    @property
     def commits(self) -> CommitHelper:
         return self._commits
 
+    @property
     def remotes(self) -> RemoteHelper:
         return self._remotes
 
+    @property
     def files(self) -> FileHelper:
         return self._files

src/git_autograder/repo/repo_base.py

@@ -1,4 +1,4 @@
-from abc import ABC, abstractmethod
+from abc import ABC, abstractmethod, abstractproperty
 
 from git import Repo
 
@@ -9,17 +9,22 @@
 
 
 class GitAutograderRepoBase(ABC):
+    @property
     @abstractmethod
     def repo(self) -> Repo: ...
 
+    @property
     @abstractmethod
     def branches(self) -> BranchHelper: ...
 
+    @property
     @abstractmethod
     def commits(self) -> CommitHelper: ...
 
+    @property
     @abstractmethod
     def remotes(self) -> RemoteHelper: ...
 
+    @property
     @abstractmethod
     def files(self) -> FileHelper: ...