def commit(self, branch_name, changes, msg):
"""Commit the given changes to the given branch_name"""
old_commit = self.checkout_branch(branch_name)
for change in changes:
old_commit.schema.verify(change)
new_commit = Commit()
new_commit.msg = msg
new_commit.parent = old_commit
new_commit.schema = copy.deepcopy(old_commit.schema)
for change in changes:
change = new_commit.schema.make_change_reversible(change)
change_id = hashlib.sha1(json.dumps(change)).hexdigest()
self.changes[change_id] = change
new_commit.schema.add(change)
new_commit.changelog.append(change_id)
new_commit_dict = new_commit.to_dict()
new_commit_id = hashlib.sha1(json.dumps(new_commit_dict)).hexdigest()
self.commits[new_commit_id] = new_commit_dict
self.branches[branch_name] = new_commit_id
