def from_json()

in tools/incremental_test/specification.py [0:0]

• 38 lines of code
• 9 McCabe index (conditional complexity)

    def from_json(input_json: Dict[str, Any]) -> "RepositoryState":
        try:
            kind = input_json["kind"]
            if kind == "hg":
                return HgRepositoryState(
                    repository=Path(input_json["repository"]),
                    commit_hash=input_json["commit_hash"],
                )
            elif kind == "file":
                files = input_json["files"]
                if not isinstance(files, dict):
                    raise InvalidSpecificationException(
                        "File repository must be specified as dicts"
                    )
                return FileRepositoryState(files)
            elif kind == "updated":
                base = input_json["base"]
                updates = input_json["updates"]
                if not isinstance(updates, list):
                    raise InvalidSpecificationException(
                        "Updates must be specified as lists"
                    )
                return UpdatedRepositoryState(
                    RepositoryState.from_json(base),
                    [RepositoryUpdate.from_json(update) for update in updates],
                )
            else:
                raise InvalidSpecificationException(
                    "Cannot create RepositoryState due to unrecognized kind"
                )
        except KeyError as key:
            raise InvalidSpecificationException(
                f"Cannot create RespositoryState due to missing field '{key}'"
            )
        except TypeError as error:
            raise InvalidSpecificationException(
                f"Cannot create RespositoryState due to invalid path: {error}"
            )