Add bdb stubs (#3354)

stdlib/2and3/bdb.pyi

@@ -0,0 +1,94 @@
+
+from typing import Set, Dict, Iterable, Any, Callable, Tuple, Type, SupportsInt, List, Union, TypeVar, Optional, IO
+from types import FrameType, TracebackType, CodeType
+
+
+_T = TypeVar("_T")
+_TraceDispatch = Callable[[FrameType, str, Any], Any]  # TODO: Recursive type
+_ExcInfo = Tuple[Type[BaseException], BaseException, FrameType]
+
+GENERATOR_AND_COROUTINE_FLAGS: int = ...
+
+class BdbQuit(Exception): ...
+
+class Bdb:
+
+    skip: Optional[Set[str]]
+    breaks: Dict[str, List[int]]
+    fncache: Dict[str, str]
+    frame_returning: Optional[FrameType]
+    botframe: Optional[FrameType]
+    quitting: bool
+    stopframe: Optional[FrameType]
+    returnframe: Optional[FrameType]
+    stoplineno: int
+
+    def __init__(self, skip: Iterable[str] = ...) -> None: ...
+    def canonic(self, filename: str) -> str: ...
+    def reset(self) -> None: ...
+    def trace_dispatch(self, frame: FrameType, event: str, arg: Any) -> _TraceDispatch: ...
+    def dispatch_line(self, frame: FrameType) -> _TraceDispatch: ...
+    def dispatch_call(self, frame: FrameType, arg: None) -> _TraceDispatch: ...
+    def dispatch_return(self, frame: FrameType, arg: Any) -> _TraceDispatch: ...
+    def dispatch_exception(self, frame: FrameType, arg: _ExcInfo) -> _TraceDispatch: ...
+    def is_skipped_module(self, module_name: str) -> bool: ...
+    def stop_here(self, frame: FrameType) -> bool: ...
+    def break_here(self, frame: FrameType) -> bool: ...
+    def do_clear(self, arg: Any) -> None: ...
+    def break_anywhere(self, frame: FrameType) -> bool: ...
+    def user_call(self, frame: FrameType, argument_list: None) -> None: ...
+    def user_line(self, frame: FrameType) -> None: ...
+    def user_return(self, frame: FrameType, return_value: Any) -> None: ...
+    def user_exception(self, frame: FrameType, exc_info: _ExcInfo) -> None: ...
+    def set_until(self, frame: FrameType, lineno: Optional[int] = ...) -> None: ...
+    def set_step(self) -> None: ...
+    def set_next(self, frame: FrameType) -> None: ...
+    def set_return(self, frame: FrameType) -> None: ...
+    def set_trace(self, frame: Optional[FrameType] = ...) -> None: ...
+    def set_continue(self) -> None: ...
+    def set_quit(self) -> None: ...
+    def set_break(self, filename: str, lineno: int, temporary: bool = ..., cond: Optional[str] = ..., funcname: Optional[str] = ...) -> None: ...
+    def clear_break(self, filename: str, lineno: int) -> None: ...
+    def clear_bpbynumber(self, arg: SupportsInt) -> None: ...
+    def clear_all_file_breaks(self, filename: str) -> None: ...
+    def clear_all_breaks(self) -> None: ...
+    def get_bpbynumber(self, arg: SupportsInt) -> Breakpoint: ...
+    def get_break(self, filename: str, lineno: int) -> bool: ...
+    def get_breaks(self, filename: str, lineno: int) -> List[Breakpoint]: ...
+    def get_file_breaks(self, filename: str) -> List[Breakpoint]: ...
+    def get_all_breaks(self) -> List[Breakpoint]: ...
+    def get_stack(self, f: FrameType, t: TracebackType) -> Tuple[List[Tuple[FrameType, int]], int]: ...
+    def format_stack_entry(self, frame_lineno: int, lprefix: str = ...) -> str: ...
+    def run(self, cmd: Union[str, CodeType], globals: Dict[str, Any] = ..., locals: Dict[str, Any] = ...) -> None: ...
+    def runeval(self, expr: str, globals: Dict[str, Any] = ..., locals: Dict[str, Any] = ...) -> None: ...
+    def runctx(self, cmd: Union[str, CodeType], globals: Dict[str, Any], locals: Dict[str, Any]) -> None: ...
+    def runcall(self, func: Callable[[Any], _T], *args: Any, **kwds: Any) -> Optional[_T]: ...
+
+class Breakpoint:
+
+    next: int = ...
+    bplist: Dict[Tuple[str, int], List[Breakpoint]] = ...
+    bpbynumber: List[Optional[Breakpoint]] = ...
+
+    funcname: Optional[str]
+    func_first_executable_line: Optional[int]
+    file: str
+    line: int
+    temporary: bool
+    cond: Optional[str]
+    enabled: bool
+    ignore: int
+    hits: int
+    number: int
+
+    def __init__(self, file: str, line: int, temporary: bool = ..., cond: Optional[str] = ..., funcname: Optional[str] = ...) -> None: ...
+    def deleteMe(self) -> None: ...
+    def enable(self) -> None: ...
+    def disable(self) -> None: ...
+    def bpprint(self, out: Optional[IO[str]] = ...) -> None: ...
+    def bpformat(self) -> str: ...
+    def __str__(self) -> str: ...
+
+def checkfuncname(b: Breakpoint, frame: FrameType) -> bool: ...
+def effective(file: str, line: int, frame: FrameType) -> Union[Tuple[Breakpoint, bool], Tuple[None, None]]: ...
+def set_trace() -> None: ...