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import ast
import asyncio
import concurrent.futures
import inspect
import os
import site
import sys
import threading
import types
import warnings
from _colorize import can_colorize, ANSIColors # type: ignore[import-not-found]
from _pyrepl.console import InteractiveColoredConsole
from . import futures
class AsyncIOInteractiveConsole(InteractiveColoredConsole):
def __init__(self, locals, loop):
super().__init__(locals, filename="<stdin>")
self.compile.compiler.flags |= ast.PyCF_ALLOW_TOP_LEVEL_AWAIT
self.loop = loop
def runcode(self, code):
global return_code
future = concurrent.futures.Future()
def callback():
global return_code
global repl_future
global keyboard_interrupted
repl_future = None
keyboard_interrupted = False
func = types.FunctionType(code, self.locals)
try:
coro = func()
except SystemExit as se:
return_code = se.code
self.loop.stop()
return
except KeyboardInterrupt as ex:
keyboard_interrupted = True
future.set_exception(ex)
return
except BaseException as ex:
future.set_exception(ex)
return
if not inspect.iscoroutine(coro):
future.set_result(coro)
return
try:
repl_future = self.loop.create_task(coro)
futures._chain_future(repl_future, future)
except BaseException as exc:
future.set_exception(exc)
loop.call_soon_threadsafe(callback)
try:
return future.result()
except SystemExit as se:
return_code = se.code
self.loop.stop()
return
except BaseException:
if keyboard_interrupted:
self.write("\nKeyboardInterrupt\n")
else:
self.showtraceback()
class REPLThread(threading.Thread):
def run(self):
global return_code
try:
banner = (
f'asyncio REPL {sys.version} on {sys.platform}\n'
f'Use "await" directly instead of "asyncio.run()".\n'
f'Type "help", "copyright", "credits" or "license" '
f'for more information.\n'
)
console.write(banner)
if startup_path := os.getenv("PYTHONSTARTUP"):
import tokenize
with tokenize.open(startup_path) as f:
startup_code = compile(f.read(), startup_path, "exec")
exec(startup_code, console.locals)
ps1 = getattr(sys, "ps1", ">>> ")
if can_colorize():
ps1 = f"{ANSIColors.BOLD_MAGENTA}{ps1}{ANSIColors.RESET}"
console.write(f"{ps1}import asyncio\n")
try:
import errno
if os.getenv("PYTHON_BASIC_REPL"):
raise RuntimeError("user environment requested basic REPL")
if not os.isatty(sys.stdin.fileno()):
raise OSError(errno.ENOTTY, "tty required", "stdin")
# This import will fail on operating systems with no termios.
from _pyrepl.simple_interact import (
check,
run_multiline_interactive_console,
)
if err := check():
raise RuntimeError(err)
except Exception as e:
console.interact(banner="", exitmsg=exit_message)
else:
try:
run_multiline_interactive_console(console=console)
except SystemExit:
# expected via the `exit` and `quit` commands
pass
except BaseException:
# unexpected issue
console.showtraceback()
console.write("Internal error, ")
return_code = 1
finally:
warnings.filterwarnings(
'ignore',
message=r'^coroutine .* was never awaited$',
category=RuntimeWarning)
loop.call_soon_threadsafe(loop.stop)
if __name__ == '__main__':
CAN_USE_PYREPL = True
return_code = 0
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
repl_locals = {'asyncio': asyncio}
for key in {'__name__', '__package__',
'__loader__', '__spec__',
'__builtins__', '__file__'}:
repl_locals[key] = locals()[key]
console = AsyncIOInteractiveConsole(repl_locals, loop)
repl_future = None
keyboard_interrupted = False
try:
import readline # NoQA
except ImportError:
readline = None
interactive_hook = getattr(sys, "__interactivehook__", None)
if interactive_hook is not None:
interactive_hook()
if interactive_hook is site.register_readline:
# Fix the completer function to use the interactive console locals
try:
import rlcompleter
except:
pass
else:
if readline is not None:
completer = rlcompleter.Completer(console.locals)
readline.set_completer(completer.complete)
repl_thread = REPLThread(name="Interactive thread")
repl_thread.daemon = True
repl_thread.start()
while True:
try:
loop.run_forever()
except KeyboardInterrupt:
keyboard_interrupted = True
if repl_future and not repl_future.done():
repl_future.cancel()
continue
else:
break
console.write('exiting asyncio REPL...\n')
sys.exit(return_code)
|
