mirror of https://github.com/python/cpython
116 lines
2.7 KiB
Python
116 lines
2.7 KiB
Python
import string
|
|
import sys
|
|
import traceback
|
|
|
|
|
|
try:
|
|
sys.ps1
|
|
except AttributeError:
|
|
sys.ps1 = ">>> "
|
|
try:
|
|
sys.ps2
|
|
except AttributeError:
|
|
sys.ps2 = "... "
|
|
|
|
|
|
def print_exc(limit=None, file=None):
|
|
if not file:
|
|
file = sys.stderr
|
|
# we're going to skip the outermost traceback object, we don't
|
|
# want people to see the line which excecuted their code.
|
|
tb = sys.exc_traceback
|
|
if tb:
|
|
tb = tb.tb_next
|
|
try:
|
|
sys.last_type = sys.exc_type
|
|
sys.last_value = sys.exc_value
|
|
sys.last_traceback = tb
|
|
traceback.print_exception(sys.last_type, sys.last_value,
|
|
sys.last_traceback, limit, file)
|
|
except:
|
|
print '--- hola! ---'
|
|
traceback.print_exception(sys.exc_type, sys.exc_value,
|
|
sys.exc_traceback, limit, file)
|
|
|
|
|
|
class PyInteractive:
|
|
|
|
def __init__(self):
|
|
self._pybuf = ""
|
|
|
|
def executeline(self, stuff, out = None, env = None):
|
|
if env is None:
|
|
import __main__
|
|
env = __main__.__dict__
|
|
if out:
|
|
saveerr, saveout = sys.stderr, sys.stdout
|
|
sys.stderr = sys.stdout = out
|
|
try:
|
|
if self._pybuf:
|
|
self._pybuf = self._pybuf + '\n' + stuff
|
|
else:
|
|
self._pybuf = stuff
|
|
|
|
# Compile three times: as is, with \n, and with \n\n appended.
|
|
# If it compiles as is, it's complete. If it compiles with
|
|
# one \n appended, we expect more. If it doesn't compile
|
|
# either way, we compare the error we get when compiling with
|
|
# \n or \n\n appended. If the errors are the same, the code
|
|
# is broken. But if the errors are different, we expect more.
|
|
# Not intuitive; not even guaranteed to hold in future
|
|
# releases; but this matches the compiler's behavior in Python
|
|
# 1.4 and 1.5.
|
|
err = err1 = err2 = None
|
|
code = code1 = code2 = None
|
|
|
|
# quickly get out of here when the line is 'empty' or is a comment
|
|
stripped = string.strip(self._pybuf)
|
|
if not stripped or stripped[0] == '#':
|
|
self._pybuf = ''
|
|
sys.stdout.write(sys.ps1)
|
|
sys.stdout.flush()
|
|
return
|
|
|
|
try:
|
|
code = compile(self._pybuf, "<input>", "single")
|
|
except SyntaxError, err:
|
|
pass
|
|
except:
|
|
# OverflowError. More?
|
|
print_exc()
|
|
self._pybuf = ""
|
|
sys.stdout.write(sys.ps1)
|
|
sys.stdout.flush()
|
|
return
|
|
|
|
try:
|
|
code1 = compile(self._pybuf + "\n", "<input>", "single")
|
|
except SyntaxError, err1:
|
|
pass
|
|
|
|
try:
|
|
code2 = compile(self._pybuf + "\n\n", "<input>", "single")
|
|
except SyntaxError, err2:
|
|
pass
|
|
|
|
if code:
|
|
try:
|
|
exec code in env
|
|
except:
|
|
print_exc()
|
|
self._pybuf = ""
|
|
elif code1:
|
|
pass
|
|
elif err1 == err2 or (not stuff and self._pybuf):
|
|
print_exc()
|
|
self._pybuf = ""
|
|
if self._pybuf:
|
|
sys.stdout.write(sys.ps2)
|
|
sys.stdout.flush()
|
|
else:
|
|
sys.stdout.write(sys.ps1)
|
|
sys.stdout.flush()
|
|
finally:
|
|
if out:
|
|
sys.stderr, sys.stdout = saveerr, saveout
|