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from pypy.interpreter import baseobjspace
from pypy.interpreter.error import OperationError
from rpython.tool.error import offset2lineno
class PyTraceback(baseobjspace.W_Root):
"""Traceback object
Public app-level fields:
* 'tb_frame'
* 'tb_lasti'
* 'tb_lineno'
* 'tb_next'
"""
def __init__(self, space, frame, lasti, next):
self.space = space
self.frame = frame
self.lasti = lasti
self.next = next
def get_lineno(self):
return offset2lineno(self.frame.pycode, self.lasti)
def descr_tb_lineno(self, space):
return space.newint(self.get_lineno())
def descr__reduce__(self, space):
from pypy.interpreter.mixedmodule import MixedModule
w_mod = space.getbuiltinmodule('_pickle_support')
mod = space.interp_w(MixedModule, w_mod)
new_inst = mod.get('traceback_new')
tup_base = []
tup_state = [
self.frame,
space.newint(self.lasti),
self.next,
]
nt = space.newtuple
return nt([new_inst, nt(tup_base), nt(tup_state)])
def descr__setstate__(self, space, w_args):
from pypy.interpreter.pyframe import PyFrame
args_w = space.unpackiterable(w_args)
w_frame, w_lasti, w_next = args_w
self.frame = space.interp_w(PyFrame, w_frame)
self.lasti = space.int_w(w_lasti)
self.next = space.interp_w(PyTraceback, w_next, can_be_None=True)
def descr__dir__(self, space):
return space.newlist([space.newtext(n) for n in
['tb_frame', 'tb_next', 'tb_lasti', 'tb_lineno']])
def record_application_traceback(space, operror, frame, last_instruction):
if frame.pycode.hidden_applevel:
return
tb = operror.get_traceback()
tb = PyTraceback(space, frame, last_instruction, tb)
operror.set_traceback(tb)
def check_traceback(space, w_tb, msg):
if w_tb is None or not space.isinstance_w(w_tb, space.gettypeobject(PyTraceback.typedef)):
raise OperationError(space.w_TypeError, space.newtext(msg))
return w_tb
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