def fake_exc_info(exc_info, filename, lineno, tb_back=None):
"""Helper for `translate_exception`."""
exc_type, exc_value, tb = exc_info
# figure the real context out
real_locals = tb.tb_frame.f_locals.copy()
ctx = real_locals.get('context')
if ctx:
locals = ctx.get_all()
else:
locals = {}
for name, value in real_locals.iteritems():
if name.startswith('l_'):
locals[name[2:]] = value
# if there is a local called __jinja_exception__, we get
# rid of it to not break the debug functionality.
locals.pop('__jinja_exception__', None)
# assamble fake globals we need
globals = {
'__name__': filename,
'__file__': filename,
'__jinja_exception__': exc_info[:2]
}
# and fake the exception
code = compile(
'\n' * (lineno - 1) + 'raise __jinja_exception__[0], ' +
'__jinja_exception__[1]', filename, 'exec')
# if it's possible, change the name of the code. This won't work
# on some python environments such as google appengine
try:
function = tb.tb_frame.f_code.co_name
if function == 'root':
location = 'top-level template code'
elif function.startswith('block_'):
location = 'block "%s"' % function[6:]
else:
location = 'template'
code = CodeType(0, code.co_nlocals, code.co_stacksize, code.co_flags,
code.co_code, code.co_consts, code.co_names,
code.co_varnames, filename, location,
code.co_firstlineno, code.co_lnotab, (), ())
except:
pass
# execute the code and catch the new traceback
try:
exec code in globals, locals
except:
exc_info = sys.exc_info()
new_tb = exc_info[2].tb_next
# now we can patch the exc info accordingly
if tb_set_next is not None:
if tb_back is not None:
tb_set_next(tb_back, new_tb)
if tb is not None:
tb_set_next(new_tb, tb.tb_next)
# return without this frame
return exc_info[:2] + (new_tb, )
def fake_exc_info(exc_info, filename, lineno, tb_back=None):
"""Helper for `translate_exception`."""
exc_type, exc_value, tb = exc_info
# figure the real context out
real_locals = tb.tb_frame.f_locals.copy()
ctx = real_locals.get('context')
if ctx:
locals = ctx.get_all()
else:
locals = {}
for name, value in real_locals.iteritems():
if name.startswith('l_'):
locals[name[2:]] = value
# if there is a local called __jinja_exception__, we get
# rid of it to not break the debug functionality.
locals.pop('__jinja_exception__', None)
# assamble fake globals we need
globals = {
'__name__': filename,
'__file__': filename,
'__jinja_exception__': exc_info[:2]
}
# and fake the exception
code = compile('\n' * (lineno - 1) + 'raise __jinja_exception__[0], ' +
'__jinja_exception__[1]', filename, 'exec')
# if it's possible, change the name of the code. This won't work
# on some python environments such as google appengine
try:
function = tb.tb_frame.f_code.co_name
if function == 'root':
location = 'top-level template code'
elif function.startswith('block_'):
location = 'block "%s"' % function[6:]
else:
location = 'template'
code = CodeType(0, code.co_nlocals, code.co_stacksize,
code.co_flags, code.co_code, code.co_consts,
code.co_names, code.co_varnames, filename,
location, code.co_firstlineno,
code.co_lnotab, (), ())
except:
pass
# execute the code and catch the new traceback
try:
exec code in globals, locals
except:
exc_info = sys.exc_info()
new_tb = exc_info[2].tb_next
# now we can patch the exc info accordingly
if tb_set_next is not None:
if tb_back is not None:
tb_set_next(tb_back, new_tb)
if tb is not None:
tb_set_next(new_tb, tb.tb_next)
# return without this frame
return exc_info[:2] + (new_tb,)
def _set_tb_next(self, next):
if tb_set_next is not None:
tb_set_next(self.tb, next and next.tb or None)
self._tb_next = next
def _set_tb_next(self, next):
if tb_set_next is not None:
tb_set_next(self.tb, next and next.tb or None)
self._tb_next = next
