visualstudio_py_debugger.py 文件源码

def should_break(self, thread, ex_type, ex_value, trace):
        probe_stack()
        name = get_exception_name(ex_type)
        mode = self.break_on.get(name, self.default_mode)
        break_type = BREAK_TYPE_NONE
        if mode & BREAK_MODE_ALWAYS:
            if self.is_handled(thread, ex_type, ex_value, trace):
                break_type = BREAK_TYPE_HANDLED
            else:
                break_type = BREAK_TYPE_UNHANDLED
        elif (mode & BREAK_MODE_UNHANDLED) and not self.is_handled(thread, ex_type, ex_value, trace):
            break_type = BREAK_TYPE_UNHANDLED

        if break_type:
            if issubclass(ex_type, SystemExit):
                if not BREAK_ON_SYSTEMEXIT_ZERO:
                    if ((isinstance(ex_value, int) and not ex_value) or 
                        (isinstance(ex_value, SystemExit) and not ex_value.code)):
                        break_type = BREAK_TYPE_NONE

        return break_type