vm.py 文件源码

def get_opcode(self):
        # Based on the settings decide to show the line-by-line trace
        # Get the current line being executed
        current_lineno = self.__exec_frame.line_no_obj.line_number(self.__exec_frame.ip)

        ip = self.__exec_frame.ip
            # Update the line number only if the currently executing line has changed.
        if self.__exec_frame.line_no_obj.currently_executing_line is None or \
            self.__exec_frame.line_no_obj.currently_executing_line != current_lineno:
            self.__exec_frame.line_no_obj.currently_executing_line = current_lineno
            self.__exec_frame.line_no_obj.currently_executing_line = current_lineno

        if self.__config.show_line_execution:
            current_line = self.__exec_frame.line_no_obj.get_source_line(current_lineno)
            print("Execution Line: %s" % current_line)

        op = self.__exec_frame.program[self.__exec_frame.ip]
        ip += 1
        opmethod = "execute_%s" % dis.opname[op]

        oparg = None
        if op >= dis.HAVE_ARGUMENT:
            low = self.__exec_frame.program[ip]
            high = self.__exec_frame.program[ip + 1]
            oparg = (high << 8) | low

        return opmethod, oparg, current_lineno