jit.py 文件源码

def serialize(self, attr_name, field_symbol,
                  assignment_template, field_obj):
        # type: (str, str, str, fields.Field) -> IndentedString
        body = IndentedString()
        if self.context.is_serializing:
            default_str = 'default'
            default_value = field_obj.default
        else:
            default_str = 'missing'
            default_value = field_obj.missing
            if field_obj.required:
                body += assignment_template.format('obj["{attr_name}"]'.format(
                    attr_name=attr_name))
                return body
        if default_value == missing:
            body += 'if "{attr_name}" in obj:'.format(attr_name=attr_name)
            with body.indent():
                body += assignment_template.format('obj["{attr_name}"]'.format(
                    attr_name=attr_name))
        else:
            if callable(default_value):
                default_str += '()'

            body += assignment_template.format(
                'obj.get("{attr_name}", {field_symbol}__{default_str})'.format(
                    attr_name=attr_name, field_symbol=field_symbol,
                    default_str=default_str))
        return body