##| Copyright: (C) 2019-2020 Kevin Larke <contact AT larke DOT org> 
##| License: GNU GPL version 3.0 or above. See the accompanying LICENSE file.
import json

class Result(object):
    def __init__( self, value=None, msg=None ):
        self.value = value
        self.msg   = msg
        self.resultL = []

    def set_error( self, msg ):
        if self.msg is None:
            self.msg = ""
            
        self.msg += " " + msg

    def print(self):
        if value:
            print(value)
        if msg:
            print(msg)
            
        if resultL:
            print(resultL)

    def __bool__( self ):
        return self.msg is  None

    def __iadd__( self, b ):
        if self.value is None and self.msg is None:
            self = b
        else:
            self.resultL.append(b)

        return self