require 'class'

dict = class("dict")

function dict:__init__(t)
    self.value = t or {}
    end
    
function dict:__eq(value)
    if #self.value == 0 and #value.value == 0 then
        return true
        end
        
    return self.value == value.value
    end
    
function dict:exist(key)
    print("dict:exist", key.value)
    for dict_key, dict_value in pairs(self.value) do
        if dict_key == key.value then 
            return true 
            end 
        end 

    return false 
    end     
    
function dict:__getattr__(key)
    return self.value[key]
    end        
        
function dict:__setattr__(key, value)
    self.value[key] = value
    end
    
function dict:pop(key, ...)
    if self.exist(key) == true then
        local v = self.value[key]
   
        self.value[key] = nil
    
        return v
    else
        return ...
        end
    end
    
function dict:iteritems()
    local function _ipairs(t, var)
        var = var + 1
        local value = t[var]
        
        if value == nil then 
            return 
            end
        
        return var, value
        end
        
    return _ipairs, self.value, 0
    end

function dict:__pairs()
    return pairs(self.value)
    end