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242 lines (204 loc) 路 6.18 KB
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Copy pathprivate.js
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242 lines (204 loc) 路 6.18 KB
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/**
* @description
* This function finds array index
* used as store key through reference.
*
* @param {object} reference
* @param {object} store
*/
const getUniqueId = (reference, store)=>{
let index = -1
for(let storeItemIndex in store){
let storeItem = store[storeItemIndex]
if(storeItem['reference'] === reference){
index = storeItemIndex
break
}
}
return index
}
/**
* @description
* This function verifies that an
* instance based on the class
* prototype is used as a reference.
*
* @param {object} reference
* @param {function} originInstance
*/
const validate = (reference, originInstance)=>{
if(originInstance === null || originInstance === undefined)
return true
if(reference instanceof originInstance)
return true
let yello = String.fromCharCode(0x1b) + '[33;1m'
let reset = String.fromCharCode(0x1b) + '[39;1m'
throw new Error(`${yello}(capsulable.js:23)\n`
+ `A value different from the class prototype\n`
+ `registered in the repository was used as a reference.${reset}\n`)
}
/**
* @param {function} _instance
* @returns {Private} instance
*/
module.exports = (_instance)=>{
var store = []
var originInstance = undefined
class Private {
/**
* @param {object} reference
* @param {string} key
*/
get(reference, key){
if(key === undefined)
return undefined
validate(reference, originInstance)
let uniqueId = getUniqueId(reference, store)
if(uniqueId === -1)
return undefined
if(typeof store[uniqueId]['data'][key] === 'undefined')
return undefined
return store[uniqueId]['data'][key]
}
/**
* @param {object} reference
*/
getAll(reference){
validate(reference, originInstance)
let uniqueId = getUniqueId(reference, store)
if(uniqueId === -1)
return undefined
return store[uniqueId]
}
/**
* @param {object} reference
* @param {string} key
* @param {*} data
* @returns {boolean} isSuccess
*/
set(reference, key, data){
validate(reference, originInstance)
// Prevents storing self instance within variables.
if(data instanceof Private)
return false
let uniqueId = getUniqueId(reference, store)
if(key === undefined)
return false
if(data === undefined)
return this.remove(reference, key)
if(uniqueId !== -1){
store[uniqueId]['data'][key] = data
}else{
let storedData = {}
storedData[key] = data
store.push({
reference,
data: storedData
})
}
return true
}
/**
* @param {object} reference
* @param {string} key
* @returns {boolean} isSuccess
*/
remove(reference, key){
validate(reference, originInstance)
let uniqueId = getUniqueId(reference, store)
if(uniqueId === -1)
return false
if(key === undefined)
return false
if(typeof store[uniqueId]['data'][key] == 'undefined')
return false
delete(store[uniqueId]['data'][key])
if(Object.keys(store[uniqueId]['data']).length == 0)
this.removeAll(reference)
return true
}
/**
* @param {object} reference
* @returns {boolean} isSuccess
*/
removeAll(reference){
validate(reference, originInstance)
let uniqueId = getUniqueId(reference, store)
if(uniqueId === -1)
return false
store.splice(uniqueId, 1)
return true
}
/**
* @param {object} reference
* @param {string} key
* @returns {boolean} isExist
*/
exist(reference, key){
validate(reference, originInstance)
let uniqueId = getUniqueId(reference, store)
if(uniqueId === -1)
return false
if(key === undefined) return false
return this.get(reference, key) !== undefined
}
/**
* @description
* Registering a class prototype will cause
* an error if the reference is different from
* the class prototype when using the store.
*
* @param {function} instance
* @returns {boolean} isSuccess
*/
register(instance){
if(originInstance !== undefined) return false
originInstance = instance
return true
}
}
const _private = new Private()
if(_instance !== undefined){
class GuidedPrivate{
/**
* @param {string} key
*/
get(key){
return _private.get(_instance, key)
}
getAll(){
return _private.getAll(_instance)
}
/**
* @param {string} key
* @param {*} data
* @returns {boolean} isSuccess
*/
set(key, data){
return _private.set(_instance, key, data)
}
/**
* @param {string} key
* @returns {boolean} isSuccess
*/
remove(key){
return _private.remove(_instance, key)
}
/**
* @returns {boolean} isSuccess
*/
removeAll(){
return _private.removeAll(_instance)
}
/**
* @param {string} key
* @returns {boolean} isExist
*/
exist(key){
return _private.exist(_instance, key)
}
}
return new GuidedPrivate()
}
return _private
}