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KeySelector.js
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KeySelector.js
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const concatKeyFrag = (...fragList) => `@/${fragList.join('/')}`
const reduceKeySelector = (...selectorList) => selectorList.reduce((preList, selector) => {
const fragList = Array.isArray(selector) ? selector : [ selector ]
const concatList = []
preList.forEach((pre) => fragList.forEach((frag) => concatList.push(`${pre}/${frag}`)))
return concatList
}, [ '@' ])
const createMultiKeySwitch = ({ keyCount }) => {
const switchMap = { /* switchKey: value */ }
const set = (value, keySelectorListList) => keySelectorListList.forEach((keySelectorList) => {
if (keyCount !== keySelectorList.length) throw new Error(`invalid keySelectorList length: ${keySelectorList.length}, expect: ${keyCount}`)
reduceKeySelector(...keySelectorList).forEach((switchKey) => {
if (switchMap[ switchKey ]) throw new Error(`duplicate switchKey: ${switchKey}`)
switchMap[ switchKey ] = value
})
})
const get = (...keyFragList) => {
if (keyCount !== keyFragList.length) throw new Error(`invalid keyCount: ${keyFragList.length}, expect: ${keyCount}`)
return switchMap[ concatKeyFrag(...keyFragList) ]
}
const verifyFull = (...keySelectorList) => {
if (keyCount !== keySelectorList.length) throw new Error(`invalid keyCount: ${keySelectorList.length}, expect: ${keyCount}`)
const fullKeyList = reduceKeySelector(...keySelectorList)
const setKeyList = Object.keys(switchMap)
if (fullKeyList.length !== setKeyList.length) {
const unsetKeyList = fullKeyList.filter((key) => !setKeyList.includes(key))
console.warn('[verifyFull] check', { fullKeyList, setKeyList })
console.warn('[verifyFull] unsetKeyList', unsetKeyList)
throw new Error('[verifyFull] not all possible key is set')
}
}
return { set, get, verifyFull }
}
export {
concatKeyFrag,
reduceKeySelector,
createMultiKeySwitch
}