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fromJSON.js

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'use strict'

let AtRule = require('./at-rule')

let Comment = require('./comment')

let Declaration = require('./declaration')

let Input = require('./input')

let PreviousMap = require('./previous-map')

let Root = require('./root')

let Rule = require('./rule')

function fromJSON(json, inputs) {

if (Array.isArray(json)) return json.map(n => fromJSON(n))

let { inputs: ownInputs, ...defaults } = json

if (ownInputs) {

inputs = []

for (let input of ownInputs) {

let inputHydrated = { ...input, __proto__: Input.prototype }

if (inputHydrated.map) {

inputHydrated.map = {

...inputHydrated.map,

__proto__: PreviousMap.prototype

}

}

inputs.push(inputHydrated)

}

}

if (defaults.nodes) {

defaults.nodes = json.nodes.map(n => fromJSON(n, inputs))

}

if (defaults.source) {

let { inputId, ...source } = defaults.source

defaults.source = source

if (inputId != null) {

defaults.source.input = inputs[inputId]

}

}

if (defaults.type === 'root') {

return new Root(defaults)

} else if (defaults.type === 'decl') {

return new Declaration(defaults)

} else if (defaults.type === 'rule') {

return new Rule(defaults)

} else if (defaults.type === 'comment') {

return new Comment(defaults)

} else if (defaults.type === 'atrule') {

return new AtRule(defaults)

} else {

throw new Error('Unknown node type: ' + json.type)

}

}

module.exports = fromJSON

fromJSON.default = fromJSON