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55 lines
1.5 KiB
55 lines
1.5 KiB
3 years ago
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'use strict'
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let Declaration = require('./declaration')
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let PreviousMap = require('./previous-map')
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let Comment = require('./comment')
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let AtRule = require('./at-rule')
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let Input = require('./input')
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let Root = require('./root')
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let Rule = require('./rule')
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function fromJSON(json, inputs) {
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if (Array.isArray(json)) return json.map(n => fromJSON(n))
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let { inputs: ownInputs, ...defaults } = json
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if (ownInputs) {
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inputs = []
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for (let input of ownInputs) {
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let inputHydrated = { ...input, __proto__: Input.prototype }
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if (inputHydrated.map) {
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inputHydrated.map = {
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...inputHydrated.map,
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__proto__: PreviousMap.prototype
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}
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}
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inputs.push(inputHydrated)
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}
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}
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if (defaults.nodes) {
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defaults.nodes = json.nodes.map(n => fromJSON(n, inputs))
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}
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if (defaults.source) {
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let { inputId, ...source } = defaults.source
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defaults.source = source
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if (inputId != null) {
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defaults.source.input = inputs[inputId]
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}
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}
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if (defaults.type === 'root') {
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return new Root(defaults)
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} else if (defaults.type === 'decl') {
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return new Declaration(defaults)
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} else if (defaults.type === 'rule') {
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return new Rule(defaults)
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} else if (defaults.type === 'comment') {
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return new Comment(defaults)
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} else if (defaults.type === 'atrule') {
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return new AtRule(defaults)
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} else {
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throw new Error('Unknown node type: ' + json.type)
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}
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}
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module.exports = fromJSON
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fromJSON.default = fromJSON
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