| 9 | let Rule = require('./rule') |
| 10 | |
| 11 | function fromJSON(json, inputs) { |
| 12 | if (Array.isArray(json)) return json.map(n => fromJSON(n)) |
| 13 | |
| 14 | let { inputs: ownInputs, ...defaults } = json |
| 15 | if (ownInputs) { |
| 16 | inputs = [] |
| 17 | for (let input of ownInputs) { |
| 18 | let inputHydrated = { ...input, __proto__: Input.prototype } |
| 19 | if (inputHydrated.map) { |
| 20 | inputHydrated.map = { |
| 21 | ...inputHydrated.map, |
| 22 | __proto__: PreviousMap.prototype |
| 23 | } |
| 24 | } |
| 25 | inputs.push(inputHydrated) |
| 26 | } |
| 27 | } |
| 28 | // Rehydrate children separately and attach them after construction. |
| 29 | // Passing them through the container constructor would re-run insertion |
| 30 | // spacing normalization and overwrite each child's own `raws.before`. |
| 31 | let nodes |
| 32 | if (defaults.nodes) { |
| 33 | nodes = json.nodes.map(n => fromJSON(n, inputs)) |
| 34 | delete defaults.nodes |
| 35 | } |
| 36 | if (defaults.source) { |
| 37 | let { inputId, ...source } = defaults.source |
| 38 | defaults.source = source |
| 39 | if (inputId != null) { |
| 40 | defaults.source.input = inputs[inputId] |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | let node |
| 45 | if (defaults.type === 'root') { |
| 46 | node = new Root(defaults) |
| 47 | } else if (defaults.type === 'decl') { |
| 48 | node = new Declaration(defaults) |
| 49 | } else if (defaults.type === 'rule') { |
| 50 | node = new Rule(defaults) |
| 51 | } else if (defaults.type === 'comment') { |
| 52 | node = new Comment(defaults) |
| 53 | } else if (defaults.type === 'atrule') { |
| 54 | node = new AtRule(defaults) |
| 55 | } else { |
| 56 | throw new Error('Unknown node type: ' + json.type) |
| 57 | } |
| 58 | |
| 59 | if (nodes) { |
| 60 | node.nodes = nodes |
| 61 | for (let child of nodes) child.parent = node |
| 62 | } |
| 63 | |
| 64 | return node |
| 65 | } |
| 66 | |
| 67 | module.exports = fromJSON |
| 68 | fromJSON.default = fromJSON |