| ; | |
| var stringifyCollection = require('../stringify/stringifyCollection.js'); | |
| var addPairToJSMap = require('./addPairToJSMap.js'); | |
| var Collection = require('./Collection.js'); | |
| var identity = require('./identity.js'); | |
| var Pair = require('./Pair.js'); | |
| var Scalar = require('./Scalar.js'); | |
| function findPair(items, key) { | |
| const k = identity.isScalar(key) ? key.value : key; | |
| for (const it of items) { | |
| if (identity.isPair(it)) { | |
| if (it.key === key || it.key === k) | |
| return it; | |
| if (identity.isScalar(it.key) && it.key.value === k) | |
| return it; | |
| } | |
| } | |
| return undefined; | |
| } | |
| class YAMLMap extends Collection.Collection { | |
| static get tagName() { | |
| return 'tag:yaml.org,2002:map'; | |
| } | |
| constructor(schema) { | |
| super(identity.MAP, schema); | |
| this.items = []; | |
| } | |
| /** | |
| * A generic collection parsing method that can be extended | |
| * to other node classes that inherit from YAMLMap | |
| */ | |
| static from(schema, obj, ctx) { | |
| const { keepUndefined, replacer } = ctx; | |
| const map = new this(schema); | |
| const add = (key, value) => { | |
| if (typeof replacer === 'function') | |
| value = replacer.call(obj, key, value); | |
| else if (Array.isArray(replacer) && !replacer.includes(key)) | |
| return; | |
| if (value !== undefined || keepUndefined) | |
| map.items.push(Pair.createPair(key, value, ctx)); | |
| }; | |
| if (obj instanceof Map) { | |
| for (const [key, value] of obj) | |
| add(key, value); | |
| } | |
| else if (obj && typeof obj === 'object') { | |
| for (const key of Object.keys(obj)) | |
| add(key, obj[key]); | |
| } | |
| if (typeof schema.sortMapEntries === 'function') { | |
| map.items.sort(schema.sortMapEntries); | |
| } | |
| return map; | |
| } | |
| /** | |
| * Adds a value to the collection. | |
| * | |
| * @param overwrite - If not set `true`, using a key that is already in the | |
| * collection will throw. Otherwise, overwrites the previous value. | |
| */ | |
| add(pair, overwrite) { | |
| let _pair; | |
| if (identity.isPair(pair)) | |
| _pair = pair; | |
| else if (!pair || typeof pair !== 'object' || !('key' in pair)) { | |
| // In TypeScript, this never happens. | |
| _pair = new Pair.Pair(pair, pair?.value); | |
| } | |
| else | |
| _pair = new Pair.Pair(pair.key, pair.value); | |
| const prev = findPair(this.items, _pair.key); | |
| const sortEntries = this.schema?.sortMapEntries; | |
| if (prev) { | |
| if (!overwrite) | |
| throw new Error(`Key ${_pair.key} already set`); | |
| // For scalars, keep the old node & its comments and anchors | |
| if (identity.isScalar(prev.value) && Scalar.isScalarValue(_pair.value)) | |
| prev.value.value = _pair.value; | |
| else | |
| prev.value = _pair.value; | |
| } | |
| else if (sortEntries) { | |
| const i = this.items.findIndex(item => sortEntries(_pair, item) < 0); | |
| if (i === -1) | |
| this.items.push(_pair); | |
| else | |
| this.items.splice(i, 0, _pair); | |
| } | |
| else { | |
| this.items.push(_pair); | |
| } | |
| } | |
| delete(key) { | |
| const it = findPair(this.items, key); | |
| if (!it) | |
| return false; | |
| const del = this.items.splice(this.items.indexOf(it), 1); | |
| return del.length > 0; | |
| } | |
| get(key, keepScalar) { | |
| const it = findPair(this.items, key); | |
| const node = it?.value; | |
| return (!keepScalar && identity.isScalar(node) ? node.value : node) ?? undefined; | |
| } | |
| has(key) { | |
| return !!findPair(this.items, key); | |
| } | |
| set(key, value) { | |
| this.add(new Pair.Pair(key, value), true); | |
| } | |
| /** | |
| * @param ctx - Conversion context, originally set in Document#toJS() | |
| * @param {Class} Type - If set, forces the returned collection type | |
| * @returns Instance of Type, Map, or Object | |
| */ | |
| toJSON(_, ctx, Type) { | |
| const map = Type ? new Type() : ctx?.mapAsMap ? new Map() : {}; | |
| if (ctx?.onCreate) | |
| ctx.onCreate(map); | |
| for (const item of this.items) | |
| addPairToJSMap.addPairToJSMap(ctx, map, item); | |
| return map; | |
| } | |
| toString(ctx, onComment, onChompKeep) { | |
| if (!ctx) | |
| return JSON.stringify(this); | |
| for (const item of this.items) { | |
| if (!identity.isPair(item)) | |
| throw new Error(`Map items must all be pairs; found ${JSON.stringify(item)} instead`); | |
| } | |
| if (!ctx.allNullValues && this.hasAllNullValues(false)) | |
| ctx = Object.assign({}, ctx, { allNullValues: true }); | |
| return stringifyCollection.stringifyCollection(this, ctx, { | |
| blockItemPrefix: '', | |
| flowChars: { start: '{', end: '}' }, | |
| itemIndent: ctx.indent || '', | |
| onChompKeep, | |
| onComment | |
| }); | |
| } | |
| } | |
| exports.YAMLMap = YAMLMap; | |
| exports.findPair = findPair; | |
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