import { isMap, isPair, isScalar } from '../../nodes/identity.js'; import { Pair, createPair } from '../../nodes/Pair.js'; import { YAMLMap, findPair } from '../../nodes/YAMLMap.js'; class YAMLSet extends YAMLMap { constructor(schema) { super(schema); this.tag = YAMLSet.tag; } add(key) { let pair; if (isPair(key)) pair = key; else if (key && typeof key === 'object' && 'key' in key && 'value' in key && key.value === null) pair = new Pair(key.key, null); else pair = new Pair(key, null); const prev = findPair(this.items, pair.key); if (!prev) this.items.push(pair); } /** * If `keepPair` is `true`, returns the Pair matching `key`. * Otherwise, returns the value of that Pair's key. */ get(key, keepPair) { const pair = findPair(this.items, key); return !keepPair && isPair(pair) ? isScalar(pair.key) ? pair.key.value : pair.key : pair; } set(key, value) { if (typeof value !== 'boolean') throw new Error(`Expected boolean value for set(key, value) in a YAML set, not ${typeof value}`); const prev = findPair(this.items, key); if (prev && !value) { this.items.splice(this.items.indexOf(prev), 1); } else if (!prev && value) { this.items.push(new Pair(key)); } } toJSON(_, ctx) { return super.toJSON(_, ctx, Set); } toString(ctx, onComment, onChompKeep) { if (!ctx) return JSON.stringify(this); if (this.hasAllNullValues(true)) return super.toString(Object.assign({}, ctx, { allNullValues: true }), onComment, onChompKeep); else throw new Error('Set items must all have null values'); } static from(schema, iterable, ctx) { const { replacer } = ctx; const set = new this(schema); if (iterable && Symbol.iterator in Object(iterable)) for (let value of iterable) { if (typeof replacer === 'function') value = replacer.call(iterable, value, value); set.items.push(createPair(value, null, ctx)); } return set; } } YAMLSet.tag = 'tag:yaml.org,2002:set'; const set = { collection: 'map', identify: value => value instanceof Set, nodeClass: YAMLSet, default: false, tag: 'tag:yaml.org,2002:set', createNode: (schema, iterable, ctx) => YAMLSet.from(schema, iterable, ctx), resolve(map, onError) { if (isMap(map)) { if (map.hasAllNullValues(true)) return Object.assign(new YAMLSet(), map); else onError('Set items must all have null values'); } else onError('Expected a mapping for this tag'); return map; } }; export { YAMLSet, set };