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import { stringifyCollection } from '../stringify/stringifyCollection.js';
import { Collection } from './Collection.js';
import { SEQ, isScalar } from './Node.js';
import { isScalarValue } from './Scalar.js';
import { toJS } from './toJS.js';
class YAMLSeq extends Collection {
constructor(schema) {
super(SEQ, schema);
this.items = [];
}
static get tagName() {
return 'tag:yaml.org,2002:seq';
}
add(value) {
this.items.push(value);
}
/**
* Removes a value from the collection.
*
* `key` must contain a representation of an integer for this to succeed.
* It may be wrapped in a `Scalar`.
*
* @returns `true` if the item was found and removed.
*/
delete(key) {
const idx = asItemIndex(key);
if (typeof idx !== 'number')
return false;
const del = this.items.splice(idx, 1);
return del.length > 0;
}
get(key, keepScalar) {
const idx = asItemIndex(key);
if (typeof idx !== 'number')
return undefined;
const it = this.items[idx];
return !keepScalar && isScalar(it) ? it.value : it;
}
/**
* Checks if the collection includes a value with the key `key`.
*
* `key` must contain a representation of an integer for this to succeed.
* It may be wrapped in a `Scalar`.
*/
has(key) {
const idx = asItemIndex(key);
return typeof idx === 'number' && idx < this.items.length;
}
/**
* Sets a value in this collection. For `!!set`, `value` needs to be a
* boolean to add/remove the item from the set.
*
* If `key` does not contain a representation of an integer, this will throw.
* It may be wrapped in a `Scalar`.
*/
set(key, value) {
const idx = asItemIndex(key);
if (typeof idx !== 'number')
throw new Error(`Expected a valid index, not ${key}.`);
const prev = this.items[idx];
if (isScalar(prev) && isScalarValue(value))
prev.value = value;
else
this.items[idx] = value;
}
toJSON(_, ctx) {
const seq = [];
if (ctx?.onCreate)
ctx.onCreate(seq);
let i = 0;
for (const item of this.items)
seq.push(toJS(item, String(i++), ctx));
return seq;
}
toString(ctx, onComment, onChompKeep) {
if (!ctx)
return JSON.stringify(this);
return stringifyCollection(this, ctx, {
blockItemPrefix: '- ',
flowChars: { start: '[', end: ']' },
itemIndent: (ctx.indent || '') + ' ',
onChompKeep,
onComment
});
}
}
function asItemIndex(key) {
let idx = isScalar(key) ? key.value : key;
if (idx && typeof idx === 'string')
idx = Number(idx);
return typeof idx === 'number' && Number.isInteger(idx) && idx >= 0
? idx
: null;
}
export { YAMLSeq };
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