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Dir : ~/usr/share/node_modules/yaml/browser/dist/nodes/
View File Name : Collection.js

import { createNode } from '../doc/createNode.js';
import { NodeBase, isNode, isPair, isCollection, isScalar } from './Node.js';

function collectionFromPath(schema, path, value) {
    let v = value;
    for (let i = path.length - 1; i >= 0; --i) {
        const k = path[i];
        if (typeof k === 'number' && Number.isInteger(k) && k >= 0) {
            const a = [];
            a[k] = v;
            v = a;
        }
        else {
            v = new Map([[k, v]]);
        }
    }
    return createNode(v, undefined, {
        aliasDuplicateObjects: false,
        keepUndefined: false,
        onAnchor: () => {
            throw new Error('This should not happen, please report a bug.');
        },
        schema,
        sourceObjects: new Map()
    });
}
// Type guard is intentionally a little wrong so as to be more useful,
// as it does not cover untypable empty non-string iterables (e.g. []).
const isEmptyPath = (path) => path == null ||
    (typeof path === 'object' && !!path[Symbol.iterator]().next().done);
class Collection extends NodeBase {
    constructor(type, schema) {
        super(type);
        Object.defineProperty(this, 'schema', {
            value: schema,
            configurable: true,
            enumerable: false,
            writable: true
        });
    }
    /**
     * Create a copy of this collection.
     *
     * @param schema - If defined, overwrites the original's schema
     */
    clone(schema) {
        const copy = Object.create(Object.getPrototypeOf(this), Object.getOwnPropertyDescriptors(this));
        if (schema)
            copy.schema = schema;
        copy.items = copy.items.map(it => isNode(it) || isPair(it) ? it.clone(schema) : it);
        if (this.range)
            copy.range = this.range.slice();
        return copy;
    }
    /**
     * Adds a value to the collection. For `!!map` and `!!omap` the value must
     * be a Pair instance or a `{ key, value }` object, which may not have a key
     * that already exists in the map.
     */
    addIn(path, value) {
        if (isEmptyPath(path))
            this.add(value);
        else {
            const [key, ...rest] = path;
            const node = this.get(key, true);
            if (isCollection(node))
                node.addIn(rest, value);
            else if (node === undefined && this.schema)
                this.set(key, collectionFromPath(this.schema, rest, value));
            else
                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);
        }
    }
    /**
     * Removes a value from the collection.
     * @returns `true` if the item was found and removed.
     */
    deleteIn(path) {
        const [key, ...rest] = path;
        if (rest.length === 0)
            return this.delete(key);
        const node = this.get(key, true);
        if (isCollection(node))
            return node.deleteIn(rest);
        else
            throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);
    }
    /**
     * Returns item at `key`, or `undefined` if not found. By default unwraps
     * scalar values from their surrounding node; to disable set `keepScalar` to
     * `true` (collections are always returned intact).
     */
    getIn(path, keepScalar) {
        const [key, ...rest] = path;
        const node = this.get(key, true);
        if (rest.length === 0)
            return !keepScalar && isScalar(node) ? node.value : node;
        else
            return isCollection(node) ? node.getIn(rest, keepScalar) : undefined;
    }
    hasAllNullValues(allowScalar) {
        return this.items.every(node => {
            if (!isPair(node))
                return false;
            const n = node.value;
            return (n == null ||
                (allowScalar &&
                    isScalar(n) &&
                    n.value == null &&
                    !n.commentBefore &&
                    !n.comment &&
                    !n.tag));
        });
    }
    /**
     * Checks if the collection includes a value with the key `key`.
     */
    hasIn(path) {
        const [key, ...rest] = path;
        if (rest.length === 0)
            return this.has(key);
        const node = this.get(key, true);
        return isCollection(node) ? node.hasIn(rest) : false;
    }
    /**
     * Sets a value in this collection. For `!!set`, `value` needs to be a
     * boolean to add/remove the item from the set.
     */
    setIn(path, value) {
        const [key, ...rest] = path;
        if (rest.length === 0) {
            this.set(key, value);
        }
        else {
            const node = this.get(key, true);
            if (isCollection(node))
                node.setIn(rest, value);
            else if (node === undefined && this.schema)
                this.set(key, collectionFromPath(this.schema, rest, value));
            else
                throw new Error(`Expected YAML collection at ${key}. Remaining path: ${rest}`);
        }
    }
}
Collection.maxFlowStringSingleLineLength = 60;

export { Collection, collectionFromPath, isEmptyPath };