jsonref/dist/cjs/pointer.js

Javascript References ($ref) and Pointers library

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.getPointer = getPointer;
exports.resolve = resolve;
const meta = __importStar(require("./meta.js"));
const utils_js_1 = require("./utils.js");
const PREFIX_RE = /^(0|[1-9][0-9]*?)([#]?)$/;
const INDEX_RE = /-|0|[1-9][0-9]*/;
function getPointer(obj) {
    const p = [];
    let parent, current = obj;
    while ((parent = meta.getMeta(current).parent)) {
        const frag = meta.getKey(current);
        if (!frag) {
            throw new Error(`Failed to get key for ${JSON.stringify(current)}`);
        }
        else {
            p.push('' + frag);
            current = parent;
        }
    }
    return [''].concat(p.reverse()).join('/');
}
function resolve(obj, path) {
    if (typeof obj === 'undefined') {
        throw new TypeError('Bad object');
    }
    else if (typeof path !== 'string') {
        throw new TypeError('Bad path');
    }
    else if (!path) {
        return obj;
    }
    let current = obj;
    const parts = path.split('/');
    const prefix = parts.shift();
    if (prefix) {
        if (prefix.match(meta.LII_RE)) {
            current = meta.getById(current, `#${prefix}`);
        }
        else {
            const match = prefix.match(PREFIX_RE);
            if (!match) {
                throw new SyntaxError(`Bad prefix ${prefix}`);
            }
            else {
                let levels = parseInt(match[1]);
                while (levels--) {
                    current = meta.getMeta(current).parent;
                    if (!current) {
                        throw new RangeError(`Invalid prefix "${match[1]}"`);
                    }
                }
                if (match[2]) {
                    return meta.getKey(current);
                }
            }
        }
    }
    while (parts.length) {
        if (current === null || typeof current !== 'object') {
            throw new TypeError(`Invalid type at path`);
        }
        const part = (0, utils_js_1.unescape)(parts.shift());
        if (Array.isArray(current)) {
            if (!part.match(INDEX_RE)) {
                throw new SyntaxError(`Invalid array index "${part}"`);
            }
            else if (part === '-') {
                throw new RangeError(`Index out of bounds "${part}"`);
            }
            else {
                const index = parseInt(part);
                if (index > current.length) {
                    throw new RangeError(`Index out of bounds "${part}"`);
                }
                else {
                    current = current[index];
                }
            }
        }
        else {
            current = current[part];
            if (typeof current === 'undefined') {
                throw new RangeError(`Cannot find property "${part}"`);
            }
        }
    }
    return current;
}
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