locutus/esm/php/funchand/call_user_func_array.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

import { resolvePhpCallable } from "../_helpers/_callbackResolver.js";
import { getPhpGlobalEntry, getPhpObjectEntry } from "../_helpers/_phpRuntimeState.js";
import { isObjectLike, isPhpCallable, } from "../_helpers/_phpTypes.js";
export function call_user_func_array(cb, parameters) {
    //  discuss at: https://locutus.io/php/call_user_func_array/
    // original by: Thiago Mata (https://thiagomata.blog.com)
    //  revised by: Jon Hohle
    // improved by: Brett Zamir (https://brett-zamir.me)
    // improved by: Diplom@t (https://difane.com/)
    // improved by: Brett Zamir (https://brett-zamir.me)
    //      note 1: Callback resolution intentionally avoids eval/new Function for security.
    //   example 1: call_user_func_array('isNaN', ['a'])
    //   returns 1: true
    //   example 2: call_user_func_array('isNaN', [1])
    //   returns 2: false
    let func;
    let scope = null;
    try {
        const resolved = resolvePhpCallable(cb, { invalidMessage: 'invalid' });
        func = resolved.fn;
        scope = resolved.scope;
    }
    catch {
        // Fall back to legacy-compatible callback resolution paths below.
    }
    if (!func && typeof cb === 'string') {
        const globalCandidate = getPhpGlobalEntry(cb);
        if (isPhpCallable(globalCandidate)) {
            func = globalCandidate;
        }
    }
    else if (!func && Array.isArray(cb)) {
        if (typeof cb[0] === 'string') {
            const globalScope = getPhpGlobalEntry(cb[0]);
            if (isObjectLike(globalScope) || typeof globalScope === 'function') {
                const method = getPhpObjectEntry(globalScope, String(cb[1]));
                if (isPhpCallable(method)) {
                    func = method;
                }
                scope = globalScope;
            }
        }
        else if (isObjectLike(cb[0]) || typeof cb[0] === 'function') {
            const method = getPhpObjectEntry(cb[0], String(cb[1]));
            if (isPhpCallable(method)) {
                func = method;
            }
            scope = cb[0];
        }
    }
    else if (!func && isPhpCallable(cb)) {
        func = cb;
    }
    if (!func) {
        throw new Error(String(cb) + ' is not a valid function');
    }
    return func.apply(scope, parameters);
}