source: imaps-frontend/node_modules/es-abstract/2023/CreateRegExpStringIterator.js

'use strict';

var GetIntrinsic = require('get-intrinsic');
var hasSymbols = require('has-symbols')();

var $TypeError = require('es-errors/type');
var IteratorPrototype = GetIntrinsic('%IteratorPrototype%', true);

var AdvanceStringIndex = require('./AdvanceStringIndex');
var CreateIterResultObject = require('./CreateIterResultObject');
var CreateMethodProperty = require('./CreateMethodProperty');
var Get = require('./Get');
var OrdinaryObjectCreate = require('./OrdinaryObjectCreate');
var RegExpExec = require('./RegExpExec');
var Set = require('./Set');
var ToLength = require('./ToLength');
var ToString = require('./ToString');
var Type = require('./Type');

var SLOT = require('internal-slot');
var setToStringTag = require('es-set-tostringtag');

var RegExpStringIterator = function RegExpStringIterator(R, S, global, fullUnicode) {
        if (typeof S !== 'string') {
                throw new $TypeError('`S` must be a string');
        }
        if (typeof global !== 'boolean') {
                throw new $TypeError('`global` must be a boolean');
        }
        if (typeof fullUnicode !== 'boolean') {
                throw new $TypeError('`fullUnicode` must be a boolean');
        }
        SLOT.set(this, '[[IteratingRegExp]]', R);
        SLOT.set(this, '[[IteratedString]]', S);
        SLOT.set(this, '[[Global]]', global);
        SLOT.set(this, '[[Unicode]]', fullUnicode);
        SLOT.set(this, '[[Done]]', false);
};

if (IteratorPrototype) {
        RegExpStringIterator.prototype = OrdinaryObjectCreate(IteratorPrototype);
}

var RegExpStringIteratorNext = function next() {
        var O = this; // eslint-disable-line no-invalid-this
        if (Type(O) !== 'Object') {
                throw new $TypeError('receiver must be an object');
        }
        if (
                !(O instanceof RegExpStringIterator)
                || !SLOT.has(O, '[[IteratingRegExp]]')
                || !SLOT.has(O, '[[IteratedString]]')
                || !SLOT.has(O, '[[Global]]')
                || !SLOT.has(O, '[[Unicode]]')
                || !SLOT.has(O, '[[Done]]')
        ) {
                throw new $TypeError('"this" value must be a RegExpStringIterator instance');
        }
        if (SLOT.get(O, '[[Done]]')) {
                return CreateIterResultObject(undefined, true);
        }
        var R = SLOT.get(O, '[[IteratingRegExp]]');
        var S = SLOT.get(O, '[[IteratedString]]');
        var global = SLOT.get(O, '[[Global]]');
        var fullUnicode = SLOT.get(O, '[[Unicode]]');
        var match = RegExpExec(R, S);
        if (match === null) {
                SLOT.set(O, '[[Done]]', true);
                return CreateIterResultObject(undefined, true);
        }
        if (global) {
                var matchStr = ToString(Get(match, '0'));
                if (matchStr === '') {
                        var thisIndex = ToLength(Get(R, 'lastIndex'));
                        var nextIndex = AdvanceStringIndex(S, thisIndex, fullUnicode);
                        Set(R, 'lastIndex', nextIndex, true);
                }
                return CreateIterResultObject(match, false);
        }
        SLOT.set(O, '[[Done]]', true);
        return CreateIterResultObject(match, false);
};
CreateMethodProperty(RegExpStringIterator.prototype, 'next', RegExpStringIteratorNext);

if (hasSymbols) {
        setToStringTag(RegExpStringIterator.prototype, 'RegExp String Iterator');

        if (Symbol.iterator && typeof RegExpStringIterator.prototype[Symbol.iterator] !== 'function') {
                var iteratorFn = function SymbolIterator() {
                        return this;
                };
                CreateMethodProperty(RegExpStringIterator.prototype, Symbol.iterator, iteratorFn);
        }
}

// https://262.ecma-international.org/11.0/#sec-createregexpstringiterator
module.exports = function CreateRegExpStringIterator(R, S, global, fullUnicode) {
        // assert R.global === global && R.unicode === fullUnicode?
        return new RegExpStringIterator(R, S, global, fullUnicode);
};