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'use strict';
var GetIntrinsic = require('get-intrinsic');
var hasSymbols = require('has-symbols')();
var $TypeError = require('es-errors/type');
var isObject = require('es-object-atoms/isObject');
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 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;
if (!isObject(O)) {
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);
};