101 lines
3.3 KiB
JavaScript
101 lines
3.3 KiB
JavaScript
'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var hasSymbols = require('has-symbols')();
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var $TypeError = GetIntrinsic('%TypeError%');
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var IteratorPrototype = GetIntrinsic('%IteratorPrototype%', true);
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var AdvanceStringIndex = require('./AdvanceStringIndex');
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var CreateIterResultObject = require('./CreateIterResultObject');
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var CreateMethodProperty = require('./CreateMethodProperty');
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var Get = require('./Get');
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var OrdinaryObjectCreate = require('./OrdinaryObjectCreate');
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var RegExpExec = require('./RegExpExec');
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var Set = require('./Set');
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var ToLength = require('./ToLength');
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var ToString = require('./ToString');
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var Type = require('./Type');
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var SLOT = require('internal-slot');
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var setToStringTag = require('es-set-tostringtag');
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var RegExpStringIterator = function RegExpStringIterator(R, S, global, fullUnicode) {
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if (Type(S) !== 'String') {
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throw new $TypeError('`S` must be a string');
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}
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if (Type(global) !== 'Boolean') {
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throw new $TypeError('`global` must be a boolean');
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}
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if (Type(fullUnicode) !== 'Boolean') {
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throw new $TypeError('`fullUnicode` must be a boolean');
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}
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SLOT.set(this, '[[IteratingRegExp]]', R);
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SLOT.set(this, '[[IteratedString]]', S);
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SLOT.set(this, '[[Global]]', global);
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SLOT.set(this, '[[Unicode]]', fullUnicode);
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SLOT.set(this, '[[Done]]', false);
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};
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if (IteratorPrototype) {
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RegExpStringIterator.prototype = OrdinaryObjectCreate(IteratorPrototype);
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}
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var RegExpStringIteratorNext = function next() {
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var O = this; // eslint-disable-line no-invalid-this
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if (Type(O) !== 'Object') {
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throw new $TypeError('receiver must be an object');
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}
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if (
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!(O instanceof RegExpStringIterator)
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|| !SLOT.has(O, '[[IteratingRegExp]]')
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|| !SLOT.has(O, '[[IteratedString]]')
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|| !SLOT.has(O, '[[Global]]')
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|| !SLOT.has(O, '[[Unicode]]')
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|| !SLOT.has(O, '[[Done]]')
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) {
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throw new $TypeError('"this" value must be a RegExpStringIterator instance');
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}
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if (SLOT.get(O, '[[Done]]')) {
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return CreateIterResultObject(undefined, true);
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}
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var R = SLOT.get(O, '[[IteratingRegExp]]');
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var S = SLOT.get(O, '[[IteratedString]]');
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var global = SLOT.get(O, '[[Global]]');
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var fullUnicode = SLOT.get(O, '[[Unicode]]');
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var match = RegExpExec(R, S);
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if (match === null) {
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SLOT.set(O, '[[Done]]', true);
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return CreateIterResultObject(undefined, true);
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}
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if (global) {
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var matchStr = ToString(Get(match, '0'));
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if (matchStr === '') {
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var thisIndex = ToLength(Get(R, 'lastIndex'));
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var nextIndex = AdvanceStringIndex(S, thisIndex, fullUnicode);
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Set(R, 'lastIndex', nextIndex, true);
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}
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return CreateIterResultObject(match, false);
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}
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SLOT.set(O, '[[Done]]', true);
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return CreateIterResultObject(match, false);
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};
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CreateMethodProperty(RegExpStringIterator.prototype, 'next', RegExpStringIteratorNext);
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if (hasSymbols) {
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setToStringTag(RegExpStringIterator.prototype, 'RegExp String Iterator');
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if (Symbol.iterator && typeof RegExpStringIterator.prototype[Symbol.iterator] !== 'function') {
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var iteratorFn = function SymbolIterator() {
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return this;
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};
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CreateMethodProperty(RegExpStringIterator.prototype, Symbol.iterator, iteratorFn);
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}
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}
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// https://262.ecma-international.org/11.0/#sec-createregexpstringiterator
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module.exports = function CreateRegExpStringIterator(R, S, global, fullUnicode) {
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// assert R.global === global && R.unicode === fullUnicode?
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return new RegExpStringIterator(R, S, global, fullUnicode);
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};
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