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// Copyright (c) 2014, the Dart project authors. All rights reserved.
// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
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// 2. Redistributions in binary form must reproduce the above copyright
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// @dart = 2.9
import 'v8_regexp_utils.dart';
import 'package:expect/expect.dart';
void main() {
description('Test regular expression processing with alternatives.');
var s1 = "<p>content</p>";
shouldBe(firstMatch(s1, new RegExp(r"<((\\/([^>]+)>)|(([^>]+)>))")),
["<p>", "p>", null, null, "p>", "p"]);
shouldBe(firstMatch(s1, new RegExp(r"<((ABC>)|(\\/([^>]+)>)|(([^>]+)>))")),
["<p>", "p>", null, null, null, "p>", "p"]);
shouldBe(firstMatch(s1, new RegExp(r"<(a|\\/p|.+?)>")), ["<p>", "p"]);
// Force YARR to use Interpreter by using iterative parentheses
shouldBe(firstMatch(s1, new RegExp(r"<((\\/([^>]+)>)|((([^>])+)>))")),
["<p>", "p>", null, null, "p>", "p", "p"]);
shouldBe(firstMatch(s1, new RegExp(r"<((ABC>)|(\\/([^>]+)>)|((([^>])+)>))")),
["<p>", "p>", null, null, null, "p>", "p", "p"]);
shouldBe(firstMatch(s1, new RegExp(r"<(a|\\/p|(.)+?)>")), ["<p>", "p", "p"]);
// Force YARR to use Interpreter by using backreference
var s2 = "<p>p</p>";
shouldBe(firstMatch(s2, new RegExp(r"<((\\/([^>]+)>)|(([^>]+)>))\5")),
["<p>p", "p>", null, null, "p>", "p"]);
shouldBe(firstMatch(s2, new RegExp(r"<((ABC>)|(\\/([^>]+)>)|(([^>]+)>))\6")),
["<p>p", "p>", null, null, null, "p>", "p"]);
shouldBe(firstMatch(s2, new RegExp(r"<(a|\\/p|.+?)>\1")), ["<p>p", "p"]);
}