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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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// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
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// 2. Redistributions in binary form must reproduce the above copyright
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//
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// @dart = 2.9
import 'v8_regexp_utils.dart';
import 'package:expect/expect.dart';
void main() {
description("This page tests invalid character ranges in character classes.");
// These test a basic range / non range.
shouldBe(new RegExp(r"[a-c]+").firstMatch("-acbd"), ["acb"]);
shouldBe(new RegExp(r"[a\-c]+").firstMatch("-acbd"), ["-ac"]);
// A reverse-range is invalid.
assertThrows(() => new RegExp(r"[c-a]+").firstMatch("-acbd"));
// A character-class in a range is invalid, according to ECMA-262, but we allow it.
shouldBe(new RegExp(r"[\d-x]+").firstMatch("1-3xy"), ["1-3x"]);
shouldBe(new RegExp(r"[x-\d]+").firstMatch("1-3xy"), ["1-3x"]);
shouldBe(new RegExp(r"[\\d-\d]+").firstMatch("1-3xy"), ["1-3"]);
// Whilst we break with ECMA-262's definition of CharacterRange, we do comply with
// the grammar, and as such in the following regex a-z cannot be matched as a range.
shouldBe(new RegExp(r"[\d-a-z]+").firstMatch("az1-3y"), ["az1-3"]);
// An escaped hyphen should not be confused for an invalid range.
shouldBe(new RegExp(r"[\d\-x]+").firstMatch("1-3xy"), ["1-3x"]);
shouldBe(new RegExp(r"[x\-\d]+").firstMatch("1-3xy"), ["1-3x"]);
shouldBe(new RegExp(r"[\d\-\d]+").firstMatch("1-3xy"), ["1-3"]);
// A hyphen after a character-class is not invalid.
shouldBe(new RegExp(r"[\d-]+").firstMatch("1-3xy"), ["1-3"]);
}