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// Copyright 2008 the V8 project authors. All rights reserved.
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import 'v8_regexp_utils.dart';
import 'package:expect/expect.dart';

void main() {
  // UC16
  // Characters used:
  // "\u03a3\u03c2\u03c3\u039b\u03bb" - Sigma, final sigma, sigma, Lambda, lamda
  shouldBe(new RegExp(r"x(.)\1x", caseSensitive: false).firstMatch("x\u03a3\u03c3x"),
      ["x\u03a3\u03c3x", "\u03a3"], "backref-UC16");
  assertFalse(new RegExp(r"x(...)\1", caseSensitive: false).hasMatch("x\u03a3\u03c2\u03c3\u03c2\u03c3"),
              "\1 ASCII, string short");
  assertTrue(new RegExp(r"\u03a3((?:))\1\1x", caseSensitive: false).hasMatch("\u03c2x"), "backref-UC16-empty");
  assertTrue(new RegExp(r"x(?:...|(...))\1x", caseSensitive: false).hasMatch("x\u03a3\u03c2\u03c3x"),
            "backref-UC16-uncaptured");
  assertTrue(new RegExp(r"x(?:...|(...))\1x", caseSensitive: false).hasMatch("x\u03c2\u03c3\u039b\u03a3\u03c2\u03bbx"),
            "backref-UC16-backtrack");
  var longUC16String = "x\u03a3\u03c2\u039b\u03c2\u03c3\u03bb\u03c3\u03a3\u03bb";
  shouldBe(new RegExp(r"x(...)\1\1", caseSensitive: false).firstMatch(longUC16String),
          [longUC16String, longUC16String.substring(1,4)],
          "backref-UC16-twice");

  assertFalse(new RegExp(r"\xc1", caseSensitive: false).hasMatch('fooA'), "quickcheck-uc16-pattern-ascii-subject");
  assertFalse(new RegExp(r"[\xe9]").hasMatch('i'), "charclass-uc16-pattern-ascii-subject");
  assertFalse(new RegExp(r"\u5e74|\u6708").hasMatch('t'), "alternation-uc16-pattern-ascii-subject");
}