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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Text.RegularExpressions;
using Xunit;
namespace Microsoft.CodeAnalysis.CSharp.UnitTests.EmbeddedLanguages.RegularExpressions;
// These tests came from tests found at:
// https://github.com/dotnet/corefx/blob/main/src/System.Text.RegularExpressions/tests/
public sealed partial class CSharpRegexParserTests
{
[Fact]
public void NegativeTest0()
{
Test("""
@"cat([a-\d]*)dog"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>a</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>d</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "d")}" Span="[17..19)" Text="\d" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="cat([a-\d]*)dog" />
<Capture Name="1" Span="[13..22)" Text="([a-\d]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest1()
{
Test("""
@"\k<1"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken><1</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Unrecognized_escape_sequence_0, "k")}" Span="[11..12)" Text="k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="\k<1" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest2()
{
Test("""
@"\k<"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken><</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_named_back_reference.Replace("<", "<").Replace(">", ">")}" Span="[10..12)" Text="\k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\k<" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest3()
{
Test("""
@"\k"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_named_back_reference.Replace("<", "<").Replace(">", ">")}" Span="[10..12)" Text="\k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="\k" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest4()
{
Test("""
@"\1"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<BackreferenceEscape>
<BackslashToken>\</BackslashToken>
<NumberToken value="1">1</NumberToken>
</BackreferenceEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_number_0, "1")}" Span="[11..12)" Text="1" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="\1" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest5()
{
Test("""
@"(?')"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<CaptureNameToken />
<SingleQuoteToken />
<Sequence />
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[13..14)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(?')" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest6()
{
Test("""
@"(?<)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken />
<GreaterThanToken />
<Sequence />
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[13..14)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(?<)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest7()
{
Test("""
@"(?)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[11..12)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest8()
{
Test("""
@"(?>"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<AtomicGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence />
<CloseParenToken />
</AtomicGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?>" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest9()
{
Test("""
@"(?<!"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<NegativeLookbehindGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<ExclamationToken>!</ExclamationToken>
<Sequence />
<CloseParenToken />
</NegativeLookbehindGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[14..14)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(?<!" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest10()
{
Test("""
@"(?<="
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<PositiveLookbehindGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<EqualsToken>=</EqualsToken>
<Sequence />
<CloseParenToken />
</PositiveLookbehindGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[14..14)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(?<=" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest11()
{
Test("""
@"(?!"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<NegativeLookaheadGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<ExclamationToken>!</ExclamationToken>
<Sequence />
<CloseParenToken />
</NegativeLookaheadGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?!" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest12()
{
Test("""
@"(?="
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<PositiveLookaheadGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<EqualsToken>=</EqualsToken>
<Sequence />
<CloseParenToken />
</PositiveLookaheadGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?=" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest13()
{
Test("""
@"(?imn )"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleOptionsGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<OptionsToken>imn</OptionsToken>
<CloseParenToken />
</SimpleOptionsGrouping>
<Text>
<TextToken> </TextToken>
</Text>
<Text>
<TextToken>)</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
<Diagnostic Message="{FeaturesResources.Too_many_close_parens}" Span="[16..17)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?imn )" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest14()
{
Test("""
@"(?imn"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleOptionsGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<OptionsToken>imn</OptionsToken>
<CloseParenToken />
</SimpleOptionsGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..15)" Text="(?imn" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest15()
{
Test("""
@"(?:"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<NonCapturingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<ColonToken>:</ColonToken>
<Sequence />
<CloseParenToken />
</NonCapturingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?:" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest16()
{
Test("""
@"(?'cat'"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<SingleQuoteToken>'</SingleQuoteToken>
<Sequence />
<CloseParenToken />
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[17..17)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?'cat'" />
<Capture Name="1" Span="[10..17)" Text="(?'cat'" />
<Capture Name="cat" Span="[10..17)" Text="(?'cat'" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest17()
{
Test("""
@"(?'"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<CaptureNameToken />
<SingleQuoteToken />
<Sequence />
<CloseParenToken />
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..13)" Text="(?'" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?'" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest18()
{
Test("""
@"[^"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<NegatedCharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<CaretToken>^</CaretToken>
<Sequence />
<CloseBracketToken />
</NegatedCharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[12..12)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="[^" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest19()
{
Test("""
@"[cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[14..14)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="[cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest20()
{
Test("""
@"[^cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<NegatedCharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<CaretToken>^</CaretToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</NegatedCharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[15..15)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..15)" Text="[^cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest21()
{
Test("""
@"[a-"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>a</TextToken>
</Text>
<MinusToken>-</MinusToken>
<Text>
<TextToken />
</Text>
</CharacterClassRange>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="[a-" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest22()
{
Test("""
@"\p{"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>{</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[10..12)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\p{" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest23()
{
Test("""
@"\p{cat"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>{cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[10..12)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="\p{cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest24()
{
Test("""
@"\k<cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken><cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Unrecognized_escape_sequence_0, "k")}" Span="[11..12)" Text="k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="\k<cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest25()
{
Test("""
@"\p{cat}"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>cat</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Unknown_property_0, "cat")}}" Span="[13..16)" Text="cat" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="\p{cat}" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest26()
{
Test("""
@"\P{cat"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
</SimpleEscape>
<Text>
<TextToken>{cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[10..12)" Text="\P" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="\P{cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest27()
{
Test("""
@"\P{cat}"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>cat</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Unknown_property_0, "cat")}}" Span="[13..16)" Text="cat" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="\P{cat}" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest28()
{
Test("""
@"("
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence />
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[11..11)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..11)" Text="(" />
<Capture Name="1" Span="[10..11)" Text="(" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest29()
{
Test("""
@"(?"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[11..12)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[12..12)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="(?" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest30()
{
Test("""
@"(?<"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken />
<GreaterThanToken />
<Sequence />
<CloseParenToken />
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..13)" Text="(?<" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?<" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest31()
{
Test("""
@"(?<cat>"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence />
<CloseParenToken />
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[17..17)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?<cat>" />
<Capture Name="1" Span="[10..17)" Text="(?<cat>" />
<Capture Name="cat" Span="[10..17)" Text="(?<cat>" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest32()
{
Test("""
@"\P{"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
</SimpleEscape>
<Text>
<TextToken>{</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[10..12)" Text="\P" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\P{" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest33()
{
Test("""
@"\k<>"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken><></TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Unrecognized_escape_sequence_0, "k")}" Span="[11..12)" Text="k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="\k<>" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest34()
{
Test("""
@"(?("
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence />
<CloseParenToken />
</SimpleGrouping>
<Sequence />
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?(" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest35()
{
Test("""
@"(?()|"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Alternation>
<Sequence />
<BarToken>|</BarToken>
<Sequence />
</Alternation>
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[15..15)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..15)" Text="(?()|" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest36()
{
Test("""
@"?(a|b)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Alternation>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<BarToken>|</BarToken>
<Sequence>
<Text>
<TextToken>b</TextToken>
</Text>
</Sequence>
</Alternation>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="?(a|b)" />
<Capture Name="1" Span="[11..16)" Text="(a|b)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest37()
{
Test("""
@"?((a)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[15..15)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..15)" Text="?((a)" />
<Capture Name="1" Span="[11..15)" Text="((a)" />
<Capture Name="2" Span="[12..15)" Text="(a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest38()
{
Test("""
@"?((a)a"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[16..16)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="?((a)a" />
<Capture Name="1" Span="[11..16)" Text="((a)a" />
<Capture Name="2" Span="[12..15)" Text="(a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest39()
{
Test("""
@"?((a)a|"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Alternation>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<BarToken>|</BarToken>
<Sequence />
</Alternation>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[17..17)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="?((a)a|" />
<Capture Name="1" Span="[11..17)" Text="((a)a|" />
<Capture Name="2" Span="[12..15)" Text="(a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest40()
{
Test("""
@"?((a)a|b"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Alternation>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<BarToken>|</BarToken>
<Sequence>
<Text>
<TextToken>b</TextToken>
</Text>
</Sequence>
</Alternation>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[18..18)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..18)" Text="?((a)a|b" />
<Capture Name="1" Span="[11..18)" Text="((a)a|b" />
<Capture Name="2" Span="[12..15)" Text="(a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest41()
{
Test("""
@"(?(?i))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>i</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?i))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest42()
{
Test("""
@"?(a)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="?(a)" />
<Capture Name="1" Span="[11..14)" Text="(a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest43()
{
Test("""
@"(?(?I))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>I</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?I))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest44()
{
Test("""
@"(?(?M))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>M</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?M))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest45()
{
Test("""
@"(?(?s))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>s</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?s))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest46()
{
Test("""
@"(?(?S))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>S</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?S))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest47()
{
Test("""
@"(?(?x))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>x</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?x))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest48()
{
Test("""
@"(?(?X))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>X</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?X))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest49()
{
Test("""
@"(?(?n))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>n</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?n))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest50()
{
Test("""
@"(?(?m))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>m</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?m))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest51()
{
Test("""
@"[a"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[12..12)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="[a" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest52()
{
Test("""
@"?(a:b)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>a:b</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[10..11)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="?(a:b)" />
<Capture Name="1" Span="[11..16)" Text="(a:b)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest53()
{
Test("""
@"(?(?"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
<Sequence />
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[12..13)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[13..14)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[14..14)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(?(?" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest54()
{
Test("""
@"(?(cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
<Sequence />
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[16..16)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="(?(cat" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest55()
{
Test("""
@"(?(cat)|"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Alternation>
<Sequence />
<BarToken>|</BarToken>
<Sequence />
</Alternation>
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[18..18)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..18)" Text="(?(cat)|" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest56()
{
Test("""
@"foo(?<0>bar)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>foo</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="0">0</NumberToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>bar</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Capture_number_cannot_be_zero}" Span="[16..17)" Text="0" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="foo(?<0>bar)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest57()
{
Test("""
@"foo(?'0'bar)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>foo</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<NumberToken value="0">0</NumberToken>
<SingleQuoteToken>'</SingleQuoteToken>
<Sequence>
<Text>
<TextToken>bar</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Capture_number_cannot_be_zero}" Span="[16..17)" Text="0" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="foo(?'0'bar)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest58()
{
Test("""
@"foo(?<1bar)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>foo</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="1">1</NumberToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken>bar</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[17..18)" Text="b" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="foo(?<1bar)" />
<Capture Name="1" Span="[13..21)" Text="(?<1bar)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest59()
{
Test("""
@"foo(?'1bar)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>foo</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<NumberToken value="1">1</NumberToken>
<SingleQuoteToken />
<Sequence>
<Text>
<TextToken>bar</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[17..18)" Text="b" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="foo(?'1bar)" />
<Capture Name="1" Span="[13..21)" Text="(?'1bar)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest60()
{
Test("""
@"(?("
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence />
<CloseParenToken />
</SimpleGrouping>
<Sequence />
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[13..13)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="(?(" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest61()
{
Test("""
@"\p{klsak"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>{klsak</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[10..12)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..18)" Text="\p{klsak" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest62()
{
Test("""
@"(?c:cat)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>c:cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[11..12)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..18)" Text="(?c:cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest63()
{
Test("""
@"(??e:cat)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrOneQuantifier>
<Text>
<TextToken>?</TextToken>
</Text>
<QuestionToken>?</QuestionToken>
</ZeroOrOneQuantifier>
<Text>
<TextToken>e:cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[11..12)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..19)" Text="(??e:cat)" />
<Capture Name="1" Span="[10..19)" Text="(??e:cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest64()
{
Test("""
@"[a-f-[]]+"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>a</TextToken>
</Text>
<MinusToken>-</MinusToken>
<Text>
<TextToken>f</TextToken>
</Text>
</CharacterClassRange>
<CharacterClassSubtraction>
<MinusToken>-</MinusToken>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>]</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
</CharacterClassSubtraction>
<Text>
<TextToken>+</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.A_subtraction_must_be_the_last_element_in_a_character_class}" Span="[14..14)" Text="" />
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[19..19)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..19)" Text="[a-f-[]]+" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest65()
{
Test("""
@"[A-[]+"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>A</TextToken>
</Text>
<CharacterClassSubtraction>
<MinusToken>-</MinusToken>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>]+</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</CharacterClassSubtraction>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[16..16)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="[A-[]+" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest66()
{
Test("""
@"(?(?e))"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>e</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[12..13)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?e))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest67()
{
Test("""
@"(?(?a)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>a</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken />
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[12..13)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[13..14)" Text="?" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[16..16)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="(?(?a)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest68()
{
Test("""
@"(?r:cat)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>r:cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[10..11)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[11..12)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..18)" Text="(?r:cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest69()
{
Test("""
@"(?(?N))"
""", """
<Tree>
<CompilationUnit>
<Sequence>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>N</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="Unrecognized grouping construct" Span="[12..13)" Text="(" />
<Diagnostic Message="Quantifier '?' following nothing" Span="[13..14)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(?(?N))" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest70()
{
Test("""
@"[]"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>]</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[12..12)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="[]" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest71()
{
Test("""
@"\x2"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<HexEscape>
<BackslashToken>\</BackslashToken>
<TextToken>x</TextToken>
<TextToken>2</TextToken>
</HexEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Insufficient_or_invalid_hexadecimal_digits}" Span="[10..13)" Text="\x2" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\x2" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest72()
{
Test("""
@"(cat) (?#cat) \s+ (?#followed by 1 or more whitespace"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>
<Trivia>
<WhitespaceTrivia> </WhitespaceTrivia>
<CommentTrivia>(?#cat)</CommentTrivia>
<WhitespaceTrivia> </WhitespaceTrivia>
</Trivia>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
</Sequence>
<EndOfFile>
<Trivia>
<WhitespaceTrivia> </WhitespaceTrivia>
<CommentTrivia>(?#followed by 1 or more whitespace</CommentTrivia>
</Trivia>
</EndOfFile>
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_regex_comment}" Span="[31..66)" Text="(?#followed by 1 or more whitespace" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..66)" Text="(cat) (?#cat) \s+ (?#followed by 1 or more whitespace" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
</Captures>
</Tree>
""", RegexOptions.IgnorePatternWhitespace);
}
[Fact]
public void NegativeTest73()
{
Test("""
@"cat(?(?afdcat)dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>afdcat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[15..16)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[16..17)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..28)" Text="cat(?(?afdcat)dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest74()
{
Test("""
@"cat(?(?<cat>cat)dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Alternation_conditions_do_not_capture_and_cannot_be_named}" Span="[13..14)" Text="(" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..30)" Text="cat(?(?<cat>cat)dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest75()
{
Test("""
@"cat(?(?'cat'cat)dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SingleQuoteToken>'</SingleQuoteToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<SingleQuoteToken>'</SingleQuoteToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Alternation_conditions_do_not_capture_and_cannot_be_named}" Span="[13..14)" Text="(" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..30)" Text="cat(?(?'cat'cat)dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest76()
{
Test("""
@"cat(?(?#COMMENT)cat)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<ConditionalExpressionGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>?</TextToken>
</Text>
<Text>
<TextToken>#COMMENT</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</ConditionalExpressionGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Alternation_conditions_cannot_be_comments}" Span="[13..14)" Text="(" />
<Diagnostic Message="{FeaturesResources.Unrecognized_grouping_construct}" Span="[15..16)" Text="(" />
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '?')}" Span="[16..17)" Text="?" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..30)" Text="cat(?(?#COMMENT)cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest77()
{
Test("""
@"(?<cat>cat)\w+(?<dog-()*!@>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<BalancingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<MinusToken>-</MinusToken>
<CaptureNameToken />
<GreaterThanToken />
<Sequence>
<ZeroOrMoreQuantifier>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence />
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>!@>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</BalancingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[31..32)" Text="(" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..41)" Text="(?<cat>cat)\w+(?<dog-()*!@>dog)" />
<Capture Name="1" Span="[31..33)" Text="()" />
<Capture Name="2" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="3" Span="[24..41)" Text="(?<dog-()*!@>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..41)" Text="(?<dog-()*!@>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest78()
{
Test("""
@"(?<cat>cat)\w+(?<dog-catdog>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<BalancingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<MinusToken>-</MinusToken>
<CaptureNameToken value="catdog">catdog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</BalancingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_name_0, "catdog")}" Span="[31..37)" Text="catdog" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..42)" Text="(?<cat>cat)\w+(?<dog-catdog>dog)" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..42)" Text="(?<dog-catdog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..42)" Text="(?<dog-catdog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest79()
{
Test("""
@"(?<cat>cat)\w+(?<dog-1uosn>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<BalancingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<MinusToken>-</MinusToken>
<NumberToken value="1">1</NumberToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken>uosn>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</BalancingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[32..33)" Text="u" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..41)" Text="(?<cat>cat)\w+(?<dog-1uosn>dog)" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..41)" Text="(?<dog-1uosn>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..41)" Text="(?<dog-1uosn>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest80()
{
Test("""
@"(?<cat>cat)\w+(?<dog-16>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<BalancingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<MinusToken>-</MinusToken>
<NumberToken value="16">16</NumberToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</BalancingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_number_0, "16")}" Span="[31..33)" Text="16" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..38)" Text="(?<cat>cat)\w+(?<dog-16>dog)" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..38)" Text="(?<dog-16>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..38)" Text="(?<dog-16>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest81()
{
Test("""
@"cat(?<->dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<BalancingGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken />
<MinusToken>-</MinusToken>
<CaptureNameToken />
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</BalancingGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[17..18)" Text=">" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="cat(?<->dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest82()
{
Test("""
@"cat(?<>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken />
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[16..17)" Text=">" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="cat(?<>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest83()
{
Test("""
@"cat(?<dog<>)_*>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken><></TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<ZeroOrMoreQuantifier>
<Text>
<TextToken>_</TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>>dog</TextToken>
</Text>
<Text>
<TextToken>)</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[19..20)" Text="<" />
<Diagnostic Message="{FeaturesResources.Too_many_close_parens}" Span="[28..29)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..29)" Text="cat(?<dog<>)_*>dog)" />
<Capture Name="1" Span="[13..22)" Text="(?<dog<>)" />
<Capture Name="dog" Span="[13..22)" Text="(?<dog<>)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest84()
{
Test("""
@"cat(?<dog >)_*>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken> ></TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<ZeroOrMoreQuantifier>
<Text>
<TextToken>_</TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>>dog</TextToken>
</Text>
<Text>
<TextToken>)</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[19..20)" Text=" " />
<Diagnostic Message="{FeaturesResources.Too_many_close_parens}" Span="[28..29)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..29)" Text="cat(?<dog >)_*>dog)" />
<Capture Name="1" Span="[13..22)" Text="(?<dog >)" />
<Capture Name="dog" Span="[13..22)" Text="(?<dog >)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest85()
{
Test("""
@"cat(?<dog!>)_*>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken>!></TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<ZeroOrMoreQuantifier>
<Text>
<TextToken>_</TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>>dog</TextToken>
</Text>
<Text>
<TextToken>)</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[19..20)" Text="!" />
<Diagnostic Message="{FeaturesResources.Too_many_close_parens}" Span="[28..29)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..29)" Text="cat(?<dog!>)_*>dog)" />
<Capture Name="1" Span="[13..22)" Text="(?<dog!>)" />
<Capture Name="dog" Span="[13..22)" Text="(?<dog!>)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest86()
{
Test("""
@"cat(?<dog)_*>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken />
<Sequence />
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<ZeroOrMoreQuantifier>
<Text>
<TextToken>_</TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>>dog</TextToken>
</Text>
<Text>
<TextToken>)</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[19..20)" Text=")" />
<Diagnostic Message="{FeaturesResources.Too_many_close_parens}" Span="[26..27)" Text=")" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..27)" Text="cat(?<dog)_*>dog)" />
<Capture Name="1" Span="[13..20)" Text="(?<dog)" />
<Capture Name="dog" Span="[13..20)" Text="(?<dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest87()
{
Test("""
@"cat(?<1dog>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="1">1</NumberToken>
<GreaterThanToken />
<Sequence>
<Text>
<TextToken>dog>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Invalid_group_name_Group_names_must_begin_with_a_word_character}" Span="[17..18)" Text="d" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="cat(?<1dog>dog)" />
<Capture Name="1" Span="[13..25)" Text="(?<1dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest88()
{
Test("""
@"cat(?<0>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="0">0</NumberToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Capture_number_cannot_be_zero}" Span="[16..17)" Text="0" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="cat(?<0>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest89()
{
Test("""
@"([5-\D]*)dog"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>5</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>D</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "D")}" Span="[14..16)" Text="\D" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="([5-\D]*)dog" />
<Capture Name="1" Span="[10..19)" Text="([5-\D]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest90()
{
Test("""
@"cat([6-\s]*)dog"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>6</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "s")}" Span="[17..19)" Text="\s" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="cat([6-\s]*)dog" />
<Capture Name="1" Span="[13..22)" Text="([6-\s]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest91()
{
Test("""
@"cat([c-\S]*)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>c</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>S</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "S")}" Span="[17..19)" Text="\S" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="cat([c-\S]*)" />
<Capture Name="1" Span="[13..22)" Text="([c-\S]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest92()
{
Test("""
@"cat([7-\w]*)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>7</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "w")}" Span="[17..19)" Text="\w" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="cat([7-\w]*)" />
<Capture Name="1" Span="[13..22)" Text="([7-\w]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest93()
{
Test("""
@"cat([a-\W]*)dog"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>a</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>W</TextToken>
</CharacterClassEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "W")}" Span="[17..19)" Text="\W" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="cat([a-\W]*)dog" />
<Capture Name="1" Span="[13..22)" Text="([a-\W]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest94()
{
Test("""
@"([f-\p{Lu}]\w*)\s([\p{Lu}]\w*)"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>f</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Lu</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<ZeroOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Lu</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<ZeroOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>w</TextToken>
</CharacterClassEscape>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "p")}}" Span="[14..16)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..40)" Text="([f-\p{Lu}]\w*)\s([\p{Lu}]\w*)" />
<Capture Name="1" Span="[10..25)" Text="([f-\p{Lu}]\w*)" />
<Capture Name="2" Span="[27..40)" Text="([\p{Lu}]\w*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest95()
{
Test("""
@"(cat) (?#cat) \s+ (?#followed by 1 or more whitespace"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<Text>
<TextToken> </TextToken>
</Text>
<Text>
<TextToken>
<Trivia>
<CommentTrivia>(?#cat)</CommentTrivia>
</Trivia> </TextToken>
</Text>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<Text>
<TextToken> </TextToken>
</Text>
</Sequence>
<EndOfFile>
<Trivia>
<CommentTrivia>(?#followed by 1 or more whitespace</CommentTrivia>
</Trivia>
</EndOfFile>
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_regex_comment}" Span="[31..66)" Text="(?#followed by 1 or more whitespace" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..66)" Text="(cat) (?#cat) \s+ (?#followed by 1 or more whitespace" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest96()
{
Test("""
@"([1-\P{Ll}][\p{Ll}]*)\s([\P{Ll}][\p{Ll}]*)"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CharacterClassRange>
<Text>
<TextToken>1</TextToken>
</Text>
<MinusToken>-</MinusToken>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Ll</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</CharacterClassRange>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Ll</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Ll</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<CategoryEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
<OpenBraceToken>{</OpenBraceToken>
<EscapeCategoryToken>Ll</EscapeCategoryToken>
<CloseBraceToken>}</CloseBraceToken>
</CategoryEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Cannot_include_class_0_in_character_range, "P")}}" Span="[14..16)" Text="\P" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..52)" Text="([1-\P{Ll}][\p{Ll}]*)\s([\P{Ll}][\p{Ll}]*)" />
<Capture Name="1" Span="[10..31)" Text="([1-\P{Ll}][\p{Ll}]*)" />
<Capture Name="2" Span="[33..52)" Text="([\P{Ll}][\p{Ll}]*)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest97()
{
Test("""
@"[\P]"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
</SimpleEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Incomplete_character_escape}" Span="[11..13)" Text="\P" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="[\P]" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest98()
{
Test("""
@"([\pcat])"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_character_escape}" Span="[12..14)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..19)" Text="([\pcat])" />
<Capture Name="1" Span="[10..19)" Text="([\pcat])" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest99()
{
Test("""
@"([\Pcat])"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>P</TextToken>
</SimpleEscape>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_character_escape}" Span="[12..14)" Text="\P" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..19)" Text="([\Pcat])" />
<Capture Name="1" Span="[10..19)" Text="([\Pcat])" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest100()
{
Test("""
@"(\p{"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>{</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[11..13)" Text="\p" />
<Diagnostic Message="{{FeaturesResources.Not_enough_close_parens}}" Span="[14..14)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="(\p{" />
<Capture Name="1" Span="[10..14)" Text="(\p{" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest101()
{
Test("""
@"(\p{Ll"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
<Text>
<TextToken>{Ll</TextToken>
</Text>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{FeaturesResources.Incomplete_character_escape}}" Span="[11..13)" Text="\p" />
<Diagnostic Message="{{FeaturesResources.Not_enough_close_parens}}" Span="[16..16)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..16)" Text="(\p{Ll" />
<Capture Name="1" Span="[10..16)" Text="(\p{Ll" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest102()
{
Test("""
@"(cat)([\o]*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>o</TextToken>
</SimpleEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Unrecognized_escape_sequence_0, "o")}" Span="[18..19)" Text="o" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..27)" Text="(cat)([\o]*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..22)" Text="([\o]*)" />
<Capture Name="3" Span="[22..27)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest103()
{
Test("""
@"[\p]"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>p</TextToken>
</SimpleEscape>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Incomplete_character_escape}" Span="[11..13)" Text="\p" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..14)" Text="[\p]" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest104()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\kcat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_named_back_reference.Replace("<", "<").Replace(">", ">")}" Span="[35..37)" Text="\k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..40)" Text="(?<cat>cat)\s+(?<dog>dog)\kcat" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest105()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\k<cat2>"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<KCaptureEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat2">cat2</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
</KCaptureEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_name_0, "cat2")}" Span="[38..42)" Text="cat2" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..43)" Text="(?<cat>cat)\s+(?<dog>dog)\k<cat2>" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest106()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\k<8>cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<KCaptureEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
<LessThanToken><</LessThanToken>
<NumberToken value="8">8</NumberToken>
<GreaterThanToken>></GreaterThanToken>
</KCaptureEscape>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_number_0, "8")}" Span="[38..39)" Text="8" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..43)" Text="(?<cat>cat)\s+(?<dog>dog)\k<8>cat" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest107()
{
Test("""
@"^[abcd]{1}?*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<ExactNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="1">1</NumberToken>
<CloseBraceToken>}</CloseBraceToken>
</ExactNumericQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[21..22)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..23)" Text="^[abcd]{1}?*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest108()
{
Test("""
@"^[abcd]*+$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>+</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "+")}" Span="[18..19)" Text="+" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..20)" Text="^[abcd]*+$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest109()
{
Test("""
@"^[abcd]+*$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<OneOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "*")}" Span="[18..19)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..20)" Text="^[abcd]+*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest110()
{
Test("""
@"^[abcd]?*$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ZeroOrOneQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<QuestionToken>?</QuestionToken>
</ZeroOrOneQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "*")}" Span="[18..19)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..20)" Text="^[abcd]?*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest111()
{
Test("""
@"^[abcd]*?+$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>+</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "+")}" Span="[19..20)" Text="+" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="^[abcd]*?+$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest112()
{
Test("""
@"^[abcd]+?*$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<OneOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "*")}" Span="[19..20)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="^[abcd]+?*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest113()
{
Test("""
@"^[abcd]{1,}?*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<OpenRangeNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="1">1</NumberToken>
<CommaToken>,</CommaToken>
<CloseBraceToken>}</CloseBraceToken>
</OpenRangeNumericQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[22..23)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..24)" Text="^[abcd]{1,}?*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest114()
{
Test("""
@"^[abcd]??*$"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<ZeroOrOneQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<QuestionToken>?</QuestionToken>
</ZeroOrOneQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "*")}" Span="[19..20)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..21)" Text="^[abcd]??*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest115()
{
Test("""
@"^[abcd]+{0,5}$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<OneOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<Text>
<TextToken>{</TextToken>
</Text>
<Text>
<TextToken>0,5}</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "{")}}" Span="[18..19)" Text="{" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..24)" Text="^[abcd]+{0,5}$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest116()
{
Test("""
@"^[abcd]?{0,5}$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ZeroOrOneQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<QuestionToken>?</QuestionToken>
</ZeroOrOneQuantifier>
<Text>
<TextToken>{</TextToken>
</Text>
<Text>
<TextToken>0,5}</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "{")}}" Span="[18..19)" Text="{" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..24)" Text="^[abcd]?{0,5}$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest117()
{
Test("""
@"\u"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<UnicodeEscape>
<BackslashToken>\</BackslashToken>
<TextToken>u</TextToken>
<TextToken />
</UnicodeEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Insufficient_or_invalid_hexadecimal_digits}" Span="[10..12)" Text="\u" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="\u" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest118()
{
Test("""
@"\ua"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<UnicodeEscape>
<BackslashToken>\</BackslashToken>
<TextToken>u</TextToken>
<TextToken>a</TextToken>
</UnicodeEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Insufficient_or_invalid_hexadecimal_digits}" Span="[10..13)" Text="\ua" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\ua" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest119()
{
Test("""
@"\u0"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<UnicodeEscape>
<BackslashToken>\</BackslashToken>
<TextToken>u</TextToken>
<TextToken>0</TextToken>
</UnicodeEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Insufficient_or_invalid_hexadecimal_digits}" Span="[10..13)" Text="\u0" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..13)" Text="\u0" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest120()
{
Test("""
@"\x"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<HexEscape>
<BackslashToken>\</BackslashToken>
<TextToken>x</TextToken>
<TextToken />
</HexEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Insufficient_or_invalid_hexadecimal_digits}" Span="[10..12)" Text="\x" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..12)" Text="\x" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest121()
{
Test("""
@"^[abcd]*{0,5}$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ZeroOrMoreQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
<Text>
<TextToken>{</TextToken>
</Text>
<Text>
<TextToken>0,5}</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "{")}}" Span="[18..19)" Text="{" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..24)" Text="^[abcd]*{0,5}$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest122()
{
Test("""
@"["
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence />
<CloseBracketToken />
</CharacterClass>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[11..11)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..11)" Text="[" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest123()
{
Test("""
@"^[abcd]{0,16}?*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<LazyQuantifier>
<ClosedRangeNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="0">0</NumberToken>
<CommaToken>,</CommaToken>
<NumberToken value="16">16</NumberToken>
<CloseBraceToken>}</CloseBraceToken>
</ClosedRangeNumericQuantifier>
<QuestionToken>?</QuestionToken>
</LazyQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[24..25)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..26)" Text="^[abcd]{0,16}?*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest124()
{
Test("""
@"^[abcd]{1,}*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<OpenRangeNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="1">1</NumberToken>
<CommaToken>,</CommaToken>
<CloseBraceToken>}</CloseBraceToken>
</OpenRangeNumericQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[21..22)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..23)" Text="^[abcd]{1,}*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest125()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\k<8>cat"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<KCaptureEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
<LessThanToken><</LessThanToken>
<NumberToken value="8">8</NumberToken>
<GreaterThanToken>></GreaterThanToken>
</KCaptureEscape>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_number_0, "8")}" Span="[38..39)" Text="8" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..43)" Text="(?<cat>cat)\s+(?<dog>dog)\k<8>cat" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.ECMAScript);
}
[Fact]
public void NegativeTest126()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\k8"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken>8</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_named_back_reference.Replace("<", "<").Replace(">", ">")}" Span="[35..37)" Text="\k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..38)" Text="(?<cat>cat)\s+(?<dog>dog)\k8" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest127()
{
Test("""
@"(?<cat>cat)\s+(?<dog>dog)\k8"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="cat">cat</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<CaptureNameToken value="dog">dog</CaptureNameToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
<SimpleEscape>
<BackslashToken>\</BackslashToken>
<TextToken>k</TextToken>
</SimpleEscape>
<Text>
<TextToken>8</TextToken>
</Text>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Malformed_named_back_reference.Replace("<", "<").Replace(">", ">")}" Span="[35..37)" Text="\k" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..38)" Text="(?<cat>cat)\s+(?<dog>dog)\k8" />
<Capture Name="1" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="2" Span="[24..35)" Text="(?<dog>dog)" />
<Capture Name="cat" Span="[10..21)" Text="(?<cat>cat)" />
<Capture Name="dog" Span="[24..35)" Text="(?<dog>dog)" />
</Captures>
</Tree>
""", RegexOptions.ECMAScript);
}
[Fact]
public void NegativeTest128()
{
Test("""
@"(cat)(\7)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<BackreferenceEscape>
<BackslashToken>\</BackslashToken>
<NumberToken value="7">7</NumberToken>
</BackreferenceEscape>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Reference_to_undefined_group_number_0, "7")}" Span="[17..18)" Text="7" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..19)" Text="(cat)(\7)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..19)" Text="(\7)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest129()
{
Test("""
@"(cat)\s+(?<2147483648>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="-2147483648">2147483648</NumberToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Quantifier_and_capture_group_numbers_must_be_less_than_or_equal_to_Int32_MaxValue}" Span="[21..31)" Text="2147483648" />
</Diagnostics>
<Captures>
<Capture Name="-2147483648" Span="[18..36)" Text="(?<2147483648>dog)" />
<Capture Name="0" Span="[10..36)" Text="(cat)\s+(?<2147483648>dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest130()
{
Test("""
@"(cat)\s+(?<21474836481097>dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<OneOrMoreQuantifier>
<CharacterClassEscape>
<BackslashToken>\</BackslashToken>
<TextToken>s</TextToken>
</CharacterClassEscape>
<PlusToken>+</PlusToken>
</OneOrMoreQuantifier>
<CaptureGrouping>
<OpenParenToken>(</OpenParenToken>
<QuestionToken>?</QuestionToken>
<LessThanToken><</LessThanToken>
<NumberToken value="1097">21474836481097</NumberToken>
<GreaterThanToken>></GreaterThanToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</CaptureGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Quantifier_and_capture_group_numbers_must_be_less_than_or_equal_to_Int32_MaxValue}" Span="[21..35)" Text="21474836481097" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..40)" Text="(cat)\s+(?<21474836481097>dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="1097" Span="[18..40)" Text="(?<21474836481097>dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest131()
{
Test("""
@"^[abcd]{1}*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ExactNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="1">1</NumberToken>
<CloseBraceToken>}</CloseBraceToken>
</ExactNumericQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[20..21)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..22)" Text="^[abcd]{1}*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest132()
{
Test("""
@"(cat)(\c*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrMoreQuantifier>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken />
</ControlEscape>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_control_character}" Span="[18..19)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="(cat)(\c*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..20)" Text="(\c*)" />
<Capture Name="3" Span="[20..25)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest133()
{
Test("""
@"(cat)(\c *)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken />
</ControlEscape>
<ZeroOrMoreQuantifier>
<Text>
<TextToken> </TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_control_character}" Span="[18..19)" Text=" " />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..26)" Text="(cat)(\c *)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..21)" Text="(\c *)" />
<Capture Name="3" Span="[21..26)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest134()
{
Test("""
@"(cat)(\c?*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ZeroOrOneQuantifier>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken />
</ControlEscape>
<QuestionToken>?</QuestionToken>
</ZeroOrOneQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_control_character}" Span="[18..19)" Text="?" />
<Diagnostic Message="{string.Format(FeaturesResources.Nested_quantifier_0, "*")}" Span="[19..20)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..26)" Text="(cat)(\c?*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..21)" Text="(\c?*)" />
<Capture Name="3" Span="[21..26)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest135()
{
Test("""
@"(cat)(\c`*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken />
</ControlEscape>
<ZeroOrMoreQuantifier>
<Text>
<TextToken>`</TextToken>
</Text>
<AsteriskToken>*</AsteriskToken>
</ZeroOrMoreQuantifier>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unrecognized_control_character}" Span="[18..19)" Text="`" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..26)" Text="(cat)(\c`*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..21)" Text="(\c`*)" />
<Capture Name="3" Span="[21..26)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest136()
{
Test("""
@"(cat)(\c\|*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Alternation>
<Sequence>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken>\</TextToken>
</ControlEscape>
</Sequence>
<BarToken>|</BarToken>
<Sequence>
<Text>
<TextToken>*</TextToken>
</Text>
</Sequence>
</Alternation>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>dog</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{string.Format(FeaturesResources.Quantifier_0_following_nothing, '*')}" Span="[20..21)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..27)" Text="(cat)(\c\|*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..22)" Text="(\c\|*)" />
<Capture Name="3" Span="[22..27)" Text="(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest137()
{
Test("""
@"(cat)(\c\[*)(dog)"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken>\</TextToken>
</ControlEscape>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>*)(dog)</TextToken>
</Text>
</Sequence>
<CloseBracketToken />
</CharacterClass>
</Sequence>
<CloseParenToken />
</SimpleGrouping>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Unterminated_character_class_set}" Span="[27..27)" Text="" />
<Diagnostic Message="{FeaturesResources.Not_enough_close_parens}" Span="[27..27)" Text="" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..27)" Text="(cat)(\c\[*)(dog)" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
<Capture Name="2" Span="[15..27)" Text="(\c\[*)(dog)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest138()
{
Test("""
@"^[abcd]{0,16}*$"
""", $$"""
<Tree>
<CompilationUnit>
<Sequence>
<StartAnchor>
<CaretToken>^</CaretToken>
</StartAnchor>
<ClosedRangeNumericQuantifier>
<CharacterClass>
<OpenBracketToken>[</OpenBracketToken>
<Sequence>
<Text>
<TextToken>abcd</TextToken>
</Text>
</Sequence>
<CloseBracketToken>]</CloseBracketToken>
</CharacterClass>
<OpenBraceToken>{</OpenBraceToken>
<NumberToken value="0">0</NumberToken>
<CommaToken>,</CommaToken>
<NumberToken value="16">16</NumberToken>
<CloseBraceToken>}</CloseBraceToken>
</ClosedRangeNumericQuantifier>
<Text>
<TextToken>*</TextToken>
</Text>
<EndAnchor>
<DollarToken>$</DollarToken>
</EndAnchor>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{{string.Format(FeaturesResources.Nested_quantifier_0, "*")}}" Span="[23..24)" Text="*" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..25)" Text="^[abcd]{0,16}*$" />
</Captures>
</Tree>
""", RegexOptions.None);
}
[Fact]
public void NegativeTest139()
{
Test("""
@"(cat)\c"
""", $"""
<Tree>
<CompilationUnit>
<Sequence>
<SimpleGrouping>
<OpenParenToken>(</OpenParenToken>
<Sequence>
<Text>
<TextToken>cat</TextToken>
</Text>
</Sequence>
<CloseParenToken>)</CloseParenToken>
</SimpleGrouping>
<ControlEscape>
<BackslashToken>\</BackslashToken>
<TextToken>c</TextToken>
<TextToken />
</ControlEscape>
</Sequence>
<EndOfFile />
</CompilationUnit>
<Diagnostics>
<Diagnostic Message="{FeaturesResources.Missing_control_character}" Span="[16..17)" Text="c" />
</Diagnostics>
<Captures>
<Capture Name="0" Span="[10..17)" Text="(cat)\c" />
<Capture Name="1" Span="[10..15)" Text="(cat)" />
</Captures>
</Tree>
""", RegexOptions.None);
}
}
|