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Support \v and \f escape sequences #186

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Support \v and \f escape sequences #186

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2 changes: 2 additions & 0 deletions Sources/SynKit/Libraries/Lexer.Generator/RegExParser.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,8 @@ public static string Escape(string str) =>
'n' => '\n',
'r' => '\r',
't' => '\t',
'v' => '\v',
'f' => '\f',
'0' => '\0',
'\\' => '\\',
_ => null,
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14 changes: 14 additions & 0 deletions Sources/SynKit/Tests/Lexer.Tests/RegexesTests.cs
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Expand Up @@ -142,6 +142,18 @@ internal partial class Issue145Lexer
{
}

public enum SpecialEscapeSequences
{
[End] End,
[Error] Error,
[Regex("[\\f\\v]")] Feed,
}

[Lexer(typeof(SpecialEscapeSequences))]
internal partial class SpecialEscapeSequencesLexer
{
}

[Theory]

[InlineData("foo", typeof(Identifier), true, typeof(IdentifierLexer))]
Expand Down Expand Up @@ -229,6 +241,8 @@ internal partial class Issue145Lexer
[InlineData(@"'hello \' bye'", typeof(Issue140Token), true, typeof(Issue140Lexer))]

[InlineData(@"]", typeof(EscapingInsideSingleLiteralRangeToken), true, typeof(Issue145Lexer))]
[InlineData("\v", typeof(SpecialEscapeSequences), true, typeof(SpecialEscapeSequencesLexer))]
[InlineData("\f", typeof(SpecialEscapeSequences), true, typeof(SpecialEscapeSequencesLexer))]
public void SingleTokenAcceptance(string input, Type enumType, bool shouldAccept, Type lexerType)
{
dynamic lexer = Activator.CreateInstance(lexerType, input)!;
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