public void Should_lex_when_pattern_is_empty()
{
NamedRegexLexer lexer = new NamedRegexLexer("");
NamedRegexToken token = lexer.Lex();
token.Kind.ShouldBe(NamedRegexTokenKind.EmptyPattern);
}
public void Should_lex_regex_patterns(string pattern, NamedRegexTokenKind[] kinds)
{
var lexer = new NamedRegexLexer(pattern);
var results = new List <NamedRegexTokenKind>();
while (true)
{
var token = lexer.Lex();
results.Add(token.Kind);
if (token.Kind == NamedRegexTokenKind.EndOfPattern)
{
break;
}
}
results.ShouldBe(kinds);
}
private static void Main()
{
const string pattern = "ab{c}d{ef}g}h";
var lexer = new NamedRegexLexer(pattern.AsMemory());
Trace.Listeners.Clear();
Trace.Listeners.Add(new ConsoleTraceListener());
while (true)
{
var token = lexer.Lex();
if (token.Kind == NamedRegexTokenKind.EndOfPattern)
{
break;
}
Console.WriteLine("--------------------------------------------------------------------------------------------------------");
Console.WriteLine($" {token}\n\t\t[{token.Range.Start}-{token.Range.End}]\t\t{token.Kind}");
Console.WriteLine("--------------------------------------------------------------------------------------------------------");
}
}
