private void Matches(RegexGrammar g, string regex, string s)
{
var converter = new RegexConverter();
var c = converter.Convert(g.ParseExpression(regex));
var runner = PatternCompiler.Default.Compile(new Pattern()
{
Data = c
});
var result = runner.Run(s);
Assert.IsTrue(result.IsSuccessful && result.InputPosition >= s.Length, $"PEG from regex {regex} must match {s}. Matched {result.InputPosition} characters. Success: {result.IsSuccessful}");
}
private static int GetNumCaptures(string regex, string strData)
{
var data = strData.ToCharArray();
var g = new RegexGrammar(PatternCompiler.Default);
var converter = new RegexConverter();
var c = converter.Convert(g.ParseExpression(regex));
var matchPattern = new ZeroOrMore(new PrioritizedChoice(new CaptureGroup(0, c), new Any()));
var p = new Pattern(null)
{
Data = matchPattern
};
var runner = PatternCompiler.Default.Compile(p);
var captures = new List <Capture>();
var result = runner.Run(data, 0, data.Length, captures);
return(result.IsSuccessful ? captures.Count : -1);
}
public void TestMethod1()
{
Assert.IsTrue(grammar.ParseExpression(@"Tom.{10,25}river|river.{10,25}Tom") != null);
Assert.IsTrue(grammar.ParseExpression("a") != null);
Assert.IsTrue(grammar.ParseExpression(@"\w+") != null);
Assert.IsTrue(grammar.ParseExpression(".*") != null);
Assert.IsTrue(grammar.ParseExpression("th[a-z]+") != null);
Assert.IsTrue(grammar.ParseExpression(@"\b(ME|YOU)\b") != null);
Assert.IsTrue(grammar.ParseExpression(@"a{3,5}") != null);
Matches(grammar, @"Tom.{10,25}river|river.{10,25}Tom", "river; and when Tom");
Matches(grammar, @"river.{10,25}Tom", "river, either. Tom");
Matches(grammar, "[a-z]{3,5}", "abcdz");
Matches(grammar, "[a-z]{3,5}", "abcd");
Matches(grammar, "[a-z]{3,5}", "abc");
Matches(grammar, "[a-z]shing", "ashing");
Matches(grammar, "this\\s[a-z]+", "this that");
Matches(grammar, "Huck[a-zA-Z]+|Saw[a-zA-Z]+", "Sawyer");
//Matches(grammar, "\\b\\w+nn\\b", "Lynn");
Matches(grammar, "Tom|Sawyer|Huckleberry|Finn", "Huckleberry");
Matches(grammar, ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", "abHuckleberry");
Matches(grammar, ".{2,4}(Tom|Sawyer|Huckleberry|Finn)", "abHuckleberry");
}