public void TestCustomParsers()
{
var lht = new LiteralHandlerTable();
Assert.IsTrue(lht.AddParser(false, (Symbol)"fail", (text, marker) =>
{
Assert.AreEqual(marker.Name, "fail");
return(new LogMessage(Severity.Error, null, "Always fails"));
}));
Func <UString, Symbol, Either <object, LogMessage> > trimmer = (text, marker) =>
{
Assert.AreEqual(marker.Name, "trimmed");
return(text.ToString().Trim());
};
Assert.IsTrue(lht.AddParser(false, (Symbol)"trimmed", trimmer));
Assert.IsFalse(lht.AddParser(false, (Symbol)"trimmed", trimmer));
Assert.IsTrue(lht.AddParser(true, (Symbol)"trimmed", trimmer));
Assert.AreEqual("Hi", lht.TryParse(" Hi ", (Symbol)"trimmed").Left.Value);
Assert.AreEqual("Always fails", lht.TryParse(" Hi ", (Symbol)"fail").Right.Value.Format);
Assert.IsTrue(lht.TryParse("...", (Symbol)"undefined").Right.HasValue);
Assert.IsTrue(lht.TryParse("...", (Symbol)"undefined").Right.Value.Format.Contains("No parser is registered"));
}
