public ParserResults Parse()
{
var results = new ParserResults();
var scanner = new StringScanner(_source);
var matched = true;
while (matched && scanner.RemainingLength > 0)
{
var start = scanner.Position;
scanner.Skip(@"^\s+");
var keyPart = scanner.Scan(@"^((?<key>-\w)[\s]?|(?<key>--.*?)(\s|$))");
var keyOffset = scanner.Position;
var valuePart = scanner.Scan(@"^(?!-)(\""(?<value>.*?)\""|(?<value>.*?)(\s|$))");
matched = keyPart != null || valuePart != null;
var arg = _processor.ArgumentConfiguration(keyPart == null ? _processor.DefaultArgument : keyPart.Groups["key"].Value);
if(arg != null && arg.Flag && valuePart != null)
{
if(keyPart != null) scanner.Position -= valuePart.Length;
valuePart = null;
}
if(arg == null)
{
if(keyOffset > -1)
{
results.UnresolvedParts.Add(_source.Substring(start, keyOffset - start).Trim());
results.UnresolvedParts.Add(_source.Substring(keyOffset, scanner.Position - keyOffset).Trim());
}
else results.UnresolvedParts.Add(_source.Substring(start, scanner.Position - start).Trim());
continue;
}
if (arg.Flag) valuePart = null;
if (!arg.TakesManyValues && results.ValuePairs.Any(v => v.Key == arg))
{
results.UnresolvedParts.Add(_source.Substring(start, scanner.Position - start));
}
else
{
results.ValuePairs.Add(new KeyValuePair<Argument, string>(arg, valuePart == null ? "True" : valuePart.Groups["value"].Value));
}
}
if (scanner.RemainingLength > 0)
{
throw new ParseException(string.Format("Invalid arguments value: {0}", _source));
}
return results;
}
public void IncrementsOnMatch()
{
var scanner = new StringScanner("foobar");
scanner.Scan("^foo");
Assert.That(scanner.Remaining, Is.EqualTo("bar"));
}
public void DoesntIncrementWithoutMatch()
{
var scanner = new StringScanner("foobar");
scanner.Scan("^bar");
Assert.That(scanner.Remaining, Is.EqualTo("foobar"));
}
public void CanSkipValues()
{
var scanner = new StringScanner("foobar");
if (!scanner.Skip("^foo")) Assert.Fail("Skip failed!");
Assert.That(scanner.Remaining, Is.EqualTo("bar"));
}
public void CanGetRemainingMatch()
{
var scanner = new StringScanner("foobar");
Assert.That(scanner.Remaining, Is.EqualTo("foobar"));
}
public void CanFailAtSkippingValues()
{
var scanner = new StringScanner("foobar");
if (scanner.Skip("^bar")) Assert.Fail("Skip failed!");
}
